Patent ID: 8409286
Filing Date: 2013-04-02
Classification: A61F

Abstract:
1. An expandable spinal implant positionable in an intervertebral disc space between adjacent vertebral bodies in a spine and comprising: a first member for contacting an endplate of one of the adjacent vertebral bodies, the first member defining a first bore, the first bore having a first threaded bore portion; a second member for contacting an endplate of the other of the adjacent vertebral bodies; a screw having a first threaded screw portion and a gear tooth screw portion, the first threaded screw portion being at least partially threaded into the first bore, the screw contacting the second member in a manner permitting the screw to rotate; an axle having a threaded axle portion, the threaded axle portion contacting the gear tooth screw portion such that rotation of the axle moves the first and second members from a first relative spacing to a second relative spacing, to simultaneously expand the implant in the intervertebral space and against the endplates; and a locking cap having a first protruding element capable of engaging the axle and a second protruding element configured for disposal in an aperture in one of the first member and the second member to prevent the axle from rotating.