Medical stent
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United States of America Patent
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-
Dec 30, 2003
Grant Date -
Dec 5, 2002
app pub date -
Sep 28, 2001
filing date -
Jun 5, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A medical stent includes a first cylindrical body having a first inner diameter and a central axis, a second cylindrical body connected to one end of the first cylindrical body and having a second inner diameter, and a valve assembly for preventing food or fluid from flowing upstream. The valve assembly includes first, second and third valve members that are extended the central axis to an inner circumference wall of the first cylindrical body and spaced away from each other at an angle of 120.degree. in a circumference direction of the first cylindrical body, the first, second and third valve members being provided with first, second and third passages, respectively, and a supporting valve member for connecting lower ends of the first, second and third valve members to an inner circumference wall of the first cylindrical body.
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