Expandable vertebral prosthesis

Details Expandable vertebral prosthesis Expandable vertebral prosthesis

2006-08-15

2010-10-12

Barrett, Thomas C (Department: 3775)

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

Implantable prosthesis

Bone

C623S017140

Reexamination Certificate

active

07811327

ABSTRACT:
The present invention relates to an expandable prosthetic implant device for engagement between vertebrae generally comprising an inner member, outer member, and gear member positioned coaxial with respect to each other such that the inner and outer members are moveable relative to each other along an axis. The gear member is axially fixed to the outer member and freely rotatable with respect to the outer member and the gear member threadedly engages a threaded portion of the inner member to translate inner member along the axis. The implant is configured to engage the vertebrae in a predetermined alignment and the gear member includes gear teeth exposed to the exterior and configured to be accessible by a tool member at a plurality of angular positions around the perimeter of the implant device.

REFERENCES:
patent: 5480442 (1996-01-01), Bertagnoli
patent: 5534029 (1996-07-01), Shima
patent: 6730088 (2004-05-01), Yeh
patent: 7223291 (2007-05-01), Errico et al.
patent: 2006/0100710 (2006-05-01), Gutlin et al.
patent: 2006/0293755 (2006-12-01), Lindner et al.

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