PROBLEM TO BE SOLVED: To provide a biopsy device capable of collecting tissue existing an outside in a radial direction of the biopsy device without making a biopsy device configuration that performs cutting perform operation, such as opening, inside an organism.SOLUTION: A biopsy device 100 according to the present invention includes: a long and hollow outer cylinder 10 protrusion parts 20a, 20b, 20c partially extending to a longitudinal direction tip from an outer periphery of a tip part in a longitudinal direction of the outer cylinder puncture parts 21a, 21b, 21c capable of being punctured to tissue, provided at tips in a longitudinal direction of the respective protrusion parts and cutting parts 22a, 22b, 22c capable of cutting the tissue by rotation around an axis being the longitudinal direction of the outer cylinder, provided at side edges of the respective protrusion parts.COPYRIGHT: (C)2015,JPO&INPIT【課題】生体内において、生検デバイスの切断を行う構成に開くような動作をさせなくても、生検デバイス先端の径方向外方に存在する組織を採取可能な生検デバイスを提供する。【解決手段】本発明に係る生検デバイス100は、長尺状かつ中空の外筒10と、外筒の長手方向における先端部外周から部分的に長手方向先端にさらに伸延する突出部20a、20b、20cと、突出部の長手方向における先端に設けられ、組織への穿刺が可能な穿刺部21a、21b、21cと、突出部の側縁に設けられ、外筒の長手方向を軸とした軸周りの回転によって組織の切断が可能な切断部22a、22b、22cと、を備える。【選択図】図1
