Surgical graft/stent system
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United States of America Patent
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Nov 9, 2004
Grant Date -
Jun 27, 2002
app pub date -
Oct 19, 2001
filing date -
Sep 8, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A tubular graft/stent comprises a tubular sheath having at intervals along its length a plurality of ring-like rigid members, which are attached to the sheath around their respective circumferences and are made of a shape memory material, so that when the members change shape the sheath adopts a new cross section in conformity with the members along the sheath's whole length. The members may be discontinuous to allow the adoption of a contracted shape in the martensitic phase and an expanded shape in the austenitic phase. A graft may also have a branched side tube which can be inverted so as to be housed within the sheath.
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