Patent ID: 9636231
Date: 2017-05-02
CPC Classifications: A61F

Claim:
1. An expandable prosthetic implant device for engagement between vertebrae, comprising: an inner member having a hollow interior portion and a threaded external portion and including a first end portion configured to engage a first vertebral body; an outer member having a hollow interior portion configured to coaxially receive the inner member therein and including a second end portion configured to engage a second vertebral body, wherein the inner and outer members are moveable relative to each other along a longitudinal axis; a gear member positioned coaxial to the inner member and outer member and axially fixed to the outer member and freely rotatable with respect to the outer member, wherein the gear member threadedly engages the threaded portion of the inner member, wherein the gear member has a diameter greater than the outer member; a plurality of locking member disposed around a periphery of the outer member and protruding radially inward from the outer member configured to engage the threaded external portion of the inner member; and an endplate extending from at least one of the inner member and the outer member, wherein the endplate includes a chamfered perimeter, wherein the inner member comprises a longitudinal slot extending radially through a wall of the inner member and configured to engage at least one pin protruding radially inward from the outer member.