PROBLEM TO BE SOLVED: To provide a balloon deflation aid capable of rewinding a balloon quickly with a simple operation, regardless of the state of the deflated balloon after being inflated.SOLUTION: In a balloon deflation aid having a hollow storage part 41 through which a catheter shaft 11 having a balloon 12 is inserted in a shaft direction, and a holding part 42 provided in the storage part 41, the holding part 42 is formed of a plurality of torsion parts 50 and 51 in contact with the balloon 12, and at least one torsion part 51 is rotatable in the circumferential direction in the contact state with the balloon 12 with respect to the other torsion part 50.SELECTED DRAWING: Figure 8【課題】拡張後に収縮したバルーンの状態によらず、簡易な操作で迅速にバルーンを再巻回できるバルーン収縮補助具を提供する。【解決手段】バルーン１２を有するカテーテルシャフト１１が軸方向に沿って挿通される中空状の収納部４１と、収納部４１に設けられる保持部４２と、を有し、保持部４２は、バルーン１２に接する複数の捩り部材５０，５１によって形成され、少なくとも一つの捩り部材５１は、他の捩り部材５０に対して、バルーン１２に接した状態で周方向に回動可能とされる。【選択図】図８
