Intervertebral disc nucleus prosthesis
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 11, 2002
Grant Date -
N/A
app pub date -
Jan 7, 2000
filing date -
Jul 10, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention provides a prosthetic cover (12) shaped to form a replacement nucleus pulposis (56) for an intervertebral disc (50), said cover comprising a permeable layer of an immunologically neutral material terminating in a valve structure (16) to allow the introduction of a hydrogel material (14); characterized in that a transudative material is disposed on the intended inner face of the cover to allow a through flow of low molecular weight materials only.
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