US20140371526A1 - Slotted clear cannula - Google Patents

Slotted clear cannula Download PDF

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Publication number
US20140371526A1
US20140371526A1 US14/477,478 US201414477478A US2014371526A1 US 20140371526 A1 US20140371526 A1 US 20140371526A1 US 201414477478 A US201414477478 A US 201414477478A US 2014371526 A1 US2014371526 A1 US 2014371526A1
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US
United States
Prior art keywords
cannula
release
tubular body
elongated cannula
endoscope
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US14/477,478
Inventor
Romi Mirza
Ather Mirza
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A M Surgical Inc
Original Assignee
A M 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
Priority claimed from US12/400,485 external-priority patent/US8821383B2/en
Application filed by A M Surgical Inc filed Critical A M Surgical Inc
Priority to US14/477,478 priority Critical patent/US20140371526A1/en
Assigned to A.M. SURGICAL, INC. reassignment A.M. SURGICAL, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MIRZA, ATHER, MIRZA, ROMI
Publication of US20140371526A1 publication Critical patent/US20140371526A1/en
Priority to US15/334,784 priority patent/US10849644B2/en
Priority to US17/107,923 priority patent/US20210077139A1/en
Abandoned legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320016Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/320036Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes adapted for use within the carpal tunnel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • A61B1/0008Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00087Tools
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00147Holding or positioning arrangements
    • A61B1/00154Holding or positioning arrangements using guiding arrangements for insertion
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/012Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
    • A61B1/018Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/313Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes
    • A61B1/3132Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes for laparoscopy
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/32Devices for opening or enlarging the visual field, e.g. of a tube of the body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320016Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421Cannulas
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421Cannulas
    • A61B17/3423Access ports, e.g. toroid shape introducers for instruments or hands
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1659Surgical rasps, files, planes, or scrapers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1686Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hand or wrist
    • 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
    • A61B90/06Measuring instruments not otherwise provided for
    • A61B2090/062Measuring instruments not otherwise provided for penetration depth
    • 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

Definitions

  • the present invention relates to medical devices and, in particular, to a slotted cannula for endoscopic operations.
  • Endoscopic surgery is a minimally invasive surgical procedure that is performed through small incisions or natural body openings.
  • An endoscopic procedure typically involves use of specialized devices and remote-control manipulation of instruments with indirect observation of the surgical field through an endoscope or similar device. Comparing to open surgery, endoscopic surgery may result in shorter hospital stays, or allow outpatient treatment.
  • endoscopic surgery employing the use of endoscopic devices has found widespread application.
  • endoscopic procedures have been successfully used in effectuating carpal tunnel release with specially designed endoscopic instruments, such as those described in U.S. Pat. No. 5,366,465, U.S. Pat. No. 5,578,051, U.S. Pat. No. 5,968,061, and U.S. Pat. No. 7,041,115, all of which are incorporated herein by reference.
  • endoscopic instruments such as those described in U.S. Pat. No. 5,366,465, U.S. Pat. No. 5,578,051, U.S. Pat. No. 5,968,061, and U.S. Pat. No. 7,041,115, all of which are incorporated herein by reference.
  • the cannula has a tubular body having a distal end and a proximate end, an open slot extending longitudinally from the beginning of the proximate end to the proximity of the distal end, and a pair of wings integrally formed on the proximate end.
  • the tubular body is made from a transparent material and has an inner diameter large enough to accommodate an endoscope.
  • the endoscopic surgical procedure is a procedure selected from the group consisting of carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compartments of the leg, forearm fascia release for fascial compartment syndrome, and release of fascial compartments in the upper and lower extremity.
  • the cannula is a slotted transparent cannula.
  • the pair of wings are formed on opposing edges of the slot and extend radially from the tubular body.
  • the tubular body has an inner diameter in the range of 1-10 mm, preferably 2-8 mm, and more preferably 2-5 mm
  • the tubular body has an outer diameter in the range of 2-12 mm, preferably 4-10 mm, and more preferably 4-7 mm.
  • the tubular body has a length in the range of 5-25 cm, preferably 12-18 cm, and more preferably 10-15 cm.
  • the open slot has a width in the range of 1-6 mm, preferably 1.5-5 mm, and more preferably 2-4 mm.
  • the tubular body is made from a transparent plastic material.
  • the transparent plastic material is selected from the group consisting of polyacrylate, polycarbonate, polystyrene, glycol modified polyethylene terephthalate, and cellulose acetate butyrate.
  • the tubular body further comprises one or more observation holes.
  • the instrument kit comprises a transparent cannula guide member including a longitudinal bore having open proximal and distal ends and an open slot extending along the length thereof communicating with the open ends, and an elongated insertion member that is slidably receivable within the cannula guide member and is configured so that at least portions thereof conform with the open distal end and the open slot of the guide member to form a smooth exterior surface in combination therewith.
  • the endoscopic surgical procedure is a procedure selected from the group consisting of carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compaitinents of the leg, forearm fascia release for fascial compartment syndrome, and release of fascial compartments in the upper and lower extremity.
  • the instrument kit further comprises an endoscope sized for insertion into the cannula guide member for direct visualization of an operative site.
  • the endoscope is capable of carrying a cutting instrument at a leading end.
  • the instrument kit further includes a cutting instrument mountable to the leading end of the endoscope.
  • the instrument kit further includes a second endoscope with a cutting instrument mounted at a leading end of the second endoscope.
  • the second endoscope is insertable into the cannula guide member such that the cutting instrument protrudes through the open slot in the cannula guide member.
  • the instrument kit further includes a depth gauge mountable to a leading end of the endoscope.
  • the instrument kit further includes a rasp member sized for insertion into the cannula guide member.
  • the instrument kit further includes a locking device capable of locking the endoscope and the cannula guide member into mutually fixed positions.
  • the instrument kit further includes a stop device mountable on the cannula guide member to prevent excessive penetration at a surgical site by the cutting instrument.
  • the instrument kit further includes a curved dissector.
  • the transparent cannula guide member is made from a transparent plastic material selected from the group consisting of polyacrylate, polycarbonate, polystyrene, glycol modified polyethylene terephthalate, and cellulose acetate butyrate.
  • Another aspect of the present invention relates to a method for implementing a uniportal endoscopic surgical procedure using the slotted transparent cannula of the present invention.
  • the endoscopic surgical procedure is a procedure selected from the group consisting of carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compartments of the leg, forearm fascia release for fascial compartment syndrome, and release of fascial compartments in the upper and lower extremity.
  • FIG. 1 illustrates a three-dimentional view of an embodiment of a slotted transparent cannula.
  • FIG. 2 illustrates a top view of the slotted transparent cannula.
  • FIG. 3 illustrates a sectional view taken along line 3 - 3 in FIG. 2 .
  • FIG. 4 illustrates a longitudinal side view of the leading end of an obturator adapted to be inserted into the slotted cannula of FIG. 1 .
  • FIG. 5 illustrates a top view of the leading end of the obturator.
  • FIG. 6 illustrates a longitudinal side view of the endoscopic instrument, showing the scope and cutting device mounted on the latter inserted into the slotted cannula.
  • FIG. 7 illustrates a top view of the leading section of the endoscopic instrument shown in FIG. 6 .
  • FIG. 8 illustrates, on a somewhat enlarged scale, a sectional view of the encircled portion A of the instrument of FIG. 6 .
  • FIG. 9 illustrates a side view of the locking device.
  • FIG. 10 illustrates a tubular member mounting a surgical knife being inserted into the locking device.
  • FIG. 11 illustrates the assembling of the components including an endoscope.
  • FIG. 12 also illustrates the assembling of the components including an endoscope.
  • FIG. 13 illustrates the tubular member mounting a depth gauge.
  • FIG. 14 illustrates the tubular member mounting the depth gauge connected to the locking device and having a stop device for limiting the extent of insertion into an incision formed in a patient.
  • FIG. 15 is a sectional view taken along line 15 - 15 in FIG. 14 .
  • FIG. 16 illustrates a rasp member adapted to scrape a curtain of tissue at an operating site.
  • the cannula 10 has a tubular body 11 with a proximate end 12 and a distal end 13 , a slot 14 extending longitudinally from the beginning of the proximate end 12 to the proximity of the distal end 13 , and a flange and a pair of wings 15 and 16 integrally formed on the proximate end 12 .
  • the slot 14 starts at the very beginning of the proximate end of the tubular body 11 so that an instrument with a matching structure, such as a protrusion, can be inserted into the cannula 10 from the proximate end of the tubular body.
  • the slot 14 ends at a short distance from the distal end of the tubular body 11 to prevent excessive advancement of cannual mount surgical tools, such as obturators or blades at the surgical site.
  • the tubular body 11 is made from a transparent material and has an inner diameter large enough for an endoscope to pass through.
  • the wings 15 and 16 are formed on the opposing edges of the slot 14 and extend radially from the tubular body 11 .
  • the tubular body 11 of the cannula 10 is circular in cross-sectional configuration and has a central aperture 17 to facilitate passage of an endoscope or other surgical devices.
  • the central aperture 17 is sized to allow passage of the necessary surgical instruments, such as obturators and endoscopes, with sufficient clearance.
  • the central aperture has a diameter of 1-10 mm, preferably 2-8 mm, and more preferably 2-5 mm While FIG. 2 shows a substantially circular central aperture 17 , the central aperture can have a cross-section of any shape, so long as it allows the passage of an endoscope of other surgical devices.
  • the outside diameter of the tubular body 11 varies with application but is typically in the range of 2-12 mm, preferably 4-10 mm, and more preferably 4-7 mm.
  • the length of the tubular body 11 also varies with application.
  • the tubular body 11 would have a length of about 5-25 cm; preferably, 12-18 cm; and more preferably, 10-15 cm for carpal tunnel release and cubital tunnel release.
  • the slot 14 allows a controlled movement of a passage of a surgical blade through the central aperture 17 .
  • the slot 14 has a width in the range of 1-6 mm, preferably 1.5-5 mm, and more preferably 2-4 mm.
  • the wings 15 and 16 are integral parts of the tubular body 11 and extend outward radially to provide holding points for the cannula 10 .
  • the wings 15 and 16 may be replaced with integrally formed outwardly extending curvilinear flange portions.
  • the flange portions are curved to match the curvature of the proximate end of an obturator.
  • the distal end of the cannula 10 may also be configured to form an integral obturator and dissector, thereby eliminating separate components.
  • the cannula 10 is made from a transparent plastic material.
  • transparent plastic material refers to a polymer material that has a light transmission rate equal to, or greater than, 80%.
  • the transparent plastic material has a light transmission rate equal to, or greater than, 90%.
  • the transparency of the cannula wall makes it possible to observe the anatomical structure around the insertion path with an endoscope.
  • the plastic cannula is lightweight and can be made by injection molding to reduce cost.
  • the transparent plastics used in the present invention should have good impact resistance and abrasion resistance.
  • the transparent plastics may be coated with a cover layer such as alumina or diamond like carbon, to improve abrasion resistance.
  • the tubular body may further contain observation holes for better identification of the surrounding tissue. In one embodiment, the observation holes are oblong openings on the opposite side of slot 14 .
  • transparent plastics include, but are not limited to, polyacrylate such as polymethlamethacrylate, polycarbonate, polystyrene, glycol modified polyethylene terephthalate, and cellulose acetate butyrate.
  • Transparent plastics are commercially available under the tradenames of Acrystex.®, NAS.®, Empera.®, Kibiton.®, Zylar.®, Zytel.®, etc.).
  • the transparent cannula 10 can be used in combination with a variety of surgical instruments. Although these instruments have been shown in the Mirza U.S. Pat. Nos. 5,366,465, 5,578,051, 5,968,061 and 7,041,115, some of these instruments are described in detail herein for purposes of clarity the utility of the transparent cannula 10 of the present invention.
  • FIGS. 4 and 5 show an obturator 28 that is adapted to be slidably received within the cannula body 11 , and presents a smooth outer surface through the intermediary of an axial, upstanding rib portion 30 which is engageable in close conformance within the longitudinal slot 14 of the cannula upon insertion therein.
  • the distal end of the obturator 28 is a tapered tip portion 32 which is bent upwardly in a direction towards the longitudinal rib to impart to the tip a somewhat upward curvature.
  • FIGS. 6-8 show an arthroscope 22 that is adapted to be slidably received within the cannula 10 .
  • the arthroscope 22 includes a suitable knurled knob 40 having an internal threaded portion 42 in a cylindrical extension 44 and a tapered bore 46 for receiving a tubular knife or cutting blade holder 48 .
  • the blade or knife holder 48 is adapted to receive a scope 50 of cylindrical configuration extending therethrough and lock the latter within the blade holder by simply axially displacing the knurled nut 40 through threaded interengagement between the internal thread 42 of the nut and an external thread 52 on the blade holder.
  • FIGS. 9-12 show a locking device 60 that can be used to lock the blade holder and the transparent cannula 10 into mutually fixed positions.
  • the locking device 60 includes a rectangular housing structure 62 with a longitudinal through bore 64 for receiving a tubular element supporting a gauge or cutting blade and for receiving a rod-like endoscope.
  • a pivotable lever 66 mounted on the housing structure 62 is adapted to be swung between an opened position to a locked position so as to impart a clamping action to a tubular element extending through bore 64 by means of a camming structure.
  • a cutting instrument such as a surgical knife 70 , which may be disposable, as shown in FIG. 10 , is mounted at the leading end 72 of an elongate hollow tubular member 74 towards the opposite end of which the latter includes a hub portion 76 and a ring 78 spaced at a short distance therefrom, which forms a spacer defining the length of the tubular member 74 extending towards the knife blade 70 , or any cutting or rasp instrument for removing tissue, such as a “curtain” of tissue, which is provided instead of the knife blade 70 .
  • the hub end portion 76 of the hollow tubular member mounting the cutting or rasp instrument or the knife 70 at the opposite end 72 is adapted to be positioned within the bore 64 formed in the locking device 60 , and is inserted therein to the extent such that the spacer 78 ring which is fastened to the tubular member 74 comes into contact with the leading or forward surface 80 of the locking device 70 .
  • the endoscope 82 is advanced through the hollow tubular member 74 which mounts the cutting instrument or knife 70 , as shown in FIG. 11 , and the leading end 84 of the endoscope 82 positioned closely to the cutting blade or instrument 70 , similar to the arrangements described in the above-mentioned U.S. Pat. Nos. 5,366,465 and 5,578,051 to Mirza.
  • the lever 66 is pivoted forwardly into the locking position, thereby causing the endoscope 82 to be clamped to the tubular member 74 mounting the cutting element or blade 70 . This will then facilitate ready insertion of the resultingly locked together components into the slotted cannula 10 .
  • the elongate tubular element 74 which mounts the knife or cutting element 70 at the leading end 72 , may be calibrated along the length thereof so as to provide indication as to the depth to which the instrument is being introduced into the patient towards the surgical site.
  • a tubular element 90 having calibrating markings 92 along the length thereof may be equipped with a depth gauge 94 at the leading end thereof, as shown in FIG.
  • a stop device 100 in the form of a clamp member 102 on the tubular element 90 mounting the depth gauge 94 , as shown in FIGS. 14 and 15 , and tighten a clamping element 104 , such as, for instance, a tightening screw, and which will provide information with regard to the cutting depth which is to be subsequently implemented, in that the stop device is positioned against or in proximity with the skin of the patient at the location of the incision, while the tubular element 90 and the endoscope therein are advanced within the cannula 10 .
  • a clamping element 104 such as, for instance, a tightening screw
  • a tubular element 74 mounting a knife or cutting instrument may be substituted therefore, as shown in the drawing FIGS. 10 to 12 , and wherein the tubular member 74 or element mounting the knife or cutting instrument is similarly calibrated along its length.
  • a stop device 100 is then fastened thereon at a location conforming with that of the stop device 100 which was previously mounted on the calibrated tubular member 90 mounting the depth gauge 94 . This will enable the precise determination of the depth to which the cutting instrument can be inserted through the cannula 10 into the operating site, thereby preventing any injury due to any excessive penetration past the surgical site by the cutting instrument.
  • a unique rasp member 110 having a plurality of transverse cutting edges formed thereon, and which is adapted to scrape tissue at the operating site.
  • the rasp member 110 may be in the form of a solid rod element 112 , which is insertable into the cannula 10 , including a gripping end 114 and having the rasp elements 116 at the leading end thereof for advance towards the operating site.
  • the rasp may comprise rasp elements mounted on a hollow tubular element similar of the type which supports the depth gauge 94 or knife 70 , and is adapted to be fastened to the locking device 60 and with an endoscope passed therethrough, with the lever 66 of the locking device thereafter locking the components into mutually fixed positions.
  • the slotted transparent cannula and the endoscopic instruments described above may be readily applied surgical procedures such as carpal tunnel release; cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis (tennis elbow), release of medial epicondylitis (golfer's elbow), and release of fascial compartments in the upper and lower extremity. It is also possible to customize the slotted transparent cannula to adapt to other endoscopic surgical instrument for other endoscopic surgical procedures.
  • the instrument kit contains a transparent cannula guide member including a longitudinal bore having open proximal and distal ends and an open slot extending along the length thereof communicating with the open ends, and an elongate insertion member that is slidably receivable within the cannula guide member and is configured so that at least portions thereof conform with the open distal end and the open slot of the guide member to form a smooth exterior surface in combination therewith.
  • the instrument kit further includes an endoscope sized for insertion into the cannula guide member for direct visualization of an operative site.
  • the endoscope is capable to carry a cutting instrument at a leading end.
  • the instrument kit further includes a cutting instrument mountable to the leading end of the endoscope.
  • the instrument kit further includes a second endoscope with a cutting instrument mounted at a leading end of the second endoscope.
  • the second endoscope is insertable into the cannula guide member such that the cutting instrument protrudes through the open slot in the cannula guide member.
  • the instrument kit further includes a depth gauge mountable to a leading end of the endoscope.
  • the instrument kit further includes a rasp member sized for insertion into the cannula guide member.
  • the instrument kit further includes a locking device capable of locking the endoscope and the cannula guide member into mutually fixed positions.
  • the instrument kit further includes a stop device mountable on the cannula guide member to prevent excessive penetration at a surgical site by the cutting instrument.
  • the instrument kit further includes a curved dissector.
  • the method includes the steps of making an incision on a patient in need of such endoscopic surgical procedure at a location proximate an operation site to establish an entry portal, inserting an elongate insertion member into a longitudinal bore of an elongate transparent cannula having open proximal and distal ends and an open slot extending along the length of the transparent cannula, the elongate insertion member being configured to form a smooth exterior surface at the open distal end of the transparent cannula when fully inserted into the transparent cannula; introducing the distal end of the transparent cannula/insertion member combination into the entry portal and advancing the combination a predetermined distance relative to the operation site; withdrawing the insertion member while permitting the transparent cannula to remain in place at the operation site; inserting a first endoscope into the transparent cannula for direct visualization
  • first endoscope and the second endoscope are the same endoscope. In another embodiment, the first endoscope and the second endoscope are different endoscopes.
  • the transparent cannula of the present invention can be inserted into the tissue through a small opening and advanced to a surgical site, thus forming a passageway towards the surgical site.
  • the passageway allows the insertion of the endoscope and other instruments to the surgical site without further damages to the surrounding tissues.
  • the transparent cannula body also allows endoscopic examination of the surrounding anatomical structures without any movement of the cannula body.
  • the longitudinal slot provides improved visualization of the target anatomical structure and control over the inserted devices.
  • the cannula is lightweight and can be produced at low cost.
  • the slotted transparent cannula can be used in endoscopic surgical procedures such as carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of the extensor tendons for lateral epicondylitis (tennis elbow), release of the posterior and other compartments of the leg, and the forearm fascial release for fascial compartment syndrome.
  • Cross Cannula For Endoscopic Carpal Tunnel Release 1-a. Preparation of the Clear Cannula
  • a single incision is made in the palm proximate the distal side of the transverse carpal ligament (TCL).
  • TCL transverse carpal ligament
  • a curved dissector is inserted to form a passage beneath the TCL.
  • the obturator and the Clear Cannula are introduced into the same pathway.
  • the cannula tip should always stay against the under surface of the TCL and superficial to the flexor tendons and ulnar bursa.
  • Prior to removal of the obturator rotate the assembly so the slot of the cannula faces slightly toward the ulnar side. The cannula should not be rotated past two and ten o'clock respectively.
  • the Clear Cannula should allow for adequate visualization of the median nerve and flexor tendons without the need to rotate the slot of the cannula towards these anatomic structures. Due to variations of anatomy, visual confirmation of these structures may not be possible. If visualization of these structures is inadequate, the surgeon may rotate the slot of the cannula towards the median nerve (radial) and flexor tendons (ulnar) to verify proper cannula placement.
  • the endoscope With a clear view of the transverse fibers of the TCL and no other intervening structures visible within the slotted portion of the cannula, the endoscope is removed from the cannula.
  • the scope-mounting blade is attached to the endoscope via the locking device.
  • the scope-mounting blade/scope assembly is introduced into the cannula and, as the surgeon observes the monitor, the TCL is divided by advancing the scope-mounted blade through the cannula in a proximal direction.
  • This procedure dramatically reduces the risk of damaging any tissue and nerves, such as the median nerve, in the vicinity of the operating site. It also enables the surgeon to exercise an improved degree of control over the possibly single-handed manipulation of the endoscopic instrument and cutting blade.
  • An “X” I splaced on both the medial epicondyle and olecrnon.
  • a 3-4 cm incision is made along the course of the ulnar nerve at the cubital tunnel between the marked anatomical structures.
  • a dissector is inserted to form a passage beneath the distal and proximal ulnar sheath. Once the distal or proximal pathway is created and the dissector removed, introduce the obturator and Clear Cannula into the same pathway. The surgeon should have direct visualization of the ulnar nerve so that the slotted portion of the cannula can be positioned 180 degrees to the ulnar nerve. Remove the obturator.
  • the Clear Cannula should allow for adequate visualization of the ulnar nerve and surrounding tissue without the need to rotate the slot of the cannula towards these anatomic structures. Due to variations of anatomy, visual confirmation of the ulnar nerve may not be possible. If visualization is inadequate, the surgeon may rotate the slot of the cannula towards the ulnar nerve to verify proper cannula placement.
  • the endoscope With a clear view of the transverse fibers of distal/proximal ulnar sheath and no other intervening structures visible within the slotted portion of the cannula, the endoscope is removed from the cannula.
  • the scope-mounting blade is attached to the endoscope via the locking device.
  • the scope-mounting blade/scope assembly is introduced into the cannula and, as the surgeon observes the monitor, the sheath is divided by advancing the scope-mounted blade through the cannula.

Abstract

A slotted cannula for endoscopic surgical procedures is disclosed. The slotted cannula has a tubular body having a distal end, a proximate end, an open slot extending longitudinally from the beginning of the proximate end to the proximity of the distal end, and a pair of wings integrally formed on the proximate end. The tubular body is made from a transparent material and has an inner diameter large enough to accommodate an endoscope.

Description

  • This application is a continuation of U.S. patent application Ser. No. 14/448,488, filed on Jul. 31, 2014, which is a continuation of U.S. patent application Ser. No. 12/716,640, filed on Mar. 3, 2010, which is a continuation-in-part application of U.S. patent application Ser. No. 12/400,485, filed on Mar. 9, 2009, now U.S. Pat. No. 8,821,383. The entirety of all of the aforementioned applications is incorporated herein by reference.
  • FIELD
  • The present invention relates to medical devices and, in particular, to a slotted cannula for endoscopic operations.
  • BACKGROUND
  • Endoscopic surgery is a minimally invasive surgical procedure that is performed through small incisions or natural body openings. An endoscopic procedure typically involves use of specialized devices and remote-control manipulation of instruments with indirect observation of the surgical field through an endoscope or similar device. Comparing to open surgery, endoscopic surgery may result in shorter hospital stays, or allow outpatient treatment.
  • Among more recent developments and advances in endoscopic surgical procedures, arthroscopic surgery employing the use of endoscopic devices has found widespread application. For example, endoscopic procedures have been successfully used in effectuating carpal tunnel release with specially designed endoscopic instruments, such as those described in U.S. Pat. No. 5,366,465, U.S. Pat. No. 5,578,051, U.S. Pat. No. 5,968,061, and U.S. Pat. No. 7,041,115, all of which are incorporated herein by reference. However, there always exists a need to further improve the design of the instrument while reducing the cost.
  • SUMMARY
  • One aspect of the present invention relates to a transparent cannula specifically designed for endoscopic surgical procedures. The cannula has a tubular body having a distal end and a proximate end, an open slot extending longitudinally from the beginning of the proximate end to the proximity of the distal end, and a pair of wings integrally formed on the proximate end. The tubular body is made from a transparent material and has an inner diameter large enough to accommodate an endoscope. The endoscopic surgical procedure is a procedure selected from the group consisting of carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compartments of the leg, forearm fascia release for fascial compartment syndrome, and release of fascial compartments in the upper and lower extremity.
  • In one embodiment, the cannula is a slotted transparent cannula.
  • In another embodiment, the pair of wings are formed on opposing edges of the slot and extend radially from the tubular body.
  • In another embodiment, the tubular body has an inner diameter in the range of 1-10 mm, preferably 2-8 mm, and more preferably 2-5 mm
  • In another embodiment, the tubular body has an outer diameter in the range of 2-12 mm, preferably 4-10 mm, and more preferably 4-7 mm.
  • In another embodiment, the tubular body has a length in the range of 5-25 cm, preferably 12-18 cm, and more preferably 10-15 cm.
  • In another embodiment, the open slot has a width in the range of 1-6 mm, preferably 1.5-5 mm, and more preferably 2-4 mm.
  • In another embodiment, the tubular body is made from a transparent plastic material.
  • In another embodiment, the transparent plastic material is selected from the group consisting of polyacrylate, polycarbonate, polystyrene, glycol modified polyethylene terephthalate, and cellulose acetate butyrate.
  • In another embodiment, the tubular body further comprises one or more observation holes.
  • Another aspect of the present invention relates to an instrument kit for implementing an endoscopic surgical procedure. The instrument kit comprises a transparent cannula guide member including a longitudinal bore having open proximal and distal ends and an open slot extending along the length thereof communicating with the open ends, and an elongated insertion member that is slidably receivable within the cannula guide member and is configured so that at least portions thereof conform with the open distal end and the open slot of the guide member to form a smooth exterior surface in combination therewith. The endoscopic surgical procedure is a procedure selected from the group consisting of carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compaitinents of the leg, forearm fascia release for fascial compartment syndrome, and release of fascial compartments in the upper and lower extremity.
  • In one embodiment, the instrument kit further comprises an endoscope sized for insertion into the cannula guide member for direct visualization of an operative site.
  • In another embodiment, the endoscope is capable of carrying a cutting instrument at a leading end.
  • In another embodiment, the instrument kit further includes a cutting instrument mountable to the leading end of the endoscope.
  • In another embodiment, the instrument kit further includes a second endoscope with a cutting instrument mounted at a leading end of the second endoscope. The second endoscope is insertable into the cannula guide member such that the cutting instrument protrudes through the open slot in the cannula guide member.
  • In another embodiment, the instrument kit further includes a depth gauge mountable to a leading end of the endoscope.
  • In another embodiment, the instrument kit further includes a rasp member sized for insertion into the cannula guide member.
  • In another embodiment, the instrument kit further includes a locking device capable of locking the endoscope and the cannula guide member into mutually fixed positions.
  • In another embodiment, the instrument kit further includes a stop device mountable on the cannula guide member to prevent excessive penetration at a surgical site by the cutting instrument.
  • In another embodiment, the instrument kit further includes a curved dissector.
  • In another embodiment, the transparent cannula guide member is made from a transparent plastic material selected from the group consisting of polyacrylate, polycarbonate, polystyrene, glycol modified polyethylene terephthalate, and cellulose acetate butyrate.
  • Another aspect of the present invention relates to a method for implementing a uniportal endoscopic surgical procedure using the slotted transparent cannula of the present invention.
  • In one embodiment, the endoscopic surgical procedure is a procedure selected from the group consisting of carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis, release of medial epicondylitis, release of the posterior and other compartments of the leg, forearm fascia release for fascial compartment syndrome, and release of fascial compartments in the upper and lower extremity.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention can be better understood by reference to the following drawings. The drawings are merely exemplary to illustrate certain features that may be used singularly or in combination with other features and the present invention should not be limited to the embodiments shown.
  • FIG. 1 illustrates a three-dimentional view of an embodiment of a slotted transparent cannula.
  • FIG. 2 illustrates a top view of the slotted transparent cannula.
  • FIG. 3 illustrates a sectional view taken along line 3-3 in FIG. 2.
  • FIG. 4 illustrates a longitudinal side view of the leading end of an obturator adapted to be inserted into the slotted cannula of FIG. 1.
  • FIG. 5 illustrates a top view of the leading end of the obturator.
  • FIG. 6 illustrates a longitudinal side view of the endoscopic instrument, showing the scope and cutting device mounted on the latter inserted into the slotted cannula.
  • FIG. 7 illustrates a top view of the leading section of the endoscopic instrument shown in FIG. 6.
  • FIG. 8 illustrates, on a somewhat enlarged scale, a sectional view of the encircled portion A of the instrument of FIG. 6.
  • FIG. 9 illustrates a side view of the locking device.
  • FIG. 10 illustrates a tubular member mounting a surgical knife being inserted into the locking device.
  • FIG. 11 illustrates the assembling of the components including an endoscope.
  • FIG. 12 also illustrates the assembling of the components including an endoscope.
  • FIG. 13 illustrates the tubular member mounting a depth gauge.
  • FIG. 14 illustrates the tubular member mounting the depth gauge connected to the locking device and having a stop device for limiting the extent of insertion into an incision formed in a patient.
  • FIG. 15 is a sectional view taken along line 15-15 in FIG. 14.
  • FIG. 16 illustrates a rasp member adapted to scrape a curtain of tissue at an operating site.
  • DETAILED DESCRIPTION
  • One aspect of the present invention relates to a slotted transparent cannula 10 (FIG. 1), specifically designed for endoscopic surgical procedures. The cannula 10 has a tubular body 11 with a proximate end 12 and a distal end 13, a slot 14 extending longitudinally from the beginning of the proximate end 12 to the proximity of the distal end 13, and a flange and a pair of wings 15 and 16 integrally formed on the proximate end 12. The slot 14 starts at the very beginning of the proximate end of the tubular body 11 so that an instrument with a matching structure, such as a protrusion, can be inserted into the cannula 10 from the proximate end of the tubular body. The slot 14 ends at a short distance from the distal end of the tubular body 11 to prevent excessive advancement of cannual mount surgical tools, such as obturators or blades at the surgical site. The tubular body 11 is made from a transparent material and has an inner diameter large enough for an endoscope to pass through. In one embodiment, the wings 15 and 16 are formed on the opposing edges of the slot 14 and extend radially from the tubular body 11.
  • As shown in FIGS. 2 and 3, the tubular body 11 of the cannula 10 is circular in cross-sectional configuration and has a central aperture 17 to facilitate passage of an endoscope or other surgical devices. The central aperture 17 is sized to allow passage of the necessary surgical instruments, such as obturators and endoscopes, with sufficient clearance. In one embodiment, the central aperture has a diameter of 1-10 mm, preferably 2-8 mm, and more preferably 2-5 mm While FIG. 2 shows a substantially circular central aperture 17, the central aperture can have a cross-section of any shape, so long as it allows the passage of an endoscope of other surgical devices. The outside diameter of the tubular body 11 varies with application but is typically in the range of 2-12 mm, preferably 4-10 mm, and more preferably 4-7 mm. The length of the tubular body 11 also varies with application. For example, the tubular body 11 would have a length of about 5-25 cm; preferably, 12-18 cm; and more preferably, 10-15 cm for carpal tunnel release and cubital tunnel release. The slot 14 allows a controlled movement of a passage of a surgical blade through the central aperture 17. In one embodiment, the slot 14 has a width in the range of 1-6 mm, preferably 1.5-5 mm, and more preferably 2-4 mm.
  • The wings 15 and 16 are integral parts of the tubular body 11 and extend outward radially to provide holding points for the cannula 10. In other embodiments, the wings 15 and 16 may be replaced with integrally formed outwardly extending curvilinear flange portions. In one embodiment, the flange portions are curved to match the curvature of the proximate end of an obturator. In another embodiment, the distal end of the cannula 10 may also be configured to form an integral obturator and dissector, thereby eliminating separate components.
  • In one embodiment, the cannula 10 is made from a transparent plastic material. As used hereinafter, the term “transparent plastic material” refers to a polymer material that has a light transmission rate equal to, or greater than, 80%. Preferably, the transparent plastic material has a light transmission rate equal to, or greater than, 90%.
  • The transparency of the cannula wall makes it possible to observe the anatomical structure around the insertion path with an endoscope. In addition, the plastic cannula is lightweight and can be made by injection molding to reduce cost. The transparent plastics used in the present invention should have good impact resistance and abrasion resistance. In one embodiment, the transparent plastics may be coated with a cover layer such as alumina or diamond like carbon, to improve abrasion resistance. The tubular body may further contain observation holes for better identification of the surrounding tissue. In one embodiment, the observation holes are oblong openings on the opposite side of slot 14.
  • Examples of transparent plastics include, but are not limited to, polyacrylate such as polymethlamethacrylate, polycarbonate, polystyrene, glycol modified polyethylene terephthalate, and cellulose acetate butyrate. Transparent plastics are commercially available under the tradenames of Acrystex.®, NAS.®, Empera.®, Kibiton.®, Zylar.®, Zytel.®, etc.). The transparent cannula 10 can be used in combination with a variety of surgical instruments. Although these instruments have been shown in the Mirza U.S. Pat. Nos. 5,366,465, 5,578,051, 5,968,061 and 7,041,115, some of these instruments are described in detail herein for purposes of clarity the utility of the transparent cannula 10 of the present invention.
  • FIGS. 4 and 5 show an obturator 28 that is adapted to be slidably received within the cannula body 11, and presents a smooth outer surface through the intermediary of an axial, upstanding rib portion 30 which is engageable in close conformance within the longitudinal slot 14 of the cannula upon insertion therein. The distal end of the obturator 28 is a tapered tip portion 32 which is bent upwardly in a direction towards the longitudinal rib to impart to the tip a somewhat upward curvature.
  • FIGS. 6-8 show an arthroscope 22 that is adapted to be slidably received within the cannula 10. The arthroscope 22 includes a suitable knurled knob 40 having an internal threaded portion 42 in a cylindrical extension 44 and a tapered bore 46 for receiving a tubular knife or cutting blade holder 48. The blade or knife holder 48 is adapted to receive a scope 50 of cylindrical configuration extending therethrough and lock the latter within the blade holder by simply axially displacing the knurled nut 40 through threaded interengagement between the internal thread 42 of the nut and an external thread 52 on the blade holder. This will cause the tapered bore 46 of nut 40 to either compress the slotted portion 54 of the blade holder to clampingly engage the scope 50 or to loosen it so as to enable axial adjustment thereof relative to the blade holder. A regular rod-like endoscope without a blade holder may also be inserted through the cannula for effective visualization of the operative site.
  • FIGS. 9-12 show a locking device 60 that can be used to lock the blade holder and the transparent cannula 10 into mutually fixed positions. The locking device 60 includes a rectangular housing structure 62 with a longitudinal through bore 64 for receiving a tubular element supporting a gauge or cutting blade and for receiving a rod-like endoscope. A pivotable lever 66 mounted on the housing structure 62 is adapted to be swung between an opened position to a locked position so as to impart a clamping action to a tubular element extending through bore 64 by means of a camming structure.
  • In one aspect, a cutting instrument, such as a surgical knife 70, which may be disposable, as shown in FIG. 10, is mounted at the leading end 72 of an elongate hollow tubular member 74 towards the opposite end of which the latter includes a hub portion 76 and a ring 78 spaced at a short distance therefrom, which forms a spacer defining the length of the tubular member 74 extending towards the knife blade 70, or any cutting or rasp instrument for removing tissue, such as a “curtain” of tissue, which is provided instead of the knife blade 70.
  • As shown in FIGS. 10-12, in diagrammatic sequence, the hub end portion 76 of the hollow tubular member mounting the cutting or rasp instrument or the knife 70 at the opposite end 72 is adapted to be positioned within the bore 64 formed in the locking device 60, and is inserted therein to the extent such that the spacer 78 ring which is fastened to the tubular member 74 comes into contact with the leading or forward surface 80 of the locking device 70. At that point in time, the endoscope 82 is advanced through the hollow tubular member 74 which mounts the cutting instrument or knife 70, as shown in FIG. 11, and the leading end 84 of the endoscope 82 positioned closely to the cutting blade or instrument 70, similar to the arrangements described in the above-mentioned U.S. Pat. Nos. 5,366,465 and 5,578,051 to Mirza.
  • As shown in FIG. 12, as the endoscope 82 has its leading end 84 appropriately positioned in proximity relative to the knife or cutting instrument 70, the lever 66 is pivoted forwardly into the locking position, thereby causing the endoscope 82 to be clamped to the tubular member 74 mounting the cutting element or blade 70. This will then facilitate ready insertion of the resultingly locked together components into the slotted cannula 10.
  • The elongate tubular element 74, which mounts the knife or cutting element 70 at the leading end 72, may be calibrated along the length thereof so as to provide indication as to the depth to which the instrument is being introduced into the patient towards the surgical site. In this connection, in lieu of the tubular member mounting a knife or cutting element 70, prior to the use thereof with the endoscope 82, a tubular element 90 having calibrating markings 92 along the length thereof, which is similar to tubular element 74, may be equipped with a depth gauge 94 at the leading end thereof, as shown in FIG. 13, which, in a manner similar to the tubular member 74 mounting a knife or cutting element, is adapted to be inserted at the hub end 96 thereof into the locking device 60 until ring 98 contacts the locking device, with the endoscopic element inserted therein to provide illumination of the operating site, and the lever 66 being swung forwardly into the locking position.
  • Upon determination of the appropriate insertion depth to the surgical site by means of the tubular member 90 mounting the depth gauge 94, having the endoscope mounted therein, it is desirable to mount a stop device 100 in the form of a clamp member 102 on the tubular element 90 mounting the depth gauge 94, as shown in FIGS. 14 and 15, and tighten a clamping element 104, such as, for instance, a tightening screw, and which will provide information with regard to the cutting depth which is to be subsequently implemented, in that the stop device is positioned against or in proximity with the skin of the patient at the location of the incision, while the tubular element 90 and the endoscope therein are advanced within the cannula 10.
  • Upon withdrawing the tubular element 90 mounting the depth gauge 94 from the slotted cannula 10, a tubular element 74 mounting a knife or cutting instrument may be substituted therefore, as shown in the drawing FIGS. 10 to 12, and wherein the tubular member 74 or element mounting the knife or cutting instrument is similarly calibrated along its length. A stop device 100 is then fastened thereon at a location conforming with that of the stop device 100 which was previously mounted on the calibrated tubular member 90 mounting the depth gauge 94. This will enable the precise determination of the depth to which the cutting instrument can be inserted through the cannula 10 into the operating site, thereby preventing any injury due to any excessive penetration past the surgical site by the cutting instrument.
  • Furthermore, in lieu of the use of a knife blade being mounted on a tubular member 74, as the cutting element there may also be employed a unique rasp member 110 having a plurality of transverse cutting edges formed thereon, and which is adapted to scrape tissue at the operating site. The rasp member 110, as shown in FIG. 16, may be in the form of a solid rod element 112, which is insertable into the cannula 10, including a gripping end 114 and having the rasp elements 116 at the leading end thereof for advance towards the operating site. Alternatively, the rasp may comprise rasp elements mounted on a hollow tubular element similar of the type which supports the depth gauge 94 or knife 70, and is adapted to be fastened to the locking device 60 and with an endoscope passed therethrough, with the lever 66 of the locking device thereafter locking the components into mutually fixed positions.
  • The slotted transparent cannula and the endoscopic instruments described above may be readily applied surgical procedures such as carpal tunnel release; cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of radial tunnel, release of pronatar teres, release of trigger finger, release of lacertous fibrosis, release of the extensor tendons for lateral epicondylitis (tennis elbow), release of medial epicondylitis (golfer's elbow), and release of fascial compartments in the upper and lower extremity. It is also possible to customize the slotted transparent cannula to adapt to other endoscopic surgical instrument for other endoscopic surgical procedures.
  • Another aspect of the present invention relates to an instrument kit for implementing an endoscopic surgical procedure. The instrument kit contains a transparent cannula guide member including a longitudinal bore having open proximal and distal ends and an open slot extending along the length thereof communicating with the open ends, and an elongate insertion member that is slidably receivable within the cannula guide member and is configured so that at least portions thereof conform with the open distal end and the open slot of the guide member to form a smooth exterior surface in combination therewith.
  • In one embodiment, the instrument kit further includes an endoscope sized for insertion into the cannula guide member for direct visualization of an operative site.
  • In another embodiment, the endoscope is capable to carry a cutting instrument at a leading end.
  • In another embodiment, the instrument kit further includes a cutting instrument mountable to the leading end of the endoscope.
  • In another embodiment, the instrument kit further includes a second endoscope with a cutting instrument mounted at a leading end of the second endoscope. The second endoscope is insertable into the cannula guide member such that the cutting instrument protrudes through the open slot in the cannula guide member.
  • In another embodiment, the instrument kit further includes a depth gauge mountable to a leading end of the endoscope.
  • In another embodiment, the instrument kit further includes a rasp member sized for insertion into the cannula guide member.
  • In another embodiment, the instrument kit further includes a locking device capable of locking the endoscope and the cannula guide member into mutually fixed positions.
  • In another embodiment, the instrument kit further includes a stop device mountable on the cannula guide member to prevent excessive penetration at a surgical site by the cutting instrument.
  • In another embodiment, the instrument kit further includes a curved dissector.
  • Another aspect of the present invention relates to a method for implementing a uniportal endoscopic surgical procedure using the slotted transparent cannula of the present invention. In one embodiment, the method includes the steps of making an incision on a patient in need of such endoscopic surgical procedure at a location proximate an operation site to establish an entry portal, inserting an elongate insertion member into a longitudinal bore of an elongate transparent cannula having open proximal and distal ends and an open slot extending along the length of the transparent cannula, the elongate insertion member being configured to form a smooth exterior surface at the open distal end of the transparent cannula when fully inserted into the transparent cannula; introducing the distal end of the transparent cannula/insertion member combination into the entry portal and advancing the combination a predetermined distance relative to the operation site; withdrawing the insertion member while permitting the transparent cannula to remain in place at the operation site; inserting a first endoscope into the transparent cannula for direct visualization of anatomic structures surrounding the transparent cannula and positioning of the transparent cannula at the operative site; withdrawing the first endoscope from the transparent cannula; mounting a cutting instrument on a leading end of a second endoscope; inserting the second endoscope with the cutting instrument into the transparent cannula such that the cutting instrument protrudes into the open slot in the transparent cannula, and advancing the second endoscope so that the cutting instrument is in contact with a target tissue at the operation site; operatively engaging the target tissue with the cutting instrument while advancing the latter under direct visualization through the second endoscope so as to perform a desired operative procedure on the target tissue; withdrawing the second endoscope and the cutting instrument from the transparent cannula; withdrawing the transparent cannula through the entry portal; and suturing the incision.
  • In one embodiment, the first endoscope and the second endoscope are the same endoscope. In another embodiment, the first endoscope and the second endoscope are different endoscopes.
  • The transparent cannula of the present invention can be inserted into the tissue through a small opening and advanced to a surgical site, thus forming a passageway towards the surgical site. The passageway allows the insertion of the endoscope and other instruments to the surgical site without further damages to the surrounding tissues. The transparent cannula body also allows endoscopic examination of the surrounding anatomical structures without any movement of the cannula body. The longitudinal slot provides improved visualization of the target anatomical structure and control over the inserted devices. The cannula is lightweight and can be produced at low cost. The slotted transparent cannula can be used in endoscopic surgical procedures such as carpal tunnel release, cubital tunnel release, plantar fascia release, lateral release for patella realignment, release of the extensor tendons for lateral epicondylitis (tennis elbow), release of the posterior and other compartments of the leg, and the forearm fascial release for fascial compartment syndrome.
  • The present invention is further illustrated by the following examples which should not be construed as limiting. The contents of all references, patents and published patent applications cited throughout this application, as well as the Figures and Tables are incorporated herein by reference.
  • EXAMPLE 1
  • Use of the Slotted Transparent Cannula (hereinafter “Clear Cannula”) For Endoscopic Carpal Tunnel Release
    1-a. Preparation of the Clear Cannula
  • Prepare the Clear Cannula for insertion by introducing the obturator through the cannula. The prong at the distal end of the obturator should be between the wings of the cannula. This ensures that the distal tip of the obturator is oriented correctly.
  • 1-b. Introduction of Clear Cannula
  • A single incision is made in the palm proximate the distal side of the transverse carpal ligament (TCL). A curved dissector is inserted to form a passage beneath the TCL. Once the pathway is created and the dissector removed, the obturator and the Clear Cannula are introduced into the same pathway. The cannula tip should always stay against the under surface of the TCL and superficial to the flexor tendons and ulnar bursa. Prior to removal of the obturator rotate the assembly so the slot of the cannula faces slightly toward the ulnar side. The cannula should not be rotated past two and ten o'clock respectively.
  • 1-c. Endoscopic Visualization of Anatomy
  • A 4 mm, 30 degree endoscope, oriented towards the slot of the cannula, is then introduced into the cannula. Visualization of the transverse carpal ligament fibers and fibers of the antebrachial fascia should be visible through the slotted portion of the cannula. If the transverse fibers of the TCL are not clearly seen, the cannula must be removed using the obturator and the introduction procedure repeated.
  • The Clear Cannula should allow for adequate visualization of the median nerve and flexor tendons without the need to rotate the slot of the cannula towards these anatomic structures. Due to variations of anatomy, visual confirmation of these structures may not be possible. If visualization of these structures is inadequate, the surgeon may rotate the slot of the cannula towards the median nerve (radial) and flexor tendons (ulnar) to verify proper cannula placement.
  • 1-d. Division of the Transverse Carpal Ligament
  • With a clear view of the transverse fibers of the TCL and no other intervening structures visible within the slotted portion of the cannula, the endoscope is removed from the cannula. The scope-mounting blade is attached to the endoscope via the locking device.
  • The scope-mounting blade/scope assembly is introduced into the cannula and, as the surgeon observes the monitor, the TCL is divided by advancing the scope-mounted blade through the cannula in a proximal direction.
  • Once division is complete, remove the blade/scope assembly from the cannula, remove the blade from the endoscope and confirm division by reintroducing the endoscope into the cannula. Once division has been verified remove the Clear Cannula by reintroducing the obturator. The Clear Cannula should not be removed without first introducing the obturator).
  • This procedure dramatically reduces the risk of damaging any tissue and nerves, such as the median nerve, in the vicinity of the operating site. It also enables the surgeon to exercise an improved degree of control over the possibly single-handed manipulation of the endoscopic instrument and cutting blade.
  • EXAMPLE 2 Use of the Clear Cannula for Endoscopic Cubital Tunnel Release
  • 2-a. Preparation of the Clear Cannula
  • Prepare the Clear Cannula for insertion by introducing the obturator through the cannula. The prong at the distal end of the obturator should be between the wings of the cannula. This ensures that the distal tip of the obturator is oriented correctly.
  • 2-b. Introduction of the Clear Cannula
  • An “X” I splaced on both the medial epicondyle and olecrnon. A 3-4 cm incision is made along the course of the ulnar nerve at the cubital tunnel between the marked anatomical structures. A dissector is inserted to form a passage beneath the distal and proximal ulnar sheath. Once the distal or proximal pathway is created and the dissector removed, introduce the obturator and Clear Cannula into the same pathway. The surgeon should have direct visualization of the ulnar nerve so that the slotted portion of the cannula can be positioned 180 degrees to the ulnar nerve. Remove the obturator.
  • 2-c. Endoscopic Visualization of Anatomy
  • A 4 mm, 30 degree endoscope, oriented towards the slot of the cannula, is then introduced into the cannula. Visualization of the (distal/proximal) ulnar nerve sheath should be visible through the slotted portion of the cannula. If the transverse fibers of the fascia are not clearly seen, the cannula must be removed using the obturator and the introduction procedure repeated.
  • The Clear Cannula should allow for adequate visualization of the ulnar nerve and surrounding tissue without the need to rotate the slot of the cannula towards these anatomic structures. Due to variations of anatomy, visual confirmation of the ulnar nerve may not be possible. If visualization is inadequate, the surgeon may rotate the slot of the cannula towards the ulnar nerve to verify proper cannula placement.
  • 2-d. Division of the Distal and Proximal Ulnar Sheath
  • With a clear view of the transverse fibers of distal/proximal ulnar sheath and no other intervening structures visible within the slotted portion of the cannula, the endoscope is removed from the cannula. The scope-mounting blade is attached to the endoscope via the locking device.
  • The scope-mounting blade/scope assembly is introduced into the cannula and, as the surgeon observes the monitor, the sheath is divided by advancing the scope-mounted blade through the cannula.
  • Once division is complete, remove the blade/scope assembly from the cannula, remove the blade from the endoscope and confirm division by reintroducing the endoscope into the cannula. Once division has been verified, remove the Clear Cannula by reintroducing the obturator. The Clear Cannula should not be removed without first introducing the obturator.
  • The above description is for the purpose of teaching the person of ordinary skill in the art how to practice the present invention, and it is not intended to detail all those obvious modifications and variations of it which will become apparent to the skilled worker upon reading the description. It is intended, however, that all such obvious modifications and variations be included within the scope of the present invention, which is defined by the following claims. The claims are intended to cover the claimed components and steps in any sequence which is effective to meet the objectives there intended, unless the context specifically indicates the contrary.

Claims (30)

What is claimed is:
1. A method for performing endoscopic carpal tunnel release, comprising:
making an incision at a location proximate to a transverse carpal ligament in need of such release to establish an entry portal;
inserting a dissector into the entry portal to form a pathway beneath the transverse carpal ligament;
inserting an elongated cannula having a tubular body with an open proximal end and an open slot extending to the proximity of a distal end into the pathway;
visualizing the transverse carpal ligament with an endoscope;
dividing the transverse carpal ligament with a cutting instrument protruding through the open slot of the elongated cannula; and
withdrawing the elongated cannula through the entry portal.
2. The method of claim 1, wherein the tubular body of the elongated cannula has an inner diameter in the range about 1-10 mm.
3. The method of claim 1, wherein the tubular body of the elongated cannula has an outer diameter in the range about 2-12 mm.
4. The method of claim 1, wherein the tubular body of the elongated cannula has a length in the range about 5-25 cm.
5. The method of claim 1, wherein the tubular body of the elongated cannula is made from a transparent plastic material.
6. The method of claim 1, further comprising the step of advancing an endoscope into the tubular body of the elongated cannula.
7. A method for performing an endoscopic surgical procedure, comprising:
making an incision at a location proximate to an operative site in need of such surgical procedure to establish an entry portal;
inserting a dissector into the entry portal to form a pathway to the operative site;
inserting an elongated cannula having a tubular body with an open proximal end and an open slot extending to the proximity of a distal end into the pathway and advancing the elongate cannula until the distal end of the elongate cannula reaches the operative site;
visualizing a target tissue at the operative site with an endoscope and positioning the cannula at the operative site so as to perform a desired operative procedure on the target tissue;
operatively engaging the target tissue with a cutting instrument protruding through the open slot in the proximity of the distal end of the elongated cannula; and
withdrawing the elongated cannula through the entry portal.
8. The method of claim 7, wherein the tubular body of the elongated cannula has an inner diameter in the range about 1-10 mm and a length in the range about 5-25 cm.
9. The method of claim 8, further comprising the step of advancing an endoscope into the tubular body of the elongated cannula.
10. The method of claim 7, wherein the endoscopic surgical procedure is carpal tunnel release.
11. The method of claim 7, wherein the endoscopic surgical procedure is cubital tunnel release.
12. The method of claim 7, wherein said endoscopic surgical procedure is plantar fascia release.
13. The method of claim 7, wherein said endoscopic surgical procedure is lateral release for patella realignment.
14. The method of claim 7, wherein said endoscopic surgical procedure is release of radial tunnel.
15. The method of claim 7, wherein said endoscopic surgical procedure is release of pronatar teres.
16. The method of claim 7, wherein said endoscopic surgical procedure is release of trigger finger.
17. The method of claim 7, wherein said endoscopic surgical procedure is release of lacertous fibrosis.
18. The method of claim 7, wherein said endoscopic surgical procedure is release of the extensor tendons for lateral epicondylitis.
19. The method of claim 7, wherein said endoscopic surgical procedure is release of medial epicondylitis.
20. The method of claim 7, wherein said endoscopic surgical procedure is release of fascial compartments in the upper and lower extremity.
21. A device for performing endoscopic carpal tunnel release and cubital tunnel release, comprising:
an elongated cannula having a tubular body with a central lumen, an open proximal end and an open slot extending to the proximity of a distal end; and
a movable blade capable of extending through said open slot to divide a target tissue wherein the tubular body of the elongated cannula has a length in the range about 10-15 cm.
22. The device of claim 21, further comprising an endoscope.
23. The device of claim 22, wherein the endoscope is inserted into said elongated cannula.
24. The device of claim 21, wherein the tubular body of the elongated cannula has an inner diameter in the range about 1-10 mm.
25. The device of claim 21, wherein the tubular body of the elongated cannula has an outer diameter in the range about 2-12 mm.
26. The device of claim 21, wherein the tubular body of the elongated cannula is made from a transparent plastic material.
27. A device for performing an endoscopic procedure, comprising:
an elongated cannula having a tubular body with a central lumen, an open proximal end and an open slot extending to the proximity of a distal end; and
a movable blade capable of extending through said open slot to divide a target tissue.
28. The device of claim 27, further comprising an endoscope.
29. The device of claim 27, wherein the endoscope is inserted into said elongated cannula.
30. The device of claim 27, wherein the tubular body of the elongated cannula is made from a transparent plastic material.
US14/477,478 2009-03-09 2014-09-04 Slotted clear cannula Abandoned US20140371526A1 (en)

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US15/334,784 US10849644B2 (en) 2009-03-09 2016-10-26 Surgical device
US17/107,923 US20210077139A1 (en) 2009-03-09 2020-11-30 Surgical device

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US12/400,485 US8821383B2 (en) 2009-03-09 2009-03-09 Slotted clear cannula
US12/716,640 US8827893B2 (en) 2009-03-09 2010-03-03 Slotted clear cannula
US14/448,488 US10433862B2 (en) 2009-03-09 2014-07-31 Slotted clear cannula
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160113671A1 (en) * 2014-10-27 2016-04-28 J. Lee Berger Grooved director with instrument guide
WO2018038704A1 (en) * 2016-08-22 2018-03-01 A.M. Surgical, Inc. Cannula for a surgical instrument
WO2018080487A1 (en) * 2016-10-26 2018-05-03 A.M. Surgical, Inc. Surgical device
US10201372B2 (en) 2016-08-22 2019-02-12 A.M. Surgical, Inc. Cannula for a surgical instrument
US10357272B2 (en) 2014-09-18 2019-07-23 Mayo Foundation For Medical Education And Research Soft tissue cutting device and methods of use
US10448965B2 (en) 2014-11-12 2019-10-22 Manuel F. DaSilva Systems, methods, and devices for endoscopic nerve release
US10806481B2 (en) 2015-10-02 2020-10-20 Nanice Medical Solutions Llc Surgical device for use in endoscopic carpal tunnel release (ECTR), endoscopic cubital tunnel release (ECuTR), and endoscopic plantar fasciitis release (EPFR)
US10849644B2 (en) 2009-03-09 2020-12-01 A.M. Surgical, Inc. Surgical device
US10864055B2 (en) 2017-10-13 2020-12-15 Sonex Health, Inc. Tray for a soft tissue cutting device and methods of use
US11033291B2 (en) 2015-10-02 2021-06-15 Nanice Medical Solutions Llc Surgical device for use in endoscopic carpal tunnel release (ECTR), endoscopic cubital tunnel release (ECuTR), and endoscopic plantar fasciitis release (EPFR)
USD989961S1 (en) 2021-04-30 2023-06-20 Sonex Health, Inc. Soft tissue cutting device

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9402643B2 (en) 2008-01-15 2016-08-02 Novartis Ag Targeted illumination for surgical instrument
US11096710B2 (en) 2012-09-04 2021-08-24 A.M. Surgical, Inc. Compact endoscopic surgical blade assembly and method of use thereof
US10219826B2 (en) 2010-07-14 2019-03-05 Seg-Way Orthopaedics, Inc. Method and apparatus for endoscopic ligament release
EP2603184A1 (en) * 2010-08-09 2013-06-19 Alcon Research, Ltd. Illuminated surgical instrument
WO2012096746A1 (en) * 2011-01-13 2012-07-19 A.M Surgical, Inc. Endoscopic surgical blade and use thereof
DE102011107613A1 (en) * 2011-06-30 2013-01-03 Siegfried Riek trocar
US9028504B2 (en) * 2012-03-02 2015-05-12 A.M. Surgical, Inc. Endoscopic surgical blade and method of use thereof
US9522043B1 (en) * 2012-06-11 2016-12-20 Advanced Medical Innovations, Inc. Storage and protection device for bronchoscopes
US9144433B2 (en) * 2012-07-26 2015-09-29 A.M. Surgical, Inc. Endoscopic surgical blade and method of use thereof
WO2014039085A1 (en) 2012-09-04 2014-03-13 A.M. Surgical, Inc. Compact endoscopic surgical blade assembly and method of use thereof
CN104883988B (en) 2012-09-04 2017-06-16 A.M.外科有限公司 Compact ESS blade assembly and its application method
WO2014068730A1 (en) * 2012-10-31 2014-05-08 テルモ株式会社 Flexible tube assembly
EP3305252B1 (en) * 2013-10-23 2019-05-15 Stryker European Holdings I, LLC Percutaneous bone graft delivery system
EP3649915B1 (en) * 2013-11-27 2022-01-05 Trice Medical, Inc. Surgical guide
WO2016148751A1 (en) * 2015-03-18 2016-09-22 A.M. Surgical, Inc. Video assisted surgery device
US10244931B2 (en) 2015-07-13 2019-04-02 Novartis Ag Illuminated ophthalmic infusion line and associated devices, systems, and methods
US11173008B2 (en) 2015-11-01 2021-11-16 Alcon Inc. Illuminated ophthalmic cannula
US10575867B2 (en) * 2015-11-20 2020-03-03 A.M. Surgical, Inc. Shield for endoscopic surgical blade and method of use
US9993265B2 (en) 2015-12-01 2018-06-12 Lsi Solutions, Inc. Percuscopic access device and cleaning obturator
US10499942B2 (en) 2016-02-24 2019-12-10 Ira Lown Carpal tunnel release systems and methods
US11452538B2 (en) * 2016-03-01 2022-09-27 Mission Surgical Innovations, LLC Surgical device including a cannula having a combination track
US9956053B2 (en) 2016-03-04 2018-05-01 Novartis Ag Cannula with an integrated illumination feature
CN106539612A (en) * 2017-01-10 2017-03-29 深圳市邦沃科技有限公司 A kind of minimally invasive cutter of canalis carpi
WO2019032404A1 (en) * 2017-08-07 2019-02-14 Boston Scientific Scimed, Inc. Medical systems, devices, and related methods
US20220015787A1 (en) * 2020-07-16 2022-01-20 Endogear Llc Grasping Device For Independent Tissue Manipulation During Gastrointestinal Endoscopic Procedures And Methods Of Use

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190699A (en) * 1977-05-10 1980-02-26 Sumitomo Chemical Company, Limited Method for the improvement of surface hardness of article by coating
US4482656A (en) * 1983-09-29 1984-11-13 Battelle Development Corporation Method for manufacturing a composition for coating substrates with an abrasion-resistant transparent and translucent film
US4963147A (en) * 1987-09-18 1990-10-16 John M. Agee Surgical instrument
US5179963A (en) * 1991-10-11 1993-01-19 Berger J Lee Percutaneous carpal tunnel plasty method
US5323765A (en) * 1991-12-03 1994-06-28 Brown Michael G Apparatus and method for endoscopic surgery
US5325883A (en) * 1991-11-04 1994-07-05 Orr Terrence R Device and method for carpal tunnel release
US5620456A (en) * 1995-10-20 1997-04-15 Lasersurge, Inc. Trocar assembly
US5908433A (en) * 1996-05-10 1999-06-01 Stryker Corporation Carpal tunnel knife
US5968061A (en) * 1998-04-27 1999-10-19 Theodor Esser Endoscopic surgical instrument for the implementation of endoscopic surgical procedures
US6207236B1 (en) * 1996-06-19 2001-03-27 Daikin Industries, Ltd. Coating composition, coating film, and method for producing coating film
US6685717B1 (en) * 2001-08-15 2004-02-03 Flovector, L.L.C. Scalpel system for treating carpal tunnel syndrome
US20070288043A1 (en) * 2006-06-08 2007-12-13 Rehnke Robert D Instruments and method for minimally invasive carpal tunnel release
US7549972B2 (en) * 2005-08-10 2009-06-23 Insight Instruments, Inc. Tool for extracting vitreous samples from an eye
US7655020B2 (en) * 2004-11-19 2010-02-02 Jörg Wenzler Medizintechnik GmbH Surgical punching instrument
US7811225B2 (en) * 1993-09-13 2010-10-12 Tyco Healthcare Group Lp Optical trocar
US8672960B2 (en) * 2010-07-14 2014-03-18 SEG-Way Orthopaedics, Inc Method and apparatus for endoscopic ligament release
US8992424B2 (en) * 2007-02-09 2015-03-31 Skeletal Dynamics Llc Endo-surgical device and method

Family Cites Families (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537451A (en) * 1966-10-26 1970-11-03 Deseret Pharma Intravenous catheter unit with releasable inserter means
US3863631A (en) * 1970-06-02 1975-02-04 Affiliated Hospital Prod Method of applying and securing a needle
US3827434A (en) * 1972-06-21 1974-08-06 Vicra Sterile Inc Catheter insertion device
US3941121A (en) * 1974-12-20 1976-03-02 The University Of Cincinnati Focusing fiber-optic needle endoscope
US4246897A (en) 1979-02-15 1981-01-27 Rudolph Muto Tracheotomy obturator and tube flange
US4324236A (en) * 1979-12-03 1982-04-13 Whitman Medical Corp. Fitting for use in performing a vascular puncture
US4364391A (en) 1980-11-14 1982-12-21 Toye Frederic J Tracheostomy apparatus and method
US4596559A (en) 1984-11-02 1986-06-24 Fleischhacker John J Break-away handle for a catheter introducer set
JPS6349125A (en) * 1986-08-16 1988-03-01 奥津 一郎 Guide pipe for endoscope
US4683879A (en) * 1986-10-20 1987-08-04 Tudor Williams R Dual function connector for use with endotracheal apparatus
US4962770A (en) * 1987-09-18 1990-10-16 John M. Agee Surgical method
US5141497A (en) * 1989-06-06 1992-08-25 Becton, Dickinson And Company Apparatus and method for an introducer
US5197971A (en) * 1990-03-02 1993-03-30 Bonutti Peter M Arthroscopic retractor and method of using the same
US5295974A (en) * 1991-01-07 1994-03-22 Laughlin D Michael O Shielded hypodermic needle with I.V. cannula
US5098392A (en) 1991-06-28 1992-03-24 Fleischhacker John J Locking dilator for peel away introducer sheath
US5167634A (en) 1991-08-22 1992-12-01 Datascope Investment Corp. Peelable sheath with hub connector
US5282816A (en) * 1991-09-20 1994-02-01 Milres Corporation Apparatus for subligamentous endoscopic transverse carpal ligament release surgery
US5217005A (en) 1991-11-01 1993-06-08 Weinstein James D Apparatus for performing percutaneous tracheostomies and cricothyroidectomies
US5273024A (en) * 1992-01-22 1993-12-28 Linvatec Corporation Method and apparatus for performing endoscopic surgery
US5253659A (en) * 1992-07-14 1993-10-19 Endoscopic Heel Systems, Inc. Method and system for performing endoscopic surgery at locations where tissue inserts into bone
US5620446A (en) * 1992-07-14 1997-04-15 Endoscopic Heel Systems, Inc. Surgical apparatus for performing endoscopic surgery at locations where tissue inserts into bone
US5354302A (en) * 1992-11-06 1994-10-11 Ko Sung Tao Medical device and method for facilitating intra-tissue visual observation and manipulation of distensible tissues
US5366465A (en) 1992-12-07 1994-11-22 M. Ather Mirza Endoscopic surgical procedure and instrument for implementation thereof
DE69415621T2 (en) * 1993-09-21 1999-06-17 United States Surgical Corp Surgical instrument for expanding body tissues
US5645519A (en) * 1994-03-18 1997-07-08 Jai S. Lee Endoscopic instrument for controlled introduction of tubular members in the body and methods therefor
US5489273A (en) * 1994-10-07 1996-02-06 Tfx Medical, Incorporated Introducer device and methods of use thereof
CA2169220A1 (en) * 1995-03-16 1996-09-17 Greg L. Brimhall Control forward introducer needle and catheter assembly
US5649946A (en) * 1995-03-20 1997-07-22 Bramlet; Dale G. Carpal tunnel medical instrument
US5827312A (en) * 1995-06-09 1998-10-27 Instratek Incorporated Marked cannula
US5665093A (en) * 1995-12-11 1997-09-09 Atkins; Joseph R. Surgical implantation method and apparatus
US5730749A (en) * 1995-12-15 1998-03-24 Battenfield; Harold L. Carpal tunnel surgery instruments
US5743882A (en) * 1996-03-08 1998-04-28 Luther Medical Products, Inc. Needle blunting assembly for use with intravascular introducers
EP0798735B1 (en) * 1996-03-29 2004-07-28 STMicroelectronics S.r.l. Row decoding circuit for a semiconductor non-volatile electrically programmable memory, and corresponding method
US5910105A (en) * 1997-04-14 1999-06-08 C.R. Bard, Inc. Control handle for an endoscope
US6139532A (en) * 1998-09-15 2000-10-31 Becton, Dickinson And Company Clamping wing for catheter introducer
US6042538A (en) * 1998-11-18 2000-03-28 Emory University Device for endoscopic vessel harvesting
US6283948B1 (en) * 1999-07-13 2001-09-04 Ethicon, Inc. Trocar obturator having grooved passageway
US6402677B1 (en) * 1999-12-17 2002-06-11 C.R. Bard, Inc. Brachytherapy seed needle with window
US6685677B2 (en) * 2000-09-07 2004-02-03 Christopher H. Green Needle shield converting to a needleless needle
US6613065B2 (en) * 2001-03-01 2003-09-02 Karl Storz Gmbh & Co. Kg Device for guiding a medical instrument
JP4387105B2 (en) * 2001-03-04 2009-12-16 アイシーユー・メディカル・インコーポレーテッド Infusion hub assembly and fluid line cutting system
CA2363473C (en) * 2001-11-20 2010-10-19 Marc G. Morin Anoscope
US6695772B1 (en) * 2001-11-26 2004-02-24 Visionary Biomedical, Inc. Small diameter cannula devices, systems and methods
DE60315460T2 (en) * 2002-06-28 2008-04-30 Cook Critical Care, Bloomington INTRODUCTION SLEEVE
US7041115B2 (en) * 2002-11-18 2006-05-09 A.M. Surgical, Inc. Endoscopic surgical procedure
US8252011B1 (en) * 2003-04-21 2012-08-28 Osteomed Llc Minimally invasive technique for performing plantar fasciotomies and surgical instrument for use in such a technique
US7150725B2 (en) * 2003-12-17 2006-12-19 Becton Dickinson And Company Passive activated safety blood collection set
US20090118580A1 (en) * 2004-07-02 2009-05-07 Wei-Zen Sun Image-type intubation-aiding device
FR2881657B1 (en) * 2005-01-14 2007-05-18 Mokhtar Chawki NEEDLE FASTENING AND PROTECTIVE DRESSING
US20070270647A1 (en) * 2006-05-19 2007-11-22 Ams Research Corporation Handle for Multifunction Endoscope

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288357A (en) * 1977-05-10 1981-09-08 Sumitomo Chemical Co. Ltd. Coating composition and method for the improvement of surface hardness of article by the use thereof
US4190699A (en) * 1977-05-10 1980-02-26 Sumitomo Chemical Company, Limited Method for the improvement of surface hardness of article by coating
US4482656A (en) * 1983-09-29 1984-11-13 Battelle Development Corporation Method for manufacturing a composition for coating substrates with an abrasion-resistant transparent and translucent film
US4963147A (en) * 1987-09-18 1990-10-16 John M. Agee Surgical instrument
US5179963A (en) * 1991-10-11 1993-01-19 Berger J Lee Percutaneous carpal tunnel plasty method
US5325883A (en) * 1991-11-04 1994-07-05 Orr Terrence R Device and method for carpal tunnel release
US5323765A (en) * 1991-12-03 1994-06-28 Brown Michael G Apparatus and method for endoscopic surgery
US7811225B2 (en) * 1993-09-13 2010-10-12 Tyco Healthcare Group Lp Optical trocar
US5620456A (en) * 1995-10-20 1997-04-15 Lasersurge, Inc. Trocar assembly
US5908433A (en) * 1996-05-10 1999-06-01 Stryker Corporation Carpal tunnel knife
US6207236B1 (en) * 1996-06-19 2001-03-27 Daikin Industries, Ltd. Coating composition, coating film, and method for producing coating film
US5968061A (en) * 1998-04-27 1999-10-19 Theodor Esser Endoscopic surgical instrument for the implementation of endoscopic surgical procedures
US6685717B1 (en) * 2001-08-15 2004-02-03 Flovector, L.L.C. Scalpel system for treating carpal tunnel syndrome
US7655020B2 (en) * 2004-11-19 2010-02-02 Jörg Wenzler Medizintechnik GmbH Surgical punching instrument
US7549972B2 (en) * 2005-08-10 2009-06-23 Insight Instruments, Inc. Tool for extracting vitreous samples from an eye
US20070288043A1 (en) * 2006-06-08 2007-12-13 Rehnke Robert D Instruments and method for minimally invasive carpal tunnel release
US8992424B2 (en) * 2007-02-09 2015-03-31 Skeletal Dynamics Llc Endo-surgical device and method
US8672960B2 (en) * 2010-07-14 2014-03-18 SEG-Way Orthopaedics, Inc Method and apparatus for endoscopic ligament release

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10849644B2 (en) 2009-03-09 2020-12-01 A.M. Surgical, Inc. Surgical device
US11259829B2 (en) 2014-09-18 2022-03-01 Mayo Foundation For Medical Education And Research Soft tissue cutting device and methods of use
US11877766B2 (en) 2014-09-18 2024-01-23 Mayo Foundation For Medical Education And Research Soft tissue cutting device and methods of use
US11666356B2 (en) 2014-09-18 2023-06-06 Mayo Foundation For Medical Education And Research Soft tissue cutting device and methods of use
US10357272B2 (en) 2014-09-18 2019-07-23 Mayo Foundation For Medical Education And Research Soft tissue cutting device and methods of use
US9592071B2 (en) * 2014-10-27 2017-03-14 J. Lee Berger Grooved director with instrument guide
US20160113671A1 (en) * 2014-10-27 2016-04-28 J. Lee Berger Grooved director with instrument guide
US10448965B2 (en) 2014-11-12 2019-10-22 Manuel F. DaSilva Systems, methods, and devices for endoscopic nerve release
US11529162B2 (en) 2014-11-12 2022-12-20 Manuel F. DaSilva Systems, methods, and devices for endoscopic nerve release
US10806481B2 (en) 2015-10-02 2020-10-20 Nanice Medical Solutions Llc Surgical device for use in endoscopic carpal tunnel release (ECTR), endoscopic cubital tunnel release (ECuTR), and endoscopic plantar fasciitis release (EPFR)
US11033291B2 (en) 2015-10-02 2021-06-15 Nanice Medical Solutions Llc Surgical device for use in endoscopic carpal tunnel release (ECTR), endoscopic cubital tunnel release (ECuTR), and endoscopic plantar fasciitis release (EPFR)
US10201372B2 (en) 2016-08-22 2019-02-12 A.M. Surgical, Inc. Cannula for a surgical instrument
US11096720B2 (en) 2016-08-22 2021-08-24 A.M. Surgical, Inc. Cannula for a surgical instrument
US11051848B2 (en) 2016-08-22 2021-07-06 A.M. Surgical, Inc. Cannula for a surgical instrument
WO2018038704A1 (en) * 2016-08-22 2018-03-01 A.M. Surgical, Inc. Cannula for a surgical instrument
WO2018080487A1 (en) * 2016-10-26 2018-05-03 A.M. Surgical, Inc. Surgical device
US10864055B2 (en) 2017-10-13 2020-12-15 Sonex Health, Inc. Tray for a soft tissue cutting device and methods of use
US11890119B2 (en) 2017-10-13 2024-02-06 Sonex Health, Inc. and Mayo Foundation for Medical Education and Research Tray for a soft tissue cutting device and methods of use
USD989961S1 (en) 2021-04-30 2023-06-20 Sonex Health, Inc. Soft tissue cutting device

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US20140088354A1 (en) 2014-03-27
WO2010104729A3 (en) 2011-01-27
US20100228085A1 (en) 2010-09-09
US10433862B2 (en) 2019-10-08
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US8827893B2 (en) 2014-09-09
US10010337B2 (en) 2018-07-03

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