Spinal disc prosthesis and methods of use
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United States of America Patent
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Apr 22, 2008
Grant Date -
Oct 26, 2006
app pub date -
Apr 22, 2005
filing date -
Apr 22, 2005
priority date (Note) -
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Abstract
The subject invention provides a modular six-degrees-of-freedom spatial mechanism for spinal disc prosthesis, with three rotational and three translational degrees-of-freedom within the entire workspace of a Functional Spinal Unit (FSU). The prosthetic disc mechanism attaches to upper and lower plates anchored between vertebrae of an FSU. Scaling, conjoined with motion limit stops, allows the device to realize almost any nominal spinal articulation, from the cervical to lumbar regions.
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