PROBLEM TO BE SOLVED: To make it possible to easily insert a puncture needle into a blood vessel with weaker force during puncturing of second time or after.SOLUTION: A puncturing needle 1 has an inclined end face 20 at the distal end of the needle and a puncturing opening 101a radially opening and tearing to a proximal side from the start point of a deep side to a puncturing direction is formed in the surface of the blood vessel by puncturing with the inclined end face 20 directed downward. The inclined end face 20 is inclined to the central axis A of the puncturing needle, a pointed end part 21 is formed in the distal end of the inclined end face 20, and the pointed end part 21 is curved to the central axis A side of the needle.COPYRIGHT: (C)2012,JPO&INPIT【課題】二回目以降の穿刺時に、血管に針をより小さい力で容易に挿入可能にする。【解決手段】穿刺針1は、針の先端に傾斜端面20を有し、傾斜端面20を下向きにして穿刺することによって、その穿刺方向に対して奥側を起点に手前側に放射状に開裂する穿刺口101aが血管表面に形成される。傾斜端面20は、針の中心軸Aに対し傾斜しており、傾斜端面20の先端には、尖端部21が形成され、尖端部21が針の中心軸A側に曲がっている。【選択図】図6
