The position gap, extending to long term in specified position of the tubular organ, be able to detain accurately, it is possible to fetch from inside the tubular organ smoothly to desire time, it offers sutento. Way this sutento (10), it is provided in the part which is covered sutento itself of the metal make (20) with, this sutento itself (20) the cover component of the resin make which covers at least the portion of rim (30) with, aforementioned sutento itself (20), the aforementioned cover component of rim (30) by close to the inner wall of the aforementioned tubular organ does and sutento (10) the swelling section which suppresses movement (40) with it has, the aforementioned swelling section (40), as lap in direction at specified width and it extends to axial direction at specified length, rises gradually and gradually becomes lowThe form which is extended smoothly is formed.管状器官の所定位置に位置ずれなく、長期に亘って正確に留置でき、所望時期に管状器官内からスムーズに取り出すことができる、ステントを提供する。このステント(10)は、金属製のステント本体(20)と、このステント本体(20)の外周の少なくとも一部を覆う樹脂製のカバー部材(30)と、前記ステント本体(20)の外周の、前記カバー部材(30)により覆われた部分に設けられ、前記管状器官の内壁に密接してステント(10)の移動を抑制する膨出部(40)とを備え、前記膨出部(40)は、周方向に所定幅でかつ軸方向に所定長さで伸びると共に、次第に盛り上がり次第に低くなるように滑らかに突出した形状をなしている。
