Interbody spacer

Patent metadata

Field	Value
Publication number	US-2016213486-A1
Application number	US-201615007523-A
Country	US
Kind code	A1
Filing date	Jan 27, 2016
Priority date	Jan 27, 2015
Publication date	Jul 28, 2016
Grant date	—

Abstract

An interbody spacer is disclosed and includes a body portion defining a longitudinal axis. The longitudinal axis includes a distal end portion, a proximal end portion, opposed side surfaces that extend between the distal and proximal end portions, and top and bottom surfaces configured and adapted to engage vertebral bodies. The body portion includes a cavity defined through the top and bottom surfaces that increases in width at a medial position thereof. The cavity is configured to retain biological material therein. A method of performing spinal surgery is also disclosed.

First claim

What is claimed is:

1 . An interbody spacer comprising:
a body portion defining a longitudinal axis, the body portion including a distal end portion, a proximal end portion, opposed side surfaces that extend between the distal and proximal end portions, and top and bottom surfaces configured and adapted to engage adjacent vertebral bodies, wherein the body portion includes a cavity defined between the top and bottom surfaces, the cavity increasing in width at a medial position thereof and configured to retain biological material therein.

2 . The interbody spacer according to claim 1 , wherein the cavity includes undercuts defined therein, the undercuts defining convex sidewalls.

3 . The interbody spacer according to claim 1 , wherein the cavity includes undercuts defined therein, the undercuts defining planar sidewalls.

4 . The interbody spacer according to claim 1 , wherein one of the top or bottom surfaces includes a plurality of substantially concentrically arranged ridges.

5 . The interbody spacer according to claim 4 , wherein the plurality of concentrically arranged ridges is a plurality of ring-shaped protrusions that defines a generally saw-tooth pattern in a radial direction.

6 . The interbody spacer according to claim 5 , wherein the plurality of concentrically arranged ridges includes a cross-hatched pattern defined therein adjacent the opposed side surfaces of the body portion.

7 . The interbody spacer according to claim 1 , wherein the proximal end portion defines a recess configured and adapted to engage an implant insertion device.

8 . The interbody spacer according to claim 7 , wherein the proximal end portion has a convex surface adapted to engage an implant insertion device.

9 . The interbody spacer according to claim 8 , wherein the convex surface of the proximal end portion defines a threaded aperture aligned with the longitudinal axis of the body portion, the threaded aperture adapted to threadably engage an implant insertion device.

10 . The interbody spacer according to claim 1 , wherein the distal end portion includes a substantially contoured configuration.

11 . The interbody spacer according to claim 10 , wherein the top and bottom surfaces of the body portion approximate towards one another along the longitudinal axis adjacent the distal end portion.

12 . The interbody spacer according to claim 1 , wherein the top and bottom surfaces are substantially parallel.

13 . The interbody spacer according to claim 1 , wherein the top and bottom surfaces approximate towards one another in a direction transverse to the longitudinal axis.

14 . A method of performing spinal surgery, comprising:
preparing an intervertebral space between first and second vertebral bodies; and advancing an interbody spacer into the intervertebral space, the interbody spacer including:
a body portion defining a longitudinal axis, the body portion including a distal end portion, a proximal end portion, opposed side surfaces that extend between the distal and proximal end portions, and top and bottom surfaces configured and adapted to engage adjacent vertebral bodies, wherein the body portion includes a cavity defined through the top and bottom surfaces, the cavity increasing in width at a medial position thereof and configured to retain biological material therein.

15 . The method according to claim 14 , further including packing the cavity with bone in-growth material.

16 . The method according to claim 14 , further including packing the cavity with drugs.

17 . The method according to claim 14 , wherein advancing the interbody spacer includes the interbody spacer having a cavity that includes undercuts defined therein, the undercuts defining convex sidewalls.

18 . The method according to claim 14 , wherein advancing the interbody spacer includes the interbody spacer having a cavity that includes undercuts defined therein, the undercuts defining planar sidewalls.

19 . The method according to claim 14 , wherein advancing the interbody spacer includes the interbody spacer having a plurality of substantially concentrically arranged ridges.

20 . The method according to claim 19 , wherein advancing the interbody spacer includes the plurality of substantially concentrically arranged ridges being a plurality of ring-shaped protrusions that define a generally saw-tooth pattern in a radial direction.

Assignees

• K2M Inc

Inventors

• Nunley Pierce
• Volk Stephanie
• McClymont Kaitlyn

Classifications

• A61F2002/30593

  hollow · CPC title

• A61F2002/30622

  Implant for fusing a joint or bone material · CPC title

• A61F2002/3093

  for promoting ingrowth of bone tissue · CPC title

• A61F2310/00023

  Titanium or titanium-based alloys, e.g. Ti-Ni alloys · CPC title

• A61B17/8625

  Shanks, i.e. parts contacting bone tissue · CPC title