Intervertebral disc prosthesis with improved mechanical behavior
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United States of America Patent
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May 11, 2004
Grant Date -
N/A
app pub date -
Jul 20, 2001
filing date -
Dec 11, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An intervertebral disc prosthesis comprising two plates and a cushion interposed between the plates is contemplated. The cushion includes a compressible body having two ends in contact with the plates. At least one of the ends is freely displaceable relative to the plate in a parallel direction. Thus, the prosthesis imitates and approximates the mechanical properties of a healthy natural intervertebral disc.
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