Being sutento in order to insert to the fluid pipe of the body of the person or the animal, it has the tubular structure which possesses the plural circumferential direction parts which extending are present in general in circumferential direction with the end which opposes to lengthwise, the circumferential direction part is connected to the circumferential direction part which it adjoins with length direction according to the length of the tubular structure, the end of the plural circumferential direction parts which it adjoins is not inside the parallel aspect, or and/or tries not to have the aforementioned end of the identical circumferential direction part inside the parallel aspect, the end which is not parallel, due to the tubular structure flows and the lumen stipulatesIn order to be done, sutento where it is arranged according to the length of the tubular structure, inside the fluid pipe when non even curved line flows, flows due to the tubular structure and can give the lumen.< Selective figure >Figure 2ヒト又は動物の身体の流体導管へ挿入するためのステントであって、縦方向に対向する端部を持って概ね円周方向に延在する複数の円周方向部分を有する管状構造体を備え、円周方向部分は管状構造体の長さに沿って長さ方向で隣接する円周方向部分へ接続され、隣接する複数の円周方向部分の端部が平行面内にないか、及び/又は同一の円周方向部分の前記端部が平行面内にないようにされ、平行でない端部は、管状構造体によって流れルーメンが規定されるように、管状構造体の長さに沿って配置され、流体導管内を非平坦な曲線が流れるときには、管状構造体によって流れルーメンが与えられるステント。【選択図】図2