Artificial disc
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 10, 1991
Issued Date -
N/A
app pub date -
Nov 21, 1990
filing date -
Feb 15, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spinal disc prosthesis comprises an upper flat rigid plate, a lower flat rigid plate, and a flat elastomeric core interposed between said plates and adhered to the plates. A plurality of spaced-apart protuberances extend outwardly from the exposed faces of the plates for engagement with vertebrae above and below the plates. A porous coating covers the exposed surfaces of the plates. The elastomeric core is made of a polyolefin rubber having mechanical properites similar to a natural spinal disc.
First Claim
Family
International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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