| 摘要 |
<p>An endovascular stent-graft (20) includes a generally tubular body (22), which is configured to assume a radially-compressed delivery state and a radially-expanded deployment state. The body (22) includes a flexible stent member (24), and a tubular fluid flow guide (26) attached to the stent member (24). The body (22) includes a compliance-restoration body portion (34), which extends axially along a portion of the body, and which comprises a portion of the stent member (24) and a portion of the fluid flow guide (26). When the body (22) is in the radially-expanded deployment state, the compliance-restoration body portion (34) is (a) characterized by a greatest diastolic outer radius (RD) when the body (22) is internally pressurized by fluid having a pressure of 80 mmHg, and (b) radially expandable to a greatest systolic outer radius (RS) when the body (22) 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 (RD).</p> |
