Stent-grafts with post-deployment variable radial displacement
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United States of America Patent
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Dec 12, 2017
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N/A
app pub date -
Apr 4, 2012
filing date -
Aug 28, 2011
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Abstract
An endovascular stent-graft includes a generally tubular body configured to assume a radially-compressed delivery state and a radially-expanded deployment state. The body includes a flexible stent member, and a tubular fluid flow guide attached to the stent member. The body includes a compliance-restoration body portion extending axially along a portion of the body, and including portions of the stent member and fluid flow guide. When the body is in the radially-expanded deployment state, the compliance-restoration body portion characterized by a greatest diastolic outer radius when the body is internally pressurized by fluid having a pressure of 80 mmHg, and radially expandable to a greatest systolic outer radius when the body is internally pressurized by fluid having a pressure of 120 mmHg. The greatest systolic outer radius (RS) is at least 5% greater than the greatest diastolic outer radius.
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