A medical puncture needle according to the present invention includes a distal end portion including a needle tip, and a rod-shaped main body portion continuous with the distal end portion, the distal end portion includes a blade surface, and the blade surfaces are mutually connected. A first blade surface portion and a second blade surface portion that form a blade edge having the needle tip as one end by an intersecting ridge line, and a third blade surface portion that is continuous with the first blade surface portion and the second blade surface portion on the main body portion side. The third blade surface portion has a convex curved surface.本発明に係る医療用の穿刺針は、針先を含む先端部と、当該先端部と連続する棒状の本体部と、を備え、前記先端部は刃面を備え、前記刃面は、互いが交差する稜線により前記針先を一端とする刃縁を形成する第１刃面部及び第２刃面部と、前記第１刃面部及び前記第２刃面部と前記本体部側で連続する第３刃面部と、を備え、前記第３刃面部は凸型曲面を有する。
