Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
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United States of America Patent
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Jul 10, 2012
Grant Date -
Jun 10, 2010
app pub date -
Dec 2, 2009
filing date -
Dec 3, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A spine stabilization prosthesis which supports the spine while providing for the preservation of spinal motion. The spine stabilization prosthesis incorporates a bone anchor having a deflectable post and a compound spinal rod which provide for load sharing while preserving range of motion and reducing stress exerted upon the bone anchors and spinal anatomy. The bone anchor includes a deflectable post connected by a ball-joint to a bone screw. The compound spinal rod includes a coupling mounted to the deflectable post and connected by a pivoting joint to a rod. The combined motions of the ball-joint and the pivoting joint support a range of motion of adjacent vertebrae which closely approximates the natural range of motion of the spine.
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