<；P>；PROBLEM TO BE SOLVED: To provide a stent that has a sufficient rigidity during the work to be inserted into a body cavity, can be inserted into even an classified in vivo region, and has excellent flexibility and dilation maintainability after dilating the region where it is inserted. <；P>；SOLUTION: In the stent 1, there are arranged a plurality of annular bodies 2 each having the pluralities of one-end side bent parts 4a, the other-end side bent parts 5a and clearance parts 7a, 7b. The stent has three or more regions, relative to the central axis of the stent 1, in each of which the one-end side bent part 4a of one of the two adjacent annular bodies 2 has neared the other-end side bent part 5a of the other annular body 2. The stent has an adjacent region deformation control part at minimum three adjacent regions, each including a first protrusion line part 6a entering the clearance part 7a of the other annular body spread along one side of the adjacent region from one adjacent annular body, and a second protrusion line part 6b entering the clearance part 7b of one annular body spread along the other side of the adjacent region from the other adjacent annular body. <；P>；COPYRIGHT: (C)2010,JPO&INPIT
