A biopsy device capable of efficiently collecting a specimen even in the case of a living tissue, particularly a soft tissue. A biopsy device 100 according to the present invention is formed in a long shaft portion 10, a puncture portion 20 that is formed at a distal end in the longitudinal direction of the shaft portion, and punctures a living tissue, and is formed in the shaft portion. It has a screw part 30 for guiding a sample collected from the living body from the distal end side to the proximal side, and a screw cutter part 31 formed on the screw part for peeling the specimen from the living body. The screw cutter part is a puncture part A specimen is collected in a state of puncturing a living tissue. [Selection] Figure 1【課題】生体組織、特に軟組織の場合であっても効率よく検体を採取できる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、長尺状のシャフト部１０と、シャフト部の長手方向における先端に形成され、生体組織を穿刺する穿刺部２０と、シャフト部に形成され、生体から採取される検体を先端側から手元側に導くためのスクリュー部３０と、スクリュー部に形成され、検体を生体から剥離させるスクリューカッター部３１と、を有し、スクリューカッター部は、穿刺部を生体組織に穿刺した状態で検体を採取する。【選択図】図１
