PROBLEM TO BE SOLVED: To provide a stent delivery system in which portions disposed at an inner peripheral side of a narrowed part bent in a stent are less prone to be overlapped with each other.SOLUTION: The stent delivery system includes circulation parts 2 each formed of a linear member 1a of a stent that annually or spirally extends to go round the outer periphery of a balloon. The plurality of circulation parts 2 are provided in the axial direction of the balloon. Each circulation pat 2 includes: in an extension direction where the linear member extends, a dense part 6 in which an occupation density occupied by the linear member 1a is large and sparse parts 5 in the extension direction, where the occupancy density occupied by the linear member 1a is small. The respective dense parts 6, 6,... in the plurality of circulation parts are aligned in the axial direction on the outer circumference of the balloon and the respective sparse parts 5, 5,... in the plurality of circulation parts are aligned in the axial direction on the outer periphery of the balloon.COPYRIGHT: (C)2015,JPO&INPIT【課題】ステントにおいて屈曲した狭窄部の内周側に配置された部位同士が重なり難いデリバリーシステムを提供する。【解決手段】ステントデリバリーシステムは、ステントの線状部材1aが環状又は螺旋状に延びて、バルーンの外周を一周してなる周回部2を有し、周回部2は、バルーンの軸方向に複数設けられ、周回部2は、線状部材が延びる延出方向において、線材部材1aが占有する占有密度が大きい密部6と、延出方向において、線状部材1aが占有する占有密度が小さい疎部5とを有し、複数の周回部におけるそれぞれの密部6,6・・は、バルーンの外周で軸方向に並び、複数の周回部におけるそれぞれの疎部5、5・・は、バルーンの外周で軸方向に並んでいることを特徴とする。【選択図】図3
