Bone grafts
First Claim
1. A hollow spinal spacer for engagement between vertebrae, comprising:
- an anterior wall having a convexly curved anterior surface and opposite ends;
a posterior wall having a flat posterior surface and opposite ends;
two lateral walls, each integrally connected between said opposite ends of said anterior and posterior walls to define a chamber; and
said walls comprised of bone and further defining;
a superior face defining a first opening, said opening in communication with said chamber, said superior face having a superior engaging surface; and
an opposite inferior face defining a second opening, said second opening in communication with said chamber, said inferior face having an inferior engaging surface.
0 Assignments
0 Petitions
Accused Products
Abstract
Spinal spacers 20 are provided for fusion of a motion segment. The spacers include a load bearing member 21 having a wall 22 sized for engagement within a space between adjacent vertebrae to maintain the space and an effective amount of an osteogenic composition to stimulate osteoinduction. The osteogenic composition includes a substantially pure osteogenic factor in a pharmaceutically acceptable carrier. In one embodiment the load bearing member includes a bone graft impregnated in an osteogenic composition. In another embodiment, the osteogenic composition 30 is packed within a chamber 25 defined in the graft. Any suitable configuration of a bone graft is contemplated, including bone dowels, D-shaped spacers and cortical rings.
-
Citations
40 Claims
-
1. A hollow spinal spacer for engagement between vertebrae, comprising:
-
an anterior wall having a convexly curved anterior surface and opposite ends;
a posterior wall having a flat posterior surface and opposite ends;
two lateral walls, each integrally connected between said opposite ends of said anterior and posterior walls to define a chamber; and
said walls comprised of bone and further defining;
a superior face defining a first opening, said opening in communication with said chamber, said superior face having a superior engaging surface; and
an opposite inferior face defining a second opening, said second opening in communication with said chamber, said inferior face having an inferior engaging surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
- 15. A spinal spacer, comprising a load bearing member of cortical bone obtained from a cross-sectional slice of the diaphysis of a long bone having a medullary canal, said member having a wall, a superior surface and an inferior surface said wall sized for engagement within an intervertebral space and defining a chamber, said chamber including a portion of the canal, at least one of said surfaces defining surface roughenings for engaging the endplates of adjacent vertebrae.
- 28. A spinal spacer, comprising a load bearing member of bone obtained from the diaphysis of a long bone having a medullary canal, said member having a wall, a superior surface and an inferior surface, said wall sized for engagement within an intervertebral space and defining a chamber, said chamber including a portion of the canal, at least one of said surfaces defining surface roughenings for engaging the endplates of adjacent vertebrae, said surface roughenings selected from the group consisting of knurlings, a waffle pattern, and teeth.
Specification