PROBLEM TO BE SOLVED: To facilitate a recovery of a catheter even if an embolic agent becomes hard, while preventing a back flow of the embolic agent by a balloon.SOLUTION: A balloon catheter 10 includes: a long outer pipe 18 a long inner pipe 20 disposed inside the outer pipe 18 and a balloon 16 that is disposed at a position on the outer peripheral surface of the inner pipe 20 and on a base end side of a discharge port 24a, and that can be expanded in the radially outside direction of the inner pipe 20. Also, the balloon catheter 10 is provided with removal parts 40 respectively at a prescribed position of the outer pipe 18 nearer to the base end side with respect to the base end of the balloon 16, and at a prescribed position of the inner pipe 20 nearer to the base end side with respect to the top end of the balloon 16. The removal parts 40 enable removals of an outer pipe collection part 48 and an inner pipe collection part 52 from an outer pipe retention part 46 and an inner pipe retention part 50.COPYRIGHT: (C)2015,JPO&INPIT【課題】バルーンにより塞栓剤のバックフローを防止しつつ、塞栓剤が硬化してもカテーテルの回収を容易に行う。【解決手段】バルーンカテーテル10は、長尺な外管18と、外管18内に配置される長尺な内管20と、内管20の外周面且つ吐出口24aの基端側の位置に設けられ、内管20の径方向外側に拡張可能なバルーン16とを備える。また、バルーンカテーテル10は、バルーン16の基端よりも基端側の外管18の所定位置、及びバルーン16の先端よりも基端側の内管20の所定位置の各々には離脱部40が設けられる。離脱部40は、外管留置部46及び内管留置部50から、外管回収部48及び内管回収部52を離脱可能とする。【選択図】図1
