Expandable variable angle intervertebral fusion implant

Details Expandable variable angle intervertebral fusion implant Expandable variable angle intervertebral fusion implant

1999-07-30

2000-12-12

Philogene, Pedro

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

606 61, A61F 244

Patent

active

061592447

ABSTRACT:
An expandable intervertebral fusion implant includes a pair of semi-cylindrical shells having mating surfaces which resist shifting when the parts are assembled. The shells have pillars provided with teeth which permit the shells to be ratcheted outward after they have been placed between spinal elements. The pillars are curved, or extend from their shells at a non-perpendicular angle, so that the resulting implant is tapered, to accommodate non-parallel spinal element end plates and thus maintain proper spinal curvature.

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patent: 5505732 (1996-04-01), Michelson
patent: 5653762 (1997-08-01), Pisharodi
patent: 5665122 (1997-09-01), Kambin
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patent: 5865848 (1999-02-01), Baker
patent: 5876457 (1999-03-01), Picha et al.
patent: 5888228 (1999-03-01), Knotche et al.
patent: 5980522 (1999-11-01), Koros et al.
patent: 6045579 (2000-04-01), Hochshuler et al.

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