Posterior stabilization for fixed center of rotation anterior prosthesis of the intervertebral disc
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United States of America Patent
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Issued Date -
Mar 27, 2008
app pub date -
Mar 12, 2007
filing date -
Sep 27, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A spinal implant assembly used in conjunction with an artificial disc to prevent the artificial disc from disconnecting or shifting after being implanted in a patient. The spinal implant assembly prevents rotation of an artificial disc beyond a maximum range of motion for the artificial disc. That is, the implant assembly prevents the artificial disc from over rotating in any particular direction which could result in a failure to the artificial disc and/or instability to the spine. In its capacity as a safety device, the spinal implant assembly of the invention is passive permitting an artificial disc to rotate without interference or resistance, so long as the range of rotation for the disc remains within safe limits. The spinal implant assembly includes at least one stabilization member attached to vertebrae above and below the artificial disc. The stabilization member is curved and is adapted to compress and expand while retaining its curved shape.
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