SPINAL CAGE IMPLANT

• US 20070027544A1
• Filed: 07/28/2006
• Published: 02/01/2007
• Est. Priority Date: 07/28/2005
• Status: Abandoned Application

• Current Assignee: Altiva Corp. (Exactech, Inc.)
• Original Assignee: Altiva Corp. (Exactech, Inc.)
• Inventors: Blain, Jason, Kapitan, John, McCord, David
• Application Number:
  US11/460,862
• Publication Number:
  US 20070027544A1
• Time in Patent Office: Days
• US Class Current: 623/17.110
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30112 Rounded shapes, e.g. with rounded corners
• CPC Class Codes: A61F 2002/30266 wedge-shaped parallelepipeds
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30772 Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/3082 Grooves
• CPC Class Codes: A61F 2002/30904 serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/448 comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2002/4629 connected to the endoprosthesis or implant via a threaded connection
• CPC Class Codes: A61F 2230/0004 Rounded shapes, e.g. with rounded corners
• CPC Class Codes: A61F 2230/0082 parallelepipedal

Abstract

A spinal cage implant device includes a substantially planar top, a substantially planar bottom, two side walls, a posterior end wall, and an anterior end wall, wherein the implant is wider than high and longer than wide, and the substantially planar top and the substantially planar bottom include at least one opening, the external surfaces of the two side walls are textured and include at least one opening and that opening is bisected by at least one load-bearing frame structure, and at least one of the anterior end wall or posterior end wall include a hole for receiving a tool for surgical insertion of the spinal cage implant.

Claims

1. A spinal implant for implantation within an intervertebral disc space comprising:

a substantially rectangular cage that is wider than high and longer than wide and having;

an interior space,

a substantially planar top and bottom, both comprising at least one opening,

two side walls, both comprising at least one opening, the at least one opening comprising at least one load-bearing structure,

a posterior end wall and an anterior end wall, at least one of which comprising a hole for receiving a tool for manipulation of the cage.

2. The spinal implant of claim 1, wherein the cage is composed of a rigid biocompatible material comprising a radiolucent material.

3. The spinal implant of claim 2, wherein the cage is composed of plastic or carbon fiber reinforced polymer.

4. The spinal implant of claim 1, wherein external surfaces of at least one of the substantially planar top and bottom is smooth.

5. The spinal implant of claim 1, wherein external surfaces of at least one of the substantially planar top and bottom is textured.

6. The spinal implant of claim 5, wherein the texturing comprises one or more of transverse ridges, grooves, and teeth.

7. The spinal implant of claim 1, wherein the anterior end wall is higher and wider than the posterior end wall.

8. The spinal implant of claim 1, wherein external surfaces of the side walls are smooth.

9. The spinal implant of claim 1, wherein external surfaces of the side walls are textured.

10. The spinal implant of claim 9, wherein the texturing comprises one or more of cross-hatching, pebbling, serrations, striations, and four-sided pyramid protrusions.

11. The spinal implant of claim 1, wherein the at least one load bearing structure includes at least one substantially triangular truss.

12. The spinal implant of claim 1, wherein the at least one load bearing structure includes two trusses.

13. The spinal implant of claim 12, wherein one truss is located within one opening in one side wall and the other truss is located within one opening in the other side wall, and the two trusses are similarly orientated to one another.

14. The spinal implant of claim 12, wherein one truss is located within one opening in one side wall and the other truss is located within one opening in the other side wall, and the two trusses are inversely orientated to one another.

15. The spinal implant of claim 1, wherein at least one of the anterior end wall or the posterior end wall further comprises at least one beveled protrusion forming a substantially rectangular nose, wherein the at least one beveled protrusion comprises at least one groove.

16. The spinal implant of claim 15, wherein the at least one beveled protrusion comprises two grooves that are oriented perpendicular to one another.

17. The spinal implant of claim 1, further comprising an osteogenic material within the interior space.

18. A spinal implant device for implantation within an intervertebral disc space comprising:

a substantially rectangular cage that is wider than high and longer than wide and having;

a substantially planar top and bottom, each comprising an opening, and each either smooth or textured,

two side walls, each of which comprises at least one opening, and wherein a truss is located within the at least one opening in one side wall and another truss is located within the at least one opening in the other side wall, and wherein the external surfaces of the two side walls are either smooth or textured, and

a posterior end wall and an anterior end wall, at least one of which comprising a hole for receiving a tool for surgical insertion of the spinal implant, and at least one of which comprising a beveled protrusion forming a substantially rectangular nose which includes at least one groove.

19. The spinal implant of claim 18, further comprising an interior space adapted for receiving an osteogenic material, and formed from a rigid biocompatible material that is radiolucent.

20. A spinal implant device for implantation within an intervertebral disc space comprising:

a substantially rectangular cage formed from a rigid biocompatible material that is radiolucent, and that is wider than high and longer than wide and having;

an interior space,

a substantially planar top and bottom, each comprising an opening, and each textured with transverse teeth,

two side walls, each of which comprises one opening, and wherein a truss is located within the one opening in one side wall and another truss is located within the opening in the other side wall, and the two trusses are inversely oriented to one another, and wherein the external surfaces of the two side walls are textured with four-sided pyramid protrusions,

a posterior end wall and an anterior end wall, each of which comprises a hole for receiving a tool for surgical insertion of the spinal implant, and each of which comprises a beveled protrusion forming a substantially rectangular nose which includes two grooves that are oriented perpendicular to one another, and

an osteogenic material within the interior space.