PROBLEM TO BE SOLVED: To provide a medical device which enables an implant to be easily embedded in an organism, which makes a burden on a patient light and which makes patient safety high, and a puncture method.SOLUTION: A medical device 100 includes an insertion part 230 for bringing about an expanded state by expanding a skin-cut part 2000 being a part, which is formed by pre-incising a part for starting a puncture of a puncture needle, of a surface of an organism, before an insertion hole enabling insertion of an implant 9 into body tissue is formed by performing a rotational operation of a puncture member 3 for performing the puncture for the body tissue.COPYRIGHT: (C)2015,JPO&INPIT【課題】インプラントを容易に生体内に埋設することができ、かつ、患者の負担が少なく、患者の安全性が高い医療用具および穿刺方法を提供すること。【解決手段】医療用具100は、生体組織を穿刺する穿刺部材3を回動操作して、生体組織にインプラント9を挿入可能な挿入孔を形成するのに先立って、生体表面の穿刺針の穿刺が開始される部分を予め切開して形成された部分である切皮部2000を拡張して拡張状態とする挿入部230を有している。【選択図】図41
