Intervertebral implants, systems, and methods of use

Patent metadata

Field	Value
Publication number	US-9848992-B2
Application number	US-201514954412-A
Country	US
Kind code	B2
Filing date	Nov 30, 2015
Priority date	Dec 21, 2010
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

An intervertebral implant frame that is configured to be attached to a spacer body can include a pair of arms that extend longitudinally from a support member such that the arms extend substantially around the spacer body. The arms may be configured to expand, crimp, or otherwise engage the spacer body to thereby hold the spacer body to the frame. The spacer body may be made from bone graft.

First claim

What is claimed:

1. An intervertebral implant frame comprising:
a support member including a body that defines an outer surface, an inner surface spaced from the outer surface in a longitudinal direction, and at least two fixation element receiving apertures that extend through the body;
a first arm that extends from the support member to a first terminal end, the first arm including a first inner spacer contacting surface, and a first outer surface opposite the first inner spacer contacting surface;
a second arm that extends from the support member to a second terminal end, the second arm including a second inner spacer contacting surface spaced from the first inner spacer contacting surface along a lateral direction that is perpendicular to the longitudinal direction, and a second outer surface opposite the second inner spacer contacting surface; and
wherein the inner surface, the first inner spacer contacting surface, and the second inner spacer contacting surface combine to define a void that is configured to receive a spacer body, the void defining a first width measured from the first inner spacer contacting surface to the second inner spacer contacting surface along the lateral direction at a first position, the void defining a second width measured from the first inner spacer contacting surface to the second inner spacer contacting surface along the lateral direction at a second position, and the void defining a third width measured from the first inner spacer contacting surface to the second inner spacer contacting surface along the lateral direction at a third position,
wherein the first width is less than the second width, the third width is greater than the first width, the second position is between the first position and the support member with respect to the longitudinal direction, the first position is between the third position and the support member with respect to the longitudinal direction, and the support member defines a fourth width measured in the lateral direction, the first and second arms define a fifth width measured between a first location on the first outer surface and a second location on the second outer surface in the lateral direction, the first and second locations being located on a plane that 1) is defined by the longitudinal direction and the lateral direction and 2) passes through at least one of the at least two fixation element receiving apertures, and the fourth width is greater than each of the first, second, third, and fifth widths.

2. The intervertebral implant frame of claim 1 , wherein the fifth width of the first and second arms is measured at the second position.

3. The intervertebral implant frame of claim 1 , wherein the support member includes a retention member that extends from the inner surface in the longitudinal direction, the retention member positioned between the first arm and the second arm with respect to the lateral direction.

4. The intervertebral implant frame of claim 3 , wherein the retention member is a spike that is configured to retain the spacer body when the spacer body is being supported by the intervertebral implant frame.

5. The intervertebral implant frame of claim 3 , wherein the retention member is positioned between two of the at least two fixation element receiving apertures with respect to the lateral direction.

6. The intervertebral implant frame of claim 1 , wherein the support member includes an upper surface and a lower surface, the upper surface spaced from the lower surface in a transverse direction that is perpendicular to both the longitudinal and lateral directions, the upper surface including a first portion that is parallel to the lateral direction, the lower surface including a second portion that is convex, and both the first portion and the second portion are aligned with respect to the transverse direction.

7. The intervertebral implant frame of claim 6 , wherein the at least two fixation element receiving apertures include a first aperture, a second aperture, a third aperture, and a fourth aperture.

8. The intervertebral implant frame of claim 7 , wherein both the second aperture and the third aperture are positioned between the first aperture and the fourth aperture with respect to the lateral direction, both the first aperture and the fourth aperture are angled in the transverse direction, and both the second aperture and the third aperture are angled in a direction opposite the transverse direction.

9. The intervertebral implant of claim 6 , wherein the plane is equidistant from the upper surface and the lower surface of the support member in the transverse direction.

10. The intervertebral implant frame of claim 1 , wherein at least a portion of the first inner spacer contacting surface is straight.

11. The intervertebral implant frame of claim 10 , wherein at least a portion of the second inner spacer contacting surface is straight.

12. The intervertebral implant of claim 1 , wherein the fourth width is greater than all of the widths of the first arm and the second arm.

13. An intervertebral implant frame comprising:
a support member including a body that defines an outer surface, an inner surface spaced from the outer surface in a longitudinal direction, the inner surface defining a retention member that is monolithic with the body of the support member and extends in a direction away from the outer surface in the longitudinal direction, the retention member configured to retain a spacer body when the spacer body is coupled to the intervertebral implant frame, and at least two fixation element receiving apertures that extend through the body from the outer surface to the inner surface;
a first arm that extends from the support member, the first arm including a first inner spacer contacting surface; and
a second arm that extends from the support member, the second arm including a second inner spacer contacting surface spaced from the first inner spacer contacting surface along a lateral direction that is perpendicular to the longitudinal direction such that the retention member is positioned between the first arm and the second arm with respect to the lateral direction,
wherein the inner surface, the first inner spacer contacting surface, and the second inner spacer contacting surface together define a void configured to receive the spacer body.

14. The intervertebral implant frame of claim 13 , wherein the retention member is a spike that is configured to retain the spacer body when the spacer body is received in the void.

15. The intervertebral implant frame of claim 13 , wherein the retention member is positioned between two of the at least two fixation element receiving apertures with respect to the lateral direction.

16. The intervertebral implant frame of claim 13 , wherein the support member includes an upper surface and a lower surface, the upper surface spaced from the lower surface in a transverse direction that is perpendicular to both the longitudinal and lateral directions, the upper surface including a first portion that is parallel to the lateral direction, the lower surface including a second portion that is convex, and both the first portion and the second portion are aligned with respect to the transverse direction.

17. The intervertebral implant frame of claim 16 , wherein the at least two fixation element receiving apertures include a first aperture, a second aperture, a third aperture, and a fourth aperture, both the second aperture and the third aperture are positioned between the first aperture and the fourth aperture with respect to the lateral direction, both t

Assignees

• Depuy Synthes Products Inc

Inventors

• Mcdonough William P
• Strausbaugh William L
• Chronister Benjamin
• Pepe Thomas
• Coover Michael
• Coffman Katharine
• Kueenzi Thomas
• Chan Edwin
• Pakzaban Peyman
• Schmura Kurt

Classifications

• A61F2002/30576

  with extending fixation tabs · CPC title

• A61F2310/00131

  Tantalum or Ta-based alloys · CPC title

• A61F2002/30387

  Dovetail connection · CPC title

• A61F2310/00359

  Bone or bony tissue · CPC title

• A61F2002/4622

  having the shape of a forceps or a clamp · CPC title