Patent ID: 7344564
Filing Date: 2008-03-18
Classification: A61F

Abstract:
1. An expandable spinal stabilization device comprising: a plurality of plates arranged in a stack comprising a top plate, a bottom plate, and one or more interstitial plates disposed between the top plate and the bottom plate, each plate comprising an obverse face and a reverse face such that a pair of adjacent faces comprising the obverse face of one plate and the reverse face of an adjacent plate is provided for each pair of adjacent plates in the stack, wherein: c. the abutment is positioned in a manner to engage the catch of an adjacent face when the plates are rotated about the longitudinal axis of a connecting rod connecting the plurality of plates; wherein the plates are connected to the connecting rod such that the plurality of plates adopt a helical configuration about the longitudinal axis of the connecting rod when the plates are turned about the longitudinal axis of the connecting rod; and further wherein the dimensions of the device render it suitable for insertion into an intervertebral space.