Placement device of the stent-graft or stent, is disclosed member pushing for the device in particular. Member (62) includes a head (60) Push (64) and outside diameter decreasing unit push. Outside diameter decreasing unit (64), the wall thickness of the pushing member 62 is reduced, and as a result, the rigidity of the pushing member is reduced at the distal end. Transition in flexibility between the guide wire catheter This reduction in stiffness, extends beyond it and passes through the groove pushing member (62) inside (24) and a distal end pushing member (62) decreases. Therefore, it is possible to reduce the possibility of varying the stiffness gradually at the junction between the components of these two twists.ステントまたはステントグラフトの配置装置、特にその装置用の押し込み部材が開示される。押し込み部材(62)は、外径縮小部(64)と押し込み頭部(60)とを備える。外径縮小部(64)では、押し込み部材62の壁厚が低減し、その結果、押し込み部材の剛性が遠位側端において減少する。この剛性の減少により、押し込み部材(62)内部の溝を通過しかつ越えて延びるガイドワイヤカテーテル(24)と、押し込み部材(62)の遠位側端と、の間の可撓性の遷移が減少する。したがって、これら二つの構成要素間の接合点において徐々に剛性を変化させ、ねじれる可能性を低減することができる。
