INTERSPINOUS VERTEBRAL STABILIZATION DEVICES

• US 20160045230A1
• Filed: 10/29/2015
• Published: 02/18/2016
• Est. Priority Date: 09/27/2005
• Status: Active Grant

• Current Assignee: Xtant Medical, Inc. (OrbiMed Advisors LLC (China))
• Original Assignee: Paradigm Spine, LLC (Surgalign Holdings, Inc.)
• Inventors: LOWERY, Gary L., TRAUTWEIN, Frank T., EISEN, Guntmar H., VISCOGLIOSI, Marc R.
• Granted Patent: US 10,363,071 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/7055 connected to sacrum, pelvis or skull
• CPC Class Codes: A61B 17/7067 Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor
• CPC Class Codes: A61B 17/7068 Devices comprising separate rigid parts, assembled in situ, to bear on each side of spinous processes; Tools therefor
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455

Abstract

The present invention provides interspinous vertebral and lumbosacral stabilization devices, and methods of using these devices for treating spinal instability conditions. The invention includes interspinous vertebral stabilization devices adapted for placement between the spinous processes of two or more adjacent vertebrae. The invention also includes lumbar stabilization devices adapted to be placed between a lumbar vertebra and an adjacent vertebra, including the first sacral vertebra (S1), to stabilize the lumbosacral region of a patient, and method for using such devices.

Claims

1. An implantable device for stabilizing a lumbar region of a patient, comprising:

a unitary bracket for stabilizing a lumbar vertebra, the unitary bracket including;

a platform configured for placement under a spinous process of the lumbar vertebra, the platform including an upper surface, a lower surface, and a sidewall extending in between the upper and lower surfaces; and

an anchor portion extending from the lower surface of the platform for securing the unitary bracket between the lumbar vertebra and a sacrum.

2. The device of claim 1, wherein the lumbar vertebra is a fifth lumbar vertebra (L5).

3. The device of claim 1, wherein the platform extends laterally with respect to the anchor portion.

4. The device of claim 1, wherein the upper surface of the platform includes a bone-contacting region for placement of the spinous process thereon.

5. The device of claim 4, wherein the bone-contacting region is a contoured surface region.

6. The device of claim 5, wherein the contoured surface region includes a saddle region.

7. The device of claim 6, wherein the platform includes wing-like projections defining the saddle region.

8. The device of claim 7, further comprising a locking cap for placement over the wing-like projections.

9. The device of claim 8, further comprising a bone fastener for insertion through the locking cap and wing-like projections.

10. The device of claim 7, further comprising a laminar hook attachable to the wing-like projections.

11. The device of claim 10, wherein the laminar hook is pivotable with respect to the wing-like projections.

12. The device of claim 10, further comprising rotatable arms for connecting the laminar hook to the wing-like projections.

13. The device of claim 10, wherein the laminar hook includes a pivotable joint.

14. The device of claim 10, wherein the laminar hook includes a hinged joint.

15. The device of claim 1, further comprising a channel extending from the sidewall of the platform to an opening on the upper surface thereof.

16. The device of claim 15, further comprising a flexible fixation element for securing the spinous process to the platform, the flexible fixation element being configured to be placed through the channel of the platform.

17. The device of claim 1, further comprising surface modifications for enhanced attachment to bone tissue.

18. The device of claim 17, wherein the surface modifications are selected from the group consisting of teeth, barbs, beads, and surface roughening.

19. The device of claim 1, wherein the device further includes a biologically active material to promote tissue growth after implantation.

20. The device of claim 19, wherein the biologically active material is contained in a coating on the device.

21. The device of claim 19, wherein the device is porous and the biologically active material is contained in the pores of the device.

22. The device of claim 1, wherein the device is comprised of a biocompatible metal or polymer.

23. The device of claim 1, wherein the unitary bracket is rigid.

24. The device of claim 1, wherein the unitary bracket is semi-rigid.

25. The device of claim 1, wherein the unitary bracket includes a neck region between the platform and the anchor portion, the neck region being formed of a flexible material.

26. The device of claim 1, wherein the anchor portion comprises a bone plate.