Patent ID: 8679145
Filing Date: 2014-03-25
Classification: A61B

Abstract:
1. A puncture device comprising: a puncture needle cartridge including: a mounting member for holding the puncture needle cartridge such that the puncture needle cartridge can be inserted and removed therefrom; and a case mounted with the mounting member and held by the puncture device body, wherein the case includes a guiding portion for guiding a rotation of the mounting member about the axis of rotation, wherein the mounting member includes an external guided portion engaged with the guiding portion of the case, wherein the mounting member is engaged with the puncture needle holder and rotates together with the puncture needle holder about the axis of rotation by having the guided portion guided by the guiding portion as a result of being pressed by the puncture needle cartridge in a direction of mounting in the case, wherein the protective cap is prevented from rotating about the axis of rotation during the pressing of the puncture needle cartridge and is separated from the rod-like lancet body by the rotation of the mounting member about the axis of rotation, wherein the puncture needle holder includes cuts, wherein the mounting member includes internal projections, and wherein the cuts of the puncture needle holder are engaged by the internal projections of the mounting member, such that the puncture needle holder is held by the engagement of the cuts and the internal projections so as to limit a rotation of the puncture needle holder against the mounting member and about the axis of rotation.