CA2605340A1 - Force limiting coupling assemblies for spinal implants - Google Patents
Force limiting coupling assemblies for spinal implants Download PDFInfo
- Publication number
- CA2605340A1 CA2605340A1 CA002605340A CA2605340A CA2605340A1 CA 2605340 A1 CA2605340 A1 CA 2605340A1 CA 002605340 A CA002605340 A CA 002605340A CA 2605340 A CA2605340 A CA 2605340A CA 2605340 A1 CA2605340 A1 CA 2605340A1
- Authority
- CA
- Canada
- Prior art keywords
- implant
- anchor
- seat
- receiver
- receiving portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7038—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other to a different extent in different directions, e.g. within one plane only
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/031—Automatic limiting or abutting means, e.g. for safety torque limiting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Neurology (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The forces exerted on a spinal implant (60) by one or more coupling assemblies (10, 110, 210) are controlled to facilitate the use of the implant (60) in spinal stabilization and other procedures. The coupling assemblies (10, 110, 210) are structured to limit the forces exerted on the implant (60) to avoid undesirable alteration of a characteristic of the implant (60) while engaging the implant (60) to the coupling assembly (10, 110, 210) and providing at least one of a rigid, semi-rigid or variable engagement of the coupling assembly (10, 110, 210) with one or more anatomical structures of the spinal column.
Description
FORCE LIMITING COUPLING ASSEMBLIES FOR SPINAL IMPLANTS
BACKGROVND
Spinal implants can be engaged to or along one or more vertebrae of the spinal column for the treatment of various spinal conditions. Fasteners can be provided to secure the implant to a particular location along the spinal column. The engagement between the implant and the fasteners can result in forces being exerted on the implant.
In some cases, one or more characteristics of the implant could be altered as a result of these forces.
SUMMARY
The forces exerted on a spinal implant by one or more coupling assemblies are controlled to facilitate the application of implants having characteristics that may be undesirably altered if sufficient forces are exerted thereon as a result of spinal stabilization and other procedures. The coupling assemblies are structured to limit the forces exerted on the implant by the coupling assembly while providing at least one of a rigid, semi-rigid or variable engagement of the coupling assembly with one or more anatomical structures of the spinal column.
The coupling assemblies secure one or more implants along the spinal colunm while providing a limited or controlled exertion of forces by the coupling assembly on the implant. The coupling assemblies include an anchor member for engaging the coupling assembly to an underlying bony structure, a receiver member for receiving an implant, and a securing member for securing the implant to the receiver member. The coupling assemblies each include a force limiting construct that secures the implant to the coupling assembly while limiting or controlling the forces applied to the implant as the anchor member is engaged in a position relative to the coupling assembly with the securing member.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of one embodiment coupling assembly.
BACKGROVND
Spinal implants can be engaged to or along one or more vertebrae of the spinal column for the treatment of various spinal conditions. Fasteners can be provided to secure the implant to a particular location along the spinal column. The engagement between the implant and the fasteners can result in forces being exerted on the implant.
In some cases, one or more characteristics of the implant could be altered as a result of these forces.
SUMMARY
The forces exerted on a spinal implant by one or more coupling assemblies are controlled to facilitate the application of implants having characteristics that may be undesirably altered if sufficient forces are exerted thereon as a result of spinal stabilization and other procedures. The coupling assemblies are structured to limit the forces exerted on the implant by the coupling assembly while providing at least one of a rigid, semi-rigid or variable engagement of the coupling assembly with one or more anatomical structures of the spinal column.
The coupling assemblies secure one or more implants along the spinal colunm while providing a limited or controlled exertion of forces by the coupling assembly on the implant. The coupling assemblies include an anchor member for engaging the coupling assembly to an underlying bony structure, a receiver member for receiving an implant, and a securing member for securing the implant to the receiver member. The coupling assemblies each include a force limiting construct that secures the implant to the coupling assembly while limiting or controlling the forces applied to the implant as the anchor member is engaged in a position relative to the coupling assembly with the securing member.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view of one embodiment coupling assembly.
Fig. 2 is the coupling assembly of Fig. 1 with an implant positioned for engagement with the coupling assembly.
Figs. 3A and 3B are partial sectional views of the coupling assembly of Fig. 1 with an implant extending therethrough and an anchor member extending therefrom.
Fig, 4 is an elevation view of another embodiment coupling assembly with the anchor member not shown and with an implant positioned for engagement thereto.
Fig. 5 is a perspective view of the coupling assembly of Fig. 4 with an anchor and an implant engaged thereto.
Fig. 6 is a perspective view of another embodiment coupling assembly.
Fig. 7 is an elevational view of the coupling assembly of Fig. 6 with an implant and anchor engaged thereto.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Any such alterations and further modifications in the illustrated devices, and such further applications of the principles of the invention as illustrated herein are contemplated as would normally occur to one skilled in the art to which the invention relates.
Coupling assemblies are provided to secure one or more implants along the spinal column while providing a limited or controlled exertion of forces by the coupling assembly on the implant. The coupling assemblies each include an anchor member for engaging the coupling assembly to an underlying bony structure, a receiver member for receiving the implant, and a securing member for securing the implant to the receiver member. The coupling assemblies each include a force limiting construct that interacts with the securing member securing the implant to the coupling assembly to limit or control the forces applied to the implant. The limitation on the forces exerted on the implant prevents undesirable alteration of a characteristic of the implant.
Referring to Figs. 1-3B, there is shown a coupling assembly 10 including an anchor member 12, a receiver member 20 coupled to anchor member 12, and a securing member 40. An implant 60 is positionable on, in or about receiver member 20, and securing member 40 is movable relative to implant 60 and receiver member 20 to secure implant 60 to coupling assembly 10. Coupling assembly 10 includes a force limiting construct that limits or controls the forces applied to implant 60 by receiver member 20 and securing member 40 when implant 60 is secured to coupling assembly 10. The implant can be engaged along one or more vertebrae of the spinal column with one or more coupling assemblies 10 or any other type of fastener to provide, for example, a spinal stabilization system.
Securing member 40 is movably engageable with receiver member 20 and includes an upper break-off portion 42 and a lower engaging portion 44. Lower engaging portion 44 is illustrated as an externally threaded set screw, although other configurations are contemplated. A first tool recess 46 is formed by brealc-off portion 42, and a second tool recess 48 is formed by engaging portion 44. A driving tool in first tool recess 46 can be manipulated to engage securing member 40 in receiver member 20 in firm engagement until sufficient resistance is supplied to cause a torque to be applied to brealc-off portion 42 to remove it. Second tool recess 48 is accessible to allow a tool to be positioned to apply force to tighten or loosen securing member 40 even when break-off portion 42 is removed.
Securing member 40 further comprises lower extensions 50 that are rotatable relative to engaging portion 44. Accordingly, as engaging portion is threadingly engaged along arms 24, lower extensions 50 can advance linearly toward and along the opposite sides of implant 50. Each of the lower extensions 50 includes an end surface 52. An implant engaging surface 54 extends between lower extensions 50. In the illustrated embodiment, implant engaging surface 54 is concavely curved, and other shapes are also contemplated.
Receiver member 20 includes a lower portion 22 and opposing arms 24 extending therefrom that define an implant receiving portion 21 for receiving implant 60. Arms 24 each include an internal thread profile to threadingly engage securing member 40, although other engagement structures to engage securing member 40 and receiving member 20 to one another are contemplated. Arms 24 each include a through-hole 28 to receive and facilitate engagement by and manipulation with an insertion instrument (not shown.) Receiver member 20 further includes a seat member 30 positioned between arms 24 adjacent a head 18 of anchor member 12. Lower portion 22 of receiver member defines a receptacle 26 in which head 18 of anchor member 12 is pivotally captured and retained with a retaining clip 19.
Figs. 3A and 3B are partial sectional views of the coupling assembly of Fig. 1 with an implant extending therethrough and an anchor member extending therefrom.
Fig, 4 is an elevation view of another embodiment coupling assembly with the anchor member not shown and with an implant positioned for engagement thereto.
Fig. 5 is a perspective view of the coupling assembly of Fig. 4 with an anchor and an implant engaged thereto.
Fig. 6 is a perspective view of another embodiment coupling assembly.
Fig. 7 is an elevational view of the coupling assembly of Fig. 6 with an implant and anchor engaged thereto.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Any such alterations and further modifications in the illustrated devices, and such further applications of the principles of the invention as illustrated herein are contemplated as would normally occur to one skilled in the art to which the invention relates.
Coupling assemblies are provided to secure one or more implants along the spinal column while providing a limited or controlled exertion of forces by the coupling assembly on the implant. The coupling assemblies each include an anchor member for engaging the coupling assembly to an underlying bony structure, a receiver member for receiving the implant, and a securing member for securing the implant to the receiver member. The coupling assemblies each include a force limiting construct that interacts with the securing member securing the implant to the coupling assembly to limit or control the forces applied to the implant. The limitation on the forces exerted on the implant prevents undesirable alteration of a characteristic of the implant.
Referring to Figs. 1-3B, there is shown a coupling assembly 10 including an anchor member 12, a receiver member 20 coupled to anchor member 12, and a securing member 40. An implant 60 is positionable on, in or about receiver member 20, and securing member 40 is movable relative to implant 60 and receiver member 20 to secure implant 60 to coupling assembly 10. Coupling assembly 10 includes a force limiting construct that limits or controls the forces applied to implant 60 by receiver member 20 and securing member 40 when implant 60 is secured to coupling assembly 10. The implant can be engaged along one or more vertebrae of the spinal column with one or more coupling assemblies 10 or any other type of fastener to provide, for example, a spinal stabilization system.
Securing member 40 is movably engageable with receiver member 20 and includes an upper break-off portion 42 and a lower engaging portion 44. Lower engaging portion 44 is illustrated as an externally threaded set screw, although other configurations are contemplated. A first tool recess 46 is formed by brealc-off portion 42, and a second tool recess 48 is formed by engaging portion 44. A driving tool in first tool recess 46 can be manipulated to engage securing member 40 in receiver member 20 in firm engagement until sufficient resistance is supplied to cause a torque to be applied to brealc-off portion 42 to remove it. Second tool recess 48 is accessible to allow a tool to be positioned to apply force to tighten or loosen securing member 40 even when break-off portion 42 is removed.
Securing member 40 further comprises lower extensions 50 that are rotatable relative to engaging portion 44. Accordingly, as engaging portion is threadingly engaged along arms 24, lower extensions 50 can advance linearly toward and along the opposite sides of implant 50. Each of the lower extensions 50 includes an end surface 52. An implant engaging surface 54 extends between lower extensions 50. In the illustrated embodiment, implant engaging surface 54 is concavely curved, and other shapes are also contemplated.
Receiver member 20 includes a lower portion 22 and opposing arms 24 extending therefrom that define an implant receiving portion 21 for receiving implant 60. Arms 24 each include an internal thread profile to threadingly engage securing member 40, although other engagement structures to engage securing member 40 and receiving member 20 to one another are contemplated. Arms 24 each include a through-hole 28 to receive and facilitate engagement by and manipulation with an insertion instrument (not shown.) Receiver member 20 further includes a seat member 30 positioned between arms 24 adjacent a head 18 of anchor member 12. Lower portion 22 of receiver member defines a receptacle 26 in which head 18 of anchor member 12 is pivotally captured and retained with a retaining clip 19.
Seat member 30 is positioned in the adjacent implant receiving portion 21 of receiver member 20 along arms 24. A central opening 37 is provided in communication with head 18 of anchor member 12 to receive a driving tool (not shown) to apply a driving force to anchor member 12. Seat member 30 includes an implant support surface defining a lower portion of passage 21. Implant support surface 34 is defined at least in part by upper extensions 36 of seat member 30. Upper extensions 36 include an upper contact surface 38 contactable with end surfaces 52 of securing member 40.
4ther embodiments contemplate that one of seat member 30 and securing member 40 does not include extensions, and the other of seat member 30 and securing member 40 includes extensions of sufficient length to contact the other of seat member 30 and securing member 40.
The relationship between securing member 40 and seat member 30 when in contact with one another defines a force limiting construct that limits forces exerted on implant 60.
Implant support surface 34 and implant engaging surface 54 are moveable toward one another to an implant securing position where surfaces 34, 54 are separated by a spacing 56. Spacing 56 is sized to grip implant 60 between surfaces 34, 54 with sufficient force to secure implant 60 to coupling assembly 10, but limit the exerted forces to prevent undesirable alteration of one or more characteristics of implant 60.
In use, anchor member 12 is engaged to an underlying bony structure with receiver member 20 positioned to receive implant 60. Implant 60 is positioned in implant receiving portion 21 of receiver member 20 along or adjacent implant support surface 34 of seat member 30. Securing member 40 is engaged to receiver member 20, and advanced therealong until implant engaging surface 54 contacts implant 60. Securing member 40 and seat member 30 defme an implant holder in which implant engaging surface 54 is spaced a distance 56 from implant support surface 34. In this configuration, end surfaces 52 are positioned in contact with upper contact surfaces 38 of seat member 30, and this force limiting construct maintains spacing 56 and prevents it from decreasing as securing 40 is further advanced distally in receiver member 20. If securing member 40 is further advanced distally in receiver member 20, it simultaneously moves seat member distally. In one embodiment, this positions seat member 30 into contact with head 18 of anchor member 12 to rigidly fix anchor member 12 in receiver member 20. Other embodiments contemplate that anchor member 12 maintains a multi-axial arrangement in receiver member 20 even when securing member 40 and seat member 30 are finnly engaged to one another such that distal movement in receiver member 20 cannot be obtained.
The maintenance of spacing 56 with the force linliting construct allows spacing 56 5 to be sized to provide a desired frictional or clamping engagement with implant to maintain implant 60 in position relative to coupling assembly 10, but limits the forces applied to preserve, maintain or prevent substantial alteration of one or more desired characteristics of implant 60. For example, implant 60 can be made from a polymer material, and the spacing 56 prevents securing member 40 and or seat member 30 from piercing, punching, cutting, compressing, or otherwise deforming implant 60 in an undesired fashion. The characteristic of implant 60 can include any one or combination of surface profile, cross-sectional size, cross-sectional shape, cross-sectional area, compression stress, and shear stress, for example.
Anchor member 12 in the illustrated embodiment is a bone screw and includes a shaft 14 having a thread profile 16 therealong and enlarged head 18 at a proximal end of anchor member 12. Head 18 includes a tool recess (not shown) to receive a driving tool to facilitate engagement of anchor member 12 to the underlying bone and ridges along an upper surface thereof that are engaged by seat member 30 to lock the anchor members 12 in position relative to receiver member 20. Various forms for anchor member 12 are contemplated, including threaded and non-threaded anchors, uni-axial and multi-axial arrangements, hooks, clamps, spikes, cables, interbody implants, fusion devices, cannulated screws, fenestrated screws, and bolts, for example.
Implant 60 can be structured either along or in combination with one or more other implants and/or coupling assemblies to provide a desired stabilization effect.
Implant 60 includes a characteristic for which it is desirable to control or limit the coupling forces exerted by coupling assembly 10 on implant 60. For example, implant 60 can be made from a material that can be damaged, deformed, or otherwise undesirably altered when securing member 40 is engaged with receiver member 20 in a manner that sufficiently rigidly fixes anchor 10 in receiver member 20.
Referring now to Figs. 4 and 5, there is shown another embodiment coupling assembly 110 for securing implant 60 along the spinal column. Coupling assembly 110 includes an anchor member 112, a receiver member 120 and a securing member 140.
4ther embodiments contemplate that one of seat member 30 and securing member 40 does not include extensions, and the other of seat member 30 and securing member 40 includes extensions of sufficient length to contact the other of seat member 30 and securing member 40.
The relationship between securing member 40 and seat member 30 when in contact with one another defines a force limiting construct that limits forces exerted on implant 60.
Implant support surface 34 and implant engaging surface 54 are moveable toward one another to an implant securing position where surfaces 34, 54 are separated by a spacing 56. Spacing 56 is sized to grip implant 60 between surfaces 34, 54 with sufficient force to secure implant 60 to coupling assembly 10, but limit the exerted forces to prevent undesirable alteration of one or more characteristics of implant 60.
In use, anchor member 12 is engaged to an underlying bony structure with receiver member 20 positioned to receive implant 60. Implant 60 is positioned in implant receiving portion 21 of receiver member 20 along or adjacent implant support surface 34 of seat member 30. Securing member 40 is engaged to receiver member 20, and advanced therealong until implant engaging surface 54 contacts implant 60. Securing member 40 and seat member 30 defme an implant holder in which implant engaging surface 54 is spaced a distance 56 from implant support surface 34. In this configuration, end surfaces 52 are positioned in contact with upper contact surfaces 38 of seat member 30, and this force limiting construct maintains spacing 56 and prevents it from decreasing as securing 40 is further advanced distally in receiver member 20. If securing member 40 is further advanced distally in receiver member 20, it simultaneously moves seat member distally. In one embodiment, this positions seat member 30 into contact with head 18 of anchor member 12 to rigidly fix anchor member 12 in receiver member 20. Other embodiments contemplate that anchor member 12 maintains a multi-axial arrangement in receiver member 20 even when securing member 40 and seat member 30 are finnly engaged to one another such that distal movement in receiver member 20 cannot be obtained.
The maintenance of spacing 56 with the force linliting construct allows spacing 56 5 to be sized to provide a desired frictional or clamping engagement with implant to maintain implant 60 in position relative to coupling assembly 10, but limits the forces applied to preserve, maintain or prevent substantial alteration of one or more desired characteristics of implant 60. For example, implant 60 can be made from a polymer material, and the spacing 56 prevents securing member 40 and or seat member 30 from piercing, punching, cutting, compressing, or otherwise deforming implant 60 in an undesired fashion. The characteristic of implant 60 can include any one or combination of surface profile, cross-sectional size, cross-sectional shape, cross-sectional area, compression stress, and shear stress, for example.
Anchor member 12 in the illustrated embodiment is a bone screw and includes a shaft 14 having a thread profile 16 therealong and enlarged head 18 at a proximal end of anchor member 12. Head 18 includes a tool recess (not shown) to receive a driving tool to facilitate engagement of anchor member 12 to the underlying bone and ridges along an upper surface thereof that are engaged by seat member 30 to lock the anchor members 12 in position relative to receiver member 20. Various forms for anchor member 12 are contemplated, including threaded and non-threaded anchors, uni-axial and multi-axial arrangements, hooks, clamps, spikes, cables, interbody implants, fusion devices, cannulated screws, fenestrated screws, and bolts, for example.
Implant 60 can be structured either along or in combination with one or more other implants and/or coupling assemblies to provide a desired stabilization effect.
Implant 60 includes a characteristic for which it is desirable to control or limit the coupling forces exerted by coupling assembly 10 on implant 60. For example, implant 60 can be made from a material that can be damaged, deformed, or otherwise undesirably altered when securing member 40 is engaged with receiver member 20 in a manner that sufficiently rigidly fixes anchor 10 in receiver member 20.
Referring now to Figs. 4 and 5, there is shown another embodiment coupling assembly 110 for securing implant 60 along the spinal column. Coupling assembly 110 includes an anchor member 112, a receiver member 120 and a securing member 140.
Receiver member 120 includes an implant support surface 121 defined by an implant receiving portion 122. Implant 60 is positioned through implant receiving portion 122.
Receiver member 120 further includes an arm 124 extending from receiving portion 122.
Arm 124 includes an externally threaded surface profile that threadingly receives securing member 140 thereabout, although other coupling arrangements are also contemplated. In the illustrated embodiment, securing member 140 is a nut. Other embodiments contemplate other forms for securing member 140, including set screws, friction couplings, sleeves, clamps or other devices.
Anchor member 112 includes a threaded shaft 114 and a head 118. Head 118 includes a pair arms 116 spaces from one another to defme a passage 119 that receives arm 124 therein. A seat member 130 is positioned adjacent head 118 and implant 60. Seat member 130 defines a central aperture 134 that slidingly receives arm 124 therethrough.
The surface of seat member 130 that is adjacent implant 60 includes an implant engaging surface 136 shaped to correspond to the outer surface profile of implant 60 adjacent thereto. The opposite surface of seat member 130 includes grooves 132 that interdigitate and rigidly engage grooves 117 of anchor member head 118 to prevent relative movement between anchor member 112 and the other components of coupling assembly 110 when securing member 140 is firmly positioned against the opposite surface of head 118, as shown in Fig. 5.
Receiver member 120 further provides a force limiting construct in the form of contact surfaces 128 adjacent seat member 130. Contact surfaces 128 project outwardly a sufficient distance from receiving portion 122 so that the surface of seat member 130 adjacent central aperture 134 contacts contact surfaces 128 when positioned adjacent thereto.
In use, anchor member 112 is engaged to the underlying bony structure. Implant 60 is positioned through implant receiving portion 122, and arm 124 is placed into passage 119 of head 118 of anchor member 112 with seat member 130 on one side of head 118 and securing member 140 on the other side. Securing member 140 is advanced along arm 124 into contact with anchor member 112, and moves seat member 130 and anchor member 12 toward one another. Simultaneously, implant 60 and receiver 120 are moved toward implant engaging surface 136 and into contact therewith. The construct is drawn into firmer engagement until end surface 138 of seat member 130 contacts contact surfaces 128 of receiver member 120. The clamping force exerted on implant 60 between implant support surface 121 and implant engaging surface 136 is thus limited by the force limiting construct of coupling assembly 110. As securing member 140 is further tightened against head 118 of anchor member 112, grooves 117, 132 are positioned into interdigitating contact with one another Referring now to Figs. 6 and 7, there is shown another embodiment coupling assembly 210 for securing implant 60 along the spinal column. Coupling assembly 210 includes an anchor member 212, a receiver member 220 and at least one securing member 250. Receiver member 220 includes an implant support surface 221 defmed by an implant receiving portion 222. Implant 60 is positioned through implant receiving portion 222.
Receiver member 220 further includes an arm 224 extending from receiving portion 222.
Arm 224 slidingly receives and retains first seat member 230 and second seat member 247 thereabout, although other coupling arrangements are also contemplated.
Opposite implant receiving portion 222, receiver member 220 includes an anchor receiving portion 240. Anchor receiving portion 240 includes a body portion 248 at the opposite end of arm 224. Body portion 248 defines an anchor receptacle 242, and passages 244 extend through and are in communication with anchor receptacle 242.
Anchor member 212 includes a proximal end that extends through anchor receptacle 242 of securing member 240. One or more securing members 250 are engaged in respective ones of passages 244, and manipulated to contact anchor member 212 and seat it against an anchor seat 246 of second seat member 247. Further advancement of one or more securing members 250 against anchor nlember 212 moves first and second seat members 230, 247 toward implant 60, as indicated by arrow 251. If not already so positioned, this positions implant contact surface 236 of seat member 230 in contact with implant 60, and further movement of first seat member 230 in the direction of arrow 251 can be achieved until implant 60 contacts implant support surface 221.
Receiver member 220 further provides a force limiting construct in the form of contact surfaces 228 adjacent seat member 230. Contact surfaces 228 project outwardly a sufficient distance from arm 224 of receiving portion 222 so that the surface of first seat member 230 extending about arm 224 and facing implant 60 contacts contact surfaces 228 when positioned adjacent thereto.
Receiver member 120 further includes an arm 124 extending from receiving portion 122.
Arm 124 includes an externally threaded surface profile that threadingly receives securing member 140 thereabout, although other coupling arrangements are also contemplated. In the illustrated embodiment, securing member 140 is a nut. Other embodiments contemplate other forms for securing member 140, including set screws, friction couplings, sleeves, clamps or other devices.
Anchor member 112 includes a threaded shaft 114 and a head 118. Head 118 includes a pair arms 116 spaces from one another to defme a passage 119 that receives arm 124 therein. A seat member 130 is positioned adjacent head 118 and implant 60. Seat member 130 defines a central aperture 134 that slidingly receives arm 124 therethrough.
The surface of seat member 130 that is adjacent implant 60 includes an implant engaging surface 136 shaped to correspond to the outer surface profile of implant 60 adjacent thereto. The opposite surface of seat member 130 includes grooves 132 that interdigitate and rigidly engage grooves 117 of anchor member head 118 to prevent relative movement between anchor member 112 and the other components of coupling assembly 110 when securing member 140 is firmly positioned against the opposite surface of head 118, as shown in Fig. 5.
Receiver member 120 further provides a force limiting construct in the form of contact surfaces 128 adjacent seat member 130. Contact surfaces 128 project outwardly a sufficient distance from receiving portion 122 so that the surface of seat member 130 adjacent central aperture 134 contacts contact surfaces 128 when positioned adjacent thereto.
In use, anchor member 112 is engaged to the underlying bony structure. Implant 60 is positioned through implant receiving portion 122, and arm 124 is placed into passage 119 of head 118 of anchor member 112 with seat member 130 on one side of head 118 and securing member 140 on the other side. Securing member 140 is advanced along arm 124 into contact with anchor member 112, and moves seat member 130 and anchor member 12 toward one another. Simultaneously, implant 60 and receiver 120 are moved toward implant engaging surface 136 and into contact therewith. The construct is drawn into firmer engagement until end surface 138 of seat member 130 contacts contact surfaces 128 of receiver member 120. The clamping force exerted on implant 60 between implant support surface 121 and implant engaging surface 136 is thus limited by the force limiting construct of coupling assembly 110. As securing member 140 is further tightened against head 118 of anchor member 112, grooves 117, 132 are positioned into interdigitating contact with one another Referring now to Figs. 6 and 7, there is shown another embodiment coupling assembly 210 for securing implant 60 along the spinal column. Coupling assembly 210 includes an anchor member 212, a receiver member 220 and at least one securing member 250. Receiver member 220 includes an implant support surface 221 defmed by an implant receiving portion 222. Implant 60 is positioned through implant receiving portion 222.
Receiver member 220 further includes an arm 224 extending from receiving portion 222.
Arm 224 slidingly receives and retains first seat member 230 and second seat member 247 thereabout, although other coupling arrangements are also contemplated.
Opposite implant receiving portion 222, receiver member 220 includes an anchor receiving portion 240. Anchor receiving portion 240 includes a body portion 248 at the opposite end of arm 224. Body portion 248 defines an anchor receptacle 242, and passages 244 extend through and are in communication with anchor receptacle 242.
Anchor member 212 includes a proximal end that extends through anchor receptacle 242 of securing member 240. One or more securing members 250 are engaged in respective ones of passages 244, and manipulated to contact anchor member 212 and seat it against an anchor seat 246 of second seat member 247. Further advancement of one or more securing members 250 against anchor nlember 212 moves first and second seat members 230, 247 toward implant 60, as indicated by arrow 251. If not already so positioned, this positions implant contact surface 236 of seat member 230 in contact with implant 60, and further movement of first seat member 230 in the direction of arrow 251 can be achieved until implant 60 contacts implant support surface 221.
Receiver member 220 further provides a force limiting construct in the form of contact surfaces 228 adjacent seat member 230. Contact surfaces 228 project outwardly a sufficient distance from arm 224 of receiving portion 222 so that the surface of first seat member 230 extending about arm 224 and facing implant 60 contacts contact surfaces 228 when positioned adjacent thereto.
In use, anchor member 212 is engaged to the underlying bony structure. Implant 60 is positioned through implant receiving portion 222, and securing member 250 is manipulated to position anchor member 212 against second seat member 247. This moves implant 60 and anchor member 212 toward one another, resulting in first and second seat members 230, 247 moving relative to one another along arm 224. Further displacement of the assembly with securing member 250 positions first seat member 230 in contact with implant 60, and implant 60 in contact with implant support surface 221 of receiver member 220. First seat member 230 contacts contact surfaces 228, providing a force limiting construct that limits displacement of seat member 230 relative to implant 60 as securing member 250 is further advanced and maintains a minimum spacing between implant engaging surface 236 and implant support surface 221 to limit forces exerted on implant 60. Any further advancement of securing member 250 does not create additional forces on implant 60, and the resulting forces are directed to clamp seat members 230, 247 against one another with the adjacent grooved surfaces in interdigitating, rigid engagement with one another.
In the illustrated embodiment, implant 60 is an elongated spinal rod structured to extend between at least two coupling assemblies to stabilize a motion segment between the at least two coupling assemblies. Various forms for implant 60 are contemplated, including rods, tethers, cables, wires, plates, and staples, for example. In one specific embodiment, implant 60 is a spinal rod comprised of any one or combination of plastic, polymer, tissue, fabric, or mesh material. Other embodiments contemplate that implant 60 can be made from any suitable biocompatible material.
In one technique, the underlying bone forms a portion of a vertebral body of the spinal column. The underlying bone can be a part of the anterior, oblique, antero-lateral, lateral or posterior vertebral elements, including the pedicle, spinous process, transverse processes, lamina or facet, for example. Applications in techniques along any portion or portions of the spinal column are contemplated, including the cervical, thoracic, lumbar and sacral regions. The coupling assemblies and implants can be positioned along the spinal column in invasive procedures where slcin and tissue are dissected and retracted to expose the implant locations, or in minimally invasive procedures where one or more the anchor assemblies and implants are guided through at least the tissue adjacent the column to the desired implantation location.
In the illustrated embodiment, implant 60 is an elongated spinal rod structured to extend between at least two coupling assemblies to stabilize a motion segment between the at least two coupling assemblies. Various forms for implant 60 are contemplated, including rods, tethers, cables, wires, plates, and staples, for example. In one specific embodiment, implant 60 is a spinal rod comprised of any one or combination of plastic, polymer, tissue, fabric, or mesh material. Other embodiments contemplate that implant 60 can be made from any suitable biocompatible material.
In one technique, the underlying bone forms a portion of a vertebral body of the spinal column. The underlying bone can be a part of the anterior, oblique, antero-lateral, lateral or posterior vertebral elements, including the pedicle, spinous process, transverse processes, lamina or facet, for example. Applications in techniques along any portion or portions of the spinal column are contemplated, including the cervical, thoracic, lumbar and sacral regions. The coupling assemblies and implants can be positioned along the spinal column in invasive procedures where slcin and tissue are dissected and retracted to expose the implant locations, or in minimally invasive procedures where one or more the anchor assemblies and implants are guided through at least the tissue adjacent the column to the desired implantation location.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.
Claims (29)
1. A system for stabilizing a bony segment, comprising:
an implant;
a coupling assembly engageable to said implant, wherein said coupling assembly comprises:
an anchor member engageable to the bony segment;
a receiver member for receiving the implant; and a securing member movable relative to said receiver member to a first position wherein the implant is secured between an implant support surface and an implant engaging surface of said coupling assembly, said coupling assembly including a force limiting construct structured to maintain a minimum spacing between said implant support surface and said implant engaging surface as said securing member and said receiver member are moved relative to one another to couple said anchor member in said coupling assembly.
an implant;
a coupling assembly engageable to said implant, wherein said coupling assembly comprises:
an anchor member engageable to the bony segment;
a receiver member for receiving the implant; and a securing member movable relative to said receiver member to a first position wherein the implant is secured between an implant support surface and an implant engaging surface of said coupling assembly, said coupling assembly including a force limiting construct structured to maintain a minimum spacing between said implant support surface and said implant engaging surface as said securing member and said receiver member are moved relative to one another to couple said anchor member in said coupling assembly.
2. The system of claim 1, wherein:
said anchor member includes a screw having a head pivotally captured in said receiver member; and said receiver member includes a seat member positioned adjacent said head between said implant and said anchor member, said seat member including said implant support surface and said securing member including said implant engaging surface.
said anchor member includes a screw having a head pivotally captured in said receiver member; and said receiver member includes a seat member positioned adjacent said head between said implant and said anchor member, said seat member including said implant support surface and said securing member including said implant engaging surface.
3. The system of claim 2, wherein said force limiting construct includes opposite extensions of said seat member extending at least partially about said implant and opposite extensions of said securing member extending at least partially about said implant and positionable in contact with said opposite extensions of said seat member at said minimum spacing, the contact between said opposite extensions preventing movement of said implant support surface and said implant engaging surface toward another.
4. The system of claim 3, wherein at the minimum spacing the implant support surface and the implant engaging surface contact the implant, and said securing member is further movable relative to said receiver member to engage said seat member with said head of said anchor member to rigidly fix said anchor member in said receiver member.
5. The system of claim 1, wherein the implant is an elongate spinal rod and said receiver member includes a lower portion for receiving said anchor member and pair of arms extending from said lower portion, said arms defining an implant receiving portion therebetween for receiving the implant therethrough.
6. The system of claim 5, wherein:
said arms are internally threaded;
said securing member includes an externally threaded body engageable to said arms; and said implant engaging surface is a concavely curved surface along a distal face of said securing member.
said arms are internally threaded;
said securing member includes an externally threaded body engageable to said arms; and said implant engaging surface is a concavely curved surface along a distal face of said securing member.
7. The system of claim 1, wherein said receiver member includes an implant receiving portion defining a passage for receiving the implant and an arm extending from said implant receiving portion, said implant support surface extending along at least a portion of said passage.
8. The system of claim 7, wherein said anchor includes a head positionable about said arm between said securing member and a seat member, said seat member being positioned adjacent said implant.
9. The system of claim 8, wherein said implant engaging surface is defined by said seat member along a surface of said seat member oriented toward said implant, said securing member being movable along said arm to contact said head of said anchor member and position said implant support surface and said implant engaging surface at said minimum spacing in contact said implant.
10. The system of claim 9, wherein said force limiting construct includes contact surfaces extending outwardly of said implant receiving portion, said seat member being positioned in contact with said contact surfaces of said implant receiving portion in said first position to maintain said minimum spacing between said implant support surface and said implant engaging surface.
11. The system of claim 10, wherein said securing member is further movable relative to said receiver member to rigidly fix said head of said anchor member between said seat member and said securing member while said force limiting construct maintains said minimum spacing between said implant support surface and said implant engaging surface.
12 12. The system of claim 11, wherein said head of said anchor and an adjacent surface of said seat member include interdigitating grooved surfaces to rigidly fix said anchor member in said coupling assembly.
13. The system of claim 7, wherein said receiver member includes an anchor receiving portion opposite said implant receiving portion, said anchor receiving portion defining a passage for receiving a proximal end of said anchor member, said securing member being positionable in contact with said proximal end of said anchor member to secure said receiver member to said anchor member.
14. The system of claim 13, farther comprising a first seat member and a second seat member movable along said arm of said receiver member, wherein said implant engaging surface is defined by said first seat member and said second seat member defines an anchor receiving surface oriented toward said proximal end of said anchor member.
15. The system of claim 14, wherein said securing member is operable to move said proximal end of said anchor member and said implant toward one another until said implant support surface of said receiver member and said implant engaging surface of said first seat member are separated by said minimum spacing.
16. The system of claim 15, wherein said force limiting construct includes contact surfaces extending outwardly from said implant receiving portion of said receiver member, said first seat member being positioned in contact with said contact surfaces of said implant receiving portion to maintain said minimum spacing.
17. The system of claim 16, wherein with said minimum spacing between implant engaging surface and said implant support surface being maintained said securing member is further movable relative to said receiver member to rigidly fix said proximal end of said anchor member between said securing member and said second seat member.
18. The system of claim 17, wherein adjacent surfaces of said first and second seat members include grooved surfaces that interdigitate with one another to rigidly fix said anchor member and said implant relative to one another.
19. The system of claim 1, wherein the bony segment is a spinal column.
20. A coupling assembly for securing an implant along a spinal column, comprising:
an anchor member engageable to the spinal column;
a receiver member including an anchor receiving portion for receiving the anchor member and an implant receiving portion for receiving the implant, said implant receiving portion including an implant support surface;
at least one seat member movable relative to said receiver member, said at least one seat member including an implant engaging surface; and a securing member engaged with said receiver member and operable to move said at least one seat member to a first position to engage the implant between said implant support surface and said implant engaging surface with said implant support surface and said implant engaging surface separated by a distance, said securing member being movable to a second position to rigidly engage said anchor member with said receiver member while said distance is maintained.
an anchor member engageable to the spinal column;
a receiver member including an anchor receiving portion for receiving the anchor member and an implant receiving portion for receiving the implant, said implant receiving portion including an implant support surface;
at least one seat member movable relative to said receiver member, said at least one seat member including an implant engaging surface; and a securing member engaged with said receiver member and operable to move said at least one seat member to a first position to engage the implant between said implant support surface and said implant engaging surface with said implant support surface and said implant engaging surface separated by a distance, said securing member being movable to a second position to rigidly engage said anchor member with said receiver member while said distance is maintained.
21. The coupling assembly of claim 20, wherein said receiver member includes contact surfaces extending outwardly therefrom contacting said seat member in said first position to prevent said seat member from moving toward the implant from said first position.
22. The coupling assembly of claim 20, wherein said receiver member includes an arm and said anchor member includes a U-shaped head positioned about said arm between said seat member and said securing member.
23. The coupling assembly of claim 22, wherein said seat member includes a grooved surface oriented toward said head of said anchor member and an oppositely facing surface defining said implant engaging surface.
24. The coupling assembly of claim 23, wherein said head of said anchor includes a grooved surface adjacent said grooved surface of said seat member, said adjacent grooved surfaces engaging one another in interdigitating fashion in said second position.
25. The coupling assembly of claim 20, wherein:
said receiver member includes an arm extending between said anchor receiving portion and said implant receiving portion;
said at least one seat member includes a first seat member adjacent said implant receiving portion, said first seat member including said implant support surface oriented toward the implant in said implant receiving portion;
said at least one seat member includes a second seat member position about said arm with an anchor receiving surface oriented toward said anchor member in said anchor receiving portion; and said securing member is movable relative to said anchor receiving portion into contact with said anchor member to position said anchor member in contact with said anchor receiving surface.
said receiver member includes an arm extending between said anchor receiving portion and said implant receiving portion;
said at least one seat member includes a first seat member adjacent said implant receiving portion, said first seat member including said implant support surface oriented toward the implant in said implant receiving portion;
said at least one seat member includes a second seat member position about said arm with an anchor receiving surface oriented toward said anchor member in said anchor receiving portion; and said securing member is movable relative to said anchor receiving portion into contact with said anchor member to position said anchor member in contact with said anchor receiving surface.
26. The coupling assembly of claim 25, wherein as said securing member is further advanced relative to said receiver member in contact with said anchor member, said anchor member moves said second seat member along said ann into contact with said first seat member, and said first and second seat members are moveable along said arm to said first position.
27. The coupling assembly of claim 26, wherein said implant receiving portion of said receiver member includes a contact surface extending outwardly therefrom and said first seat member is positioned in contact with said contact surface in said first position to maintain said spacing as said securing member is further advanced relative to said receiver member to said second position to rigidly fix said anchor member in said anchor member receiving portion and position adjacent surfaces of said first and second seat members in contact with one another.
28. The coupling assembly of claim 27, wherein said adjacent surfaces of said first and second seat members are each grooved and interdigitate with one another in said second position.
29. A coupling assembly for engaging an implant along a spinal column, the coupling assembly comprising:
an anchor member engageable to the spinal column;
a receiver member including an implant receiving portion for receiving the implant;
a seat member positioned in the receiver member adjacent said anchor member, said seat member including an implant support surface facing away from said anchor member; and a securing member engageable to said receiver member, said securing member including an implant engaging surface oriented toward said implant support surface and said securing member being movable relative to said receiver member to a first position to secure the implant between said implant support surface and said implant engaging surface, wherein in said first position said securing member contacts said seat member to maintain a minimum spacing between said implant support surface and said implant engaging surface as said securing member is advanced in said receiver member to move said seat member in contact with said anchor member to rigidly couple said anchor member in said receiver member.
an anchor member engageable to the spinal column;
a receiver member including an implant receiving portion for receiving the implant;
a seat member positioned in the receiver member adjacent said anchor member, said seat member including an implant support surface facing away from said anchor member; and a securing member engageable to said receiver member, said securing member including an implant engaging surface oriented toward said implant support surface and said securing member being movable relative to said receiver member to a first position to secure the implant between said implant support surface and said implant engaging surface, wherein in said first position said securing member contacts said seat member to maintain a minimum spacing between said implant support surface and said implant engaging surface as said securing member is advanced in said receiver member to move said seat member in contact with said anchor member to rigidly couple said anchor member in said receiver member.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/112,221 | 2005-04-22 | ||
US11/112,221 US7794481B2 (en) | 2005-04-22 | 2005-04-22 | Force limiting coupling assemblies for spinal implants |
PCT/US2006/014814 WO2006115954A2 (en) | 2005-04-22 | 2006-04-19 | Force limiting coupling assemblies for spinal implants |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2605340A1 true CA2605340A1 (en) | 2006-11-02 |
Family
ID=37054628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002605340A Abandoned CA2605340A1 (en) | 2005-04-22 | 2006-04-19 | Force limiting coupling assemblies for spinal implants |
Country Status (6)
Country | Link |
---|---|
US (1) | US7794481B2 (en) |
EP (1) | EP1885265A2 (en) |
JP (1) | JP2008536637A (en) |
AU (1) | AU2006240091A1 (en) |
CA (1) | CA2605340A1 (en) |
WO (1) | WO2006115954A2 (en) |
Families Citing this family (111)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7833250B2 (en) * | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
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 |
US8292926B2 (en) * | 2005-09-30 | 2012-10-23 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
US7862587B2 (en) | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
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 |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
US6716214B1 (en) | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US7621918B2 (en) | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US8926670B2 (en) | 2003-06-18 | 2015-01-06 | Roger P. Jackson | Polyaxial bone screw assembly |
US8398682B2 (en) | 2003-06-18 | 2013-03-19 | Roger P. Jackson | Polyaxial bone screw assembly |
US8257398B2 (en) | 2003-06-18 | 2012-09-04 | Jackson Roger P | Polyaxial bone screw with cam capture |
US8377102B2 (en) | 2003-06-18 | 2013-02-19 | Roger P. Jackson | Polyaxial bone anchor with spline capture connection and lower pressure insert |
US7967850B2 (en) | 2003-06-18 | 2011-06-28 | Jackson Roger P | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
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 |
US7527638B2 (en) | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US7179261B2 (en) | 2003-12-16 | 2007-02-20 | Depuy Spine, Inc. | Percutaneous access devices and bone anchor assemblies |
US11419642B2 (en) | 2003-12-16 | 2022-08-23 | Medos International Sarl | Percutaneous access devices and bone anchor assemblies |
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 |
JP2007525274A (en) | 2004-02-27 | 2007-09-06 | ロジャー・ピー・ジャクソン | Orthopedic implant rod reduction instrument set and method |
US8152810B2 (en) | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
US7160300B2 (en) | 2004-02-27 | 2007-01-09 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US7651502B2 (en) | 2004-09-24 | 2010-01-26 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
US8226690B2 (en) | 2005-07-22 | 2012-07-24 | The Board Of Trustees Of The Leland Stanford Junior University | Systems and methods for stabilization of bone structures |
US8267969B2 (en) | 2004-10-20 | 2012-09-18 | Exactech, Inc. | Screw systems and methods for use in stabilization of bone structures |
JP2008519656A (en) | 2004-11-10 | 2008-06-12 | ロジャー・ピー・ジャクソン | Helical guide and forward flange with break extension |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
US9216041B2 (en) | 2009-06-15 | 2015-12-22 | Roger P. Jackson | Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts |
WO2006057837A1 (en) | 2004-11-23 | 2006-06-01 | Jackson Roger P | Spinal fixation tool attachment structure |
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 |
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 |
US9980753B2 (en) | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
WO2006058221A2 (en) | 2004-11-24 | 2006-06-01 | Abdou Samy M | Devices and methods for inter-vertebral orthopedic device placement |
DE102005005647A1 (en) * | 2005-02-08 | 2006-08-17 | Henning Kloss | Pedicle screw for spinal column stabilizing device, has screw head with two opposed oblong hole shaped recesses, and ball unit including recess for accommodating connecting unit and movably mounted in head |
US10076361B2 (en) | 2005-02-22 | 2018-09-18 | Roger P. Jackson | Polyaxial bone screw with spherical capture, compression and alignment and retention structures |
US7780706B2 (en) | 2005-04-27 | 2010-08-24 | Trinity Orthopedics, Llc | Mono-planar pedicle screw method, system and kit |
US8523865B2 (en) | 2005-07-22 | 2013-09-03 | Exactech, Inc. | Tissue splitter |
US7625394B2 (en) * | 2005-08-05 | 2009-12-01 | Warsaw Orthopedic, Inc. | Coupling assemblies for spinal implants |
US8105368B2 (en) | 2005-09-30 | 2012-01-31 | Jackson Roger P | Dynamic stabilization connecting member with slitted core and outer sleeve |
US7704271B2 (en) | 2005-12-19 | 2010-04-27 | Abdou M Samy | Devices and methods for inter-vertebral orthopedic device placement |
US8043337B2 (en) | 2006-06-14 | 2011-10-25 | Spartek Medical, Inc. | Implant system and method to treat degenerative disorders of the spine |
EP1891904B1 (en) * | 2006-08-24 | 2013-12-25 | Biedermann Technologies GmbH & Co. KG | Bone anchoring device |
US8096996B2 (en) | 2007-03-20 | 2012-01-17 | Exactech, Inc. | Rod reducer |
WO2008073323A2 (en) | 2006-12-08 | 2008-06-19 | Jackson Roger P | Tool system for dynamic spinal implants |
US8747445B2 (en) * | 2007-01-15 | 2014-06-10 | Ebi, Llc | Spinal fixation device |
US8366745B2 (en) | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
US8475498B2 (en) | 2007-01-18 | 2013-07-02 | Roger P. Jackson | Dynamic stabilization connecting member with cord connection |
US10792074B2 (en) | 2007-01-22 | 2020-10-06 | Roger P. Jackson | Pivotal bone anchor assemly with twist-in-place friction fit insert |
US10383660B2 (en) | 2007-05-01 | 2019-08-20 | Roger P. Jackson | Soft stabilization assemblies with pretensioned cords |
US8353937B2 (en) * | 2007-05-22 | 2013-01-15 | Warsaw Orthopedic, Inc. | Spinal stabilization systems and methods |
US8048113B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Deflection rod system with a non-linear deflection to load characteristic for a dynamic stabilization and motion preservation spinal implantation system and method |
US8083772B2 (en) | 2007-06-05 | 2011-12-27 | Spartek Medical, Inc. | Dynamic spinal rod assembly and method for dynamic stabilization of the spine |
US8048115B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Surgical tool and method for implantation of a dynamic bone anchor |
US7635380B2 (en) | 2007-06-05 | 2009-12-22 | Spartek Medical, Inc. | Bone anchor with a compressor element for receiving a rod for a dynamic stabilization and motion preservation spinal implantation system and method |
US8021396B2 (en) | 2007-06-05 | 2011-09-20 | Spartek Medical, Inc. | Configurable dynamic spinal rod and method for dynamic stabilization of the spine |
US8092501B2 (en) | 2007-06-05 | 2012-01-10 | Spartek Medical, Inc. | Dynamic spinal rod and method for dynamic stabilization of the spine |
US7993372B2 (en) | 2007-06-05 | 2011-08-09 | Spartek Medical, Inc. | Dynamic stabilization and motion preservation spinal implantation system with a shielded deflection rod system and method |
US8048121B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Spine implant with a defelction rod system anchored to a bone anchor and method |
US8114134B2 (en) | 2007-06-05 | 2012-02-14 | Spartek Medical, Inc. | Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine |
US20090076549A1 (en) * | 2007-09-17 | 2009-03-19 | Warsaw Orthopedic, Inc. | Orthopedic implant system |
US8083775B2 (en) | 2008-02-26 | 2011-12-27 | Spartek Medical, Inc. | Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine |
US8211155B2 (en) | 2008-02-26 | 2012-07-03 | Spartek Medical, Inc. | Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine |
US8057515B2 (en) | 2008-02-26 | 2011-11-15 | Spartek Medical, Inc. | Load-sharing anchor having a deflectable post and centering spring and method for dynamic stabilization of the spine |
US8333792B2 (en) | 2008-02-26 | 2012-12-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine |
US8097024B2 (en) | 2008-02-26 | 2012-01-17 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for stabilization of the spine |
US8016861B2 (en) | 2008-02-26 | 2011-09-13 | Spartek Medical, Inc. | Versatile polyaxial connector assembly and method for dynamic stabilization of the spine |
US8337536B2 (en) | 2008-02-26 | 2012-12-25 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine |
US8007518B2 (en) | 2008-02-26 | 2011-08-30 | Spartek Medical, Inc. | Load-sharing component having a deflectable post and method for dynamic stabilization of the spine |
US8267979B2 (en) | 2008-02-26 | 2012-09-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine |
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 |
WO2010028287A2 (en) | 2008-09-05 | 2010-03-11 | Synthes Usa, Llc | Bone fixation assembly |
CN103826560A (en) | 2009-06-15 | 2014-05-28 | 罗杰.P.杰克逊 | Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet |
US11229457B2 (en) | 2009-06-15 | 2022-01-25 | Roger P. Jackson | Pivotal bone anchor assembly with insert tool deployment |
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 |
EP2753252A1 (en) | 2009-06-15 | 2014-07-16 | Jackson, Roger P. | Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock |
US8657856B2 (en) | 2009-08-28 | 2014-02-25 | Pioneer Surgical Technology, Inc. | Size transition spinal rod |
CA2774471A1 (en) | 2009-10-05 | 2011-04-14 | James L. Surber | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
CN102695465A (en) | 2009-12-02 | 2012-09-26 | 斯帕泰克医疗股份有限公司 | Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod |
US8764806B2 (en) | 2009-12-07 | 2014-07-01 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US20110307018A1 (en) | 2010-06-10 | 2011-12-15 | Spartek Medical, Inc. | Adaptive spinal rod and methods for stabilization of the spine |
AU2011299558A1 (en) | 2010-09-08 | 2013-05-02 | Roger P. Jackson | Dynamic stabilization members with elastic and inelastic sections |
DE112011103644T5 (en) | 2010-11-02 | 2013-12-24 | Roger P. Jackson | Polyaxial bone anchor with quick-release shaft and rotatable holder |
US20120116458A1 (en) * | 2010-11-08 | 2012-05-10 | Warsaw Orthopedic, Inc. | Modular pivotable screw assembly and method |
WO2012128825A1 (en) | 2011-03-24 | 2012-09-27 | Jackson Roger P | Polyaxial bone anchor with compound articulation and pop-on shank |
US11730760B2 (en) | 2011-04-01 | 2023-08-22 | The Bioregentech Institute, Inc. | Laser assisted wound healing protocol and system |
US8845728B1 (en) | 2011-09-23 | 2014-09-30 | Samy Abdou | Spinal fixation devices and methods of use |
US8911479B2 (en) | 2012-01-10 | 2014-12-16 | Roger P. Jackson | Multi-start closures for open implants |
US8430916B1 (en) | 2012-02-07 | 2013-04-30 | Spartek Medical, Inc. | Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors |
US20130226240A1 (en) | 2012-02-22 | 2013-08-29 | Samy Abdou | Spinous process fixation devices and methods of use |
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 |
US8911478B2 (en) | 2012-11-21 | 2014-12-16 | Roger P. Jackson | Splay control closure for open bone anchor |
US10058354B2 (en) | 2013-01-28 | 2018-08-28 | Roger P. Jackson | Pivotal bone anchor assembly with frictional shank head seating surfaces |
US8852239B2 (en) | 2013-02-15 | 2014-10-07 | Roger P Jackson | Sagittal angle screw with integral shank and receiver |
US9566092B2 (en) | 2013-10-29 | 2017-02-14 | Roger P. Jackson | Cervical bone anchor with collet retainer and outer locking sleeve |
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 |
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 |
US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
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 |
US11654293B2 (en) | 2016-11-10 | 2023-05-23 | The Bioregentech Institute, Inc. | Laser assisted wound healing protocol and system |
WO2018089954A1 (en) | 2016-11-10 | 2018-05-17 | BioRegentech | Laser assisted wound healing protocol and system |
US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
EP3900654B1 (en) | 2020-04-23 | 2024-01-03 | Biedermann Technologies GmbH & Co. KG | Bone anchoring device |
Family Cites Families (72)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4569338A (en) | 1984-02-09 | 1986-02-11 | Edwards Charles C | Sacral fixation device |
SE458417B (en) | 1985-08-15 | 1989-04-03 | Sven Olerud | FIXING INSTRUMENTS PROVIDED FOR USE IN SPINE OPERATIONS |
CH683963A5 (en) | 1988-06-10 | 1994-06-30 | Synthes Ag | Internal fixation. |
CA2035348C (en) | 1990-02-08 | 2000-05-16 | Jean-Louis Vignaud | Adjustable fastening device with spinal osteosynthesis rods |
SE9002569D0 (en) | 1990-08-03 | 1990-08-03 | Sven Olerud | SPINAL KNUT |
CH685850A5 (en) | 1990-11-26 | 1995-10-31 | Synthes Ag | anchoring device |
DE9104025U1 (en) | 1991-04-03 | 1992-07-30 | Waldemar Link Gmbh & Co, 2000 Hamburg, De | |
US5254118A (en) | 1991-12-04 | 1993-10-19 | Srdjian Mirkovic | Three dimensional spine fixation system |
US5261909A (en) | 1992-02-18 | 1993-11-16 | Danek Medical, Inc. | Variable angle screw for spinal implant system |
US5527314A (en) | 1993-01-04 | 1996-06-18 | Danek Medical, Inc. | Spinal fixation system |
US5282801A (en) | 1993-02-17 | 1994-02-01 | Danek Medical, Inc. | Top tightening clamp assembly for a spinal fixation system |
DE4307576C1 (en) * | 1993-03-10 | 1994-04-21 | Biedermann Motech Gmbh | Bone screw esp. for spinal column correction - has U=shaped holder section for receiving straight or bent rod |
US5437670A (en) | 1993-08-19 | 1995-08-01 | Danek Medical, Inc. | Attachment plate for top-tightening clamp assembly in a spinal fixation system |
CA2150797C (en) | 1993-10-08 | 2011-07-05 | Chaim Rogozinski | Spinal treatment and long bone fixation apparatus and method |
US5628740A (en) | 1993-12-23 | 1997-05-13 | Mullane; Thomas S. | Articulating toggle bolt bone screw |
US5545166A (en) | 1994-07-14 | 1996-08-13 | Advanced Spine Fixation Systems, Incorporated | Spinal segmental reduction derotational fixation system |
FR2731344B1 (en) | 1995-03-06 | 1997-08-22 | Dimso Sa | SPINAL INSTRUMENTATION ESPECIALLY FOR A ROD |
US5591166A (en) | 1995-03-27 | 1997-01-07 | Smith & Nephew Richards, Inc. | Multi angle bone bolt |
US5569247A (en) | 1995-03-27 | 1996-10-29 | Smith & Nephew Richards, Inc. | Enhanced variable angle bone bolt |
US5643263A (en) * | 1995-08-14 | 1997-07-01 | Simonson; Peter Melott | Spinal implant connection assembly |
US5885286A (en) * | 1996-09-24 | 1999-03-23 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5797911A (en) | 1996-09-24 | 1998-08-25 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5735851A (en) | 1996-10-09 | 1998-04-07 | Third Millennium Engineering, Llc | Modular polyaxial locking pedicle screw |
US5725528A (en) | 1997-02-12 | 1998-03-10 | Third Millennium Engineering, Llc | Modular polyaxial locking pedicle screw |
US5800435A (en) | 1996-10-09 | 1998-09-01 | Techsys, Llc | Modular spinal plate for use with modular polyaxial locking pedicle screws |
US5964760A (en) | 1996-10-18 | 1999-10-12 | Spinal Innovations | Spinal implant fixation assembly |
WO1998025534A1 (en) * | 1996-12-12 | 1998-06-18 | Synthes Ag Chur | Device for connecting a longitudinal support to a pedicle screw |
US5782833A (en) * | 1996-12-20 | 1998-07-21 | Haider; Thomas T. | Pedicle screw system for osteosynthesis |
US6248105B1 (en) * | 1997-05-17 | 2001-06-19 | Synthes (U.S.A.) | Device for connecting a longitudinal support with a pedicle screw |
IES970411A2 (en) | 1997-06-03 | 1997-12-03 | Tecos Holdings Inc | Pluridirectional and modulable vertebral osteosynthesis device of small overall size |
US5947967A (en) | 1997-10-22 | 1999-09-07 | Sdgt Holdings, Inc. | Variable angle connector |
US6010503A (en) * | 1998-04-03 | 2000-01-04 | Spinal Innovations, Llc | Locking mechanism |
US6113601A (en) | 1998-06-12 | 2000-09-05 | Bones Consulting, Llc | Polyaxial pedicle screw having a loosely coupled locking cap |
US6565565B1 (en) * | 1998-06-17 | 2003-05-20 | Howmedica Osteonics Corp. | Device for securing spinal rods |
US5904683A (en) | 1998-07-10 | 1999-05-18 | Sulzer Spine-Tech Inc. | Anterior cervical vertebral stabilizing device |
AU751174B2 (en) | 1998-09-11 | 2002-08-08 | Synthes Gmbh | Variable angle spinal fixation system |
US6352537B1 (en) | 1998-09-17 | 2002-03-05 | Electro-Biology, Inc. | Method and apparatus for spinal fixation |
US6355038B1 (en) | 1998-09-25 | 2002-03-12 | Perumala Corporation | Multi-axis internal spinal fixation |
US5910142A (en) | 1998-10-19 | 1999-06-08 | Bones Consulting, Llc | Polyaxial pedicle screw having a rod clamping split ferrule coupling element |
US6296642B1 (en) * | 1998-11-09 | 2001-10-02 | Sdgi Holdings, Inc. | Reverse angle thread for preventing splaying in medical devices |
US6050997A (en) | 1999-01-25 | 2000-04-18 | Mullane; Thomas S. | Spinal fixation system |
US6315779B1 (en) | 1999-04-16 | 2001-11-13 | Sdgi Holdings, Inc. | Multi-axial bone anchor system |
US6183473B1 (en) | 1999-04-21 | 2001-02-06 | Richard B Ashman | Variable angle connection assembly for a spinal implant system |
US6210413B1 (en) | 1999-04-23 | 2001-04-03 | Sdgi Holdings, Inc. | Connecting apparatus using shape-memory technology |
US6248107B1 (en) | 2000-03-15 | 2001-06-19 | Sdgi Holdings, Inc. | System for reducing the displacement of a vertebra |
US6562038B1 (en) | 2000-03-15 | 2003-05-13 | Sdgi Holdings, Inc. | Spinal implant connection assembly |
US6524315B1 (en) | 2000-08-08 | 2003-02-25 | Depuy Acromed, Inc. | Orthopaedic rod/plate locking mechanism |
US6485491B1 (en) | 2000-09-15 | 2002-11-26 | Sdgi Holdings, Inc. | Posterior fixation system |
US6520962B1 (en) | 2000-10-23 | 2003-02-18 | Sdgi Holdings, Inc. | Taper-locked adjustable connector |
US6685705B1 (en) | 2000-10-23 | 2004-02-03 | Sdgi Holdings, Inc. | Six-axis and seven-axis adjustable connector |
US6626906B1 (en) | 2000-10-23 | 2003-09-30 | Sdgi Holdings, Inc. | Multi-planar adjustable connector |
US8377100B2 (en) * | 2000-12-08 | 2013-02-19 | Roger P. Jackson | Closure for open-headed medical implant |
DE10064571C2 (en) * | 2000-12-22 | 2003-07-10 | Juergen Harms | fixing |
DE10115014A1 (en) * | 2001-03-27 | 2002-10-24 | Biedermann Motech Gmbh | anchoring element |
US6478798B1 (en) | 2001-05-17 | 2002-11-12 | Robert S. Howland | Spinal fixation apparatus and methods for use |
US6770075B2 (en) | 2001-05-17 | 2004-08-03 | Robert S. Howland | Spinal fixation apparatus with enhanced axial support and methods for use |
FR2829014B1 (en) | 2001-09-03 | 2005-04-08 | Stryker Spine | SPINAL OSTEOSYNTHESIS SYSTEM COMPRISING A SUPPORT SKATE |
US6783527B2 (en) | 2001-10-30 | 2004-08-31 | Sdgi Holdings, Inc. | Flexible spinal stabilization system and method |
DE10157969C1 (en) * | 2001-11-27 | 2003-02-06 | Biedermann Motech Gmbh | Element used in spinal and accident surgery comprises a shaft joined to a holding element having a U-shaped recess with two free arms having an internal thread with flanks lying at right angles to the central axis of the holding element |
DE10157814B4 (en) * | 2001-11-27 | 2004-12-02 | Biedermann Motech Gmbh | Closure device for securing a rod-shaped element in a holding element connected to a shaft |
DE10164323C1 (en) * | 2001-12-28 | 2003-06-18 | Biedermann Motech Gmbh | Bone screw has holder element joined to shaft and possessing two free arms , with inner screw, slot, external nut, cavity and shoulder cooperating with attachment |
US6641586B2 (en) * | 2002-02-01 | 2003-11-04 | Depuy Acromed, Inc. | Closure system for spinal fixation instrumentation |
US7066937B2 (en) * | 2002-02-13 | 2006-06-27 | Endius Incorporated | Apparatus for connecting a longitudinal member to a bone portion |
US6837889B2 (en) * | 2002-03-01 | 2005-01-04 | Endius Incorporated | Apparatus for connecting a longitudinal member to a bone portion |
US7766915B2 (en) * | 2004-02-27 | 2010-08-03 | Jackson Roger P | Dynamic fixation assemblies with inner core and outer coil-like member |
US7087057B2 (en) * | 2003-06-27 | 2006-08-08 | Depuy Acromed, Inc. | Polyaxial bone screw |
TW200518711A (en) * | 2003-12-11 | 2005-06-16 | A Spine Holding Group Corp | Rotation buckling ball-head spine restoring equipment |
WO2005102195A1 (en) | 2004-04-20 | 2005-11-03 | Allez Spine, Llc | Pedicle screw assembly |
US8267969B2 (en) * | 2004-10-20 | 2012-09-18 | Exactech, Inc. | Screw systems and methods for use in stabilization of bone structures |
US10076361B2 (en) * | 2005-02-22 | 2018-09-18 | Roger P. Jackson | Polyaxial bone screw with spherical capture, compression and alignment and retention structures |
EP1795134B1 (en) * | 2005-11-17 | 2008-08-06 | BIEDERMANN MOTECH GmbH | Polyaxial screw for flexible rod |
EP1935358B1 (en) * | 2006-12-22 | 2012-09-26 | Biedermann Technologies GmbH & Co. KG | Bone anchoring device |
-
2005
- 2005-04-22 US US11/112,221 patent/US7794481B2/en active Active
-
2006
- 2006-04-19 AU AU2006240091A patent/AU2006240091A1/en not_active Abandoned
- 2006-04-19 CA CA002605340A patent/CA2605340A1/en not_active Abandoned
- 2006-04-19 EP EP06750771A patent/EP1885265A2/en not_active Withdrawn
- 2006-04-19 WO PCT/US2006/014814 patent/WO2006115954A2/en active Application Filing
- 2006-04-19 JP JP2008507852A patent/JP2008536637A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2006115954A3 (en) | 2007-01-11 |
EP1885265A2 (en) | 2008-02-13 |
WO2006115954A2 (en) | 2006-11-02 |
AU2006240091A1 (en) | 2006-11-02 |
US20060241595A1 (en) | 2006-10-26 |
JP2008536637A (en) | 2008-09-11 |
US7794481B2 (en) | 2010-09-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7794481B2 (en) | Force limiting coupling assemblies for spinal implants | |
US7625394B2 (en) | Coupling assemblies for spinal implants | |
US7575587B2 (en) | Top-tightening side-locking spinal connector assembly | |
US8029546B2 (en) | Variable angle offset spinal connector assembly | |
US7967849B2 (en) | Adjustable multi-axial spinal coupling assemblies | |
US7585299B2 (en) | Dorsal adjusting spinal connector assembly | |
EP2374424B1 (en) | Dynamic stabilization system using polyaxial screws | |
JP5078900B2 (en) | System for stabilizing bone parts | |
US20030055426A1 (en) | Biased angulation bone fixation assembly | |
US7909855B2 (en) | Orthopedic implant assembly | |
CA2536243A1 (en) | Systems and methods for positioning implants relative to bone anchors in surgical approaches to the spine | |
AU2013200841A1 (en) | Coupling assemblies for spinal implants | |
KR200370921Y1 (en) | Pedicle Screw System |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |