Modular nucleus pulposus prosthesis
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United States of America Patent
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Aug 5, 2014
Grant Date -
Jan 28, 2010
app pub date -
Jul 23, 2009
filing date -
Jul 23, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
At least two substantially identical generally mirror image complimentary disc segments combined to form a generally discoid endoprosthetic disc and associated tools and methods for replacing the intervertebral disc. Complimentary disc segments include outer circumferential walls roughly equal to a semi-circle aligned along concave-convex inner wall inner walls forming an “s”- shaped common border to provide a generally symmetrical discoid congruent structure which is positioned within the annulus of a spinal disc section. Disc segments may include structures to support, position and secure the segments to one another intradiscally. Surgical tools include structures for inserting and aligning disc members together. Also disclosed is a system and method for replacing the nucleus pulposus using the surgical tools adapted for placement and alignment of the disc.
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