Intervertebral allograft spacer
AssigneesSynthes GmbH, Musculoskeletal Transplant Foundation
InventorsDavid C. Paul, Hansjuerg W. Emch, Beat Schenk, Joseph A. Yaccarino, III
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Abstract
An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
Claims20
An intervertebral implant comprising:
- a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra and having a wedge-shaped profile, wherein top and bottom surfaces of the implant have a plurality of teeth, wherein the implant further comprises a top portion having a top connecting surface and a bottom portion having a bottom connecting surface, the top connecting surface mating with the bottom connecting surface when the top and bottom surfaces are joined.
An allogenic intervertebral implant comprising top and bottom surfaces, each the top and bottom surfaces provided with a plurality of teeth;
- a first portion having a first connecting surface;
- a second portion having a second connecting surface;
- and
- a core having a first mating surface that mates with the first connecting surface and a second mating surface that mates with the second connecting surface to thereby form the allogenic intervertebral implant.
Dependencies are inferred from the claim text.