Spinal implant system and method

Patent metadata

Field	Value
Publication number	US-10307187-B2
Application number	US-201615561280-A
Country	US
Kind code	B2
Filing date	Mar 22, 2016
Priority date	Mar 26, 2015
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

An interspinous implant comprises a first member and a second member. The members define a pathway. A third member is movable along the pathway relative to the first member and the second member. Systems and methods are disclosed.

First claim

What is claimed is:

1. An interspinous implant comprising:
a first member extending along a longitudinal axis between opposite first and second ends, the first member comprising an inner surface defining a slot extending from the first end to the second end;
a second member extending between opposite first and second ends, the second member comprising an inner surface defining a slot extending from the first end of the second member to the second end of the second member, at least one of the members comprising an opening that extends transverse to the longitudinal axis; and
a third member positioned within the slots and movable relative to the first member and the second member along the longitudinal axis,
wherein a top surface of the third member and the inner surfaces define a first cavity configured for disposal of a first spinous process and a bottom surface of the third member and the inner surfaces define a second cavity configured for disposal of a second spinous process.

2. An interspinous implant as recited in claim 1 , wherein the members comprise a plate including a vertebral engaging surface that defines a tissue mating curvature.

3. An interspinous implant as recited in claim 2 , wherein the curvature includes an undulating profile.

4. An interspinous implant as recited in claim 1 , wherein the members comprise a plate including an anterior surface and a posterior surface, the anterior surface defining a tissue mating curvature engageable with tissue of a facet joint.

5. An interspinous implant as recited in claim 1 , further comprising a trans-facet joint fastener configured for disposal with the opening.

6. An interspinous implant as recited in claim 1 , wherein the members are relatively movable and selectively adjustable to engage vertebrae.

7. An interspinous implant as recited in claim 1 , wherein the first member and the second member are separate and connected via the third member.

8. An interspinous implant as recited in claim 1 , wherein the third member is movable along the longitudinal axis in a cranial-caudal orientation.

9. An interspinous implant as recited in claim 1 , wherein the third member includes a first key movable in the slot of the first member and a second key movable in the slot of the second member.

10. An interspinous implant as recited in claim 1 , wherein the opening is oriented along a trans-facet fastener pathway.

11. An interspinous implant as recited in claim 1 , wherein the slots are arcuate, the third member including enlarged edge portions locked with and movable in the slots.

12. An interspinous implant as recited in claim 1 , wherein the opening is oriented along a direct posterior-anterior fastener pathway.

13. An interspinous implant as recited in claim 1 , wherein the opening is oriented along a facet-pedicle fastener pathway.

14. An interspinous implant as recited in claim 1 , wherein the bottom surface of the third member comprises an arcuate portion that defines a portion of the second cavity.

15. An interspinous implant comprising:
a first member extending between opposite first and second ends, the first member defining an opening and including an inner surface defining a slot that extends from the first end to the second end;
a second member extending between opposite first and second ends, the second member defining an opening and including an inner surface defining a slot that extends from the first end of the second member to the second end of the second member, the slots defining an arcuate track and the members including a vertebral engaging surface that defines a tissue mating curvature; and
an intermediate member movable along the track relative to the first member and the second member,
wherein a top surface of the intermediate member and the inner surfaces define a first cavity configured for disposal of a first spinous process and a bottom surface of the intermediate member and the inner surfaces define a second cavity configured for disposal of a second spinous process.

16. An interspinous implant as recited in claim 15 , wherein the members are relatively movable and selectively adjustable to engage vertebrae and/or orient the openings.

17. An interspinous implant as recited in claim 15 , wherein the members include a posterior surface opposite the vertebral engaging surface, the intermediate member having a protrusion that extends outwardly from the posterior surface.

18. A plate comprising:
a first member extending between opposite first and second ends, the first member including an inner surface that defines a slot that extends from the first end to the second end;
a second member extending between opposite first and second ends, the second member including an inner surface that defines a slot that extends from the first end of the second member to the second end of the second member; and
an intermediate member extending between opposite first and second ends, the intermediate member comprising side surfaces that are each movably disposed within one of the slots,
a top surface of the intermediate member and the inner surfaces defining a first cavity configured for disposal of a first spinous process and a bottom surface of the intermediate member and the inner surfaces defining a second cavity configured for disposal of a second spinous process,
the plate including a vertebral engaging surface that defines a tissue mating curvature.

19. A plate as recited in claim 18 , wherein the curvature includes an undulating profile.

20. A plate as recited in claim 18 , wherein the plate defines a longitudinal axis and at least one fastener opening being oriented in an angular range of 0 through 40 degrees relative to the longitudinal axis.

Assignees

• Warsaw Orthopedic Inc
• Warsaw Othopedic Inc

Inventors

• Lange Eric C
• Davis Darren L

Classifications

• A61B17/7068

  Devices comprising separate rigid parts, assembled in situ, to bear on each side of spinous processes; Tools therefor · CPC title

• A61B17/7067 Primary

  Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor · CPC title