| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain an artificial organ with high reliability when it is used and which is easily prepd. and implanted by providing several structural stripes with wave-like part wound for forming a tubular surface on a pipe part in an artificial organ which is implanted in a conduit for ensuring a path in the conduit such as a blood vessel. SOLUTION: A vasodilation tool 1 being called as a stent is to be implanted in an artificial organ for an aneurysm and an anatomical conduit such as the air tube and the esophagus and is formed of several stripes, e.g. four stripes 3, 5, 7 and 9. On each of the stripes 3, 5, 7 and 9, a wave-like part is provided and stripes 3, 5, 7 and 9 are formed into rings 13, 15, 17 and 19, respectively. Its zigzag constitution makes the artificial organ contractible to the shaft 11 in its longitudinal direction to the first extremely contracted diameter to make it possible to introduce it into a narrow guide tube which enables percutaneous implantation by a method called as Cerdinger's method and thereafter, it is extended radially in the selected conduit.</p> |
