PROBLEM TO BE SOLVED: To provide a puncturing device which performs reliable puncturing, is rapidly operated with less pain, and is suitable for disposal.SOLUTION: The puncturing device 10 includes: a needle body 14 a needle passage 30 for guiding the needle body 14 in an axial direction a push rod 17 partially projected from a case 12 in an initial state, and arranged so as to be perpendicularly movable with respect to the axial direction and a first cam surface 50 arranged in the case 12. The push rod 17 includes: a second cam surface 52 which is brought into slidable contact with the end part of the needle body 14 when pushed down, and pushes out the needle body 14 in the axial direction an elastic arm 54 which is elastically compressed by slidable contact with the upper end part 50b of the first cam surface 50, is extended while being brought into slidable contact with the first cam surface 50 after coming out of the upper end part 50b, and elastically performs energization to allow the push rod 17 to further move and a recession part 56 with which the tag 42b of the needle body 14 is engaged after the second cam surface 52 passes an axis C.COPYRIGHT: (C)2009,JPO&INPIT【課題】確実な穿刺が可能であり、しかも動作が速くて痛みが少なく、ディスポーザルに適した穿刺装置を提供する。【解決手段】穿刺装置10は、針体14と、針体14を軸方向に案内する針通路30と、初期状態で一部がケース12から突出し、軸方向に対して直角に移動可能に設けられたプッシュロッド17と、ケース12に設けられた第1カム面50とを有する。プッシュロッド17は、押し下げられることにより針体14の端部に摺接して、該針体14を軸方向に押し出す第2カム面52と、第1カム面50の上端部50bに摺接して弾性圧縮し、該上端部50bを抜けた後に第1カム面50に摺接しながら伸びてプッシュロッド17がさらに移動するように弾性付勢する弾性アーム54と、第2カム面52が軸Cを通過した後、針体14のタグ42bが係合する凹部56とを有する。【選択図】図4
