Spinal fixation device

Patent metadata

Field	Value
Publication number	US-10292832-B2
Application number	US-201514936911-A
Country	US
Kind code	B2
Filing date	Nov 10, 2015
Priority date	Mar 14, 2013
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A spinal fixation device includes an outer housing and an end plate assembly coupled with the outer housing. The outer housing defines an aperture and a longitudinal axis. At least a portion of the end plate assembly is slidably received within the outer housing. The end plate assembly includes a first end plate configured to engage a vertebral body, wherein the end plate assembly is selectively movable between a first position in which the first end plate is spaced apart from the outer housing and a second position in which the first end plate is adjacent the outer housing. Further, the first end plate is selectively adjustable to an angular orientation of a plurality of angular orientations with respect to the longitudinal axis of the outer housing.

First claim

What is claimed is:

1. A spinal fixation device comprising:
an outer housing defining an aperture and a first longitudinal axis; and
an end plate assembly coupled with the outer housing, at least a portion of the end plate assembly slidably received within the outer housing, the end plate assembly including:
a first end plate configured to engage a vertebral body, wherein the end plate assembly is selectively movable between a first position in which the first end plate is spaced apart from the outer housing and a second position in which the first end plate is adjacent the outer housing, and the first end plate is selectively adjustable to an angular orientation of a plurality of angular orientations with respect to the first longitudinal axis of the outer housing, wherein the first end plate is pivotable about a pivot pin defining a second longitudinal axis.

2. The spinal fixation device according to claim 1 , wherein the end plate assembly includes first and second elongate members operatively coupled to the first end plate such that axial movement of the first and second elongate members in tandem causes axial displacement of the first end plate, and relative movement between the first and second elongate members transitions the first end plate from a first angular orientation to a second angular orientation.

3. The spinal fixation device according to claim 2 , further comprising a mounting assembly operatively supporting the first and second elongate members in the outer housing.

4. The spinal fixation device according to claim 3 , wherein the mounting assembly is releasably secured with the outer housing.

5. The spinal fixation device according to claim 3 , wherein the mounting assembly includes a retaining housing and first and second rotatable members rotatably supported in the retaining housing, the first and second rotatable members operatively coupled with the first and second elongate members of the end plate assembly.

6. The spinal fixation device according to claim 5 , wherein the first and second rotatable members of the mounting assembly are spaced apart from each other to define a gap therebetween.

7. The spinal fixation device according to claim 6 , wherein the outer housing defines a plurality of bores, at least one bore of the plurality of bores in communication with the gap defined between the first and second rotatable members of the mounting assembly.

8. The spinal fixation device according to claim 7 , wherein the plurality of bores are circumferentially arranged about the outer housing.

9. The spinal fixation device according to claim 7 , wherein the plurality of bores are arranged along a length of the outer housing.

10. The spinal fixation device according to claim 5 , wherein each of the first and second rotatable members of the mounting assembly includes circumferentially arranged teeth opposing each other.

11. The spinal fixation device according to claim 5 , wherein the first rotatable member of the mounting assembly includes inner threads in a first orientation and the second rotatable member of the mounting assembly includes inner threads in a second orientation opposite to the first orientation.

12. The spinal fixation device according to claim 1 , wherein the first longitudinal axis is different from the second longitudinal axis.

13. A spinal fixation device comprising:
a housing defining an aperture;
an end plate assembly operatively coupled with the housing, a portion of the end plate assembly pivotable about a pivot pin defining a longitudinal axis, at least a portion of the end plate assembly slidably received within the housing; and
first and second rotatable members operatively coupled with the end plate assembly such that rotation of the first and second rotatable members transitions the spinal fixation device between an expanded state and a contracted state, wherein the first and second rotatable members are configured to engage a first instrument to transition the spinal fixation device between the expanded state and the contracted state, wherein one of the first or second rotatable members is configured to engage a second instrument to adjust an angular orientation of the portion of the end plate assembly.

14. The spinal fixation device according to claim 13 , wherein the first and second rotatable members are rotatable independently of each other.

15. The spinal fixation device according to claim 14 , wherein the first and second rotatable members are rotatable in opposite directions.

16. The spinal fixation device according to claim 15 , wherein the first rotatable member is rotatable to selectively adjust an angular orientation of a portion of the spinal fixation device.

17. The spinal fixation device according to claim 13 , wherein the first and second rotatable members are rotatable about a second longitudinal axis defined by the housing.

18. The spinal fixation device according to claim 13 , wherein at least one of the first or second rotatable members includes an engaging structure configured to engage an adjusting driver inserted into the housing.

19. The spinal fixation device according to claim 13 , wherein the first and second rotatable members are configured for concomitant rotation.

20. The spinal fixation device according to claim 13 , wherein the first and second rotatable members are spaced apart along a second longitudinal axis defined by the housing.

21. An adjustable spinal implant comprising:
a housing positionable between adjacent vertebrae;
a proximal region of the adjustable spinal implant having a first height;
a distal region of the adjustable spinal implant having a second height; and
an end plate assembly coupled with the housing, the end plate assembly including an end plate configured to engage a vertebral body, and first and second elongate members pivotably secured to the end plate about respective pins such that axial movement of the first and second elongate members in tandem adjusts the first height and the second height, and relative movement between the first and second elongate members adjusts one of the first height or the second height such that the proximal region is adjustable independently of the distal region, the housing attachable to a first instrument having a first rotatable member rotatable to cause axial movement of the first and second elongate members in tandem, the housing attachable to a second instrument having a second rotatable member rotatable to cause relative movement between the first and second elongate members.

22. The adjustable spinal implant according to claim 21 , wherein the housing includes first and second rotatable portions configured to operatively engage at least one of the first or second rotatable members of the first or second instrument.

23. The adjustable spinal implant according to claim 22 , wherein the first and second rotatable portions are rotatable independently of each other.

24. The adjustable spinal implant according to claim 22 , wherein the first and second rotatable portions are spaced apart along a longitudinal axis defined by the housing.

25. The adjustable spinal implant according to claim 21 , further comprising a mounting assembly operatively supporting the first and second elongate members in the housing.

26. The adjustable spinal implant according to claim 25 , wherein the mounting assembly is releasably secured with the housing.

27. The ad

Assignees

• Ohio State Innovation Foundation
• K2M Inc

Inventors

• Sutterlin Iii Chester Evan
• Mendel Ehud
• Finn Michael
• Boyd Clint
• Jones Scott
• Wallenstein Todd
• Buchowski Jacob M

Classifications

• A61F2002/30495

  using a locking ring · CPC title

• A61F2/4603

  for insertion or extraction of endoprosthetic joints or of accessories thereof · CPC title

• A61F2/4611

  of spinal prostheses · CPC title

• A61F2002/30405

  made by screwing complementary threads machined on the parts themselves · CPC title

• A61F2002/30601

  telescopic · CPC title