Angioplasty stent
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United States of America Patent
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-
Mar 9, 1993
Issued Date -
N/A
app pub date -
Feb 5, 1992
filing date -
Dec 8, 1987
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A prosthesis for use in preventing re-stenosis after angioplasty is formed of plastic or sheet metal, and is expandable and contractible for placement. The prosthesis can be inserted while in a collapsed position, then expanded and locked at the larger diameter. Spring force can be provided by the material itself, or metal springs can be embedded within the walls of the prosthesis. Preferably, the walls have holes therethrough to promote tissue growth; and, in one embodiment, the holes are in the form of slots so that the prosthesis is segmented and can bend longitudinally.
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