PROBLEM TO BE SOLVED: To provide a puncture needle wherein grinding processing burr is removed and the thrust resistance of a blade part is reduced, and a method for manufacturing the same.SOLUTION: The puncture needle 1 includes a needle tip wherein a first blade surface 12 having a cut surface making an acute angle with respect to the longitudinal axis of a needle tube 10 made from a metal tube, a pair of ground surfaces 13 formed by grinding the leading end part of the first blade surface in a manner linearly symmetric to the center axis of a needle tube from both sides of a tube axis and a cutting edge 14 being the ridgeline of tube thickness where the first blade surface and a pair of the ground surfaces or a pair of the ground surfaces cross each other are formed to one end of the needle tube 10. The blade edge is formed by a curved line due to the recess of the tube thickness. The blade after grinding processing is subjected to ion sputtering.COPYRIGHT: (C)2012,JPO&INPIT【課題】研削加工バリも取除かれ、刃部分の刺通抵抗が低減された穿刺針およびその製造方法の提供。【解決手段】金属パイプからなる針管10の一端に、該針管の長手軸に対し鋭角の切断面をもつ第1の刃面12と、該第1の刃面の先端側部分を管軸の両側から針管の中心軸に線対称に研削して形成された一対の研削面13と、該第1の刃面と該一対の研削面、または該一対の研削面同士の交差する管肉の稜線で刃縁14が形成された針先を有する穿刺針1であって、前記刃縁が管肉の凹みによる曲線で形成された穿刺針。研削加工後の刃をイオンスパッタリングする。【選択図】図2
