Interbody fusion devices with self-affixing mechanisms

Patent metadata

Field	Value
Publication number	US-9351847-B2
Application number	US-201414458687-A
Country	US
Kind code	B2
Filing date	Aug 13, 2014
Priority date	Aug 22, 2013
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

Interbody fusion devices including deployable fixation members. The implant may include a spacer, optionally, an end member coupled to the spacer, and one or more fixation members configured to extend into adjacent vertebrae. The fixation members may include screws, nails, shims, tangs, spikes, staples, pins, blades, fins, or the like, and combinations thereof.

First claim

What is claimed is:

1. An implant for implantation in a treated area of an intervertebral space between vertebral bodies of a spine, the implant comprising:
a spacer having a superior surface and an inferior surface, the superior surface and the inferior surface each have a contact area configured to engage adjacent vertebrae, and the spacer defines at least one opening extending from the superior surface to the inferior surface;
at least one shaft coupled to the spacer and extending through the opening;
one or more fins operatively attached to the shaft; and
a wall extending through the spacer, wherein the wall divides the at least one opening in the spacer,
wherein rotation of the shaft causes deployment from a retracted position to a deployed position of the one or more fins, the one or more fins configured to engage an adjacent vertebral body,
wherein the one or more fins rest on the wall dividing the at least one opening when in the retracted position but not in the deployed position.

2. The implant of claim 1 , wherein the one or more fins are rotated about 90° between retracted and deployed positions.

3. The implant of claim 2 , wherein the one or more fins are sized and shaped such that they are housed within the opening when in the retracted position.

4. The implant of claim 1 , wherein the one or more fins include a plurality of fins attached to a single shaft.

5. The implant of claim 1 , wherein the one or more fins have a sharpened edge configured to cut through the adjacent vertebral body.

6. The implant of claim 1 , wherein the one or more fins have straight or hooked shapes.

Assignees

• Globus Medical Inc

Inventors

• Reed Don
• Ingalhalikar Aditya
• Nichols Jeff
• Preske Brandon
• Fromhold Mark
• Mclaughlin Colm
• Adams Mark
• Garvey Brian

Classifications

• A61F2002/30593

  hollow · CPC title

• A61F2002/30787

  inclined obliquely with respect to each other · CPC title

• A61F2002/30507

  using a threaded locking member, e.g. a locking screw or a set screw · CPC title

• A61F2220/0016

  with sharp anchoring protrusions, e.g. barbs, pins, spikes · CPC title

• A61F2002/30579

  with mechanically expandable devices, e.g. fixation devices · CPC title