Disintegrating stent and method of making same
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United States of America Patent
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Mar 5, 2013
Grant Date -
Jul 15, 2004
app pub date -
Dec 23, 2003
filing date -
Jun 13, 2000
priority date (Note) -
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Abstract
A temporary stent endoprosthesis that does not require an interventional procedure for removal. The disintegrating stent is preferably made from a bioabsorbable polymer, such as by braiding polymer monofilaments into a tubular mesh shape, and the polymer has fracture initiation sites within it that promotes the disintegration of the stent into small pieces that are harmlessly transported out of the body by the vessel contents. Fracture initiation sites may be created by controlling the heterogenous structure of amorphous and crystalline regions, by introducing internal or surface fracture initiation sites, or use of multiple strands with small section size.
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