Percutaneous prosthetic spinal disc nucleus and method of manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 8, 2000
Issued Date -
N/A
app pub date -
Mar 16, 1998
filing date -
Jun 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A capsule-shaped prosthetic spinal disc nucleus for implantation into a human intradiscal space, made of a substantially inelastic constraining jacket surrounding an amorphous polymer core. The constraining jacket has a generally fixed maximum volume and defines a height. The amorphous polymer core fills an initial volume of the constraining jacket and develops an internal pressure. In response to the internal pressure, the constraining jacket transitions toward the maximum volume, increasing substantially in height.
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