Flexible stent having a pattern formed from biocompatible...

Details Flexible stent having a pattern formed from biocompatible... Flexible stent having a pattern formed from biocompatible...

2011-03-22

2011-03-22

Manahan, Todd E (Department: 3734)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent structure

C623S001340

Reissue Patent

active

RE042244

ABSTRACT:
A flexible stent having a waveform pattern formed from adelete-start id="DEL-S-00001" date="20110322" ?sheet ofdelete-end id="DEL-S-00001" ?biocompatible materialdelete-start id="DEL-S-00002" date="20110322" ?anddelete-end id="DEL-S-00002" ?into a tubular shape for maintaining the patency of a lumen such as in a coronary vessel. The waveform pattern of the stent is formed from a flat sheet of malleable, biocompatible material by, for example, photochemically etching thedelete-start id="DEL-S-00003" date="20110322" ?sheetdelete-end id="DEL-S-00003" ?insert-start id="INS-S-00001" date="20110322" ?biocompatible materialinsert-end id="INS-S-00001" ?and leaving a framework or plurality of closed cells. The waveform pattern is formed into a tubular shape around a deflated, delivery catheter balloon with segments of the closed cells being interposed only overlapping a reinforcing member extending longitudinally along the stent. The stent material is treated to reduce the coefficient of friction of the material and to aid in the radial expansion of the stent with the balloon. Radiopaque markers are positioned at the ends of the stent to aid the physician in positioning the stent at an occlusion site.

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