| 摘要 |
<p>A stent having a flexibility in axial direction before expansion, causing no contraction of the length thereof in axial direction during expansion, having a very large resistance against a force to contract a blood vessel after expansion, capable of uniformly expanding the strut thereof, and preventing such a problem that, when expanded, both end parts thereof are warped upward into a diameter larger than that of the center part thereof, wherein the size of basic cells forming the stent is refined to suppress the extrusion of the endothelial cells of a tubular organization to the inside of the stent, whereby the stent allowing a Y-stent to a branch blood vessel while maintaining a high radial force and an excellent scaffolding capability can be provided.</p> |
