CA2625305A1 - System and method for dynamic vertebral stabilization - Google Patents
System and method for dynamic vertebral stabilization Download PDFInfo
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- CA2625305A1 CA2625305A1 CA002625305A CA2625305A CA2625305A1 CA 2625305 A1 CA2625305 A1 CA 2625305A1 CA 002625305 A CA002625305 A CA 002625305A CA 2625305 A CA2625305 A CA 2625305A CA 2625305 A1 CA2625305 A1 CA 2625305A1
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- coupling
- couplings
- vertebra
- stabilization system
- anchoring
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- 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
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7023—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a pivot joint
-
- 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
- A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
-
- 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
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
- A61B17/7028—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form the flexible part being a coil spring
-
- 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
- A61B17/7002—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
- A61B17/7041—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
Abstract
An intervertebral stabilization device (12, 170) and method is disclosed. The device (12, 170) preferably includes a planar spring (20, 180) enclosed within a housing (22, 172) . The housing (122, 172) is joined to an articulation component (24, 25, 174, 175) at either end, and the articulation components (24, 25, 174, 175) have couplings (28, 178) connectable to anchoring components (19) which are securable to adjacent vertebrae. The planar spring (20, 180) can flex and retract providing relative motion between the adjacent vertebrae. The articulation components (24, 25, 174, 175) are ball and socket joints which allow the entire assembly to flexibly follow the curvature of the spine. A fusion rod (162) with articulation components and couplings (164) at either end may be substituted for the spring device. The couplings enable interchangeability between a fusion rod (162) assembly and spring assembly (12, 170) , so that dynamic stabilization can occur at one vertebral level and fusion at the adjacent vertebral level. An overhung spring assembly (250) with a sideways displaced housing (254) which allows for a shorter pedicle to pedicle displacement is also disclosed.
Claims (42)
1. A stabilization system for controlling relative motion between a first vertebra and a second vertebra, the stabilization system comprising:
a first stabilizer including:
a first coupling adapted to be attached to a first anchoring member;
a second coupling adapted to be attached to a second anchoring member; and a resilient member configured to be coupled to the first and second couplings to transmit resilient force between the first and second couplings, the resilient member including a planar spring, wherein at least a portion of the planar spring flexes out-of-plane in response to relative motion between the vertebrae.
a first stabilizer including:
a first coupling adapted to be attached to a first anchoring member;
a second coupling adapted to be attached to a second anchoring member; and a resilient member configured to be coupled to the first and second couplings to transmit resilient force between the first and second couplings, the resilient member including a planar spring, wherein at least a portion of the planar spring flexes out-of-plane in response to relative motion between the vertebrae.
2. The stabilization system of claim 1, wherein the first stabilizer further includes a casing including a hollow first member and a hollow second member, wherein the resilient member is positioned within a cavity defined by engagement of the first and second hollow members.
3. The stabilization system of claim 2, wherein the resilient member is positioned inside the casing such that the casing limits relative motion of the vertebrae by limiting deflection of the planar spring.
4. The stabilization system of claim 1, further comprising the first anchoring member and the second anchoring member.
5. The stabilization system of claim 4, wherein each of the first and second anchoring members includes a yoke polyaxially coupled to a fixation member implantable in a portion of either the first or second vertebra.
6. The stabilization system of claim 1, further comprising a first rigid connector including first and second couplings adapted to be attached to one of the first and second anchoring members, wherein the couplings are substantially rigidly connected together.
7. The stabilization system of claim 1, wherein the path followed by the planar spring is generally spiral-shaped, wherein the planar spring includes a central portion attached to the first coupling and a peripheral portion attached to the second coupling.
8. The stabilization system of claim 1, wherein the first stabilizer further includes a first articulation component configured to articulate to permit polyaxial relative rotation between one of the first or second couplings.
9. The stabilization system of claim 8, wherein the first articulation component includes a semispherical surface and a socket within which the semispherical surface is rotatable to permit polyaxial motion between the resilient member and the first anchoring member.
10. The stabilization system of claim 1, wherein the resilient member is coupled to the first and second couplings such that the resilient member is able to urge the first and second couplings to move closer together and is also able to urge the couplings to move further apart.
11. The stabilization system of claim 1, further comprising a second component comprising a third coupling and a fourth coupling, wherein the third coupling is adapted to be attached to the first anchoring member such that the first anchoring member is capable of simultaneously retaining the first and third couplings.
12. The stabilization system of claim 11, wherein the second component includes a rigid connector, wherein the third and fourth couplings are substantially rigidly connected together.
13. The stabilization system of claim 11, wherein the second component includes a second stabilizer comprising a second resilient member configured to exert resilient force between the third and fourth couplings.
14. A stabilization system for controlling relative motion between a first vertebra and a second vertebra, the stabilization system comprising:
a first stabilizer including:
a first coupling adapted to rest within a yoke of a first anchoring member;
a second coupling adapted to rest within a yoke of a second anchoring member;
a resilient member coupled to the first and second couplings to transmit resilient force between the first and second couplings, the resilient member including a planar spring, wherein at least a portion of the planar spring flexes out-of-plane in response to relative motion between the vertebrae; and a first articulation component configured to articulate to permit relative rotation between the first stabilizer and one of the first or second couplings.
a first stabilizer including:
a first coupling adapted to rest within a yoke of a first anchoring member;
a second coupling adapted to rest within a yoke of a second anchoring member;
a resilient member coupled to the first and second couplings to transmit resilient force between the first and second couplings, the resilient member including a planar spring, wherein at least a portion of the planar spring flexes out-of-plane in response to relative motion between the vertebrae; and a first articulation component configured to articulate to permit relative rotation between the first stabilizer and one of the first or second couplings.
15. The stabilization system of claim 14, further comprising a second component including a third coupling and a fourth coupling, wherein the third coupling is adapted to be attached to the first anchoring member such that the first anchoring member is capable of simultaneously retaining the first and third couplings.
16. The stabilization system of claim 15, wherein the second component includes a rigid connector, wherein the third and fourth couplings are substantially rigidly connected together.
17. The stabilization system of claim 15, wherein the second component includes a second stabilizer having a second resilient member configured to exert resilient force between the third and fourth couplings.
18. The stabilization system of claim 14, wherein the first stabilizer further includes a casing comprising a hollow first member and a hollow second member, wherein the resilient member is positioned within a cavity defined by engagement of the first and second hollow members.
19. The stabilization system of claim 14, wherein the yoke of each of the first and second anchoring members is polyaxially coupled to a fixation member implantable in a corresponding vertebra.
20. The stabilization system of claim 14, wherein the first articulation component includes a semispherical surface and a socket within which the semispherical surface is rotatable to permit polyaxial motion between the resilient member and the first anchoring member.
21. The stabilization system of claim 14, wherein the resilient member is coupled to the first and second couplings such that the resilient member is able to urge the first and second couplings to move closer together and is also able to urge the couplings to move further apart.
22. A stabilization system for controlling relative motion between a first vertebra and a second vertebra, the stabilization system comprising:
a first stabilizer including:
a first coupling adapted to be attached to a first anchoring member;
a second coupling adapted to be attached to a second anchoring member;
a resilient member configured to be coupled to the first and second couplings to transmit resilient force between the first and second couplings, the resilient member including a planar spring, wherein at least a portion of the planar spring flexes out-of-plane in response to relative motion between the vertebrae;
a first articulation component configured to articulate to permit relative rotation between the first and second couplings; and a first rigid connector including third and fourth couplings adapted to be attached to the first and second anchoring members, wherein the third and fourth couplings are substantially rigidly connected together.
a first stabilizer including:
a first coupling adapted to be attached to a first anchoring member;
a second coupling adapted to be attached to a second anchoring member;
a resilient member configured to be coupled to the first and second couplings to transmit resilient force between the first and second couplings, the resilient member including a planar spring, wherein at least a portion of the planar spring flexes out-of-plane in response to relative motion between the vertebrae;
a first articulation component configured to articulate to permit relative rotation between the first and second couplings; and a first rigid connector including third and fourth couplings adapted to be attached to the first and second anchoring members, wherein the third and fourth couplings are substantially rigidly connected together.
23. The stabilization system of claim 22, wherein each of the first and second anchoring members includes a yoke polyaxially coupled to a fixation member implantable in a corresponding vertebra, wherein the first coupling is adapted to rest within the yoke of the first anchoring member, and the second coupling is adapted to rest within the yoke of the second anchoring member.
24. The stabilization system of claim 22, wherein the first stabilizer further includes a casing comprising a hollow first member and a hollow second member, wherein the resilient member is positioned within a cavity defined by engagement of the first and second hollow members.
25. The stabilization system of claim 22, wherein the first articulation component includes a semispherical surface and a socket within which the semispherical surface is rotatable to permit polyaxial motion between the resilient member and the first anchoring member.
26. The stabilization system of claim 22, wherein the resilient member is coupled to the first and second couplings such that the resilient member is able to urge the first and second couplings to move closer together and is also able to urge the couplings to move further apart.
27. The stabilization system of claim 22, further comprising a second component comprising a fifth coupling and a sixth coupling, wherein the fifth coupling is adapted to be attached to the first anchoring member such that the first anchoring member is capable of simultaneously retaining the first and fifth couplings.
28. A method for controlling relative motion between a first vertebra and a second vertebra, the method comprising:
positioning a planar spring of a first stabilizer;
attaching a first coupling of the first stabilizer to the first vertebra; and attaching a second coupling of the first stabilizer to the second vertebra;
wherein, after attachment of the couplings to the vertebrae, the planar spring is positioned to transmit resilient force between the vertebrae via flexure of at least a portion of the planar spring out-of-plane.
positioning a planar spring of a first stabilizer;
attaching a first coupling of the first stabilizer to the first vertebra; and attaching a second coupling of the first stabilizer to the second vertebra;
wherein, after attachment of the couplings to the vertebrae, the planar spring is positioned to transmit resilient force between the vertebrae via flexure of at least a portion of the planar spring out-of-plane.
29. The method of claim 28, wherein the first stabilizer comprises a casing comprising a hollow first member and a hollow second member, wherein the planar spring is positioned within a cavity defined by engagement of the first and second hollow members, wherein the hollow members limit relative motion of the vertebrae by limiting deflection of the planar spring.
30. The method of claim 28, wherein, after attachment of the couplings to the vertebrae, the planar spring is able to urge the first and second vertebrae to move closer together and further apart.
31. The method of claim 28, wherein attaching the first coupling to the first vertebra includes attaching the first coupling to a yoke of a first anchoring member and implanting a fixation member of the first anchoring member in a pedicle of the first vertebra, and attaching the second coupling to the second vertebra includes attaching the second coupling to a yoke of a second anchoring member and implanting a fixation member of the second anchoring member in a pedicle of the second vertebra, wherein each yoke is polyaxially coupled to the corresponding fixation member.
32. The method of claim 28, wherein a path followed by the planar spring is generally spiral-shaped, and the planar spring comprises a central portion attached to the first coupling and a peripheral portion attached to the second coupling.
33. The method of claim 28, wherein the first stabilizer further comprises a first articulation component, wherein articulating the first articulation component permits polyaxial relative rotation between the stabilizer and one of the first or second couplings, wherein the first articulation component comprises a semispherical surface and a socket within which the semispherical surface is rotatable.
34. The method of claim 28, wherein attaching the first coupling to the first vertebra comprises securing a first anchoring member to the first vertebra and attaching the first coupling to the first anchoring member, the method further comprising attaching a third coupling of a second component to the first anchoring member such that the first anchoring member simultaneously retains the first and third couplings.
35. The method of claim 34, wherein the second component comprises a rigid connector further comprising a fourth coupling, wherein the third and fourth couplings are substantially rigidly connected together.
36. The method of claim 34, wherein the second component comprises a second stabilizer further comprising a fourth coupling and a second resilient member, wherein the second resilient member exerts resilient force between the third and fourth couplings.
37. A method for controlling relative motion between a first vertebra and a second vertebra, the method comprising:
selecting a component selected from the group consisting of a first stabilizer and a first rigid connector;
wherein the first stabilizer comprises a first coupling, a second coupling adapted to be attached to a second anchoring member secured to the second vertebra, a resilient member configured to transmit resilient force between the first and second couplings, and a first articulation component configured to articulate to permit relative rotation between the first and second couplings;
wherein the first rigid connector comprises a first coupling and a second coupling substantially rigidly connected to the first coupling;
attaching a first coupling of the selected component to a first anchoring member secured to the first vertebra; and attaching a second coupling of the selected component to a second anchoring member secured to the second vertebra.
selecting a component selected from the group consisting of a first stabilizer and a first rigid connector;
wherein the first stabilizer comprises a first coupling, a second coupling adapted to be attached to a second anchoring member secured to the second vertebra, a resilient member configured to transmit resilient force between the first and second couplings, and a first articulation component configured to articulate to permit relative rotation between the first and second couplings;
wherein the first rigid connector comprises a first coupling and a second coupling substantially rigidly connected to the first coupling;
attaching a first coupling of the selected component to a first anchoring member secured to the first vertebra; and attaching a second coupling of the selected component to a second anchoring member secured to the second vertebra.
38. The method of claim 37, wherein attaching the first coupling to the first vertebra includes attaching the first coupling to a yoke of the first anchoring member and implanting a fixation member of the first anchoring member in a pedicle of the first vertebra, and attaching the second coupling to the second vertebra comprises attaching the second coupling to a yoke of the second anchoring member and implanting a fixation member of the second anchoring member in a pedicle of the second vertebra, wherein each yoke is polyaxially coupled to the corresponding fixation member.
39. The method of claim 37, wherein the first stabilizer further includes a casing including a hollow first member and a hollow second member, wherein the resilient member is positioned within a cavity defined by engagement of the first and second hollow members.
40. The method of claim 37, wherein the first articulation component comprises a semispherical surface and a socket within which the semispherical surface is rotatable to permit polyaxial motion between the resilient member and the first anchoring member.
41. The method of claim 37, wherein, after attachment of the couplings to the vertebrae, the resilient member is able to urge the first and second vertebrae to move closer together and further apart.
42. The method of claim 37, further comprising attaching a fifth coupling of a second component to the first anchoring member such that the first anchoring member simultaneously retains the first and fifth couplings.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73226505P | 2005-10-31 | 2005-10-31 | |
US60/732,265 | 2005-10-31 | ||
US11/589,648 US8137385B2 (en) | 2005-10-31 | 2006-10-30 | System and method for dynamic vertebral stabilization |
US11/589,512 | 2006-10-30 | ||
US11/589,648 | 2006-10-30 | ||
US11/589,512 US8109973B2 (en) | 2005-10-31 | 2006-10-30 | Method for dynamic vertebral stabilization |
PCT/US2006/042351 WO2007053566A2 (en) | 2005-10-31 | 2006-10-31 | System and method for dynamic vertebral stabilization |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2625305A1 true CA2625305A1 (en) | 2007-05-10 |
CA2625305C CA2625305C (en) | 2011-04-05 |
Family
ID=38441848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2625305A Expired - Fee Related CA2625305C (en) | 2005-10-31 | 2006-10-31 | System and method for dynamic vertebral stabilization |
Country Status (6)
Country | Link |
---|---|
US (6) | US8137385B2 (en) |
EP (1) | EP1942836B1 (en) |
JP (1) | JP5072851B2 (en) |
AU (1) | AU2006308954B2 (en) |
CA (1) | CA2625305C (en) |
WO (1) | WO2007053566A2 (en) |
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2006
- 2006-10-30 US US11/589,648 patent/US8137385B2/en active Active
- 2006-10-30 US US11/589,512 patent/US8109973B2/en not_active Expired - Fee Related
- 2006-10-31 EP EP06827105.5A patent/EP1942836B1/en not_active Not-in-force
- 2006-10-31 JP JP2008538953A patent/JP5072851B2/en not_active Expired - Fee Related
- 2006-10-31 CA CA2625305A patent/CA2625305C/en not_active Expired - Fee Related
- 2006-10-31 WO PCT/US2006/042351 patent/WO2007053566A2/en active Application Filing
- 2006-10-31 AU AU2006308954A patent/AU2006308954B2/en not_active Ceased
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2012
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- 2012-01-24 US US13/356,947 patent/US8529603B2/en active Active
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US20120123479A1 (en) | 2012-05-17 |
EP1942836B1 (en) | 2013-06-05 |
WO2007053566A3 (en) | 2008-10-30 |
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US20070135815A1 (en) | 2007-06-14 |
JP2009513306A (en) | 2009-04-02 |
US9445846B2 (en) | 2016-09-20 |
EP1942836A2 (en) | 2008-07-16 |
US10004539B2 (en) | 2018-06-26 |
WO2007053566A2 (en) | 2007-05-10 |
US20070123866A1 (en) | 2007-05-31 |
US20120116461A1 (en) | 2012-05-10 |
AU2006308954A1 (en) | 2007-05-10 |
CA2625305C (en) | 2011-04-05 |
US8109973B2 (en) | 2012-02-07 |
EP1942836A4 (en) | 2012-03-07 |
US20140100614A1 (en) | 2014-04-10 |
US20160374729A1 (en) | 2016-12-29 |
US8623059B2 (en) | 2014-01-07 |
US8529603B2 (en) | 2013-09-10 |
JP5072851B2 (en) | 2012-11-14 |
AU2006308954B2 (en) | 2012-07-19 |
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