PROBLEM TO BE SOLVED: To provide a puncture device improving a puncture track of a puncture needle and avoiding "double pricking" of the puncture needle.SOLUTION: A lancet device comprises a puncture member and a pressing member. In the lancet device, the puncture member comprises a needle shaft component including a puncture needle, a driving shaft component, and an intermediate shaft component therebetween, the needle shaft component, the driving shaft component and the intermediate shaft component being connected to each other via a joint component. When a pricking operation is performed, the driving shaft component of the puncture member is at least partly rotated by being pressed by a pressing action of the pressing member, and thereby the intermediate shaft component of the puncture member is displaced causing the needle shaft component to move in a puncture direction.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】穿刺針の穿刺軌道が向上すると共に穿刺針の“二度付き”が回避された穿刺デバイスを提供すること。【解決手段】穿刺部材および押圧部材を有して成るランセット・デバイスが提供される。かかるランセット・デバイスでは、穿刺部材が、穿刺針を備えた針軸部と、駆動軸部と、それらの間の中間軸部とを有して成り、針軸部と駆動軸部と中間軸部とがそれぞれ関節部によって相互に連結されて成る。穿刺に際して押圧部材の押圧によって穿刺部材の駆動軸部が少なくとも部分的に回動し、それによって、穿刺部材の中間軸部が変位して針軸部が穿刺方向へと移動する。【選択図】図1
