INSTRUMENT SET AND METHOD FOR PERFORMING SPINAL NUCLECTOMY
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United States of America Patent
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Issued Date -
Apr 2, 2009
app pub date -
Sep 27, 2007
filing date -
Dec 16, 2004
priority date (Note) -
Abandoned
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Abstract
A nuclectomy method for creating a nuclear cavity in an annulus located in an intervertebral disc space and for preparing the nuclear cavity to receive an intervertebral prosthesis. The method involves identifying a plurality of regions in at least a portion of the nucleus. A sequence for removing the regions is also determined. At least one annulotomy is formed in the annulus along an annular axis to provide access to the nucleus. A guide system is positioned relative to the annulotomy. The guide system is configured to limit motion of at least one surgical tool relative to the guide system. A portion of the nucleus is removed from a first region using the surgical tool. At least one of the guide system and the surgical tool are configured to remove a portion of the nucleus from a second region. A portion of the nucleus is removed from a second region using the surgical tool.
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