Selectively expanding spine cage, hydraulically controllable in three dimensions for enhanced spinal fusion
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United States of America Patent
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Mar 12, 2013
Grant Date -
Jun 19, 2008
app pub date -
Oct 31, 2007
filing date -
Sep 26, 2005
priority date (Note) -
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Abstract
A selectively expanding spine cage has a minimized diameter in its unexpanded state that is smaller than the diameter of the neuroforamen through which it passes in the distracted spine. Hydraulic extension of extendable members permit the cage to conformably engage between vertebral bodies to effectively distract the disc space and rigidly fix the spine.
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