Flexible self-expandable stent and method for making the same
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United States of America Patent
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-
Feb 22, 2000
Grant Date -
N/A
app pub date -
May 23, 1997
filing date -
May 23, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A flexible self-expandable stent comprises a plurality of radially cylindrical elastic units spaced at fixed intervals, a cylindrical cover fixing member which sheaths the cylindrical elastic units, and a reverse flow preventing valve. The reverse flow preventing valve is attached to the inner wall of the stent, for preventing food-stuffs or fluids from flowing from a downstream side to an upstream side. The flexible self-expandable stent exhibits improved flexibility so that when the stent is disposed in a curved lumina, it can flexibly correspond to the curvature of the lumina and prevent the reverse flow of foodstuffs or fluids by use of the reverse flow preventing valve.
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