Anterior expandable spinal fusion cage system
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United States of America Patent
Stats
-
Dec 28, 2004
Grant Date -
Sep 26, 2002
app pub date -
May 13, 2002
filing date -
Apr 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for implanting an intervertebral cage containing a bone graft and fusing adjacent vertebrae together while maintaining or correcting the angular alignment and balance of the spine. An improved method for anterior interbody fusion to form a fused bone segment having a predetermined fixed angular orientation. The apparatus has a fusion cage and has a set of expansion caps that operably expand the cage from which one is selected to adjust the orientation between adjacent vertebrae with facing surfaces at a predetermined angle relative to each other. A connecting bolt is threaded to the rear of the cage unit to hold the cap in position.
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