<；P>；PROBLEM TO BE SOLVED: To provide a stent that has a good performance of delivery (transportation through blood vessels), placement at an arbitrary position and re-constriction prevention without the need of warming it up in the body, and is hard to move from the initial placement position. <；P>；SOLUTION: The stent 11 has an annular strut 13 with a bent 12, and a link 15 to connect the struts. The stent 11 is made of a tubular Ti-Ni-based shape-memory alloy containing Nb. At least the temperature to recover the shape of an extensible holding part of the bent 12 can be higher than the organism temperature at the time when delivering the stent 11. <；P>；COPYRIGHT: (C)2008,JPO&INPIT
