Patent Document ID: 8267979
Application ID: 12566559

Base Claim:
1. A dynamic spine stabilization device comprising: a bone anchor having a housing and a longitudinal axis; a cavity in the housing coaxial with the longitudinal axis; a post received in the cavity; the post having a retainer at a distal end and a mount at a proximal end; the retainer being secured in a pocket of the cavity of the housing such that the post may be deflected within the housing; a spring positioned in the cavity of the housing between the post and the housing such that deflection of the post causes compression of the spring in a direction parallel to the longitudinal axis; and wherein the spring applies a force upon the post pushing the post towards a position in which the post is coaxial with the longitudinal axis.

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Claim 7:
7. The device of claim 1 , wherein said post can be deflected about a point in said bone anchor that is adapted to be implanted adjacent a surface of a vertebra.