Selectively expanding spine cage, hydraulically controllable in three dimensions for vertebral body replacement
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United States of America Patent
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Dec 6, 2011
Grant Date -
Oct 4, 2007
app pub date -
Mar 28, 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. The cage conformably engages between vertebral bodies to effectively distract the disc space and rigidly fix the spine. Extendible members with multiple interfitting stages permit a relatively large range of distraction capability in a compact package.
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