Urological stent therapy system and method
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United States of America Patent
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-
Nov 3, 1998
Grant Date -
N/A
app pub date -
Apr 9, 1996
filing date -
Apr 9, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A stent system and method for use in the prostate gland. The stent is made of a shape memory alloy such as nitinol, and has a low temperature martensite state, with a martensite transition temperature below body temperature, and a high temperature austenite state, with an austenite transition temperature at or above body temperature, and a memorized shape in the high temperature austenite state which is a helical coil of diameter large enough to hold the prostatic urethra open. The stent is used to heat the prostate and is left in the prostatic urethra while the prostate heals. After the prostate is substantially healed, the stent is cooled to its martensite state and is easily removed from the urethra.
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