| 摘要 |
<p>The present invention is a vascular dilatation device (11) for enlarging a passage in an obstruction in a vessel carrying flowing blood. A flexible cylindrical dilatation member (86) having first and second ends (87, 88) with an intermediate portion (86c) therebetween is disposed in the obstruction. The flexible cylindrical dilatation member (86) has a flow passage with a diameter and a longitudinally extending axis extending therethrough. The diameter of the flow passage is variable with movement of the first and second ends (87, 88) relative to each other along the longitudinally extending central axis from a contracted position to an expanded condition. The flexible cylindrical dilatation member is comprised of flexible elongate elements (36) extending helically about the longitudinally extending central axis.</p> |
