Balloon catheter stent delivery system with ridges
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United States of America Patent
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Aug 11, 2009
Grant Date -
Jun 3, 2004
app pub date -
Feb 15, 2002
filing date -
Feb 16, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A balloon catheter and stent delivery system for medical treatment of a patient includes a balloon having a pattern of ridges in an initial deflated state. The ridges may cooperate with structural elements of a stent crimped onto the balloon, to increase and enhance longitudinal retention of the stent while the catheter system is advanced or withdrawn. Upon inflation, the balloon recovers to an inflated shape having a cylindrical working portion. The balloon catheter thus provides for uniform expansion of the stent when the balloon is inflated. The present invention also tends to protect the leading or distal end of the stent during advancement, and tends to protect the proximal end of the stent during any withdrawal of the catheter system.
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