PROBLEM TO BE SOLVED: To provide a puncture device capable of mitigating pain experienced by a patient when puncturing.SOLUTION: A puncture device according to one embodiment of the present invention includes: a skin penetration member including a needle and a holding member; and a skin extension member including a skin contact member and a plurality of resilient valves closed in a direction of a skin contact surface. The skin penetration member is disposed at an opposite side of the skin contact surface of the skin extension member, and the skin penetration member and the skin extension member are movably engaged with each other. The plurality of resilient valves are pushed open by pressing the skin penetration member in the direction of the skin contact surface, and tips of the plurality of resilient valves and the needle are projected from the skin contact surface.SELECTED DRAWING: Figure 3C【課題】穿刺する際に患者が受ける痛みを緩和することができる穿刺デバイスを提供することを目的とする。【解決手段】本発明の一実施形態による穿刺デバイスは、針と保持部材とを含む皮膚穿通部材と、皮膚接触部材と皮膚接触面の方向に閉じた複数の弾発性弁とを含む皮膚伸張部材を有し、皮膚穿通部材は、皮膚伸張部材の皮膚接触面とは反対側に配置され、皮膚穿通部材と皮膚伸張部材とは可動的に係合し、複数の弾発性弁は、皮膚穿通部材を皮膚接触面の方向に押圧することにより押し開かれ、複数の弾発性弁の先端部と、針とが、皮膚接触面から突出する。【選択図】図3C