Motion restoring intervertebral device
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United States of America Patent
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-
Jan 17, 2012
Grant Date -
Feb 26, 2009
app pub date -
Apr 28, 2006
filing date -
May 2, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A motion restoring intervertebral device includes first and second articulating components positioned between adjacent vertebrae with the articulating surface of the first component being formed by a circular domed convex projection having a first radius. The articulating surface of the second component is formed by a generally concave recess having the first radius in the medial-lateral direction and a second larger sweeping radius in the interior-posterior direction so that the components are capable of rotating against each other in all directions and translate against each other in the anterior-posterior direction, whereby translation away from the center of the first radius will produce device and joint distraction to limit excessive translation.
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