Transforaminal prosthetic spinal disc apparatus

Patent metadata

Field	Value
Publication number	US-9301851-B2
Application number	US-201414501972-A
Country	US
Kind code	B2
Filing date	Sep 30, 2014
Priority date	Dec 7, 2009
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

An intervertebral prosthetic implant having a first endplate having a first surface configured to substantially engage with a first vertebral body and a second surface having an extension with a concave contact surface, the concave contact surface being spaced apart from the second surface. A second endplate is provided with a first surface configured to substantially engage with a second vertebral body and a second surface comprising a convex contact surface, and the second endplate having a securing element positioned along and above the second surface defining a first and second window on opposing sides of the second surface. The securing element extends along the width and length of the lower endplate and configured with an access hole. An extension portion extends from the first surface of the first endplate through the access hole of the securing element and contacts the second surface of the second endplate.

First claim

What is claimed is:

1. An implant for positioning between adjacent vertebral bodies comprising:
a first endplate having a first surface configured to substantially engage a first vertebral body, the first endplate including a first keel; and
a second endplate having a second surface configured to substantially engage with a second vertebral body, the second endplate including a second keel,
wherein the second endplate includes a first window and an opposing second window,
wherein a portion of the first endplate directly contacts a surface of the second endplate and is retained within the first and second windows of the second endplate.

2. The implant of claim 1 , wherein the implant is configured and dimensioned to be positioned between the first and second vertebral bodies from a transforaminal direction.

3. The implant of claim 1 , wherein the second endplate includes a partially spherical convex surface.

4. The implant of claim 1 , wherein the second endplate includes a pair of curved rails that form the first window and the second window of the implant.

5. The implant of claim 1 , wherein the first endplate includes an extension portion having a partially spherical concave surface.

6. The implant of claim 5 , wherein the partially spherical concave surface of the first endplate engages a partially spherical convex surface of the second endplate.

7. The implant of claim 1 , wherein the first keel includes at least one slot.

8. The implant of claim 1 , wherein the first keel and the second keel include openings capable of receiving an insertion instrument therein.

9. The implant of claim 1 , wherein the first window and the second window are part of an element having an access hole.

10. The implant of claim 1 , wherein the first endplate includes an extension portion that can extend into the access hole.

11. The implant of claim 1 , wherein the first keel and the second keel include at least one slot.

12. An implant comprising:
a first endplate having a first surface configured to substantially engage a first vertebral body, the first endplate including a first keel; and
a second endplate having a second surface configured to substantially engage with a second vertebral body, the second endplate including a second keel,
wherein the second endplate includes a first window and an opposing second window
wherein a portion of the first endplate directly contacts a surface of the second endplate and is retained within the first and second windows of the second endplate.

13. The implant of claim 12 , wherein the second endplate includes a partially spherical convex surface.

14. The implant of claim 12 , wherein the second endplate includes a pair of curved rails that form the first window and the second window of the implant.

15. The implant of claim 12 , wherein the first endplate includes an extension portion having a partially spherical concave surface.

16. The implant of claim 15 , wherein the partially spherical concave surface of the first endplate engages a partially spherical convex surface of the second endplate.

17. An implant comprising:
a first endplate having a first surface configured to substantially engage a first vertebral body, and
a second endplate having a second surface configured to substantially engage with a second vertebral body,
wherein the second endplate includes a first window and an opposing second window,
wherein a portion of the first endplate directly contacts a surface of the second endplate and is retained within the first and second windows of the second endplate.

18. The implant of claim 17 , wherein the implant is inserted transforaminally.

19. The implant of claim 17 , wherein the first endplate includes a concave surface and the second endplate includes a convex surface that contacts the concave surface.

Assignees

• Globus Medical Inc
• Globus Medical Inc

Inventors

• Hansell Noah
• Bennett Jeffrey
• Paul David

Classifications

• A61F2002/30594

  slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots · CPC title

• A61F2002/30884

  Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity · CPC title

• A61F2310/00796

  Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite · CPC title

• A61F2002/30662

  with rotation-limiting means · CPC title

• A61F2002/30369

  Limited lateral translation of the protrusion within a larger recess · CPC title