< Topic >The margin of the collapsing and the warping which the needle first it occurs is expanded without giving adverse effect to the manipulation by the doctor the case of suture operation, or strength of the needle tip part improves.SolutionsThe medical application suture needle where ahead the needle which the body tissue the thorn is done (1) was formed (A) in the Tip, ahead the needle in the thickness direction of the material of the medical application suture needle (1) size (d), thickness of the material of the medical application suture needle features that it is value of 5% or less (D).【課題】縫合手術の際に医師による操作に悪影響を与えることなく針先に生じたつぶれや曲がりの限界を広げ、或いは針先部分の強度を向上させる。【解決手段】先端に生体組織を刺通する針先(1)が形成された医療用縫合針(A)であって、医療用縫合針の素材の太さ方向における針先(1)の寸法(d)が、医療用縫合針の素材の太さ(D)の5%以下の値であることを特徴とする。