To provide a puncture member detachment detection device capable of preventing erroneous detection as to whether or not a puncture member is detached.SOLUTION: A puncture member detachment detection device (1) comprises a puncture member (10) for puncturing a living body, and living body contact detection means (20) for detecting contact with the living body. The living body contact detection means (20) is provided at a contact portion with the living body in the puncture member (10). When detecting that the contact with the living body has been detached, the living body contact detection means (20) notifies an alarm transmitter (30) of a fact that the contact with the living body has been detached.SELECTED DRAWING: Figure 1【課題】穿刺部材が外れたか否かについての誤検出を防止することができる穿刺部材外れ検出装置を提供する。【解決手段】穿刺部材外れ検出装置（１）は、生体に穿刺する穿刺部材（１０）と、生体との接触を検出する生体接触検出手段（２０）と、を備える。生体接触検出手段（２０）は、穿刺部材（１０）における生体との接触部分に設けられる。生体接触検出手段（２０）は、生体との接触が外れたことを検知した場合に、生体との接触が外れたことをアラーム発信器（３０）へ知らせる。【選択図】図１
