Patent ID: 8721723
Filing Date: 2014-05-13
Classification: A61F

Abstract:
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, the gear member configured with a plurality of notches, a locking assembly having a flexible member positioned between the inner member and the outer member and movable between a first position and a second position, and wherein in the first position one end of the flexible member engages with one of a plurality of notches configured on an inner surface of the gear member to block movement of the gear member, and in the second position the flexible member is disengaged from one of the plurality of notches and allows movement of the gear member which allows relative movement between the inner member and the outer member.