06143033 is referenced by 269 patents and cites 37 patents.

An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is an annular plug conforming in size and shape with end plates of vertebrae. The implant has either an exterior surface identical to that of the harvest bone or an exterior surface machined to have a uniform shape such as an oval or a rectangle. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The top and bottom surfaces can be either flat planar surfaces or curved surfaces. Preferably, the anterior height of the implant is greater than the posterior height so that the implant is wedge-shaped profile to help restore disc height and the natural curvature of the spine. In one embodiment, the top and bottom surfaces each have a channel oriented in the anterior, lateral, or anterolateral direction for receiving a surgical instrument. The implant can also have a hole for attachment of an inserter. Although the interior space formed by the annular plug can be the natural shape defined by the medullary canal, the medullary canal walls can be machined so that the implant has a uniform interior space.

Title
Allogenic intervertebral implant
Application Number
9/219439
Publication Number
6143033
Application Date
December 23, 1998
Publication Date
November 7, 2000
Inventor
Kelly J Baker
Coatesville
PA, US
Jeffrey L Carver
Downingtown
PA, US
Beat Schenk
Paoli
PA, US
Hansjuerg W Emch
Philadelphia
PA, US
David C Paul
Drexel Hill
PA, US
Agent
Pennie & Edmonds
Assignee
Synthes
PA, US
IPC
A61F 02/28
A61F 02/44
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