Stent delivery system utilizing novel balloon for obtaining variable post-deployment stent characteristics
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United States of America Patent
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Oct 23, 2001
Grant Date -
N/A
app pub date -
Dec 15, 1999
filing date -
Dec 15, 1999
priority date (Note) -
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Abstract
A stent delivery system is provided which incorporates a polyurethane balloon which exhibits a high coefficient of friction with respect to metallic substrates. Through the process of stent expansion, the delivery system creates a differential in the rate of axial growth of metallic stents. The differential in growth causes a center portion of the stent to experience greater axial expansion than respective end portions. The stent has the lower axial expansion of the end portions results in a stent having end portions of comparatively higher radial stiffness than the corresponding center portion of the stent.
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