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US 5,306,308 AGranted
Intervertebral implant
OwnerUlrich Gross, Herman-Josef Schmitz +2inventors
InventorsUlrich Gross, Herman-Josef Schmitz, Bertram Kaden, Gerhard Fuhrmann
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Abstract
An intervertebral implant consisting of a disc-shaped spacer made of rigid material and insertable between opposed and adjacent vertebrae in which the opposing sides (1, 2) of the implant bordering the vertebrae are circular discs and have a central raised dome (3 or 4) and roof-shaped projections thereon (5 or 6).
Claims16
An intervertebral implant insertable between two vertebrae, comprising:
- a disc made of rigid material and having two opposing sides bordering respectively adjacent vertebrae, each said side having a circular frontal area, a raised dome at a central portion of said circular area, and roof-shaped projections surrounding said dome, each of said projections having a pair of end faces, a ridge edge, a pair of side faces, and a pair of base edges extending between said end faces, each of side faces terminating at said ridge edge and at a respective base edge the base edges and the ridge edge of said projections forming respective arcs of concentric circles.
Dependencies are inferred from the claim text.