| 摘要 |
<p>A stent-valve device includes a non-collapsible valve component and a stent component having a first ring connected to a second ring. The first ring has a characteristic first diameter and a valve support for supporting the valve component. The second ring is contractible and expandable between a second diameter less than a third diameter. The second diameter is less than the first diameter and the third diameter is greater than the first diameter. The first ring preferably includes a plurality of elements that extend downward to feet that project radially inward. The valve component rests on the feet for support. A seal is preferably disposed about the first ring. The valve component may be mechanical valve prosthesis, a bio-prosthesis (such as a non-collapsible porcine valve) or a polymer-based prosthesis. In another aspect of the invention, a deployment catheter is provided for effectively deploying the stent-valve device(s) described herein.</p> |
