Safety cryotherapy catheter
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United States of America Patent
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-
Nov 18, 2003
Grant Date -
Apr 18, 2002
app pub date -
Sep 14, 2001
filing date -
Feb 24, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
Improved devices, systems, and methods for inhibiting hyperplasia in blood vessels provide controlled and safe cryotherapy treatment of a target portion within a body lumen of a patient. One embodiment of the cryotherapy catheter comprises a catheter body having a proximal end and a distal end with a cooling fluid supply lumen and an exhaust lumen extending therebetween. A first balloon is disposed near the distal end of the catheter body in fluid communication with the supply and exhaust lumens. A second balloon is disposed over the first balloon with a barrier therebetween.
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