| 摘要 |
<p>The endoprosthesis or stent consists of alternating lengthwise members (21, 22) set with opposite ends projecting, and connecting rings made from strands (7) joining the lengthwise members in a zigzag pattern. The shape of the endoprosthesis enables it to be collapsed for insertion by pulling one set of lengthwise elements in relation to the other, and deployed by pushing them towards one another. At least some of the lengthwise members are made from twisted filaments with the strands (7) passing between them, and their tips are rounded into a droplet shape. They can be made, for example, from metal wire with tips joined together. The rings can also be made of metal wire strands with ends joined by welding.</p> |
