CA2396535C - System and method for stabilizing the human spine with a bone plate - Google Patents
System and method for stabilizing the human spine with a bone plate Download PDFInfo
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- CA2396535C CA2396535C CA002396535A CA2396535A CA2396535C CA 2396535 C CA2396535 C CA 2396535C CA 002396535 A CA002396535 A CA 002396535A CA 2396535 A CA2396535 A CA 2396535A CA 2396535 C CA2396535 C CA 2396535C
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- ring
- fastener
- plate
- hole
- head
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
- A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8875—Screwdrivers, spanners or wrenches
- A61B17/8877—Screwdrivers, spanners or wrenches characterised by the cross-section of the driver bit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/8875—Screwdrivers, spanners or wrenches
- A61B17/8894—Screwdrivers, spanners or wrenches holding the implant into or through which the screw is to be inserted
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S606/00—Surgery
- Y10S606/915—Toolkit for installing or removing cortical plate
Abstract
A spinal plate system (20) and method for fixation of the human spine is provided. In an embodiment, the spinal fixation system (20) includes a plate (22), a coupling member (30), a locking system (116) for substantially locking the coupling member (30) in a desired position, and an anchoring system (100) to secure the coupling member in the locking system (116). The plate (22) may have a hole (24) that allows the coupling member (30) to couple to the plate (20) with a bone. At least a portion of the coupling member (30) may swivel in the hole so that a bottom end of the member may extend at a plurality of angles substantially oblique to the plate (22). The locking system (116) may lock the coupling member (30) in desired position relative to the plate (22). The anchoring system (100) may secure the coupling member (30) in the locking system (116) to inhibit the coupling system from detaching from the locking system when stressed. An assembly tool (114) may be used to engage and disengage the anchoring system (100) during the installation or removal of the spinal fixation system.
Description
TITLE: SYSTEM AND METHOD FOR STABILIZING THE HUMAN SPINE WITH A BONE PLATE
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention generally relates to spinal fixation systems and the like. The present invention also generally relates to a spinal plate system that includes a mechanism for fixably attaching heads of fasteners to a spinal plate.
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention generally relates to spinal fixation systems and the like. The present invention also generally relates to a spinal plate system that includes a mechanism for fixably attaching heads of fasteners to a spinal plate.
2. Description of the Related Art The use of spinal fixation plates for correction of spinal deformities and for fusion of vertebrae is well known. Typically, a rigid plate is positioned to span bones or bone segments that need to be immobilized with respect to one another. Bone screws may be used to fasten the plate to the bones. Spinal plating systems are conunonly used to correct problems in the lumbar and cervical portions of the spine, and are often installed posterior or anterior to the spine.
Spinal plate fixation to the cervical portion of the spine may be risky because complications during surgery may cause injury to vital organs, such as the brain stem or the spinal cord. When attaching a fixation plate to a bone, bone screws are placed either bi-cortically (i.e., entirely through the vertebrae such that a portion of the fastener extends into the spinal cord region) or uni-cortically (i.e., the fastener extends into but not through the vertebrae). Uni-cortical positioning of bone screws has grown in popularity because it is generally safer to use. Bi-cortical fasteners are intended to breach the distal cortex for maximum anchorage into the bone; however, this placement of the fasteners may place distal soft tissue structures at risk.
Fastener placement is particularly important in anterior cervical plate procedures because of the presence of the spinal cord opposite the distal cortex.
Unfortunately, uni-cortical fasteners may move from their desired positions because of the soft texture of the bone marrow. In fact, the portion of the bone surrounding such fasteners may fail to maintain the fasteners in their proper positions. The result is backout of the fastener.
Backout of the fastener is particularly problematic when two fasteners are implanted perpendicular to the plate. When the fasteners are placed in such a manner, backout may occur as a result of bone failure over a region that is the size of the outer diameter of the fastener threads. To overcome this problem, two fasteners may be angled in converging or diverging directions with respect to each other within the bone. The amount of bone that is required to fail before backout may occur is increased by this configuration as compared to fasteners that are implanted in parallel. Although positioning convergent or divergent fasteners in a bone reduces the risk of backout, backout may still occur.
Backout may damage intemal tissue structures and cause complications if the dislocated fastener penetrates the tissue structures. For example, if backout occurs, the fastener might breach the esophageal wall of the patient. Such a breach may permit bacterial contamination of surrounding tissues, including the critical nerves in and around the spinal cord. Such a breach could be fatal.
In an attempt to reduce the risk of damage to internal tissue structures, some cervical fastener plate systems have uni-cortical fasteners that attach both to the bone and to the plate. If a fastener does backout, the fastener remains connected to the plate so that it does not contact internal tissue structures. U.S. Patent No.
5,364,399 to Lowery et al. describes one such system .
The Lowerv et al. plating system includes a locking fastener at each end of the plate. The locking fastener engages the head of the bone screw to trap the fastener within a recess of the plate.
Since the lockine fastener is positioned over portions of the bone screws, the locking fastener may extend above the upper surface of the plate. Thus, the lockin, fastener may come into contact with intemal tissue structures. such as the esophagus.
Another plating system that includes a fastener-to-plate locking mechanism is the AlineTM Anterior Cervical Platino System sold by Smith & Nephew Richards Inc. in :Vtemphis, Tennessee. A description of this svstem can be found in the Aline'" Anterior Cervical Plating System Surgical Technique Nfanual by Foiev, K.T. et al., available from Stnith & Nephew Richards Inc., 9196, pp. 1-16 .
The bone screws of this system have openings within each bone screw head for receiving a lock fastener coaxially therein. Each bone screw may be inserted into a bone such that the head of the fastener is positioned within a hole of a plate placed adjacent to the bone. The head of each bone screw is slotted so that portions of the head are deflected toward the plate during insertion of the lock fastener within the opening of the bone screNt-. Positiorun2 and insertinq a lock fastener within the opening can be difficult due to the small size of the lock fastener. The suroeon may be unable to hold onto the lock fastener without dropping it. If a lock fastener falls '0 into the surQical wound. it mav be difficult to ren-ieve. In some instances, the lock fastener mav be unretrievable.
SUMNLARY OF THE LN-VEVTION
An implant system may be used to immobilize a portion of a human spine. The implant system may include a plate comprising end holes, midline holes, fasteners, and expandable,~contractible rings. The fasteners and 25 rinss may include mechanisms for anchoring or locking the fastener heads within the rings to inhibit backout of the fastener.
The invention provides a bone plate system comprising:
a plate configured to stabilize a bone structure;
a hole passing through the plate;
a ring positionable within the hole, the ring comprising a deflectable portion;
a fastener positionable through the ring such that a head of the fastener engages the ring, the fastener configured to couple the plate to a bone;
wherein said ring is configured to move within the hole to allow a shank of the fastener to be inserted into the bone at an angle that is oblique to the plate;
and wherein the deflectable portion of the ring is configured to deflect outwards when the head is initially positioned in the ring and wherein the deflectable portion is configured to deflect inwards after passage of a portion of the head into the ring to couple the fastener to the ring so that removal of the fastener from the plate is inhibited.
The end holes extend from an upper surface to a lower surface of the plate.
The end holes may be disposed in pairs at opposite ends of the plate. Each end hole receives at least a portion of a head of a fastener.
Herein. "fastener" nleans anv elongated member. threaded or non-threaded, which is securable within a bone.
Fasteners include. but are not ltmited to scre s, nails, rivets. trocars, pins, and barbs. The fastener may be a bone screx~. A fastener mav have a fastener head. The fastener head ttipically includes an openin adapted to mate tth a tool. The tool ailor~s the tnsertiort of the fastener into a bone Each end hole may also be sphericall\ contoured to rerr.tit the taste ner to be "obliyuelv an=ulateu" relatt~ e to the piste.
Herein. "obliqu:ly angulated" rneans that the fastener nta~ be posinoned ttuou<zhout a wide ran,e ot an_les relatne to an axis that is perpendicular to the piate. Obitquely anwuiaano a tastener into a bone may reduce the risk of backout of ttie fastener.
2a The expandable/contractible rings may be sized so that a ring seats within an end hole between the plate and the fastener. The inner surface of each ring may be shaped to mate with a fastener head while the outer surface may be shaped to mate with the inside surface of an end hole. The outer surface of each fastener head may be tapered so that an upper portion of the head is larger than a lower portion of the head. The inner surface of the ring may have a taper that generally corresponds to the taper of the fastener head.
Each ring may also have a gap that extends vertically through the ring to make the ring more readily expandable and contractible. During insertion of the fastener head into the ring, the fastener head exerts force against the ring to expand the ring against the inner surface of the hole.
Expanding the ring against the inner surface of the hole may securely fix the fastener to the plate.
The fastener head and the ring may include a locking mechanism to attach the fastener head to the plate.
The locking mechanism may inhibit backout of the fastener head from the ring if the fastener loosens in the bone.
The locking mechanism may also inhibit the fastener head from contacting adjacent tissue structures since the locking mechanism attaches the fastener head to the plate. In some embodiments, there is tolerance for some freedom of movement in an axial direction between a locking mechanism and a fastener head. The availability of some axial movement may allow the fastener to back out or loosen slightly from the bone during a normal period of adjustment after implantation of a spinal fixation system.
Midline holes may be formed through the plate at various locations along a midline axis extending across the plate. The surface of the plate that surrounds each midline hole may be tapered. Further, the heads of fasteners that may be positioned within the plates may have tapered outer surfaces that generally correspond to the tapered surface of the plate. Thus, when such a fastener head is inserted into a midline hole, the shape of the plate causes the fastener to become fixably attached to the plate in a position that is substantially perpendicular to the plate.
Midline holes may be used to attach a bone graft to the bore plate. Oblique angulation of fasteners positioned within the midline holes may not be required.
The bone plate may have one or more spikes located on the surface of the plate that faces the spinal colunm. Spikes may be disposed in pairs at opposite ends of the plate proximate the end holes. The spikes may be tapped into the bone to help inhibit the bone plate from slipping during surgical implantation.
Prior to surgical implantation of the spinal plate system, the expandable/contractible rings may be placed within the end holes of the plate. The plate may then be positioned adjacent to a portion of the spine that requires spinal fixation. Holes may be drilled and/or tapped at desired angles into portions of the bone underlying the end holes of a plate. Fasteners may be inserted through the end holes into the holes in the bone. The heads of the fasteners may be positioned within the end holes such that the rings surround at least a portion of the heads. The rings may lock the fasteners in place without occupying regions outside of the end holes. Further, since the rings are pre-positioned within the end holes, surgeons do not have to worry that they may drop the rings during insertion of the rings into the end holes of the plate.
Spinal plate fixation to the cervical portion of the spine may be risky because complications during surgery may cause injury to vital organs, such as the brain stem or the spinal cord. When attaching a fixation plate to a bone, bone screws are placed either bi-cortically (i.e., entirely through the vertebrae such that a portion of the fastener extends into the spinal cord region) or uni-cortically (i.e., the fastener extends into but not through the vertebrae). Uni-cortical positioning of bone screws has grown in popularity because it is generally safer to use. Bi-cortical fasteners are intended to breach the distal cortex for maximum anchorage into the bone; however, this placement of the fasteners may place distal soft tissue structures at risk.
Fastener placement is particularly important in anterior cervical plate procedures because of the presence of the spinal cord opposite the distal cortex.
Unfortunately, uni-cortical fasteners may move from their desired positions because of the soft texture of the bone marrow. In fact, the portion of the bone surrounding such fasteners may fail to maintain the fasteners in their proper positions. The result is backout of the fastener.
Backout of the fastener is particularly problematic when two fasteners are implanted perpendicular to the plate. When the fasteners are placed in such a manner, backout may occur as a result of bone failure over a region that is the size of the outer diameter of the fastener threads. To overcome this problem, two fasteners may be angled in converging or diverging directions with respect to each other within the bone. The amount of bone that is required to fail before backout may occur is increased by this configuration as compared to fasteners that are implanted in parallel. Although positioning convergent or divergent fasteners in a bone reduces the risk of backout, backout may still occur.
Backout may damage intemal tissue structures and cause complications if the dislocated fastener penetrates the tissue structures. For example, if backout occurs, the fastener might breach the esophageal wall of the patient. Such a breach may permit bacterial contamination of surrounding tissues, including the critical nerves in and around the spinal cord. Such a breach could be fatal.
In an attempt to reduce the risk of damage to internal tissue structures, some cervical fastener plate systems have uni-cortical fasteners that attach both to the bone and to the plate. If a fastener does backout, the fastener remains connected to the plate so that it does not contact internal tissue structures. U.S. Patent No.
5,364,399 to Lowery et al. describes one such system .
The Lowerv et al. plating system includes a locking fastener at each end of the plate. The locking fastener engages the head of the bone screw to trap the fastener within a recess of the plate.
Since the lockine fastener is positioned over portions of the bone screws, the locking fastener may extend above the upper surface of the plate. Thus, the lockin, fastener may come into contact with intemal tissue structures. such as the esophagus.
Another plating system that includes a fastener-to-plate locking mechanism is the AlineTM Anterior Cervical Platino System sold by Smith & Nephew Richards Inc. in :Vtemphis, Tennessee. A description of this svstem can be found in the Aline'" Anterior Cervical Plating System Surgical Technique Nfanual by Foiev, K.T. et al., available from Stnith & Nephew Richards Inc., 9196, pp. 1-16 .
The bone screws of this system have openings within each bone screw head for receiving a lock fastener coaxially therein. Each bone screw may be inserted into a bone such that the head of the fastener is positioned within a hole of a plate placed adjacent to the bone. The head of each bone screw is slotted so that portions of the head are deflected toward the plate during insertion of the lock fastener within the opening of the bone screNt-. Positiorun2 and insertinq a lock fastener within the opening can be difficult due to the small size of the lock fastener. The suroeon may be unable to hold onto the lock fastener without dropping it. If a lock fastener falls '0 into the surQical wound. it mav be difficult to ren-ieve. In some instances, the lock fastener mav be unretrievable.
SUMNLARY OF THE LN-VEVTION
An implant system may be used to immobilize a portion of a human spine. The implant system may include a plate comprising end holes, midline holes, fasteners, and expandable,~contractible rings. The fasteners and 25 rinss may include mechanisms for anchoring or locking the fastener heads within the rings to inhibit backout of the fastener.
The invention provides a bone plate system comprising:
a plate configured to stabilize a bone structure;
a hole passing through the plate;
a ring positionable within the hole, the ring comprising a deflectable portion;
a fastener positionable through the ring such that a head of the fastener engages the ring, the fastener configured to couple the plate to a bone;
wherein said ring is configured to move within the hole to allow a shank of the fastener to be inserted into the bone at an angle that is oblique to the plate;
and wherein the deflectable portion of the ring is configured to deflect outwards when the head is initially positioned in the ring and wherein the deflectable portion is configured to deflect inwards after passage of a portion of the head into the ring to couple the fastener to the ring so that removal of the fastener from the plate is inhibited.
The end holes extend from an upper surface to a lower surface of the plate.
The end holes may be disposed in pairs at opposite ends of the plate. Each end hole receives at least a portion of a head of a fastener.
Herein. "fastener" nleans anv elongated member. threaded or non-threaded, which is securable within a bone.
Fasteners include. but are not ltmited to scre s, nails, rivets. trocars, pins, and barbs. The fastener may be a bone screx~. A fastener mav have a fastener head. The fastener head ttipically includes an openin adapted to mate tth a tool. The tool ailor~s the tnsertiort of the fastener into a bone Each end hole may also be sphericall\ contoured to rerr.tit the taste ner to be "obliyuelv an=ulateu" relatt~ e to the piste.
Herein. "obliqu:ly angulated" rneans that the fastener nta~ be posinoned ttuou<zhout a wide ran,e ot an_les relatne to an axis that is perpendicular to the piate. Obitquely anwuiaano a tastener into a bone may reduce the risk of backout of ttie fastener.
2a The expandable/contractible rings may be sized so that a ring seats within an end hole between the plate and the fastener. The inner surface of each ring may be shaped to mate with a fastener head while the outer surface may be shaped to mate with the inside surface of an end hole. The outer surface of each fastener head may be tapered so that an upper portion of the head is larger than a lower portion of the head. The inner surface of the ring may have a taper that generally corresponds to the taper of the fastener head.
Each ring may also have a gap that extends vertically through the ring to make the ring more readily expandable and contractible. During insertion of the fastener head into the ring, the fastener head exerts force against the ring to expand the ring against the inner surface of the hole.
Expanding the ring against the inner surface of the hole may securely fix the fastener to the plate.
The fastener head and the ring may include a locking mechanism to attach the fastener head to the plate.
The locking mechanism may inhibit backout of the fastener head from the ring if the fastener loosens in the bone.
The locking mechanism may also inhibit the fastener head from contacting adjacent tissue structures since the locking mechanism attaches the fastener head to the plate. In some embodiments, there is tolerance for some freedom of movement in an axial direction between a locking mechanism and a fastener head. The availability of some axial movement may allow the fastener to back out or loosen slightly from the bone during a normal period of adjustment after implantation of a spinal fixation system.
Midline holes may be formed through the plate at various locations along a midline axis extending across the plate. The surface of the plate that surrounds each midline hole may be tapered. Further, the heads of fasteners that may be positioned within the plates may have tapered outer surfaces that generally correspond to the tapered surface of the plate. Thus, when such a fastener head is inserted into a midline hole, the shape of the plate causes the fastener to become fixably attached to the plate in a position that is substantially perpendicular to the plate.
Midline holes may be used to attach a bone graft to the bore plate. Oblique angulation of fasteners positioned within the midline holes may not be required.
The bone plate may have one or more spikes located on the surface of the plate that faces the spinal colunm. Spikes may be disposed in pairs at opposite ends of the plate proximate the end holes. The spikes may be tapped into the bone to help inhibit the bone plate from slipping during surgical implantation.
Prior to surgical implantation of the spinal plate system, the expandable/contractible rings may be placed within the end holes of the plate. The plate may then be positioned adjacent to a portion of the spine that requires spinal fixation. Holes may be drilled and/or tapped at desired angles into portions of the bone underlying the end holes of a plate. Fasteners may be inserted through the end holes into the holes in the bone. The heads of the fasteners may be positioned within the end holes such that the rings surround at least a portion of the heads. The rings may lock the fasteners in place without occupying regions outside of the end holes. Further, since the rings are pre-positioned within the end holes, surgeons do not have to worry that they may drop the rings during insertion of the rings into the end holes of the plate.
In one embodiment, a locking mechanism secures a fastener head to a ring. A
locking mechanism may have a top and one or more flexible arms that angle downwards and outwards from the top. The ends of the arms have prongs that are substantially parallel to the top of the locking mechanism. A locking mechanism in a compressed configuration, fits into an opening formed in the head of a fastener. The prongs of the locking mechanism fit within holes located near the bottom of the opening. The holes extend from the outer surface of the head to the opening. When the prongs are positioned in the holes, the prongs extend through the holes so that the locking mechanism is in an extended configuration. The prongs that extend out of the head of the fastener fit within a groove on the inner surface of the ring to enhance the connection between the fastener and the ring.
The locking mechanism may be inserted in the fastener head prior to the surgical procedure to avoid the risk of dropping the locking mechanism during the surgical procedure. An insertion and extraction tool retracts the prongs on the locking mechanism into the head during insertion or extraction of a fastener. The tool may include a handle, a shaft, and a hollow driver head shaped to match a drive section of the opening on the fastener head.
Inserting the driver head into the opening slides the head over the locking mechanism and compresses the shafts of the locking mechanism. Compressing the shafts of the locking mechanism retracts the prongs into the fastener head. To insert a fastener into a bone, the user inserts the fastener into the bone until the head is fully inserted in the ring. Removing the driver head from the opening causes the shafts of the locking mechanism to expand outwards so that the prongs extend out of the holes into the fastener head.
To remove a fastener that has a locking mechanism, the user inserts the driver head of the insertion and extraction tool into the opening of the fastener head. The driver head compresses the shafts of the locking mechanism and causes the prongs to retract within the fastener head. The user may then remove the fastener from the bone.
In another embodiment, a tapered fastener head locks into a ring by one or more fingers on the ring that snap into grooves on the fastener head. L-shaped slots cut into the top of the ring may define the fmgers. The fingers have springlike action so that the fmgers snap into the grooves on the fastener head when a fastener head is inserted into the ring. As the fastener head passes into the ring, the tapered outer surface of the head expands the ring against the inner surface of the plate. When the groove on the fastener head reaches the fingers, the fmgers snap into the groove, fixing the fastener in the ring and helping to inhibit backout.
In another embodiment, a fastener head locks to a ring by one or more ridges on the ring that snap into grooves on the fastener head. Notches cut into the top of the ring may form paddles. A ridge may extend along an inside surface of each paddle proximate the top of the ring. The paddles have a springlike action so that the ridges snap into the grooves on the fastener head during insertion of the fastener head into the ring. The ridges of the ring residing within a groove of the fastener head may fix the fastener in the ring and help inhibit backout of the fastener.
An extraction tool module fits over an insertion tool and allows the retraction of the ring ridges from the fastener head. The insertion tool includes a handle, a shaft, and a driver head shaped to match the opening on the fastener head. The extraction module slides over the shaft of the insertion tool. The extraction module may include a handle and an extraction head. The extraction head may include a tip that slides over the fastener head and contacts the ends of the paddles. The outer surface of the tip tapers. As the extraction module is pushed down, the tapered surface of the tip forces the paddles outwards and disengages the ridges on the paddles from the grooves on the fastener head. Disengaging the ridges on the paddles from the grooves on the fastener head allows the fastener to be backed out of the bone.
Using a locking mechanism between the fastener head and the ring may result in a strong connection between the fastener and the plate. Even if the shank of a fastener loosens within the bone, the fastener head will tend to remain within the hole of the plate so as not to protrude from the plate into surrounding body tissue.
Allowing some axial freedom of movement for the fastener head in the ring may allow the fastener to back out slightly during an adjustment period after installation of the spinal fixation system.
BRIEF DESCRIPTION OF THE DRAWINGS
Further advantages of the present invention will become apparent to those skilled in the art with the benefit of the following detailed description of embodiments and upon reference to the accompanying drawings in which:
Figure 1 is a top view of an embodiment of a spinal plating system that may be used for fixation of the human spine.
Figure 2 is a partial cross-sectional view of the spinal plating system taken substantially along line 2-2 of Figure 1. The fastener is not shown in section.
Figure 3 is a partial cross-sectional view of the spinal plating system taken substantially along line 3-3 of Figure 1, wherein the fasteners are in a converging orientation within end holes of a plate. The fasteners are not shown in section.
Figure 4 is a partial cross-sectional view of the spinal plating system taken substantially along line 4-4 of Figure 1, wherein the fasteners are in a diverging orientation within end holes of a plate 5, the fasteners are not shown in section.
Figure 5 depicts an embodiment of a fastener with grooves and holes to engage a locking mechanism.
Figure 6 is a partial front view of a fastener with holes in the fastener head.
Figure 7 is a top view of a fastener head having grooves for engaging a locking mechanism.
Figure 8 is a top view of an embodiment of a fastener head with a hexagonal opening and holes to engage a locking mechanism.
Figure 9 is a perspective view of a locking mechanism.
Figure 10 is a perspective view of a ring that may be used with a fastener and a locking mechanism.
Figure 11 is a partial sectional view of an insertion/extraction tool for fasteners with locking mechanisms.
locking mechanism may have a top and one or more flexible arms that angle downwards and outwards from the top. The ends of the arms have prongs that are substantially parallel to the top of the locking mechanism. A locking mechanism in a compressed configuration, fits into an opening formed in the head of a fastener. The prongs of the locking mechanism fit within holes located near the bottom of the opening. The holes extend from the outer surface of the head to the opening. When the prongs are positioned in the holes, the prongs extend through the holes so that the locking mechanism is in an extended configuration. The prongs that extend out of the head of the fastener fit within a groove on the inner surface of the ring to enhance the connection between the fastener and the ring.
The locking mechanism may be inserted in the fastener head prior to the surgical procedure to avoid the risk of dropping the locking mechanism during the surgical procedure. An insertion and extraction tool retracts the prongs on the locking mechanism into the head during insertion or extraction of a fastener. The tool may include a handle, a shaft, and a hollow driver head shaped to match a drive section of the opening on the fastener head.
Inserting the driver head into the opening slides the head over the locking mechanism and compresses the shafts of the locking mechanism. Compressing the shafts of the locking mechanism retracts the prongs into the fastener head. To insert a fastener into a bone, the user inserts the fastener into the bone until the head is fully inserted in the ring. Removing the driver head from the opening causes the shafts of the locking mechanism to expand outwards so that the prongs extend out of the holes into the fastener head.
To remove a fastener that has a locking mechanism, the user inserts the driver head of the insertion and extraction tool into the opening of the fastener head. The driver head compresses the shafts of the locking mechanism and causes the prongs to retract within the fastener head. The user may then remove the fastener from the bone.
In another embodiment, a tapered fastener head locks into a ring by one or more fingers on the ring that snap into grooves on the fastener head. L-shaped slots cut into the top of the ring may define the fmgers. The fingers have springlike action so that the fmgers snap into the grooves on the fastener head when a fastener head is inserted into the ring. As the fastener head passes into the ring, the tapered outer surface of the head expands the ring against the inner surface of the plate. When the groove on the fastener head reaches the fingers, the fmgers snap into the groove, fixing the fastener in the ring and helping to inhibit backout.
In another embodiment, a fastener head locks to a ring by one or more ridges on the ring that snap into grooves on the fastener head. Notches cut into the top of the ring may form paddles. A ridge may extend along an inside surface of each paddle proximate the top of the ring. The paddles have a springlike action so that the ridges snap into the grooves on the fastener head during insertion of the fastener head into the ring. The ridges of the ring residing within a groove of the fastener head may fix the fastener in the ring and help inhibit backout of the fastener.
An extraction tool module fits over an insertion tool and allows the retraction of the ring ridges from the fastener head. The insertion tool includes a handle, a shaft, and a driver head shaped to match the opening on the fastener head. The extraction module slides over the shaft of the insertion tool. The extraction module may include a handle and an extraction head. The extraction head may include a tip that slides over the fastener head and contacts the ends of the paddles. The outer surface of the tip tapers. As the extraction module is pushed down, the tapered surface of the tip forces the paddles outwards and disengages the ridges on the paddles from the grooves on the fastener head. Disengaging the ridges on the paddles from the grooves on the fastener head allows the fastener to be backed out of the bone.
Using a locking mechanism between the fastener head and the ring may result in a strong connection between the fastener and the plate. Even if the shank of a fastener loosens within the bone, the fastener head will tend to remain within the hole of the plate so as not to protrude from the plate into surrounding body tissue.
Allowing some axial freedom of movement for the fastener head in the ring may allow the fastener to back out slightly during an adjustment period after installation of the spinal fixation system.
BRIEF DESCRIPTION OF THE DRAWINGS
Further advantages of the present invention will become apparent to those skilled in the art with the benefit of the following detailed description of embodiments and upon reference to the accompanying drawings in which:
Figure 1 is a top view of an embodiment of a spinal plating system that may be used for fixation of the human spine.
Figure 2 is a partial cross-sectional view of the spinal plating system taken substantially along line 2-2 of Figure 1. The fastener is not shown in section.
Figure 3 is a partial cross-sectional view of the spinal plating system taken substantially along line 3-3 of Figure 1, wherein the fasteners are in a converging orientation within end holes of a plate. The fasteners are not shown in section.
Figure 4 is a partial cross-sectional view of the spinal plating system taken substantially along line 4-4 of Figure 1, wherein the fasteners are in a diverging orientation within end holes of a plate 5, the fasteners are not shown in section.
Figure 5 depicts an embodiment of a fastener with grooves and holes to engage a locking mechanism.
Figure 6 is a partial front view of a fastener with holes in the fastener head.
Figure 7 is a top view of a fastener head having grooves for engaging a locking mechanism.
Figure 8 is a top view of an embodiment of a fastener head with a hexagonal opening and holes to engage a locking mechanism.
Figure 9 is a perspective view of a locking mechanism.
Figure 10 is a perspective view of a ring that may be used with a fastener and a locking mechanism.
Figure 11 is a partial sectional view of an insertion/extraction tool for fasteners with locking mechanisms.
Figure 12a is a bottom view of a driver head of the insertion/extraction tool shown in Figure 11. The tool may be used with the fastener head shown in Figure 7.
Figure 12b is a bottom view of the driver head of the insertion and removal tool shown in Figure 11 which may be used with the fastener head shown in Figure 8.
Figure 13 is a sectional view of a fastener head with an insertion/extraction tool and compressed locking mechanism during an insertion process.
Figure 14 is a sectional view of a fastener head and locking mechanism inserted into a ring.
Figure 15 is a perspective view of an embodiment of a fastener.
Figure 16 is a front view of an embodiment of a fastener head.
Figure 17 is a perspective view of an embodiment of a fastener.
Figure 18 is a front view of an embodiment of a fastener head with a groove.
Figure 19 is a perspective view of an embodiment of a ring.
Figure 20 is a perspective view of an embodiment of a ring.
Figure 21 is a perspective view of an embodiment of a ring.
Figure 22 is front view of an insertion/extraction tool which may be used with the ring of Figure 21.
Figure 23a is a partial cross sectional view of a fastener during insertion in the ring of Figure 21. The shaft of the insertion/extraction tool is not shown in cross section.
Figure 23b is a partial cross sectional view of a fastener after insertion in the ring of Figure 21. The shaft of the insertion/extraction tool is not shown in cross section; and Figure 23c is a partial cross sectional view of a fastener during removal from the ring of Figure 21. The shaft of the insertion/extraction tool is not shown in cross section.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but to the contrary, the intention is to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention as defmed by the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the drawings, and particularly to Figure 1, a spinal plating system is designated generally as 20. The spinal plating system 20 may be used to correct problems in the lumbar and cervical portions of the spine.
For example, the plating system 20 may be implanted into the occiput bone that is located at the base of the skull.
The plating system 20 may also be installed anterior to the spine. The spinal plating system 20 includes plate 22 that is placed adjacent to a portion of the spine and spans at least two vertebrae. Plate 22 may include four end holes 24, located at corners of the plate. End holes 24 pass vertically through plate 22 such that the holes extend from an upper surface 26 to a lower surface 28 of the plate as depicted in Figure 2. End holes 24 are configured to receive rings 30. Fasteners 32 fit within the rings 30. Herein, "fastener"
means any elongated member, threaded or non-threaded, which is securable within a bone. Fasteners include, but are not limited to screws, nails, rivets, trocars, pins, and barbs. The fastener may be a bone screw. Rings 30 fixedly attach fastener heads 34 of fasteners 32 to plate 22. Gap 36 may exist in each of the rings 30. A gap 36 allows for expansion and contraction of a ring 30. Ring contraction allows a ring 30 to be easily inserted into an end hole 24 of the plate 22.
The spinal plating system 20 may also include one or more central holes 38 that extend vertically through plate 22. One of the central holes 38 may be located at about the mid-point of the plate 22. Head 40 of fastener 42 is positioned within one of the central holes 38. Multiple central holes 38 provide a surgeon with options as to the most desirable location for placement of a fastener 42. Fastener 42 may be used to connect plate 22 to a bone graft (not shown).
Figure 2 shows a fastener 42 within one of the central holes 38 of plate 22.
Fastener 42 may include head 40 and shank 44. The shank 44 extends from the base of head 40. In one embodiment, the inner surface of a central hole 38 tapers so that the hole is larger at upper plate surface 26 than at the lower plate surface 28. The outer surface of the fastener head 40 has a taper that generally corresponds to the taper of the central hole 38.
During implantation of a fastener 42 into a bone graft, the shank 44 of the fastener 42 is inserted into a hole that has been formed in the bone graft under hole 38. Because the lower portion of hole 38 is smaller than the upper portion of the fastener head 40, fastener 42 may become locked into place within the central hole 38 once the fastener has been inserted to a desired depth within the bone graft. The bone plate 22 may have spikes 45 extending from the lower plate surface 28.
As shown in Figure 2, the plate 22 may have a curvature. The curvature may enhance fixation of the plate 22 to a bone. The bone plate 22 may have one or more spikes 45 located on the surface of the plate that faces the bone. The spikes 45 may be disposed in pairs at opposite ends of the plate proximate the end holes 24. The spikes 45 may be tapped into the bone to help inhibit the bone plate 22 from slipping during surgical implantation.
Figure 3 depicts a cross-sectional view of an embodiment of a final plating system 10 wherein a pair of fasteners 32 are in a converging configuration. Figure 4 depicts a cross-sectional view of an embodiment of a spinal plating system wherein a pair of fasteners 32 are in a diverging configuration. Ring 30 fits into a hole 24 between plate 22 and fastener head 34. Inner surfaces 46 of holes 24 may have arcuate or spherical contours.
Outside surfaces 48 of rings 30 may have arcuate or spherical contours that substantially correspond to the contours of the inner surfaces 46 of the holes 24. Having a contoured ring outer surface 48 that substantially corresponds to the contour of the inner hole surface 46 allows a ring 30 positioned in a hole 24 to be capable of polyaxial rotation within the end hole 24.
The combination of ring 30 within end hole 24 functions like a ball and socket since the ring may be swiveled or polyaxially rotated within the end hole. The ability of the ring 30 to rotate polyaxially within the end hole 24 allows a fastener 32 to be positioned through the plate 22 at various angles with respect to an axis that is perpendicular to the plate. Figure 3 and 4 show angle A for particular fastener configurations. The angle A is defined between the longitudinal axis 50 of the fastener 32 and imaginary axis 52 that is perpendicular to the plate 22. The angle A may range from 0 to about 45 degrees, preferably from about 0 to about 30 degrees, and more preferably from 0 to about 0 and 15 degrees.
Fasteners 32 may also be set in positions such that the fasteners are non-planar with respect to a latitudinal plane extending through plate 22. For example, one fastener 32 may be positioned out of the page and another fastener 32 may be positioned into the page, as depicted in Figures 3 and 4.
Fasteners 32 set in diverging or converging directions in the end holes 24 may reduce the possibility of backout. Further, the use of rings 30 to fixedly attach fasteners 32 to plate 22 may inhibit damage to tissue structures by any fasteners that do loosen within a bone, since such fasteners would remain attached to the plate 22. Fasteners 32 may be placed in uni-cortical positions within a bone since the problem of fastener backout is reduced by having obliquely angulated fasteners in converging or diverging configurations.
Ring 30 may at least partially surrounds head 34 of fastener 32 positioned within end hole 24. A shank 54 of fastener 32 may include threading 56 to allow the fastener to be inserted into a bone when fastener 32 is rotated.
As depicted in Figure 1, fastener head 34 may include a cavity 58 that extends from the top of the head to an inner portion of the head. Cavity 58 may be shaped to receive an end of a tool that inserts or removes the fastener 32 from a bone. The tool end may be in the form of a hex wrench, a star wrench or a screwdriver blade.
Inner surface 60 of ring 30 and outer surface 62 of head 34 may have mating tapered surfaces, as depicted in Figure 3 and Figure 4. In one embodiment, the bottom portion of head 34 may be smaller than the upper portion of an unstressed ring 30, while the upper portion of the head may be larger than the upper portion of the ring. As fastener 32 is inserted into a bone, head 34 applies a radial force to ring 30 which causes the ring to expand within the end hole 24. Expanding the ring 30 increases the size of gap 36 and may cause the outside surface 46 of the ring to abut against inner surface 46 of the end hole 24. An interference fit forms between fastener head 34, ring 30, and plate 22 in which these elements fit together such that each element obstructs the movement of the other elements. Hoop stress of ring 30 on head 34 fixedly attaches fastener 32 to plate 22.
Ring 30 may be capable of swiveling within a hole 24 so that one portion of ring 30 is adjacent to the upper surface 26 of bone plate 22 while another portion of the ring lies adjacent to the lower surface 28 of the bone plate. In one embodiment, ring 30 may sufficiently thin to reside within end hole 24 without extending beyond the upper or lower surface 26, 28 of bone plate 22. The ring 30 and fastener head 34 remain within end hole 24 so that the spinal plating system 20 may have a minimal profile width. Having rings 30 and the fastener heads 34 which do not extend above the upper surface 26 or below the lower surface 28 of plate 22 may prevent the rings and heads from contacting adjacent tissue structures. In other embodiments, however, fasteners 32 may be capable of being angulated relative to bone plate 22 such that the rings 30 extend from the end holes 24 beyond upper and/or lower surfaces of the bone plate.
Figure 12b is a bottom view of the driver head of the insertion and removal tool shown in Figure 11 which may be used with the fastener head shown in Figure 8.
Figure 13 is a sectional view of a fastener head with an insertion/extraction tool and compressed locking mechanism during an insertion process.
Figure 14 is a sectional view of a fastener head and locking mechanism inserted into a ring.
Figure 15 is a perspective view of an embodiment of a fastener.
Figure 16 is a front view of an embodiment of a fastener head.
Figure 17 is a perspective view of an embodiment of a fastener.
Figure 18 is a front view of an embodiment of a fastener head with a groove.
Figure 19 is a perspective view of an embodiment of a ring.
Figure 20 is a perspective view of an embodiment of a ring.
Figure 21 is a perspective view of an embodiment of a ring.
Figure 22 is front view of an insertion/extraction tool which may be used with the ring of Figure 21.
Figure 23a is a partial cross sectional view of a fastener during insertion in the ring of Figure 21. The shaft of the insertion/extraction tool is not shown in cross section.
Figure 23b is a partial cross sectional view of a fastener after insertion in the ring of Figure 21. The shaft of the insertion/extraction tool is not shown in cross section; and Figure 23c is a partial cross sectional view of a fastener during removal from the ring of Figure 21. The shaft of the insertion/extraction tool is not shown in cross section.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but to the contrary, the intention is to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention as defmed by the appended claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the drawings, and particularly to Figure 1, a spinal plating system is designated generally as 20. The spinal plating system 20 may be used to correct problems in the lumbar and cervical portions of the spine.
For example, the plating system 20 may be implanted into the occiput bone that is located at the base of the skull.
The plating system 20 may also be installed anterior to the spine. The spinal plating system 20 includes plate 22 that is placed adjacent to a portion of the spine and spans at least two vertebrae. Plate 22 may include four end holes 24, located at corners of the plate. End holes 24 pass vertically through plate 22 such that the holes extend from an upper surface 26 to a lower surface 28 of the plate as depicted in Figure 2. End holes 24 are configured to receive rings 30. Fasteners 32 fit within the rings 30. Herein, "fastener"
means any elongated member, threaded or non-threaded, which is securable within a bone. Fasteners include, but are not limited to screws, nails, rivets, trocars, pins, and barbs. The fastener may be a bone screw. Rings 30 fixedly attach fastener heads 34 of fasteners 32 to plate 22. Gap 36 may exist in each of the rings 30. A gap 36 allows for expansion and contraction of a ring 30. Ring contraction allows a ring 30 to be easily inserted into an end hole 24 of the plate 22.
The spinal plating system 20 may also include one or more central holes 38 that extend vertically through plate 22. One of the central holes 38 may be located at about the mid-point of the plate 22. Head 40 of fastener 42 is positioned within one of the central holes 38. Multiple central holes 38 provide a surgeon with options as to the most desirable location for placement of a fastener 42. Fastener 42 may be used to connect plate 22 to a bone graft (not shown).
Figure 2 shows a fastener 42 within one of the central holes 38 of plate 22.
Fastener 42 may include head 40 and shank 44. The shank 44 extends from the base of head 40. In one embodiment, the inner surface of a central hole 38 tapers so that the hole is larger at upper plate surface 26 than at the lower plate surface 28. The outer surface of the fastener head 40 has a taper that generally corresponds to the taper of the central hole 38.
During implantation of a fastener 42 into a bone graft, the shank 44 of the fastener 42 is inserted into a hole that has been formed in the bone graft under hole 38. Because the lower portion of hole 38 is smaller than the upper portion of the fastener head 40, fastener 42 may become locked into place within the central hole 38 once the fastener has been inserted to a desired depth within the bone graft. The bone plate 22 may have spikes 45 extending from the lower plate surface 28.
As shown in Figure 2, the plate 22 may have a curvature. The curvature may enhance fixation of the plate 22 to a bone. The bone plate 22 may have one or more spikes 45 located on the surface of the plate that faces the bone. The spikes 45 may be disposed in pairs at opposite ends of the plate proximate the end holes 24. The spikes 45 may be tapped into the bone to help inhibit the bone plate 22 from slipping during surgical implantation.
Figure 3 depicts a cross-sectional view of an embodiment of a final plating system 10 wherein a pair of fasteners 32 are in a converging configuration. Figure 4 depicts a cross-sectional view of an embodiment of a spinal plating system wherein a pair of fasteners 32 are in a diverging configuration. Ring 30 fits into a hole 24 between plate 22 and fastener head 34. Inner surfaces 46 of holes 24 may have arcuate or spherical contours.
Outside surfaces 48 of rings 30 may have arcuate or spherical contours that substantially correspond to the contours of the inner surfaces 46 of the holes 24. Having a contoured ring outer surface 48 that substantially corresponds to the contour of the inner hole surface 46 allows a ring 30 positioned in a hole 24 to be capable of polyaxial rotation within the end hole 24.
The combination of ring 30 within end hole 24 functions like a ball and socket since the ring may be swiveled or polyaxially rotated within the end hole. The ability of the ring 30 to rotate polyaxially within the end hole 24 allows a fastener 32 to be positioned through the plate 22 at various angles with respect to an axis that is perpendicular to the plate. Figure 3 and 4 show angle A for particular fastener configurations. The angle A is defined between the longitudinal axis 50 of the fastener 32 and imaginary axis 52 that is perpendicular to the plate 22. The angle A may range from 0 to about 45 degrees, preferably from about 0 to about 30 degrees, and more preferably from 0 to about 0 and 15 degrees.
Fasteners 32 may also be set in positions such that the fasteners are non-planar with respect to a latitudinal plane extending through plate 22. For example, one fastener 32 may be positioned out of the page and another fastener 32 may be positioned into the page, as depicted in Figures 3 and 4.
Fasteners 32 set in diverging or converging directions in the end holes 24 may reduce the possibility of backout. Further, the use of rings 30 to fixedly attach fasteners 32 to plate 22 may inhibit damage to tissue structures by any fasteners that do loosen within a bone, since such fasteners would remain attached to the plate 22. Fasteners 32 may be placed in uni-cortical positions within a bone since the problem of fastener backout is reduced by having obliquely angulated fasteners in converging or diverging configurations.
Ring 30 may at least partially surrounds head 34 of fastener 32 positioned within end hole 24. A shank 54 of fastener 32 may include threading 56 to allow the fastener to be inserted into a bone when fastener 32 is rotated.
As depicted in Figure 1, fastener head 34 may include a cavity 58 that extends from the top of the head to an inner portion of the head. Cavity 58 may be shaped to receive an end of a tool that inserts or removes the fastener 32 from a bone. The tool end may be in the form of a hex wrench, a star wrench or a screwdriver blade.
Inner surface 60 of ring 30 and outer surface 62 of head 34 may have mating tapered surfaces, as depicted in Figure 3 and Figure 4. In one embodiment, the bottom portion of head 34 may be smaller than the upper portion of an unstressed ring 30, while the upper portion of the head may be larger than the upper portion of the ring. As fastener 32 is inserted into a bone, head 34 applies a radial force to ring 30 which causes the ring to expand within the end hole 24. Expanding the ring 30 increases the size of gap 36 and may cause the outside surface 46 of the ring to abut against inner surface 46 of the end hole 24. An interference fit forms between fastener head 34, ring 30, and plate 22 in which these elements fit together such that each element obstructs the movement of the other elements. Hoop stress of ring 30 on head 34 fixedly attaches fastener 32 to plate 22.
Ring 30 may be capable of swiveling within a hole 24 so that one portion of ring 30 is adjacent to the upper surface 26 of bone plate 22 while another portion of the ring lies adjacent to the lower surface 28 of the bone plate. In one embodiment, ring 30 may sufficiently thin to reside within end hole 24 without extending beyond the upper or lower surface 26, 28 of bone plate 22. The ring 30 and fastener head 34 remain within end hole 24 so that the spinal plating system 20 may have a minimal profile width. Having rings 30 and the fastener heads 34 which do not extend above the upper surface 26 or below the lower surface 28 of plate 22 may prevent the rings and heads from contacting adjacent tissue structures. In other embodiments, however, fasteners 32 may be capable of being angulated relative to bone plate 22 such that the rings 30 extend from the end holes 24 beyond upper and/or lower surfaces of the bone plate.
In one embodiment, the spinal plating system 20 is prepared for surgical implantation by positioning rings 30 within end holes 24. During the survical procedure. holes may be drilled and tapped into the bones to which plate 22 is to be attached. Plate 22 may then positioned adjacent to the bones and over the holes in the bone.
Fasteners 32 may be placed through a ring 30 and into the bone holes. Each fastener 32 may be obliquely angulated into the plate 22. The fasteners 32 mav be inserted into the bone until the fastener heads 34 expand the rings 30 against the inner surfaces 46 of the holes 24; thus fixing the fasteners to the rings, and the rings to the plate 22. If necessary, a fastener 42 may be positioned in one of the central holes 38.
In one embodiment, ring 30 has an outer width that is less than or about equal to the width of an end hole 24 in bone plate 22 at a location between an upper surface 26 and lower surface 28 of the bone plate. The width of each end hole 24 proximate the upper and lower surfaces 26, 28 of bone plate 22 is less than or about equal to an outer width of ring 30. The width of the ring may inhibit a ring positioned in a hole from falling out of the hole.
Prior to surgerv, a ring 30 mav be positioned within each end hole 24 of bone plate 22. When seated within hole 24, ring 30 may be capable of swiveling within the hole, but the ring is inhibited from falling out of the hole because of reduced width of the hole proximate the upper and lower surfaces 26, 28 of the plate 22. A surgeon may use a bone plate 22 having rings 30 positioned within holes 24 prior to surgery. Alternatively, rings 30 may be manually positioned within holes 24 during suroery.
Texturing the outer surface 48 of a rin2 30 or an inner surface 46 of a hole 24 may further inhibit movement of a fastener 332 with respect to a bone plate 22. Both surfaces may be textured to more effectively inhibit movement of a fastener 32 with respect to a bone plate 22. During manufacturine procedures, the outer surface 48 of ring 30 and the inner surface of end hole 24 are formed as relatively smooth surfaces. While the friction benveen these smooth surfaces tends to be sufficient to maintain fastener 32 in a fixed position with respect to plate 22; under stressful conditions ring 30 mav rotate within hole 24. By providing at least one textured surface, the coefficient of friction between hole 24 and ring 30 is increased. The increase in friction between hole 24 and ring 30 may help to inhibit fastener movement relative to plate 22.
Several types of textured surfaces may be used to increase the coefficient of friction between ring 30 and hole 24. In general, any process that transforms a relatively smooth surface into a textured surface having an increased coefficient of friction may be used. Methods for forming a textured surface include, but are not limited to: sanding, forming grooves within a surface, shot peening processes, electric discharge processes, and embedding of hard particles within a surface.
A shot peening process for forming a textured surface is described in U.S.
Patent No. 5,526.664 to Vetter .
In general, a shot peening process irrvolves propelling a stream of hardened balls, tvpicallv made of steel, at a relativelv high velocitv at a surface. To create a panern upon an area of the surface ttle stream is typically moved about the surface. The speed by which the stream is moved about the surface determines the type of textured surface formed.
Fasteners 32 may be placed through a ring 30 and into the bone holes. Each fastener 32 may be obliquely angulated into the plate 22. The fasteners 32 mav be inserted into the bone until the fastener heads 34 expand the rings 30 against the inner surfaces 46 of the holes 24; thus fixing the fasteners to the rings, and the rings to the plate 22. If necessary, a fastener 42 may be positioned in one of the central holes 38.
In one embodiment, ring 30 has an outer width that is less than or about equal to the width of an end hole 24 in bone plate 22 at a location between an upper surface 26 and lower surface 28 of the bone plate. The width of each end hole 24 proximate the upper and lower surfaces 26, 28 of bone plate 22 is less than or about equal to an outer width of ring 30. The width of the ring may inhibit a ring positioned in a hole from falling out of the hole.
Prior to surgerv, a ring 30 mav be positioned within each end hole 24 of bone plate 22. When seated within hole 24, ring 30 may be capable of swiveling within the hole, but the ring is inhibited from falling out of the hole because of reduced width of the hole proximate the upper and lower surfaces 26, 28 of the plate 22. A surgeon may use a bone plate 22 having rings 30 positioned within holes 24 prior to surgery. Alternatively, rings 30 may be manually positioned within holes 24 during suroery.
Texturing the outer surface 48 of a rin2 30 or an inner surface 46 of a hole 24 may further inhibit movement of a fastener 332 with respect to a bone plate 22. Both surfaces may be textured to more effectively inhibit movement of a fastener 32 with respect to a bone plate 22. During manufacturine procedures, the outer surface 48 of ring 30 and the inner surface of end hole 24 are formed as relatively smooth surfaces. While the friction benveen these smooth surfaces tends to be sufficient to maintain fastener 32 in a fixed position with respect to plate 22; under stressful conditions ring 30 mav rotate within hole 24. By providing at least one textured surface, the coefficient of friction between hole 24 and ring 30 is increased. The increase in friction between hole 24 and ring 30 may help to inhibit fastener movement relative to plate 22.
Several types of textured surfaces may be used to increase the coefficient of friction between ring 30 and hole 24. In general, any process that transforms a relatively smooth surface into a textured surface having an increased coefficient of friction may be used. Methods for forming a textured surface include, but are not limited to: sanding, forming grooves within a surface, shot peening processes, electric discharge processes, and embedding of hard particles within a surface.
A shot peening process for forming a textured surface is described in U.S.
Patent No. 5,526.664 to Vetter .
In general, a shot peening process irrvolves propelling a stream of hardened balls, tvpicallv made of steel, at a relativelv high velocitv at a surface. To create a panern upon an area of the surface ttle stream is typically moved about the surface. The speed by which the stream is moved about the surface determines the type of textured surface formed.
Aii electrical discharge process is based on the principle of removal of portions of a metal surface by spark discharges. Typically a spark is generated between the surface to be treated and an electrode by creating potential differential between the tool and the electrode. The spark produced tends to remove a portion of the surface disposed between the electrode and the surface. Typically, the electrode is relatively small such that only small portions of the surface are removed_ By moving the electrode about the surface numerous cavities may be formed within the surface. Typically these cavities are somewhat pyramidal in shape.
Various patterns may be formed within the surface depending on how the electrode is positioned during the discharge. Electric discharge machines are well known in the art. A method for forming a frictional surface within a metal surface using an electric discharge process is described in U.S. Patent No. 4,964,641 to Miesch et al Embedding hardened particles in a surface produces a textured surface. A
method for embedding hardened particles in a metal surface is described in U.S. Patent No.
4,768,787 to Shira .
The method of Shira involves using a laser or other high-energy source to heat the surface such that the surface melts in selected areas. Just before the molten area re-solidifies, a stream of abrasive particles is directed to the area. In this manner some of the particles tend to become embedded within the molten surface. The particles typically have a number of sharp edges that protrude from the surface after the particles have been embedded within the surface.
Any of the above methods of texturing may be used in combination with another method. For example, the inner surface 46 of hole 24 may be textured using a pattern of grooves.
The outer surface 48 of ring 30, however, mav be textured usin, an electrical discharge method. W1ien coupled together the textured surfaces of hole 24 and rinQ 30 may interact with each other to provide additional resistance to movement of the ring within the hole.
Figure 5 illustrates an embodiment of fastener 100. The fastener 100 may include fastener head 102, opening 104, optional grooves 106, holes 108, shank 110 and threads 112.
Opening 104 accepts a drive tool, such as drive tool 114, which is described below. The opening 104, grooves 106 and holes 108 accept locking mechanism 116, as described below, Holes 108 extend from the outer surface 118 of head 102 to the opening 104.
In one embodiment, the outer surface 118 is substantially cylindrical. In another embodiment, the head 102 tapers from a widest portion near the upper surface of the head to a narrowest portion near the shank 110.
Figure 6 is a side view of the head 102 of an embodiment of fastener 100 showin holes 108 and optional rim 120. Rim 120 may serve to limit the insertion of fastener 100 into a ring 30 during use.
Figure 7 is a top view of the head 102 of a fastener 100 with optional grooves 106. Fi~ure 3 shows an alternate embodiment of fastener 100 having a hexagonal shape opening 104 and no grnoves.
Figure 9 illustrates a locking mechanism 116 used with fastener 100. Lockinc, mechanism 116 includes top 122 with shafts 124 extending downwards and outwards from the top. Prongs 126 are located at ends of shafts 124. Prongs 126 may be substantially parallel to each other and also may be substantially parallel to the locking mechanism top 122. The shafts 124 have a spring-like action which allows the shafts 124 to be compressed. The spring-like action also allows the shafts to return to an original configuration when not compressed.
Figure 10 illustrates an embodiment of a ring 130 that may be used in combination with fastener 100 and locking mechanism 116. Ring 130 includes groove 132. Groove 132 engages prongs 126 on locking mechanism 116 to secure fastener 100 in ring 130 after insertion. Gap 36 in ring 130 allows the ring to contract during insertion of the ring 130 into an end hole 24 of the bone plate 22. Gap 36 also allows ring 130 to be expanded by the head 102 of fastener 100 in the ring 130 to abut the ring against the inner surface 46 of the end hole 24.
Abutting the ring 130 against the inner surface 46 of the end hole 24 may fix the position of fastener 32 relative to the bone plate 22.
Figure 11 illustrates tool 114. The tool 114 may be used during the insertion and extraction of a fastener 100 and locking mechanism 116. The insertion/extraction tool 114 includes a shaft 172. One end of shaft 172 may include a handle 174 for turning the tool during insertion and removal of a fastener 100. Figure 11 shows a modified T-handle 174 coupled to the shaft 172, but any type of handle that allows torque to be applied to the fastener during insertion and removal may be used. At an opposite end of shaft 172 from handle 174 is driver head 176. The outer surface of driver head 176 may be shaped to complement the shape of opening 104 in the head of the fastener 100. Driver head 176 may be inserted into the opening 104 of the fastener 100. The fastener may be inserted in an end hole 24 of a bone plate 22 and into a bone by rotating insertion/extraction tool 114. Driver head 176 includes cavity 178. The inner surface of the cavity may slide over and compress the shafts 124 and prongs 126 of a locking mechanism 116.
Figure 12a shows a bottom view of an embodiment of a driver head 176 of an insertion/extraction tool 114. The driver head of Figure 12a may be used with the type of fastener head 102 shown in Figure 7. The driver head 176 has cavity 178 which allows the driver head to slide over and compress a locking mechanism 116. The driver head 176 includes ridges 180 for engaging complementary grooves 106 in the opening 104 of a fastener head 102. Figure 12b shows an alternate embodiment of a driver head 176 of an insertion/extraction tool 114. The driver head of Figure 12b may be used with the type of fastener head 102 shown in Figure 8. The driver head 176 has cavity 178 which allows the driver head to slide over and compresses a locking mechanism 116. The driver head 176 may be hexagonal shaped to mate with opening 104 of a fastener head 102.
Figure 13 shows a cross sectional view of an embodiment of a fastener 100, locking mechanism 116, and insertion/extraction tool 114 during the insertion process. Driver head 176 inserts into opening 104 of fastener head 102. Shafts 124 of locking mechanism 116 are compressed within cavity 178 of driver head 176. The compression of shafts 124 causes prongs 126 to retract in holes 108, which allow fastener head 102 to be inserted into a ring 130 without interference by extended prongs 126. When insertion/extraction tool 114 is removed, the shafts 124 uncompress, which causes the prongs 126 to extend out of holes 108.
Figure 14 shows a cross sectional view of an embodiment of a fastener 100, locking mechanism 116, and ring 130 after the fastener has been fully inserted in the ring and the insertion/extraction tool 114 has been removed. Shafts 124 of locking mechanism 116 are uncompressed, allowing prongs 126 to extend out of holes 108 in fastener head 102. Prongs 126 extend into groove 132 on the ring 130.
To remove a threaded fastener 100 from ring 130, insertion/extraction tool 114 is inserted in the opening 104 in fastener head 102 to compress the shafts 124 of the locking mechanism 116. Compressing the shafts 124 causes the prongs 126 to retract through holes 108 and removes the connection between the prongs and the ring 130. The tool 114 may then be rotated to remove the fastener 100 from the bone.
After insertion of a fastener 100 and locking mechanism 116 into a bone, if the fastener 100 becomes loose within the bone, fastener backout from the bone plate may be resisted by the locking mechanism-groove connection between locking mechanism 116 and the ring 130. Thus, even if fastener shank 110 loosens within the bone, the fastener head 102 will tend to remain within ring 130 in the hole 24 of the plate 22. There may be some freedom of movement in the connection between the prongs 126 and the groove 130 to allow a fastener 100 to back out slightly from a bone after insertion.
During the surgical procedure for attaching a bone plate to bones using the devices depicted in Figures 5-14, holes may be drilled and tapped into the bones to which the bone plate 22 is to be attached. The bone plate 22 may be positioned adjacent to the bones. Rings 130 may be positioned within each end hole 24 before or during the surgical procedure. A fastener 100, with a pre-inserted locking mechanism, may be positioned through a ring 130. An insertion/extraction tool 114 may be inserted in the opening 104 of threaded fastener 100 to compress the locking mechanism 116 within the cavity of the driver head of the tool.
Compressing the locking mechanism 116 retracts the prongs 126 of the locking mechanism within the fastener opening 104. The fastener 100 may then be rotated to insert the fastener 100 into a bone. As the fastener 100 is rotated, fastener head 102 moves into the ring 130. Movement of head 102 into ring 130 causes the ring to expand against the end hole 24 to fix the fastener 100 relative to the plate 22. Once the fastener 100 is fully inserted, insertion/extraction tool 114 is removed. Removing the tool 114 causes the locking mechanism 116 to uncompress so that the prongs 126 extend through the holes 108 in the fastener head 102 and engage ring the groove 132 in the ring 130.
Fasteners 100 may be inserted through the remaining end holes 24 and into bone to securely attach the plate 22 to the bones.
Figure 15 illustrates an embodiment of a fastener 200 with fastener head 202 having groove 204. When a fastener 200 is inserted through a ring 230 positioned in a plate 22, the groove 204 may engage fingers 232 on ring 230 (the ring shown in Figures 19 and 20) to secure the fastener 200 within the ring 230. Fastener 200 may include the head 202 and shank 206 with threading 208. Head 202 may include opening 210 configured to accept a driving tool.
The engagement of a fmger 232 of a ring 230 on groove 204 may inhibit fastener 200 from backing out of the ring after insertion of the fastener into the plate 22. In an embodiment, the outer surface of head 202 is substantially cylindrical. In another embodiment, as shown in Figure 16, the head 202 may taper. The widest portion of the head 202 may be near the top surface of the head, and the narrowest portion may be near the shank 206.
Figure 17 illustrates an embodiment of a fastener 200 which has radial slots 212 extending from the outer surface of the head into the opening 210. The radial slots 212 may allow a portion of head 202 to contract during insertion. The radial slots 212 may also be used to engage a portion of a drive head of an insertion/extraction tool (not shown).
Figures 15, 16, and 17 illustrate fastener heads 202 wherein the grooves 204 are rims along top edges of the heads. Figure 18 illustrates an embodiment of a fastener 200 wherein the groove 204 is located at a position along the side of the fastener head 202. The groove 204 may be located at any position along the side of the fastener head 202. When the fastener head 202 is driven through a ring 230, the interaction of the fastener head, the ring, and the end hole 24 allows fmgers 232 of the ring to snap into the groove 214. The fmgers 232 may secure the fastener head 202 to the ring 230.
Figures 19 and 20 show perspective views of embodiments of ring 230 that may be used with fasteners having a groove. Ring 230 may include bottom 234, top 238, an outer surface 48, an inner surface 60, gap 36, and slots 240 and notches 242. The slots 240 and notches 240 may form the fmgers 232. Gap 36 may allow ring 230 to contract. Contraction of the ring 230 may facilitate the insertion of the ring into an end hole 24 in a bone plate 22.
Gap 36 may also allow the ring 230 to expand against the end hole 24 when a fastener head 202 passes into the ring. Expansion of the ring against the hole 24 fixes the fastener 200 relative to the bone plate 22.
In some embodiments, outer surface 48 of the ring 230 may be textured to increase the coefficient of friction between ring 230 and the hole 24. In some embodiments, inner surface 60 of the ring 230 may be tapered to match a tapered head of a fastener 200. Having tapered surfaces may facilitate the expansion of ring in an end hole 24 during insertion of the fastener into the bone plate system 20.
The shape of the end hole 24 may push the fmgers 232 inwards past the edge of the groove 204 of a fastener 200 when the groove is inserted into a ring 230 so that the groove passes an upper edge of the ring slots 240. The inward positioned fingers 232 may inhibit fastener 200 from backing out of the ring 230 and the hole 24.
When the fastener 200 is inserted into the ring 230, the fastener head 202 may expand the outside surface 48 of the ring against the inner surface 46 of the end hole 24 to fix the fastener 200 to the ring 230, and the ring to the plate 22.
Figure 21 is a perspective view of an embodiment of a ring that may be used with fasteners 200 that have rims 204, such as the fasteners shown in Figure 15-17. Ring 430 may include bottom 432, top 434, outer surface 48, inner surface 60, gap 36, notches 436, and ridges 438. Notches 436 divide the ring 430 into segments or paddles 440. Notches 436 and gap 36 may allow ring 430 to contract, facilitating the insertion of the ring into a hole 24 of a bone plate 22. Notches 436 and gap 36 may also allow ring 430 to expand when a fastener head 202 passes into the ring to fix the position of the fastener relative to the bone plate 22. Notches 436 may also allow paddles 436 to bend outwards during insertion of a fastener 200. The outer surface 48 and/or the inner surface 60 may be textured. The inner surface of the ring 430 may be tapered to correspond to the taper of a fastener head 202.
Figure 22 illustrates an embodiment of an insertion tool/extraction tool 450 for use with a fastener 200 and ring 430. Insertion/extraction too1450 may include shaft 452, handle 454, driver head 456, and extraction member 458. At one end of shaft 452 is handle 454 for tuming the tool during insertion and removal of a fastener 200. The illustration shows a T-handle, but any other type of handle that allows sufficient torque to be applied to the fastener 200 to allow for insertion or removal of the fastener may be used. At the opposite end of shaft 452 from handle 454 is driver head 456. The outer surface of driver head 456 may be shaped complementary to the shape of the opening 210 in the head 202 of the fastener 200.
The extraction member 458 shown in Figure 22 may include grip 459, passage 460, (shown in Figure 23c), tip 462, and extraction head 464. The passage 460 extends through the grip 459 and the extraction head 464.
During the insertion process, extraction member 458 may be removed from shaft 452. To extract a fastener from a ring 430, extraction member 458 may be slid back on to shaft 452. Driver head 456 is inserted into the opening 210 of the fastener 200. Extraction member 458 slides down shaft 452 until tip 462 of extraction head 464 contacts the top of the ring 430. Downwards pressure on the extraction member 458 forces paddles 440 of the ring 430 outwards, and disengages the ridge 438 on the paddles 440 from the rim 204 on the fastener head 202. The fastener 200 may then be backed out of the plate 22 by rotating the shaft 452 with the handle 454. Preferably, rotating shaft 452 does not rotate the extraction member 458.
Figure 23a, 23b, and 23c show partial cross sectional views of a threaded fastener 200, ring 430, and insertion/extraction too1450 during the insertion and extraction processes.
Referring to Figure 23a, driver head 456 of insertion/extraction too1450 is inserted in opening 210 of fastener head 202. Ring 430 is positioned inside a hole 24 in a bone plate and the bone plate is positioned on a bone (bone and bone plate not shown). Fastener 200 is screwed into the bone until the outer surface of fastener head 202 contacts the surfaces of the paddles 440. The tapering of the outer surface of fastener head 202 provides a ramping force on the surfaces of the paddles 440, to bend the paddles outwards as fastener 200 is screwed farther into the bone.
In Figure 23b, fastener 200 has been screwed in to the desired depth. Fastener head 202 penetrates ring 430 far enough to allow ridges 438 to snap onto rim 204 on fastener head 202.
Driver head 456 of insertion/extraction too1450 is shown still inserted in opening 210 prior to removal from the opening. After insertion, if the fastener 200 becomes loose within the bone, fastener backout from the bone plate may be resisted by the ridge-rim connection between fastener head 202 and ring 430. Thus, even if the fastener shank loosens within the bone, the fastener head 202 will tend to remain within ring 430 in the hole 24 of the plate 22 so as not to protrude from the plate into surrounding body tissue. In some embodiments, there may be some freedom of movement in the connection between the ridges 438 on the paddles 440 and the rim 204 to allow a fastener 200 to back out slightly from a bone after insertion. Typically, the freedom of movement is limited so that the fastener head 202 may not protrude from the plate 22.
Figure 23c shows insertion/extraction too1250 being used to remove a fastener 200. Driver head 256 is inserted in opening 210 of fastener 200. Extraction head 464 is slid down shaft 452 of insertion/extraction too1450 until the sloped surface of tip 462 applies a wedging force against the sloped upper surfaces of paddles 440. The wedging force bends the paddles 440 outwards to disengage the ridges 438 from the rim 204. Fastener 200 may then be backed out of the bone, the ring 430 and the plate 22.
The plate, fasteners, and locking mechanisms may be made of steel (e.g, stainless steel), titanium, steel alloys or titanium alloys. These materials are generally nontoxic, bio-compatible, strong, and non-corrosive. Other materials that have these properties may also be used. The plate and the rings may be made of a number of bio-compatible materials including metals, plastics, and composites.
Any of the embodiments described above may be used individually or in combination with other embodiments described above. Further modifications and alternative embodiments of various aspects of the invention will be apparent to those skilled in the art in view of this description. Accordingly, this description is to be construed as illustrative only and is for the purpose of teaching those skilled in the art the general manner of carrying out the invention. It is to be understood that the forms of the invention shown and described herein are to be taken as examples of embodiments. Elements and materials may be substituted for those illustrated and described herein, parts and processes may be reversed, and certain features of the invention may be utilized independently, all as would be apparent to one skilled in the art after having the benefit of this description of the invention. Changes may be made in the elements described herein without departing from the spirit and scope of the invention as described in the following claims.
Various patterns may be formed within the surface depending on how the electrode is positioned during the discharge. Electric discharge machines are well known in the art. A method for forming a frictional surface within a metal surface using an electric discharge process is described in U.S. Patent No. 4,964,641 to Miesch et al Embedding hardened particles in a surface produces a textured surface. A
method for embedding hardened particles in a metal surface is described in U.S. Patent No.
4,768,787 to Shira .
The method of Shira involves using a laser or other high-energy source to heat the surface such that the surface melts in selected areas. Just before the molten area re-solidifies, a stream of abrasive particles is directed to the area. In this manner some of the particles tend to become embedded within the molten surface. The particles typically have a number of sharp edges that protrude from the surface after the particles have been embedded within the surface.
Any of the above methods of texturing may be used in combination with another method. For example, the inner surface 46 of hole 24 may be textured using a pattern of grooves.
The outer surface 48 of ring 30, however, mav be textured usin, an electrical discharge method. W1ien coupled together the textured surfaces of hole 24 and rinQ 30 may interact with each other to provide additional resistance to movement of the ring within the hole.
Figure 5 illustrates an embodiment of fastener 100. The fastener 100 may include fastener head 102, opening 104, optional grooves 106, holes 108, shank 110 and threads 112.
Opening 104 accepts a drive tool, such as drive tool 114, which is described below. The opening 104, grooves 106 and holes 108 accept locking mechanism 116, as described below, Holes 108 extend from the outer surface 118 of head 102 to the opening 104.
In one embodiment, the outer surface 118 is substantially cylindrical. In another embodiment, the head 102 tapers from a widest portion near the upper surface of the head to a narrowest portion near the shank 110.
Figure 6 is a side view of the head 102 of an embodiment of fastener 100 showin holes 108 and optional rim 120. Rim 120 may serve to limit the insertion of fastener 100 into a ring 30 during use.
Figure 7 is a top view of the head 102 of a fastener 100 with optional grooves 106. Fi~ure 3 shows an alternate embodiment of fastener 100 having a hexagonal shape opening 104 and no grnoves.
Figure 9 illustrates a locking mechanism 116 used with fastener 100. Lockinc, mechanism 116 includes top 122 with shafts 124 extending downwards and outwards from the top. Prongs 126 are located at ends of shafts 124. Prongs 126 may be substantially parallel to each other and also may be substantially parallel to the locking mechanism top 122. The shafts 124 have a spring-like action which allows the shafts 124 to be compressed. The spring-like action also allows the shafts to return to an original configuration when not compressed.
Figure 10 illustrates an embodiment of a ring 130 that may be used in combination with fastener 100 and locking mechanism 116. Ring 130 includes groove 132. Groove 132 engages prongs 126 on locking mechanism 116 to secure fastener 100 in ring 130 after insertion. Gap 36 in ring 130 allows the ring to contract during insertion of the ring 130 into an end hole 24 of the bone plate 22. Gap 36 also allows ring 130 to be expanded by the head 102 of fastener 100 in the ring 130 to abut the ring against the inner surface 46 of the end hole 24.
Abutting the ring 130 against the inner surface 46 of the end hole 24 may fix the position of fastener 32 relative to the bone plate 22.
Figure 11 illustrates tool 114. The tool 114 may be used during the insertion and extraction of a fastener 100 and locking mechanism 116. The insertion/extraction tool 114 includes a shaft 172. One end of shaft 172 may include a handle 174 for turning the tool during insertion and removal of a fastener 100. Figure 11 shows a modified T-handle 174 coupled to the shaft 172, but any type of handle that allows torque to be applied to the fastener during insertion and removal may be used. At an opposite end of shaft 172 from handle 174 is driver head 176. The outer surface of driver head 176 may be shaped to complement the shape of opening 104 in the head of the fastener 100. Driver head 176 may be inserted into the opening 104 of the fastener 100. The fastener may be inserted in an end hole 24 of a bone plate 22 and into a bone by rotating insertion/extraction tool 114. Driver head 176 includes cavity 178. The inner surface of the cavity may slide over and compress the shafts 124 and prongs 126 of a locking mechanism 116.
Figure 12a shows a bottom view of an embodiment of a driver head 176 of an insertion/extraction tool 114. The driver head of Figure 12a may be used with the type of fastener head 102 shown in Figure 7. The driver head 176 has cavity 178 which allows the driver head to slide over and compress a locking mechanism 116. The driver head 176 includes ridges 180 for engaging complementary grooves 106 in the opening 104 of a fastener head 102. Figure 12b shows an alternate embodiment of a driver head 176 of an insertion/extraction tool 114. The driver head of Figure 12b may be used with the type of fastener head 102 shown in Figure 8. The driver head 176 has cavity 178 which allows the driver head to slide over and compresses a locking mechanism 116. The driver head 176 may be hexagonal shaped to mate with opening 104 of a fastener head 102.
Figure 13 shows a cross sectional view of an embodiment of a fastener 100, locking mechanism 116, and insertion/extraction tool 114 during the insertion process. Driver head 176 inserts into opening 104 of fastener head 102. Shafts 124 of locking mechanism 116 are compressed within cavity 178 of driver head 176. The compression of shafts 124 causes prongs 126 to retract in holes 108, which allow fastener head 102 to be inserted into a ring 130 without interference by extended prongs 126. When insertion/extraction tool 114 is removed, the shafts 124 uncompress, which causes the prongs 126 to extend out of holes 108.
Figure 14 shows a cross sectional view of an embodiment of a fastener 100, locking mechanism 116, and ring 130 after the fastener has been fully inserted in the ring and the insertion/extraction tool 114 has been removed. Shafts 124 of locking mechanism 116 are uncompressed, allowing prongs 126 to extend out of holes 108 in fastener head 102. Prongs 126 extend into groove 132 on the ring 130.
To remove a threaded fastener 100 from ring 130, insertion/extraction tool 114 is inserted in the opening 104 in fastener head 102 to compress the shafts 124 of the locking mechanism 116. Compressing the shafts 124 causes the prongs 126 to retract through holes 108 and removes the connection between the prongs and the ring 130. The tool 114 may then be rotated to remove the fastener 100 from the bone.
After insertion of a fastener 100 and locking mechanism 116 into a bone, if the fastener 100 becomes loose within the bone, fastener backout from the bone plate may be resisted by the locking mechanism-groove connection between locking mechanism 116 and the ring 130. Thus, even if fastener shank 110 loosens within the bone, the fastener head 102 will tend to remain within ring 130 in the hole 24 of the plate 22. There may be some freedom of movement in the connection between the prongs 126 and the groove 130 to allow a fastener 100 to back out slightly from a bone after insertion.
During the surgical procedure for attaching a bone plate to bones using the devices depicted in Figures 5-14, holes may be drilled and tapped into the bones to which the bone plate 22 is to be attached. The bone plate 22 may be positioned adjacent to the bones. Rings 130 may be positioned within each end hole 24 before or during the surgical procedure. A fastener 100, with a pre-inserted locking mechanism, may be positioned through a ring 130. An insertion/extraction tool 114 may be inserted in the opening 104 of threaded fastener 100 to compress the locking mechanism 116 within the cavity of the driver head of the tool.
Compressing the locking mechanism 116 retracts the prongs 126 of the locking mechanism within the fastener opening 104. The fastener 100 may then be rotated to insert the fastener 100 into a bone. As the fastener 100 is rotated, fastener head 102 moves into the ring 130. Movement of head 102 into ring 130 causes the ring to expand against the end hole 24 to fix the fastener 100 relative to the plate 22. Once the fastener 100 is fully inserted, insertion/extraction tool 114 is removed. Removing the tool 114 causes the locking mechanism 116 to uncompress so that the prongs 126 extend through the holes 108 in the fastener head 102 and engage ring the groove 132 in the ring 130.
Fasteners 100 may be inserted through the remaining end holes 24 and into bone to securely attach the plate 22 to the bones.
Figure 15 illustrates an embodiment of a fastener 200 with fastener head 202 having groove 204. When a fastener 200 is inserted through a ring 230 positioned in a plate 22, the groove 204 may engage fingers 232 on ring 230 (the ring shown in Figures 19 and 20) to secure the fastener 200 within the ring 230. Fastener 200 may include the head 202 and shank 206 with threading 208. Head 202 may include opening 210 configured to accept a driving tool.
The engagement of a fmger 232 of a ring 230 on groove 204 may inhibit fastener 200 from backing out of the ring after insertion of the fastener into the plate 22. In an embodiment, the outer surface of head 202 is substantially cylindrical. In another embodiment, as shown in Figure 16, the head 202 may taper. The widest portion of the head 202 may be near the top surface of the head, and the narrowest portion may be near the shank 206.
Figure 17 illustrates an embodiment of a fastener 200 which has radial slots 212 extending from the outer surface of the head into the opening 210. The radial slots 212 may allow a portion of head 202 to contract during insertion. The radial slots 212 may also be used to engage a portion of a drive head of an insertion/extraction tool (not shown).
Figures 15, 16, and 17 illustrate fastener heads 202 wherein the grooves 204 are rims along top edges of the heads. Figure 18 illustrates an embodiment of a fastener 200 wherein the groove 204 is located at a position along the side of the fastener head 202. The groove 204 may be located at any position along the side of the fastener head 202. When the fastener head 202 is driven through a ring 230, the interaction of the fastener head, the ring, and the end hole 24 allows fmgers 232 of the ring to snap into the groove 214. The fmgers 232 may secure the fastener head 202 to the ring 230.
Figures 19 and 20 show perspective views of embodiments of ring 230 that may be used with fasteners having a groove. Ring 230 may include bottom 234, top 238, an outer surface 48, an inner surface 60, gap 36, and slots 240 and notches 242. The slots 240 and notches 240 may form the fmgers 232. Gap 36 may allow ring 230 to contract. Contraction of the ring 230 may facilitate the insertion of the ring into an end hole 24 in a bone plate 22.
Gap 36 may also allow the ring 230 to expand against the end hole 24 when a fastener head 202 passes into the ring. Expansion of the ring against the hole 24 fixes the fastener 200 relative to the bone plate 22.
In some embodiments, outer surface 48 of the ring 230 may be textured to increase the coefficient of friction between ring 230 and the hole 24. In some embodiments, inner surface 60 of the ring 230 may be tapered to match a tapered head of a fastener 200. Having tapered surfaces may facilitate the expansion of ring in an end hole 24 during insertion of the fastener into the bone plate system 20.
The shape of the end hole 24 may push the fmgers 232 inwards past the edge of the groove 204 of a fastener 200 when the groove is inserted into a ring 230 so that the groove passes an upper edge of the ring slots 240. The inward positioned fingers 232 may inhibit fastener 200 from backing out of the ring 230 and the hole 24.
When the fastener 200 is inserted into the ring 230, the fastener head 202 may expand the outside surface 48 of the ring against the inner surface 46 of the end hole 24 to fix the fastener 200 to the ring 230, and the ring to the plate 22.
Figure 21 is a perspective view of an embodiment of a ring that may be used with fasteners 200 that have rims 204, such as the fasteners shown in Figure 15-17. Ring 430 may include bottom 432, top 434, outer surface 48, inner surface 60, gap 36, notches 436, and ridges 438. Notches 436 divide the ring 430 into segments or paddles 440. Notches 436 and gap 36 may allow ring 430 to contract, facilitating the insertion of the ring into a hole 24 of a bone plate 22. Notches 436 and gap 36 may also allow ring 430 to expand when a fastener head 202 passes into the ring to fix the position of the fastener relative to the bone plate 22. Notches 436 may also allow paddles 436 to bend outwards during insertion of a fastener 200. The outer surface 48 and/or the inner surface 60 may be textured. The inner surface of the ring 430 may be tapered to correspond to the taper of a fastener head 202.
Figure 22 illustrates an embodiment of an insertion tool/extraction tool 450 for use with a fastener 200 and ring 430. Insertion/extraction too1450 may include shaft 452, handle 454, driver head 456, and extraction member 458. At one end of shaft 452 is handle 454 for tuming the tool during insertion and removal of a fastener 200. The illustration shows a T-handle, but any other type of handle that allows sufficient torque to be applied to the fastener 200 to allow for insertion or removal of the fastener may be used. At the opposite end of shaft 452 from handle 454 is driver head 456. The outer surface of driver head 456 may be shaped complementary to the shape of the opening 210 in the head 202 of the fastener 200.
The extraction member 458 shown in Figure 22 may include grip 459, passage 460, (shown in Figure 23c), tip 462, and extraction head 464. The passage 460 extends through the grip 459 and the extraction head 464.
During the insertion process, extraction member 458 may be removed from shaft 452. To extract a fastener from a ring 430, extraction member 458 may be slid back on to shaft 452. Driver head 456 is inserted into the opening 210 of the fastener 200. Extraction member 458 slides down shaft 452 until tip 462 of extraction head 464 contacts the top of the ring 430. Downwards pressure on the extraction member 458 forces paddles 440 of the ring 430 outwards, and disengages the ridge 438 on the paddles 440 from the rim 204 on the fastener head 202. The fastener 200 may then be backed out of the plate 22 by rotating the shaft 452 with the handle 454. Preferably, rotating shaft 452 does not rotate the extraction member 458.
Figure 23a, 23b, and 23c show partial cross sectional views of a threaded fastener 200, ring 430, and insertion/extraction too1450 during the insertion and extraction processes.
Referring to Figure 23a, driver head 456 of insertion/extraction too1450 is inserted in opening 210 of fastener head 202. Ring 430 is positioned inside a hole 24 in a bone plate and the bone plate is positioned on a bone (bone and bone plate not shown). Fastener 200 is screwed into the bone until the outer surface of fastener head 202 contacts the surfaces of the paddles 440. The tapering of the outer surface of fastener head 202 provides a ramping force on the surfaces of the paddles 440, to bend the paddles outwards as fastener 200 is screwed farther into the bone.
In Figure 23b, fastener 200 has been screwed in to the desired depth. Fastener head 202 penetrates ring 430 far enough to allow ridges 438 to snap onto rim 204 on fastener head 202.
Driver head 456 of insertion/extraction too1450 is shown still inserted in opening 210 prior to removal from the opening. After insertion, if the fastener 200 becomes loose within the bone, fastener backout from the bone plate may be resisted by the ridge-rim connection between fastener head 202 and ring 430. Thus, even if the fastener shank loosens within the bone, the fastener head 202 will tend to remain within ring 430 in the hole 24 of the plate 22 so as not to protrude from the plate into surrounding body tissue. In some embodiments, there may be some freedom of movement in the connection between the ridges 438 on the paddles 440 and the rim 204 to allow a fastener 200 to back out slightly from a bone after insertion. Typically, the freedom of movement is limited so that the fastener head 202 may not protrude from the plate 22.
Figure 23c shows insertion/extraction too1250 being used to remove a fastener 200. Driver head 256 is inserted in opening 210 of fastener 200. Extraction head 464 is slid down shaft 452 of insertion/extraction too1450 until the sloped surface of tip 462 applies a wedging force against the sloped upper surfaces of paddles 440. The wedging force bends the paddles 440 outwards to disengage the ridges 438 from the rim 204. Fastener 200 may then be backed out of the bone, the ring 430 and the plate 22.
The plate, fasteners, and locking mechanisms may be made of steel (e.g, stainless steel), titanium, steel alloys or titanium alloys. These materials are generally nontoxic, bio-compatible, strong, and non-corrosive. Other materials that have these properties may also be used. The plate and the rings may be made of a number of bio-compatible materials including metals, plastics, and composites.
Any of the embodiments described above may be used individually or in combination with other embodiments described above. Further modifications and alternative embodiments of various aspects of the invention will be apparent to those skilled in the art in view of this description. Accordingly, this description is to be construed as illustrative only and is for the purpose of teaching those skilled in the art the general manner of carrying out the invention. It is to be understood that the forms of the invention shown and described herein are to be taken as examples of embodiments. Elements and materials may be substituted for those illustrated and described herein, parts and processes may be reversed, and certain features of the invention may be utilized independently, all as would be apparent to one skilled in the art after having the benefit of this description of the invention. Changes may be made in the elements described herein without departing from the spirit and scope of the invention as described in the following claims.
Claims (90)
1. A bone plate system comprising:
a plate configured to stabilize a bone structure;
a hole passing through the plate;
a ring positionable within the hole, the ring comprising a deflectable portion;
a fastener positionable through the ring such that a head of the fastener engages the ring, the fastener configured to couple the plate to a bone wherein said ring is configured to move within the hole to allow a shank of the fastener to be inserted into the bone at an angle that is oblique to the plate;
and wherein the deflectable portion of the ring is configured to deflect outwards when the head is initially positioned in the ring and wherein the deflectable portion is configured to deflect inwards after passage of a portion of the head into the ring to couple the fastener to the ring so that removal of the fastener from the plate is inhibited.
a plate configured to stabilize a bone structure;
a hole passing through the plate;
a ring positionable within the hole, the ring comprising a deflectable portion;
a fastener positionable through the ring such that a head of the fastener engages the ring, the fastener configured to couple the plate to a bone wherein said ring is configured to move within the hole to allow a shank of the fastener to be inserted into the bone at an angle that is oblique to the plate;
and wherein the deflectable portion of the ring is configured to deflect outwards when the head is initially positioned in the ring and wherein the deflectable portion is configured to deflect inwards after passage of a portion of the head into the ring to couple the fastener to the ring so that removal of the fastener from the plate is inhibited.
2. The bone plate system of claim 1, wherein the deflectable portion of the ring comprises a ridge that is configured to engage a top surface of the head of the fastener.
3. The bone plate system of claim 1, wherein the deflectable portion comprises a finger of the ring, and wherein the finger extends into a groove in the head of the fastener during use.
4. The bone plate system according to claim 1 wherein said hole extends from a top surface of the plate to a bottom surface of the plate, wherein a portion of the plate forms a wall of the hole; and wherein said ring comprises:
a base;
a projection extending upwards from the base; and a finger extending from the projection substantially parallel to the base, the finger configured to secure the head in the ring during use.
a base;
a projection extending upwards from the base; and a finger extending from the projection substantially parallel to the base, the finger configured to secure the head in the ring during use.
5. The system of claim 4, wherein said head of said fastener comprises a groove, and wherein the finger on the ring snaps into the groove to secure the fastener to the ring during use.
6. The system of claim 5, wherein the groove is a rim formed along a top edge of the fastener head.
7. The system of claim 5, wherein the finger fits in the groove, and wherein the fit between the finger and the groove allows the fastener head some axial freedom of movement within the ring.
8. The system of claim 4, wherein said ring is configured to swivel within said hole.
9. The system of claim 8, wherein said angle of the fastener is less than about 45 degrees relative to a plane substantially perpendicular to the plate.
10. The system of claim 8, wherein said angle of the fastener is less than about 30 degrees relative to a plane substantially perpendicular to the plate.
11. The system of claim 8, wherein said angle of the fastener is less than about 15 degrees relative to a plane substantially perpendicular to the plate.
12. The system of claim 4, further comprising texturing on a portion of an inner surface of the hole.
13. The system of claim 4, further comprising texturing on an outer surface of the ring.
14. The system of claim 4, wherein the head is configured to expand the ring against the wall of the hole to fix the fastener in position relative to the plate during use.
15. The system of claim 4, wherein the ring substantially surrounds the head during use.
16. The system of claim 4, further comprising a gap in a wall of the ring, said gap configured to allow the ring to expand and contract.
17. The system of claim 4, wherein a diameter of a portion of the head is greater than a diameter of the inner surface of the ring, so that the head exerts an expanding force on the ring during use.
18. The system of claim 4, wherein the head comprises a tapered outer surface, said tapered outer surface configured to expand the ring against the wall of the hole during insertion of the head into the ring.
19. The system of claim 4, wherein the ring comprises a tapered inner surface, said tapered inner surface configured to contact an outer surface of the head during insertion of the head into the ring.
20. The system of claim 4, wherein the hole comprises an inner surface and a width across the hole, the inner surface being curved such that the width varies in an axial direction along the hole.
21. The system of claim 4, wherein the hole comprises a substantially curved inner surface, and wherein the ring comprises a substantially curved outer surface, the curved outer surface of the ring complementing the curved inner surface of the hole.
22. The system of claim 4, wherein the plate comprises an upper surface and a lower surface, and wherein the ring comprises an outer surface and an outer ring width, and wherein the hole comprises a substantially curved inner surface and a width defined across the inner surface, the width of the hole varying in an axial direction along the hole, and wherein the width of the hole is greater than about the outer ring width at a location between the upper surface and the lower surface, and wherein the width of the hole is not greater than the outer ring width proximate the upper surface and the lower surface.
23. The system of claim 4, wherein the plate comprises an upper surface and a lower surface, and wherein the hole extends between the upper and lower surfaces, the hole having a width that varies in an axial direction along the hole, and wherein the ring is disposed within the hole, the ring having an outer ring width that is greater than about the width of the hole proximate the upper and lower surfaces, the outer ring width being sized relative to the width of the hole proximate the upper and lower surfaces to inhibit the ring from being removed from the hole.
24. The system of claim 4, wherein the ring is configured to reside within the hole without extending above an upper surface of the plate when the fastener couples the plate to a bone during use.
25. The system of claim 4, wherein the ring is configured to reside within the hole with a portion of the ring extending above an upper surface of the plate when the fastener couples the plate to a bone during use.
26. The system of claim 4, further comprising:
an additional hole in the plate;
an additional fastener comprising a head and a shank for coupling the plate to the bone; and an additional ring for coupling the additional fastener to the plate.
an additional hole in the plate;
an additional fastener comprising a head and a shank for coupling the plate to the bone; and an additional ring for coupling the additional fastener to the plate.
27. The system of claim 26, wherein the fastener shank extends from a bottom of the plate at a first oblique angle relative to the plate, and wherein the additional fastener shank extends from a bottom of the plate at a second oblique angle relative to the plate.
28. The system of claim 27, wherein the fastener shank extends from the bottom of the plate in a diverging direction relative to the additional fastener shank during use.
29. The system of claim 27, wherein the fastener shank extends from the bottom of the plate in a converging direction relative to the additional fastener shank during use.
30. The system of claim 4, wherein the fastener comprises a bone screw.
31. The bone plate system according to claim 1, wherein said hole extends from a top surface of the plate to a bottom surface of the plate, and a portion of the plate forms a wall of the hole;
a first portion of the head of said fastener has a first diameter and a second portion of the head of said fastener has a second diameter that is smaller than the first diameter;
said ring is configured to inhibit removal of the fastener from the plate when the ring is positioned in the hole and the fastener is positioned through the ring, the ring comprising an outer surface, an inner surface and a ridge on a portion of the inner surface; and wherein said ridge is expanded outwards when the first portion of the head passes into the ring, and wherein the ridge moves inward until the ridge contacts the head when the second portion of the head is positioned next to the ridge during use.
a first portion of the head of said fastener has a first diameter and a second portion of the head of said fastener has a second diameter that is smaller than the first diameter;
said ring is configured to inhibit removal of the fastener from the plate when the ring is positioned in the hole and the fastener is positioned through the ring, the ring comprising an outer surface, an inner surface and a ridge on a portion of the inner surface; and wherein said ridge is expanded outwards when the first portion of the head passes into the ring, and wherein the ridge moves inward until the ridge contacts the head when the second portion of the head is positioned next to the ridge during use.
32. The system of claim 31, wherein the second portion of the head comprises a groove in a portion of an outer surface of the head, and wherein the ridge is configured to snap into the groove to secure the fastener to the ring during use.
33. The system of claim 32, wherein a width of the groove is larger than a width of the ridge to provide the head with some axial freedom of movement within the ring.
34. The system of claim 32, wherein the ring further comprises an opening in a wall of the ring, the opening configured to allow the ring to expand and contract.
35. The system of claim 31, wherein the ring further comprises a plurality of notches in the ring.
36. The system of claim 31, further comprising texturing on a portion of an inner surface of the hole.
37. The system of claim 31, further comprising texturing on a portion of the outer surface of the ring.
38. The system of claim 31, wherein the head is configured to contact the inner surface of the ring and expand the ring against the wall of the hole during use.
39. The system of claim 31, wherein the ring is configured to substantially surround the head during use.
40. The system of claim 31, wherein the ring is configured to rotate freely relative to the wall when the ring is coupled to the fastener.
41. The system of claim 31, wherein the head comprises a tapered outer surface configured to expand the ring against an inner surface of the hole when the head is positioned within the ring during use.
42. The system of claim 31, wherein the inner surface of the ring is tapered.
43. The system of claim 31, wherein the hole comprises an inner surface and a width across the hole, the inner surface being curved such that the width varies in a direction axially along the hole.
44. The system of claim 31, wherein the hole comprises a substantially curved inner surface, and wherein the ring further comprises a substantially curved outer surface, wherein the curved outer surface of the ring engages the curved inner surface of the bore to allow the ring to swivel within the hole.
45. The system of claim 31, wherein the plate comprises an upper surface and a lower surface, and wherein the ring outer surface has an outer ring width, and wherein the hole comprises a substantially curved inner surface and a width defined across the inner surface, the width of the hole varying in a direction axially along the hole, and wherein the width of the hole is greater than about the outer ring width at a location between the upper and lower plate surfaces, and wherein the width of the hole is not greater than the outer ring width proximate the upper and lower plate surfaces.
46. The system of claim 31, wherein the plate comprises an upper surface and a lower surface, and wherein the hole extends between the upper and lower plate surfaces, the hole comprising a width that varies in a direction axially along the hole, and wherein the ring is disposed within the hole, the ring having an outer ring width that is greater than about the width of the hole proximate the upper and lower plate surfaces, the outer ring width being sized relative to the width of the hole proximate the upper and lower plate surfaces to inhibit the ring from being removed from the hole.
47. The system of claim 31, wherein the ring resides within the hole without extending above an upper surface of the plate when the fastener couples the plate to the bone during use.
48. The system of claim 31, wherein the ring is configured to reside within the hole with a portion of the ring extending above an upper surface of the plate when the fastener couples the plate to the bone during use.
49. The system of claim 31, wherein said ring is configured to swivel within said hole.
50. The system of claim 31, wherein said angle is less than about 45 degrees relative to a plane substantially perpendicular to the plate.
51. The system of claim 31, wherein said angle is less than about 30 degrees relative to a plane substantially perpendicular to the plate.
52. The system of claim 31, wherein said angle is less than about 15 degrees relative to a plane substantially perpendicular to the plate.
53. The system of claim 31, further comprising an insertion tool comprising:
a shaft;
a handle at a first end of the shaft; and a driver head at a second end of the shaft, the driver head configured to mate with an opening in the head.
a shaft;
a handle at a first end of the shaft; and a driver head at a second end of the shaft, the driver head configured to mate with an opening in the head.
54. The system of claim 53, further comprising an extraction tool comprising:
a hollow shaft, said insertion tool configured to be rotatable within said hollow shaft to allow the handle of the insertion tool to be rotated to cause the removal of the fastener from the bone;
a handle at a first end of the hollow shaft; and an extraction head comprising a tip at a second end of the shaft;
wherein the driver head of the insertion tool extends past the extraction head into the opening of the fastener, and the extraction head tip pushes the ridge of the ring off of the fastener to allow the fastener to be removed from the bone.
a hollow shaft, said insertion tool configured to be rotatable within said hollow shaft to allow the handle of the insertion tool to be rotated to cause the removal of the fastener from the bone;
a handle at a first end of the hollow shaft; and an extraction head comprising a tip at a second end of the shaft;
wherein the driver head of the insertion tool extends past the extraction head into the opening of the fastener, and the extraction head tip pushes the ridge of the ring off of the fastener to allow the fastener to be removed from the bone.
55. The system of claim 31, further comprising:
an additional hole in the plate;
an additional fastener comprising a head and a shank for coupling the plate to the bone; and an additional ring for coupling the additional fastener to the plate.
an additional hole in the plate;
an additional fastener comprising a head and a shank for coupling the plate to the bone; and an additional ring for coupling the additional fastener to the plate.
56. The system of claim 55, wherein the fastener shank extends from a bottom of the plate at a first oblique angle relative to the plate, and wherein the additional fastener shank extends from the bottom of the plate at a second oblique angle relative to the plate during use.
57. The system of claim 56, wherein the fastener shank and the additional fastener shank extend from the bottom of the plate in diverging directions relative to each other.
58. The system of claim 56, wherein the fastener shank and the additional fastener shank extend from the bottom of the plate in converging directions relative to each other.
59. The system of claim 31, wherein the fastener comprises a bone screw.
60. The bone plate system according to claim 1, wherein a portion of the plate forms a wall of the hole;
said head of said fastener further comprises:
an opening configured to accept a driver head of an insertion tool;
an outer surface; and a plurality of apertures extending from the outer surface to the opening;
and said bone plate system further comprising a locking mechanism comprising a top and a plurality of elongated members extending from the top the locking mechanism configured to insert in the opening of the head with a portion of the elongated members extendable through the apertures in the head of the fastener during use.
said head of said fastener further comprises:
an opening configured to accept a driver head of an insertion tool;
an outer surface; and a plurality of apertures extending from the outer surface to the opening;
and said bone plate system further comprising a locking mechanism comprising a top and a plurality of elongated members extending from the top the locking mechanism configured to insert in the opening of the head with a portion of the elongated members extendable through the apertures in the head of the fastener during use.
61. The system of claim 60, wherein the ring comprises at least one groove extending on a portion of an inner surface of the ring, and wherein elongated members of the locking mechanism extend through the plurality of apertures on the head, and wherein the elongated members engage said at least one groove on the ring to secure the fastener to the ring.
62. The system of claim 60 wherein said ring is configured to swivel within the hole.
63. The system of claim 60, wherein said angle is less than about 45 degrees relative to a plane substantially perpendicular to the plate.
64. The system of claim 60, wherein said angle is less than about 30 degrees relative to a plane substantially perpendicular to the plate.
65. The system of claim 60, wherein said angle is less than about 15 degrees relative to a plane substantially perpendicular to the plate.
66. The system of claim 61, wherein a thickness of the portion of each elongated member that engages the groove is less than a height of the groove to allow the fastener head some axial freedom of movement within the ring.
67. The system of claim 60, wherein the head further comprises a rim running one portion of a top of the head, substantially around the outer surface proximate the top surface, wherein the rim is configured to interact with the ring to limit insertion depth of the fastener in the ring.
68. The system of claim 60, wherein the opening on the head further comprises a groove from a top surface of the head toward a bottom of the opening, and an aperture of the plurality of apertures extends into the groove.
69. The system of claim 68, wherein an elongated member of the locking mechanism is configured to mate with the groove on the opening so that the elongated member slides down the groove and engages the aperture in the groove during insertion of the locking mechanism into the head.
70. The system of claim 60, further comprising texturing on a portion of an inner surface of the hole.
71. The system of claim 60, further comprising texturing on a portion of an outer surface of the ring.
72. The system of claim 60, wherein the head is configured to expand the ring against the hole during insertion of the head into the ring.
73. The system of claim 60, wherein the ring substantially surrounds the head during use.
74. The system of claim 60 wherein said ring is configured to swivel within the hole.
75. The system of claim 60, further comprising a gap in a wall of the ring.
76. The system of claim 60, wherein a diameter of the head is greater than a diameter of an inner surface of the ring, so that the head exerts an expanding force on the ring during use.
77. The system of claim 60, wherein the hole has an inner surface and a width across the hole, the inner surface being curved such that the width varies in an axial direction along the hole.
78. The system of claim 60, wherein the hole has a substantially curved inner surface, and wherein the ring further comprises a substantially curved outer surface, the curved outer surface shaped to engage the curved inner surface to allow the ring to swivel within the hole.
79. The system of claim 60, wherein the plate comprises an upper surface and a lower surface, and wherein the ring comprises an outer surface and an outer ring width, and wherein the hole comprises a substantially curved inner surface and a width defined across the inner surface, the width of the hole varying in a direction axially along the hole, and wherein the width of the hole is greater than about the outer ring width at a location between the upper and lower surfaces, and wherein the width of the hole is not greater than the outer ring width proximate the upper and lower surfaces.
80. The system of claim 60, wherein the plate comprises an upper surface and a lower surface, and wherein the hole extends between the upper and lower surfaces, the hole comprising a width that varies in a direction axially along the hole, and wherein the ring is disposed within the hole, the ring further comprising an outer ring width that is greater than about the width of the hole proximate the upper and lower surfaces, the outer ring width being sized relative to the width of the hole proximate the upper and lower surfaces to inhibit the ring from being removed from the hole.
81. The system of claim 60, wherein the ring is configured to reside within the hole without extending above an upper surface of the plate during use.
82. The system of claim 60, wherein the fastener is configured to be angulated relative to the plate such that the ring extends from the hole beyond a surface of the plate during use.
83. The system of claim 60, further comprising:
an additional hole in the plate;
an additional fastener comprising a head and a shank for coupling the plate to the bone; and an additional ring positionable within the additional hole between the plate and the additional fastener.
an additional hole in the plate;
an additional fastener comprising a head and a shank for coupling the plate to the bone; and an additional ring positionable within the additional hole between the plate and the additional fastener.
84. The system of claim 83, wherein the additional ring is configured to move within the additional hole to allow the additional fastener to be positioned and inserted into the bone at an angle that is oblique to the plate.
85. The system of claim 83, wherein the shank is positioned at a first oblique angle relative to the plate, and wherein the additional fastener shank is positioned at a second oblique angle relative to the plate.
86. The system of claim 85, wherein the shank and the additional fastener shank extend in diverging directions relative to each other.
87. The system of claim 85, wherein the shank and the additional fastener shank extend in converging directions relative to each other.
88. The system of claim 60, wherein the insertion tool further comprises:
a shaft;
a handle disposed at a first end of the shaft; and the driver head disposed at a second end of the shaft, the driver head configured to couple to the opening on the head to allow insertion of the fastener through the ring and into the bone, the driver head comprising a hollow section configured to slide over and compress the locking mechanism during insertion of the fastener through the ring and into the bone, the hollow section configured to inhibit the elongated members from projecting through the apertures in the head during insertion of the fastener;
wherein removal of the insertion tool after insertion of the fastener through the ring and into the bone allows the locking mechanism to expand in the opening of the head, the expansion of the locking mechanism allowing the elongated members to project through the apertures in the head to engage the ring and secure the head in to the ring.
a shaft;
a handle disposed at a first end of the shaft; and the driver head disposed at a second end of the shaft, the driver head configured to couple to the opening on the head to allow insertion of the fastener through the ring and into the bone, the driver head comprising a hollow section configured to slide over and compress the locking mechanism during insertion of the fastener through the ring and into the bone, the hollow section configured to inhibit the elongated members from projecting through the apertures in the head during insertion of the fastener;
wherein removal of the insertion tool after insertion of the fastener through the ring and into the bone allows the locking mechanism to expand in the opening of the head, the expansion of the locking mechanism allowing the elongated members to project through the apertures in the head to engage the ring and secure the head in to the ring.
89. The system of claim 60, wherein the fastener comprises a bone screw.
90. Use of the system according to any one of claims 1-89 for stabilizing a spine.
Applications Claiming Priority (3)
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US09/479,458 US6331179B1 (en) | 2000-01-06 | 2000-01-06 | System and method for stabilizing the human spine with a bone plate |
PCT/US2001/000724 WO2001049191A1 (en) | 2000-01-06 | 2001-01-08 | System and method for stabilizing the human spine with a bone plate |
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CA2396535C true CA2396535C (en) | 2009-05-19 |
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Families Citing this family (454)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9161793B2 (en) | 1993-01-21 | 2015-10-20 | Acumed Llc | Axial tension screw |
US6454769B2 (en) * | 1997-08-04 | 2002-09-24 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
FR2780631B1 (en) * | 1998-07-06 | 2000-09-29 | Dimso Sa | SPINAL OSTEOSYNTHESIS DEVICE FOR ANTERIOR FIXATION WITH PLATE |
US6331179B1 (en) * | 2000-01-06 | 2001-12-18 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
US20040153073A1 (en) | 2000-02-01 | 2004-08-05 | Hand Innovations, Inc. | Orthopedic fixation system including plate element with threaded holes having divergent axes |
AU757023B2 (en) * | 2000-06-26 | 2003-01-30 | Stryker European Holdings I, Llc | Bone screw retaining system |
FR2810532B1 (en) * | 2000-06-26 | 2003-05-30 | Stryker Spine Sa | BONE IMPLANT WITH ANNULAR LOCKING MEANS |
WO2002003885A2 (en) | 2000-07-10 | 2002-01-17 | Michelson Gary K | Flanged interbody spinal fusion implants |
US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
DE20014648U1 (en) * | 2000-08-24 | 2002-01-10 | Stryker Trauma Gmbh | osteosynthesis |
US7485132B1 (en) | 2000-10-06 | 2009-02-03 | Abbott Spine Inc. | Transverse connector with cam activated engagers |
US6887241B1 (en) * | 2000-10-06 | 2005-05-03 | Spinal Concepts, Inc. | Adjustable transverse connector with cam activated engagers |
US6740088B1 (en) * | 2000-10-25 | 2004-05-25 | Sdgi Holdings, Inc. | Anterior lumbar plate and method |
US6605090B1 (en) * | 2000-10-25 | 2003-08-12 | Sdgi Holdings, Inc. | Non-metallic implant devices and intra-operative methods for assembly and fixation |
US8377100B2 (en) | 2000-12-08 | 2013-02-19 | Roger P. Jackson | Closure for open-headed medical implant |
US6726689B2 (en) | 2002-09-06 | 2004-04-27 | Roger P. Jackson | Helical interlocking mating guide and advancement structure |
US6702817B2 (en) * | 2001-01-19 | 2004-03-09 | Aesculap Ag & Co. Kg | Locking mechanism for a bone screw |
US6902565B2 (en) * | 2001-02-21 | 2005-06-07 | Synthes (U.S.A.) | Occipital plate and system for spinal stabilization |
FR2822052B1 (en) * | 2001-03-15 | 2003-09-19 | Stryker Spine Sa | ANCHOR WITH LOCK FOR RACHIDIAN OSTEOSYNTHESIS SYSTEM |
FR2822053B1 (en) * | 2001-03-15 | 2003-06-20 | Stryker Spine Sa | ANCHORING MEMBER WITH SAFETY RING FOR SPINAL OSTEOSYNTHESIS SYSTEM |
WO2002076317A1 (en) * | 2001-03-27 | 2002-10-03 | Ferree Bret A | Hinged anterior thoracic/lumbar plate |
FR2823096B1 (en) * | 2001-04-06 | 2004-03-19 | Materiel Orthopedique En Abreg | PLATE FOR LTE AND LTE VERTEBRATE OSTEOSYNTHESIS DEVICE, OSTEOSYNTHESIS DEVICE INCLUDING SUCH A PLATE, AND INSTRUMENT FOR LAYING SUCH A PLATE |
US6599290B2 (en) | 2001-04-17 | 2003-07-29 | Ebi, L.P. | Anterior cervical plating system and associated method |
US20050240187A1 (en) | 2004-04-22 | 2005-10-27 | Huebner Randall J | Expanded fixation of bones |
US7717945B2 (en) | 2002-07-22 | 2010-05-18 | Acumed Llc | Orthopedic systems |
US7862587B2 (en) | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
US8292926B2 (en) | 2005-09-30 | 2012-10-23 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
US8353932B2 (en) | 2005-09-30 | 2013-01-15 | Jackson Roger P | Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member |
US10729469B2 (en) | 2006-01-09 | 2020-08-04 | Roger P. Jackson | Flexible spinal stabilization assembly with spacer having off-axis core member |
US10258382B2 (en) | 2007-01-18 | 2019-04-16 | Roger P. Jackson | Rod-cord dynamic connection assemblies with slidable bone anchor attachment members along the cord |
US6887242B2 (en) * | 2001-10-17 | 2005-05-03 | Ortho Innovations, Llc | Split ring bone screw for a spinal fixation system |
US7766947B2 (en) | 2001-10-31 | 2010-08-03 | Ortho Development Corporation | Cervical plate for stabilizing the human spine |
US6679883B2 (en) | 2001-10-31 | 2004-01-20 | Ortho Development Corporation | Cervical plate for stabilizing the human spine |
US7070599B2 (en) | 2002-07-24 | 2006-07-04 | Paul Kamaljit S | Bone support assembly |
US6755833B1 (en) | 2001-12-14 | 2004-06-29 | Kamaljit S. Paul | Bone support assembly |
AU2002220448B2 (en) | 2001-12-24 | 2005-06-30 | Synthes Gmbh | Device for performing osteosynthesis |
US6932820B2 (en) * | 2002-01-08 | 2005-08-23 | Said G. Osman | Uni-directional dynamic spinal fixation device |
US20040019353A1 (en) | 2002-02-01 | 2004-01-29 | Freid James M. | Spinal plate system for stabilizing a portion of a spine |
US7303564B2 (en) | 2002-02-01 | 2007-12-04 | Spinal Concepts, Inc. | Spinal plate extender system and method |
US9101422B2 (en) * | 2002-02-01 | 2015-08-11 | Zimmer Spine, Inc. | Spinal plate system for stabilizing a portion of a spine |
AR038680A1 (en) | 2002-02-19 | 2005-01-26 | Synthes Ag | INTERVERTEBRAL IMPLANT |
US6626909B2 (en) | 2002-02-27 | 2003-09-30 | Kingsley Richard Chin | Apparatus and method for spine fixation |
US7077843B2 (en) * | 2002-06-24 | 2006-07-18 | Lanx, Llc | Cervical plate |
US7001389B1 (en) | 2002-07-05 | 2006-02-21 | Navarro Richard R | Fixed and variable locking fixation assembly |
US6989012B2 (en) * | 2002-07-16 | 2006-01-24 | Sdgi Holdings, Inc. | Plating system for stabilizing a bony segment |
US7004944B2 (en) * | 2002-07-16 | 2006-02-28 | Sdgi Holdings, Inc. | Bone plate fastener retaining mechanisms and methods |
US7060067B2 (en) * | 2002-08-16 | 2006-06-13 | Sdgi Holdings, Inc. | Systems, instrumentation and techniques for retaining fasteners relative to a bone plate |
US7306603B2 (en) | 2002-08-21 | 2007-12-11 | Innovative Spinal Technologies | Device and method for percutaneous placement of lumbar pedicle screws and connecting rods |
US8257402B2 (en) | 2002-09-06 | 2012-09-04 | Jackson Roger P | Closure for rod receiving orthopedic implant having left handed thread removal |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
US8282673B2 (en) | 2002-09-06 | 2012-10-09 | Jackson Roger P | Anti-splay medical implant closure with multi-surface removal aperture |
FR2845588B1 (en) * | 2002-10-09 | 2006-12-15 | Biotech Internat | SELF-LOCKING OSTEOSYNTHESIS DEVICE |
US7476228B2 (en) * | 2002-10-11 | 2009-01-13 | Abdou M Samy | Distraction screw for skeletal surgery and method of use |
CA2504215A1 (en) | 2002-10-28 | 2004-05-13 | Blackstone Medical, Inc. | Bone plate assembly provided with screw locking mechanisms |
US7682392B2 (en) * | 2002-10-30 | 2010-03-23 | Depuy Spine, Inc. | Regenerative implants for stabilizing the spine and devices for attachment of said implants |
US9539012B2 (en) | 2002-10-30 | 2017-01-10 | Zimmer Spine, Inc. | Spinal stabilization systems with quick-connect sleeve assemblies for use in surgical procedures |
US7250052B2 (en) | 2002-10-30 | 2007-07-31 | Abbott Spine Inc. | Spinal stabilization systems and methods |
US20040147928A1 (en) * | 2002-10-30 | 2004-07-29 | Landry Michael E. | Spinal stabilization system using flexible members |
US20040133278A1 (en) * | 2002-10-31 | 2004-07-08 | Marino James F. | Spinal disc implant |
EP1415605B1 (en) * | 2002-11-04 | 2010-10-13 | Zimmer GmbH | Bone fixation system |
EP1415604B1 (en) * | 2002-11-04 | 2008-07-09 | Zimmer GmbH | Bone fixationsystem |
KR101081269B1 (en) | 2002-11-19 | 2011-11-08 | 어큠드 엘엘씨 | Adjustable bone plates |
US7048739B2 (en) * | 2002-12-31 | 2006-05-23 | Depuy Spine, Inc. | Bone plate and resilient screw system allowing bi-directional assembly |
US7175624B2 (en) | 2002-12-31 | 2007-02-13 | Depuy Spine, Inc. | Bone plate and screw system allowing bi-directional assembly |
US7914561B2 (en) | 2002-12-31 | 2011-03-29 | Depuy Spine, Inc. | Resilient bone plate and screw system allowing bi-directional assembly |
US7331961B2 (en) * | 2003-01-10 | 2008-02-19 | Abdou M Samy | Plating system for bone fixation and subsidence and method of implantation |
US7160303B2 (en) * | 2003-01-23 | 2007-01-09 | Cervitech, Inc. | Medical implant with a secured bone screw |
US7341591B2 (en) | 2003-01-30 | 2008-03-11 | Depuy Spine, Inc. | Anterior buttress staple |
US8172885B2 (en) | 2003-02-05 | 2012-05-08 | Pioneer Surgical Technology, Inc. | Bone plate system |
CA2515247C (en) | 2003-02-06 | 2010-10-05 | Synthes (U.S.A.) | Intervertebral implant |
US7278997B1 (en) | 2003-03-07 | 2007-10-09 | Theken Spine, Llc | Instrument guide and implant holder |
US7722653B2 (en) | 2003-03-26 | 2010-05-25 | Greatbatch Medical S.A. | Locking bone plate |
DE602004028451D1 (en) * | 2003-03-26 | 2010-09-16 | Swiss Orthopedic Solutions Sa | FIXING BONE PLATE |
US7905883B2 (en) * | 2003-03-26 | 2011-03-15 | Greatbatch Medical S.A. | Locking triple pelvic osteotomy plate and method of use |
US8540753B2 (en) | 2003-04-09 | 2013-09-24 | Roger P. Jackson | Polyaxial bone screw with uploaded threaded shank and method of assembly and use |
US7776047B2 (en) | 2003-04-09 | 2010-08-17 | Depuy Spine, Inc. | Guide for spinal tools, implants, and devices |
US7909829B2 (en) | 2003-06-27 | 2011-03-22 | Depuy Spine, Inc. | Tissue retractor and drill guide |
US7935123B2 (en) * | 2003-04-09 | 2011-05-03 | Depuy Acromed, Inc. | Drill guide with alignment feature |
US7621918B2 (en) * | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US6716214B1 (en) * | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US20040204712A1 (en) * | 2003-04-09 | 2004-10-14 | Eric Kolb | Bone fixation plates |
US7416553B2 (en) * | 2003-04-09 | 2008-08-26 | Depuy Acromed, Inc. | Drill guide and plate inserter |
US8348982B2 (en) * | 2003-04-21 | 2013-01-08 | Atlas Spine, Inc. | Bone fixation plate |
US7481829B2 (en) * | 2003-04-21 | 2009-01-27 | Atlas Spine, Inc. | Bone fixation plate |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
FR2856119B1 (en) * | 2003-06-16 | 2005-12-30 | Surfic Technologies | DEVICE FOR BEING FITTED TO AT LEAST ONE MEDIUM, AND IN PARTICULAR A SURGICAL IMPLANT INTENDED TO BE FITTED TO A BONE |
FR2856272B1 (en) * | 2003-06-17 | 2005-09-16 | Scient X | DEVICE FOR ANTI-EXTRACTING AN ANCHOR SCREW FOR AN OSTEOSYNTHESIS ELEMENT |
US8092500B2 (en) | 2007-05-01 | 2012-01-10 | Jackson Roger P | Dynamic stabilization connecting member with floating core, compression spacer and over-mold |
US8137386B2 (en) | 2003-08-28 | 2012-03-20 | Jackson Roger P | Polyaxial bone screw apparatus |
US7766915B2 (en) | 2004-02-27 | 2010-08-03 | Jackson Roger P | Dynamic fixation assemblies with inner core and outer coil-like member |
US8377102B2 (en) | 2003-06-18 | 2013-02-19 | Roger P. Jackson | Polyaxial bone anchor with spline capture connection and lower pressure insert |
US8398682B2 (en) | 2003-06-18 | 2013-03-19 | Roger P. Jackson | Polyaxial bone screw assembly |
US8936623B2 (en) | 2003-06-18 | 2015-01-20 | Roger P. Jackson | Polyaxial bone screw assembly |
US7967850B2 (en) | 2003-06-18 | 2011-06-28 | Jackson Roger P | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
US8366753B2 (en) | 2003-06-18 | 2013-02-05 | Jackson Roger P | Polyaxial bone screw assembly with fixed retaining structure |
US8814911B2 (en) | 2003-06-18 | 2014-08-26 | Roger P. Jackson | Polyaxial bone screw with cam connection and lock and release insert |
US8257398B2 (en) * | 2003-06-18 | 2012-09-04 | Jackson Roger P | Polyaxial bone screw with cam capture |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
US7309340B2 (en) | 2003-06-20 | 2007-12-18 | Medicinelodge, Inc. | Method and apparatus for bone plating |
JP2007515990A (en) * | 2003-06-20 | 2007-06-21 | アキュームド・エルエルシー | Bone plate with openings that are threaded during surgery |
US7909848B2 (en) | 2003-06-27 | 2011-03-22 | Depuy Spine, Inc. | Tissue retractor and guide device |
US6945975B2 (en) * | 2003-07-07 | 2005-09-20 | Aesculap, Inc. | Bone fixation assembly and method of securement |
US6945974B2 (en) * | 2003-07-07 | 2005-09-20 | Aesculap Inc. | Spinal stabilization implant and method of application |
US7455673B2 (en) * | 2003-07-08 | 2008-11-25 | Yechiel Gotfried | Intramedullary nail system and method for fixation of a fractured bone |
KR100552117B1 (en) * | 2003-07-22 | 2006-02-13 | 유앤아이 주식회사 | cervical spine fixator and driver |
US7909869B2 (en) | 2003-08-05 | 2011-03-22 | Flexuspine, Inc. | Artificial spinal unit assemblies |
US7799082B2 (en) | 2003-08-05 | 2010-09-21 | Flexuspine, Inc. | Artificial functional spinal unit system and method for use |
US7753958B2 (en) | 2003-08-05 | 2010-07-13 | Gordon Charles R | Expandable intervertebral implant |
US7635365B2 (en) | 2003-08-28 | 2009-12-22 | Ellis Thomas J | Bone plates |
US20050049595A1 (en) | 2003-09-03 | 2005-03-03 | Suh Sean S. | Track-plate carriage system |
US7909860B2 (en) | 2003-09-03 | 2011-03-22 | Synthes Usa, Llc | Bone plate with captive clips |
US7857839B2 (en) | 2003-09-03 | 2010-12-28 | Synthes Usa, Llc | Bone plate with captive clips |
FR2859376B1 (en) | 2003-09-04 | 2006-05-19 | Spine Next Sa | SPINAL IMPLANT |
US20050059970A1 (en) * | 2003-09-17 | 2005-03-17 | Eric Kolb | Bone fixation systems |
US8372152B2 (en) | 2003-09-30 | 2013-02-12 | X-Spine Systems, Inc. | Spinal fusion system utilizing an implant plate having at least one integral lock and ratchet lock |
US9078706B2 (en) | 2003-09-30 | 2015-07-14 | X-Spine Systems, Inc. | Intervertebral fusion device utilizing multiple mobile uniaxial and bidirectional screw interface plates |
US7182782B2 (en) * | 2003-09-30 | 2007-02-27 | X-Spine Systems, Inc. | Spinal fusion system and method for fusing spinal bones |
US8062367B2 (en) | 2003-09-30 | 2011-11-22 | X-Spine Systems, Inc. | Screw locking mechanism and method |
US8821553B2 (en) | 2003-09-30 | 2014-09-02 | X-Spine Systems, Inc. | Spinal fusion system utilizing an implant plate having at least one integral lock |
US7641701B2 (en) | 2003-09-30 | 2010-01-05 | X-Spine Systems, Inc. | Spinal fusion system and method for fusing spinal bones |
US7306605B2 (en) * | 2003-10-02 | 2007-12-11 | Zimmer Spine, Inc. | Anterior cervical plate |
US7591837B2 (en) * | 2003-10-28 | 2009-09-22 | Pyramid Spine, Llc | Facet triangle spinal fixation device and method of use |
US8182485B1 (en) | 2003-11-21 | 2012-05-22 | Toby Orthopaedics, Llc | Fracture fixation system |
US11419642B2 (en) | 2003-12-16 | 2022-08-23 | Medos International Sarl | Percutaneous access devices and bone anchor assemblies |
US7527638B2 (en) | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US7666188B2 (en) | 2003-12-16 | 2010-02-23 | Depuy Spine, Inc. | Methods and devices for spinal fixation element placement |
US7179261B2 (en) | 2003-12-16 | 2007-02-20 | Depuy Spine, Inc. | Percutaneous access devices and bone anchor assemblies |
US8182518B2 (en) * | 2003-12-22 | 2012-05-22 | Life Spine, Inc. | Static and dynamic cervical plates and cervical plate constructs |
US7635366B2 (en) * | 2003-12-29 | 2009-12-22 | Abdou M Samy | Plating system for bone fixation and method of implantation |
US7678137B2 (en) | 2004-01-13 | 2010-03-16 | Life Spine, Inc. | Pedicle screw constructs for spine fixation systems |
DE602004011178D1 (en) * | 2004-02-04 | 2008-02-21 | Bone & Joint Res S A | Connecting element with elastic head |
US8900277B2 (en) | 2004-02-26 | 2014-12-02 | Pioneer Surgical Technology, Inc. | Bone plate system |
US7311712B2 (en) * | 2004-02-26 | 2007-12-25 | Aesculap Implant Systems, Inc. | Polyaxial locking screw plate assembly |
US7740649B2 (en) | 2004-02-26 | 2010-06-22 | Pioneer Surgical Technology, Inc. | Bone plate system and methods |
AU2004317551B2 (en) | 2004-02-27 | 2008-12-04 | Roger P. Jackson | Orthopedic implant rod reduction tool set and method |
US8152810B2 (en) | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
US9050148B2 (en) * | 2004-02-27 | 2015-06-09 | Roger P. Jackson | Spinal fixation tool attachment structure |
US7160300B2 (en) | 2004-02-27 | 2007-01-09 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US11241261B2 (en) | 2005-09-30 | 2022-02-08 | Roger P Jackson | Apparatus and method for soft spinal stabilization using a tensionable cord and releasable end structure |
US7547318B2 (en) * | 2004-03-19 | 2009-06-16 | Depuy Spine, Inc. | Spinal fixation element and methods |
US20050216027A1 (en) * | 2004-03-24 | 2005-09-29 | Suh Sean S | Extraction screwdriver |
WO2006091827A2 (en) | 2005-02-25 | 2006-08-31 | Regents Of The University Of California | Device and template for canine humeral slide osteotomy |
US20080045960A1 (en) * | 2004-03-25 | 2008-02-21 | Bruecker Kenneth | Locking tpo plate and method of use |
US7942913B2 (en) | 2004-04-08 | 2011-05-17 | Ebi, Llc | Bone fixation device |
US20050228380A1 (en) * | 2004-04-09 | 2005-10-13 | Depuy Spine Inc. | Instruments and methods for minimally invasive spine surgery |
US7789899B2 (en) * | 2004-12-30 | 2010-09-07 | Warsaw Orthopedic, Inc. | Bone anchorage screw with built-in hinged plate |
US7811311B2 (en) * | 2004-12-30 | 2010-10-12 | Warsaw Orthopedic, Inc. | Screw with deployable interlaced dual rods |
US7524323B2 (en) * | 2004-04-16 | 2009-04-28 | Kyphon Sarl | Subcutaneous support |
US7648520B2 (en) * | 2004-04-16 | 2010-01-19 | Kyphon Sarl | Pedicle screw assembly |
US7618418B2 (en) * | 2004-04-16 | 2009-11-17 | Kyphon Sarl | Plate system for minimally invasive support of the spine |
JP4518831B2 (en) * | 2004-04-19 | 2010-08-04 | 瑞穂医科工業株式会社 | Fracture fixation device |
US7744635B2 (en) | 2004-06-09 | 2010-06-29 | Spinal Generations, Llc | Spinal fixation system |
US7938848B2 (en) * | 2004-06-09 | 2011-05-10 | Life Spine, Inc. | Spinal fixation system |
US7731736B2 (en) * | 2004-06-14 | 2010-06-08 | Zimmer Spine, Inc. | Fastening system for spinal stabilization system |
BRPI0512056A (en) * | 2004-06-14 | 2008-02-06 | M S Abdou | Occipital fixation system and method of use |
US7175626B2 (en) * | 2004-06-15 | 2007-02-13 | Board Of Regents Of The University Of Nebraska | Dynamic compression device and driving tool |
US7727266B2 (en) | 2004-06-17 | 2010-06-01 | Warsaw Orthopedic, Inc. | Method and apparatus for retaining screws in a plate |
US7488328B2 (en) * | 2004-07-20 | 2009-02-10 | Yechiel Gotfried | Targeting apparatus for bone fixation device |
JP4429106B2 (en) * | 2004-07-28 | 2010-03-10 | 大日本スクリーン製造株式会社 | Substrate etching equipment |
US7854752B2 (en) | 2004-08-09 | 2010-12-21 | Theken Spine, Llc | System and method for dynamic skeletal stabilization |
US7186255B2 (en) * | 2004-08-12 | 2007-03-06 | Atlas Spine, Inc. | Polyaxial screw |
US20060036250A1 (en) * | 2004-08-12 | 2006-02-16 | Lange Eric C | Antero-lateral plating systems for spinal stabilization |
US7651502B2 (en) | 2004-09-24 | 2010-01-26 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
US9615866B1 (en) | 2004-10-18 | 2017-04-11 | Nuvasive, Inc. | Surgical fixation system and related methods |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
EP1811911A4 (en) | 2004-11-10 | 2012-01-11 | Roger P Jackson | Helical guide and advancement flange with break-off extensions |
US9980753B2 (en) | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
US9216041B2 (en) | 2009-06-15 | 2015-12-22 | Roger P. Jackson | Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts |
US8308782B2 (en) | 2004-11-23 | 2012-11-13 | Jackson Roger P | Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation |
US8444681B2 (en) | 2009-06-15 | 2013-05-21 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert |
US9168069B2 (en) | 2009-06-15 | 2015-10-27 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer |
US7875065B2 (en) | 2004-11-23 | 2011-01-25 | Jackson Roger P | Polyaxial bone screw with multi-part shank retainer and pressure insert |
ATE524121T1 (en) | 2004-11-24 | 2011-09-15 | Abdou Samy | DEVICES FOR PLACING AN ORTHOPEDIC INTERVERTEBRAL IMPLANT |
US7935137B2 (en) * | 2004-12-08 | 2011-05-03 | Depuy Spine, Inc. | Locking bone screw and spinal plate system |
US7931678B2 (en) | 2004-12-08 | 2011-04-26 | Depuy Spine, Inc. | Hybrid spinal plates |
US20060149264A1 (en) * | 2004-12-20 | 2006-07-06 | Castaneda Javier E | Screw locking systems for bone plates |
WO2006069089A2 (en) | 2004-12-21 | 2006-06-29 | Packaging Service Corporation Of Kentucky | Cervical plate system |
US7527640B2 (en) | 2004-12-22 | 2009-05-05 | Ebi, Llc | Bone fixation system |
US8353939B2 (en) * | 2005-01-12 | 2013-01-15 | Warsaw Orthopedic, Inc. | Anchor retaining mechanisms for bone plates |
US20060195089A1 (en) * | 2005-02-03 | 2006-08-31 | Lehuec Jean-Charles | Spinal plating and intervertebral support systems and methods |
AU2006214001B2 (en) | 2005-02-18 | 2011-05-26 | Samy Abdou | Devices and methods for dynamic fixation of skeletal structure |
US10076361B2 (en) | 2005-02-22 | 2018-09-18 | Roger P. Jackson | Polyaxial bone screw with spherical capture, compression and alignment and retention structures |
US7901437B2 (en) | 2007-01-26 | 2011-03-08 | Jackson Roger P | Dynamic stabilization member with molded connection |
US8100955B2 (en) | 2005-03-17 | 2012-01-24 | Spinal Elements, Inc. | Orthopedic expansion fastener |
US7931681B2 (en) * | 2005-04-14 | 2011-04-26 | Warsaw Orthopedic, Inc. | Anti-backout mechanism for an implant fastener |
US7678113B2 (en) * | 2005-04-19 | 2010-03-16 | Warsaw Orthopedic, Inc. | Antero-lateral plating systems and methods for spinal stabilization |
WO2006116606A2 (en) | 2005-04-27 | 2006-11-02 | James Marino | Mono-planar pedilcle screw method, system, and kit |
US7452370B2 (en) * | 2005-04-29 | 2008-11-18 | Warsaw Orthopedic, Inc | Apparatus for retaining a bone anchor in a bone plate and method for use thereof |
US8070749B2 (en) | 2005-05-12 | 2011-12-06 | Stern Joseph D | Revisable anterior cervical plating system |
WO2006124273A2 (en) * | 2005-05-12 | 2006-11-23 | Stern Joseph D | Revisable anterior cervical plating system |
WO2006133086A2 (en) * | 2005-06-03 | 2006-12-14 | Southern Spine, Llc | Surgical stabilization system |
US7288094B2 (en) * | 2005-06-10 | 2007-10-30 | Sdgi Holdings, Inc. | System and method for retaining screws relative to a vertebral plate |
US20060293668A1 (en) * | 2005-06-10 | 2006-12-28 | Sdgi Holdings, Inc. | Bone screw locking mechanism and method of use |
US8273088B2 (en) * | 2005-07-08 | 2012-09-25 | Depuy Spine, Inc. | Bone removal tool |
US8177818B2 (en) * | 2005-09-08 | 2012-05-15 | Securos, Inc. | Fixation plate |
US7955364B2 (en) | 2005-09-21 | 2011-06-07 | Ebi, Llc | Variable angle bone fixation assembly |
US8105368B2 (en) | 2005-09-30 | 2012-01-31 | Jackson Roger P | Dynamic stabilization connecting member with slitted core and outer sleeve |
WO2007041648A2 (en) * | 2005-10-03 | 2007-04-12 | Abdou Samy M | Devices and methods for inter-vertebral orthopedic device placement |
US8870920B2 (en) | 2005-10-07 | 2014-10-28 | M. Samy Abdou | Devices and methods for inter-vertebral orthopedic device placement |
US8002806B2 (en) * | 2005-10-20 | 2011-08-23 | Warsaw Orthopedic, Inc. | Bottom loading multi-axial screw assembly |
US20070093897A1 (en) * | 2005-10-21 | 2007-04-26 | Stryker Spine (In France) | System and method for fusion cage implantation |
CN101296663B (en) * | 2005-10-25 | 2011-05-25 | 圣歌整形外科有限责任公司 | Bone fastening assembly and bushing and screw for use therewith |
WO2007056516A2 (en) * | 2005-11-09 | 2007-05-18 | Abdou M S | Bone fixation systems and methods of implantation |
EP1954216A1 (en) * | 2005-11-16 | 2008-08-13 | Aoi Medical, Inc. | Intervertebral spacer |
US7887595B1 (en) | 2005-12-05 | 2011-02-15 | Nuvasive, Inc. | Methods and apparatus for spinal fusion |
US20070135921A1 (en) * | 2005-12-09 | 2007-06-14 | Park Kee B | Surgical implant |
US9119677B2 (en) | 2005-12-09 | 2015-09-01 | DePuy Synthes Products, Inc. | Spinal plate and drill guide |
US7704271B2 (en) | 2005-12-19 | 2010-04-27 | Abdou M Samy | Devices and methods for inter-vertebral orthopedic device placement |
US8100952B2 (en) * | 2005-12-22 | 2012-01-24 | Anthem Orthopaedics Llc | Drug delivering bone plate and method and targeting device for use therewith |
WO2007081986A2 (en) | 2006-01-10 | 2007-07-19 | Life Spine, Inc. | Pedicle screw constructs and spinal rod attachment assemblies |
AU2007217769A1 (en) * | 2006-02-21 | 2007-08-30 | Life Spine, Inc. | Structure for joining and retaining multi-part orthopedic implants |
WO2007098288A2 (en) | 2006-02-27 | 2007-08-30 | Synthes (U.S.A.) | Intervertebral implant with fixation geometry |
US8147530B2 (en) * | 2006-03-07 | 2012-04-03 | Orthohelix Surgical Designs, Inc. | Variable axis locking mechanism for use in orthopedic implants |
US8118869B2 (en) | 2006-03-08 | 2012-02-21 | Flexuspine, Inc. | Dynamic interbody device |
SE531987C2 (en) * | 2006-03-17 | 2009-09-22 | Sven Olerud | Device for attaching and fixing a first element to a second element |
WO2007109316A2 (en) * | 2006-03-21 | 2007-09-27 | Alphaspine, Inc. | Cervical pop rivet locking mechanism |
US8025681B2 (en) | 2006-03-29 | 2011-09-27 | Theken Spine, Llc | Dynamic motion spinal stabilization system |
US7951178B2 (en) * | 2006-04-03 | 2011-05-31 | Acumed Llc | Bone plates with hybrid apertures |
US20070270859A1 (en) * | 2006-04-28 | 2007-11-22 | Sdgi Holdings, Inc. | Orthopedic screw with break away drive |
US8048120B1 (en) * | 2006-05-31 | 2011-11-01 | Medicine Lodge, Inc. | System and method for segmentally modular spinal plating |
US8303601B2 (en) | 2006-06-07 | 2012-11-06 | Stryker Spine | Collet-activated distraction wedge inserter |
US8021369B2 (en) * | 2006-06-12 | 2011-09-20 | Howmedica Osteonics Corp. | Navigated femoral neck resection guide and method |
US20080097442A1 (en) * | 2006-06-29 | 2008-04-24 | Dixon Robert A | Method and device for improving the function of taper locks used for spinal stabilization |
DE602006007338D1 (en) * | 2006-07-14 | 2009-07-30 | Stryker Trauma Gmbh | Medical device and kit for handling an implant |
WO2008013960A2 (en) | 2006-07-27 | 2008-01-31 | Abdou Samy M | Devices and methods for the minimally invasive treatment of spinal stenosis |
US7831473B2 (en) * | 2006-07-29 | 2010-11-09 | At&T Intellectual Property I, L.P. | Methods, systems, and products for crediting accounts |
US8029514B2 (en) * | 2006-08-04 | 2011-10-04 | Robinson James C | Bone screw removal system |
US8114162B1 (en) | 2006-08-09 | 2012-02-14 | Nuvasive, Inc. | Spinal fusion implant and related methods |
WO2008024373A2 (en) | 2006-08-21 | 2008-02-28 | Abdou M Samy | Bone screw systems and methods of use |
USD708747S1 (en) | 2006-09-25 | 2014-07-08 | Nuvasive, Inc. | Spinal fusion implant |
US7918857B2 (en) | 2006-09-26 | 2011-04-05 | Depuy Spine, Inc. | Minimally invasive bone anchor extensions |
US8361130B2 (en) * | 2006-10-06 | 2013-01-29 | Depuy Spine, Inc. | Bone screw fixation |
US8262710B2 (en) | 2006-10-24 | 2012-09-11 | Aesculap Implant Systems, Llc | Dynamic stabilization device for anterior lower lumbar vertebral fusion |
US20080119856A1 (en) * | 2006-11-20 | 2008-05-22 | Yechiel Gotfried | Intramedullary nail system and method for fixation of a fractured bone |
FR2908627B1 (en) * | 2006-11-20 | 2009-07-03 | Tornier Sas | PROTHETIC OR OSTEOSYNTHESIS DEVICE WITH A SLICED OLIVE |
DE602006019616D1 (en) * | 2006-11-22 | 2011-02-24 | Biedermann Motech Gmbh | Bone anchoring device |
US8911483B2 (en) * | 2006-12-08 | 2014-12-16 | Nexus Spine, L.L.C. | Compliant cervical screw locking mechanism |
CA2670988C (en) | 2006-12-08 | 2014-03-25 | Roger P. Jackson | Tool system for dynamic spinal implants |
US20080208259A1 (en) * | 2006-12-19 | 2008-08-28 | Small Bone Innovations, Inc. | Locking fixation system and lag tool |
CA2675037A1 (en) * | 2007-01-10 | 2008-07-17 | Facet Solutions, Inc. | Taper-locking fixation system |
US8475498B2 (en) | 2007-01-18 | 2013-07-02 | Roger P. Jackson | Dynamic stabilization connecting member with cord connection |
US8366745B2 (en) | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
US8597358B2 (en) | 2007-01-19 | 2013-12-03 | Flexuspine, Inc. | Dynamic interbody devices |
US8142432B2 (en) * | 2007-02-05 | 2012-03-27 | Synthes Usa, Llc | Apparatus for repositioning portions of fractured bone and method of using same |
US7763023B2 (en) * | 2007-02-09 | 2010-07-27 | Yechiel Gotfried | Intramedullary nail system and method for fixation of a fractured bone |
US8012177B2 (en) | 2007-02-12 | 2011-09-06 | Jackson Roger P | Dynamic stabilization assembly with frusto-conical connection |
US20080195099A1 (en) * | 2007-02-13 | 2008-08-14 | The Brigham And Women's Hospital, Inc. | Osteotomy system |
US20080221681A1 (en) * | 2007-03-09 | 2008-09-11 | Warsaw Orthopedic, Inc. | Methods for Improving Fatigue Performance of Implants With Osteointegrating Coatings |
US20080221688A1 (en) * | 2007-03-09 | 2008-09-11 | Warsaw Orthopedic, Inc. | Method of Maintaining Fatigue Performance In A Bone-Engaging Implant |
WO2008118295A2 (en) * | 2007-03-26 | 2008-10-02 | Laszlo Garamszegi | Bottom-loading pedicle screw assembly |
US20080249569A1 (en) * | 2007-04-03 | 2008-10-09 | Warsaw Orthopedic, Inc. | Implant Face Plates |
US8268000B2 (en) * | 2007-04-03 | 2012-09-18 | Warsaw Orthopedic, Inc. | Composite interbody spacer |
US8425607B2 (en) * | 2007-04-03 | 2013-04-23 | Warsaw Orthopedic, Inc. | Anchor member locking features |
US10383660B2 (en) | 2007-05-01 | 2019-08-20 | Roger P. Jackson | Soft stabilization assemblies with pretensioned cords |
US8197517B1 (en) | 2007-05-08 | 2012-06-12 | Theken Spine, Llc | Frictional polyaxial screw assembly |
US8197518B2 (en) | 2007-05-16 | 2012-06-12 | Ortho Innovations, Llc | Thread-thru polyaxial pedicle screw system |
US7947065B2 (en) | 2008-11-14 | 2011-05-24 | Ortho Innovations, Llc | Locking polyaxial ball and socket fastener |
US7951173B2 (en) | 2007-05-16 | 2011-05-31 | Ortho Innovations, Llc | Pedicle screw implant system |
US7942910B2 (en) | 2007-05-16 | 2011-05-17 | Ortho Innovations, Llc | Polyaxial bone screw |
US7942911B2 (en) | 2007-05-16 | 2011-05-17 | Ortho Innovations, Llc | Polyaxial bone screw |
US7942909B2 (en) | 2009-08-13 | 2011-05-17 | Ortho Innovations, Llc | Thread-thru polyaxial pedicle screw system |
US9545275B2 (en) | 2007-05-18 | 2017-01-17 | Us Spine, Inc. | Medical device locking mechanisms and related methods and systems |
US8721693B2 (en) * | 2007-05-18 | 2014-05-13 | Us Spine, Inc. | Cervical plate locking mechanism and associated surgical method |
US8840650B2 (en) * | 2007-05-18 | 2014-09-23 | Us Spine, Inc. | Cervical plate locking mechanism and associated surgical method |
US8216312B2 (en) * | 2007-05-31 | 2012-07-10 | Zimmer Spine, Inc. | Spinal interbody system and method |
CA2690038C (en) | 2007-05-31 | 2012-11-27 | Roger P. Jackson | Dynamic stabilization connecting member with pre-tensioned solid core |
US9072548B2 (en) | 2007-06-07 | 2015-07-07 | Anthem Orthopaedics Llc | Spine repair assembly |
US8361126B2 (en) | 2007-07-03 | 2013-01-29 | Pioneer Surgical Technology, Inc. | Bone plate system |
US8623019B2 (en) | 2007-07-03 | 2014-01-07 | Pioneer Surgical Technology, Inc. | Bone plate system |
US7963982B2 (en) * | 2007-07-16 | 2011-06-21 | X-Spine Systems, Inc. | Implant plate screw locking system and screw having a locking member |
US8556944B2 (en) * | 2007-07-31 | 2013-10-15 | Stryker Spine | System and method for vertebral body plating |
US7717916B2 (en) * | 2007-08-16 | 2010-05-18 | Nutek Orthopaedics, Inc. | External fixation apparatus with adjustable pin clamping means |
KR20100074151A (en) | 2007-08-20 | 2010-07-01 | 너바시브 인코퍼레이티드 | Surgical fixation system and related methods |
US8388663B2 (en) | 2007-09-13 | 2013-03-05 | Stryker Spine | Dynamic cervical plate |
EP2036515B2 (en) * | 2007-09-17 | 2021-12-08 | Straumann Holding AG | Connecting assembly between a dental implant and an abutment |
US8613761B2 (en) | 2007-09-28 | 2013-12-24 | Warsaw Orthopedic, Inc. | Surgical implant with an anti-backout feature |
US8414588B2 (en) | 2007-10-04 | 2013-04-09 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal connection element delivery |
US8496693B2 (en) * | 2007-10-16 | 2013-07-30 | Amendia Inc. | Bone screw retaining and removal system |
US8523912B2 (en) | 2007-10-22 | 2013-09-03 | Flexuspine, Inc. | Posterior stabilization systems with shared, dual dampener systems |
US8187330B2 (en) * | 2007-10-22 | 2012-05-29 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a variable length elongated member |
US8267965B2 (en) | 2007-10-22 | 2012-09-18 | Flexuspine, Inc. | Spinal stabilization systems with dynamic interbody devices |
US8182514B2 (en) | 2007-10-22 | 2012-05-22 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a fixed length elongated member |
US8162994B2 (en) | 2007-10-22 | 2012-04-24 | Flexuspine, Inc. | Posterior stabilization system with isolated, dual dampener systems |
US8157844B2 (en) | 2007-10-22 | 2012-04-17 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a variable length elongated member |
US8911477B2 (en) | 2007-10-23 | 2014-12-16 | Roger P. Jackson | Dynamic stabilization member with end plate support and cable core extension |
US8403971B2 (en) * | 2007-10-23 | 2013-03-26 | K2M, Inc. | Polyaxial screw assembly |
BRPI0820172A2 (en) | 2007-11-16 | 2015-06-16 | Synthes Gmbh | Low Profile Intervertebral Implant |
US9445842B2 (en) * | 2008-01-24 | 2016-09-20 | Globus Medical, Inc. | Facet fixation prosthesis |
US8282675B2 (en) | 2008-01-25 | 2012-10-09 | Depuy Spine, Inc. | Anti-backout mechanism |
US20090192549A1 (en) * | 2008-01-30 | 2009-07-30 | Ebi, Llc | Bone plating system |
US9345517B2 (en) | 2008-02-02 | 2016-05-24 | Globus Medical, Inc. | Pedicle screw having a removable rod coupling |
US20090210008A1 (en) * | 2008-02-20 | 2009-08-20 | Life Spine, Inc. | Modular spine plate with projection and socket interface |
US20090248087A1 (en) * | 2008-03-03 | 2009-10-01 | Orthohelix Surgical Designs, Inc. | Variable axis locking mechanism for use in orthopedic implants |
AU2009223517B2 (en) | 2008-03-10 | 2015-02-12 | Eduardo Gonzalez-Hernandez | Bone fixation system |
AU2008354730A1 (en) | 2008-04-17 | 2009-10-22 | Toby Orthopaedics, Inc. | Soft tissue attachment system and clip |
US8257407B2 (en) * | 2008-04-23 | 2012-09-04 | Aryan Henry E | Bone plate system and method |
US8480716B2 (en) * | 2008-04-25 | 2013-07-09 | Pioneer Surgical Technology, Inc. | Bone plate system |
US8123785B2 (en) * | 2008-05-08 | 2012-02-28 | Aesculap Implant Systems, Llc | Minimally invasive spinal stabilization system |
EP2135574B1 (en) * | 2008-06-19 | 2011-10-12 | BIEDERMANN MOTECH GmbH | Bone anchoring assembly |
US8337533B2 (en) * | 2008-06-20 | 2012-12-25 | Osteomed Llc | Locking plate benders |
US8425514B2 (en) | 2008-06-25 | 2013-04-23 | Westmark Medical, Llc. | Spinal fixation device |
GB0813659D0 (en) | 2008-07-25 | 2008-09-03 | Smith & Nephew | Fracture putty |
JP2012529969A (en) | 2008-08-01 | 2012-11-29 | ロジャー・ピー・ジャクソン | Longitudinal connecting member with tensioning cord with sleeve |
EP2346422A1 (en) * | 2008-08-08 | 2011-07-27 | Alphatec Spine, Inc. | Spinous process device and method of use |
US8298272B2 (en) * | 2008-08-12 | 2012-10-30 | Warsaw Orthopedic Inc. | Self-locking surgical fastener |
US8348949B2 (en) * | 2008-08-29 | 2013-01-08 | Life Spine, Inc. | Single-sided dynamic spine plates |
US8585743B2 (en) * | 2008-09-15 | 2013-11-19 | Biomet C.V. | Low profile screw and washer system for bone plating |
CN102177387B (en) * | 2008-10-09 | 2013-07-10 | Spherofix有限公司 | A device and a method for anchoring a beam or a bar against an element |
US8328856B1 (en) | 2008-10-14 | 2012-12-11 | Nuvasive, Inc. | Surgical fixation system and related methods |
BRPI0921486A2 (en) | 2008-11-07 | 2019-09-10 | Synthes Gmbh | vertebral intercorporeal unit of spacer and coupled plate |
US8808292B2 (en) * | 2008-11-11 | 2014-08-19 | Zimmer Gmbh | Orthopedic screw |
US8075603B2 (en) | 2008-11-14 | 2011-12-13 | Ortho Innovations, Llc | Locking polyaxial ball and socket fastener |
WO2010065666A1 (en) * | 2008-12-02 | 2010-06-10 | Eminent Spine Llc | Bone plate and plating system for use of same |
US20100198271A1 (en) * | 2009-02-02 | 2010-08-05 | Vincent Leone | Screw Sheath for Minimally Invasive Spinal Surgery and Method Relating Thereto |
JP5548710B2 (en) | 2009-03-13 | 2014-07-16 | スパイナル シンプリシティ エルエルシー | Dynamic spine plate system |
US8574270B2 (en) | 2009-03-13 | 2013-11-05 | Spinal Simplicity Llc | Bone plate assembly with bone screw retention features |
US9220547B2 (en) | 2009-03-27 | 2015-12-29 | Spinal Elements, Inc. | Flanged interbody fusion device |
ES2547500T3 (en) | 2009-04-03 | 2015-10-06 | Stryker Trauma Gmbh | Sonic screw |
FR2944692B1 (en) * | 2009-04-27 | 2011-04-15 | Medicrea International | MATERIAL OF VERTEBRAL OSTEOSYNTHESIS |
US11229457B2 (en) | 2009-06-15 | 2022-01-25 | Roger P. Jackson | Pivotal bone anchor assembly with insert tool deployment |
EP2757988A4 (en) | 2009-06-15 | 2015-08-19 | Jackson Roger P | Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet |
US8998959B2 (en) | 2009-06-15 | 2015-04-07 | Roger P Jackson | Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert |
US9668771B2 (en) | 2009-06-15 | 2017-06-06 | Roger P Jackson | Soft stabilization assemblies with off-set connector |
CN103917181A (en) | 2009-06-15 | 2014-07-09 | 罗杰.P.杰克逊 | Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock |
US9259255B2 (en) * | 2009-07-15 | 2016-02-16 | Orthohelix Surgical Designs, Inc. | Variable axis locking mechanism for use in orthopedic implants |
US9095444B2 (en) | 2009-07-24 | 2015-08-04 | Warsaw Orthopedic, Inc. | Implant with an interference fit fastener |
MX2012000992A (en) | 2009-07-24 | 2012-06-27 | Spinal USA LLC | Bone plate system and methods of using the same. |
CA2768960C (en) | 2009-07-24 | 2016-12-13 | Spinal USA LLC | Bone plate screw-blocking systems and methods |
US8591555B2 (en) * | 2009-08-31 | 2013-11-26 | Warsaw Orthopedic, Inc. | System with integral locking mechanism |
FR2949317B1 (en) * | 2009-09-02 | 2012-04-13 | Creaspine | IMPLANT ASSEMBLY FOR BONE FASTENING, PLATE AND SCREW TYPE |
US8496692B2 (en) | 2009-09-21 | 2013-07-30 | Jmea Corporation | Locking securing member |
US20110082506A1 (en) * | 2009-10-02 | 2011-04-07 | Spinefrontier, Inc | Cervical plate assembly |
WO2011043805A1 (en) | 2009-10-05 | 2011-04-14 | Roger Jackson P | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
USD734853S1 (en) | 2009-10-14 | 2015-07-21 | Nuvasive, Inc. | Bone plate |
US20110106157A1 (en) * | 2009-10-30 | 2011-05-05 | Warsaw Orthropedic, Inc. | Self-Locking Interference Bone Screw for use with Spinal Implant |
US8764806B2 (en) | 2009-12-07 | 2014-07-01 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US8568417B2 (en) | 2009-12-18 | 2013-10-29 | Charles River Engineering Solutions And Technologies, Llc | Articulating tool and methods of using |
US8486116B2 (en) | 2010-01-08 | 2013-07-16 | Biomet Manufacturing Ring Corporation | Variable angle locking screw |
US8425576B2 (en) | 2010-01-26 | 2013-04-23 | Westmark Medical, Llc. | Bone screw retention mechanism |
US9113970B2 (en) | 2010-03-10 | 2015-08-25 | Orthohelix Surgical Designs, Inc. | System for achieving selectable fixation in an orthopedic plate |
US8758347B2 (en) * | 2010-03-19 | 2014-06-24 | Nextremity Solutions, Inc. | Dynamic bone plate |
US8858603B1 (en) | 2010-06-09 | 2014-10-14 | Choice Spine, L.P. | Cervical plate with screw retention clip |
US20110313466A1 (en) * | 2010-06-17 | 2011-12-22 | Butler Michael S | Spinal Facet Bone Screw System |
US8777999B2 (en) | 2010-07-08 | 2014-07-15 | Matthew N. Songer | Variable angle locking plate system |
US10603083B1 (en) | 2010-07-09 | 2020-03-31 | Theken Spine, Llc | Apparatus and method for limiting a range of angular positions of a screw |
US9084634B1 (en) | 2010-07-09 | 2015-07-21 | Theken Spine, Llc | Uniplanar screw |
WO2012030712A1 (en) | 2010-08-30 | 2012-03-08 | Zimmer Spine, Inc. | Polyaxial pedicle screw |
EP2613719A1 (en) | 2010-09-08 | 2013-07-17 | Roger P. Jackson | Dynamic stabilization members with elastic and inelastic sections |
US8753396B1 (en) | 2010-09-13 | 2014-06-17 | Theken Spine, Llc | Intervertebral implant having back-out prevention feature |
US8961573B2 (en) | 2010-10-05 | 2015-02-24 | Toby Orthopaedics, Inc. | System and method for facilitating repair and reattachment of comminuted bone portions |
US8562656B2 (en) | 2010-10-15 | 2013-10-22 | Warsaw Orrthopedic, Inc. | Retaining mechanism |
US9510867B2 (en) * | 2010-10-15 | 2016-12-06 | Phygen, Llc | Fixation screw assembly |
WO2012058448A2 (en) | 2010-10-27 | 2012-05-03 | Toby Orthopaedics, Llc | System and method for fracture replacement of comminuted bone fractures or portions thereof adjacent bone joints |
DE112011103644T5 (en) | 2010-11-02 | 2013-12-24 | Roger P. Jackson | Polyaxial bone anchor with quick-release shaft and rotatable holder |
EP2460484A1 (en) * | 2010-12-01 | 2012-06-06 | FACET-LINK Inc. | Variable angle bone screw fixation assembly |
US9241809B2 (en) | 2010-12-21 | 2016-01-26 | DePuy Synthes Products, Inc. | Intervertebral implants, systems, and methods of use |
WO2012088238A2 (en) | 2010-12-21 | 2012-06-28 | Synthes Usa, Llc | Intervertebral implants, systems, and methods of use |
US8728129B2 (en) | 2011-01-07 | 2014-05-20 | Biomet Manufacturing, Llc | Variable angled locking screw |
US8940030B1 (en) | 2011-01-28 | 2015-01-27 | Nuvasive, Inc. | Spinal fixation system and related methods |
EP2670327B1 (en) | 2011-02-01 | 2016-09-21 | Nextremity Solutions, Inc. | Bone defect repair device |
US20120215232A1 (en) * | 2011-02-18 | 2012-08-23 | Olsen Russell G | Surgical fastener and associated systems and methods |
US9254154B2 (en) | 2011-03-03 | 2016-02-09 | Toby Orthopaedic, Inc. | Anterior lesser tuberosity fixed angle fixation device and method of use associated therewith |
WO2012128825A1 (en) | 2011-03-24 | 2012-09-27 | Jackson Roger P | Polyaxial bone anchor with compound articulation and pop-on shank |
US8388687B2 (en) | 2011-03-25 | 2013-03-05 | Flexuspine, Inc. | Interbody device insertion systems and methods |
JP6063442B2 (en) | 2011-04-01 | 2017-01-18 | シンセス・ゲーエムベーハーSynthes GmbH | Posterior vertebra plating system |
US9017412B2 (en) | 2011-04-29 | 2015-04-28 | Life Spine, Inc. | Spinal interbody implant with bone screw retention |
US8771324B2 (en) | 2011-05-27 | 2014-07-08 | Globus Medical, Inc. | Securing fasteners |
US8668723B2 (en) * | 2011-07-19 | 2014-03-11 | Neurostructures, Inc. | Anterior cervical plate |
US8845728B1 (en) | 2011-09-23 | 2014-09-30 | Samy Abdou | Spinal fixation devices and methods of use |
GB2558433B (en) | 2011-09-30 | 2018-12-12 | Acute Innovations Llc | Bone fixation system with opposed mounting portions |
US9271772B2 (en) | 2011-10-27 | 2016-03-01 | Toby Orthopaedics, Inc. | System and method for fracture replacement of comminuted bone fractures or portions thereof adjacent bone joints |
US9730797B2 (en) | 2011-10-27 | 2017-08-15 | Toby Orthopaedics, Inc. | Bone joint replacement and repair assembly and method of repairing and replacing a bone joint |
US11123117B1 (en) * | 2011-11-01 | 2021-09-21 | Nuvasive, Inc. | Surgical fixation system and related methods |
US9402667B2 (en) | 2011-11-09 | 2016-08-02 | Eduardo Gonzalez-Hernandez | Apparatus and method for use of the apparatus for fracture fixation of the distal humerus |
US9526627B2 (en) | 2011-11-17 | 2016-12-27 | Exactech, Inc. | Expandable interbody device system and method |
US9241807B2 (en) | 2011-12-23 | 2016-01-26 | Pioneer Surgical Technology, Inc. | Systems and methods for inserting a spinal device |
US9265543B2 (en) | 2011-12-27 | 2016-02-23 | Pioneer Surgical Technology, Inc. | Bone plate system and method |
US8911479B2 (en) | 2012-01-10 | 2014-12-16 | Roger P. Jackson | Multi-start closures for open implants |
US9254149B2 (en) | 2012-01-18 | 2016-02-09 | Neurosurj Research and Development, LLC | Spinal fixation method and apparatus |
WO2013113015A1 (en) | 2012-01-26 | 2013-08-01 | Acute Innovations Llc | Clip for rib stabilization |
US20130226240A1 (en) | 2012-02-22 | 2013-08-29 | Samy Abdou | Spinous process fixation devices and methods of use |
US8974504B2 (en) | 2012-05-10 | 2015-03-10 | Spinal Simplicity Llc | Dynamic bone fracture plates |
US9198767B2 (en) | 2012-08-28 | 2015-12-01 | Samy Abdou | Devices and methods for spinal stabilization and instrumentation |
US9320617B2 (en) | 2012-10-22 | 2016-04-26 | Cogent Spine, LLC | Devices and methods for spinal stabilization and instrumentation |
GB2518545B (en) * | 2012-11-14 | 2015-10-07 | Harold M Wotton Iii | Bone anchor |
US8911478B2 (en) | 2012-11-21 | 2014-12-16 | Roger P. Jackson | Splay control closure for open bone anchor |
US10765465B2 (en) | 2012-11-21 | 2020-09-08 | A&E Advanced Closure Systems, Llc | Tensioning instrument |
US9561064B2 (en) * | 2012-11-21 | 2017-02-07 | Pioneer Surgical Technology, Inc. | Bone plate system and method |
US9283008B2 (en) | 2012-12-17 | 2016-03-15 | Toby Orthopaedics, Inc. | Bone plate for plate osteosynthesis and method for use thereof |
US10076369B2 (en) | 2013-01-16 | 2018-09-18 | Spinefrontier, Inc | Bone fastener for a spinal fixation assembly |
US10058354B2 (en) | 2013-01-28 | 2018-08-28 | Roger P. Jackson | Pivotal bone anchor assembly with frictional shank head seating surfaces |
US9579133B2 (en) | 2013-02-01 | 2017-02-28 | James Guthlein | Internal fixation device |
US8852239B2 (en) | 2013-02-15 | 2014-10-07 | Roger P Jackson | Sagittal angle screw with integral shank and receiver |
US9492288B2 (en) | 2013-02-20 | 2016-11-15 | Flexuspine, Inc. | Expandable fusion device for positioning between adjacent vertebral bodies |
WO2014134328A1 (en) * | 2013-02-27 | 2014-09-04 | Coorstek Medical Llc D/B/A Imds | Graft fixation |
US9333014B2 (en) | 2013-03-15 | 2016-05-10 | Eduardo Gonzalez-Hernandez | Bone fixation and reduction apparatus and method for fixation and reduction of a distal bone fracture and malunion |
EP2789303A1 (en) * | 2013-04-12 | 2014-10-15 | Zimmer GmbH | Implantable insert sleeve |
US9453526B2 (en) | 2013-04-30 | 2016-09-27 | Degen Medical, Inc. | Bottom-loading anchor assembly |
US9943341B2 (en) | 2013-07-16 | 2018-04-17 | K2M, Llc | Retention plate member for a spinal plate system |
US9468479B2 (en) | 2013-09-06 | 2016-10-18 | Cardinal Health 247, Inc. | Bone plate |
CN103536346A (en) * | 2013-10-18 | 2014-01-29 | 江苏艾迪尔医疗科技股份有限公司 | Manufacturing method of orthopaedic fixing device |
US9566092B2 (en) | 2013-10-29 | 2017-02-14 | Roger P. Jackson | Cervical bone anchor with collet retainer and outer locking sleeve |
US9999454B2 (en) | 2013-12-05 | 2018-06-19 | A&E Advanced Closure Systems, Llc | Bone plate system and method |
US9717533B2 (en) | 2013-12-12 | 2017-08-01 | Roger P. Jackson | Bone anchor closure pivot-splay control flange form guide and advancement structure |
US9451993B2 (en) | 2014-01-09 | 2016-09-27 | Roger P. Jackson | Bi-radial pop-on cervical bone anchor |
US9629664B2 (en) | 2014-01-20 | 2017-04-25 | Neurostructures, Inc. | Anterior cervical plate |
US9889014B2 (en) | 2014-02-06 | 2018-02-13 | Life Spine, Inc. | Implant for bone fixation |
US9877759B2 (en) | 2014-02-06 | 2018-01-30 | Life Spine, Inc. | Foot implant for bone fixation |
US9486250B2 (en) | 2014-02-20 | 2016-11-08 | Mastros Innovations, LLC. | Lateral plate |
US9055983B1 (en) * | 2014-04-24 | 2015-06-16 | Amendia, Inc. | Self-locking bone screw receiver |
US10398565B2 (en) | 2014-04-24 | 2019-09-03 | Choice Spine, Llc | Limited profile intervertebral implant with incorporated fastening and locking mechanism |
US9517144B2 (en) | 2014-04-24 | 2016-12-13 | Exactech, Inc. | Limited profile intervertebral implant with incorporated fastening mechanism |
US10314635B2 (en) | 2014-05-28 | 2019-06-11 | A&E Advanced Closure Systems, Llc | Tensioning instruments |
US9597119B2 (en) | 2014-06-04 | 2017-03-21 | Roger P. Jackson | Polyaxial bone anchor with polymer sleeve |
US10064658B2 (en) | 2014-06-04 | 2018-09-04 | Roger P. Jackson | Polyaxial bone anchor with insert guides |
EP3164093B1 (en) | 2014-07-03 | 2024-02-14 | Acumed LLC | Bone plate with movable joint |
MX2017003471A (en) * | 2014-09-19 | 2017-08-02 | In Queue Innovations Llc | Fusion systems and methods of assembly and use. |
EP3193755B1 (en) | 2014-09-19 | 2022-02-09 | In Queue Innovations, LLC | Fusion systems of assembly and use |
US10213237B2 (en) | 2014-10-03 | 2019-02-26 | Stryker European Holdings I, Llc | Periprosthetic extension plate |
US20160095639A1 (en) * | 2014-10-05 | 2016-04-07 | Nexxt Spine, LLC | Washer assembly for spinal fixation screw |
US9867718B2 (en) | 2014-10-22 | 2018-01-16 | DePuy Synthes Products, Inc. | Intervertebral implants, systems, and methods of use |
KR101639887B1 (en) * | 2014-11-11 | 2016-07-14 | 경북대학교 산학협력단 | A system for fixing cervical vertebrae and a driver used for an appratus for fixing cervical vertebrae |
EP3250155A4 (en) | 2015-01-27 | 2018-08-22 | Spinal Elements Inc. | Facet joint implant |
US11311323B2 (en) | 2015-02-06 | 2022-04-26 | In2Bones Usa, Llc | Bone plate with insert(s) for optimally directing fasteners |
WO2016137983A1 (en) | 2015-02-24 | 2016-09-01 | X-Spine Systems, Inc. | Modular interspinous fixation system with threaded component |
KR101670768B1 (en) | 2015-07-16 | 2016-10-31 | 경북대학교 산학협력단 | Screw anchor assembly |
US10874445B2 (en) | 2015-10-13 | 2020-12-29 | Kyungpook National University Industry-Academic Cooperation Foundation | Screw fixing apparatus |
US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
KR101712610B1 (en) | 2015-12-29 | 2017-03-06 | 경북대학교 산학협력단 | A rod connecter |
AU2017210022B2 (en) | 2016-01-22 | 2021-05-13 | A&E Advanced Closure Systems, Llc | Bone plate having a connector and a connector for a surgical loop |
US10251685B2 (en) | 2016-03-17 | 2019-04-09 | Stryker European Holdings I, Llc | Floating locking insert |
US10531905B2 (en) | 2016-04-19 | 2020-01-14 | Globus Medical, Inc. | Implantable compression screws |
KR101791004B1 (en) | 2016-06-08 | 2017-10-27 | 경북대학교 산학협력단 | Screw anchor assembly and a method for using the same to pedicle screw instrumentation |
WO2018022283A1 (en) | 2016-07-29 | 2018-02-01 | Pioneer Surgical Technology, Inc. | Surgical cable tensioner |
US10973648B1 (en) | 2016-10-25 | 2021-04-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10744000B1 (en) | 2016-10-25 | 2020-08-18 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10512547B2 (en) | 2017-05-04 | 2019-12-24 | Neurostructures, Inc. | Interbody spacer |
US10980641B2 (en) | 2017-05-04 | 2021-04-20 | Neurostructures, Inc. | Interbody spacer |
US10507043B1 (en) | 2017-10-11 | 2019-12-17 | Seaspine Orthopedics Corporation | Collet for a polyaxial screw assembly |
EP3533403B1 (en) | 2018-03-02 | 2022-08-17 | Stryker European Holdings I, LLC | Bone plates and associated screws |
US11076892B2 (en) | 2018-08-03 | 2021-08-03 | Neurostructures, Inc. | Anterior cervical plate |
BR112021005206A2 (en) | 2018-09-20 | 2021-06-08 | Spinal Elements, Inc. | spinal implant device |
US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
US11071629B2 (en) | 2018-10-13 | 2021-07-27 | Neurostructures Inc. | Interbody spacer |
US11298244B2 (en) | 2019-01-31 | 2022-04-12 | K2M, Inc. | Interbody implants and instrumentation |
US11389209B2 (en) | 2019-07-19 | 2022-07-19 | Medos International Sarl | Surgical plating systems, devices, and related methods |
US11534307B2 (en) | 2019-09-16 | 2022-12-27 | K2M, Inc. | 3D printed cervical standalone implant |
WO2021127251A1 (en) * | 2019-12-17 | 2021-06-24 | Jackson Roger P | Bone anchor assembly with closed ring retainer and internal snap ring |
US11877779B2 (en) | 2020-03-26 | 2024-01-23 | Xtant Medical Holdings, Inc. | Bone plate system |
US11382761B2 (en) | 2020-04-11 | 2022-07-12 | Neurostructures, Inc. | Expandable interbody spacer |
US11957393B2 (en) | 2020-05-12 | 2024-04-16 | Globus Medical, Inc. | Locking variable length compression screw |
US11304817B2 (en) | 2020-06-05 | 2022-04-19 | Neurostructures, Inc. | Expandable interbody spacer |
US11911284B2 (en) | 2020-11-19 | 2024-02-27 | Spinal Elements, Inc. | Curved expandable interbody devices and deployment tools |
US11717419B2 (en) | 2020-12-10 | 2023-08-08 | Neurostructures, Inc. | Expandable interbody spacer |
Family Cites Families (256)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4059297A (en) * | 1976-03-08 | 1977-11-22 | Parker-Hannifin Corporation | Tube coupling |
US4492226A (en) * | 1979-10-10 | 1985-01-08 | Vsesojuzny Nauchno-Issledovatelsky I Ispytatelny Institut Meditsinskoi Tekhniki | Device for uniting bone fragments |
CH645264A5 (en) * | 1980-05-28 | 1984-09-28 | Straumann Inst Ag | FITTING WITH A PLATE AND SCREWS THAT FIX IT TO A BONE. |
GB2083754B (en) * | 1980-09-15 | 1984-04-26 | Rezaian Seyed Mahmoud | Spinal fixator |
DE3114136C2 (en) * | 1981-04-08 | 1986-02-06 | Aesculap-Werke Ag Vormals Jetter & Scheerer, 7200 Tuttlingen | Osteosynthesis plate |
DE3121272A1 (en) * | 1981-05-29 | 1982-12-23 | Ulrich, Max Bernhard, 7900 Ulm | CORRECTIONAL IMPLANT FOR LUMBOSACRAL SPONDYLODESIS |
US4501269A (en) * | 1981-12-11 | 1985-02-26 | Washington State University Research Foundation, Inc. | Process for fusing bone joints |
FR2545350B1 (en) * | 1983-05-04 | 1985-08-23 | Cotrel Yves | DEVICE FOR SHRINKAGE OF THE RACHIS |
US4570618A (en) * | 1983-11-23 | 1986-02-18 | Henry Ford Hospital | Intervertebral body wire stabilization |
GB2173104B (en) * | 1984-02-28 | 1987-11-25 | Peter John Webb | Spinal fixation apparatus |
US4604995A (en) * | 1984-03-30 | 1986-08-12 | Stephens David C | Spinal stabilizer |
US4643178A (en) * | 1984-04-23 | 1987-02-17 | Fabco Medical Products, Inc. | Surgical wire and method for the use thereof |
US4743256A (en) * | 1985-10-04 | 1988-05-10 | Brantigan John W | Surgical prosthetic implant facilitating vertebral interbody fusion and method |
DE3614101C1 (en) * | 1986-04-25 | 1987-10-22 | Juergen Prof Dr Med Harms | Pedicle screw |
SU1424826A1 (en) | 1986-05-22 | 1988-09-23 | Белорусский научно-исследовательский институт травматологии и ортопедии | Fixative for spinal column |
CH672058A5 (en) * | 1986-08-05 | 1989-10-31 | Synthes Ag | |
GB8620937D0 (en) | 1986-08-29 | 1986-10-08 | Shepperd J A N | Spinal implant |
US4805602A (en) * | 1986-11-03 | 1989-02-21 | Danninger Medical Technology | Transpedicular screw and rod system |
EP0293411A1 (en) | 1986-11-25 | 1988-12-07 | Synthes AG, Chur | Osteosynthetic device |
US4834757A (en) * | 1987-01-22 | 1989-05-30 | Brantigan John W | Prosthetic implant |
US4768787A (en) | 1987-06-15 | 1988-09-06 | Shira Chester S | Golf club including high friction striking face |
DE3728686A1 (en) | 1987-08-27 | 1989-03-09 | Draenert Klaus | PREDICTABLE SURGICAL NETWORK |
EP0340223A1 (en) * | 1987-11-03 | 1989-11-08 | Synthes AG, Chur | Implant for osteosynthesis |
US5057111A (en) * | 1987-11-04 | 1991-10-15 | Park Joon B | Non-stress-shielding bone fracture healing device |
US4887596A (en) * | 1988-03-02 | 1989-12-19 | Synthes (U.S.A.) | Open backed pedicle screw |
CH683963A5 (en) * | 1988-06-10 | 1994-06-30 | Synthes Ag | Internal fixation. |
US4950269A (en) * | 1988-06-13 | 1990-08-21 | Acromed Corporation | Spinal column fixation device |
US5484437A (en) | 1988-06-13 | 1996-01-16 | Michelson; Gary K. | Apparatus and method of inserting spinal implants |
FR2633177B1 (en) * | 1988-06-24 | 1991-03-08 | Fabrication Materiel Orthopedi | IMPLANT FOR A SPINAL OSTEOSYNTHESIS DEVICE, ESPECIALLY IN TRAUMATOLOGY |
US5609635A (en) | 1988-06-28 | 1997-03-11 | Michelson; Gary K. | Lordotic interbody spinal fusion implants |
CA1333209C (en) | 1988-06-28 | 1994-11-29 | Gary Karlin Michelson | Artificial spinal fusion implants |
DE3831657A1 (en) | 1988-09-17 | 1990-03-22 | Boehringer Ingelheim Kg | DEVICE FOR THE OSTEOSYNTHESIS AND METHOD FOR THE PRODUCTION THEREOF |
US4961740B1 (en) * | 1988-10-17 | 1997-01-14 | Surgical Dynamics Inc | V-thread fusion cage and method of fusing a bone joint |
GB2254394B (en) * | 1988-12-21 | 1993-03-17 | Bristol Myers Squibb Co | Coupler assembly |
US5147359A (en) * | 1988-12-21 | 1992-09-15 | Zimmer, Inc. | Spinal hook body |
US5201734A (en) * | 1988-12-21 | 1993-04-13 | Zimmer, Inc. | Spinal locking sleeve assembly |
US5074864A (en) * | 1988-12-21 | 1991-12-24 | Zimmer, Inc. | Clamp assembly for use in a spinal system |
US4966600A (en) * | 1989-01-26 | 1990-10-30 | Songer Robert J | Surgical securance method |
US5116340A (en) * | 1989-01-26 | 1992-05-26 | Songer Robert J | Surgical securance apparatus |
FR2642643B1 (en) * | 1989-02-09 | 1991-05-10 | Vignaud Jean Louis | SPINAL INSTRUMENTATION FOR UNIVERSAL PEDICULAR FIXATION WITH MICROMETRIC ADJUSTMENT DIAPASON SCREW |
US5192321A (en) * | 1989-03-29 | 1993-03-09 | Andrew Strokon | Apparatus and method for knee surgery |
US4987892A (en) * | 1989-04-04 | 1991-01-29 | Krag Martin H | Spinal fixation device |
US5458638A (en) | 1989-07-06 | 1995-10-17 | Spine-Tech, Inc. | Non-threaded spinal implant |
US5344422A (en) * | 1989-10-30 | 1994-09-06 | Synthes (U.S.A.) | Pedicular screw clamp |
US5055104A (en) * | 1989-11-06 | 1991-10-08 | Surgical Dynamics, Inc. | Surgically implanting threaded fusion cages between adjacent low-back vertebrae by an anterior approach |
US4964641A (en) | 1990-01-26 | 1990-10-23 | Diversified Metal Incorporated | Golf club with electrical discharge machined face |
CA2035348C (en) * | 1990-02-08 | 2000-05-16 | Jean-Louis Vignaud | Adjustable fastening device with spinal osteosynthesis rods |
US5290494A (en) * | 1990-03-05 | 1994-03-01 | Board Of Regents, The University Of Texas System | Process of making a resorbable implantation device |
FR2659225B1 (en) | 1990-03-08 | 1995-09-08 | Sofamor | TRANSVERSE FIXING DEVICE FOR PROVIDING A RIGID CROSS-LINK BETWEEN TWO RODS OF A SPINAL OSTEOSYNTHESIS SYSTEM. |
US5360431A (en) | 1990-04-26 | 1994-11-01 | Cross Medical Products | Transpedicular screw system and method of use |
US5102412A (en) * | 1990-06-19 | 1992-04-07 | Chaim Rogozinski | System for instrumentation of the spine in the treatment of spinal deformities |
US5127912A (en) * | 1990-10-05 | 1992-07-07 | R. Charles Ray | Sacral implant system |
US5108446A (en) * | 1990-11-26 | 1992-04-28 | Sulzer Brothers Limited | Hip joint prosthesis |
CS277533B6 (en) * | 1990-12-29 | 1993-03-17 | Krajicek Milan | Fixed osteaosynthesis appliance |
US5390683A (en) | 1991-02-22 | 1995-02-21 | Pisharodi; Madhavan | Spinal implantation methods utilizing a middle expandable implant |
US5123926A (en) * | 1991-02-22 | 1992-06-23 | Madhavan Pisharodi | Artificial spinal prosthesis |
US5171278A (en) * | 1991-02-22 | 1992-12-15 | Madhavan Pisharodi | Middle expandable intervertebral disk implants |
JP3390431B2 (en) | 1991-02-22 | 2003-03-24 | マドハヴァン、ピシャロディ | Centrally expandable disc implant and method |
DE4106823C1 (en) * | 1991-03-04 | 1992-06-25 | Liebscher Kunststofftechnik, 8032 Graefelfing, De | |
US5176678A (en) * | 1991-03-14 | 1993-01-05 | Tsou Paul M | Orthopaedic device with angularly adjustable anchor attachments to the vertebrae |
CA2063159C (en) | 1991-03-22 | 1999-06-15 | Thomas W. Sander | Orthopedic fastener |
US5192327A (en) * | 1991-03-22 | 1993-03-09 | Brantigan John W | Surgical prosthetic implant for vertebrae |
US5563124A (en) | 1991-04-22 | 1996-10-08 | Intermedics Orthopedics/ Denver, Inc. | Osteogenic product and process |
DE69206693T2 (en) | 1991-05-24 | 1996-05-23 | Synthes Ag | Resorbable tendon and bone reinforcement device |
CA2070586C (en) | 1991-06-10 | 1995-11-28 | Barry Eppley | Prosthetic implant |
US5306307A (en) * | 1991-07-22 | 1994-04-26 | Calcitek, Inc. | Spinal disk implant |
US5242448A (en) * | 1991-08-01 | 1993-09-07 | Pettine Kenneth A | Bone probe |
US5290312A (en) * | 1991-09-03 | 1994-03-01 | Alphatec | Artificial vertebral body |
US5603713A (en) | 1991-09-24 | 1997-02-18 | Aust; Gilbert M. | Anterior lumbar/cervical bicortical compression plate |
US5242445A (en) * | 1991-12-05 | 1993-09-07 | Danek Medical, Inc. | Split eyebolt for spinal rod |
US5246442A (en) * | 1991-12-31 | 1993-09-21 | Danek Medical, Inc. | Spinal hook |
US5263953A (en) * | 1991-12-31 | 1993-11-23 | Spine-Tech, Inc. | Apparatus and system for fusing bone joints |
US5261909A (en) * | 1992-02-18 | 1993-11-16 | Danek Medical, Inc. | Variable angle screw for spinal implant system |
JP2664614B2 (en) | 1992-02-20 | 1997-10-15 | ジ・ベ・エス ソシエテ アノニム | Cervical spine correction, fixation, clamping and retraction devices |
US5171279A (en) | 1992-03-17 | 1992-12-15 | Danek Medical | Method for subcutaneous suprafascial pedicular internal fixation |
FR2689750B1 (en) | 1992-04-10 | 1997-01-31 | Eurosurgical | BONE ANCHORING ELEMENT AND SPINAL OSTEOSYNTHESIS DEVICE INCORPORATING SUCH ELEMENTS. |
EP0566810B1 (en) * | 1992-04-21 | 1996-08-14 | SULZER Medizinaltechnik AG | Artificial spinal disc |
EP0639065A4 (en) | 1992-04-29 | 1995-10-25 | Danek Medical Inc | Positionable spinal fixation device. |
US5306309A (en) * | 1992-05-04 | 1994-04-26 | Calcitek, Inc. | Spinal disk implant and implantation kit |
US5423825A (en) | 1992-06-10 | 1995-06-13 | Levine; Andrew S. | Spinal fusion instruments and methods |
US5318566A (en) * | 1992-06-22 | 1994-06-07 | Danek Medical, Inc. | Sternotomy cable and method |
DE59208301D1 (en) * | 1992-06-25 | 1997-05-07 | Synthes Ag | OSTEOSYNTHETIC FIXATION DEVICE |
US5281222A (en) * | 1992-06-30 | 1994-01-25 | Zimmer, Inc. | Spinal implant system |
US5312405A (en) | 1992-07-06 | 1994-05-17 | Zimmer, Inc. | Spinal rod coupler |
US5445642A (en) | 1992-09-01 | 1995-08-29 | Depuy Inc. | Method for installing a femoral component |
US5545165A (en) | 1992-10-09 | 1996-08-13 | Biedermann Motech Gmbh | Anchoring member |
US5348026A (en) * | 1992-09-29 | 1994-09-20 | Smith & Nephew Richards Inc. | Osteoinductive bone screw |
ZA937672B (en) | 1992-10-22 | 1994-05-16 | Danek Medical Inc | Spinal rod transverse connector for supporting vertebral fixation elements |
FR2697742B1 (en) | 1992-11-06 | 1994-12-16 | Biomat | Osteosynthesis device for spinal consolidation. |
US5562735A (en) | 1992-11-09 | 1996-10-08 | Hospital For Joint Diseases | Spinal stabilization system and improved method |
US5702395A (en) | 1992-11-10 | 1997-12-30 | Sofamor S.N.C. | Spine osteosynthesis instrumentation for an anterior approach |
EP0599640B1 (en) | 1992-11-25 | 1998-08-26 | CODMAN & SHURTLEFF INC. | Osteosynthesis plate system |
WO1994013219A1 (en) | 1992-12-04 | 1994-06-23 | Frigg, Robert | Modular marrow nail |
US5312410A (en) * | 1992-12-07 | 1994-05-17 | Danek Medical, Inc. | Surgical cable tensioner |
CA2103200A1 (en) | 1992-12-28 | 1994-06-29 | Robert S. Howland | Cervical spine rod fixation system |
US5527314A (en) | 1993-01-04 | 1996-06-18 | Danek Medical, Inc. | Spinal fixation system |
US5540703A (en) | 1993-01-06 | 1996-07-30 | Smith & Nephew Richards Inc. | Knotted cable attachment apparatus formed of braided polymeric fibers |
US5496318A (en) | 1993-01-08 | 1996-03-05 | Advanced Spine Fixation Systems, Inc. | Interspinous segmental spine fixation device |
US5676701A (en) | 1993-01-14 | 1997-10-14 | Smith & Nephew, Inc. | Low wear artificial spinal disc |
US5336223A (en) * | 1993-02-04 | 1994-08-09 | Rogers Charles L | Telescoping spinal fixator |
US5364399A (en) | 1993-02-05 | 1994-11-15 | Danek Medical, Inc. | Anterior cervical plating system |
DE69420947T2 (en) | 1993-02-10 | 2000-05-18 | Sulzer Spine Tech Inc | TOOL SET TO STABILIZE THE SPINE |
US5626579A (en) | 1993-02-12 | 1997-05-06 | The Cleveland Clinic Foundation | Bone transport and lengthening system |
US5713841A (en) | 1993-02-12 | 1998-02-03 | Graham; Richard A. | Inflatable cervical cervico-thoracic thoraco-lumbar and lumbar exercising device |
US5405391A (en) | 1993-02-16 | 1995-04-11 | Hednerson; Fraser C. | Fusion stabilization chamber |
US5361766A (en) | 1993-02-17 | 1994-11-08 | David Nichols | Quick release bone probe and x-ray marker |
US5282801A (en) * | 1993-02-17 | 1994-02-01 | Danek Medical, Inc. | Top tightening clamp assembly for a spinal fixation system |
US5634925A (en) | 1993-02-19 | 1997-06-03 | Alphatec Manufacturing, Inc. | Apparatus and method for spinal fixation system |
FR2704134B1 (en) | 1993-04-20 | 1998-08-28 | Stryker Corp | Assembly piece for osteosynthesis device. |
EP0621020A1 (en) | 1993-04-21 | 1994-10-26 | SULZER Medizinaltechnik AG | Intervertebral prosthesis and method of implanting such a prosthesis |
WO1994026194A1 (en) | 1993-05-18 | 1994-11-24 | Schäfer Micomed GmbH | Holding device for use in bone surgery |
DE9308276U1 (en) | 1993-06-02 | 1993-08-05 | Weber, Gerhard, 78727 Oberndorf, De | |
US5304179A (en) * | 1993-06-17 | 1994-04-19 | Amei Technologies Inc. | System and method for installing a spinal fixation system at variable angles |
FR2707480B1 (en) | 1993-06-28 | 1995-10-20 | Bisserie Michel | Intervertebral disc prosthesis. |
DE4323956C1 (en) | 1993-07-19 | 1994-10-27 | Eska Medical Gmbh & Co | Fusion dowel for vertebrae |
US5423820A (en) | 1993-07-20 | 1995-06-13 | Danek Medical, Inc. | Surgical cable and crimp |
US5437670A (en) | 1993-08-19 | 1995-08-01 | Danek Medical, Inc. | Attachment plate for top-tightening clamp assembly in a spinal fixation system |
FR2709248B1 (en) | 1993-08-27 | 1995-09-29 | Martin Jean Raymond | Ancillary equipment for placing a spinal instrumentation. |
FR2709246B1 (en) | 1993-08-27 | 1995-09-29 | Martin Jean Raymond | Dynamic implanted spinal orthosis. |
US5395374A (en) | 1993-09-02 | 1995-03-07 | Danek Medical, Inc. | Orthopedic cabling method and apparatus |
US5425772A (en) | 1993-09-20 | 1995-06-20 | Brantigan; John W. | Prosthetic implant for intervertebral spinal fusion |
US5417690A (en) | 1993-09-20 | 1995-05-23 | Codman & Shurtleff, Inc. | Surgical cable |
CA2131141A1 (en) | 1993-09-24 | 1995-03-25 | James A. Boucher | Ligament graft protection apparatus and method |
CN1156255C (en) | 1993-10-01 | 2004-07-07 | 美商-艾克罗米德公司 | Spinal implant |
EP0647436A1 (en) | 1993-10-06 | 1995-04-12 | SMITH & NEPHEW RICHARDS, INC. | Bone section reattachment apparatus |
WO1995010239A1 (en) | 1993-10-08 | 1995-04-20 | Chaim Rogozinski | Spinal treatment and long bone fixation apparatus and method |
WO1995010238A1 (en) | 1993-10-08 | 1995-04-20 | Chaim Rogozinski | Spinal treatment apparatus and method including multi-directional attachment member |
US5397364A (en) | 1993-10-12 | 1995-03-14 | Danek Medical, Inc. | Anterior interbody fusion device |
US5466237A (en) | 1993-11-19 | 1995-11-14 | Cross Medical Products, Inc. | Variable locking stabilizer anchor seat and screw |
US5415658A (en) | 1993-12-14 | 1995-05-16 | Pioneer Laboratories, Inc. | Surgical cable loop connector |
US5628740A (en) | 1993-12-23 | 1997-05-13 | Mullane; Thomas S. | Articulating toggle bolt bone screw |
US5514180A (en) | 1994-01-14 | 1996-05-07 | Heggeness; Michael H. | Prosthetic intervertebral devices |
US5611800A (en) | 1994-02-15 | 1997-03-18 | Alphatec Manufacturing, Inc. | Spinal fixation system |
US5536270A (en) | 1994-02-24 | 1996-07-16 | Pioneer Laboratories, Inc. | Cable system for bone securance |
US5720747A (en) | 1994-03-11 | 1998-02-24 | Burke; Dennis W. | Apparatus for crimping a surgical wire |
FR2717068B1 (en) | 1994-03-14 | 1996-04-26 | Biomat | Vertebral interbody fusion cage. |
US6093207A (en) | 1994-03-18 | 2000-07-25 | Pisharodi; Madhavan | Middle expanded, removable intervertebral disk stabilizer disk |
US5697977A (en) | 1994-03-18 | 1997-12-16 | Pisharodi; Madhavan | Method and apparatus for spondylolisthesis reduction |
US5569253A (en) | 1994-03-29 | 1996-10-29 | Danek Medical, Inc. | Variable-angle surgical cable crimp assembly and method |
DE69516279T2 (en) | 1994-05-23 | 2000-08-10 | Sulzer Spine Tech Inc | IMPLANT FOR INTERVERTEBRAL FUSION |
WO1995032674A1 (en) | 1994-06-01 | 1995-12-07 | Synthes Ag, Chur | Forked bone plate |
US5536271A (en) | 1994-06-02 | 1996-07-16 | Depuy, Inc. | Patella reaming system |
SE9402130D0 (en) * | 1994-06-17 | 1994-06-17 | Sven Olerud | Device and method for plate fixation of legs |
DE4423257C2 (en) | 1994-07-02 | 2001-07-12 | Ulrich Heinrich | Implant to be inserted between the vertebral body of the spine as a placeholder |
DE4425357C2 (en) | 1994-07-18 | 1996-07-04 | Harms Juergen | Anchoring element |
US5507746A (en) | 1994-07-27 | 1996-04-16 | Lin; Chih-I | Holding and fixing mechanism for orthopedic surgery |
US5671695A (en) | 1994-07-28 | 1997-09-30 | Depuy Inc. | Replacement ligament graft passer and method |
AU3207895A (en) | 1994-08-23 | 1996-03-14 | Spine-Tech, Inc. | Cervical spine stabilization system |
US5526664A (en) | 1994-09-07 | 1996-06-18 | Progressive Technologies, Inc. | Method of forming a textured pattern on a metal plate which pattern is transformed to a plastic part, and a press plate and plastic part produced thereby |
US5681311A (en) | 1994-09-15 | 1997-10-28 | Smith & Nephew, Inc. | Osteosynthesis apparatus |
US5690633A (en) | 1994-09-23 | 1997-11-25 | Smith & Nephew Richards, Inc. | Orthopedic fracture fixation device |
US5601553A (en) | 1994-10-03 | 1997-02-11 | Synthes (U.S.A.) | Locking plate and bone screw |
WO1996011642A1 (en) | 1994-10-17 | 1996-04-25 | Raymedica, Inc. | Prosthetic spinal disc nucleus |
US5674296A (en) | 1994-11-14 | 1997-10-07 | Spinal Dynamics Corporation | Human spinal disc prosthesis |
CN1045531C (en) | 1994-11-16 | 1999-10-13 | 安德烈·阿尔诺·苏贝朗 | Device for mutually moving two bodies |
US5611801A (en) | 1994-11-29 | 1997-03-18 | Pioneer Laboratories, Inc. | Method and apparatus for bone fracture fixation |
SE505452C2 (en) | 1995-02-14 | 1997-09-01 | Robert J Medoff | An implantable fragment clip / support and method of making it |
US5716358A (en) | 1994-12-02 | 1998-02-10 | Johnson & Johnson Professional, Inc. | Directional bone fixation device |
WO1996017564A1 (en) | 1994-12-09 | 1996-06-13 | Sofamor Danek Group, Inc. | Adjustable vertebral body replacement |
US5540696A (en) | 1995-01-06 | 1996-07-30 | Zimmer, Inc. | Instrumentation for use in orthopaedic surgery |
FR2729556B1 (en) | 1995-01-23 | 1998-10-16 | Sofamor | SPINAL OSTEOSYNTHESIS DEVICE WITH MEDIAN HOOK AND VERTEBRAL ANCHOR SUPPORT |
US5620443A (en) | 1995-01-25 | 1997-04-15 | Danek Medical, Inc. | Anterior screw-rod connector |
US5665122A (en) | 1995-01-31 | 1997-09-09 | Kambin; Parviz | Expandable intervertebral cage and surgical method |
DE19504867C1 (en) | 1995-02-14 | 1996-02-29 | Harms Juergen | Position retainer for spine |
US5643260A (en) | 1995-02-14 | 1997-07-01 | Smith & Nephew, Inc. | Orthopedic fixation system |
CN1134810A (en) | 1995-02-17 | 1996-11-06 | 索发默达纳集团股份有限公司 | Improved interbody spinal fusion implants |
US5609596A (en) | 1995-03-09 | 1997-03-11 | Smith & Nephew Richards Inc. | Guide rod holder for manipulating surgical wires and pins |
AU2101495A (en) | 1995-03-13 | 1996-10-02 | Steven D. Gelbard | Spinal stabilization implant system |
US5632747A (en) | 1995-03-15 | 1997-05-27 | Osteotech, Inc. | Bone dowel cutter |
US5645084A (en) | 1995-06-07 | 1997-07-08 | Danek Medical, Inc. | Method for spinal fusion without decortication |
DE19511268A1 (en) | 1995-03-27 | 1996-10-02 | Johannes Franz Dr Med Hoenig | Osteosynthesis plate for bone stabilising e.g. post-tumour resection etc. |
US5782919A (en) | 1995-03-27 | 1998-07-21 | Sdgi Holdings, Inc. | Interbody fusion device and method for restoration of normal spinal anatomy |
DE59508718D1 (en) | 1995-03-27 | 2000-10-19 | Synthes Ag | BONE PLATE |
US5688272A (en) | 1995-03-30 | 1997-11-18 | Danek Medical, Inc. | Top-tightening transverse connector for a spinal fixation system |
JP3501542B2 (en) * | 1995-04-07 | 2004-03-02 | 富久 腰野 | Medical hard tissue replacements and artificial joints |
US5716355A (en) | 1995-04-10 | 1998-02-10 | Sofamor Danek Group, Inc. | Transverse connection for spinal rods |
US5607424A (en) | 1995-04-10 | 1997-03-04 | Tropiano; Patrick | Domed cage |
FR2732887B1 (en) | 1995-04-12 | 1997-07-04 | Euros Sa | DEVICE FOR THE CROSS-LINKAGE OF A SPINAL HOLDING SYSTEM |
US5669911A (en) | 1995-04-13 | 1997-09-23 | Fastenetix, L.L.C. | Polyaxial pedicle screw |
US5520690A (en) | 1995-04-13 | 1996-05-28 | Errico; Joseph P. | Anterior spinal polyaxial locking screw plate assembly |
US5645549A (en) | 1995-04-24 | 1997-07-08 | Danek Medical, Inc. | Template for positioning interbody fusion devices |
US5613967A (en) | 1995-04-28 | 1997-03-25 | Acromed Corporation | Apparatus for maintaining bone portions in a desired spatial relationship |
FR2733413B1 (en) | 1995-04-27 | 1997-10-17 | Jbs Sa | CERVICAL CAGE DEVICE FOR PERFORMING INTERSOMATIC ARTHRODESIS |
US5630816A (en) | 1995-05-01 | 1997-05-20 | Kambin; Parviz | Double barrel spinal fixation system and method |
US5607428A (en) * | 1995-05-01 | 1997-03-04 | Lin; Kwan C. | Orthopedic fixation device having a double-threaded screw |
US5702391A (en) | 1995-05-16 | 1997-12-30 | Lin; Chih-I | Intervertebral fusion device |
JP3689146B2 (en) | 1995-05-30 | 2005-08-31 | ペンタックス株式会社 | Elements for screw fixation to bone |
US5569306A (en) | 1995-06-06 | 1996-10-29 | Thal; Raymond | Knotless suture anchor assembly |
US5683391A (en) | 1995-06-07 | 1997-11-04 | Danek Medical, Inc. | Anterior spinal instrumentation and method for implantation and revision |
US5578034A (en) | 1995-06-07 | 1996-11-26 | Danek Medical, Inc. | Apparatus for preventing screw backout in a bone plate fixation system |
US5702449A (en) | 1995-06-07 | 1997-12-30 | Danek Medical, Inc. | Reinforced porous spinal implants |
US5676665A (en) | 1995-06-23 | 1997-10-14 | Bryan; Donald W. | Spinal fixation apparatus and method |
FR2736535B3 (en) | 1995-07-10 | 1997-08-14 | Martin Jean Jacques | SPINAL OSTEOSYNTHESIS DEVICE |
US5609593A (en) | 1995-07-13 | 1997-03-11 | Fastenetix, Llc | Advanced polyaxial locking hook and coupling element device for use with top loading rod fixation devices |
US5584834A (en) | 1995-07-13 | 1996-12-17 | Fastenetix, L.L.C. | Polyaxial locking screw and coupling element assembly for use with side loading rod fixation apparatus |
US5578033A (en) | 1995-07-13 | 1996-11-26 | Fastenetix, L.L.C. | Advanced polyaxial locking hook and coupling element device for use with side loading rod fixation devices |
US5586984A (en) | 1995-07-13 | 1996-12-24 | Fastenetix, L.L.C. | Polyaxial locking screw and coupling element assembly for use with rod fixation apparatus |
US5609594A (en) | 1995-07-13 | 1997-03-11 | Fastenetix Llc | Extending hook and polyaxial coupling element device for use with side loading road fixation devices |
US5549608A (en) * | 1995-07-13 | 1996-08-27 | Fastenetix, L.L.C. | Advanced polyaxial locking screw and coupling element device for use with rod fixation apparatus |
US5554157A (en) | 1995-07-13 | 1996-09-10 | Fastenetix, L.L.C. | Rod securing polyaxial locking screw and coupling element assembly |
US5575792A (en) * | 1995-07-14 | 1996-11-19 | Fastenetix, L.L.C. | Extending hook and polyaxial coupling element device for use with top loading rod fixation devices |
US5607430A (en) | 1995-08-25 | 1997-03-04 | Biomet, Inc. | Bone stabilization implant having a bone plate portion with integral cable clamping means |
US5690842A (en) | 1995-09-12 | 1997-11-25 | Zimmer, Inc. | Orthopaedic wire with an enlarged end and method of forming the same |
US5645544A (en) | 1995-09-13 | 1997-07-08 | Danek Medical, Inc. | Variable angle extension rod |
US5643264A (en) | 1995-09-13 | 1997-07-01 | Danek Medical, Inc. | Iliac screw |
DE29515007U1 (en) | 1995-09-19 | 1995-12-07 | Pennig Dietmar | Osteosynthesis tools |
US5702392A (en) | 1995-09-25 | 1997-12-30 | Wu; Shing-Sheng | Coupling plate for spinal correction and a correction device of using the same |
US5649927A (en) | 1995-09-27 | 1997-07-22 | Pioneer Laboratories, Inc. | Cable crimp system |
US5683394A (en) | 1995-09-29 | 1997-11-04 | Advanced Spine Fixation Systems, Inc. | Fusion mass constrainer |
US5683392A (en) | 1995-10-17 | 1997-11-04 | Wright Medical Technology, Inc. | Multi-planar locking mechanism for bone fixation |
US5697929A (en) | 1995-10-18 | 1997-12-16 | Cross Medical Products, Inc. | Self-limiting set screw for use with spinal implant systems |
US5693053A (en) | 1995-10-19 | 1997-12-02 | Sdgi Holdings, Inc. | Variable angle and transitional linking member |
US5688273A (en) | 1995-10-23 | 1997-11-18 | Fastenetix, Llc. | Spinal implant apparatus having a single central rod and plow hooks |
US5688274A (en) | 1995-10-23 | 1997-11-18 | Fastenetix Llc. | Spinal implant device having a single central rod and claw hooks |
CA2162837C (en) | 1995-11-14 | 2002-01-22 | John Runciman | Bone plate shaping device |
US5690632A (en) | 1995-11-30 | 1997-11-25 | Schwartz; Paul Steven | Osteosynthesis screw fastener having angularly adjustable threads and methods of use therefor |
US5709684A (en) | 1995-12-04 | 1998-01-20 | Fastenetix, Llc | Advanced compression locking variable length cross-link device |
US5667507A (en) | 1995-12-04 | 1997-09-16 | Fastenetix, Llc | Compression locking variable length cross-link device for use with dual rod apparatus |
FR2742040B1 (en) | 1995-12-07 | 1998-01-23 | Groupe Lepine | ASSEMBLY DEVICE FOR EXTENDED PARTS OF OSTEOSYNTHESIS MATERIAL, ESPECIALLY SPINAL |
US5709683A (en) | 1995-12-19 | 1998-01-20 | Spine-Tech, Inc. | Interbody bone implant having conjoining stabilization features for bony fusion |
DE19548395A1 (en) | 1995-12-22 | 1997-09-18 | Leibinger Gmbh | Osteosynthesis device |
US5669910A (en) | 1996-01-02 | 1997-09-23 | Pioneer Laboratories, Inc. | Crosslink for implantable rods |
US5766253A (en) | 1996-01-16 | 1998-06-16 | Surgical Dynamics, Inc. | Spinal fusion device |
US5722977A (en) | 1996-01-24 | 1998-03-03 | Danek Medical, Inc. | Method and means for anterior lumbar exact cut with quadrilateral osteotome and precision guide/spacer |
US5662653A (en) | 1996-02-22 | 1997-09-02 | Pioneer Laboratories, Inc. | Surgical rod-to-bone attachment |
US5653763A (en) * | 1996-03-29 | 1997-08-05 | Fastenetix, L.L.C. | Intervertebral space shape conforming cage device |
US5668288A (en) | 1996-04-16 | 1997-09-16 | Depuy Orthopaedics, Inc. | Polyester ionomers for implant fabrication |
US5690629A (en) | 1996-04-24 | 1997-11-25 | Acromed Corporation | Apparatus for maintaining vertebrae of a spinal column in a desired spatial relationship |
US5667508A (en) | 1996-05-01 | 1997-09-16 | Fastenetix, Llc | Unitary locking cap for use with a pedicle screw |
US5702399A (en) | 1996-05-16 | 1997-12-30 | Pioneer Laboratories, Inc. | Surgical cable screw connector |
US5709685A (en) | 1996-05-21 | 1998-01-20 | Sdgi Holdings, Inc. | Positionable clip for provisionally capturing a component on a spinal rod |
US5713900A (en) | 1996-05-31 | 1998-02-03 | Acromed Corporation | Apparatus for retaining bone portions in a desired spatial relationship |
US5681312A (en) | 1996-05-31 | 1997-10-28 | Acromed Corporation | Spine construct with band clamp |
US5702455A (en) | 1996-07-03 | 1997-12-30 | Saggar; Rahul | Expandable prosthesis for spinal fusion |
US5707372A (en) | 1996-07-11 | 1998-01-13 | Third Millennium Engineering, Llc. | Multiple node variable length cross-link device |
US5716416A (en) | 1996-09-10 | 1998-02-10 | Lin; Chih-I | Artificial intervertebral disk and method for implanting the same |
US5690631A (en) | 1996-09-11 | 1997-11-25 | Walter Lorenz Surgical, Inc. | Multi-configurable plating system |
US5782832A (en) | 1996-10-01 | 1998-07-21 | Surgical Dynamics, Inc. | Spinal fusion implant and method of insertion thereof |
US5702293A (en) * | 1996-10-30 | 1997-12-30 | The United States Of America As Represented By The United States Department Of Energy | Holding fixture for metallographic mount polishing |
US5720751A (en) | 1996-11-27 | 1998-02-24 | Jackson; Roger P. | Tools for use in seating spinal rods in open ended implants |
US5683393A (en) | 1996-12-23 | 1997-11-04 | Third Millennium Engineering, Llc | Bidirectional rod-hook locking mechanism |
US5707395A (en) | 1997-01-16 | 1998-01-13 | Li Medical Technologies, Inc. | Surgical fastener and method and apparatus for ligament repair |
US5931838A (en) * | 1997-01-28 | 1999-08-03 | Vito; Raymond P. | Fixation assembly for orthopedic applications |
ES2268267T3 (en) * | 1997-02-11 | 2007-03-16 | Warsaw Orthopedic, Inc. | PREVIOUS CERVICAL PLATE FOR UNIQUE TYPE LOCK DEVICE. |
US5713904A (en) * | 1997-02-12 | 1998-02-03 | Third Millennium Engineering, Llc | Selectively expandable sacral fixation screw-sleeve device |
US6017345A (en) * | 1997-05-09 | 2000-01-25 | Spinal Innovations, L.L.C. | Spinal fixation plate |
ZA983955B (en) * | 1997-05-15 | 2001-08-13 | Sdgi Holdings Inc | Anterior cervical plating system. |
FR2766353B1 (en) * | 1997-07-28 | 1999-11-26 | Dimso Sa | IMPLANT, ESPECIALLY ANTERIOR CERVICAL PLATE |
US5954722A (en) * | 1997-07-29 | 1999-09-21 | Depuy Acromed, Inc. | Polyaxial locking plate |
US6454769B2 (en) * | 1997-08-04 | 2002-09-24 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
US5904683A (en) * | 1998-07-10 | 1999-05-18 | Sulzer Spine-Tech Inc. | Anterior cervical vertebral stabilizing device |
US6402759B1 (en) * | 1998-12-11 | 2002-06-11 | Biohorizons Implant Systems, Inc. | Surgical fastener driver |
US6261291B1 (en) * | 1999-07-08 | 2001-07-17 | David J. Talaber | Orthopedic implant assembly |
US6331179B1 (en) * | 2000-01-06 | 2001-12-18 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
US6235033B1 (en) * | 2000-04-19 | 2001-05-22 | Synthes (Usa) | Bone fixation assembly |
US6599290B2 (en) * | 2001-04-17 | 2003-07-29 | Ebi, L.P. | Anterior cervical plating system and associated method |
-
2000
- 2000-01-06 US US09/479,458 patent/US6331179B1/en not_active Expired - Lifetime
-
2001
- 2001-01-08 AU AU27770/01A patent/AU2777001A/en not_active Abandoned
- 2001-01-08 CA CA002396535A patent/CA2396535C/en not_active Expired - Fee Related
- 2001-01-08 WO PCT/US2001/000724 patent/WO2001049191A1/en active Application Filing
- 2001-01-08 EP EP01901919A patent/EP1259176B1/en not_active Expired - Lifetime
- 2001-01-08 JP JP2001549560A patent/JP4741141B2/en not_active Expired - Fee Related
- 2001-11-19 US US10/015,206 patent/US6964664B2/en not_active Expired - Lifetime
-
2003
- 2003-12-15 US US10/735,976 patent/US7611527B2/en not_active Expired - Fee Related
-
2009
- 2009-10-08 US US12/575,639 patent/US8025677B2/en not_active Expired - Fee Related
-
2011
- 2011-09-06 US US13/225,753 patent/US20120016365A1/en not_active Abandoned
Also Published As
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EP1259176B1 (en) | 2012-09-12 |
EP1259176A4 (en) | 2009-07-29 |
AU2777001A (en) | 2001-07-16 |
US20040127897A1 (en) | 2004-07-01 |
US6964664B2 (en) | 2005-11-15 |
US20020045898A1 (en) | 2002-04-18 |
US7611527B2 (en) | 2009-11-03 |
JP4741141B2 (en) | 2011-08-03 |
US6331179B1 (en) | 2001-12-18 |
WO2001049191A1 (en) | 2001-07-12 |
CA2396535A1 (en) | 2001-07-12 |
US8025677B2 (en) | 2011-09-27 |
JP2003518977A (en) | 2003-06-17 |
US20100222814A1 (en) | 2010-09-02 |
EP1259176A1 (en) | 2002-11-27 |
US20120016365A1 (en) | 2012-01-19 |
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