PROBLEM TO BE SOLVED: To provide a blood vessel ablation device and a blood vessel ablation method excellent in workability of blood vessel harvesting.SOLUTION: A blood vessel ablation device 100P includes a guide part 200 inserted into a blood vessel including a reinforcement part 220P that expands or contracts the diameter of the blood vessel, and a movable part 300 arranged around the guide part 200 that is movable with respect to the guide part 200. The movable part 300 arranged around the guide part 200 is moved along the guide part 200 in a state that the diameter of the blood vessel is expanded or contracted by the guide part 200 so that the blood vessel is ablated in a state of being covered with tissues positioned in the surrounding.SELECTED DRAWING: Figure 28COPYRIGHT: (C)2016,JPO&INPIT【課題】血管採取の作業性に優れる血管剥離デバイスおよび血管剥離方法を提供する。【解決手段】血管剥離デバイス100Pは、血管内に挿入され、血管を拡径または縮径する補強部220Pを備えるガイド部200と、ガイド部200の周囲に配置され、ガイド部200に対して可動な可動部300と、を有し、ガイド部200によって血管を拡径または縮径した状態で、ガイド部200の周囲に配置された可動部300をガイド部200に沿って移動することで、血管を周囲に位置する組織に覆われた状態で剥離する。【選択図】図28