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OwnerJohn Pafford, Lawrence M. Boyd +3inventors
InventorsJohn Pafford, Lawrence M. Boyd, William F. McKay, Eddie F. Ray III, James E. Van Hoeck
Estimating the term…
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.
A spinal spacer comprising a load bearing member having a wall sized for engagement within a space between adjacent vertebrae to maintain the space, said load bearing member including a bone graft impregnated with an effective amount of an osteogenic composition to stimulate osteoinduction, said osteogenic composition including a substantially pure osteogenic factor in a pharmaceutically acceptable carrier.
The spacer of claim 18 wherein said threads define an angle between leading and trailing flanks of adjacent ones of said teeth, said angle between about 50 degrees and 70 degrees.
The spacer of claim 18 wherein each said tooth has a height between about 0.030 inches and about 0.045 inches.
The spacer of claim 18 wherein said dowel includes a tool engaging portion defining a tool engaging hole for receiving an implanting tool.
A spinal spacer comprising a load bearing member having a wall sized for engagement within a space between adjacent vertebrae to maintain the space, said load bearing member defining a chamber and including a bone graft obtained from the diaphysis of a long bone having a medullary canal said chamber including a portion of the canal, and an effective amount of an osteogenic composition to stimulate osteoinduction, said composition including a substantially pure osteogenic factor in a pharmaceutically acceptable matrix and packed within said chamber.
A hollow spinal spacer for engagement between vertebrae, comprising:
Dependencies are inferred from the claim text.