| 摘要 |
<p>The prosthesis, suitable for treating vascular aneurisms, consists of a supple elongated sleeve (7) forming a passage for the blood to flow through, supports (3) with hooked tips (17') for engaging with the inner wall of the blood vessel and springs (29) which enable the supports to move from a retracted to an extended position in which the sleeve is deployed. At least some of the springs can be in a zigzag configuration in both their retracted and extended modes. The springs are situated at one or both ends of the sleeve and in their retracted position they allow the prosthesis to be inserted into the blood vessel. Once the sleeve is in the required position the springs are released and the sleeve deployed. The supports (3) can be in the form of flexible strips or wires and the sleeve, which can be corrugated, is made from an elastic fabric such as polyethylene terephthalate.</p> |
