WO2007120350A2 - Multi-ply strap drive trains for robotic arms - Google Patents

Multi-ply strap drive trains for robotic arms Download PDF

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Publication number
WO2007120350A2
WO2007120350A2 PCT/US2006/062377 US2006062377W WO2007120350A2 WO 2007120350 A2 WO2007120350 A2 WO 2007120350A2 US 2006062377 W US2006062377 W US 2006062377W WO 2007120350 A2 WO2007120350 A2 WO 2007120350A2
Authority
WO
WIPO (PCT)
Prior art keywords
strap
pulley
link
coupled
joint
Prior art date
Application number
PCT/US2006/062377
Other languages
French (fr)
Other versions
WO2007120350A3 (en
Inventor
Todd Solomon
Thomas Cooper
Original Assignee
Intuitive Surgical, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intuitive Surgical, Inc. filed Critical Intuitive Surgical, Inc.
Publication of WO2007120350A2 publication Critical patent/WO2007120350A2/en
Publication of WO2007120350A3 publication Critical patent/WO2007120350A3/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H7/00Gearings for conveying rotary motion by endless flexible members
    • F16H7/18Means for guiding or supporting belts, ropes, or chains
    • F16H7/20Mountings for rollers or pulleys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00Programme-controlled manipulators
    • B25J9/10Programme-controlled manipulators characterised by positioning means for manipulator elements
    • B25J9/104Programme-controlled manipulators characterised by positioning means for manipulator elements with cables, chains or ribbons
    • B25J9/1045Programme-controlled manipulators characterised by positioning means for manipulator elements with cables, chains or ribbons comprising tensioning means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/30Surgical robots
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/30Surgical robots
    • A61B34/37Master-slave robots
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/70Manipulators specially adapted for use in surgery
    • A61B34/71Manipulators operated by drive cable mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J18/00Arms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J18/00Arms
    • B25J18/005Arms having a curved shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J18/00Arms
    • B25J18/007Arms the end effector rotating around a fixed point
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/0084Material properties low friction
    • A61B2017/00845Material properties low friction of moving parts with respect to each other
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/30Surgical robots
    • A61B2034/305Details of wrist mechanisms at distal ends of robotic arms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/70Manipulators specially adapted for use in surgery
    • A61B34/71Manipulators operated by drive cable mechanisms
    • A61B2034/715Cable tensioning mechanisms for removing slack
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36Image-producing devices or illumination devices not otherwise provided for
    • A61B90/361Image-producing devices, e.g. surgical cameras
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S901/00Robots
    • Y10S901/19Drive system for arm
    • Y10S901/21Flaccid drive element
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49453Pulley making
    • Y10T29/49455Assembly
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/20Control lever and linkage systems
    • Y10T74/20207Multiple controlling elements for single controlled element
    • Y10T74/20305Robotic arm
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/20Control lever and linkage systems
    • Y10T74/20207Multiple controlling elements for single controlled element
    • Y10T74/20305Robotic arm
    • Y10T74/20323Robotic arm including flaccid drive element

Definitions

  • the embodiments of the invention relate generally to robotic surgical systems. More particularly, the embodiments of the invention relate to robotic surgical arms.
  • Typical robotic surgical arms include a number of joints and links to provide a range of motion to form a work envelope for an end effector coupled thereto. It is desirable to improve the range of motion of robotic surgical arms to increase the work envelope of the end effectors coupled thereto to perform a wider variety of robotic surgical procedures.
  • Typical robotic surgical arms further include a plurality of metal control cables routed therein which are moved to mechanically control the motion of the links about the joints and the motion in the end effector.
  • the use of the plurality of metal control cables is expensive and complicates the maintenance of the robotic surgical arms. It is desirable to reduce the manufacturing and maintenance costs of robotic surgical arms while at the same time improving its range of motion, robotic surgical procedures using one or more robotic surgical arms with a strap drive train.
  • Figure 2 a perspective view of the robotic patient-side system of Figure 1 with the one or more robotic surgical arms having the strap drive train.
  • Figure 3 is a perspective view of the robotic surgical master control console of Figure 1 that is used to control the one or more robotic surgical arms with the strap drive train.
  • Figures 4A-4B is a perspective view of an robotic surgical tool to couple to the one or more robotic surgical arms having the strap drive train.
  • Figures 5A-5B are perspective views of a patient side manipulator or robotic surgical arm and an endoscopic camera manipulator or robotic surgical arm.
  • Figures 6A-6B are schematic side views of a first multi-strap drive train having a two-strap system in a third link.
  • Figures 6C-6E are various perspective views of the linkages in the robotic surgical arm with panels removed to reveal the first multi-strap drive train.
  • Figures 7A-7B are schematic side views of a second multi-strap drive train having a three- strap system in a third link.
  • Figures 8A-8C are side views of the first multi-strap drive train to illustrate the range of pitch motion in the robotic surgical arm about the remote center.
  • Figures 9A-9D are views of an exemplary two-strap system with multi-layer and multi-ply straps that may be used in the third link.
  • Figures 10A-10B are views of an exemplary three-strap system with multi-ply straps that may be used in the third link.
  • Figure 1 IA illustrates an exemplary two-strap system that may be used in the second link including a hooking system and a first tensioning system to couple each end of the straps to the pulleys in the links of the robotic surgical arm.
  • Figures 1 IB-I ID illustrate magnified views of the hooking system that may be used to couple the straps to the pulleys in the links of the robotic surgical arm.
  • Figure 12A illustrates a schematic view of a drive train of a robotic surgical arm with a second tensioning system that may be used to tension the straps in the second and third links.
  • Figures 12B-12C illustrate magnified views of the second tensioning system that may be used in the links of the robotic surgical arm.
  • Figures 13 A-13D illustrate magnified views of the first tensioning system that may be used to couple and tension the straps to the pulleys in the links of the robotic surgical arm.
  • Figure 14 illustrate a magnified view of a third tensioning system that may be used to couple and tension the straps to the pulleys in the links of the robotic surgical arm.
  • Figure 15 illustrates a perspective view of a strap guide system in the third link of the robotic surgical arm to track the strap onto the idler pulley.
  • FIGs 16A-16B illustrate alternate embodiment of the a strap guide bearing that may be used in Figure 15.
  • Figures 17A-17E illustrate views of a camber adjustment system and its elements that may be used in the alternate to track straps onto idler pulleys
  • Figures 18A-18C illustrate schematic views of adjusting an offset robotic surgical arm to remote center.
  • the embodiments of the invention include methods, apparatus and systems for a robotic surgical system.
  • a robotic surgical system including one or more robotic surgical arms under the control of at least one multi-layer or multi-ply control strap.
  • Robotic surgery generally involves the use of a robot manipulator that has multiple robotic manipulator arms.
  • One or more of the robotic manipulator arms often support a surgical tool which may be articulated (such as jaws, scissors, graspers, needle holders, micro dissectors, staple appliers, tackers, suction/irrigation tools, clip appliers, or the like) or non-articulated (such as cutting blades, cautery probes, irrigators, catheters, suction orifices, or the like).
  • At least one of the robotic manipulator arms is used to support a stereo or three dimensional surgical image capture device 110 such as a stereo endoscope (which may be any of a variety of structures such as a stereo laparoscope, arthroscope, hysteroscope, or the like), or, optionally, some other stereo imaging modality (such as ultrasound, fluoroscopy, magnetic resonance imaging, or the like).
  • a stereo endoscope which may be any of a variety of structures such as a stereo laparoscope, arthroscope, hysteroscope, or the like
  • some other stereo imaging modality such as ultrasound, fluoroscopy, magnetic resonance imaging, or the like.
  • Robotic surgery may be used to perform a wide variety of surgical procedures, including but not limited to open surgery, neurosurgical procedures (such as stereotaxy), endoscopic procedures (such as laparoscopy, arthroscopy, thoracoscopy), and the like.
  • a user or operator O (generally a surgeon) performs a minimally invasive surgical procedure on patient P by manipulating control input devices 160 at a master control console 150.
  • the console 150 directs movement of robotically controlled endoscopic surgical instruments 101 A-IOlC by means of one or more control cables 159, effecting movement of the instruments using a robotic patient-side system 152 (also referred to as a patient-side cart).
  • the robotic patient- side system 152 has one or more robotic arms 158 with the strap drive.
  • the robotic patient-side system 152 includes at least three robotic manipulator arms 158A-158C supported by linkages 156,156', with a central robotic arm 158B supporting an endoscopic camera 101B and the robotic arms 158A,158C to left and right of center supporting tissue manipulation tools 101A 3 IOlC.
  • the robotic patient-side system 152 includes a positioning portion and a driven portion.
  • the positioning portion of the robotic patient-side system 152 remains in a fixed configuration during surgery while manipulating tissue.
  • the actively driven portion of the robotic patient-side system 152 is generally referred to herein as the robotic arms or alternatively to robotic surgical manipulators.
  • the positioning portion of the robotic patient-side system 152 that is in a fixed configuration during surgery maybe referred to as "set up arms” 156, 156' with positioning linkage and/or "set-up joints", hi an alternate embodiment of the invention, the robotic patient- side system 152 may be replaced by set up arms that couple at one end to left and right sides of the operating table T.
  • the three robotic manipulator arms 158A-158C may then be coupled to the opposite end of the set-up arms to ground to the table T.
  • manipulators such as robotic surgical arms 158A, 158C actuating the tissue affecting surgical tools 101A 5 IOlC are generally referred to herein as a PSM (patient- side manipulator), and a robotic surgical arm 158B controlling an image capture or data acquisition device, such as the endoscopic camera 101B, is generally referred to herein as a ECM (endoscopic- camera manipulator), it being noted that such telesurgical robotic manipulators may optionally actuate, maneuver and control a wide variety of instruments, tools and devices useful in surgery.
  • An assistant A may assist in pre-positioning of the robotic patient-side system 152 relative to patient P as well as swapping tools or instruments 101 for alternative tool structures, and the like, while viewing the internal surgical site via an assistant's display 154.
  • the robotic patient-side system 152 has one or more robotic surgical arms (a.k.a., robotic surgical
  • the robotic surgical arms 158A,158C are for coupling to robotic surgical tools 101A 3 IOlC.
  • the robotic surgical arm 158B is for coupling to an endoscopic camera 101B.
  • the robotic patient-side system 152 further includes a base 202 from which the robotic surgical instruments 101 may be supported. More specifically, the robotic surgical instruments 101 are each supported by the positioning linkage 156 and the robotic surgical arms 158.
  • the linkage structures may optionally be covered by protective covers or not to minimize the inertia that is manipulated by the servomechanism and the overall weight of robotic patient-side system 152.
  • the robotic patient-side system 152 generally has dimensions suitable for transporting between operating rooms. It typically can fit through standard operating room doors and onto standard hospital elevators.
  • the robotic patient-side system 152 may have a weight and a wheel (or other transportation) system that allows the cart to be positioned adjacent an operating table by a single attendant.
  • the robotic patient-side system 152 may be sufficiently stable during transport to avoid tipping, and to easily withstand overturning moments that may be imposed at the ends of the robotic arms during use.
  • the master control console 150 of the robotic surgical system 100 may include the computer 151 , a binocular or stereo viewer 312, an arm support 314, a pair of control inputs (control input wrists and control input arms) 160 in a workspace 316, foot pedals 318 (including foot pedals 318A-318B), and a viewing sensor 320.
  • the stereo viewer 312 has two displays where stereo three-dimensional images of the surgical site may be viewed to perform minimally invasive surgery.
  • the operator O typically sits in a chair, moves his or her head into alignment with the stereo viewer 312 to view the three-dimensional images of the surgical site.
  • the master control console 150 may include the viewing sensor 320 disposed adjacent the binocular display 312.
  • the system operator aligns his or her eyes with the binocular eye pieces of the display 312 to view a stereoscopic image of the surgical worksite, the operator's head sets off the viewing sensor 320 to enable the control of the robotic surgical tools 101.
  • the viewing sensor 320 can disable or stop generating new control signals in response to movements of the touch sensitive handles in order to hold the state of the robotic surgical tools.
  • the arm support 314 can be used to rest the elbows or forearms of the operator O (typically a surgeon) while gripping touch sensitive handles of the control input 160, one in each hand, in the workspace 316 to generate control signals.
  • the touch sensitive handles are positioned in the workspace 316 disposed beyond the arm support 314 and below the viewer 312. This allows the touch sensitive handles to be moved easily in the control space 316 in both position and orientation to generate control signals.
  • the operator O can use his feet to control the foot-pedals 318 to change the configuration of the surgical system and generate additional control signals to control the robotic surgical instruments.
  • the computer 151 may include one or microprocessors 302 to execute instructions and a storage device 304 to store software with executable instructions that may be used to generate control signals to control the robotic surgical system 100.
  • the computer 151 with its microprocessors 302 interprets movements and actuation of the touch sensitive handles (and other inputs from the operator O or other personnel) to generate control signals to control the robotic surgical instruments 101 in the surgical worksite.
  • the computer 151 and the stereo viewer 312 map the surgical worksite into the controller workspace 316 so it feels and appears to the operator that the touch sensitive handles are working over the surgical worksite.
  • Surgical instruments 101 A, 101 C on the robotic surgical arms 158A,158C with the strap drive typically include elongated shafts, with proximal and distal ends.
  • End effectors are generally mounted on wrist-like mechanisms pivotally mounted on the distal ends of the shafts, for enabling the instruments to perform one or more surgical tasks.
  • the elongated shafts of surgical instruments allow the end effectors to be inserted through entry ports in a patient's body so as to access the internal surgical site. Movement of the end effectors is generally controlled via master controls on the control console 150.
  • surgical instrument 428 generally includes an elongated shaft 430 having a proximal end 433 and a distal end 431, a pivot 432, an end effector 438 disposed at the distal end, and an instrument base 434 disposed at the proximal end.
  • Base 434 is generally configured to releasably engage an interface member of the robotic surgical system, such as robotic surgical system 110 in Figure 1.
  • instrument 428 is engaged with the system via base 434 such that instrument 428 is releasably mountable on a carriage which can be driven to translate along an insertion axis.
  • shaft 430 is rotatably mounted on base 434 for rotation about an axis 429 extending longitudinally along the shaft 430 as indicated by the arrows A.
  • an end effector when mounted on a surgical manipulator or robotic surgical arm assembly 158A,158C; an end effector
  • ISRG00271 438 may have a plurality of degrees of freedom of movement relative to manipulator arm 158A,158C, in addition to actuation movement of the end effector itself.
  • the instrument may be translated along an insertion axis.
  • the instrument degrees of freedom include rotation about the axis 429 as indicated by arrows A, and in the case of instruments 428 including pivots 432, angular displacement as a whole about pivot 432 as indicated by arrows D.
  • the distal pivoting degree of freedom may be omitted.
  • a single pivot wrist, a multi-pivot wrist, a distal roll joint mechanism, or other joints or wrist-like mechanisms may be included to provide additional operational degrees of freedom to the end effector.
  • End effector 438 relative to manipulator arm 158A,158C controlled by appropriately positioned actuators, such as electric motors, or the like, which respond to inputs from an associated master control at the control station 150, so as to drive the end effector 438 to a required orientation as dictated by movement of the associated master control.
  • actuators such as electric motors, or the like
  • base 434 of surgical instrument 428 suitably includes transmission members 470, 472, 474, and 476, which include spools secured on shafts 470.1, 472.1, 474.1, and 476.1.
  • Ends of shafts 470.1, 472.1, 474.1, 476.1 generally extend from a side 477 of base 434 to a mounting plate 478 within base 434 and are configured to rotate.
  • the ends of shafts 470.1, 472.1, 474.1, 476.1 at side 477 of base 434 extend through side 477, to an outer surface of side 477 (not shown).
  • each shaft 470.1, 472.1, 474.1, 476.1 includes an engaging member (not shown) configured to releasably couple with a complementary engaging member (not shown) rotatably mounted on the carriage of a robotic arm assembly 158A,158C.
  • the engaging members on carriage are generally coupled to actuators (not shown), such as electric motors or the like, to cause selective angular displacement of each engaging member on the carriage in response to actuation of its associated actuator.
  • actuators such as electric motors or the like
  • FIG. 5A a perspective view of the robotic surgical arm 158A,158C is illustrated.
  • the robotic surgical arms 158A,158C are for coupling to robotic surgical tools 101 A,101C such as the robotic surgical tool 428 illustrated in Figures 4A-4B.
  • the robotic robotic arms 158A,158C are for coupling to robotic surgical tools 101 A,101C such as the robotic surgical tool 428 illustrated in Figures 4A-4B.
  • the robotic robotic arms 158A,158C are for coupling to robotic surgical tools 101 A,101C such as the robotic surgical tool 428 illustrated in Figures 4A-4B.
  • the first link (Link 1) 541 is pivotally coupled to a drive mount 540 at a first joint 511 near a first end and the second link (Link 2) 542 at the second joint 512 near a second end.
  • the third link (Link 3) 543 is pivotally coupled to the second link 542 near a first end and pivotally coupled to the fourth link (Link 4) 544 near a second end.
  • the fourth link is substantially in parallel to the insertion axis 574 of the robotic surgical tool.
  • a fifth link (Link 5) 545 is slidingly coupled to the fourth link 544.
  • a sixth link (Link 6) 546 is slidingly coupled to the fifth link 545.
  • Various types of surgical tools 428 couple to the sixth link 546.
  • the robotic surgical arms 158A,158C further include a mounting base 540 that allows them to be mounted and supported by set-up arms/joints of a carl mount, ceiling mount, floor/pedestal mount, or other mounting surface of a patient side system.
  • the mounting base 540 is pivotally coupled to the first link 541 to yaw the serial linkage of the robotic surgical arm about a yaw axis.
  • the third link 543 has a bend with respect to the pitch axis that is offset from center.
  • the bend in the third link allows the links 542-544 to be brought more closely together and provide a greater range of pitch in the robotic arm, as is illustrated in Figures 8A-8C.
  • the bend may be formed at different angles depending upon the lengths and shapes of the other links.
  • the third link is shaped somewhat like a hockey stick.
  • the third link 543 may alternately be referred to as a bent link, the main bent link, or a hockey stick shaped link.
  • the first link 541 is shaped to be offset from the yaw axis and also has a bend with respect to the pitch axis as is illustrated by Figures 5A-5B and 6A. With no yaw, the second link 542 provides a vertical motion in the third link 543.
  • the second link 542 may house the motor to drive the linkage of the arm.
  • the second link 542 may also be referred to as the vertical link or the drive link.
  • the fourth link 544,544' typically slidingly holds the robotic surgical tool or the endoscopic camera through the fifth and sixth links
  • the fourth link may also be referred to as the instrument holder link.
  • a perspective view of the robotic surgical arm 158B is illustrated.
  • the robotic surgical arm 158B is for coupling to an endoscopic camera 101 B.
  • the robotic surgical arm 158B is of a simpler design in that it may have fewer links as illustrated. Additionally, an endoscopic camera does not have an end effector that is controlled so that fewer motors, cables, and pulleys may be employed. However for the purposes of overall movement (i.e., pitch and yaw) to which the embodiments of the invention pertain, the elements of the robotic surgical arm 158B are similar to the elements of the robotic surgical arms 158A,158C.
  • the robotic surgical arm 158B includes serial links 541-543,544' pivotally coupled in series at joints 512-514
  • the links 541-543 and joints 512-514 are generally described previously with respect Io Figure 5A and not repeated here for brevity.
  • the third link (Link 3) 543 is pivotally coupled to the second link 542 near a first end and pivotally coupled to the fourth link (Link 4) 544' near a second end.
  • the fourth link 544' is substantially in parallel to the insertion and optical axes 574 of the endoscopic camera 101B.
  • a fifth link (Link 5) 545' is slidingly coupled to the fourth link 544'.
  • the endoscopic camera 101 B mounts to the fifth link 545' as shown in Figure 5B.
  • the first link 541 may be referred to as an offset yaw link 541 or a parallelogram linkage base 541.
  • the second link 542 may be referred to as a lowered vertical link 542 or drive link 542.
  • the third link 543 may be referred to as the main bent link 543.
  • the fourth link 544 may be referred to as the instrument holder link 544.
  • Links 541-543 may also be referred to as rigid links. Additionally, the term “joint” may be used interchangeably herein with the term "pivot”.
  • the fixed remote center point 666 is near the point of insertion of the surgical tool into the patient P.
  • the center of rotation 666 may be aligned with the incision point to the internal surgical site, for example, by a trocar or cannula at an abdominal or thoracic wall during laparoscopic or thorascopic surgery.
  • the embodiments of the robotic surgical arm may also be referred as an offset remote center manipulator instead of robotic surgical arm or surgical manipulator.
  • the robotic surgical arms 158A- 158 C have a strap and pulley drive train system to control the pivoting of the links about the joints 512-514.
  • the term “strap” may be used interchangeably with the terms “belt” and “band” herein to mean a segment of one or more material layers that are not formed in a continuous loop. If a continuous loop of one or more material layers is to be referenced herein, the phrase “continuous belt” or loop may be used.
  • straps may be used to couple to the pulleys of the drive train system.
  • FIG. 6A-6B a schematic diagram of the strap drive train of a first embodiment of a robotic surgical arm 600 is illustrated. Perspective views of the robotic surgical arm 600 including the strap drive train are illustrated in Figures 6C6-6D.
  • the robotic surgical arm 600 may be used in the structure of the arras 158A-158C illustrated in Figures 1, 2, 5A-5B in one embodiment of the invention.
  • the strap drive train of the robotic surgical arm 600 drives the weight or load of the robotic arm itself from the links, joints, pulleys, cables, straps, etc. and the load that may be placed on it by the surgical tool in the surgical site. Without the strap drive train, the robotic arm would collapse and a remote center point 666 would not be maintained.
  • the strap drive train of the robotic surgical arm 600 includes six pulleys 604, 608A, 608B, 610, 612A, 612B and four straps 624A, 624B, 626A, 626B in one embodiment of the invention.
  • the six pulleys 604, 608A, 608B, 610, 6 ⁇ 2A, 612B and four straps 624A, 624B, 626A, 626B are configured with the links and joints or the robotic surgical arm 600 to constrain the motion of the shaft 430 of the surgical tool or endoscopic camera relative to the center of rotation 666.
  • straps 624A-624B are coupled between pulleys 604 and 608A.
  • the straps 626A-626B are coupled between pulleys 608B,610 and ride over the idler pulleys 612A,612B, respectively, in one embodiment of the invention.
  • pulley 604 is rigidly coupled to the first link 541.
  • pulleys 608A and 608B are concentric but have a separation that allows them to freely rotate independent of each.
  • pulley 608A is rigidly coupled to the third link 543 and pulley 608B is rigidly coupled to the second link 542.
  • pulley 610 is rigidly coupled to the fourth link 544.
  • the first link may have a hollow solid body to route electrical cabling for power, ground, and control signaling.
  • the second link 542 has a housing that is somewhat "D" shaped to support a plurality of motors in a compact structure. Panels of the housing may be removed to gain access to the motors and the drive straps for assembly and maintenance purposes.
  • the third link 543 has a housing shaped like a hockey stick with a bend to support the increased motion of the robotic surgical arm as is further described herein.
  • the housing of the third link also has panels on top and to the sides that may be removed to gain access to the drive straps and the pulleys.
  • a robotic surgical arm 600' is illustrated as a preferred embodiment of the invention.
  • Figure 7B illustrates a top view of the robotic surgical arm 600' in a fully pitched position to better see the strap drive train. While the robotic surgical arm 600' includes links and joints of the surgical arm 600 as described herein, the strap drive train differs in the third link 543' in that it includes three straps. The differences in the third link 543 and 543' are
  • the strap drive train of the robotic surgical arm 600' includes five pulleys 604, 608A, 608B, 610, 612' and five straps 624A 3 624B, 626A, 627, 628 in one embodiment of the invention.
  • the five pulleys 604, 608A, 608B, 610, 612 > and five straps 624A, 624B, 626A, 627,628 are configured with the links and joints of the robotic surgical arm 600' to constrain the motion of the shaft 430 of the surgical tool or endoscopic camera relative to the center of rotation 666.
  • straps 624A-624B are coupled between pulleys 604 and 608A.
  • a single idler pulley 612' maybe used.
  • the strap 626 A is coupled between pulleys 608B, 610 and rides over the idler pulley 612'; the strap 627 is coupled between pulleys 612', 610; and strap 628 is coupled between pulleys 608B, 612', in this embodiment of the invention.
  • the separation between pulleys 608 A and 608B allows them to freely rotate about each other even though pulley 608A is rigidly coupled to the third link 543' and pulley 608B is rigidly coupled to the second link 542.
  • pulleys 608A-608B are concentric, independently pivoting about the same center axis.
  • the pulley 604 is rigidly coupled to the first link 541.
  • pulley 610 is rigidly coupled to the fourth link 544.
  • the robotic surgical arm 600' is substantially similar to the robotic surgical arm 600 and its description is incorporated here by reference as the same reference numbers are used,
  • the straps 624A, 624B, 626A, 626B in the robotic surgical arms 600 and the straps 624A, 624B, 626A, 627,628 in robotic surgical arm 600' may also be referred to as flexible elements and may include straps, belts, chains, or cables connected around the pulleys 604, 608A, 608B, 610, and 612A, 612B or 612'.
  • the straps comprise multiple layers of multiple plies of metal.
  • the multiple plies of metal are formed out of stainless steel belts having a breaking strength of approximately 800 lbs or more and being about a quarter inch wide.
  • the belts are preferably multi-layered utilizing at least two or three plies, preferably five or six plies to be strong enough to carry an adequate tension load yet sufficiently thin enough to not fatigue when repeatedly bent around the pulleys.
  • the straps 624A, 624B and 626A, 626B or 626A,627,628 are only segments and are offset from each other, they provide stress reduction, particularly at the attachment points, thus minimizing failures. Further, the straps allow for convenient tension and position adjustments as is further
  • straps 624A, 624B as well as straps 626A, 626B may each optionally comprise a continuous single belt.
  • the metal straps may be loosely coupled to flat flex cables that carry electrical signals along the manipulator arm as further described in U.S. provisional patent application no. 60/752,788.
  • the straps are preferably formed of multiple plies of metal, multi-ply belts of other materials, single-ply belts of other materials, mechanical cables, multiple mechanical cables, timing belts with teeth, or other types of drive straps may be used.
  • Pulleys 604 and 608A have approximately the same diameter, e.g., 2.2 inches. Smaller pulleys 608B and 610 have approximately the same diameter, e.g., 1,8 inches.
  • pulley 604, 608A, 608B, 610, 612A, 612B, 612' can include wheels, gears, sprockets, pulleys with bullnose pins, and the like.
  • drive train means that may be used in the robotic surgical arm such as a continuous toothed timing belt with a timing gear, mechanical cables (one or more in parallel together) with shouldered pulleys, chains with sprockets, continuous perforated metal tapes around pulleys with bull nose pins, as well as other like drive train,
  • the robotic surgical manipulator or robotic surgical arm 600 includes a plurality of links 541-544 coupled together through a series of joints 511-514.
  • the first link 541 also referred to as the parallelogram linkage base 541 supports the instrument holder link 546 through the rigid links 542, 543 coupled together by the rotational pivot joints 512, 513, 514.
  • the links of the robotic surgical arm include an offset yaw link 541, a lowered vertical link 542, and a main bent link 543.
  • the main link 543 is bent at an angle so as to provide clearance for the vertical link 542 to rest on the main bent link 543. This clearance prevents inter-linkage collisions between the vertical link 542 and the main bent link 543.
  • the main link 543 may be bent at an angle of about twenty- two degrees to allow clearance over a pitch dive 872 as shown in Fig. 8C.
  • the main bent link 543 and the vertical link 542 as well as the instrument holder 546 are located in the same plane. It
  • main link 543 and the vertical link 542 may alternatively be offset in different planes (i.e., placed side by side) to reduce inter-linkage collisions in lieu of bending main link 543.
  • the vertical link 542 pivot 512 is lower relative to the yaw axis 656 so as to provide the offset parallelogram 864 arrangement discussed further below.
  • the yaw link 541 is offset from links 542, 543. That is, the yaw link 541 and links 542, 543 are not in the same plane, but are rather offset side by side so as to reduce the possibility of inter-linkage collisions between link 541 and links 542, 543.
  • a yaw axis 656 about which the robotic arm rotates, a pitch axis (which is perpendicular to the page) about which the robotic arm pitches, and an insertion axis 674 along which the shaft 430 is moved intersect with each other at the remote center 666.
  • the surgical tool 428 can be pivotally rotated though desired yaw angles 658 around the yaw axis 656 and pivotally rotated though desired pitch angles 872 around the pitch axis (see Figures 8A- 8C), while the remote center of rotation 666 remains at a fixed point in space relative to the mounting base 540 and set up arm 156,156'.
  • the links and joints of the entire manipulator 600 are generally moved by the strap drive train to maintain and re-position the remote center 666 while the surgical tool 428 is being pitched and yawed. It will further be appreciated that the surgical tool 428 still has further degrees of freedom supported by the robotic arm 600, including a sliding motion of the surgical tool along the insertion axis 674.
  • an offset remote center parallelogram manipulator linkage assembly (links 541-544 and joints 511-514) is provided.
  • the offset remote center parallelogram manipulator linkage assembly (links 541-544 and joints 511-514) defines a parallelogram 864 (illustrated in Figure 8A-8C) so as to constrain the elongated shaft 430 of the instrument 428 relative to the center of rotation 666 when the instrument 428 is mounted to the instrument holder 546 and the shaft 430 is moved along a plane of the parallelogram 864.
  • a top long side 868A of the parallelogram 864 is defined as the distance between axes of rotation at joints 513 and 514 generally defined by the third link 543.
  • a left short side 867A of the parallelogram is defined as the distance between axes of rotation at joints 512 and 513 generally defined by the second link 542.
  • the strap drive train is assembled in the robotic arm with the
  • the yaw axis 656 and the parallelogram 864 intersect the insertion axis 674 of the shaft 430 at the remote center of rotation 666.
  • the parallelogram 864 is angularly offset from the yaw axis 656 by an angle Alpha. That is, the robotic arm 600 offsets or decouples the first joint 512 and the first side 868B of the parallelogram 864 from the yaw axis 656 by the angle Alpha.
  • the angle Alpha may be in a range from about two degrees to about forty five degrees and preferably falls in a range from about two degrees to about thirty five degrees. This offset enhances the range of motion in the instrument 428 about the remote center point 666 relative to the pitch axis, as indicated by arrow 872.
  • the manipulator 600 further allows for an enhanced range of motion relative to the yaw axis 656, as indicated by arrow 658.
  • An improved pivot range of motion along pitch and yaw axes in turn enhances the efficiency and ease of use of the robotic surgical arm in a robotic surgical system.
  • FIGS 8A-8C illustrate, when the robotic surgical arm 600 is pitched, the first link 541 and the third link 543 are kept from rotating relative to each other by the straps 624A, 624B coupled between the two pulleys 604, 608 A and by the pulley 604 being rigidly fixed to the first link 541 and pulley 608A being rigidly fixed to the third link 543. That is, the third link 543 can be translated by the second link 542, but the angular orientation of third link 543 with respect to first link 541 is substantially the same.
  • the second link 542 and the fourth link 544 are likewise kept from rotating relative to each other. In one embodiment of the invention, this is accomplished by the straps 626A, 626B coupled between pulleys 608B and 610 and running over the idler pulleys 612A, 612B; and by pulley 608B being rigidly fixed to the second link 542 and by the pulley 610 being rigidly fixed to the fourth link 544.
  • this is accomplished by the strap 626A coupled between pulleys 608B and 610 running over the idler pulley 612'; and strap 628 coupled between pulleys 608B, 612' and strap 627 coupled between pulleys 612',610; with pulley 608B being rigidly fixed to the second link 542 and pulley 610 being rigidly fixed to the fourth link 544.
  • links 541 and 543 can translate but not rotate relative to each other to maintain the parallelogram shape 864.
  • links 542 and 544 can translate but not rotate relative to each other to maintain the parallelogram shape 864.
  • the mounting base 540 includes a motor 601 illustrated in Figure 6A to yaw the robotic arm 600 about the axis 656 as illustrated by the arrow 658 in Figures 6A, 6B, and Figures 8A-8C.
  • the motor 601 illustrated in Figure 6A to yaw the robotic arm 600 about the axis 656 as illustrated by the arrow 658 in Figures 6A, 6B, and Figures 8A-8C.
  • ISRG00271 mount ng ase 5 nc u es e ectr ca an mec an ca connectors to mate w t e ectr ca an mechanical connectors 650 in a base support coupled to the set up arm 156,156'.
  • fasteners 662 such as bolts
  • a lever arm maybe used to lock and unlock the arm 600 from the arms 156,156' to quickly mount and dismount the robotic surgical arm from the patient side system.
  • the second link 542 includes a motor 602 coupled to the pulley 604 to pitch the robotic arm 600 as illustrated in Figures 8A-8C.
  • the motor may couple to the pulley through spur gears and a harmonic drive.
  • the motor 602 in the second link 542 pivots the second link at the shaft and axis of the pulley 604 at the second joint 512 that in conjunction with the other elements, causes the robotic arm 600 to pitch.
  • the motor 602 actively moves the linkage of the arm 600 in response to commands from a computer processor 151 generated by the control input 160 at the console 150.
  • Additional motors (shown in Figure 6E) are mounted in the links of the robotic arm 600 to articulate a wrist 431 at the distal end of the tool 428 about at least one, and often two, degrees of freedom.
  • An addition motor (shown in Figure 6E) can be used to actuate an articulatable end effector 438 of the tool 428 for grasping tissues in the jaws of a forceps or the like.
  • Control cables may be used to couple the motors to the controllable features of the tool 428, as more fully described in U.S. Patent No. 5,792,135, the full disclosure of which is incorporated herein by reference.
  • At least one of the rigid links 541, 542, 543 coupled together by rotational pivot joints 512, 513, 514 are not completely balanced, relative to gravity, in at least one degree of freedom.
  • a brake system may be coupled to the articulate linkage assembly 600.
  • the brake system releasably inhibits articulation of at least one of the joints 512, 513, 514.
  • the offset remote center manipulator 600 may comprise a lighter system as the linkage is free of any counterbalancing weights.
  • the links 541, 542, 543 will preferably comprise sufficiently rigid and stiff structures so as to support any vibration issues associated with a lighter surgical manipulator 600.
  • the offset remote center manipulator 600 may optionally be balanced by the use of weights, tension springs, gas springs, torsion springs, compression springs, air or hydraulic cylinders, torque motors, or combinations thereof.
  • the straps in each link drive the pitch axis of the robotic surgical arm.
  • the first set of straps 624A-624B in the second link 542 are used to connect pulley 604 to pulley 608A in a 1 :1 ratio (i.e., pulleys are of the same diameter).
  • joint pulley 604 is rigidly connected to the first link (Link 1) 541 and joint pulley 608A is rigidly connect to the third link (Link 3) 543.
  • one unit of rotation of the second link (Link 2) about the second joint 512 in one direction causes one unit of rotation of the third link (Link 3) about the third joint 513 in an opposite direction (e.g., counter clockwise).
  • the first set of straps ensures that the third link 543 maintains the same angle relative to the first link 541, as the robotic surgical arm's pitch axis is moved.
  • the second set of straps in the third link 543 are used to connect joint pulley 608B to joint pulley 610 in a 1 :1 ratio.
  • Joint pulleys 608 A and 608B are free to rotate about each other at the third joint 513.
  • pulley 608B is rigidly connected to the second link (Link 2) 542 and pulley 610 is rigidly connected to the fourth link (Link 4) 544.
  • One unit of rotation of the second link (Link 2) about the second joint 512 causes one unit of rotation of the fourth link (Link 4) about the fourth joint 514.
  • the first and second set of straps ensures that the fourth link (Link 4) 544 maintains the same angle relative to the second link (Link 2) 542, as the robotic surgical arm's pitch axis is moved.
  • a pair of idler pulleys are provided near the bend in the link in one embodiment of the invention.
  • the pair of idler pulleys direct one or more of the straps of the strap drive system in the link housing from one end to the other through the bend of the link.
  • one or more of the straps may bend around the idler pulleys of the third link 543 to facilitate the hockey-stick shape and provide the proper kinematics and range of motion for the robotic surgical arm.
  • a two-strap drive system is used for connecting pulleys in the third link 543 in one embodiment of the invention.
  • a three-strap drive system is used for connecting pulleys in the third link 543 in another embodiment of the invention.
  • the system 900 includes the two straps 626A-626B, the joint pulleys 608B 5 610, and the idler pulleys 612A-612B for each respective strap 626A-626B.
  • Each of the straps partially wraps around each pulley side-by-side over a wrap angle with the ends of the straps being rigidly coupled to the joint pulleys 608B,610 so that no backlash occurs.
  • the two straps 626A-626B are partially wrapped around the joint pulleys so as to move in opposite directions when the links are moved. That is, the ends of strap 626A are wrapped around each joint pulley in an opposite
  • each strap 626A-626B wraps around it's own respective idler pulley 612A- 612B, because the belts rotate in opposite directions about them.
  • the idler pulleys 612A, 612B allow the straps 626 A, 626B to navigate around the bend in the third link 543.
  • the idler pulleys are also used to tension the straps as discussed further below. Otherwise, the idler pulleys are passive idlers.
  • the system 900 may be advantageous for single-ply straps or cables, as it requires only two straps.
  • the straps are formed of a plurality of layers or plies of material.
  • each of the straps includes a plurality of metal layers or plies.
  • the plurality of layers or plies provides a safety redundancy over that of a single cable or single ply strap or belt. If any single ply breaks in a multi-ply strap due to a manufacturing defect, fatigue, or overload for example, the remaining plies prevent the robotic surgical arm from collapsing.
  • Strap 626A includes a plurality of metal layers or plies 902A-902N each having the same width and thickness.
  • the plurality of metal layers or plies 902A-902N are stacked one on top of the other and may jointly be referred by reference number 901 A.
  • each metal layer 902A-902B is steel.
  • other types of metal, alloy, or other materials can be used.
  • There is no adhesive between the metal layers so they are allowed to freely move over each other at midspan and over the idler pulley. This helps to reduce the stress in the layers of the belt while the plurality of layers provides a high stiffness and strength.
  • the multiple metal layers or plies 901 A are only joined together at their ends such as by a tab 912 as illustrated in Figure 9D.
  • the layers may be joined to the tab 912 by welding in one embodiment of the invention.
  • Other devices may be used to join one or both ends of the multiple metal layers or plies together, such as a hooked tab or tensioning block, as is described further below.
  • strap 626B is reverse bent over the idler pulley in comparison with how it wraps around the joint pulleys. That is, one side of the strap wraps around the joint pulleys while the opposite side wraps around the idler pulley. This can cause increased fatigue in the strap 626B unless alleviated by its design.
  • Strap 626B includes a plurality material layers 901B.
  • the plurality of material layers 901B includes metal layers 902A-902B sandwiching a layer 904 of antifriction material such as a layer of Teflon, carbon, grease, oil or other type of dry or wet lubricant.
  • the antifriction material layer 904 allows the metal layers 902A-902B to more freely slide against each other as the strap is reverse bent over the idler pulley. Additional pairs of antifriction material layer 904 and metal layers 902 may be stacked on top of the prior metal layer to provide additional strength for the strap.
  • the metal layers or plies 902A-902B each have the same width and thickness. Similar to strap 626A, the material layers 901B are only joined together at the ends of the strap a tab 912 as illustrated in Figure 9D. The metal layers may be joined to the tab 912 by laser welding in one embodiment of the invention.
  • the multi-ply metal straps are an enabling technology for the robotic surgical arm due to their high stiffness and strength, zero backlash, low hysteresis, low friction, compact packaging, and redundant construction for safety. Their ability to bend around idler pulleys in third link (Link 3) 543 also enables the hockey-stick shape for proper kinematics and range of motion.
  • three straps are used in the third link to couple between the joint pulleys to avoid use of an antifriction layer between plies of the strap 626B.
  • Figure 1OA a perspective view of a three-strap drive system 1000 used in a third link is illustrated.
  • the system 1000 includes the three straps 626A,627-628; joint pulleys 608B, 610; and idler pulley 612' .
  • two idler pulleys could be used; one for strap 626 A, and another for straps 627, 628.
  • each of the straps partially wraps around each pulley side-by- side over a wrap angle with first ends of straps 627-628 and two ends of strap 626A being rigidly coupled to the respective joint pulleys 608B, 610 and second ends coupled to the idler pulley 612' so that no backlash occurs.
  • the straps 626 A, 628 are partially wrapped around the joint pulley 608B so they will also move in opposite directions when the links are moved.
  • the straps 626A, 627 are partially wrapped around the joint pulley 610 so they will also move in opposite directions when the links are moved. That is, the ends of strap 626A,628 are wrapped around joint pulley 608B in opposite directions and the ends of straps 626A,627 are wrapped around joint pulley 610 in opposite directions. However, while the ends of straps 627,628 are wrapped around idler pulley 612' in opposite directions, they move in the same direction (e.g., from left to right or right to left) as the links are moved. Even though the three straps are routed side by side in the link housing, effectively they act as one continuous loop
  • the idler pulley 612' is used in the system 1000 to negotiate the bend in the third link (Link 3) 543 (i.e.- hockey-stick shaped link).
  • Link 3) 543 i.e.- hockey-stick shaped link.
  • one end of the straps may be used to generate tension in each strap between the pulleys.
  • the idler pulley 612' may be used to tension the straps.
  • the idler pulley 612' is a passive idler.
  • each strap may be formed of the same layers including a plurality of metal layers or plies 902A-902N each having the same width and thickness.
  • the plurality of metal layers or plies 902A-902N are stacked one on top of the other and may jointly be referred by reference number 901 A.
  • each metal layer 902A-902B is steel Alternatively, other types of metal, alloy, or other materials can be used. There is no adhesive between the metal layers so they are allowed to freely move over each other at midspan over the idler pulley.
  • the multiple metal layers or plies 901 A are only joined together at their ends by a tab 912 as illustrated in Figure 9D.
  • the layers may be joined to the tab 912 by welding in one embodiment of the invention.
  • the three strap system 1000 has some advantages. For any strap or cable (single ply or multi ply), the three-strap configuration eliminates reverse bending, to avoid fatigue caused by alternating stresses. In the case of multiple plies or layers, the three strap system eliminates pinching and stretching of plies at the idler pulley due to reverse bending, further allowing the anti-friction layer to be avoided in the formation of the straps. Another advantage of the three strap system is that a single idler pulley may be used, since all straps are being rotated in the same direction at the idler pulley 612'. Moreover, a single idler pulley may be used to tension all three straps in the system 1000.
  • multi-layer or multi-ply metal straps in the drive train of the robotic surgical arm has a number of advantages over using metal mechanical cables.
  • the multi-ply straps are more reliable, have a greater stiffness, have an excellent ability to maintain tension, and have superior strength than cables.
  • using conductive metal or alloy materials for the plies or layers of the metal straps assists in grounding the robotic surgical arm since they are electrically conductive.
  • the straps of the robotic surgical arm maybe coupled to the pulleys without use of a fastener, such as a bolt or rivet.
  • a hooking system 1100 is used to couple one or both ends of the straps to the pulleys 1101.
  • a tensioning system 1300,1400 may be used to couple the opposite end of the straps to the opposite pulleys 1301,1401.
  • Use of the hooking system is advantageous in that it makes it faster and easier to replace and assemble the straps in the robotic surgical arm.
  • a possible failure mode is eliminated such that the hooking system is safer.
  • the hooking system can provide further safety by avoiding being unhooked in the event of slacking of the strap.
  • the strap hooking system 1100 includes a pulley 1101 having a pocket 1102 and a strap 1110 with an end tab 1112 coupled at an end.
  • the pulley 1101 further includes a recess 1103 in its circumference that is at least as wide as the strap 1110.
  • the recess 1103 becomes progressively deeper until it joins with the pocket 1102.
  • the recess ends at the lip 1105.
  • the tab 1112 is a rectangularly shaped geometric solid (e.g., rectangular prism) in one embodiment of the invention including a front side, a back side, and left and right sides formed by a thickness of the tab.
  • the tab 1112 further includes a bottom surface and an opposing top surface to couple to a bottom surface of the strap 1110.
  • the width of the tab may be substantially similar to the width of the strap.
  • the strap 1110 is a metal strap having one or more layers or plies as discussed previously with reference to Figures 9B and 1OB.
  • the tab 1102 is preferably a metal tab and the strap 1110 may be coupled to the tab 1102 by welding as illustrated by the welds 1114. hi other embodiments of the invention, the strap and tab may be coupled together by other means.
  • the pocket in the pulley is shaped to receive the tab 1112.
  • the pocket 1102 includes a lip 1105 at the back of the pocket to retain the tab therein.
  • the strap is sufficiently stiff enough to behave as a beam, which is relaxed when it is straight.
  • the lip 1105 exerts a force on the tab to retain it in the pocket.
  • it wants to straighten and exerts a load on the tab that attempts to rotate the tab clockwise with reference to the view of Figure 11C.
  • he pocket further includes a stop 1106 at the front of the pocket 1102 to couple to a front side of the tab 1112.
  • the stop 1106 is where significant forces from the strap on the tab 1112 meet the pulley.
  • the pocket 1102 further includes a side restraining protrusion 1107 extending from the stop 1106 to retain the tab therein against side forces that may be placed on the strap 1110.
  • the tab 1112 and strap 1110 hook into and unhook from the pocket 1102 around the circumference of the pulley 1 101, in contrast to being slid out through a side of the pulley. This allows easier replacement of the belts where sides of the pulley are constrained to a limited area.
  • the tab 1112 in the pocket 1122 and the strap under tension there is a first gap 1121 between an edge of the lip 1105 and the end of the strap 1110 and a second gap 1123 between a back stop of the pocket 1102 and the tab 1112 as illustrated best by Figure 1 ID.
  • the first and second gaps 1121,1123 allow a maintenance person to hook and unhook the strap to the pulley.
  • the maintenance person To unhook the strap from the pulley, the maintenance person first slackens the strap and slides it and the tab backward away from the stop 1106, and tilts the back side of the tab downward in lhe pocket, as illustrated in Figure 11C by lifting the strap upward at a point away from the end, such as strap portion 1125 shown in Figure 11C,
  • the back side of the tab is inserted into the recess and down into the pocket.
  • the tab and strap are pushed forward toward the back stop of the pocket.
  • a person pushes down on the strap at a point away from the end, such as strap portion 1125, to flex the end of the strap and front side of the tab down into the pocket so that the lip 1105 is engaged by the back side of the tab.
  • the straps are wrapped around the pulleys at a strap wrap angle 1150 from a point of tangency 1152 making first pulley contact to a point 1 153 normal to the strap end at the tab as shown. Because the straps are wrapped around the pulleys at the wrap angle 1150, the amount of load seen by the ends of the straps is less than the load seen at the straight portion of the straps between pulleys (e.g., midspan). The reduced load seen at the ends of the straps is due to the friction between the straps and pulleys over the wrap angle 1150. Thus, the wrap angle 1150
  • ISRG00271 may be increased to reduce the load seen at joint between the tab and strap, which is typically the weakest segment of the strap.
  • the straps 1110 in the robotic surgical arm are metal straps having one or more layers or plies in a preferred embodiment of the invention and may be coupled to the tab 1102 by welding as illustrated by the welds 1114.
  • the welds 1114 form a heat-affected zone that locally reduce the strap's material strength. That is, the "heat affected zone" surrounding the welds is weaker than the as-rolled condition of the portion of the straps sufficiently away from the welds,
  • a reliable and safe design for the straps calls for a breaking load at the straight portion of the strap between pulleys (e.g., midspan) to be less than or equal to the breaking load at the end tabs. Because the strength of the welds 1114 have more variation at the ends of the strap than at the midspan of the strap, a sensible design to consider for the wrap angle of the straps is one where the straps nearly always break not at the welds 1114 but well away from the welds (at midspan, for example). In the embodiments of the invention, the wrap angle was increased to sufficiently meet this criteria in a majority of the cases.
  • an idler pulley is pivotally coupled to a swing arm tensioner to automatically set and maintain the correct tension in the straps.
  • a strap tensioner is part of a pin, tab, or block coupling the strap to a pulley and includes a manually adjustable screw.
  • FIG. 12A 9 a schematic side view 1200 of the robotic surgical arm 600 is illustrated including swing arm tensioners 1201, 1203.
  • the swing arm tensioner 1201 may be used to tension the straps 626A-62 ⁇ b in the third link 543.
  • the idler pulleys 612 A- 612B are pivotally coupled to the swing arm tensioner 1201.
  • the idler pulleys 612A-612B can pivot about the pulley axis independent of each other.
  • the swing tensioner 1203 maybe used to
  • swing arm tensioners can automatically adjust the tension in the straps.
  • the swing arm tensioners may also be referred to as auto-tensioners, self-adjusting tensioners, or idler-pulley swing arm tensioners.
  • the swing arm tensioner 1201 may include a mounting base 1210, apivotable shaft 1211 pivotably coupled to the mounting base, an arm 1212 having a proximal end pivotally coupled to the shaft, a torsional spring 1215 coupled at one end to the base 1210 and an opposite end to the arm 1212, a pulley shaft 1214 coupled near a distal end of the arms, and one or more idler pulleys 612A-612B, 612' pivotally coupled to the pulley shaft.
  • the two idler pulleys 612A-612B are used so the straps 626A-626B may move in opposite directions.
  • a single idler pulley sufficiently wide enough to accommodate three straps in parallel may be used as the straps 626A,627,628 are wrapped or unwrapped by the pulley rotating in the same direction.
  • the base 1210 of the tensioner couples to the housing or frame of the link for support in order to apply a force against the one or more straps.
  • the swing-arm tensioner automatically sets and maintains correct tension in bands when assembly is completed.
  • the tension T in the straps is set by torsional spring 1215 and provides for automatic adjustment of the tension in the straps.
  • the torsional spring 1215 is selected with a spring constant to set the desired tension in the straps at a given idler pulley or pulleys. With the tension being automatically set by the torsional spring, there is no need for tension calibration by a service person and thus no risk of an incorrect tension adjustment.
  • a tension spring, compression spring, leaf spring, or other means of applying a force could be used in place of the torsional spring 1215.
  • the arm of the tensioner may be locked in place by a fastener, such as a screw 1231, so that the torsional spring does not adjust tension during normal operation.
  • the screw 1231 would pass through a slot 1230 in arm 1212, and screw into a threaded hole in third link 543, thus locking the arm.
  • the tension on the straps may be periodically recalibrated in the field.
  • the fastener can lock the position of the arm 1212 relative to the base 1210 after the strap system is assembled together. To recalibrate the tension on the straps in the field, the fastener is simply removed or loosened to free the arms to swing and allow the spring to adjust the tension and then replaced or retightened.
  • a screw it may be
  • an electrically engagable brake 1250 that locks the pivotal axis through the pivotable shaft 1211 so that the torsional spring does not adjust tension during normal operation.
  • the brake 1250 may be periodically unlocked by computer 151, to allow the tension in the strap to be automatically reset. The brake 1250 is locked during surgery.
  • the electrically engagable brake 1250 may reduce maintenance costs in that a maintenance person would not be required to periodically release a fastener to adjust tension as it is automatically performed by the computer 151.
  • the brake 1250 is not an electrically engagable brake but a brake that is pneumatically, hydraulically, or engaged by other means.
  • the reaction force "R” that acts between the pulley and the straps is congruent to two and one half times the tension "T” on the straps. Changes in geometry will alter the amount of reaction force and/or tension.
  • both straps 626A,626B are automatically tensioned on the parallel idler pulleys 612A f 612B, "slack" that develops in the straps and system will be taken up approximately by both straps being self-adjusted for tension by the tensioner 1201.
  • the tensioner 1201 minimizes the rotation of the pulleys at the ends of the link as slack develops. Minimizing the rotation of pulleys in response to slackening minimizes error in the position of the remote center of motion (RCM) 666 in comparison with one idler pulley tensioner being used to tension a single strap in the link.
  • RCM remote center of motion
  • the swing arm tensioners may further include one or more swing arm sensors to quickly detect if a strap slackens indicating fatigue or if the strap fails or breaks. In this manner, the swing arm sensors provide a safety mechanism to protect a patient from harm.
  • Sensor 1232 is a through- beam sensor, and it's beam would be broken if arm 1212 moved to block it's line-of-sight. Alternatively, other types of sensors to detect position of arm 1212 could be used.
  • FIGS 13A-13D and 14 embodiments of a strap tensioner including a tensioning block coupling the strap to a pulley are now described.
  • a strap hooking system 1100 was described with elements for strapping an end of a strap to a pulley 1101.
  • the strap hooking system 1100 has elements somewhat similar to the embodiments of the strap tensioning systems 1300 and 1400 now described.
  • Figures 13A-13D illustrate the strap tensioning system 1300 that generally includes a pulley 1301 having a pocket 1302 and a strap 1310 with a tensioning block 1312 coupled at an end of the strap. But for a continuous belt, links of the robotic surgical arm having at least one strap may include at least one tensioning block 1312 to couple to a pulley 1301.
  • the pocket 1302 in the pulley 1301 is shaped to receive the tensioning block 1312.
  • the tensioning block 1312 hooks into the pocket 1302.
  • the pocket 1302 includes a lip 1305 at a back thereof to retain the tensioning block 1312 therein against longitudinal forces (i.e., the tension) placed on the strap. Additionally when no tension is being applied, a spring force in the metal strap 1310 keeps the block 1312 locked in place within the pocket so that it cannot be readily unhooked. In the event that a strap is slackened, removal of the block 1312 from the pocket is avoided so that the robotic surgical arm does not completely collapse and wildly move a surgical tool and injure a patient.
  • the pocket further includes a stop 1306 at the front of the pocket 1302.
  • the pocket 1302 further includes a side restraining protrusion 1307 extending from the stop 1306 to retain the front portion of the block therein against side forces that may be placed on the strap 1310.
  • the strap tensioning system 1300 further includes a fastener 1331.
  • the fastener 1331 has significant forces applied to it from tensioning and coupling the strap to the pulley.
  • the fastener 1331 such as a screw or bolt, has male threads 1332 at one end and a head 1333 at an opposite end with a tool receiver.
  • the tool receiver in the head receives a tool to rotate the fastener.
  • the tool receiver may be a slot, a hex socket, a cross, other type of indentation in the head, or the shape of the head itself, such as a hex head.
  • the tensioning block 1312 has a cylindrical opening 1335 with female threads 1336 to receive the fastener 1331 and mate with its male threads 1332.
  • the female threads 1336 may include a screw-lock heli-coil to keep the fastener from rotating and changing the tension.
  • the tensioning block has a limited distance to travel when being tensioned before its back side hits the front stop 1322. This distance between the block 1312 and the front stop 1322 is referred to as the tension travel distance DTT 1321.
  • the tensioning block 1312 generally includes a rectangularly shaped geometric solid (e.g., rectangular prism) portion at a front end and a cube shaped portion with the threaded opening 1335 at a back end, in one embodiment of the invention.
  • the rectangularly shaped solid portion of the block 1312 further includes a bottom surface and an opposing top surface to couple to a bottom
  • the width of the block maybe substantially similar to the width of the strap.
  • the strap 1310 is a metal strap having one or more layers or plies as discussed previously with reference to Figures 9B and 1OB.
  • the tensioning block 1302 is also preferably formed of metal so that the strap 1310 may be welded thereto by welding as illustrated by the welds 1314. In other embodiments of the invention, the strap and tensioning block may be coupled together by other means.
  • the pulley 1301 To receive the end of the strap 1310, the pulley 1301 includes a recess 1303 in its circumference that is at least as wide as the strap 1310. The recess 1303 becomes progressively deeper until it joins with the pocket 1302. The recess ends at the Hp 1305 of the pulley 1301.
  • the pulley 1301 has a cutout 1342 to receive the fastener 1331 and allow its head 1333 to rotate therein.
  • a clearance between the head 1333 and sides of the cutout 1342 are sufficient to attach a tool, such as a socket, to the head 1333 of the fastener 1331 so that it may be turned.
  • 1301 further has a cylindrical opening 1340, that is slightly larger in diameter than the fastener 1331, that extends from the cutout 1342 into pocket 1302 to allow the fastener 1331 to pass into the pocket and mate with the threaded opening 1335 in the block 1312.
  • the tensioning block 1312 and strap 1310 hook into and unhook from the pocket 1302 through the recess 1303 in the circumference of the pulley 1301, as illustrated by Figure 13C. This is in contrast to being slid out through a side of the pulley.
  • the recess in the circumference of the pulley allows easier replacement of the belts where sides of the pulley are constrained to a limited area.
  • the fastener 1331 may be inserted into the cutout 1342 and opening 1340 to mate with the threaded opening 1335 of the tensioning block 1312. To release the strap from the pulley, the fastener 1331 is first unscrewed from the block 1312. The tensioning block can then be unhooked from the pocket 1302.
  • the fastener may be manually turned by a hand tool, such as by a screw driver, socket wrench, or nut driver; or an automated tool, such as a speed driving drill with a torque clutch.
  • a hand tool such as by a screw driver, socket wrench, or nut driver
  • an automated tool such as a speed driving drill with a torque clutch.
  • the fastener 1331 is tightened by turning clockwise for standard threads and counter clockwise for reverse threads. This pulls on the tensioning block 1312 in the pocket to increase the tension on the strap.
  • the fastener 1331 loosened by turning counter clockwise for standard threads and clockwise for reverse threads. This pushes on the tensioning block 1312 in the pocket to release the tension in the strap.
  • the tension is set using a sonic tension meter, which measures the transverse frequency of vibration of the straps, when strummed.
  • the screw 1331 is adjusted until the frequency that corresponds to the desired tension is achieved. This is substantially similar to using a sonic frequency guitar tuner to set the desired tension of guitar strings.
  • a strap tensioning system 1400 is illustrated that generally includes a pulley 1401 having a pocket 1402 to receive a tensioning block 1412 with a first hook 1451, and a strap 1410 with a hooked tab 1450 with a second hook 1452 coupled at an end of the strap.
  • the strap tensioning system 1400 is somewhat similar to the strap tensioning system 1300 in operation but has a few more elements. Those elements that are identical use the same reference number and their description is incorporated here by reference. Moreover, one or more of the different elements of strap tensioning system 1400 may be incorporated into the strap tensioning system 1300, such as the heli-coil screw lock or the set screw.
  • the pocket 1402 in the pulley 1401 is shaped to receive the tensioning block 1412 and the hook 1452 coupled to the strap 1410.
  • the pocket 1402 includes a lip 1405 extending from aback side to retain the block 1412 therein against longitudinal forces (i.e., the tension) placed on the strap.
  • the pulley 1401 further has an opening 1340 and a cutout 1342 to receive the tensioning fastener 1431 as is illustrated in Figure 14.
  • the system 1400 may include a locking fastener coupled to the tensioning fastener 1431.
  • the pulley 1401 includes an opening 1454A starting at its circumference or an opening 1454B starting from a side down to the opening 1340.
  • the opening 1454A,1454B is threaded to receive a locking fastener 1456, such as a puck or set screw.
  • a distal end of the fastener 1456 couples against the tensioning fastener 1431 to lock it and keep it from rotating and altering the
  • the locking fastener 1456 may be formed of brass, such as a brass tip set screw or a brass puck.
  • the hook 1451 of the tensioning block 1412 mates with the hook 1452 of the end tab 1450.
  • the end tab 1450 is preferably welded to the strap 1410. With the strap under tension, the end tab 1450 is captured within the pocket 1402. Additionally, as was previously discussed in greater detail, without any tension a spring force in the metal strap 1410 may keep the hooks 1451-1452 mated together within the pocket so that they cannot be readily unhooked from each other. In the event that the tensioning fastener fails due to overloading of the arm and the strap is completely slackened, the hooks 1451-1452 may remain mated together so that the robotic surgical arm does not completely collapse and wildly move a surgical tool and injure a patient.
  • the pocket further includes a stop 1406 at the front of the pocket 1402.
  • the strap tensioning system 1400 includes the tensioning fastener 1431 to tension the strap 1410.
  • the tensioning fastener 1431 such as a screw or bolt, has male threads 1432 at one end and a head 1433 at an opposite end with a tool receiver.
  • the tool receiver in the head receives a tool to rotate the fastener.
  • the tool receiver may be a slot, a hex socket, a cross, other type of indentation in the head, or the shape of the head itself, such as a hex head.
  • the tensioning fastener 1431 has significant forces applied to it from tensioning and coupling the strap to the pulley.
  • the first fastener, the tensioning fastener 1431 may be a silver plated fastener, such as a silver plated screw, to minimize galling that might otherwise be caused by dissimilar metals.
  • the tensioning block 1412 and 1312 includes a screw-lock heli-coil 1446 in the opening 1335 with its threads 1336 to receive the tensioning faster 1431,1331.
  • the screw-lock heli-coil 1446 includes a couple of straight segments to squeeze on the screw and hold it in position. This increases the torque required to rotate the faster 1431,1331 and screw it in or out of the opening 1335 in the block 1412,1312. This increased torque prohibits the tensioning fastener 1431,1331 from rotating on its own and changing the tension in the strap.
  • a washer 1458 may be inserted on the tensioning fastener 1431.
  • the washer may be a star washer or a lock washer to further hold the position of the tensioning fastener 1431 when set.
  • the tensioning systems 1300 and 1400 each have a failsafe mechanism in case of failure of the fastener 1331, 1441. That is, if the tensioning fastener 1331,1431 breaks, the strap will not become free from the pulley 1301.
  • the tensioner blocks 1312, 142 are captive in their respective pockets 1302,1402 in which they reside by a moment generated by the metal strap which was discussed previously with respect to the tab 1112. If the tensioning fastener 1331,1431 breaks free from the blocks, the block and strap will only move a small distance to the back stop 1306,1406 in the pocket, such as the fail distance 1352 illustrated in Figure 13D.
  • the blocks 1312,1412 will not unhook out of their respective pockets 1302,1402 on their own. This allows for the end of the strap 1310 to be directly welded to the tensioning block 1312 as indicated by the welds 1314 in the system 1300,
  • the position of the remote center 666 is adjusted to achieve the parallelogram 864.
  • the pitch remote center 666' shown in Figure 18B must lie on the yaw axis 656 for proper kinematics, and be coincident with the remote center 666.
  • the dimension of the long side 868B of the parallelogram 864 may be controlled in part by the straps inside the third link (Link 3) 543.
  • the remote center error 1801 is defined as the distance between the pitch remote center 666' and the yaw axis 656. This remote center error 1801 may be controlled in part by the straps inside the second link (Link 2) 542.
  • the position of the remote center 666 must be calibrated during assembly and may be calibrated periodically during maintenance in the field.
  • small adjustments to the pitch remote center position 666' can be accomplished by adjusting the tensioning blocks of the tensioning systems 1300,1400 for the straps of the second link 542 and the third link 543.
  • Figures 18A - 18C illustrate a method of one embodiment of the invention to calibrate the remote center 666 with strap tensioners.
  • Figure 19 is a flowchart that further illustrates this method. The calibration method starts at block 1900 and jumps to block 1902.
  • the tensioners of straps inside the third link 543 are adjusted to calibrate the length of the long side 868B of the parallelogram.
  • the tensioning system of straps in the third link 543 can be adjusted.
  • Tensioning blocks for strap 626A and strap 626B can adjusted in opposite directions to calibrate the length of the long side 868, in the case of a two strap system in the third link 543. In the case
  • Tensioning blocks for strap 626A and strap 627 or 628 may be adjusted in opposite directions to calibrate the length of the long side S68. This slightly rotates the fourth link (Link 4) 544 about the fourth joint 514 to achieve the desired length in the long side 868B of the parallelogram 864. That is, the tensioning blocks in the third link 543 can be adjusted to set the desired length of the long side 868B from the second joint 512 to the remote center 666.
  • Figure 18B further shows an example of remote center error 1801, where the pitch remote center 666' is above the yaw axis 656.
  • the tensioners of straps inside the second link 542 are adjusted to calibrate the remote center error.
  • the third link 543 needs to be rotated clockwise about the axis of rotation at joint 513, relative to Figure 18B.
  • the tensioning screw 1331 in the tensioner block 1312 at end of strap 624A is loosened, effectively lengthening strap 624 A.
  • the tensioning screw 1331 in the tensioner block 1312 at end of strap 624B is tightened, effectively shortening strap 624B.
  • This calibration is completed and the remote center error 1801 has been substantially eliminated, when the pitch remote center 666' lays on the yaw axis 656, as shown in Figure 18C.
  • the second link 542 and the fourth link 544 are kept from rotating relative to each other by straps 626A, 626B.
  • the parallelogram 864 is maintained and the length of long side 868B is not affected. Regardless, the length of the long side 868B of the parallelogram is verified after the remote center error has been removed.
  • narrow idler pulleys To provide a compact and narrow robotic surgical arm to avoid collisions with other equipment, it is desirable to use narrow idler pulleys. With narrow idler pulleys, proper tracking of straps over idler pulleys is key to avoid strap failure. To keep straps properly tracking on narrow pulleys, a strap guide bearing system may be used.
  • Strap 626A extends a long distance between joint pulley 608B and joint pulley 610.
  • Straps 627 and 628 are constrained laterally by their attachment to the idler pulley 612', and a strap guide system is unnecessary.
  • a strap guide system 1500 is provided in link 543.
  • the strap guide system 1500 is mounted inside the housing of link 543 to an inside surface 1502 over a strap 626A such that a pair of spaced apart pulleys or roller bearings 1510A and 1510B straddle the strap 626A. In this manner, the sides of the strap 626A are laterally guided by the roller bearings 151 OA-151OB to maintain proper tracking on pulley 612'.
  • FIGS 16A-16B illustrate alternate embodiments of the strap guide system 1500.
  • the strap guide system 1500A includes the roller bearings 1510A- 151OB, mounting block 1512, an anti-friction pad 1514, dowel pins 1511A-1511B, and one or more fasteners 1516.
  • the one or more fasteners 1516 are used to hold the strap guide system mounted against the surface 1502 of the third link 543.
  • the anti-friction pad 1514 is coupled up against the mounting block 1512 by the fasteners 1516.
  • the anti-friction pad 1514 reduces abrasion of strap 626A and any flat flex cables and ground straps riding thereon by keeping them all from puffing up too much over the idle pulley 612' when they are under stress.
  • the length of the anti-friction pad 1514 is substantially parallel to the length of the belt.
  • the anti- friction or anti-abrasion pad 1514 may be a PTFE pad, a Teflon pad, or a material having a surface with a low coefficient of friction.
  • the metal belts 626A, 626B do not ride up against the anti-friction pad 1514. Normally there is a gap 153OA between the anti-friction pad 1514 and the metal strap 626A, 626B. However if there is slack in a strap, the gap 1530A may become zero and the anti-friction pad 1514 may press back on the strap.
  • the mounting block 1512 is formed of aluminum in one embodiment of the invention.
  • the rollers 1510A-1510B are ball bearings or roller bearings in one embodiment of the invention.
  • the dowel pins 1511 A-1511B are press fit and/or glued into the center race of the bearings to rotatably couple the rollers 151OA-151OB to the mounting block 1512. Alternately, the dowel pins could be an integral part of the rollers 151 OA- 151 OB .
  • Strap guide system 1500B is similar to strap guide system 1500A of Figure 16A. There are a number of duplicate elements having the same reference numbers and their description is incorporated here by reference. However, instead of an anti-friction pad 1514, a roller 1524 parallel to the width of the metal belt 626 A, 626B is used to push down on them if they or any other strap puffs up near the idler pulley 612' that might be riding on top of the metal belt. Ordinarily, the metal belt 626A, 626B does not ride up against the roller 1524. Instead there is a gap 1530B between the metal belt 626A, 626B, and the roller 1524.
  • the belt guide bearing system 1500 is compact and reliably keeps the straps tracking on the narrow idler pulley or pulleys.
  • the belt guide bearing system 1500 may also be used to control the tracking of flat flex cables and a beryllium copper ground strap along with the tensioned metal straps in a robotic surgical arm, as is more fully discussed in US provisional patent application serial no. 60/752,788 entitled "FLAT ELECTRICAL CONDUCTORS OVER PULLEYS IN A STRAP DRIVE-TRAIN OF A ROBOTIC SURGICAL ARM", filed on 12/21/2005 by Todd Solomon.
  • a camber adjustment system may be used.
  • the camber adjustment system provides means of adjusting the camber angle of the idler pulleys in order to keep the belts tracking.
  • camber adjustable pulley system 1700 is illustrated and now described.
  • One or a pair of pulleys 612A-612B may be provided in the camber adjustable pulley system 1700 to properly guide a one or a pair of straps 626A-626B, respectively.
  • the camber adjustment pulley system 1700 is mounted to the third link 543 by a bracket 1702 and fasteners 1704 as illustrated in Figure 17B.
  • pivoting or camber adjustment screws 1706 A, 1706B are provided.
  • Each of the idler pulleys 612 A, 612B are respectively supported by bearings 1710A, 1710B and pivotable pulley mounts 1712A, 1712B.
  • Each of the pivotable pulley mounts 1712A, 1712B include a pair of pivot points 1714A, 1714B, near a center of the pulley axis of each pulley 1612A, 1612B.
  • Bracket 1702 has a pair of pivot valleys 1716A, 1716B to receive the pair of pivot points 1714A, 1714B > respectively.
  • Figure 17D better shows the pair of pivot points 1714A,1714B in each of the pivotable pulley mounts 1712A,1712B.
  • An open region 1750 illustrated in Figures 17A-17B allows the pulleys 625A-625B and bearings 171 OA-1710B to rotate around the pivotable pulley mounts 1712A, 1712B and the bracket 1702.
  • FIG. 17C a magnified view of a portion of the cross-section better illustrates the camber adjustment screws 1706A, 1706B to adjust the pulley mounts 1712A, 1712B at the bracket 1702 and the third link 543.
  • Arrows 1730A and 1730B illustrate the camber range of motion in each of the pulleys 612A, 612B in response to the camber adjustment screws 1706 A, 1706B. Accordingly, the rotational axis of the pulleys 612A, 612B are tilted independently by the camber adjustment screws 1706A, 1706B.
  • camber adjustment screw 1706B is allowed to turn in a non-threaded opening 1725 A in the third link 543.
  • Camber adjustment screw 1706 A is allowed to turn a non-threaded opening 1725B in bracket 1702.
  • each camber adjustment screw 1706A, 1706B has a snap ring 1720A, 1720B to retain the head of the screws within the respective openings 1725A, 1725B.
  • each of the camber adjustment screws 1706A, 1706B are preloaded by a spring washer 1722 A, 1722B coupled between the pivoting pulley mount 1712B and the third link 543, in between the bracket 1702 in the pivoting pulley mount 1712A.
  • the spring washers 1722A, 1722B apply pressure to the pivoting pulley mounts 1712A and 1712B to force them away from bracket 1702 and the link 543 respectively.
  • the spring washers 1722A, 1722B apply a pressure between the screw threads 1726A, 1726B and the female thread of threaded openings 1728A, 172SB in the pulley mounts 1712A, 1712B so as to deter the screws 1706A, 1706B from turning freely. That is, the camber settings of the pulleys 626A,626B are maintained by deterring movement in the camber adjustment screws 1706A,1706B.
  • the elements previously described of a strap drive train system in a robotic surgical arm provide a number of advantages.
  • the strap drive train provides a reduction in friction of pitch movement of the robotic surgical arm so as to reduce the required motor power and improve back- drive-ability.
  • the strap drive train provides a high degree of stiffness in the robotic surgical arm to reduce vibrations and deflections thereof.
  • the strap drive train provides a high degree of strength in the robotic surgical arm high to increase safety to patients and assistants around the arm.
  • the strap drive train allows easy adjustment of remote center of in the robotic surgical arm to reduce manufacturing and maintenance costs.
  • the strap drive train provides a light and compact robot surgical arm that increases the range of motion and makes it easier to set up and use.

Abstract

In one embodiment of the invention, a robotic arm is provided including a linkage assembly and a strap drive train. The linkage assembly includes first, second, third, and fourth links pivotally coupled in series together at first, second, and third joints to define a parallelogram with an insertion axis. The strap drive train includes first and second sets of straps coupled to the linkage assembly. As the linkage assembly is moved about a pitch axis, the first set of straps insures the third link maintains the same angle relative to the first link, and the first and second set of straps ensures the fourth link maintains the same angle relative to the second link.

Description

MULTI-PLY STRAP DRIVE TRAINS FOR ROBOTIC ARMS CROSS REFERENCE TO RELATED APPLICATION
This non-provisional U.S. patent application claims the benefit of provisional patent application no. 60/752,514, entitled "Multi-Ply Strap Drive Train for Robotic Surgical Arm", filed by Todd R. Solomon et al on 12/20/2005, incorporated herein by reference, and provisional US patent application serial no. 60/752,788 entitled "FLAT ELECTRICAL CONDUCTORS OVER PULLEYS IN A STRAP DRIVE-TRAIN OF A ROBOTIC SURGICAL ARM", filed on 12/21/2005 by Todd R. Solomon; and this non-provisional U.S. patent application is further a continuation in part (CIP) and claims the benefit of U.S. Patent Application No. 10/957,077, entitled "Offset Remote Center Manipulator for Robotic Surgery", filed on 9/30/2004 by Thomas G. Cooper and Todd R. Solomon.
FIELD
The embodiments of the invention relate generally to robotic surgical systems. More particularly, the embodiments of the invention relate to robotic surgical arms.
BACKGROUND
Typical robotic surgical arms include a number of joints and links to provide a range of motion to form a work envelope for an end effector coupled thereto. It is desirable to improve the range of motion of robotic surgical arms to increase the work envelope of the end effectors coupled thereto to perform a wider variety of robotic surgical procedures.
Typical robotic surgical arms further include a plurality of metal control cables routed therein which are moved to mechanically control the motion of the links about the joints and the motion in the end effector. The use of the plurality of metal control cables is expensive and complicates the maintenance of the robotic surgical arms. It is desirable to reduce the manufacturing and maintenance costs of robotic surgical arms while at the same time improving its range of motion, robotic surgical procedures using one or more robotic surgical arms with a strap drive train. Figure 2 a perspective view of the robotic patient-side system of Figure 1 with the one or more robotic surgical arms having the strap drive train.
Figure 3 is a perspective view of the robotic surgical master control console of Figure 1 that is used to control the one or more robotic surgical arms with the strap drive train. Figures 4A-4B is a perspective view of an robotic surgical tool to couple to the one or more robotic surgical arms having the strap drive train.
Figures 5A-5B are perspective views of a patient side manipulator or robotic surgical arm and an endoscopic camera manipulator or robotic surgical arm.
Doc. No. ISRG00271 Figures 6A-6B are schematic side views of a first multi-strap drive train having a two-strap system in a third link.
Figures 6C-6E are various perspective views of the linkages in the robotic surgical arm with panels removed to reveal the first multi-strap drive train.
Figures 7A-7B are schematic side views of a second multi-strap drive train having a three- strap system in a third link.
Figures 8A-8C are side views of the first multi-strap drive train to illustrate the range of pitch motion in the robotic surgical arm about the remote center.
Figures 9A-9D are views of an exemplary two-strap system with multi-layer and multi-ply straps that may be used in the third link.
Figures 10A-10B are views of an exemplary three-strap system with multi-ply straps that may be used in the third link.
Figure 1 IA illustrates an exemplary two-strap system that may be used in the second link including a hooking system and a first tensioning system to couple each end of the straps to the pulleys in the links of the robotic surgical arm.
Figures 1 IB-I ID illustrate magnified views of the hooking system that may be used to couple the straps to the pulleys in the links of the robotic surgical arm.
Figure 12A illustrates a schematic view of a drive train of a robotic surgical arm with a second tensioning system that may be used to tension the straps in the second and third links.
Figures 12B-12C illustrate magnified views of the second tensioning system that may be used in the links of the robotic surgical arm.
Figures 13 A-13D illustrate magnified views of the first tensioning system that may be used to couple and tension the straps to the pulleys in the links of the robotic surgical arm.
Figure 14 illustrate a magnified view of a third tensioning system that may be used to couple and tension the straps to the pulleys in the links of the robotic surgical arm.
Figure 15 illustrates a perspective view of a strap guide system in the third link of the robotic surgical arm to track the strap onto the idler pulley.
Figures 16A-16B illustrate alternate embodiment of the a strap guide bearing that may be used in Figure 15.
Figures 17A-17E illustrate views of a camber adjustment system and its elements that may be used in the alternate to track straps onto idler pulleys
Figures 18A-18C illustrate schematic views of adjusting an offset robotic surgical arm to remote center.
Doc. No. ISRG00271 Figure 19 is a flow chart describing how an offset robotic surgical arm is adjusted to the remote center using the tension adjusting system disclosed herein
It will be appreciated that all the drawings of Figures provide for herein are for illustrative purposes only and do not necessarily reflect the actual shape, size, or dimensions of the elements being illustrated. DETAILED DESCRIPTION
In the following detailed description of the embodiments of the invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be obvious to one skilled in the art that the embodiments of the invention may be practiced without these specific details. In other instances well known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the embodiments of the invention.
The embodiments of the invention include methods, apparatus and systems for a robotic surgical system. In one embodiment of the invention a robotic surgical system is provided including one or more robotic surgical arms under the control of at least one multi-layer or multi-ply control strap.
ROBOTIC SURGICAL SYSTEM
Referring now to Figure 1, a block diagram of a robotic surgery system 100 is illustrated to perform minimally invasive robotic surgical procedures using one or more robotic arms with strap drive. Robotic surgery generally involves the use of a robot manipulator that has multiple robotic manipulator arms. One or more of the robotic manipulator arms often support a surgical tool which may be articulated (such as jaws, scissors, graspers, needle holders, micro dissectors, staple appliers, tackers, suction/irrigation tools, clip appliers, or the like) or non-articulated (such as cutting blades, cautery probes, irrigators, catheters, suction orifices, or the like). At least one of the robotic manipulator arms (e.g., the center robotic manipulator arm 158B) is used to support a stereo or three dimensional surgical image capture device 110 such as a stereo endoscope (which may be any of a variety of structures such as a stereo laparoscope, arthroscope, hysteroscope, or the like), or, optionally, some other stereo imaging modality (such as ultrasound, fluoroscopy, magnetic resonance imaging, or the like). Robotic surgery may be used to perform a wide variety of surgical procedures, including but not limited to open surgery, neurosurgical procedures (such as stereotaxy), endoscopic procedures (such as laparoscopy, arthroscopy, thoracoscopy), and the like.
Doc. No. ISRG00271 A user or operator O (generally a surgeon) performs a minimally invasive surgical procedure on patient P by manipulating control input devices 160 at a master control console 150. A computer
151 of the console 150 directs movement of robotically controlled endoscopic surgical instruments 101 A-IOlC by means of one or more control cables 159, effecting movement of the instruments using a robotic patient-side system 152 (also referred to as a patient-side cart). The robotic patient- side system 152 has one or more robotic arms 158 with the strap drive. Typically, the robotic patient-side system 152 includes at least three robotic manipulator arms 158A-158C supported by linkages 156,156', with a central robotic arm 158B supporting an endoscopic camera 101B and the robotic arms 158A,158C to left and right of center supporting tissue manipulation tools 101A3IOlC.
Generally, the robotic patient-side system 152 includes a positioning portion and a driven portion. The positioning portion of the robotic patient-side system 152 remains in a fixed configuration during surgery while manipulating tissue. The driven portion of the robotic patient-side system
152 is actively articulated under the direction of the operator O generating control signals at the surgeon's console 150 during surgery. The actively driven portion of the robotic patient-side system 152 is generally referred to herein as the robotic arms or alternatively to robotic surgical manipulators. The positioning portion of the robotic patient-side system 152 that is in a fixed configuration during surgery maybe referred to as "set up arms" 156, 156' with positioning linkage and/or "set-up joints", hi an alternate embodiment of the invention, the robotic patient- side system 152 may be replaced by set up arms that couple at one end to left and right sides of the operating table T. The three robotic manipulator arms 158A-158C may then be coupled to the opposite end of the set-up arms to ground to the table T.
For convenience in terminology, manipulators such as robotic surgical arms 158A, 158C actuating the tissue affecting surgical tools 101A5IOlC are generally referred to herein as a PSM (patient- side manipulator), and a robotic surgical arm 158B controlling an image capture or data acquisition device, such as the endoscopic camera 101B, is generally referred to herein as a ECM (endoscopic- camera manipulator), it being noted that such telesurgical robotic manipulators may optionally actuate, maneuver and control a wide variety of instruments, tools and devices useful in surgery. An assistant A may assist in pre-positioning of the robotic patient-side system 152 relative to patient P as well as swapping tools or instruments 101 for alternative tool structures, and the like, while viewing the internal surgical site via an assistant's display 154.
Referring now to Figure 2, a perspective view of the robotic patient-side system 152 is illustrated. The robotic patient-side system 152 has one or more robotic surgical arms (a.k.a., robotic surgical
Doc. No. ISRG00271 manipulators) 158A-185C with the strap drive system. The robotic surgical arms 158A,158C are for coupling to robotic surgical tools 101A3IOlC. The robotic surgical arm 158B is for coupling to an endoscopic camera 101B. The robotic patient-side system 152 further includes a base 202 from which the robotic surgical instruments 101 may be supported. More specifically, the robotic surgical instruments 101 are each supported by the positioning linkage 156 and the robotic surgical arms 158. The linkage structures may optionally be covered by protective covers or not to minimize the inertia that is manipulated by the servomechanism and the overall weight of robotic patient-side system 152.
The robotic patient-side system 152 generally has dimensions suitable for transporting between operating rooms. It typically can fit through standard operating room doors and onto standard hospital elevators. The robotic patient-side system 152 may have a weight and a wheel (or other transportation) system that allows the cart to be positioned adjacent an operating table by a single attendant. The robotic patient-side system 152 may be sufficiently stable during transport to avoid tipping, and to easily withstand overturning moments that may be imposed at the ends of the robotic arms during use.
Referring now to Figure 3, a perspective view of the robotic surgical master control console 150 is illustrated. The master control console 150 of the robotic surgical system 100 may include the computer 151 , a binocular or stereo viewer 312, an arm support 314, a pair of control inputs (control input wrists and control input arms) 160 in a workspace 316, foot pedals 318 (including foot pedals 318A-318B), and a viewing sensor 320.
The stereo viewer 312 has two displays where stereo three-dimensional images of the surgical site may be viewed to perform minimally invasive surgery. When using the master control console, the operator O typically sits in a chair, moves his or her head into alignment with the stereo viewer 312 to view the three-dimensional images of the surgical site. To ensure that the operator is viewing the surgical site when controlling the robotic surgical tools 101, the master control console 150 may include the viewing sensor 320 disposed adjacent the binocular display 312. When the system operator aligns his or her eyes with the binocular eye pieces of the display 312 to view a stereoscopic image of the surgical worksite, the operator's head sets off the viewing sensor 320 to enable the control of the robotic surgical tools 101. When the operator's head is removed the area of the display 312, the viewing sensor 320 can disable or stop generating new control signals in response to movements of the touch sensitive handles in order to hold the state of the robotic surgical tools.
Doc. No. ISRG00271 The arm support 314 can be used to rest the elbows or forearms of the operator O (typically a surgeon) while gripping touch sensitive handles of the control input 160, one in each hand, in the workspace 316 to generate control signals. The touch sensitive handles are positioned in the workspace 316 disposed beyond the arm support 314 and below the viewer 312. This allows the touch sensitive handles to be moved easily in the control space 316 in both position and orientation to generate control signals. Additionally, the operator O can use his feet to control the foot-pedals 318 to change the configuration of the surgical system and generate additional control signals to control the robotic surgical instruments.
The computer 151 may include one or microprocessors 302 to execute instructions and a storage device 304 to store software with executable instructions that may be used to generate control signals to control the robotic surgical system 100. The computer 151 with its microprocessors 302 interprets movements and actuation of the touch sensitive handles (and other inputs from the operator O or other personnel) to generate control signals to control the robotic surgical instruments 101 in the surgical worksite. In one embodiment of the invention, the computer 151 and the stereo viewer 312 map the surgical worksite into the controller workspace 316 so it feels and appears to the operator that the touch sensitive handles are working over the surgical worksite. Surgical instruments 101 A, 101 C on the robotic surgical arms 158A,158C with the strap drive typically include elongated shafts, with proximal and distal ends. End effectors are generally mounted on wrist-like mechanisms pivotally mounted on the distal ends of the shafts, for enabling the instruments to perform one or more surgical tasks. Generally, the elongated shafts of surgical instruments allow the end effectors to be inserted through entry ports in a patient's body so as to access the internal surgical site. Movement of the end effectors is generally controlled via master controls on the control console 150.
Referring now to Figure 4A, surgical instrument 428 generally includes an elongated shaft 430 having a proximal end 433 and a distal end 431, a pivot 432, an end effector 438 disposed at the distal end, and an instrument base 434 disposed at the proximal end. Base 434 is generally configured to releasably engage an interface member of the robotic surgical system, such as robotic surgical system 110 in Figure 1. In general, instrument 428 is engaged with the system via base 434 such that instrument 428 is releasably mountable on a carriage which can be driven to translate along an insertion axis.
With reference to Figures 4A-4B, shaft 430 is rotatably mounted on base 434 for rotation about an axis 429 extending longitudinally along the shaft 430 as indicated by the arrows A. Thus, when mounted on a surgical manipulator or robotic surgical arm assembly 158A,158C; an end effector
Doc. No. ISRG00271 438 may have a plurality of degrees of freedom of movement relative to manipulator arm 158A,158C, in addition to actuation movement of the end effector itself. The instrument may be translated along an insertion axis. Typically, the instrument degrees of freedom include rotation about the axis 429 as indicated by arrows A, and in the case of instruments 428 including pivots 432, angular displacement as a whole about pivot 432 as indicated by arrows D. Alternatively, the distal pivoting degree of freedom may be omitted. A single pivot wrist, a multi-pivot wrist, a distal roll joint mechanism, or other joints or wrist-like mechanisms may be included to provide additional operational degrees of freedom to the end effector. Movement of end effector 438 relative to manipulator arm 158A,158C controlled by appropriately positioned actuators, such as electric motors, or the like, which respond to inputs from an associated master control at the control station 150, so as to drive the end effector 438 to a required orientation as dictated by movement of the associated master control.
Referring now to Figure 4B, base 434 of surgical instrument 428 suitably includes transmission members 470, 472, 474, and 476, which include spools secured on shafts 470.1, 472.1, 474.1, and 476.1. Ends of shafts 470.1, 472.1, 474.1, 476.1 generally extend from a side 477 of base 434 to a mounting plate 478 within base 434 and are configured to rotate. Generally, the ends of shafts 470.1, 472.1, 474.1, 476.1 at side 477 of base 434 extend through side 477, to an outer surface of side 477 (not shown). At the outer surface, each shaft 470.1, 472.1, 474.1, 476.1 includes an engaging member (not shown) configured to releasably couple with a complementary engaging member (not shown) rotatably mounted on the carriage of a robotic arm assembly 158A,158C. The engaging members on carriage are generally coupled to actuators (not shown), such as electric motors or the like, to cause selective angular displacement of each engaging member on the carriage in response to actuation of its associated actuator. Thus, selective actuation of the actuators is transmitted through the engaging members on the carriage, to the engaging members on the opposed ends of the shafts 470.1, 472.1, 474.1, 476.1 to cause selective angular displacement of the spools 470, 472, 474, 476. Where more or fewer degrees of freedom are desired, the number of spools may be decreased or increased.
ROBOTIC SURGICAL ARMS WITH MULTIPLE CONTROL STRAPS
Referring now to Fig. 5A, a perspective view of the robotic surgical arm 158A,158C is illustrated. As discussed previously, the robotic surgical arms 158A,158C are for coupling to robotic surgical tools 101 A,101C such as the robotic surgical tool 428 illustrated in Figures 4A-4B. The robotic
Doc. No. ISRG00271 surgical arm 158A,158C includes serial links 541-544 pivotally coupled in series at joints 512-514 near respective ends of the links. The first link (Link 1) 541 is pivotally coupled to a drive mount 540 at a first joint 511 near a first end and the second link (Link 2) 542 at the second joint 512 near a second end. The third link (Link 3) 543 is pivotally coupled to the second link 542 near a first end and pivotally coupled to the fourth link (Link 4) 544 near a second end. Generally, the fourth link is substantially in parallel to the insertion axis 574 of the robotic surgical tool. A fifth link (Link 5) 545 is slidingly coupled to the fourth link 544. A sixth link (Link 6) 546 is slidingly coupled to the fifth link 545. Various types of surgical tools 428 couple to the sixth link 546. The robotic surgical arms 158A,158C further include a mounting base 540 that allows them to be mounted and supported by set-up arms/joints of a carl mount, ceiling mount, floor/pedestal mount, or other mounting surface of a patient side system. The mounting base 540 is pivotally coupled to the first link 541 to yaw the serial linkage of the robotic surgical arm about a yaw axis. The third link 543 has a bend with respect to the pitch axis that is offset from center. The bend in the third link allows the links 542-544 to be brought more closely together and provide a greater range of pitch in the robotic arm, as is illustrated in Figures 8A-8C. The bend may be formed at different angles depending upon the lengths and shapes of the other links. With the bend, the third link is shaped somewhat like a hockey stick. Thus, the third link 543 may alternately be referred to as a bent link, the main bent link, or a hockey stick shaped link. The first link 541 is shaped to be offset from the yaw axis and also has a bend with respect to the pitch axis as is illustrated by Figures 5A-5B and 6A. With no yaw, the second link 542 provides a vertical motion in the third link 543. Additionally, the second link 542 may house the motor to drive the linkage of the arm. Thus, the second link 542 may also be referred to as the vertical link or the drive link. As the fourth link 544,544' typically slidingly holds the robotic surgical tool or the endoscopic camera through the fifth and sixth links, the fourth link may also be referred to as the instrument holder link.
Referring now to Fig. 5B, a perspective view of the robotic surgical arm 158B is illustrated. As discussed previously, the robotic surgical arm 158B is for coupling to an endoscopic camera 101 B. The robotic surgical arm 158B is of a simpler design in that it may have fewer links as illustrated. Additionally, an endoscopic camera does not have an end effector that is controlled so that fewer motors, cables, and pulleys may be employed. However for the purposes of overall movement (i.e., pitch and yaw) to which the embodiments of the invention pertain, the elements of the robotic surgical arm 158B are similar to the elements of the robotic surgical arms 158A,158C. The robotic surgical arm 158B includes serial links 541-543,544' pivotally coupled in series at joints 512-514
Doc. No. ISRG00271 near respective ends of the links. The links 541-543 and joints 512-514 are generally described previously with respect Io Figure 5A and not repeated here for brevity. The third link (Link 3) 543 is pivotally coupled to the second link 542 near a first end and pivotally coupled to the fourth link (Link 4) 544' near a second end. Generally, the fourth link 544' is substantially in parallel to the insertion and optical axes 574 of the endoscopic camera 101B. A fifth link (Link 5) 545' is slidingly coupled to the fourth link 544'. The endoscopic camera 101 B mounts to the fifth link 545' as shown in Figure 5B.
As discussed previously, alternate terms may be applied to the links 541-542 herein. The first link 541 may be referred to as an offset yaw link 541 or a parallelogram linkage base 541. The second link 542 may be referred to as a lowered vertical link 542 or drive link 542. The third link 543 may be referred to as the main bent link 543. The fourth link 544 may be referred to as the instrument holder link 544. Links 541-543 may also be referred to as rigid links. Additionally, the term "joint" may be used interchangeably herein with the term "pivot".
In robotic surgical systems for minimally invasive surgery, it is desirable to move and constrain a robotic surgical tool substantially at a single fixed remote center point 666. Typically the fixed remote center point 666 is near the point of insertion of the surgical tool into the patient P. The center of rotation 666 may be aligned with the incision point to the internal surgical site, for example, by a trocar or cannula at an abdominal or thoracic wall during laparoscopic or thorascopic surgery. As the fixed remote center point 666 is on an insertion axis 574 of the surgical tool and the robotic camera and is offset and remote from ground, the embodiments of the robotic surgical arm may also be referred as an offset remote center manipulator instead of robotic surgical arm or surgical manipulator.
The robotic surgical arms 158A- 158 C have a strap and pulley drive train system to control the pivoting of the links about the joints 512-514. The term "strap" may be used interchangeably with the terms "belt" and "band" herein to mean a segment of one or more material layers that are not formed in a continuous loop. If a continuous loop of one or more material layers is to be referenced herein, the phrase "continuous belt" or loop may be used. As the links of the robotic surgical arms 158A- 158 C do not rotate more than three hundred sixty degrees about the joints 512- 514, instead pivoting less than three hundred sixty degrees about the joints 512-514, straps may be used to couple to the pulleys of the drive train system.
Referring now to Figures 6A-6B, a schematic diagram of the strap drive train of a first embodiment of a robotic surgical arm 600 is illustrated. Perspective views of the robotic surgical arm 600 including the strap drive train are illustrated in Figures 6C6-6D. The strap drive train of
Doc. No. ISRG00271 the robotic surgical arm 600 may be used in the structure of the arras 158A-158C illustrated in Figures 1, 2, 5A-5B in one embodiment of the invention. The strap drive train of the robotic surgical arm 600 drives the weight or load of the robotic arm itself from the links, joints, pulleys, cables, straps, etc. and the load that may be placed on it by the surgical tool in the surgical site. Without the strap drive train, the robotic arm would collapse and a remote center point 666 would not be maintained.
While the robotic surgical arm 600 includes links and joints as described herein, the strap drive train of the robotic surgical arm 600 includes six pulleys 604, 608A, 608B, 610, 612A, 612B and four straps 624A, 624B, 626A, 626B in one embodiment of the invention. The six pulleys 604, 608A, 608B, 610, 6Ϊ2A, 612B and four straps 624A, 624B, 626A, 626B are configured with the links and joints or the robotic surgical arm 600 to constrain the motion of the shaft 430 of the surgical tool or endoscopic camera relative to the center of rotation 666.
In the second link 542, straps 624A-624B are coupled between pulleys 604 and 608A. In the third link 543, the straps 626A-626B are coupled between pulleys 608B,610 and ride over the idler pulleys 612A,612B, respectively, in one embodiment of the invention. At the second joint, pulley 604 is rigidly coupled to the first link 541. At the third joint 513 as is illustrated in the Figures 6A- 6B and 7A-7B, pulleys 608A and 608B are concentric but have a separation that allows them to freely rotate independent of each. However at the third joint 513, pulley 608A is rigidly coupled to the third link 543 and pulley 608B is rigidly coupled to the second link 542. At the fourth joint 514, pulley 610 is rigidly coupled to the fourth link 544.
As illustrated better in Figures 6C-6E, the first link may have a hollow solid body to route electrical cabling for power, ground, and control signaling. The second link 542 has a housing that is somewhat "D" shaped to support a plurality of motors in a compact structure. Panels of the housing may be removed to gain access to the motors and the drive straps for assembly and maintenance purposes. As discussed further herein, the third link 543 has a housing shaped like a hockey stick with a bend to support the increased motion of the robotic surgical arm as is further described herein. The housing of the third link also has panels on top and to the sides that may be removed to gain access to the drive straps and the pulleys.
Referring now to Figures 7A-7B, a robotic surgical arm 600' is illustrated as a preferred embodiment of the invention. Figure 7B illustrates a top view of the robotic surgical arm 600' in a fully pitched position to better see the strap drive train. While the robotic surgical arm 600' includes links and joints of the surgical arm 600 as described herein, the strap drive train differs in the third link 543' in that it includes three straps. The differences in the third link 543 and 543' are
Doc. No. ISRG00271 better seen in the illustrations of Figures 9A-9B and 10A- 1OB and understood by the description thereof that is found herein.
The strap drive train of the robotic surgical arm 600' includes five pulleys 604, 608A, 608B, 610, 612' and five straps 624A3 624B, 626A, 627, 628 in one embodiment of the invention. The five pulleys 604, 608A, 608B, 610, 612> and five straps 624A, 624B, 626A, 627,628 are configured with the links and joints of the robotic surgical arm 600' to constrain the motion of the shaft 430 of the surgical tool or endoscopic camera relative to the center of rotation 666. In the second link 542, straps 624A-624B are coupled between pulleys 604 and 608A. In the third link 543', a single idler pulley 612' maybe used. In the third link 543', the strap 626 A is coupled between pulleys 608B, 610 and rides over the idler pulley 612'; the strap 627 is coupled between pulleys 612', 610; and strap 628 is coupled between pulleys 608B, 612', in this embodiment of the invention. At the third joint 513 the separation between pulleys 608 A and 608B allows them to freely rotate about each other even though pulley 608A is rigidly coupled to the third link 543' and pulley 608B is rigidly coupled to the second link 542. As is illustrated in Figures 7A-7B, pulleys 608A-608B are concentric, independently pivoting about the same center axis. At the second joint 512, it can be better seen in Figure 7B that the pulley 604 is rigidly coupled to the first link 541. At the fourth joint 514, pulley 610 is rigidly coupled to the fourth link 544. With the exception of the third link 543' and the straps and pulleys therein, the robotic surgical arm 600' is substantially similar to the robotic surgical arm 600 and its description is incorporated here by reference as the same reference numbers are used,
The straps 624A, 624B, 626A, 626B in the robotic surgical arms 600 and the straps 624A, 624B, 626A, 627,628 in robotic surgical arm 600'may also be referred to as flexible elements and may include straps, belts, chains, or cables connected around the pulleys 604, 608A, 608B, 610, and 612A, 612B or 612'. As described in greater detail with reference to Figures 9B,10B, the straps comprise multiple layers of multiple plies of metal. In one embodiment of the invention, the multiple plies of metal are formed out of stainless steel belts having a breaking strength of approximately 800 lbs or more and being about a quarter inch wide. The belts are preferably multi-layered utilizing at least two or three plies, preferably five or six plies to be strong enough to carry an adequate tension load yet sufficiently thin enough to not fatigue when repeatedly bent around the pulleys.
As the straps 624A, 624B and 626A, 626B or 626A,627,628 are only segments and are offset from each other, they provide stress reduction, particularly at the attachment points, thus minimizing failures. Further, the straps allow for convenient tension and position adjustments as is further
Doc. No. ISRG00271 described below. It will further be appreciated that straps 624A, 624B as well as straps 626A, 626B may each optionally comprise a continuous single belt. Additionally, the metal straps may be loosely coupled to flat flex cables that carry electrical signals along the manipulator arm as further described in U.S. provisional patent application no. 60/752,788. Moreover, while the straps are preferably formed of multiple plies of metal, multi-ply belts of other materials, single-ply belts of other materials, mechanical cables, multiple mechanical cables, timing belts with teeth, or other types of drive straps may be used.
Pulleys 604 and 608A have approximately the same diameter, e.g., 2.2 inches. Smaller pulleys 608B and 610 have approximately the same diameter, e.g., 1,8 inches. In one embodiment of the invention, there are two idler pulleys 612A, 612B at the bend of the main link 543 to facilitate running of straps 626A, 626B in opposite directions so as to allow for attachment of the belts ends to be more robust. In another embodiment there is one idler pulley 612' at the bend of the main link 543' as the straps 626A,627,628 turn the pulley 612' in the same direction even though the midspans of the straps 626AS627,628 may be moving in opposite directions. However, as the three straps 626A,627,628 ride on or wrap around the idler pulley 612', it is wider at the bend than the two idler pulleys 612A,612B. It will be appreciated that the term pulley 604, 608A, 608B, 610, 612A, 612B, 612' can include wheels, gears, sprockets, pulleys with bullnose pins, and the like. Besides straps/belts/bands and pulleys there are other drive train means that may be used in the robotic surgical arm such as a continuous toothed timing belt with a timing gear, mechanical cables (one or more in parallel together) with shouldered pulleys, chains with sprockets, continuous perforated metal tapes around pulleys with bull nose pins, as well as other like drive train,
As discussed previously, the robotic surgical manipulator or robotic surgical arm 600 includes a plurality of links 541-544 coupled together through a series of joints 511-514. The first link 541 also referred to as the parallelogram linkage base 541 supports the instrument holder link 546 through the rigid links 542, 543 coupled together by the rotational pivot joints 512, 513, 514. Using alternate terminology, the links of the robotic surgical arm include an offset yaw link 541, a lowered vertical link 542, and a main bent link 543. The main link 543 is bent at an angle so as to provide clearance for the vertical link 542 to rest on the main bent link 543. This clearance prevents inter-linkage collisions between the vertical link 542 and the main bent link 543. For example, the main link 543 may be bent at an angle of about twenty- two degrees to allow clearance over a pitch dive 872 as shown in Fig. 8C. In such an embodiment, the main bent link 543 and the vertical link 542 as well as the instrument holder 546 are located in the same plane. It
Doc. No. ISRG00271 will be appreciated however that the main link 543 and the vertical link 542 may alternatively be offset in different planes (i.e., placed side by side) to reduce inter-linkage collisions in lieu of bending main link 543. The vertical link 542 pivot 512 is lower relative to the yaw axis 656 so as to provide the offset parallelogram 864 arrangement discussed further below. The yaw link 541 is offset from links 542, 543. That is, the yaw link 541 and links 542, 543 are not in the same plane, but are rather offset side by side so as to reduce the possibility of inter-linkage collisions between link 541 and links 542, 543.
At the center of rotation 666, three axes intersect and may be defined for the robotic arm 600. A yaw axis 656 about which the robotic arm rotates, a pitch axis (which is perpendicular to the page) about which the robotic arm pitches, and an insertion axis 674 along which the shaft 430 is moved intersect with each other at the remote center 666.
The surgical tool 428 can be pivotally rotated though desired yaw angles 658 around the yaw axis 656 and pivotally rotated though desired pitch angles 872 around the pitch axis (see Figures 8A- 8C), while the remote center of rotation 666 remains at a fixed point in space relative to the mounting base 540 and set up arm 156,156'. The links and joints of the entire manipulator 600 are generally moved by the strap drive train to maintain and re-position the remote center 666 while the surgical tool 428 is being pitched and yawed. It will further be appreciated that the surgical tool 428 still has further degrees of freedom supported by the robotic arm 600, including a sliding motion of the surgical tool along the insertion axis 674.
Referring now momentarily to Figures 8A-8C, for the robotic surgical arm 600 to move the shaft 430 of the robotic surgical tool 428 about the single fixed remote center point 666 during minimally invasive robotic surgery > an offset remote center parallelogram manipulator linkage assembly (links 541-544 and joints 511-514) is provided. In conjunction with the strap drive train, the offset remote center parallelogram manipulator linkage assembly (links 541-544 and joints 511-514) defines a parallelogram 864 (illustrated in Figure 8A-8C) so as to constrain the elongated shaft 430 of the instrument 428 relative to the center of rotation 666 when the instrument 428 is mounted to the instrument holder 546 and the shaft 430 is moved along a plane of the parallelogram 864.
A top long side 868A of the parallelogram 864 is defined as the distance between axes of rotation at joints 513 and 514 generally defined by the third link 543. A left short side 867A of the parallelogram is defined as the distance between axes of rotation at joints 512 and 513 generally defined by the second link 542. The strap drive train is assembled in the robotic arm with the
Doc. No. ISRG00271 pulleys in proper positions in order to define the bottom long side 868B and the right short side 867B of the parallelogram.
Note that the yaw axis 656 and the parallelogram 864 intersect the insertion axis 674 of the shaft 430 at the remote center of rotation 666. Also note that the parallelogram 864 is angularly offset from the yaw axis 656 by an angle Alpha. That is, the robotic arm 600 offsets or decouples the first joint 512 and the first side 868B of the parallelogram 864 from the yaw axis 656 by the angle Alpha. The angle Alpha may be in a range from about two degrees to about forty five degrees and preferably falls in a range from about two degrees to about thirty five degrees. This offset enhances the range of motion in the instrument 428 about the remote center point 666 relative to the pitch axis, as indicated by arrow 872. The manipulator 600 further allows for an enhanced range of motion relative to the yaw axis 656, as indicated by arrow 658. An improved pivot range of motion along pitch and yaw axes in turn enhances the efficiency and ease of use of the robotic surgical arm in a robotic surgical system.
As Figures 8A-8C illustrate, when the robotic surgical arm 600 is pitched, the first link 541 and the third link 543 are kept from rotating relative to each other by the straps 624A, 624B coupled between the two pulleys 604, 608 A and by the pulley 604 being rigidly fixed to the first link 541 and pulley 608A being rigidly fixed to the third link 543. That is, the third link 543 can be translated by the second link 542, but the angular orientation of third link 543 with respect to first link 541 is substantially the same.
The second link 542 and the fourth link 544 are likewise kept from rotating relative to each other. In one embodiment of the invention, this is accomplished by the straps 626A, 626B coupled between pulleys 608B and 610 and running over the idler pulleys 612A, 612B; and by pulley 608B being rigidly fixed to the second link 542 and by the pulley 610 being rigidly fixed to the fourth link 544. In another embodiment of the invention, this is accomplished by the strap 626A coupled between pulleys 608B and 610 running over the idler pulley 612'; and strap 628 coupled between pulleys 608B, 612' and strap 627 coupled between pulleys 612',610; with pulley 608B being rigidly fixed to the second link 542 and pulley 610 being rigidly fixed to the fourth link 544. Hence, links 541 and 543 can translate but not rotate relative to each other to maintain the parallelogram shape 864. Likewise, links 542 and 544 can translate but not rotate relative to each other to maintain the parallelogram shape 864.
The mounting base 540 includes a motor 601 illustrated in Figure 6A to yaw the robotic arm 600 about the axis 656 as illustrated by the arrow 658 in Figures 6A, 6B, and Figures 8A-8C. The
Doc. No. ISRG00271 mount ng ase 5 nc u es e ectr ca an mec an ca connectors to mate w t e ectr ca an mechanical connectors 650 in a base support coupled to the set up arm 156,156'. Additionally, fasteners 662 (such as bolts) may be used to rigidly couple the robotic surgical arm 600 to the set up arm 156,156'. Alternatively, a lever arm maybe used to lock and unlock the arm 600 from the arms 156,156' to quickly mount and dismount the robotic surgical arm from the patient side system.
The second link 542 includes a motor 602 coupled to the pulley 604 to pitch the robotic arm 600 as illustrated in Figures 8A-8C. The motor may couple to the pulley through spur gears and a harmonic drive. The motor 602 in the second link 542 pivots the second link at the shaft and axis of the pulley 604 at the second joint 512 that in conjunction with the other elements, causes the robotic arm 600 to pitch. The motor 602 actively moves the linkage of the arm 600 in response to commands from a computer processor 151 generated by the control input 160 at the console 150. Additional motors (shown in Figure 6E) are mounted in the links of the robotic arm 600 to articulate a wrist 431 at the distal end of the tool 428 about at least one, and often two, degrees of freedom. An addition motor (shown in Figure 6E) can be used to actuate an articulatable end effector 438 of the tool 428 for grasping tissues in the jaws of a forceps or the like. Control cables may be used to couple the motors to the controllable features of the tool 428, as more fully described in U.S. Patent No. 5,792,135, the full disclosure of which is incorporated herein by reference.
At least one of the rigid links 541, 542, 543 coupled together by rotational pivot joints 512, 513, 514 are not completely balanced, relative to gravity, in at least one degree of freedom. As such, a brake system may be coupled to the articulate linkage assembly 600. The brake system releasably inhibits articulation of at least one of the joints 512, 513, 514. It will be appreciated that the offset remote center manipulator 600 may comprise a lighter system as the linkage is free of any counterbalancing weights. As such, the links 541, 542, 543 will preferably comprise sufficiently rigid and stiff structures so as to support any vibration issues associated with a lighter surgical manipulator 600. It will further be appreciated that the offset remote center manipulator 600 may optionally be balanced by the use of weights, tension springs, gas springs, torsion springs, compression springs, air or hydraulic cylinders, torque motors, or combinations thereof.
MULTI-PLY STRAPS
Doc. No. ISRG00271 The straps in each link, drive the pitch axis of the robotic surgical arm. The first set of straps 624A-624B in the second link 542 are used to connect pulley 604 to pulley 608A in a 1 :1 ratio (i.e., pulleys are of the same diameter). As discussed previously, joint pulley 604 is rigidly connected to the first link (Link 1) 541 and joint pulley 608A is rigidly connect to the third link (Link 3) 543. Thus, one unit of rotation of the second link (Link 2) about the second joint 512 in one direction (e.g., clockwise) causes one unit of rotation of the third link (Link 3) about the third joint 513 in an opposite direction (e.g., counter clockwise). Thus, the first set of straps ensures that the third link 543 maintains the same angle relative to the first link 541, as the robotic surgical arm's pitch axis is moved.
The second set of straps in the third link 543 are used to connect joint pulley 608B to joint pulley 610 in a 1 :1 ratio. Joint pulleys 608 A and 608B are free to rotate about each other at the third joint 513. As discussed previously, pulley 608B is rigidly connected to the second link (Link 2) 542 and pulley 610 is rigidly connected to the fourth link (Link 4) 544. One unit of rotation of the second link (Link 2) about the second joint 512 causes one unit of rotation of the fourth link (Link 4) about the fourth joint 514. Thus, the first and second set of straps ensures that the fourth link (Link 4) 544 maintains the same angle relative to the second link (Link 2) 542, as the robotic surgical arm's pitch axis is moved.
To provide a strap drive system linking pulleys at the joints of the bent third link 543 (the hockey stick shaped link), a pair of idler pulleys are provided near the bend in the link in one embodiment of the invention. The pair of idler pulleys direct one or more of the straps of the strap drive system in the link housing from one end to the other through the bend of the link. Thus, one or more of the straps may bend around the idler pulleys of the third link 543 to facilitate the hockey-stick shape and provide the proper kinematics and range of motion for the robotic surgical arm. As discussed previously, a two-strap drive system is used for connecting pulleys in the third link 543 in one embodiment of the invention. Alternatively, a three-strap drive system is used for connecting pulleys in the third link 543 in another embodiment of the invention.
Referring now to Figure 9 A, a perspective view of a two-strap drive system 900 used in a third link is illustrated. The system 900 includes the two straps 626A-626B, the joint pulleys 608B5 610, and the idler pulleys 612A-612B for each respective strap 626A-626B. Each of the straps partially wraps around each pulley side-by-side over a wrap angle with the ends of the straps being rigidly coupled to the joint pulleys 608B,610 so that no backlash occurs. The two straps 626A-626B are partially wrapped around the joint pulleys so as to move in opposite directions when the links are moved. That is, the ends of strap 626A are wrapped around each joint pulley in an opposite
Doc. No. ISRG0027Ϊ direction than how the ends of strap 626B are wrapped. Even though the two straps 626A-626B are routed side by side in the link housing, effectively they act as one continuous loop between the joint pulleys. However, the straps may be used as the pulleys pivot less than three hundred sixty degrees.
Because the third link (Link 3) 543 has a bend in it (e.g., the third link may be referred to being hockey-stick shaped), each strap 626A-626B wraps around it's own respective idler pulley 612A- 612B, because the belts rotate in opposite directions about them. The idler pulleys 612A, 612B allow the straps 626 A, 626B to navigate around the bend in the third link 543. In one embodiment of the invention, the idler pulleys are also used to tension the straps as discussed further below. Otherwise, the idler pulleys are passive idlers.
The system 900 may be advantageous for single-ply straps or cables, as it requires only two straps. However in a number of embodiments of the invention, the straps are formed of a plurality of layers or plies of material. In a preferred embodiment of the invention, each of the straps includes a plurality of metal layers or plies. The plurality of layers or plies provides a safety redundancy over that of a single cable or single ply strap or belt. If any single ply breaks in a multi-ply strap due to a manufacturing defect, fatigue, or overload for example, the remaining plies prevent the robotic surgical arm from collapsing.
Referring now to Figure 9B, a cut-away side view of strap 626A is illustrated. Strap 626A includes a plurality of metal layers or plies 902A-902N each having the same width and thickness. The plurality of metal layers or plies 902A-902N are stacked one on top of the other and may jointly be referred by reference number 901 A. In one embodiment of the invention, each metal layer 902A-902B is steel. Alternatively, other types of metal, alloy, or other materials can be used. There is no adhesive between the metal layers so they are allowed to freely move over each other at midspan and over the idler pulley. This helps to reduce the stress in the layers of the belt while the plurality of layers provides a high stiffness and strength. Instead, the multiple metal layers or plies 901 A are only joined together at their ends such as by a tab 912 as illustrated in Figure 9D. The layers may be joined to the tab 912 by welding in one embodiment of the invention. Other devices may be used to join one or both ends of the multiple metal layers or plies together, such as a hooked tab or tensioning block, as is described further below.
In the two belt system, strap 626B is reverse bent over the idler pulley in comparison with how it wraps around the joint pulleys. That is, one side of the strap wraps around the joint pulleys while the opposite side wraps around the idler pulley. This can cause increased fatigue in the strap 626B unless alleviated by its design.
Doc. No. ISRG00271 Referring now to Figure 9C, a cut-away side view of strap 626B is illustrated. Strap 626B includes a plurality material layers 901B. The plurality of material layers 901B includes metal layers 902A-902B sandwiching a layer 904 of antifriction material such as a layer of Teflon, carbon, grease, oil or other type of dry or wet lubricant. The antifriction material layer 904 allows the metal layers 902A-902B to more freely slide against each other as the strap is reverse bent over the idler pulley. Additional pairs of antifriction material layer 904 and metal layers 902 may be stacked on top of the prior metal layer to provide additional strength for the strap. The metal layers or plies 902A-902B each have the same width and thickness. Similar to strap 626A, the material layers 901B are only joined together at the ends of the strap a tab 912 as illustrated in Figure 9D. The metal layers may be joined to the tab 912 by laser welding in one embodiment of the invention.
The multi-ply metal straps are an enabling technology for the robotic surgical arm due to their high stiffness and strength, zero backlash, low hysteresis, low friction, compact packaging, and redundant construction for safety. Their ability to bend around idler pulleys in third link (Link 3) 543 also enables the hockey-stick shape for proper kinematics and range of motion. In a preferred embodiment of the invention, three straps are used in the third link to couple between the joint pulleys to avoid use of an antifriction layer between plies of the strap 626B. Referring now to Figure 1OA, a perspective view of a three-strap drive system 1000 used in a third link is illustrated. The system 1000 includes the three straps 626A,627-628; joint pulleys 608B, 610; and idler pulley 612' . Alternatively, two idler pulleys could be used; one for strap 626 A, and another for straps 627, 628. In the preferred embodiment, each of the straps partially wraps around each pulley side-by- side over a wrap angle with first ends of straps 627-628 and two ends of strap 626A being rigidly coupled to the respective joint pulleys 608B, 610 and second ends coupled to the idler pulley 612' so that no backlash occurs. The straps 626 A, 628 are partially wrapped around the joint pulley 608B so they will also move in opposite directions when the links are moved. The straps 626A, 627 are partially wrapped around the joint pulley 610 so they will also move in opposite directions when the links are moved. That is, the ends of strap 626A,628 are wrapped around joint pulley 608B in opposite directions and the ends of straps 626A,627 are wrapped around joint pulley 610 in opposite directions. However, while the ends of straps 627,628 are wrapped around idler pulley 612' in opposite directions, they move in the same direction (e.g., from left to right or right to left) as the links are moved. Even though the three straps are routed side by side in the link housing, effectively they act as one continuous loop
Doc. No. ISRG00271 between the joint pulleys. Straps may be used instead of a continuous belt as the pulleys pivot less than three hundred sixty degrees.
The idler pulley 612' is used in the system 1000 to negotiate the bend in the third link (Link 3) 543 (i.e.- hockey-stick shaped link). In one embodiment of the invention, one end of the straps may be used to generate tension in each strap between the pulleys. In another embodiment of the invention, the idler pulley 612' may be used to tension the straps. In this case, the idler pulley 612' is a passive idler.
Referring now to Figure 1OB, a cut-away side view of straps 626A,627-628 is illustrated. Without the reverse bend in the three strap system, the antifriction layer can be avoided between the layers of metal. Thus, each strap may be formed of the same layers including a plurality of metal layers or plies 902A-902N each having the same width and thickness. The plurality of metal layers or plies 902A-902N are stacked one on top of the other and may jointly be referred by reference number 901 A. In one embodiment of the invention, each metal layer 902A-902B is steel Alternatively, other types of metal, alloy, or other materials can be used. There is no adhesive between the metal layers so they are allowed to freely move over each other at midspan over the idler pulley. This helps to reduce the stress in the layers of the belt while the plurality of layers provides a high stiffness and strength. Instead, the multiple metal layers or plies 901 A are only joined together at their ends by a tab 912 as illustrated in Figure 9D. The layers may be joined to the tab 912 by welding in one embodiment of the invention.
As alluded to previously, the three strap system 1000 has some advantages. For any strap or cable (single ply or multi ply), the three-strap configuration eliminates reverse bending, to avoid fatigue caused by alternating stresses. In the case of multiple plies or layers, the three strap system eliminates pinching and stretching of plies at the idler pulley due to reverse bending, further allowing the anti-friction layer to be avoided in the formation of the straps. Another advantage of the three strap system is that a single idler pulley may be used, since all straps are being rotated in the same direction at the idler pulley 612'. Moreover, a single idler pulley may be used to tension all three straps in the system 1000.
Additionally, multi-layer or multi-ply metal straps in the drive train of the robotic surgical arm has a number of advantages over using metal mechanical cables. The multi-ply straps are more reliable, have a greater stiffness, have an excellent ability to maintain tension, and have superior strength than cables. Moreover, using conductive metal or alloy materials for the plies or layers of the metal straps assists in grounding the robotic surgical arm since they are electrically conductive.
Doc. No. ISRG00271 STRAP END TABS
Referring now to Figure 1 IA, the straps of the robotic surgical arm maybe coupled to the pulleys without use of a fastener, such as a bolt or rivet. Instead, a hooking system 1100 is used to couple one or both ends of the straps to the pulleys 1101. A tensioning system 1300,1400 may be used to couple the opposite end of the straps to the opposite pulleys 1301,1401. Use of the hooking system is advantageous in that it makes it faster and easier to replace and assemble the straps in the robotic surgical arm. Furthermore, without using fasteners, a possible failure mode is eliminated such that the hooking system is safer. Additionally, the hooking system can provide further safety by avoiding being unhooked in the event of slacking of the strap.
Referring now to Figures 1 IB-I ID, the strap hooking system 1100 is now described. The strap hooking system 1 100 includes a pulley 1101 having a pocket 1102 and a strap 1110 with an end tab 1112 coupled at an end.
To receive the end of the strap 1110, the pulley 1101 further includes a recess 1103 in its circumference that is at least as wide as the strap 1110. The recess 1103 becomes progressively deeper until it joins with the pocket 1102. The recess ends at the lip 1105.
The tab 1112 is a rectangularly shaped geometric solid (e.g., rectangular prism) in one embodiment of the invention including a front side, a back side, and left and right sides formed by a thickness of the tab. The tab 1112 further includes a bottom surface and an opposing top surface to couple to a bottom surface of the strap 1110. The width of the tab may be substantially similar to the width of the strap.
In a preferred embodiment of the invention, the strap 1110 is a metal strap having one or more layers or plies as discussed previously with reference to Figures 9B and 1OB. hi which case, the tab 1102 is preferably a metal tab and the strap 1110 may be coupled to the tab 1102 by welding as illustrated by the welds 1114. hi other embodiments of the invention, the strap and tab may be coupled together by other means.
The pocket in the pulley is shaped to receive the tab 1112. The pocket 1102 includes a lip 1105 at the back of the pocket to retain the tab therein. The strap is sufficiently stiff enough to behave as a beam, which is relaxed when it is straight. When the strap is deformed around the circumference of the pulley and the tab 1112 is inserted into the pocket, the lip 1105 exerts a force on the tab to retain it in the pocket. In the strap's deformed state, it wants to straighten and exerts a load on the tab that attempts to rotate the tab clockwise with reference to the view of Figure 11C. These loads on the tab keep it locked in place, so that it cannot be readily unhooked, even when the strap is
Doc. No. ISRG00271 slackened. Referring momentarily to Figure 6A, if a sufficiently high force is applied along the insertion axis 674 in a downward direction, strap 624A inside the second link (Link 2) 542 will stretch and strap 624B will slacken. In this case, removal of the tab 1112 from the pocket is avoided so that the robotic surgical arm does not completely collapse and wildly move a surgical tool and injure a patient. Referring back to Figures 1 IB-I ID, he pocket further includes a stop 1106 at the front of the pocket 1102 to couple to a front side of the tab 1112. The stop 1106 is where significant forces from the strap on the tab 1112 meet the pulley. The pocket 1102 further includes a side restraining protrusion 1107 extending from the stop 1106 to retain the tab therein against side forces that may be placed on the strap 1110.
The tab 1112 and strap 1110 hook into and unhook from the pocket 1102 around the circumference of the pulley 1 101, in contrast to being slid out through a side of the pulley. This allows easier replacement of the belts where sides of the pulley are constrained to a limited area. With the tab 1112 in the pocket 1122 and the strap under tension, there is a first gap 1121 between an edge of the lip 1105 and the end of the strap 1110 and a second gap 1123 between a back stop of the pocket 1102 and the tab 1112 as illustrated best by Figure 1 ID. The first and second gaps 1121,1123 allow a maintenance person to hook and unhook the strap to the pulley. To unhook the strap from the pulley, the maintenance person first slackens the strap and slides it and the tab backward away from the stop 1106, and tilts the back side of the tab downward in lhe pocket, as illustrated in Figure 11C by lifting the strap upward at a point away from the end, such as strap portion 1125 shown in Figure 11C, To assemble the strap to the pulley, the back side of the tab is inserted into the recess and down into the pocket. The tab and strap are pushed forward toward the back stop of the pocket. Then a person pushes down on the strap at a point away from the end, such as strap portion 1125, to flex the end of the strap and front side of the tab down into the pocket so that the lip 1105 is engaged by the back side of the tab.
STRAP WRAP ANGLE AROUND PULLEYS
As illustrated in Figure 1 IA, the straps are wrapped around the pulleys at a strap wrap angle 1150 from a point of tangency 1152 making first pulley contact to a point 1 153 normal to the strap end at the tab as shown. Because the straps are wrapped around the pulleys at the wrap angle 1150, the amount of load seen by the ends of the straps is less than the load seen at the straight portion of the straps between pulleys (e.g., midspan). The reduced load seen at the ends of the straps is due to the friction between the straps and pulleys over the wrap angle 1150. Thus, the wrap angle 1150
Doc. No. ISRG00271 may be increased to reduce the load seen at joint between the tab and strap, which is typically the weakest segment of the strap.
As discussed previously, the straps 1110 in the robotic surgical arm are metal straps having one or more layers or plies in a preferred embodiment of the invention and may be coupled to the tab 1102 by welding as illustrated by the welds 1114. The welds 1114 form a heat-affected zone that locally reduce the strap's material strength. That is, the "heat affected zone" surrounding the welds is weaker than the as-rolled condition of the portion of the straps sufficiently away from the welds,
A reliable and safe design for the straps calls for a breaking load at the straight portion of the strap between pulleys (e.g., midspan) to be less than or equal to the breaking load at the end tabs. Because the strength of the welds 1114 have more variation at the ends of the strap than at the midspan of the strap, a sensible design to consider for the wrap angle of the straps is one where the straps nearly always break not at the welds 1114 but well away from the welds (at midspan, for example). In the embodiments of the invention, the wrap angle was increased to sufficiently meet this criteria in a majority of the cases.
Testing on sample lots of straps wrapped around pulleys at each end with a worst case wrap angle indicates that a vast majority of ultimate failures occur not at but away from the welds 1114 so as to have a safe and reliable design. Theoretical calculations have also been made and show that a minimum wrap angle (worst case) of one hundred six degrees (1.85 radians) is sufficient for five or six ply metal belts with welded tabs/blocks to withstand 2025 pounds of force in the straight portion between pulleys.
STRAP TENSIONERS
In one embodiment of the invention, an idler pulley is pivotally coupled to a swing arm tensioner to automatically set and maintain the correct tension in the straps. In another embodiment of the invention, a strap tensioner is part of a pin, tab, or block coupling the strap to a pulley and includes a manually adjustable screw.
Referring now to Figure 12A9 a schematic side view 1200 of the robotic surgical arm 600 is illustrated including swing arm tensioners 1201, 1203. The swing arm tensioner 1201 may be used to tension the straps 626A-62όb in the third link 543. In the third link 543, the idler pulleys 612 A- 612B are pivotally coupled to the swing arm tensioner 1201. The idler pulleys 612A-612B can pivot about the pulley axis independent of each other. The swing tensioner 1203 maybe used to
Doc. No. ISRG00271 tension both straps 624A-624B in the second link 542. In the second link 542, an idler pulley 612C is pivotally coupled to the swing arm tensioner 1203. The swing arm tensioners can automatically adjust the tension in the straps. Thus, the swing arm tensioners may also be referred to as auto-tensioners, self-adjusting tensioners, or idler-pulley swing arm tensioners.
Referring now to Figures 12B-12C, magnified side and perspective views of the tensioner 1201 in the third link are illustrated. The swing arm tensioner 1201 may include a mounting base 1210, apivotable shaft 1211 pivotably coupled to the mounting base, an arm 1212 having a proximal end pivotally coupled to the shaft, a torsional spring 1215 coupled at one end to the base 1210 and an opposite end to the arm 1212, a pulley shaft 1214 coupled near a distal end of the arms, and one or more idler pulleys 612A-612B, 612' pivotally coupled to the pulley shaft. In the case of the two strap system in the third link, the two idler pulleys 612A-612B are used so the straps 626A-626B may move in opposite directions. In the case of the three-strap system in the third link, a single idler pulley sufficiently wide enough to accommodate three straps in parallel may be used as the straps 626A,627,628 are wrapped or unwrapped by the pulley rotating in the same direction.
The base 1210 of the tensioner couples to the housing or frame of the link for support in order to apply a force against the one or more straps.
The swing-arm tensioner automatically sets and maintains correct tension in bands when assembly is completed. The tension T in the straps is set by torsional spring 1215 and provides for automatic adjustment of the tension in the straps. The torsional spring 1215 is selected with a spring constant to set the desired tension in the straps at a given idler pulley or pulleys. With the tension being automatically set by the torsional spring, there is no need for tension calibration by a service person and thus no risk of an incorrect tension adjustment. Alternatively, a tension spring, compression spring, leaf spring, or other means of applying a force could be used in place of the torsional spring 1215.
However in one embodiment of the invention, the arm of the tensioner may be locked in place by a fastener, such as a screw 1231, so that the torsional spring does not adjust tension during normal operation. The screw 1231 would pass through a slot 1230 in arm 1212, and screw into a threaded hole in third link 543, thus locking the arm. Instead, the tension on the straps may be periodically recalibrated in the field. The fastener can lock the position of the arm 1212 relative to the base 1210 after the strap system is assembled together. To recalibrate the tension on the straps in the field, the fastener is simply removed or loosened to free the arms to swing and allow the spring to adjust the tension and then replaced or retightened. In the case of a screw, it may be
Doc. No. ISRG00271 unscrewed to release and then screwed in to retighten after automatic adjustment of the tension by the torsional spring. The advantage of locking the tensioner in place is that the compliance of the tensioner spring 1215 then does not affect the stiffness of the strap drivetrain. A stiffer drivetrain results in improved performance, due to less vibration of the robot.
In an alternative embodiment of the invention, an electrically engagable brake 1250 that locks the pivotal axis through the pivotable shaft 1211 so that the torsional spring does not adjust tension during normal operation. The brake 1250 may be periodically unlocked by computer 151, to allow the tension in the strap to be automatically reset. The brake 1250 is locked during surgery. The electrically engagable brake 1250 may reduce maintenance costs in that a maintenance person would not be required to periodically release a fastener to adjust tension as it is automatically performed by the computer 151. In other embodiments of the invention, the brake 1250 is not an electrically engagable brake but a brake that is pneumatically, hydraulically, or engaged by other means.
In the example geometry above, the reaction force "R" that acts between the pulley and the straps is congruent to two and one half times the tension "T" on the straps. Changes in geometry will alter the amount of reaction force and/or tension. However because both straps 626A,626B are automatically tensioned on the parallel idler pulleys 612Af612B, "slack" that develops in the straps and system will be taken up approximately by both straps being self-adjusted for tension by the tensioner 1201. Thus, the tensioner 1201 minimizes the rotation of the pulleys at the ends of the link as slack develops. Minimizing the rotation of pulleys in response to slackening minimizes error in the position of the remote center of motion (RCM) 666 in comparison with one idler pulley tensioner being used to tension a single strap in the link.
The swing arm tensioners may further include one or more swing arm sensors to quickly detect if a strap slackens indicating fatigue or if the strap fails or breaks. In this manner, the swing arm sensors provide a safety mechanism to protect a patient from harm. Sensor 1232 is a through- beam sensor, and it's beam would be broken if arm 1212 moved to block it's line-of-sight. Alternatively, other types of sensors to detect position of arm 1212 could be used.
Referring now to Figures 13A-13D and 14, embodiments of a strap tensioner including a tensioning block coupling the strap to a pulley are now described. Previously with reference to Figures 1 IA-I ID, a strap hooking system 1100 was described with elements for strapping an end of a strap to a pulley 1101. The strap hooking system 1100 has elements somewhat similar to the embodiments of the strap tensioning systems 1300 and 1400 now described.
Doc. No. ISRG00271 In the preferred embodiment of the invention, Figures 13A-13D illustrate the strap tensioning system 1300 that generally includes a pulley 1301 having a pocket 1302 and a strap 1310 with a tensioning block 1312 coupled at an end of the strap. But for a continuous belt, links of the robotic surgical arm having at least one strap may include at least one tensioning block 1312 to couple to a pulley 1301.
The pocket 1302 in the pulley 1301 is shaped to receive the tensioning block 1312. The tensioning block 1312 hooks into the pocket 1302. The pocket 1302 includes a lip 1305 at a back thereof to retain the tensioning block 1312 therein against longitudinal forces (i.e., the tension) placed on the strap. Additionally when no tension is being applied, a spring force in the metal strap 1310 keeps the block 1312 locked in place within the pocket so that it cannot be readily unhooked. In the event that a strap is slackened, removal of the block 1312 from the pocket is avoided so that the robotic surgical arm does not completely collapse and wildly move a surgical tool and injure a patient. The pocket further includes a stop 1306 at the front of the pocket 1302. The pocket 1302 further includes a side restraining protrusion 1307 extending from the stop 1306 to retain the front portion of the block therein against side forces that may be placed on the strap 1310.
To tension the strap 1310, the strap tensioning system 1300 further includes a fastener 1331. The fastener 1331 has significant forces applied to it from tensioning and coupling the strap to the pulley. The fastener 1331, such as a screw or bolt, has male threads 1332 at one end and a head 1333 at an opposite end with a tool receiver. The tool receiver in the head receives a tool to rotate the fastener. The tool receiver may be a slot, a hex socket, a cross, other type of indentation in the head, or the shape of the head itself, such as a hex head.
The tensioning block 1312 has a cylindrical opening 1335 with female threads 1336 to receive the fastener 1331 and mate with its male threads 1332. In one embodiment of the invention, the female threads 1336 may include a screw-lock heli-coil to keep the fastener from rotating and changing the tension. The tensioning block has a limited distance to travel when being tensioned before its back side hits the front stop 1322. This distance between the block 1312 and the front stop 1322 is referred to as the tension travel distance DTT 1321.
The tensioning block 1312 generally includes a rectangularly shaped geometric solid (e.g., rectangular prism) portion at a front end and a cube shaped portion with the threaded opening 1335 at a back end, in one embodiment of the invention. The rectangularly shaped solid portion of the block 1312 further includes a bottom surface and an opposing top surface to couple to a bottom
Doc. No. ISRG00271 surface of the strap 1310. The width of the block maybe substantially similar to the width of the strap.
In a preferred embodiment of the invention, the strap 1310 is a metal strap having one or more layers or plies as discussed previously with reference to Figures 9B and 1OB. The tensioning block 1302 is also preferably formed of metal so that the strap 1310 may be welded thereto by welding as illustrated by the welds 1314. In other embodiments of the invention, the strap and tensioning block may be coupled together by other means.
To receive the end of the strap 1310, the pulley 1301 includes a recess 1303 in its circumference that is at least as wide as the strap 1310. The recess 1303 becomes progressively deeper until it joins with the pocket 1302. The recess ends at the Hp 1305 of the pulley 1301.
In addition to the recess 1303 and pocket 1302, the pulley 1301 has a cutout 1342 to receive the fastener 1331 and allow its head 1333 to rotate therein. In one embodiment of the invention, a clearance between the head 1333 and sides of the cutout 1342 are sufficient to attach a tool, such as a socket, to the head 1333 of the fastener 1331 so that it may be turned. The pulley
1301 further has a cylindrical opening 1340, that is slightly larger in diameter than the fastener 1331, that extends from the cutout 1342 into pocket 1302 to allow the fastener 1331 to pass into the pocket and mate with the threaded opening 1335 in the block 1312.
Without the fastener 1331, the tensioning block 1312 and strap 1310 hook into and unhook from the pocket 1302 through the recess 1303 in the circumference of the pulley 1301, as illustrated by Figure 13C. This is in contrast to being slid out through a side of the pulley. The recess in the circumference of the pulley allows easier replacement of the belts where sides of the pulley are constrained to a limited area. With the tensioning block 1312 hooked into the pocket
1302 as is illustrated by Figure 13D, the fastener 1331 may be inserted into the cutout 1342 and opening 1340 to mate with the threaded opening 1335 of the tensioning block 1312. To release the strap from the pulley, the fastener 1331 is first unscrewed from the block 1312. The tensioning block can then be unhooked from the pocket 1302.
With the block 1312 in the pocket 1302 and the strap under tension, there is a gap between a back stop 1306 of the pocket 1302 and the block 1312, as illustrated in Figure 13B. This gap and the tension travel distance 1321 allow a maintenance person to hook and unhook the strap to the pulley 1301. The tensioning block 1312 and strap 1310 hooks into and unhooks from the pocket 1302 similar to how the tab 1112 and strap 1110 hook and unhooks from the pocket 1102 described previously.
Doc. No. ISRG00271 To change the tension on the strap 1310, the fastener may be manually turned by a hand tool, such as by a screw driver, socket wrench, or nut driver; or an automated tool, such as a speed driving drill with a torque clutch. To increase the tension on the strap 1310, the fastener 1331 is tightened by turning clockwise for standard threads and counter clockwise for reverse threads. This pulls on the tensioning block 1312 in the pocket to increase the tension on the strap. To decrease the tension on the strap 1310, the fastener 1331 loosened by turning counter clockwise for standard threads and clockwise for reverse threads. This pushes on the tensioning block 1312 in the pocket to release the tension in the strap. The tension is set using a sonic tension meter, which measures the transverse frequency of vibration of the straps, when strummed. The screw 1331 is adjusted until the frequency that corresponds to the desired tension is achieved. This is substantially similar to using a sonic frequency guitar tuner to set the desired tension of guitar strings.
Referring now to Figure 14, a strap tensioning system 1400 is illustrated that generally includes a pulley 1401 having a pocket 1402 to receive a tensioning block 1412 with a first hook 1451, and a strap 1410 with a hooked tab 1450 with a second hook 1452 coupled at an end of the strap. The strap tensioning system 1400 is somewhat similar to the strap tensioning system 1300 in operation but has a few more elements. Those elements that are identical use the same reference number and their description is incorporated here by reference. Moreover, one or more of the different elements of strap tensioning system 1400 may be incorporated into the strap tensioning system 1300, such as the heli-coil screw lock or the set screw.
In Figure 14, the pocket 1402 in the pulley 1401 is shaped to receive the tensioning block 1412 and the hook 1452 coupled to the strap 1410. The pocket 1402 includes a lip 1405 extending from aback side to retain the block 1412 therein against longitudinal forces (i.e., the tension) placed on the strap. The pulley 1401 further has an opening 1340 and a cutout 1342 to receive the tensioning fastener 1431 as is illustrated in Figure 14.
As the tension on the strap 1410 may be insufficient to keep the tensioning fastener 1431 from backing out on its own and reducing the tension, the system 1400 may include a locking fastener coupled to the tensioning fastener 1431. In this case to receive the locking fastener, the pulley 1401 includes an opening 1454A starting at its circumference or an opening 1454B starting from a side down to the opening 1340. In either case, the opening 1454A,1454B is threaded to receive a locking fastener 1456, such as a puck or set screw. A distal end of the fastener 1456 couples against the tensioning fastener 1431 to lock it and keep it from rotating and altering the
Doc. No. ISRG00271 tension in the strap 1410. The locking fastener 1456 may be formed of brass, such as a brass tip set screw or a brass puck.
The hook 1451 of the tensioning block 1412 mates with the hook 1452 of the end tab 1450. The end tab 1450 is preferably welded to the strap 1410. With the strap under tension, the end tab 1450 is captured within the pocket 1402. Additionally, as was previously discussed in greater detail, without any tension a spring force in the metal strap 1410 may keep the hooks 1451-1452 mated together within the pocket so that they cannot be readily unhooked from each other. In the event that the tensioning fastener fails due to overloading of the arm and the strap is completely slackened, the hooks 1451-1452 may remain mated together so that the robotic surgical arm does not completely collapse and wildly move a surgical tool and injure a patient. The pocket further includes a stop 1406 at the front of the pocket 1402.
As previously mentioned, the strap tensioning system 1400 includes the tensioning fastener 1431 to tension the strap 1410. The tensioning fastener 1431, such as a screw or bolt, has male threads 1432 at one end and a head 1433 at an opposite end with a tool receiver. The tool receiver in the head receives a tool to rotate the fastener. The tool receiver may be a slot, a hex socket, a cross, other type of indentation in the head, or the shape of the head itself, such as a hex head. The tensioning fastener 1431 has significant forces applied to it from tensioning and coupling the strap to the pulley. The first fastener, the tensioning fastener 1431, may be a silver plated fastener, such as a silver plated screw, to minimize galling that might otherwise be caused by dissimilar metals.
To keep the tensioning fastener 1431 from rotating and tension changing, use of the locking fastener 1456, such as a set screw, was described previously. In the preferred embodiment of the invention, the tensioning block 1412 and 1312 includes a screw-lock heli-coil 1446 in the opening 1335 with its threads 1336 to receive the tensioning faster 1431,1331. The screw-lock heli-coil 1446 includes a couple of straight segments to squeeze on the screw and hold it in position. This increases the torque required to rotate the faster 1431,1331 and screw it in or out of the opening 1335 in the block 1412,1312. This increased torque prohibits the tensioning fastener 1431,1331 from rotating on its own and changing the tension in the strap.
A washer 1458 may be inserted on the tensioning fastener 1431. The washer may be a star washer or a lock washer to further hold the position of the tensioning fastener 1431 when set.
FAILSAFE STRAP TENSIONING
Doc. No. ISRG00271 The tensioning systems 1300 and 1400 each have a failsafe mechanism in case of failure of the fastener 1331, 1441. That is, if the tensioning fastener 1331,1431 breaks, the strap will not become free from the pulley 1301. The tensioner blocks 1312, 142 are captive in their respective pockets 1302,1402 in which they reside by a moment generated by the metal strap which was discussed previously with respect to the tab 1112. If the tensioning fastener 1331,1431 breaks free from the blocks, the block and strap will only move a small distance to the back stop 1306,1406 in the pocket, such as the fail distance 1352 illustrated in Figure 13D. The blocks 1312,1412 will not unhook out of their respective pockets 1302,1402 on their own. This allows for the end of the strap 1310 to be directly welded to the tensioning block 1312 as indicated by the welds 1314 in the system 1300,
REMOTE CENTER ADJUSTMENT WITH STRAP TENSIONERS
Referring momentarily to Figure 18C, in order for the robotic surgical arm to have proper kinematics, the position of the remote center 666 is adjusted to achieve the parallelogram 864. Additionally, the pitch remote center 666' shown in Figure 18B must lie on the yaw axis 656 for proper kinematics, and be coincident with the remote center 666. The dimension of the long side 868B of the parallelogram 864 may be controlled in part by the straps inside the third link (Link 3) 543. Referring momentarily to Figure 18B, the remote center error 1801 is defined as the distance between the pitch remote center 666' and the yaw axis 656. This remote center error 1801 may be controlled in part by the straps inside the second link (Link 2) 542. Due to tolerances of manufactured components and deflection, the position of the remote center 666 must be calibrated during assembly and may be calibrated periodically during maintenance in the field. Referring to Figure 1 IA, small adjustments to the pitch remote center position 666' can be accomplished by adjusting the tensioning blocks of the tensioning systems 1300,1400 for the straps of the second link 542 and the third link 543.
Figures 18A - 18C illustrate a method of one embodiment of the invention to calibrate the remote center 666 with strap tensioners. Figure 19 is a flowchart that further illustrates this method. The calibration method starts at block 1900 and jumps to block 1902.
At block 1902, the tensioners of straps inside the third link 543 are adjusted to calibrate the length of the long side 868B of the parallelogram. To calibrate the length of the long side 868 of the parallelogram 864, the tensioning system of straps in the third link 543 can be adjusted. Tensioning blocks for strap 626A and strap 626B can adjusted in opposite directions to calibrate the length of the long side 868, in the case of a two strap system in the third link 543. In the case
Doc. No. ISRG00271 of a three strap system in the third link 543, Tensioning blocks for strap 626A and strap 627 or 628 may be adjusted in opposite directions to calibrate the length of the long side S68. This slightly rotates the fourth link (Link 4) 544 about the fourth joint 514 to achieve the desired length in the long side 868B of the parallelogram 864. That is, the tensioning blocks in the third link 543 can be adjusted to set the desired length of the long side 868B from the second joint 512 to the remote center 666.
If, for example, long side 868B is too long, as illustrated by erroneous long side 868B' in Figure 18 A, then the fourth link 544 needs to be rotated clockwise about the axis of rotation at joint 514, relative to the figure. The tensioning screw 1331 in the tensioner block 1312 at end of strap 626 A is loosened, effectively lengthening strap 626A. The tensioning screw 1331 in the tensioner block 1312 at end of strap 626B is tightened, effectively shortening strap 626B. This calibration is completed with the long side 868B of the parallelogram 864 set to the correct length, as shown in Figure 18B.
Figure 18B further shows an example of remote center error 1801, where the pitch remote center 666' is above the yaw axis 656.
At block 1904, the tensioners of straps inside the second link 542 are adjusted to calibrate the remote center error. In this case, the third link 543 needs to be rotated clockwise about the axis of rotation at joint 513, relative to Figure 18B. For this example, the tensioning screw 1331 in the tensioner block 1312 at end of strap 624A is loosened, effectively lengthening strap 624 A. The tensioning screw 1331 in the tensioner block 1312 at end of strap 624B is tightened, effectively shortening strap 624B. This calibration is completed and the remote center error 1801 has been substantially eliminated, when the pitch remote center 666' lays on the yaw axis 656, as shown in Figure 18C.
As discussed previously, the second link 542 and the fourth link 544 are kept from rotating relative to each other by straps 626A, 626B. Thus, when adjustment to remote center error 1801 is made, the parallelogram 864 is maintained and the length of long side 868B is not affected. Regardless, the length of the long side 868B of the parallelogram is verified after the remote center error has been removed.
At block, 1906, a determination is made if the length of the long side 868B of the parallelogram is correct. If not, the method returns to block 1902 and the length of the long side 868B of the parallelogram is calibrated again. If so, the method goes to block 1908.
At block 1908, a determination is made if the remote center error 1801 has been substantially removed. If not, the method returns to block 1904 and the remote center error is
Doc. No. ISRG00271 calibrated out once again. If the remote center error 1801 has been substantially removed, the method of calibration ends at block 1910.
STRAP GUIDE BEARING SYSTEM
In a situation where straps or belts span long distances and pass over idler pulleys, they must be controlled laterally so that they do not wander off of pulleys. Due to variation in manufacturing tolerances of the straps, pulleys and other components, they sometimes wander off of a pulley that is not sufficiently wide enough to handle the variation.
To provide a compact and narrow robotic surgical arm to avoid collisions with other equipment, it is desirable to use narrow idler pulleys. With narrow idler pulleys, proper tracking of straps over idler pulleys is key to avoid strap failure. To keep straps properly tracking on narrow pulleys, a strap guide bearing system may be used.
Referring now to Figure 15, the third link 543 of the robotic surgical arm is illustrated with a three-belt system. Strap 626A extends a long distance between joint pulley 608B and joint pulley 610. In contrast, straps 627 and 628 are constrained laterally by their attachment to the idler pulley 612', and a strap guide system is unnecessary. To keep strap 626A properly tracking on the idler pulley 612% a strap guide system 1500 is provided in link 543. The strap guide system 1500 is mounted inside the housing of link 543 to an inside surface 1502 over a strap 626A such that a pair of spaced apart pulleys or roller bearings 1510A and 1510B straddle the strap 626A. In this manner, the sides of the strap 626A are laterally guided by the roller bearings 151 OA-151OB to maintain proper tracking on pulley 612'.
Figures 16A-16B illustrate alternate embodiments of the strap guide system 1500.
Referring now to Figure 16 A, a magnified prospective view of a strap guide system 1500A is illustrated. The strap guide system 1500A includes the roller bearings 1510A- 151OB, mounting block 1512, an anti-friction pad 1514, dowel pins 1511A-1511B, and one or more fasteners 1516. The one or more fasteners 1516 are used to hold the strap guide system mounted against the surface 1502 of the third link 543.
The anti-friction pad 1514 is coupled up against the mounting block 1512 by the fasteners 1516. The anti-friction pad 1514 reduces abrasion of strap 626A and any flat flex cables and ground straps riding thereon by keeping them all from puffing up too much over the idle pulley 612' when they are under stress. The length of the anti-friction pad 1514 is substantially parallel to the length of the belt. The anti- friction or anti-abrasion pad 1514 may be a PTFE pad, a Teflon pad, or a material having a surface with a low coefficient of friction. The flat flex cables and
Doc. No. ΪSRG00271 ground straps riding on strap 626A through the third link is more fully described in US provisional patent application serial no. 60/752,788 entitled "FLAT ELECTRICAL CONDUCTORS OVER PULLEYS IN A STRAP DRIVE-TRAIN OF A ROBOTIC SURGICAL ARM", filed on 12/21/2005 by Todd Solomon.
Ordinarily the metal belts 626A, 626B do not ride up against the anti-friction pad 1514. Normally there is a gap 153OA between the anti-friction pad 1514 and the metal strap 626A, 626B. However if there is slack in a strap, the gap 1530A may become zero and the anti-friction pad 1514 may press back on the strap.
As mentioned previously, in the three strap system of link three 543, only one strap guide system 1500 is needed for strap 626A. In the two strap system of link three 543, two strap guide systems 1500 are utilized as both straps cover a long distance between pulleys. One strap guide system 1500 is provided for strap 626 A and a second strap guide system 1500 is provided for strap 626B.
The mounting block 1512 is formed of aluminum in one embodiment of the invention. The rollers 1510A-1510B are ball bearings or roller bearings in one embodiment of the invention. The dowel pins 1511 A-1511B are press fit and/or glued into the center race of the bearings to rotatably couple the rollers 151OA-151OB to the mounting block 1512. Alternately, the dowel pins could be an integral part of the rollers 151 OA- 151 OB .
Referring now to Figure 16B, an alternate strap guide system 1500B is illustrated. Strap guide system 1500B is similar to strap guide system 1500A of Figure 16A. There are a number of duplicate elements having the same reference numbers and their description is incorporated here by reference. However, instead of an anti-friction pad 1514, a roller 1524 parallel to the width of the metal belt 626 A, 626B is used to push down on them if they or any other strap puffs up near the idler pulley 612' that might be riding on top of the metal belt. Ordinarily, the metal belt 626A, 626B does not ride up against the roller 1524. Instead there is a gap 1530B between the metal belt 626A, 626B, and the roller 1524.
The belt guide bearing system 1500 is compact and reliably keeps the straps tracking on the narrow idler pulley or pulleys. The belt guide bearing system 1500 may also be used to control the tracking of flat flex cables and a beryllium copper ground strap along with the tensioned metal straps in a robotic surgical arm, as is more fully discussed in US provisional patent application serial no. 60/752,788 entitled "FLAT ELECTRICAL CONDUCTORS OVER PULLEYS IN A STRAP DRIVE-TRAIN OF A ROBOTIC SURGICAL ARM", filed on 12/21/2005 by Todd Solomon.
Doc. No. ISRG00271 CAMBER ADJUSTMENT PULLEY
Instead of or in addition to using a strap guide system to keep the straps tracking on the idler pulleys, a camber adjustment system may be used. The camber adjustment system provides means of adjusting the camber angle of the idler pulleys in order to keep the belts tracking.
Referring now to Figures 17A-17E, a camber adjustable pulley system 1700 is illustrated and now described. One or a pair of pulleys 612A-612B may be provided in the camber adjustable pulley system 1700 to properly guide a one or a pair of straps 626A-626B, respectively. The camber adjustment pulley system 1700 is mounted to the third link 543 by a bracket 1702 and fasteners 1704 as illustrated in Figure 17B.
To adjust the camber of each pulley 612 A, 612B, pivoting or camber adjustment screws 1706 A, 1706B are provided. Each of the idler pulleys 612 A, 612B are respectively supported by bearings 1710A, 1710B and pivotable pulley mounts 1712A, 1712B. Each of the pivotable pulley mounts 1712A, 1712B include a pair of pivot points 1714A, 1714B, near a center of the pulley axis of each pulley 1612A, 1612B. Bracket 1702 has a pair of pivot valleys 1716A, 1716B to receive the pair of pivot points 1714A, 1714B> respectively. As illustrated, the pair of pivot valleys 1716A, 1716B are spaced apart to provide sufficient space in the bracket for the pair of straps, the pair of pulleys, the pair of pivotable pulley mounts, the pair of bearings, and the camber adjustment range, Figure 17D better shows the pair of pivot points 1714A,1714B in each of the pivotable pulley mounts 1712A,1712B.
An open region 1750 illustrated in Figures 17A-17B allows the pulleys 625A-625B and bearings 171 OA-1710B to rotate around the pivotable pulley mounts 1712A, 1712B and the bracket 1702.
Referring now to Figure 17C, a magnified view of a portion of the cross-section better illustrates the camber adjustment screws 1706A, 1706B to adjust the pulley mounts 1712A, 1712B at the bracket 1702 and the third link 543. Arrows 1730A and 1730B illustrate the camber range of motion in each of the pulleys 612A, 612B in response to the camber adjustment screws 1706 A, 1706B. Accordingly, the rotational axis of the pulleys 612A, 612B are tilted independently by the camber adjustment screws 1706A, 1706B.
The camber adjustment screw 1706B is allowed to turn in a non-threaded opening 1725 A in the third link 543. Camber adjustment screw 1706 A is allowed to turn a non-threaded opening 1725B in bracket 1702. As a result, each camber adjustment screw 1706A, 1706B has a snap ring 1720A, 1720B to retain the head of the screws within the respective openings 1725A, 1725B.
Doc. No. ISRG00271 Additionally, each of the camber adjustment screws 1706A, 1706B are preloaded by a spring washer 1722 A, 1722B coupled between the pivoting pulley mount 1712B and the third link 543, in between the bracket 1702 in the pivoting pulley mount 1712A. The spring washers 1722A, 1722B apply pressure to the pivoting pulley mounts 1712A and 1712B to force them away from bracket 1702 and the link 543 respectively. Additionally, the spring washers 1722A, 1722B apply a pressure between the screw threads 1726A, 1726B and the female thread of threaded openings 1728A, 172SB in the pulley mounts 1712A, 1712B so as to deter the screws 1706A, 1706B from turning freely. That is, the camber settings of the pulleys 626A,626B are maintained by deterring movement in the camber adjustment screws 1706A,1706B.
CONCLUSION
The elements previously described of a strap drive train system in a robotic surgical arm provide a number of advantages. The strap drive train provides a reduction in friction of pitch movement of the robotic surgical arm so as to reduce the required motor power and improve back- drive-ability. The strap drive train provides a high degree of stiffness in the robotic surgical arm to reduce vibrations and deflections thereof. The strap drive train provides a high degree of strength in the robotic surgical arm high to increase safety to patients and assistants around the arm. The strap drive train allows easy adjustment of remote center of in the robotic surgical arm to reduce manufacturing and maintenance costs. The strap drive train provides a light and compact robot surgical arm that increases the range of motion and makes it easier to set up and use.
While certain exemplary embodiments of the invention have been described and shown in the accompanying drawings, it is to be understood that such embodiments are merely illustrative of and not restrictive on the broad invention, and that the embodiments of the invention not be limited to the specific constructions and arrangements shown and described, since various other modifications may occur to those ordinarily skilled in the art after reading this disclosure. For example, the embodiments of the invention have been described with reference to a robotic surgical arm. However, the embodiments of the invention are equally applicable to other types of robotic arms and not just robotic surgical arms. Instead, the embodiments of the invention should be construed according to the claims that follow below.
Doc. No. ISRG00271

Claims

CLAIMS What is claimed is:
1. A robotic arm comprising: a linkage assembly including first, second, third, and fourth links pivotally coupled in series together at first, second, and third joints to define a parallelogram with an insertion axis; a strap drive train including first and second sets of straps coupled to the linkage assembly; and wherein as the linkage assembly is moved about a pitch axis, the first set of straps ensures the third link maintains the same angle relative to the first link, and the first and second sets of straps ensures the fourth link maintains the same angle relative to the second link.
2. The robotic arm of claim 1, wherein the first link includes a first joint pulley rigidly coupled thereto, the third link includes a second joint pulley rigidly coupled thereto, and the first set of straps connect the first joint pulley to the second joint pulley in a one- to-one ratio.
3. The robotic arm of claim 2, wherein the second link includes a third joint pulley rigidly coupled thereto, the third joint pulley concentric with but independent of the second joint pulley to pivot independently, the fourth link includes a fourth joint pulley rigidly coupled thereto, and the second set of straps connect the third joint pulley to the fourth joint pulley in a one-to-one ratio.
4. The robotic arm of claim 1, wherein
Doc. No. ΪSRG00271 the third link is bent and includes at least one idler pulley to direct at least one strap of the second set of straps through the third link.
5. The robotic arm of claim 3, wherein the third link includes a bend and at least one idler pulley pi vo tally coupled to the third link near the bend, and a first strap of the second set of straps connecting the third joint pulley to the fourth joint pulley, the first strap rides over the at least one idler pulley to navigate around the bend in the third link.
6. The robotic arm of claim 3, wherein a first end of each of a second strap and a third strap of the second set of straps is wrapped around the at least one idler pulley in opposite directions, a second end of the second strap wrapped around the third joint pulley in an opposite direction to a first end of the first strap, and a second end of the third strap wrapped around the fourth joint pulley in an opposite direction to a second end of the first strap.
7. The robotic arm of claim 6, wherein each strap of the second set of straps are formed of multiple plies of metal.
8. The robotic arm of claim 7, wherein the multiple plies of metal at one end of at least one strap of the second set of straps is joined together by a tab.
9. The robotic arm of claim 7, wherein the multiple plies of metal at one end of at least one strap of the second set of straps is joined together by a tensioning block to tension the second set of straps.
Doc. No. ISRG00271
10. The robotic arm of claim 3, wherein a first end of a second strap of the second set of straps is wrapped around the third joint pulley in an opposite direction to a first end of the first strap, a second end of the second strap wrapped around the fourth joint pulley in an opposite direction to a second end of the first strap, the first strap rides over a first idler pulley, and the second strap is reverse bent over a second idler pulley concentric with but independent of the first idler pulley to pivot in an opposite direction.
11. The robotic arm of claim 10, wherein the first strap is formed of multiple plies of metal, and the second strap is formed of alternating layers of metal and an antifriction material such that the metal layers sandwich the layers of antifriction material.
12. The robotic arm of claim 10, wherein the multiple plies of metal at one end of the first strap are joined together by a first tab; and the alternating layers of metal and an antifriction material at one end of the second strap are joined together by a second tab.
13. The robotic arm of claim 1, further comprising: a drive mount pivotally coupled to the first link of the linkage assembly, the drive mount to mount the robotic arm to a patient side system, the drive mount including a motor to yaw the linkage assembly about a yaw axis.
14. A robotic arm comprising: a serial linkage pivotally coupled in series together including an offset yaw link having a first joint pulley rigidly coupled thereto,
Doc. No. ISRG00271 a drive link having a second joint pulley rigidly coupled thereto, a bent link having a third joint pulley rigidly coupled thereto and an idler pulley, the third joint pulley independent of and concentric with the second joint pulley, and an instrument holder link having a fourth joint pulley rigidly coupled thereto; a strap drive train including a first strap and a second strap in the drive link coupled between the first joint pulley and the third joint pulley; a third strap in the bent link coupled between the second joint pulley and the fourth joint pulley over the idler pulley; a fourth strap in the bent link coupled between the second joint pulley and the idler pulley, and a fifth strap in the bent link coupled between the idler pulley and the fourth joint pulley; and wherein the serial linkage and the strap drive train to constrain the motion of a shaft of a tool to a center of rotation.
15. The robotic arm of claim 14, wherein the offset yaw link to support and pivot the drive link, the bent link, and the instrument holder link together about a yaw axis.
16. The robotic arm of claim 15, further comprising: a drive mount pivotally coupled to the offset yaw link of the serial linkage, the drive mount to mount the robotic arm to a patient side system, the drive mount including a motor to yaw the serial linkage about the yaw axis.
Doc. No. ISRG0027I
17. The robotic arm of claim 14, wherein the drive link further includes at least one motor Io pitch the serial linkage about a pitch axis
18. The robotic arm of claim 14, wherein each of the straps are formed of multiple plies of metal.
19. A robotic arm comprising: a serial linkage pivotally coupled in series together including an offset yaw link having a first joint pulley rigidly coupled thereto, a drive link having a second joint pulley rigidly coupled thereto, a bent link having a third joint pulley rigidly coupled thereto and first and second idler pulleys, the third joint pulley independent of and concentric with the second joint pulley, the first idler pulley independent of and concentric with the second idler pulley, and an instrument holder link having a fourth joint pulley rigidly coupled thereto; a strap drive train including a first strap and a second strap in the drive link coupled between the first joint pulley and the third joint pulley; a third strap in the bent link coupled between the second joint pulley and the fourth joint pulley over the first idler pulley; a fourth strap in the bent link coupled between the second joint pulley and the fourth joint pulley reverse bent over the second idler pulley with ends wrapped around the joint pulleys in an opposite direction to that of ends of the third strap; and wherein the serial linkage and the strap drive train to constrain the motion of a shaft of a tool to a center of rotation.
Doc, No. ISRG00271
20. The robotic arm of claim 19, wherein the first, second, and third straps are each formed of multiple plies of metal, and the fourth strap is formed of alternating layers of metal and an antifriction material such that the metal layers sandwich the layers of antifriction material.
21. A method for a robotic arm, the method comprising: pitching a linkage assembly including first, second, third, and fourth links coupled in series together with a strap drive train coupled thereto, the linkage assembly defining a parallelogram with an insertion axis; ensuring the third link maintains the same angle relative to the first link in response to the pitching of the linkage assembly; and ensuring the fourth link maintains the same angle relative to the second link in response to the pitching of the linkage assembly.
22. The method of claim 21, wherein the first link is pivotally coupled to a mounting base; and prior to pitching the linkage assembly the method further includes mounting the mounting base to a patient side cart.
23. The method of claim 22, wherein the mounting base includes a motor to yaw the linkage assembly; and the method further includes yawing the linkage assembly.
24. A method for a robotic arm, the method comprising: coupling first, second, third, and fourth links in series together at respective first, second, and third joints to form a linkage assembly; coupling a strap drive train to the linkage assembly;
Doc. No. ΪSRG00271 calibrating the linkage assembly to substantially eliminate remote center error and define a parallelogram.
25. The method of claim 24, wherein the linkage assembly is calibrated by adjusting the strap drive train.
26. The method of claim 25, wherein the strap drive train is adjusted to rotate the fourth link about the third joint to calibrate a length in a long side of the parallelogram.
27. The method of claim 26, wherein the strap drive train is adjusted to rotate the third link about the second joint to substantially eliminate the remote center error.
28. A method for a robotic arm, the method comprising: adjusting a strap drive train to rotate an instrument holder link about a joint to calibrate a length in a long side of a parallelogram; adjusting the strap drive train to rotate a main link about a joint to substantially eliminate a remote center error; verifying that the length in the long side of the parallelogram is calibrated; and verifying that the remote center error is substantially eliminated.
29. The method of claim 28, wherein the remote center error has been substantially eliminated if a pitched remote center lays on a yaw axis of the robotic arm.
30. The method of claim 28, wherein
Doc. No. ISRG00271 the length in the long side of the parallelogram is calibrated if il is set to a correct length.
31. The method of claim 28, wherein the strap drive train is adjusted by lengthening a first strap coupled between joint pulleys, and shortening a second strap coupled between the joint pulleys.
32. The method of claim 31, wherein the first strap is effectively lengthened by loosening a first tensioning screw of a first tensioning block at an end of the first strap, and the second strap is effectively shortened by tightening a second tensioning screw of a second tensioning block at an end of the second strap.
33. A robotic arm comprising: a linkage assembly including a plurality of links pivotally coupled in series together at one or more joints to slidingly support a tool along an insertion axis, the plurality of links including a first pulley and a second pulley; at least one strap coupled between the first pulley and the second pulley to drive the linkage assembly; and a strap tensioning system coupled to the at least one strap, the strap tensioning system to tension the at least one strap.
34. The robotic arm of claim 33, wherein the at least one strap is formed of multiple plies of metal generating a spring force to keep the tab locked into the first pocket of the first pulley and the tensioning block locked into the second pocket of the second pulley to avoid complete collapse of the arm if the at least one strap is slackened.
Doc. No. ISRG00271
35. The robotic arm of claim 33, wherein the strap tensioning system includes a swing arm tensioner to adjust the tension in the at least one strap by applying a force thereto; and an idler pulley pivotally coupled to the swing arm tensioner, the idler pulley to ride on the at least one strap.
36. The robotic arm of claim 35, wherein the strap tensioning system further includes one or more swing arm sensors to detect if the at least one strap slackens or breaks.
37. The robotic arm of claim 35, wherein the swing arm tensioner includes a mounting base, a pivotal shaft coupled to the mounting base, an arm with a first end pivotally coupled to the pivotal shaft, a spring coupled between the mounting base and the arm, and a pulley shaft coupled to a second end of the arm and the idler pulley.
38. The robotic arm of claim 37, wherein the swing arm tensioner further includes a fastener to lock a position of the arm of the swing arm tensioner with respect to the mounting base.
39. The robotic arm of claim 37, wherein the swing arm tensioner further includes a brake to lock a position of the arm of the swing arm tensioner with respect to the mounting base.
Doc. No. ISRG00271
40. The robotic arm of claim 39, wherein the brake is an electronically engagable brake controlled by a computer.
41. The robotic arm of claim 33, wherein the strap tensioning system includes the first pulley having a first pocket; the second pulley having a second pocket; and the at least one strap including a tab coupled to a first end, the tab to hook into the first pocket of the first pulley to couple the first end of the at least one strap thereto, and a tensioning block coupled to a second end, the tensioning block to hook into the second pocket of the second pulley to couple the second end of the at least one strap thereto.
42. The robotic arm of claim 41, wherein in the strap tensioning system, the first pulley further has a first recess in a portion of its circumference joining the first pocket to receive the first end of the at least one strap, a first stop at a front of the first pocket to couple to a front side of the tab, a first side restraining protrusion extending from the first stop to retain the tab in the first pocket, and a first lip at the back of the first pocket to further retain the tab in the first pocket; and the second pulley further has a second recess in a portion of its circumference joining the second pocket to receive the second end of the at least one strap, a second stop at a front of the second pocket to couple to a front side of the tensioning block, a second side restraining protrusion extending from the second stop to retain the tensioning block in the second pocket, and a second lip at the back of the second pocket to further retain the tensioning block in the second pocket.
43. The robotic arm of claim 42, wherein the strap tensioning system further includes
Doc. No. 1SRG00271 a tensioning fastener to tension the at least one strap, and wherein the tensioning block has an opening with threads, and the second pulley further has a cutout and an opening into the second pocket to receive the tensioning fastener and allow the tensioning fastener to mate with the threaded opening in the tensioning block.
44. The robotic arm of claim 43, wherein the strap tensioning system further includes a screw-lock heli-coil in the threaded opening of the tensioning block to keep the tensioning fastener from rotating and changing tension on the at least one strap.
45. The robotic arm of claim 43, wherein the strap tensioning system further includes a locking fastener to keep the tensioning fastener from backing out on its own and reducing the tension on the at least one strap, and the second pulley further has a threaded opening to receive the locking fastener and couple it against the tensioning fastener.
46. The robotic arm of claim 33, wherein the strap tensioning system includes the first pulley having a first pocket; the second pulley having a second pocket; and the at least one strap including a tab coupled to a first end, the tab to hook into the first pocket of the first pulley to couple the first end of the at least one strap thereto, and a hooked tab coupled to a second end, the hooked tab having a first hook to couple the second end of the at least one strap to the second pulley.
Doc. No. ΪSRG00271
47. The robotic arm of claim 46, wherein the strap tensioning system further includes a tensioning block with a second hook to mate with the first hook of the hooked tab, the tensioning block has an opening with threads, a tensioning fastener to tension the at least one strap, and wherein the second pulley further has a second recess in a portion of its circumference joining the second pocket to receive the second end of the at least one strap, a second stop at a front of the second pocket to couple to a front side of the tensioning block, a second side restraining protrusion extending from the second stop to retain the tensioning block in the second pocket, a second lip at the back of the second pocket to further retain the tensioning block in the second pocket, and a cutout and an opening into the second pocket to receive the tensioning fastener and allow the tensioning fastener to mate with the threaded opening in the tensioning block.
48. The robotic arm of claim 47, wherein the strap tensioning system further includes a screw-lock heli-coil in the threaded opening of the tensioning block to keep the tensioning fastener from rotating and changing tension on the at least one strap.
49. The robotic ann of claim 47, wherein the strap tensioning system further includes a locking fastener to keep the tensioning fastener from backing out on its own and reducing the tension on the at least one strap, and the second pulley further has a threaded opening to receive the locking fastener and couple it against the tensioning fastener.
50. A strap drive train for a robotic arm, the strap drive train comprising:
Doc. No. ISRG00271 a first pulley with a first pocket; a second pulley with a second pocket; and a first multi-ply strap coupled between the first pulley and the second pulley, the first multi-ply strap including a first coupler coupled to a first end, the first coupler hooked into the first pocket of the first pulley to couple the first end of the first multi-ply strap thereto, a second coupler coupled to a second end, the second coupler hooked into the second pocket of the second pulley to couple the second end of the first multiply strap thereto, wherein the first coupler and the second coupler are each selected from the group consisting of a tab, a hooked tab, and a tensioning block.
51. The strap drive train of claim 50, wherein: the first pulley further has a third pocket; the second pulley further has a fourth pocket; and the strap drive train further includes a second multi-ply strap coupled between the first pulley and the second pulley opposite the first multi-ply strap, the second multi-ply strap including a third coupler coupled to a first end, the third coupler hooked into the third pocket of the first pulley to couple the first end of the second multi-ply strap thereto, a fourth coupler coupled to a second end, the fourth coupler hooked into the fourth pocket of the second pulley to couple the second end of the second multi-ply strap thereto, wherein the third coupler and the fourth coupler are each selected from the group consisting of a tab, a hooked tab, and a tensioning block.
52. The strap drive train of claim 51, wherein
Doc. No. ISRG00271 the first multi-ply strap and the second multi-ply strap are formed of multiple plies of metal generating a spring force to keep the couplers locked into the pockets of the pulleys to avoid complete collapse of the arm if the first or second strap is slackened.
53. A strap guide bearing system comprising: a mounting block to couple to a link; a pair of spaced apart roller bearings rotatably coupled to the mounting block substantially in parallel to each other, the pair of spaced apart roller bearings to straddle a strap and maintain proper tracking of the strap; and an anti -friction mechanism coupled to the mounting block, the anti- friction mechanism to reduce abrasion of the strap straddled between the pair of spaced apart roller bearings.
54. The strap guide bearing system of claim 53, wherein the anti-friction mechanism is an anti-friction pad coupled to the mounting block.
55. The strap guide bearing system of claim 53, wherein the anti-friction mechanism is a roller rotationally coupled to the mounting block and parallel to a width of the strap.
56. The strap guide bearing system of claim 53, further comprising: one or more fasteners to couple the mounting block to the link.
57. The strap guide bearing system of claim 53, further comprising: a pair of dowel pins to rotatably couple the pair of roller bearings to the mounting block, respectively.
58. A method in a link of a robotic arm, the method comprising:
Doc. No. ΪSRG00271 mounting a first strap guide bearing system to a link such that a first pair of roller bearings to straddle a strap; laterally guiding sides of the strap to maintain tracking of the strap on a first pulley; and wherein ordinarily a first gap exist between the strap and an anti-friction mechanism of the first strap guide system.
59. The method of claim 58, further comprising: if the first gap becomes substantially zero, reducing abrasion on the strap by the anti-friction mechanism providing a low coefficient of friction.
60. The method of claim 59, wherein the anti-friction mechanism further presses back on the strap to reduce abrasion.
61. The method of claim 58, wherein the anti-friction mechanism is an anti-friction pad.
62. The method of claim 58, wherein the anti-friction mechanism is a roller parallel to a width of the strap.
63. The method of claim 58, further comprising: mounting a second strap guide bearing system to the link such that a second pair of roller bearings to straddle the strap; laterally guiding sides of the strap to maintain tracking of the strap on a second pulley; and wherein ordinarily a second gap exist between the strap and an anti-friction mechanism of the second strap guide system.
Doc. No. ISRG00271
64. A camber adjustable pulley system comprising: a bracket to mount the camber adjustable pulley system to a link, the bracket having a first pivot valley; a first pivotable pulley mount having a first pivot point mounted in the first pivot valley of the bracket, the first pivot point to pivot the first pivotable pulley mount in the bracket, a first pulley rotatably coupled to the first pivotable pulley mount; and a first camber adjustment mechanism coupled to the bracket and the first pivotable pulley mount, the first camber adjustment mechanism to adjust the first pivotable pulley mount to set the camber of the first pulley; wherein the first pivot point is substantially near a first pulley axis of the first pulley.
65. The camber adjustable pulley system of claim 64, wherein the first camber adjustment mechanism is a first camber adjustment screw inserted through a first opening in the bracket and threaded into the first pivotable pulley mount.
66. The camber adjustable pulley system of claim 65, further comprising: a first snap ring around the first camber adjustment screw between the bracket and the first pivotable pulley mount, the first snap ring to retain the first camber adjustment screw in the first opening in the bracket; and a first spring washer around the first camber adjustment screw between the bracket and the first pivotable pulley mount, the first spring washer to apply pressure to force away the first pivotable pulley mount from the bracket against the first camber adjustment screw.
67. The camber adjustable pulley system of claim 64, further comprising
Doc. No. ISRG00271 a first bearing rotatably coupled between the first pulley and the first pivotable pulley mount, the first bearing to rotatably couple the first pulley to the first pivotable pulley mount.
68. The camber adjustable pulley system of claim 64, wherein the bracket further has a second pivot valley spaced apart from the first pivot valley; and the camber adjustable pulley system further comprises: a second pivotable pulley mount having a second pivot point mounted in the second pivot valley of the bracket, the second pivot point to pivot the second pivotable pulley mount in the bracket, a second pulley rotatably coupled to the second pivotable pulley mount; and a second camber adjustment mechanism coupled to the bracket and the second pivotable pulley mount, the second camber adjustment mechanism to adjust the second pivotable pulley mount to set the camber of the second pulley; wherein the second pivot point is substantially near a second pulley axis of the second pulley.
69. A method in a link of a robotic arm, the method comprising: rotatably supporting a first pulley in a bracket, the first pulley to rotate about a first axis; setting a first adjustment mechanism to pivot the first pulley in the bracket and tilt the first axis; wherein the first adjustment mechanism sets the camber of the first pulley.
70. The method of claim 69, further comprising: rotatably supporting a second pulley in the bracket, the second pulley to rotate about a second axis;
Doc. No. ISRG00271 setting a second adjustment mechanism to pivot the second pulley in the bracket and tilt the second axis; wherein the second adjustment mechanism sets the camber of the second pulley different from the camber of the first pulley.
71. The method of claim 69, wherein the setting of the first adjustment mechanism pivoting a first pivotable pulley mount against the bracket, the first pivotable pulley mount rotatably coupled to the first pulley to pivot the first pulley in the bracket.
72. The method of claim 69, further comprising: maintaining the camber setting of the first pulley in the bracket.
73. The method of claim 72, wherein the camber setting of the first pulley is maintained by deterring movement in the first adjustment mechanism that pivots the first pulley in the bracket.
74. The method of claim 70, further comprising: maintaining the camber settings of the first pulley and the second pulley in the bracket.
75. The method of claim 74, wherein the camber settings of the first pulley and the second pulley are maintained by deterring movement in the first adjustment mechanism that pivots the first pulley in the bracket; and deterring movement in the second adjustment mechanism that pivots the second pulley in the bracket.
Doc. No. ISRG00271
PCT/US2006/062377 2005-12-20 2006-12-20 Multi-ply strap drive trains for robotic arms WO2007120350A2 (en)

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US11/611,849 2006-12-15
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104108107A (en) * 2014-07-04 2014-10-22 合肥鑫众机械有限公司 Mechanical arm installation structure

Families Citing this family (545)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594912B2 (en) 2004-09-30 2009-09-29 Intuitive Surgical, Inc. Offset remote center manipulator for robotic surgery
US9060770B2 (en) 2003-05-20 2015-06-23 Ethicon Endo-Surgery, Inc. Robotically-driven surgical instrument with E-beam driver
US20070084897A1 (en) 2003-05-20 2007-04-19 Shelton Frederick E Iv Articulating surgical stapling instrument incorporating a two-piece e-beam firing mechanism
EP1638466B1 (en) * 2003-06-18 2012-02-08 Koninklijke Philips Electronics N.V. Remotely held needle guide for ct fluoroscopy
US8215531B2 (en) 2004-07-28 2012-07-10 Ethicon Endo-Surgery, Inc. Surgical stapling instrument having a medical substance dispenser
US11890012B2 (en) 2004-07-28 2024-02-06 Cilag Gmbh International Staple cartridge comprising cartridge body and attached support
US10646292B2 (en) * 2004-09-30 2020-05-12 Intuitive Surgical Operations, Inc. Electro-mechanical strap stack in robotic arms
US9261172B2 (en) 2004-09-30 2016-02-16 Intuitive Surgical Operations, Inc. Multi-ply strap drive trains for surgical robotic arms
US10159482B2 (en) 2005-08-31 2018-12-25 Ethicon Llc Fastener cartridge assembly comprising a fixed anvil and different staple heights
US7669746B2 (en) 2005-08-31 2010-03-02 Ethicon Endo-Surgery, Inc. Staple cartridges for forming staples having differing formed staple heights
US7934630B2 (en) 2005-08-31 2011-05-03 Ethicon Endo-Surgery, Inc. Staple cartridges for forming staples having differing formed staple heights
US11246590B2 (en) 2005-08-31 2022-02-15 Cilag Gmbh International Staple cartridge including staple drivers having different unfired heights
US9237891B2 (en) 2005-08-31 2016-01-19 Ethicon Endo-Surgery, Inc. Robotically-controlled surgical stapling devices that produce formed staples having different lengths
US11484312B2 (en) 2005-08-31 2022-11-01 Cilag Gmbh International Staple cartridge comprising a staple driver arrangement
US20070106317A1 (en) 2005-11-09 2007-05-10 Shelton Frederick E Iv Hydraulically and electrically actuated articulation joints for surgical instruments
US9962066B2 (en) * 2005-12-30 2018-05-08 Intuitive Surgical Operations, Inc. Methods and apparatus to shape flexible entry guides for minimally invasive surgery
US7930065B2 (en) 2005-12-30 2011-04-19 Intuitive Surgical Operations, Inc. Robotic surgery system including position sensors using fiber bragg gratings
US11278279B2 (en) 2006-01-31 2022-03-22 Cilag Gmbh International Surgical instrument assembly
US20120292367A1 (en) 2006-01-31 2012-11-22 Ethicon Endo-Surgery, Inc. Robotically-controlled end effector
US20110290856A1 (en) 2006-01-31 2011-12-01 Ethicon Endo-Surgery, Inc. Robotically-controlled surgical instrument with force-feedback capabilities
US8708213B2 (en) 2006-01-31 2014-04-29 Ethicon Endo-Surgery, Inc. Surgical instrument having a feedback system
US11793518B2 (en) 2006-01-31 2023-10-24 Cilag Gmbh International Powered surgical instruments with firing system lockout arrangements
US11224427B2 (en) 2006-01-31 2022-01-18 Cilag Gmbh International Surgical stapling system including a console and retraction assembly
US8186555B2 (en) 2006-01-31 2012-05-29 Ethicon Endo-Surgery, Inc. Motor-driven surgical cutting and fastening instrument with mechanical closure system
US7753904B2 (en) 2006-01-31 2010-07-13 Ethicon Endo-Surgery, Inc. Endoscopic surgical instrument with a handle that can articulate with respect to the shaft
US8820603B2 (en) 2006-01-31 2014-09-02 Ethicon Endo-Surgery, Inc. Accessing data stored in a memory of a surgical instrument
US7845537B2 (en) 2006-01-31 2010-12-07 Ethicon Endo-Surgery, Inc. Surgical instrument having recording capabilities
US20110024477A1 (en) 2009-02-06 2011-02-03 Hall Steven G Driven Surgical Stapler Improvements
US8992422B2 (en) 2006-03-23 2015-03-31 Ethicon Endo-Surgery, Inc. Robotically-controlled endoscopic accessory channel
US8986196B2 (en) 2006-06-13 2015-03-24 Intuitive Surgical Operations, Inc. Minimally invasive surgery instrument assembly with reduced cross section
US8322455B2 (en) 2006-06-27 2012-12-04 Ethicon Endo-Surgery, Inc. Manually driven surgical cutting and fastening instrument
EP2051644A4 (en) * 2006-08-01 2013-03-13 Eon Surgical Ltd System and method for telesurgery
US10568652B2 (en) 2006-09-29 2020-02-25 Ethicon Llc Surgical staples having attached drivers of different heights and stapling instruments for deploying the same
US7506791B2 (en) 2006-09-29 2009-03-24 Ethicon Endo-Surgery, Inc. Surgical stapling instrument with mechanical mechanism for limiting maximum tissue compression
WO2008051911A2 (en) * 2006-10-20 2008-05-02 Cardiorobotics, Inc. Apparatus for positioning a device
US8684253B2 (en) 2007-01-10 2014-04-01 Ethicon Endo-Surgery, Inc. Surgical instrument with wireless communication between a control unit of a robotic system and remote sensor
US11291441B2 (en) 2007-01-10 2022-04-05 Cilag Gmbh International Surgical instrument with wireless communication between control unit and remote sensor
US8652120B2 (en) 2007-01-10 2014-02-18 Ethicon Endo-Surgery, Inc. Surgical instrument with wireless communication between control unit and sensor transponders
US20080169332A1 (en) 2007-01-11 2008-07-17 Shelton Frederick E Surgical stapling device with a curved cutting member
US11039836B2 (en) 2007-01-11 2021-06-22 Cilag Gmbh International Staple cartridge for use with a surgical stapling instrument
DE102007004166A1 (en) * 2007-01-29 2008-08-14 Robert Bosch Gmbh Device for moving and positioning an object in space
US20090001130A1 (en) 2007-03-15 2009-01-01 Hess Christopher J Surgical procedure using a cutting and stapling instrument having releasable staple-forming pockets
US8893946B2 (en) 2007-03-28 2014-11-25 Ethicon Endo-Surgery, Inc. Laparoscopic tissue thickness and clamp load measuring devices
US8931682B2 (en) 2007-06-04 2015-01-13 Ethicon Endo-Surgery, Inc. Robotically-controlled shaft based rotary drive systems for surgical instruments
US11857181B2 (en) 2007-06-04 2024-01-02 Cilag Gmbh International Robotically-controlled shaft based rotary drive systems for surgical instruments
US7753245B2 (en) 2007-06-22 2010-07-13 Ethicon Endo-Surgery, Inc. Surgical stapling instruments
US11849941B2 (en) 2007-06-29 2023-12-26 Cilag Gmbh International Staple cartridge having staple cavities extending at a transverse angle relative to a longitudinal cartridge axis
US8636736B2 (en) 2008-02-14 2014-01-28 Ethicon Endo-Surgery, Inc. Motorized surgical cutting and fastening instrument
US7866527B2 (en) 2008-02-14 2011-01-11 Ethicon Endo-Surgery, Inc. Surgical stapling apparatus with interlockable firing system
US8758391B2 (en) 2008-02-14 2014-06-24 Ethicon Endo-Surgery, Inc. Interchangeable tools for surgical instruments
KR100912104B1 (en) * 2008-02-14 2009-08-13 한국과학기술연구원 Device for generating stiffness and method for controling stiffness and joint of robot manipulator comprising the same
US9179912B2 (en) 2008-02-14 2015-11-10 Ethicon Endo-Surgery, Inc. Robotically-controlled motorized surgical cutting and fastening instrument
US8573465B2 (en) 2008-02-14 2013-11-05 Ethicon Endo-Surgery, Inc. Robotically-controlled surgical end effector system with rotary actuated closure systems
US7819298B2 (en) 2008-02-14 2010-10-26 Ethicon Endo-Surgery, Inc. Surgical stapling apparatus with control features operable with one hand
JP5410110B2 (en) 2008-02-14 2014-02-05 エシコン・エンド−サージェリィ・インコーポレイテッド Surgical cutting / fixing instrument with RF electrode
US9770245B2 (en) 2008-02-15 2017-09-26 Ethicon Llc Layer arrangements for surgical staple cartridges
US11272927B2 (en) 2008-02-15 2022-03-15 Cilag Gmbh International Layer arrangements for surgical staple cartridges
US8886287B2 (en) * 2008-04-14 2014-11-11 Mri Robotics Llc Tissue-stabilization device and method for medical procedures
AU2009260153B2 (en) * 2008-06-18 2015-07-02 Engineering Services Inc. MRI compatible robot with calibration phantom and phantom
IT1391822B1 (en) * 2008-08-30 2012-01-27 Scuola Superiore Di Studi Uni Sant Anna METHOD FOR REMOTE OPERATION OF MECHANISMS AND ESOSCHELETRIC APTIC INTERFACE BASED ON THIS METHOD
US8210411B2 (en) 2008-09-23 2012-07-03 Ethicon Endo-Surgery, Inc. Motor-driven surgical cutting instrument
US9386983B2 (en) 2008-09-23 2016-07-12 Ethicon Endo-Surgery, Llc Robotically-controlled motorized surgical instrument
US11648005B2 (en) 2008-09-23 2023-05-16 Cilag Gmbh International Robotically-controlled motorized surgical instrument with an end effector
US9005230B2 (en) 2008-09-23 2015-04-14 Ethicon Endo-Surgery, Inc. Motorized surgical instrument
US8608045B2 (en) 2008-10-10 2013-12-17 Ethicon Endo-Sugery, Inc. Powered surgical cutting and stapling apparatus with manually retractable firing system
DE202008014487U1 (en) * 2008-10-31 2009-01-22 Mmi Ag Petri dish for cell culture and microscopy
CN102281831B (en) * 2008-12-23 2014-08-13 马科外科公司 Transmission with first and second transmission elements
US8517239B2 (en) 2009-02-05 2013-08-27 Ethicon Endo-Surgery, Inc. Surgical stapling instrument comprising a magnetic element driver
US8444036B2 (en) 2009-02-06 2013-05-21 Ethicon Endo-Surgery, Inc. Motor driven surgical fastener device with mechanisms for adjusting a tissue gap within the end effector
CN102341048A (en) 2009-02-06 2012-02-01 伊西康内外科公司 Driven surgical stapler improvements
US8918207B2 (en) * 2009-03-09 2014-12-23 Intuitive Surgical Operations, Inc. Operator input device for a robotic surgical system
US8112896B2 (en) * 2009-11-06 2012-02-14 Hexagon Metrology Ab Articulated arm
US8220688B2 (en) 2009-12-24 2012-07-17 Ethicon Endo-Surgery, Inc. Motor-driven surgical cutting instrument with electric actuator directional control assembly
US8851354B2 (en) 2009-12-24 2014-10-07 Ethicon Endo-Surgery, Inc. Surgical cutting instrument that analyzes tissue thickness
ITFI20100077A1 (en) * 2010-04-26 2011-10-27 Scuola Superiore Di Studi Universit Ari E Di Perfe ROBOTIC SYSTEM FOR MINIMUM INVASIVE SURGERY INTERVENTIONS
IT1399603B1 (en) * 2010-04-26 2013-04-26 Scuola Superiore Di Studi Universitari E Di Perfez ROBOTIC SYSTEM FOR MINIMUM INVASIVE SURGERY INTERVENTIONS
ITFI20100076A1 (en) * 2010-04-26 2011-10-27 Scuola Superiore Di Studi Universit Ari E Di Perfe ROBOTIC SYSTEM FOR MINIMUM INVASIVE SURGERY INTERVENTIONS
US20110282357A1 (en) 2010-05-14 2011-11-17 Intuitive Surgical Operations, Inc. Surgical system architecture
US8783543B2 (en) 2010-07-30 2014-07-22 Ethicon Endo-Surgery, Inc. Tissue acquisition arrangements and methods for surgical stapling devices
US20130190774A1 (en) * 2010-08-11 2013-07-25 Ecole Polytechnique Ferderale De Lausanne (Epfl) Mechanical positioning system for surgical instruments
US9241714B2 (en) 2011-04-29 2016-01-26 Ethicon Endo-Surgery, Inc. Tissue thickness compensator and method for making the same
US8777004B2 (en) 2010-09-30 2014-07-15 Ethicon Endo-Surgery, Inc. Compressible staple cartridge comprising alignment members
US11812965B2 (en) 2010-09-30 2023-11-14 Cilag Gmbh International Layer of material for a surgical end effector
US9788834B2 (en) 2010-09-30 2017-10-17 Ethicon Llc Layer comprising deployable attachment members
US11298125B2 (en) 2010-09-30 2022-04-12 Cilag Gmbh International Tissue stapler having a thickness compensator
US10945731B2 (en) 2010-09-30 2021-03-16 Ethicon Llc Tissue thickness compensator comprising controlled release and expansion
US9232941B2 (en) 2010-09-30 2016-01-12 Ethicon Endo-Surgery, Inc. Tissue thickness compensator comprising a reservoir
US9364233B2 (en) 2010-09-30 2016-06-14 Ethicon Endo-Surgery, Llc Tissue thickness compensators for circular surgical staplers
US9320523B2 (en) 2012-03-28 2016-04-26 Ethicon Endo-Surgery, Llc Tissue thickness compensator comprising tissue ingrowth features
US9629814B2 (en) 2010-09-30 2017-04-25 Ethicon Endo-Surgery, Llc Tissue thickness compensator configured to redistribute compressive forces
US11925354B2 (en) 2010-09-30 2024-03-12 Cilag Gmbh International Staple cartridge comprising staples positioned within a compressible portion thereof
US8695866B2 (en) 2010-10-01 2014-04-15 Ethicon Endo-Surgery, Inc. Surgical instrument having a power control circuit
ES2536308T3 (en) * 2010-12-01 2015-05-22 Abb Ag Robot manipulator system
CN103402459B (en) * 2011-01-21 2015-10-07 诺瓦-科技工程公司 Poultry injection device and method
BR112013027794B1 (en) 2011-04-29 2020-12-15 Ethicon Endo-Surgery, Inc CLAMP CARTRIDGE SET
US11207064B2 (en) 2011-05-27 2021-12-28 Cilag Gmbh International Automated end effector component reloading system for use with a robotic system
US9072535B2 (en) 2011-05-27 2015-07-07 Ethicon Endo-Surgery, Inc. Surgical stapling instruments with rotatable staple deployment arrangements
JP6021484B2 (en) * 2011-08-04 2016-11-09 オリンパス株式会社 Medical manipulator
JP5841451B2 (en) 2011-08-04 2016-01-13 オリンパス株式会社 Surgical instrument and control method thereof
JP5931497B2 (en) * 2011-08-04 2016-06-08 オリンパス株式会社 Surgery support apparatus and assembly method thereof
JP6009840B2 (en) 2011-08-04 2016-10-19 オリンパス株式会社 Medical equipment
EP2740434A4 (en) 2011-08-04 2015-03-18 Olympus Corp Medical manipulator and method for controlling same
JP6000641B2 (en) 2011-08-04 2016-10-05 オリンパス株式会社 Manipulator system
WO2013018897A1 (en) 2011-08-04 2013-02-07 オリンパス株式会社 Surgical implement and medical treatment manipulator
JP5953058B2 (en) 2011-08-04 2016-07-13 オリンパス株式会社 Surgery support device and method for attaching and detaching the same
EP2740435B8 (en) 2011-08-04 2018-12-19 Olympus Corporation Surgical support apparatus
JP5936914B2 (en) 2011-08-04 2016-06-22 オリンパス株式会社 Operation input device and manipulator system including the same
JP6005950B2 (en) 2011-08-04 2016-10-12 オリンパス株式会社 Surgery support apparatus and control method thereof
JP6081061B2 (en) 2011-08-04 2017-02-15 オリンパス株式会社 Surgery support device
JP6021353B2 (en) 2011-08-04 2016-11-09 オリンパス株式会社 Surgery support device
US9452276B2 (en) 2011-10-14 2016-09-27 Intuitive Surgical Operations, Inc. Catheter with removable vision probe
US10238837B2 (en) 2011-10-14 2019-03-26 Intuitive Surgical Operations, Inc. Catheters with control modes for interchangeable probes
US20130303944A1 (en) 2012-05-14 2013-11-14 Intuitive Surgical Operations, Inc. Off-axis electromagnetic sensor
US9387048B2 (en) 2011-10-14 2016-07-12 Intuitive Surgical Operations, Inc. Catheter sensor systems
EP2768418B1 (en) * 2011-10-19 2017-07-19 Ethicon Endo-Surgery, Inc. Clip applier adapted for use with a surgical robot
US9044230B2 (en) 2012-02-13 2015-06-02 Ethicon Endo-Surgery, Inc. Surgical cutting and fastening instrument with apparatus for determining cartridge and firing motion status
RU2014143258A (en) 2012-03-28 2016-05-20 Этикон Эндо-Серджери, Инк. FABRIC THICKNESS COMPENSATOR CONTAINING MANY LAYERS
CN104334098B (en) 2012-03-28 2017-03-22 伊西康内外科公司 Tissue thickness compensator comprising capsules defining a low pressure environment
MX353040B (en) 2012-03-28 2017-12-18 Ethicon Endo Surgery Inc Retainer assembly including a tissue thickness compensator.
US11135026B2 (en) 2012-05-11 2021-10-05 Peter L. Bono Robotic surgical system
US9101358B2 (en) 2012-06-15 2015-08-11 Ethicon Endo-Surgery, Inc. Articulatable surgical instrument comprising a firing drive
US9408606B2 (en) 2012-06-28 2016-08-09 Ethicon Endo-Surgery, Llc Robotically powered surgical device with manually-actuatable reversing system
BR112014032776B1 (en) 2012-06-28 2021-09-08 Ethicon Endo-Surgery, Inc SURGICAL INSTRUMENT SYSTEM AND SURGICAL KIT FOR USE WITH A SURGICAL INSTRUMENT SYSTEM
JP6290201B2 (en) 2012-06-28 2018-03-07 エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. Lockout for empty clip cartridge
US9282974B2 (en) 2012-06-28 2016-03-15 Ethicon Endo-Surgery, Llc Empty clip cartridge lockout
US20140005718A1 (en) 2012-06-28 2014-01-02 Ethicon Endo-Surgery, Inc. Multi-functional powered surgical device with external dissection features
US11202631B2 (en) 2012-06-28 2021-12-21 Cilag Gmbh International Stapling assembly comprising a firing lockout
US9289256B2 (en) 2012-06-28 2016-03-22 Ethicon Endo-Surgery, Llc Surgical end effectors having angled tissue-contacting surfaces
US20140001231A1 (en) 2012-06-28 2014-01-02 Ethicon Endo-Surgery, Inc. Firing system lockout arrangements for surgical instruments
US9700310B2 (en) 2013-08-23 2017-07-11 Ethicon Llc Firing member retraction devices for powered surgical instruments
JP5423910B1 (en) * 2013-01-17 2014-02-19 株式会社安川電機 robot
JP6345707B2 (en) 2013-03-01 2018-06-20 エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. Surgical instrument with soft stop
JP6382235B2 (en) 2013-03-01 2018-08-29 エシコン・エンド−サージェリィ・インコーポレイテッドEthicon Endo−Surgery,Inc. Articulatable surgical instrument with a conductive path for signal communication
US9687230B2 (en) 2013-03-14 2017-06-27 Ethicon Llc Articulatable surgical instrument comprising a firing drive
US9629629B2 (en) 2013-03-14 2017-04-25 Ethicon Endo-Surgey, LLC Control systems for surgical instruments
EP2967521B1 (en) 2013-03-15 2019-12-25 SRI International Electromechanical surgical system
BR112015026109B1 (en) 2013-04-16 2022-02-22 Ethicon Endo-Surgery, Inc surgical instrument
US9649110B2 (en) 2013-04-16 2017-05-16 Ethicon Llc Surgical instrument comprising a closing drive and a firing drive operated from the same rotatable output
DE102013007597A1 (en) * 2013-05-02 2014-11-06 Kuka Laboratories Gmbh Robot with tool
DE102013209122A1 (en) * 2013-05-16 2014-11-20 Deutsches Zentrum für Luft- und Raumfahrt e.V. Holding device for a surgical instrument
US20140378994A1 (en) * 2013-06-21 2014-12-25 Hiwin Technologies Corp. Spherical linkage type surgical robotic arm
MX369362B (en) 2013-08-23 2019-11-06 Ethicon Endo Surgery Llc Firing member retraction devices for powered surgical instruments.
KR102482948B1 (en) * 2013-08-26 2022-12-29 브룩스 오토메이션 인코퍼레이티드 Substrate transport apparatus
TWI803777B (en) * 2013-08-26 2023-06-01 美商布魯克斯自動機械美國公司 Substrate transport apparatus
CN110074844B (en) 2013-12-11 2023-02-17 柯惠Lp公司 Wrist assembly and jaw assembly for robotic surgical system
TWI523743B (en) * 2014-01-22 2016-03-01 Hiwin Tech Corp Spherical Linkage Robotic Arm
US9962161B2 (en) 2014-02-12 2018-05-08 Ethicon Llc Deliverable surgical instrument
JP6462004B2 (en) 2014-02-24 2019-01-30 エシコン エルエルシー Fastening system with launcher lockout
US10013049B2 (en) 2014-03-26 2018-07-03 Ethicon Llc Power management through sleep options of segmented circuit and wake up control
BR112016021943B1 (en) 2014-03-26 2022-06-14 Ethicon Endo-Surgery, Llc SURGICAL INSTRUMENT FOR USE BY AN OPERATOR IN A SURGICAL PROCEDURE
US20150272557A1 (en) 2014-03-26 2015-10-01 Ethicon Endo-Surgery, Inc. Modular surgical instrument system
US20150272571A1 (en) 2014-03-26 2015-10-01 Ethicon Endo-Surgery, Inc. Surgical instrument utilizing sensor adaptation
CN106456158B (en) 2014-04-16 2019-02-05 伊西康内外科有限责任公司 Fastener cartridge including non-uniform fastener
BR112016023807B1 (en) 2014-04-16 2022-07-12 Ethicon Endo-Surgery, Llc CARTRIDGE SET OF FASTENERS FOR USE WITH A SURGICAL INSTRUMENT
US10327764B2 (en) 2014-09-26 2019-06-25 Ethicon Llc Method for creating a flexible staple line
US10299792B2 (en) 2014-04-16 2019-05-28 Ethicon Llc Fastener cartridge comprising non-uniform fasteners
JP6636452B2 (en) 2014-04-16 2020-01-29 エシコン エルエルシーEthicon LLC Fastener cartridge including extension having different configurations
US20150297223A1 (en) 2014-04-16 2015-10-22 Ethicon Endo-Surgery, Inc. Fastener cartridges including extensions having different configurations
US10231859B1 (en) * 2014-05-01 2019-03-19 Boston Dynamics, Inc. Brace system
CA3193139A1 (en) 2014-05-05 2015-11-12 Vicarious Surgical Inc. Virtual reality surgical device
EP2944259A1 (en) * 2014-05-15 2015-11-18 Buck Engineering & Consulting GmbH Patient positioning device
US10046461B2 (en) * 2014-08-25 2018-08-14 Paul Ekas Link structure and assembly including cable guide system for robotic mechanical manipulator structure
JP6647286B2 (en) * 2014-08-25 2020-02-14 ポール・エカス Shock absorbing and self-realigning robot mechanism
US10111679B2 (en) 2014-09-05 2018-10-30 Ethicon Llc Circuitry and sensors for powered medical device
US11311294B2 (en) 2014-09-05 2022-04-26 Cilag Gmbh International Powered medical device including measurement of closure state of jaws
BR112017004361B1 (en) 2014-09-05 2023-04-11 Ethicon Llc ELECTRONIC SYSTEM FOR A SURGICAL INSTRUMENT
US10105142B2 (en) 2014-09-18 2018-10-23 Ethicon Llc Surgical stapler with plurality of cutting elements
US11523821B2 (en) 2014-09-26 2022-12-13 Cilag Gmbh International Method for creating a flexible staple line
MX2017003960A (en) 2014-09-26 2017-12-04 Ethicon Llc Surgical stapling buttresses and adjunct materials.
US10076325B2 (en) 2014-10-13 2018-09-18 Ethicon Llc Surgical stapling apparatus comprising a tissue stop
US9924944B2 (en) 2014-10-16 2018-03-27 Ethicon Llc Staple cartridge comprising an adjunct material
US11141153B2 (en) 2014-10-29 2021-10-12 Cilag Gmbh International Staple cartridges comprising driver arrangements
US10517594B2 (en) 2014-10-29 2019-12-31 Ethicon Llc Cartridge assemblies for surgical staplers
WO2016069998A1 (en) * 2014-10-30 2016-05-06 Intuitive Surgical Operations, Inc. System and method for articulated arm stabilization
US9844376B2 (en) 2014-11-06 2017-12-19 Ethicon Llc Staple cartridge comprising a releasable adjunct material
US10736636B2 (en) 2014-12-10 2020-08-11 Ethicon Llc Articulatable surgical instrument system
BR112017012996B1 (en) 2014-12-18 2022-11-08 Ethicon Llc SURGICAL INSTRUMENT WITH AN ANvil WHICH IS SELECTIVELY MOVABLE ABOUT AN IMMOVABLE GEOMETRIC AXIS DIFFERENT FROM A STAPLE CARTRIDGE
US10188385B2 (en) 2014-12-18 2019-01-29 Ethicon Llc Surgical instrument system comprising lockable systems
US9943309B2 (en) 2014-12-18 2018-04-17 Ethicon Llc Surgical instruments with articulatable end effectors and movable firing beam support arrangements
US10085748B2 (en) 2014-12-18 2018-10-02 Ethicon Llc Locking arrangements for detachable shaft assemblies with articulatable surgical end effectors
US9844374B2 (en) 2014-12-18 2017-12-19 Ethicon Llc Surgical instrument systems comprising an articulatable end effector and means for adjusting the firing stroke of a firing member
US9844375B2 (en) 2014-12-18 2017-12-19 Ethicon Llc Drive arrangements for articulatable surgical instruments
US9987000B2 (en) 2014-12-18 2018-06-05 Ethicon Llc Surgical instrument assembly comprising a flexible articulation system
CN104622575B (en) * 2014-12-29 2017-01-04 天津大学 A kind of micro-wound operation robot main manipulator based on wire rope gearing
CN104523306B (en) * 2015-01-05 2016-11-23 苏州康多机器人有限公司 A kind of approximation telecentricity fixed point mechanism for Minimally Invasive Surgery operation
DE102015101018A1 (en) 2015-01-23 2016-07-28 MAQUET GmbH Device for holding and moving a laparoscope during an operation
US9974619B2 (en) 2015-02-11 2018-05-22 Engineering Services Inc. Surgical robot
US10695142B2 (en) 2015-02-19 2020-06-30 Covidien Lp Repositioning method of input device for robotic surgical system
US20160249910A1 (en) 2015-02-27 2016-09-01 Ethicon Endo-Surgery, Llc Surgical charging system that charges and/or conditions one or more batteries
US11154301B2 (en) 2015-02-27 2021-10-26 Cilag Gmbh International Modular stapling assembly
US10180463B2 (en) 2015-02-27 2019-01-15 Ethicon Llc Surgical apparatus configured to assess whether a performance parameter of the surgical apparatus is within an acceptable performance band
US10548504B2 (en) 2015-03-06 2020-02-04 Ethicon Llc Overlaid multi sensor radio frequency (RF) electrode system to measure tissue compression
US10441279B2 (en) 2015-03-06 2019-10-15 Ethicon Llc Multiple level thresholds to modify operation of powered surgical instruments
JP2020121162A (en) 2015-03-06 2020-08-13 エシコン エルエルシーEthicon LLC Time dependent evaluation of sensor data to determine stability element, creep element and viscoelastic element of measurement
US9901342B2 (en) 2015-03-06 2018-02-27 Ethicon Endo-Surgery, Llc Signal and power communication system positioned on a rotatable shaft
US10687806B2 (en) 2015-03-06 2020-06-23 Ethicon Llc Adaptive tissue compression techniques to adjust closure rates for multiple tissue types
US10617412B2 (en) 2015-03-06 2020-04-14 Ethicon Llc System for detecting the mis-insertion of a staple cartridge into a surgical stapler
US9993248B2 (en) 2015-03-06 2018-06-12 Ethicon Endo-Surgery, Llc Smart sensors with local signal processing
US9924961B2 (en) 2015-03-06 2018-03-27 Ethicon Endo-Surgery, Llc Interactive feedback system for powered surgical instruments
US9808246B2 (en) 2015-03-06 2017-11-07 Ethicon Endo-Surgery, Llc Method of operating a powered surgical instrument
US10245033B2 (en) 2015-03-06 2019-04-02 Ethicon Llc Surgical instrument comprising a lockable battery housing
CA2977413A1 (en) 2015-03-10 2016-09-15 Covidien Lp Measuring health of a connector member of a robotic surgical system
DE102015204867A1 (en) * 2015-03-18 2016-09-22 Kuka Roboter Gmbh Robot system and method for operating a teleoperative process
US10213201B2 (en) 2015-03-31 2019-02-26 Ethicon Llc Stapling end effector configured to compensate for an uneven gap between a first jaw and a second jaw
CN104948687B (en) * 2015-05-07 2019-03-19 东方晶源微电子科技(北京)有限公司 A kind of tape handler suitable for ray machine detection system
US10653489B2 (en) 2015-05-11 2020-05-19 Covidien Lp Coupling instrument drive unit and robotic surgical instrument
WO2016196238A1 (en) 2015-06-03 2016-12-08 Covidien Lp Offset instrument drive unit
US10507068B2 (en) 2015-06-16 2019-12-17 Covidien Lp Robotic surgical system torque transduction sensing
WO2016205452A1 (en) 2015-06-19 2016-12-22 Covidien Lp Controlling robotic surgical instruments with bidirectional coupling
WO2016205288A1 (en) * 2015-06-19 2016-12-22 Covidien Lp Robotic surgical assemblies
JP6719487B2 (en) 2015-06-23 2020-07-08 コヴィディエン リミテッド パートナーシップ Robotic surgery assembly
EP3325233A1 (en) * 2015-07-23 2018-05-30 SRI International Inc. Robotic arm and robotic surgical system
USD825066S1 (en) * 2015-08-03 2018-08-07 Imperial Innovations Limited Surgical arm
US10835249B2 (en) 2015-08-17 2020-11-17 Ethicon Llc Implantable layers for a surgical instrument
CN105012023A (en) * 2015-08-19 2015-11-04 哈尔滨工业大学 Instrument holding mechanical arm used for minimally-invasive robot
US10363036B2 (en) 2015-09-23 2019-07-30 Ethicon Llc Surgical stapler having force-based motor control
US10105139B2 (en) 2015-09-23 2018-10-23 Ethicon Llc Surgical stapler having downstream current-based motor control
US10327769B2 (en) 2015-09-23 2019-06-25 Ethicon Llc Surgical stapler having motor control based on a drive system component
US10238386B2 (en) 2015-09-23 2019-03-26 Ethicon Llc Surgical stapler having motor control based on an electrical parameter related to a motor current
WO2017053363A1 (en) 2015-09-25 2017-03-30 Covidien Lp Robotic surgical assemblies and instrument drive connectors thereof
US10299878B2 (en) 2015-09-25 2019-05-28 Ethicon Llc Implantable adjunct systems for determining adjunct skew
US10478188B2 (en) 2015-09-30 2019-11-19 Ethicon Llc Implantable layer comprising a constricted configuration
US10736633B2 (en) 2015-09-30 2020-08-11 Ethicon Llc Compressible adjunct with looping members
US10980539B2 (en) 2015-09-30 2021-04-20 Ethicon Llc Implantable adjunct comprising bonded layers
US11890015B2 (en) 2015-09-30 2024-02-06 Cilag Gmbh International Compressible adjunct with crossing spacer fibers
EP3878396A1 (en) 2015-10-23 2021-09-15 Covidien LP Surgical system for detecting gradual changes in perfusion
WO2017087439A1 (en) 2015-11-19 2017-05-26 Covidien Lp Optical force sensor for robotic surgical system
EP3376961B1 (en) * 2015-11-21 2021-03-10 Attili Venkata Satya Suresh System and method for automated gross examination of tissues
US10265068B2 (en) 2015-12-30 2019-04-23 Ethicon Llc Surgical instruments with separable motors and motor control circuits
US10292704B2 (en) 2015-12-30 2019-05-21 Ethicon Llc Mechanisms for compensating for battery pack failure in powered surgical instruments
US10368865B2 (en) 2015-12-30 2019-08-06 Ethicon Llc Mechanisms for compensating for drivetrain failure in powered surgical instruments
JP6911054B2 (en) 2016-02-09 2021-07-28 エシコン エルエルシーEthicon LLC Surgical instruments with asymmetric joint composition
US10588625B2 (en) 2016-02-09 2020-03-17 Ethicon Llc Articulatable surgical instruments with off-axis firing beam arrangements
US11213293B2 (en) 2016-02-09 2022-01-04 Cilag Gmbh International Articulatable surgical instruments with single articulation link arrangements
US10448948B2 (en) 2016-02-12 2019-10-22 Ethicon Llc Mechanisms for compensating for drivetrain failure in powered surgical instruments
US11224426B2 (en) 2016-02-12 2022-01-18 Cilag Gmbh International Mechanisms for compensating for drivetrain failure in powered surgical instruments
US10258331B2 (en) 2016-02-12 2019-04-16 Ethicon Llc Mechanisms for compensating for drivetrain failure in powered surgical instruments
US10617413B2 (en) 2016-04-01 2020-04-14 Ethicon Llc Closure system arrangements for surgical cutting and stapling devices with separate and distinct firing shafts
US11064997B2 (en) 2016-04-01 2021-07-20 Cilag Gmbh International Surgical stapling instrument
WO2017173524A1 (en) 2016-04-07 2017-10-12 Titan Medical Inc. Camera positioning method and apparatus for capturing images during a medical procedure
US11607239B2 (en) 2016-04-15 2023-03-21 Cilag Gmbh International Systems and methods for controlling a surgical stapling and cutting instrument
US10828028B2 (en) 2016-04-15 2020-11-10 Ethicon Llc Surgical instrument with multiple program responses during a firing motion
US10357247B2 (en) 2016-04-15 2019-07-23 Ethicon Llc Surgical instrument with multiple program responses during a firing motion
US10405859B2 (en) 2016-04-15 2019-09-10 Ethicon Llc Surgical instrument with adjustable stop/start control during a firing motion
US10335145B2 (en) 2016-04-15 2019-07-02 Ethicon Llc Modular surgical instrument with configurable operating mode
US10456137B2 (en) 2016-04-15 2019-10-29 Ethicon Llc Staple formation detection mechanisms
US10492783B2 (en) 2016-04-15 2019-12-03 Ethicon, Llc Surgical instrument with improved stop/start control during a firing motion
US10426467B2 (en) 2016-04-15 2019-10-01 Ethicon Llc Surgical instrument with detection sensors
US11179150B2 (en) 2016-04-15 2021-11-23 Cilag Gmbh International Systems and methods for controlling a surgical stapling and cutting instrument
US10433840B2 (en) 2016-04-18 2019-10-08 Ethicon Llc Surgical instrument comprising a replaceable cartridge jaw
US11317917B2 (en) 2016-04-18 2022-05-03 Cilag Gmbh International Surgical stapling system comprising a lockable firing assembly
US20170296173A1 (en) 2016-04-18 2017-10-19 Ethicon Endo-Surgery, Llc Method for operating a surgical instrument
ES2781308T3 (en) 2016-05-16 2020-09-01 Nova Tech Eng Llc Poultry Injection Apparatus with Swivel Capture Members
AU2017269262B2 (en) 2016-05-26 2021-09-09 Covidien Lp Robotic surgical assemblies
AU2017269374B2 (en) 2016-05-26 2021-07-08 Covidien Lp Instrument drive units
CA3022165A1 (en) * 2016-05-26 2017-11-30 Covidien Lp Robotic surgical assemblies and instrument drive units thereof
CN109152612A (en) 2016-06-03 2019-01-04 柯惠Lp公司 Robotic surgical system with embedded imaging instrument
WO2017210074A1 (en) 2016-06-03 2017-12-07 Covidien Lp Passive axis system for robotic surgical systems
EP3463162A4 (en) 2016-06-03 2020-06-24 Covidien LP Systems, methods, and computer-readable program products for controlling a robotically delivered manipulator
CN113180835A (en) 2016-06-03 2021-07-30 柯惠Lp公司 Control arm for robotic surgical system
KR101848027B1 (en) * 2016-08-16 2018-04-12 주식회사 고영테크놀러지 Surgical robot system for stereotactic surgery and method for controlling a stereotactic surgery robot
CN106109019B (en) * 2016-08-31 2018-11-09 微创(上海)医疗机器人有限公司 Instruments box and surgical instrument
AU2017326462B2 (en) * 2016-09-16 2020-02-27 Verb Surgical Inc. Robotic arms
US11345053B2 (en) 2016-09-16 2022-05-31 Verb Surgical Inc. Belt termination and tensioning in a pulley arrangement for a robotic arm
WO2018053361A1 (en) 2016-09-16 2018-03-22 Verb Surgical Inc. Multi-degree of freedom sensor
US10465094B2 (en) * 2016-12-08 2019-11-05 Ethicon, Inc. Method of applying rapid cure silicone lubricious coatings
US10568706B2 (en) 2016-12-15 2020-02-25 Ethicon Llc Trocar Simulation
CN106584445B (en) * 2016-12-16 2018-12-25 微创(上海)医疗机器人有限公司 Fixed point mechanism
CN106618736B (en) 2016-12-16 2019-03-08 微创(上海)医疗机器人有限公司 Mechanical arm and operating robot with double freedom
US10675026B2 (en) 2016-12-21 2020-06-09 Ethicon Llc Methods of stapling tissue
US20180168608A1 (en) 2016-12-21 2018-06-21 Ethicon Endo-Surgery, Llc Surgical instrument system comprising an end effector lockout and a firing assembly lockout
US10524789B2 (en) 2016-12-21 2020-01-07 Ethicon Llc Laterally actuatable articulation lock arrangements for locking an end effector of a surgical instrument in an articulated configuration
US10485543B2 (en) 2016-12-21 2019-11-26 Ethicon Llc Anvil having a knife slot width
US10588631B2 (en) 2016-12-21 2020-03-17 Ethicon Llc Surgical instruments with positive jaw opening features
US20180168598A1 (en) 2016-12-21 2018-06-21 Ethicon Endo-Surgery, Llc Staple forming pocket arrangements comprising zoned forming surface grooves
US10888322B2 (en) 2016-12-21 2021-01-12 Ethicon Llc Surgical instrument comprising a cutting member
US20180168625A1 (en) 2016-12-21 2018-06-21 Ethicon Endo-Surgery, Llc Surgical stapling instruments with smart staple cartridges
US20180168615A1 (en) 2016-12-21 2018-06-21 Ethicon Endo-Surgery, Llc Method of deforming staples from two different types of staple cartridges with the same surgical stapling instrument
US10980536B2 (en) 2016-12-21 2021-04-20 Ethicon Llc No-cartridge and spent cartridge lockout arrangements for surgical staplers
JP7010956B2 (en) 2016-12-21 2022-01-26 エシコン エルエルシー How to staple tissue
US10426471B2 (en) 2016-12-21 2019-10-01 Ethicon Llc Surgical instrument with multiple failure response modes
US10588632B2 (en) 2016-12-21 2020-03-17 Ethicon Llc Surgical end effectors and firing members thereof
US11134942B2 (en) 2016-12-21 2021-10-05 Cilag Gmbh International Surgical stapling instruments and staple-forming anvils
US11419606B2 (en) 2016-12-21 2022-08-23 Cilag Gmbh International Shaft assembly comprising a clutch configured to adapt the output of a rotary firing member to two different systems
JP6983893B2 (en) 2016-12-21 2021-12-17 エシコン エルエルシーEthicon LLC Lockout configuration for surgical end effectors and replaceable tool assemblies
JP2020501779A (en) 2016-12-21 2020-01-23 エシコン エルエルシーEthicon LLC Surgical stapling system
US10835246B2 (en) 2016-12-21 2020-11-17 Ethicon Llc Staple cartridges and arrangements of staples and staple cavities therein
US10675025B2 (en) 2016-12-21 2020-06-09 Ethicon Llc Shaft assembly comprising separately actuatable and retractable systems
CN106725859A (en) * 2016-12-26 2017-05-31 苏州康多机器人有限公司 The steel wire rope that a kind of part is substituted by his thing
EP3579736A4 (en) 2017-02-09 2020-12-23 Vicarious Surgical Inc. Virtual reality surgical tools system
CA3048039A1 (en) 2017-02-15 2018-08-23 Covidien Lp System and apparatus for crush prevention for medical robot applications
JP6445604B2 (en) * 2017-03-07 2018-12-26 上銀科技股▲フン▼有限公司 Robot arm
CN108568841A (en) * 2017-03-13 2018-09-25 赵德政 mechanical arm with synchronous belt transmission device
US11717361B2 (en) 2017-05-24 2023-08-08 Covidien Lp Electrosurgical robotic system having tool presence detection
CN110621255B (en) 2017-05-25 2023-03-07 柯惠Lp公司 Robotic surgical system and drape for covering components of robotic surgical system
JP7130003B2 (en) 2017-05-25 2022-09-02 コヴィディエン リミテッド パートナーシップ Systems and methods for detection of objects within the field of view of an image capture device
CN110662507A (en) 2017-05-25 2020-01-07 柯惠Lp公司 Robotic surgical system with automatic guidance
US11382638B2 (en) 2017-06-20 2022-07-12 Cilag Gmbh International Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on measured time over a specified displacement distance
US11517325B2 (en) 2017-06-20 2022-12-06 Cilag Gmbh International Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on measured displacement distance traveled over a specified time interval
US10624633B2 (en) 2017-06-20 2020-04-21 Ethicon Llc Systems and methods for controlling motor velocity of a surgical stapling and cutting instrument
US11653914B2 (en) 2017-06-20 2023-05-23 Cilag Gmbh International Systems and methods for controlling motor velocity of a surgical stapling and cutting instrument according to articulation angle of end effector
US10888321B2 (en) 2017-06-20 2021-01-12 Ethicon Llc Systems and methods for controlling velocity of a displacement member of a surgical stapling and cutting instrument
US10307170B2 (en) 2017-06-20 2019-06-04 Ethicon Llc Method for closed loop control of motor velocity of a surgical stapling and cutting instrument
US11071554B2 (en) 2017-06-20 2021-07-27 Cilag Gmbh International Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on magnitude of velocity error measurements
US10779820B2 (en) 2017-06-20 2020-09-22 Ethicon Llc Systems and methods for controlling motor speed according to user input for a surgical instrument
USD890784S1 (en) 2017-06-20 2020-07-21 Ethicon Llc Display panel with changeable graphical user interface
US11090046B2 (en) 2017-06-20 2021-08-17 Cilag Gmbh International Systems and methods for controlling displacement member motion of a surgical stapling and cutting instrument
US10327767B2 (en) 2017-06-20 2019-06-25 Ethicon Llc Control of motor velocity of a surgical stapling and cutting instrument based on angle of articulation
USD879808S1 (en) 2017-06-20 2020-03-31 Ethicon Llc Display panel with graphical user interface
US10368864B2 (en) 2017-06-20 2019-08-06 Ethicon Llc Systems and methods for controlling displaying motor velocity for a surgical instrument
US10881396B2 (en) 2017-06-20 2021-01-05 Ethicon Llc Surgical instrument with variable duration trigger arrangement
US10390841B2 (en) 2017-06-20 2019-08-27 Ethicon Llc Control of motor velocity of a surgical stapling and cutting instrument based on angle of articulation
USD879809S1 (en) 2017-06-20 2020-03-31 Ethicon Llc Display panel with changeable graphical user interface
US10881399B2 (en) 2017-06-20 2021-01-05 Ethicon Llc Techniques for adaptive control of motor velocity of a surgical stapling and cutting instrument
US10813639B2 (en) 2017-06-20 2020-10-27 Ethicon Llc Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on system conditions
US10980537B2 (en) 2017-06-20 2021-04-20 Ethicon Llc Closed loop feedback control of motor velocity of a surgical stapling and cutting instrument based on measured time over a specified number of shaft rotations
US10646220B2 (en) 2017-06-20 2020-05-12 Ethicon Llc Systems and methods for controlling displacement member velocity for a surgical instrument
US11266405B2 (en) 2017-06-27 2022-03-08 Cilag Gmbh International Surgical anvil manufacturing methods
US10772629B2 (en) 2017-06-27 2020-09-15 Ethicon Llc Surgical anvil arrangements
US11324503B2 (en) 2017-06-27 2022-05-10 Cilag Gmbh International Surgical firing member arrangements
US10993716B2 (en) 2017-06-27 2021-05-04 Ethicon Llc Surgical anvil arrangements
US11141154B2 (en) 2017-06-27 2021-10-12 Cilag Gmbh International Surgical end effectors and anvils
US10856869B2 (en) 2017-06-27 2020-12-08 Ethicon Llc Surgical anvil arrangements
US11246592B2 (en) 2017-06-28 2022-02-15 Cilag Gmbh International Surgical instrument comprising an articulation system lockable to a frame
US10716614B2 (en) 2017-06-28 2020-07-21 Ethicon Llc Surgical shaft assemblies with slip ring assemblies with increased contact pressure
USD851762S1 (en) 2017-06-28 2019-06-18 Ethicon Llc Anvil
USD854151S1 (en) 2017-06-28 2019-07-16 Ethicon Llc Surgical instrument shaft
EP4070740A1 (en) 2017-06-28 2022-10-12 Cilag GmbH International Surgical instrument comprising selectively actuatable rotatable couplers
US10903685B2 (en) 2017-06-28 2021-01-26 Ethicon Llc Surgical shaft assemblies with slip ring assemblies forming capacitive channels
US11058424B2 (en) 2017-06-28 2021-07-13 Cilag Gmbh International Surgical instrument comprising an offset articulation joint
USD869655S1 (en) 2017-06-28 2019-12-10 Ethicon Llc Surgical fastener cartridge
US11564686B2 (en) 2017-06-28 2023-01-31 Cilag Gmbh International Surgical shaft assemblies with flexible interfaces
US20190000461A1 (en) 2017-06-28 2019-01-03 Ethicon Llc Surgical cutting and fastening devices with pivotable anvil with a tissue locating arrangement in close proximity to an anvil pivot axis
US10765427B2 (en) 2017-06-28 2020-09-08 Ethicon Llc Method for articulating a surgical instrument
US10211586B2 (en) 2017-06-28 2019-02-19 Ethicon Llc Surgical shaft assemblies with watertight housings
USD906355S1 (en) 2017-06-28 2020-12-29 Ethicon Llc Display screen or portion thereof with a graphical user interface for a surgical instrument
US11259805B2 (en) 2017-06-28 2022-03-01 Cilag Gmbh International Surgical instrument comprising firing member supports
US10898183B2 (en) 2017-06-29 2021-01-26 Ethicon Llc Robotic surgical instrument with closed loop feedback techniques for advancement of closure member during firing
US10932772B2 (en) 2017-06-29 2021-03-02 Ethicon Llc Methods for closed loop velocity control for robotic surgical instrument
US10258418B2 (en) 2017-06-29 2019-04-16 Ethicon Llc System for controlling articulation forces
US11007022B2 (en) 2017-06-29 2021-05-18 Ethicon Llc Closed loop velocity control techniques based on sensed tissue parameters for robotic surgical instrument
US10398434B2 (en) 2017-06-29 2019-09-03 Ethicon Llc Closed loop velocity control of closure member for robotic surgical instrument
CN107361849B (en) 2017-07-31 2023-11-21 成都博恩思医学机器人有限公司 Console for actuating an actuator
CN107423515B (en) * 2017-08-01 2020-08-04 中科新松有限公司 Mechanical arm friction identification method, device, equipment and storage medium
US11304695B2 (en) 2017-08-03 2022-04-19 Cilag Gmbh International Surgical system shaft interconnection
US11471155B2 (en) 2017-08-03 2022-10-18 Cilag Gmbh International Surgical system bailout
EP3678572A4 (en) 2017-09-05 2021-09-29 Covidien LP Collision handling algorithms for robotic surgical systems
EP3678573A4 (en) 2017-09-06 2021-06-02 Covidien LP Boundary scaling of surgical robots
CN111065352B (en) 2017-09-08 2023-09-01 柯惠Lp公司 High precision instrument control mode of robotic surgical system
EP3681368A4 (en) 2017-09-14 2021-06-23 Vicarious Surgical Inc. Virtual reality surgical camera system
US10765429B2 (en) 2017-09-29 2020-09-08 Ethicon Llc Systems and methods for providing alerts according to the operational state of a surgical instrument
US10796471B2 (en) 2017-09-29 2020-10-06 Ethicon Llc Systems and methods of displaying a knife position for a surgical instrument
US10743872B2 (en) 2017-09-29 2020-08-18 Ethicon Llc System and methods for controlling a display of a surgical instrument
US10729501B2 (en) 2017-09-29 2020-08-04 Ethicon Llc Systems and methods for language selection of a surgical instrument
USD907648S1 (en) 2017-09-29 2021-01-12 Ethicon Llc Display screen or portion thereof with animated graphical user interface
USD907647S1 (en) 2017-09-29 2021-01-12 Ethicon Llc Display screen or portion thereof with animated graphical user interface
US11399829B2 (en) 2017-09-29 2022-08-02 Cilag Gmbh International Systems and methods of initiating a power shutdown mode for a surgical instrument
USD917500S1 (en) 2017-09-29 2021-04-27 Ethicon Llc Display screen or portion thereof with graphical user interface
WO2019083983A2 (en) 2017-10-23 2019-05-02 Bono Peter L Rotary oscillating/reciprocating surgical tool
US11134944B2 (en) 2017-10-30 2021-10-05 Cilag Gmbh International Surgical stapler knife motion controls
US11090075B2 (en) 2017-10-30 2021-08-17 Cilag Gmbh International Articulation features for surgical end effector
US10842490B2 (en) 2017-10-31 2020-11-24 Ethicon Llc Cartridge body design with force reduction based on firing completion
US10779903B2 (en) 2017-10-31 2020-09-22 Ethicon Llc Positive shaft rotation lock activated by jaw closure
EP3723650A4 (en) * 2017-12-14 2021-08-18 Intuitive Surgical Operations, Inc. Medical tools having tension bands
US11033267B2 (en) 2017-12-15 2021-06-15 Ethicon Llc Systems and methods of controlling a clamping member firing rate of a surgical instrument
US10966718B2 (en) 2017-12-15 2021-04-06 Ethicon Llc Dynamic clamping assemblies with improved wear characteristics for use in connection with electromechanical surgical instruments
US10779825B2 (en) 2017-12-15 2020-09-22 Ethicon Llc Adapters with end effector position sensing and control arrangements for use in connection with electromechanical surgical instruments
US11006955B2 (en) 2017-12-15 2021-05-18 Ethicon Llc End effectors with positive jaw opening features for use with adapters for electromechanical surgical instruments
US10869666B2 (en) 2017-12-15 2020-12-22 Ethicon Llc Adapters with control systems for controlling multiple motors of an electromechanical surgical instrument
US10828033B2 (en) 2017-12-15 2020-11-10 Ethicon Llc Handheld electromechanical surgical instruments with improved motor control arrangements for positioning components of an adapter coupled thereto
US10743874B2 (en) 2017-12-15 2020-08-18 Ethicon Llc Sealed adapters for use with electromechanical surgical instruments
US10779826B2 (en) 2017-12-15 2020-09-22 Ethicon Llc Methods of operating surgical end effectors
US10687813B2 (en) 2017-12-15 2020-06-23 Ethicon Llc Adapters with firing stroke sensing arrangements for use in connection with electromechanical surgical instruments
US11071543B2 (en) 2017-12-15 2021-07-27 Cilag Gmbh International Surgical end effectors with clamping assemblies configured to increase jaw aperture ranges
US10743875B2 (en) 2017-12-15 2020-08-18 Ethicon Llc Surgical end effectors with jaw stiffener arrangements configured to permit monitoring of firing member
US11197670B2 (en) 2017-12-15 2021-12-14 Cilag Gmbh International Surgical end effectors with pivotal jaws configured to touch at their respective distal ends when fully closed
US10729509B2 (en) 2017-12-19 2020-08-04 Ethicon Llc Surgical instrument comprising closure and firing locking mechanism
US10716565B2 (en) 2017-12-19 2020-07-21 Ethicon Llc Surgical instruments with dual articulation drivers
US10835330B2 (en) 2017-12-19 2020-11-17 Ethicon Llc Method for determining the position of a rotatable jaw of a surgical instrument attachment assembly
US11020112B2 (en) 2017-12-19 2021-06-01 Ethicon Llc Surgical tools configured for interchangeable use with different controller interfaces
US11045270B2 (en) 2017-12-19 2021-06-29 Cilag Gmbh International Robotic attachment comprising exterior drive actuator
USD910847S1 (en) 2017-12-19 2021-02-16 Ethicon Llc Surgical instrument assembly
US10682134B2 (en) 2017-12-21 2020-06-16 Ethicon Llc Continuous use self-propelled stapling instrument
US11076853B2 (en) 2017-12-21 2021-08-03 Cilag Gmbh International Systems and methods of displaying a knife position during transection for a surgical instrument
US11129680B2 (en) 2017-12-21 2021-09-28 Cilag Gmbh International Surgical instrument comprising a projector
US11311290B2 (en) 2017-12-21 2022-04-26 Cilag Gmbh International Surgical instrument comprising an end effector dampener
AU2019205201B2 (en) 2018-01-04 2020-11-05 Covidien Lp Systems and assemblies for mounting a surgical accessory to robotic surgical systems, and providing access therethrough
CN111565664A (en) * 2018-01-10 2020-08-21 柯惠Lp公司 Surgical robot arm and pulley assembly thereof
CA3088304A1 (en) 2018-01-12 2019-07-18 Peter L. BONO Robotic surgical control system
US11189379B2 (en) 2018-03-06 2021-11-30 Digital Surgery Limited Methods and systems for using multiple data structures to process surgical data
WO2019173268A1 (en) * 2018-03-07 2019-09-12 Intuitive Surgical Operations, Inc. Low-friction, small profile medical tools having easy-to-assemble components
EP3761897A4 (en) 2018-03-07 2021-11-24 Intuitive Surgical Operations, Inc. Low-friction, small profile medical tools having easy-to-assemble components
WO2019173056A1 (en) 2018-03-08 2019-09-12 Covidien Lp Surgical robotic systems
SG11202010258VA (en) 2018-04-17 2020-11-27 Chengdu Borns Medical Robotics Inc Laparoscope-holding robot system for laparoscopic surgery
CN108338840A (en) * 2018-04-17 2018-07-31 成都博恩思医学机器人有限公司 A kind of laparoscopic surgery holds robot system with endoscope
CN108338841B (en) * 2018-04-17 2021-03-23 成都博恩思医学机器人有限公司 Laparoscopic surgery holds mirror robot system
CN111989065A (en) 2018-04-20 2020-11-24 柯惠Lp公司 Compensation of observer movement in a robotic surgical system with a stereoscopic display
WO2019222495A1 (en) 2018-05-18 2019-11-21 Auris Health, Inc. Controllers for robotically-enabled teleoperated systems
WO2019240453A1 (en) * 2018-06-12 2019-12-19 주식회사 미래컴퍼니 Robot arm structure and surgical robot manipulator including same
KR102206647B1 (en) * 2018-06-12 2021-01-22 (주)미래컴퍼니 Robot arm structure and manipulator for surgical robot comprising the same
US11576739B2 (en) 2018-07-03 2023-02-14 Covidien Lp Systems, methods, and computer-readable media for detecting image degradation during surgical procedures
US10842492B2 (en) 2018-08-20 2020-11-24 Ethicon Llc Powered articulatable surgical instruments with clutching and locking arrangements for linking an articulation drive system to a firing drive system
US11291440B2 (en) 2018-08-20 2022-04-05 Cilag Gmbh International Method for operating a powered articulatable surgical instrument
US10779821B2 (en) 2018-08-20 2020-09-22 Ethicon Llc Surgical stapler anvils with tissue stop features configured to avoid tissue pinch
US11253256B2 (en) 2018-08-20 2022-02-22 Cilag Gmbh International Articulatable motor powered surgical instruments with dedicated articulation motor arrangements
US11324501B2 (en) 2018-08-20 2022-05-10 Cilag Gmbh International Surgical stapling devices with improved closure members
USD914878S1 (en) 2018-08-20 2021-03-30 Ethicon Llc Surgical instrument anvil
US11045192B2 (en) 2018-08-20 2021-06-29 Cilag Gmbh International Fabricating techniques for surgical stapler anvils
US11039834B2 (en) 2018-08-20 2021-06-22 Cilag Gmbh International Surgical stapler anvils with staple directing protrusions and tissue stability features
US10856870B2 (en) 2018-08-20 2020-12-08 Ethicon Llc Switching arrangements for motor powered articulatable surgical instruments
US10912559B2 (en) 2018-08-20 2021-02-09 Ethicon Llc Reinforced deformable anvil tip for surgical stapler anvil
US11083458B2 (en) 2018-08-20 2021-08-10 Cilag Gmbh International Powered surgical instruments with clutching arrangements to convert linear drive motions to rotary drive motions
US11207065B2 (en) 2018-08-20 2021-12-28 Cilag Gmbh International Method for fabricating surgical stapler anvils
US11401009B2 (en) * 2018-10-09 2022-08-02 Taylor Made Group, Llc Lateral arm actuator for extendable awning
US11109746B2 (en) 2018-10-10 2021-09-07 Titan Medical Inc. Instrument insertion system, method, and apparatus for performing medical procedures
CN111015626B (en) * 2018-10-10 2021-02-19 上银科技股份有限公司 Mechanical arm
KR102116119B1 (en) * 2018-10-22 2020-05-27 (주)미래컴퍼니 Master robot and control method thereof
EP3876860A1 (en) 2018-11-06 2021-09-15 Bono, Peter L. Robotic surgical system and method
CN109223182B (en) * 2018-11-21 2021-06-11 天津工业大学 Steel belt transmission mechanism for remote center movement of minimally invasive surgery robot
US11586106B2 (en) 2018-12-28 2023-02-21 Titan Medical Inc. Imaging apparatus having configurable stereoscopic perspective
US11717355B2 (en) 2019-01-29 2023-08-08 Covidien Lp Drive mechanisms for surgical instruments such as for use in robotic surgical systems
US11576733B2 (en) 2019-02-06 2023-02-14 Covidien Lp Robotic surgical assemblies including electrosurgical instruments having articulatable wrist assemblies
US11484372B2 (en) 2019-02-15 2022-11-01 Covidien Lp Articulation mechanisms for surgical instruments such as for use in robotic surgical systems
CN113423360B (en) * 2019-02-18 2023-12-08 柯惠Lp公司 Pitch joint estimator for mounting arm
WO2020172394A1 (en) 2019-02-22 2020-08-27 Auris Health, Inc. Surgical platform with motorized arms for adjustable arm supports
US11147553B2 (en) 2019-03-25 2021-10-19 Cilag Gmbh International Firing drive arrangements for surgical systems
US11172929B2 (en) 2019-03-25 2021-11-16 Cilag Gmbh International Articulation drive arrangements for surgical systems
US11147551B2 (en) 2019-03-25 2021-10-19 Cilag Gmbh International Firing drive arrangements for surgical systems
US11696761B2 (en) 2019-03-25 2023-07-11 Cilag Gmbh International Firing drive arrangements for surgical systems
US11253254B2 (en) 2019-04-30 2022-02-22 Cilag Gmbh International Shaft rotation actuator on a surgical instrument
US11471157B2 (en) 2019-04-30 2022-10-18 Cilag Gmbh International Articulation control mapping for a surgical instrument
US11452528B2 (en) 2019-04-30 2022-09-27 Cilag Gmbh International Articulation actuators for a surgical instrument
US11426251B2 (en) 2019-04-30 2022-08-30 Cilag Gmbh International Articulation directional lights on a surgical instrument
US11432816B2 (en) 2019-04-30 2022-09-06 Cilag Gmbh International Articulation pin for a surgical instrument
US11903581B2 (en) 2019-04-30 2024-02-20 Cilag Gmbh International Methods for stapling tissue using a surgical instrument
US11648009B2 (en) 2019-04-30 2023-05-16 Cilag Gmbh International Rotatable jaw tip for a surgical instrument
WO2020236942A1 (en) * 2019-05-20 2020-11-26 Bono Peter L Retracting tool for robotic surgery
US11684434B2 (en) 2019-06-28 2023-06-27 Cilag Gmbh International Surgical RFID assemblies for instrument operational setting control
US11241235B2 (en) 2019-06-28 2022-02-08 Cilag Gmbh International Method of using multiple RFID chips with a surgical assembly
US11426167B2 (en) 2019-06-28 2022-08-30 Cilag Gmbh International Mechanisms for proper anvil attachment surgical stapling head assembly
US11298132B2 (en) 2019-06-28 2022-04-12 Cilag GmbH Inlernational Staple cartridge including a honeycomb extension
US11246678B2 (en) 2019-06-28 2022-02-15 Cilag Gmbh International Surgical stapling system having a frangible RFID tag
US11259803B2 (en) 2019-06-28 2022-03-01 Cilag Gmbh International Surgical stapling system having an information encryption protocol
US11638587B2 (en) 2019-06-28 2023-05-02 Cilag Gmbh International RFID identification systems for surgical instruments
US11478241B2 (en) 2019-06-28 2022-10-25 Cilag Gmbh International Staple cartridge including projections
US11497492B2 (en) 2019-06-28 2022-11-15 Cilag Gmbh International Surgical instrument including an articulation lock
US11399837B2 (en) 2019-06-28 2022-08-02 Cilag Gmbh International Mechanisms for motor control adjustments of a motorized surgical instrument
US11051807B2 (en) 2019-06-28 2021-07-06 Cilag Gmbh International Packaging assembly including a particulate trap
US11771419B2 (en) 2019-06-28 2023-10-03 Cilag Gmbh International Packaging for a replaceable component of a surgical stapling system
US11291451B2 (en) 2019-06-28 2022-04-05 Cilag Gmbh International Surgical instrument with battery compatibility verification functionality
US11219455B2 (en) 2019-06-28 2022-01-11 Cilag Gmbh International Surgical instrument including a lockout key
US11553971B2 (en) 2019-06-28 2023-01-17 Cilag Gmbh International Surgical RFID assemblies for display and communication
US11660163B2 (en) 2019-06-28 2023-05-30 Cilag Gmbh International Surgical system with RFID tags for updating motor assembly parameters
US11627959B2 (en) 2019-06-28 2023-04-18 Cilag Gmbh International Surgical instruments including manual and powered system lockouts
US11298127B2 (en) 2019-06-28 2022-04-12 Cilag GmbH Interational Surgical stapling system having a lockout mechanism for an incompatible cartridge
US11464601B2 (en) 2019-06-28 2022-10-11 Cilag Gmbh International Surgical instrument comprising an RFID system for tracking a movable component
US11523822B2 (en) 2019-06-28 2022-12-13 Cilag Gmbh International Battery pack including a circuit interrupter
US11376098B2 (en) 2019-06-28 2022-07-05 Cilag Gmbh International Surgical instrument system comprising an RFID system
US11224497B2 (en) 2019-06-28 2022-01-18 Cilag Gmbh International Surgical systems with multiple RFID tags
CN111887906B (en) * 2019-09-10 2021-05-11 深圳市精锋医疗科技有限公司 Surgical robot and control method and control device for mechanical arm of surgical robot
CN110711032B (en) * 2019-10-21 2020-08-25 山东大学 Miniature surgical robot with rear-mounted motor
CN110934643B (en) * 2019-12-01 2020-09-11 邝伟腾 Tumor surgery robot instrument assembly with dual-drive structure
US11844520B2 (en) 2019-12-19 2023-12-19 Cilag Gmbh International Staple cartridge comprising driver retention members
US11529137B2 (en) 2019-12-19 2022-12-20 Cilag Gmbh International Staple cartridge comprising driver retention members
US11234698B2 (en) 2019-12-19 2022-02-01 Cilag Gmbh International Stapling system comprising a clamp lockout and a firing lockout
US11701111B2 (en) 2019-12-19 2023-07-18 Cilag Gmbh International Method for operating a surgical stapling instrument
US11607219B2 (en) 2019-12-19 2023-03-21 Cilag Gmbh International Staple cartridge comprising a detachable tissue cutting knife
US11464512B2 (en) 2019-12-19 2022-10-11 Cilag Gmbh International Staple cartridge comprising a curved deck surface
US11576672B2 (en) 2019-12-19 2023-02-14 Cilag Gmbh International Surgical instrument comprising a closure system including a closure member and an opening member driven by a drive screw
US11446029B2 (en) 2019-12-19 2022-09-20 Cilag Gmbh International Staple cartridge comprising projections extending from a curved deck surface
US11504122B2 (en) 2019-12-19 2022-11-22 Cilag Gmbh International Surgical instrument comprising a nested firing member
US11304696B2 (en) 2019-12-19 2022-04-19 Cilag Gmbh International Surgical instrument comprising a powered articulation system
US11911032B2 (en) 2019-12-19 2024-02-27 Cilag Gmbh International Staple cartridge comprising a seating cam
US11559304B2 (en) 2019-12-19 2023-01-24 Cilag Gmbh International Surgical instrument comprising a rapid closure mechanism
US11291447B2 (en) 2019-12-19 2022-04-05 Cilag Gmbh International Stapling instrument comprising independent jaw closing and staple firing systems
US11529139B2 (en) 2019-12-19 2022-12-20 Cilag Gmbh International Motor driven surgical instrument
US20210330402A1 (en) * 2020-04-24 2021-10-28 Orthosoft Ulc End effector for robotic shoulder arthroplasty
USD976401S1 (en) 2020-06-02 2023-01-24 Cilag Gmbh International Staple cartridge
USD975850S1 (en) 2020-06-02 2023-01-17 Cilag Gmbh International Staple cartridge
USD967421S1 (en) 2020-06-02 2022-10-18 Cilag Gmbh International Staple cartridge
USD975278S1 (en) 2020-06-02 2023-01-10 Cilag Gmbh International Staple cartridge
USD966512S1 (en) 2020-06-02 2022-10-11 Cilag Gmbh International Staple cartridge
USD975851S1 (en) 2020-06-02 2023-01-17 Cilag Gmbh International Staple cartridge
USD974560S1 (en) 2020-06-02 2023-01-03 Cilag Gmbh International Staple cartridge
US20210378771A1 (en) * 2020-06-04 2021-12-09 Intuitive Surgical Operations, Inc. Systems and methods for a compact remote center manipulator
CN111677833A (en) * 2020-06-08 2020-09-18 浙江理工大学 Power preposed wheel train type RCM mechanism
US11877818B2 (en) 2020-06-26 2024-01-23 Procept Biorobotics Corporation Integration of robotic arms with surgical probes
US11096753B1 (en) 2020-06-26 2021-08-24 Procept Biorobotics Corporation Systems and methods for defining and modifying range of motion of probe used in patient treatment
USD963851S1 (en) 2020-07-10 2022-09-13 Covidien Lp Port apparatus
US20220031351A1 (en) 2020-07-28 2022-02-03 Cilag Gmbh International Surgical instruments with differential articulation joint arrangements for accommodating flexible actuators
CN113967071B (en) 2020-10-23 2023-09-29 成都博恩思医学机器人有限公司 Control method and device for movement of mechanical arm of surgical robot along with operation bed
US11452526B2 (en) 2020-10-29 2022-09-27 Cilag Gmbh International Surgical instrument comprising a staged voltage regulation start-up system
US11517390B2 (en) 2020-10-29 2022-12-06 Cilag Gmbh International Surgical instrument comprising a limited travel switch
USD980425S1 (en) 2020-10-29 2023-03-07 Cilag Gmbh International Surgical instrument assembly
US11896217B2 (en) 2020-10-29 2024-02-13 Cilag Gmbh International Surgical instrument comprising an articulation lock
US11617577B2 (en) 2020-10-29 2023-04-04 Cilag Gmbh International Surgical instrument comprising a sensor configured to sense whether an articulation drive of the surgical instrument is actuatable
US11534259B2 (en) 2020-10-29 2022-12-27 Cilag Gmbh International Surgical instrument comprising an articulation indicator
US11717289B2 (en) 2020-10-29 2023-08-08 Cilag Gmbh International Surgical instrument comprising an indicator which indicates that an articulation drive is actuatable
US11844518B2 (en) 2020-10-29 2023-12-19 Cilag Gmbh International Method for operating a surgical instrument
US11779330B2 (en) 2020-10-29 2023-10-10 Cilag Gmbh International Surgical instrument comprising a jaw alignment system
USD1013170S1 (en) 2020-10-29 2024-01-30 Cilag Gmbh International Surgical instrument assembly
US11744581B2 (en) 2020-12-02 2023-09-05 Cilag Gmbh International Powered surgical instruments with multi-phase tissue treatment
US11890010B2 (en) 2020-12-02 2024-02-06 Cllag GmbH International Dual-sided reinforced reload for surgical instruments
US11653920B2 (en) 2020-12-02 2023-05-23 Cilag Gmbh International Powered surgical instruments with communication interfaces through sterile barrier
US11627960B2 (en) 2020-12-02 2023-04-18 Cilag Gmbh International Powered surgical instruments with smart reload with separately attachable exteriorly mounted wiring connections
US11678882B2 (en) 2020-12-02 2023-06-20 Cilag Gmbh International Surgical instruments with interactive features to remedy incidental sled movements
US11849943B2 (en) 2020-12-02 2023-12-26 Cilag Gmbh International Surgical instrument with cartridge release mechanisms
CN112539256A (en) * 2020-12-02 2021-03-23 深圳康诺思腾科技有限公司 Driving belt wheel lug and connection structure of driving belt wheel lug and driven unit
CN112682483A (en) * 2020-12-02 2021-04-20 深圳康诺思腾科技有限公司 Joint structure for transmission belt and related equipment
US11653915B2 (en) 2020-12-02 2023-05-23 Cilag Gmbh International Surgical instruments with sled location detection and adjustment features
US11737751B2 (en) 2020-12-02 2023-08-29 Cilag Gmbh International Devices and methods of managing energy dissipated within sterile barriers of surgical instrument housings
US11730473B2 (en) 2021-02-26 2023-08-22 Cilag Gmbh International Monitoring of manufacturing life-cycle
US11812964B2 (en) 2021-02-26 2023-11-14 Cilag Gmbh International Staple cartridge comprising a power management circuit
US11751869B2 (en) 2021-02-26 2023-09-12 Cilag Gmbh International Monitoring of multiple sensors over time to detect moving characteristics of tissue
US11744583B2 (en) 2021-02-26 2023-09-05 Cilag Gmbh International Distal communication array to tune frequency of RF systems
US11793514B2 (en) 2021-02-26 2023-10-24 Cilag Gmbh International Staple cartridge comprising sensor array which may be embedded in cartridge body
US11696757B2 (en) 2021-02-26 2023-07-11 Cilag Gmbh International Monitoring of internal systems to detect and track cartridge motion status
US11701113B2 (en) 2021-02-26 2023-07-18 Cilag Gmbh International Stapling instrument comprising a separate power antenna and a data transfer antenna
US11749877B2 (en) 2021-02-26 2023-09-05 Cilag Gmbh International Stapling instrument comprising a signal antenna
US11723657B2 (en) 2021-02-26 2023-08-15 Cilag Gmbh International Adjustable communication based on available bandwidth and power capacity
US11925349B2 (en) 2021-02-26 2024-03-12 Cilag Gmbh International Adjustment to transfer parameters to improve available power
US11826042B2 (en) 2021-03-22 2023-11-28 Cilag Gmbh International Surgical instrument comprising a firing drive including a selectable leverage mechanism
US11826012B2 (en) 2021-03-22 2023-11-28 Cilag Gmbh International Stapling instrument comprising a pulsed motor-driven firing rack
US11723658B2 (en) 2021-03-22 2023-08-15 Cilag Gmbh International Staple cartridge comprising a firing lockout
US11737749B2 (en) 2021-03-22 2023-08-29 Cilag Gmbh International Surgical stapling instrument comprising a retraction system
US11806011B2 (en) 2021-03-22 2023-11-07 Cilag Gmbh International Stapling instrument comprising tissue compression systems
US11717291B2 (en) 2021-03-22 2023-08-08 Cilag Gmbh International Staple cartridge comprising staples configured to apply different tissue compression
US11759202B2 (en) 2021-03-22 2023-09-19 Cilag Gmbh International Staple cartridge comprising an implantable layer
US11832816B2 (en) 2021-03-24 2023-12-05 Cilag Gmbh International Surgical stapling assembly comprising nonplanar staples and planar staples
US11896219B2 (en) 2021-03-24 2024-02-13 Cilag Gmbh International Mating features between drivers and underside of a cartridge deck
US11903582B2 (en) 2021-03-24 2024-02-20 Cilag Gmbh International Leveraging surfaces for cartridge installation
US11849945B2 (en) 2021-03-24 2023-12-26 Cilag Gmbh International Rotary-driven surgical stapling assembly comprising eccentrically driven firing member
US11849944B2 (en) 2021-03-24 2023-12-26 Cilag Gmbh International Drivers for fastener cartridge assemblies having rotary drive screws
US11857183B2 (en) 2021-03-24 2024-01-02 Cilag Gmbh International Stapling assembly components having metal substrates and plastic bodies
US11786239B2 (en) 2021-03-24 2023-10-17 Cilag Gmbh International Surgical instrument articulation joint arrangements comprising multiple moving linkage features
US11793516B2 (en) 2021-03-24 2023-10-24 Cilag Gmbh International Surgical staple cartridge comprising longitudinal support beam
US11786243B2 (en) 2021-03-24 2023-10-17 Cilag Gmbh International Firing members having flexible portions for adapting to a load during a surgical firing stroke
US11896218B2 (en) 2021-03-24 2024-02-13 Cilag Gmbh International Method of using a powered stapling device
US11744603B2 (en) 2021-03-24 2023-09-05 Cilag Gmbh International Multi-axis pivot joints for surgical instruments and methods for manufacturing same
US20220378424A1 (en) 2021-05-28 2022-12-01 Cilag Gmbh International Stapling instrument comprising a firing lockout
US11877745B2 (en) 2021-10-18 2024-01-23 Cilag Gmbh International Surgical stapling assembly having longitudinally-repeating staple leg clusters
WO2023079521A1 (en) * 2021-11-08 2023-05-11 Covidien Lp Linear transmission mechanism for actuating a prismatic joint of a surgical robot
CN114224500B (en) * 2021-11-11 2023-08-04 深圳市精锋医疗科技股份有限公司 Manipulator, slave operation device and surgical robot
JP2023103734A (en) * 2022-01-14 2023-07-27 キヤノン株式会社 Continuum robot system
US20230372035A1 (en) * 2022-05-20 2023-11-23 Standard Bariatrics Inc. Surgical instruments for robotic-assisted surgery and methods of using the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6371952B1 (en) * 1996-05-20 2002-04-16 Intuitive Surgical, Inc. Articulated surgical instrument for performing minimally invasive surgery with enhanced dexterity and sensitivity
US6394998B1 (en) * 1999-01-22 2002-05-28 Intuitive Surgical, Inc. Surgical tools for use in minimally invasive telesurgical applications
US6699235B2 (en) * 2001-06-29 2004-03-02 Intuitive Surgical, Inc. Platform link wrist mechanism

Family Cites Families (131)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586731A (en) 1897-07-20 Churn
US369023A (en) 1887-08-30 Driving-belt fastener
US669393A (en) 1900-12-03 1901-03-05 Henry Clay Jent Churn.
US1597152A (en) * 1923-11-05 1926-08-24 Ternstedt Mfg Co Window regulator
US1515335A (en) * 1924-03-03 1924-11-11 George B Bosco Form clamp
US1700468A (en) * 1925-10-12 1929-01-29 Marion Steam Shovel Co Dipper-tripping device
US2027275A (en) * 1934-08-27 1936-01-07 Edwin E Foster Mechanical movement
US2331382A (en) 1939-11-06 1943-10-12 Francis E Vaughan Drafting machine brake
US2815697A (en) 1950-06-06 1957-12-10 Saunders-Singer Arthur Edward Microscope manipulators or dissection manipulators
US3011034A (en) * 1957-03-20 1961-11-28 Gen Motors Corp Linear scale timer
US3025647A (en) * 1960-01-12 1962-03-20 Harvey H Moody Two-way positive cable drive mechanism
US3193633A (en) * 1962-07-02 1965-07-06 Gen Electric Racking mechanism including a differential pulley system
US3463329A (en) 1967-05-18 1969-08-26 Sylvania Electric Prod Material transfer device with parallel link frame
CH482439A (en) 1968-02-20 1969-12-15 Contraves Ag Observation device
US3500692A (en) * 1968-07-25 1970-03-17 Decitek Inc Cable actuated device converting rotary to linear motion
US3739649A (en) * 1970-10-20 1973-06-19 Csi Liquidating Corp Linear position converter
US3695215A (en) * 1971-10-29 1972-10-03 Gen Motors Corp Transmission gearshift indicator
US3736056A (en) 1972-01-27 1973-05-29 Dyk Research Corp Van Apparatus for imparting intermittent rotation to a first member in rotating registry with a second member
BE795860A (en) * 1972-02-25 1973-08-23 Xerox Corp HIGH SPEED PRINTING MACHINES WITH TRAVEL COMPENSATION TROLLEY CABLE
US3813843A (en) * 1972-06-09 1974-06-04 Wehr Corp Method and apparatus for rolling cut filter pad
US3954282A (en) * 1974-07-15 1976-05-04 Hege Advanced Systems Corporation Variable speed reciprocating lever drive mechanism
US3976206A (en) * 1975-07-16 1976-08-24 Flatau Carl R Articulated master slave manipulator
DE2714695C3 (en) * 1977-04-01 1979-09-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fixation device for a patient
DE2819976C2 (en) 1978-05-08 1984-03-08 Fritz 5882 Meinerzhagen Sträter Articulated arm with wrapped parallelogram function
JPS556046A (en) * 1978-06-27 1980-01-17 Hiroshi Sukawa Swing-linear motion combination type actuator
JPS594266B2 (en) 1978-07-28 1984-01-28 元田電子工業株式会社 Advanced control robot
FR2460762A1 (en) 1979-07-12 1981-01-30 Technigaz Tool orienting control system - effects positioning by deforming articulated parallelogram on carriage supporting tool
US4486183A (en) * 1980-06-30 1984-12-04 The Gates Rubber Company Torsionally elastic power transmitting device and drive
US4362525A (en) * 1980-08-08 1982-12-07 Dyneer Corporation Belt tensioner construction
US4396919A (en) * 1981-04-06 1983-08-02 General Dynamics, Pomona Division Differential drive pedestal gimbal
FR2512909B1 (en) * 1981-09-15 1987-02-20 Renault RECTILINEAR PULLEY AND BELT TRANSMISSION MECHANISM
DE3211688C2 (en) 1982-03-30 1986-10-09 Binder, Karl-Franz, 8077 Reichertshofen Industrial robots for manufacturing and / or assembly purposes
JPH056604Y2 (en) * 1985-03-18 1993-02-19
FR2593106B1 (en) 1986-01-22 1990-03-30 Royer Jacques DEVICE FOR MOVING A TOOL OR THE LIKE OVERHEAD, ESPECIALLY AROUND AN OBJECT.
US4696501A (en) 1986-01-30 1987-09-29 Honeywell Inc. Robot gripper
EP0239409A1 (en) 1986-03-28 1987-09-30 Life Technology Research Foundation Robot for surgical operation
US5078140A (en) * 1986-05-08 1992-01-07 Kwoh Yik S Imaging device - aided robotic stereotaxis system
US4728252A (en) * 1986-08-22 1988-03-01 Lam Research Corporation Wafer transport mechanism
JPS63278674A (en) 1987-05-11 1988-11-16 Shinko Electric Co Ltd Offset mechanism for rotating center
US4897015A (en) * 1987-05-15 1990-01-30 Ade Corporation Rotary to linear motion robot arm
US4921393A (en) 1988-03-09 1990-05-01 Sri International Articulatable structure with adjustable end-point compliance
US4903536A (en) * 1988-04-21 1990-02-27 Massachusetts Institute Of Technology Compact cable transmission with cable differential
US5149057A (en) * 1989-03-09 1992-09-22 Baker Hughes Incorporated Tape drive with self-expanding coils for sludge collector
IT1233340B (en) * 1989-05-17 1992-03-27 Oto Mills Spa LAUNCHING DEVICE FOR OPERATING MACHINES OR TOOLS OPERATING ON CONTINUOUS FLOW LINES IN PARTICULAR FOR THE MANUFACTURE OF STEEL PRODUCTS
US5103263A (en) 1989-05-23 1992-04-07 Delphax Systems Powder transport, fusing and imaging apparatus
US5257998A (en) 1989-09-20 1993-11-02 Mitaka Kohki Co., Ltd. Medical three-dimensional locating apparatus
US5273039A (en) 1989-10-16 1993-12-28 Olympus Optical Co., Ltd. Surgical microscope apparatus having a function to display coordinates of observation point
PT97705A (en) 1990-07-20 1993-07-30 Ibm PERSONAL COMPUTER WITH PROTECTION SHIELD OF INPUT / OUTPUT SIGNALS
US5060532A (en) 1990-08-23 1991-10-29 Barker Sidney L Universal joint boom
US5074539A (en) * 1990-09-11 1991-12-24 Ward Holding Company, Inc. Feeding sheets of corrugated paperboard
FR2668359B1 (en) * 1990-10-24 1998-02-20 Gen Electric Cgr MAMMOGRAPH PROVIDED WITH A PERFECTED NEEDLE HOLDER.
US5209747A (en) 1990-12-13 1993-05-11 Knoepfler Dennis J Adjustable angle medical forceps
US5129911A (en) * 1991-03-11 1992-07-14 Siczek Bernard W Orbital aiming device
US5217453A (en) 1991-03-18 1993-06-08 Wilk Peter J Automated surgical system and apparatus
US5217003A (en) 1991-03-18 1993-06-08 Wilk Peter J Automated surgical system and apparatus
US5339799A (en) 1991-04-23 1994-08-23 Olympus Optical Co., Ltd. Medical system for reproducing a state of contact of the treatment section in the operation unit
US5417210A (en) 1992-05-27 1995-05-23 International Business Machines Corporation System and method for augmentation of endoscopic surgery
US5279309A (en) 1991-06-13 1994-01-18 International Business Machines Corporation Signaling device and method for monitoring positions in a surgical operation
JP3030667B2 (en) * 1991-07-29 2000-04-10 東京エレクトロン株式会社 Transfer device
US5184601A (en) 1991-08-05 1993-02-09 Putman John M Endoscope stabilizer
US5222409A (en) 1991-09-25 1993-06-29 Dalakian Sergei V Industrial robot arms
ATE238140T1 (en) 1992-01-21 2003-05-15 Stanford Res Inst Int SURGICAL SYSTEM
US5203247A (en) * 1992-03-27 1993-04-20 Arcy John W D Vertical mitering band saw
US5524180A (en) 1992-08-10 1996-06-04 Computer Motion, Inc. Automated endoscope system for optimal positioning
US5657429A (en) 1992-08-10 1997-08-12 Computer Motion, Inc. Automated endoscope system optimal positioning
US5762458A (en) 1996-02-20 1998-06-09 Computer Motion, Inc. Method and apparatus for performing minimally invasive cardiac procedures
JP3273084B2 (en) 1992-08-20 2002-04-08 オリンパス光学工業株式会社 Medical device holder device
US5397323A (en) 1992-10-30 1995-03-14 International Business Machines Corporation Remote center-of-motion robot for surgery
IT1260295B (en) * 1992-11-13 1996-04-03 Moreno Minghetti HIGH PRODUCTION MACHINE FOR THERMOFORMING BY BLOWING CONTAINERS OR OTHER CABLES, IN THERMOPLASTIC MATERIAL.
US5329800A (en) * 1993-02-11 1994-07-19 Service Tool International, Inc. Conversion system having conveyor slide assembly for multiple belts
US6406472B1 (en) 1993-05-14 2002-06-18 Sri International, Inc. Remote center positioner
WO1994026167A1 (en) 1993-05-14 1994-11-24 Sri International Remote center positioner
US5339929A (en) * 1993-07-02 1994-08-23 Tsoung Ren Chern Brake assembly for a bicycle
AU7468494A (en) 1993-07-07 1995-02-06 Cornelius Borst Robotic system for close inspection and remote treatment of moving parts
US5343385A (en) 1993-08-17 1994-08-30 International Business Machines Corporation Interference-free insertion of a solid body into a cavity
JPH0759788A (en) 1993-08-25 1995-03-07 Olympus Optical Co Ltd Snipping force feedback forceps device
JP3476878B2 (en) 1993-11-15 2003-12-10 オリンパス株式会社 Surgical manipulator
US5876325A (en) * 1993-11-02 1999-03-02 Olympus Optical Co., Ltd. Surgical manipulation system
US5479929A (en) 1994-06-27 1996-01-02 Acuson Corporation Drive system with a multiturn rotary stop
US5599268A (en) * 1994-07-20 1997-02-04 Tetra Laval Holdings & Finance S.A. Belt driven linear transport apparatus for packaging machine
US5427581A (en) * 1994-08-12 1995-06-27 Belt Technologies, Inc. Independently steerable idler pulley
EP0737636B1 (en) * 1995-03-31 1998-01-14 TAPEMATIC S.p.A. Unit for individually feeding brochures to a pick-up station and feeding method carried into effect by said unit
US5806246A (en) * 1995-02-28 1998-09-15 Nippon Cable System Inc. Powered sliding-door system and actuating devices for the same
US6428266B1 (en) 1995-07-10 2002-08-06 Brooks Automation, Inc. Direct driven robot
US5794487A (en) 1995-07-10 1998-08-18 Smart Machines Drive system for a robotic arm
US5682795A (en) * 1995-07-10 1997-11-04 Smart Machines Robotic joint using metal bands
US5710870A (en) 1995-09-07 1998-01-20 California Institute Of Technology Decoupled six degree-of-freedom robot manipulator
US5855583A (en) 1996-02-20 1999-01-05 Computer Motion, Inc. Method and apparatus for performing minimally invasive cardiac procedures
US6786896B1 (en) 1997-09-19 2004-09-07 Massachusetts Institute Of Technology Robotic apparatus
US6132368A (en) 1996-12-12 2000-10-17 Intuitive Surgical, Inc. Multi-component telepresence system and method
US6116197A (en) * 1996-12-19 2000-09-12 Honda Giken Kogyo Kabushiki Kaisha Vertical internal combustion engine
JP3852723B2 (en) * 1997-09-12 2006-12-06 本田技研工業株式会社 Vertical internal combustion engine
US6692485B1 (en) * 1998-02-24 2004-02-17 Endovia Medical, Inc. Articulated apparatus for telemanipulator system
JPH11327059A (en) * 1998-05-13 1999-11-26 Fuji Photo Optical Co Ltd Driving pulley for image reader
US6309403B1 (en) * 1998-06-01 2001-10-30 Board Of Trustees Operating Michigan State University Dexterous articulated linkage for surgical applications
WO2000007503A1 (en) 1998-08-04 2000-02-17 Intuitive Surgical, Inc. Manipulator positioning linkage for robotic surgery
US6659939B2 (en) 1998-11-20 2003-12-09 Intuitive Surgical, Inc. Cooperative minimally invasive telesurgical system
US6451027B1 (en) 1998-12-16 2002-09-17 Intuitive Surgical, Inc. Devices and methods for moving an image capture device in telesurgical systems
US6324934B1 (en) * 1999-03-01 2001-12-04 Creative Design Corporation Robot arm
US6594552B1 (en) 1999-04-07 2003-07-15 Intuitive Surgical, Inc. Grip strength with tactile feedback for robotic surgery
FR2792626B1 (en) * 1999-04-23 2001-06-15 Mediterranee Const Ind HANDRAINING DEVICE FOR AN ACCELERATED WALKING SIDEWALK
US6167686B1 (en) * 1999-07-30 2001-01-02 Deere & Company Tensioner for header of a harvester
US6788018B1 (en) * 1999-08-03 2004-09-07 Intuitive Surgical, Inc. Ceiling and floor mounted surgical robot set-up arms
US7594912B2 (en) 2004-09-30 2009-09-29 Intuitive Surgical, Inc. Offset remote center manipulator for robotic surgery
US6702805B1 (en) 1999-11-12 2004-03-09 Microdexterity Systems, Inc. Manipulator
US6840938B1 (en) * 2000-12-29 2005-01-11 Intuitive Surgical, Inc. Bipolar cauterizing instrument
WO2002062199A2 (en) 2001-01-16 2002-08-15 Microdexterity Systems, Inc. Surgical manipulator
US20030135204A1 (en) * 2001-02-15 2003-07-17 Endo Via Medical, Inc. Robotically controlled medical instrument with a flexible section
WO2003006216A1 (en) * 2001-07-13 2003-01-23 Brooks Automation, Inc. Substrate transport apparatus with multiple independent end effectors
CA2475239C (en) * 2002-02-06 2008-07-29 The Johns Hopkins University Remote center of motion robotic system and method
JP3937067B2 (en) * 2002-03-18 2007-06-27 Smc株式会社 Electric actuator and method of assembling the same
US6969385B2 (en) * 2002-05-01 2005-11-29 Manuel Ricardo Moreyra Wrist with decoupled motion transmission
US7350334B2 (en) * 2002-08-20 2008-04-01 Intier Automotive Closures Inc. Window regulator assembly
US7331967B2 (en) * 2002-09-09 2008-02-19 Hansen Medical, Inc. Surgical instrument coupling mechanism
JP3912251B2 (en) 2002-10-02 2007-05-09 株式会社日立製作所 manipulator
US6871643B2 (en) * 2002-10-18 2005-03-29 Hoyt Usa, Inc. Eccentric elements for a compound archery bow
FR2845889B1 (en) 2002-10-22 2005-02-11 Centre Nat Rech Scient SURGICAL ROBOT FOR ORIENTATION AND POSITIONING A SURGICAL INSTRUMENT CARRYING A SURGICAL TERMINAL TOOL
GB2417090A (en) 2003-04-28 2006-02-15 Stephen James Crampton CMM arm with exoskeleton
JP4791967B2 (en) * 2003-05-21 2011-10-12 ザ・ジョンズ・ホプキンス・ユニバーシティー Devices, systems and methods for minimally invasive surgery of mammalian throat and other parts of body
FR2866826B1 (en) * 2004-02-26 2006-08-04 Commissariat Energie Atomique TELEMANIPULATION ARM IN TWO PARTS
US10646292B2 (en) 2004-09-30 2020-05-12 Intuitive Surgical Operations, Inc. Electro-mechanical strap stack in robotic arms
US9261172B2 (en) 2004-09-30 2016-02-16 Intuitive Surgical Operations, Inc. Multi-ply strap drive trains for surgical robotic arms
ATE543455T1 (en) * 2005-03-29 2012-02-15 Toshiba Kk MANIPULATOR
US7955322B2 (en) 2005-12-20 2011-06-07 Intuitive Surgical Operations, Inc. Wireless communication in a robotic surgical system
US7736254B2 (en) * 2006-10-12 2010-06-15 Intuitive Surgical Operations, Inc. Compact cable tension tender device
US7935130B2 (en) * 2006-11-16 2011-05-03 Intuitive Surgical Operations, Inc. Two-piece end-effectors for robotic surgical tools
US20090229388A1 (en) * 2008-03-17 2009-09-17 Lee Jeongyeop Cable connecting apparatus of controller for air conditoner in vehicle
US7644906B2 (en) * 2008-03-19 2010-01-12 9182-9622 Quebec Inc. Apparatus for winding an elongate strap onto a winch
CN102281831B (en) * 2008-12-23 2014-08-13 马科外科公司 Transmission with first and second transmission elements
JP5499647B2 (en) * 2009-11-10 2014-05-21 株式会社安川電機 Robot and robot system
JP7059788B2 (en) 2018-05-11 2022-04-26 株式会社大林組 Wood structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6371952B1 (en) * 1996-05-20 2002-04-16 Intuitive Surgical, Inc. Articulated surgical instrument for performing minimally invasive surgery with enhanced dexterity and sensitivity
US7316681B2 (en) * 1996-05-20 2008-01-08 Intuitive Surgical, Inc Articulated surgical instrument for performing minimally invasive surgery with enhanced dexterity and sensitivity
US6394998B1 (en) * 1999-01-22 2002-05-28 Intuitive Surgical, Inc. Surgical tools for use in minimally invasive telesurgical applications
US6699235B2 (en) * 2001-06-29 2004-03-02 Intuitive Surgical, Inc. Platform link wrist mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104108107A (en) * 2014-07-04 2014-10-22 合肥鑫众机械有限公司 Mechanical arm installation structure

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