PROBLEM TO BE SOLVED: To provide a suture needle improved in piercing property by reducing piercing resistance in piercing a biological tissue.SOLUTION: In this suture needle, a cutting edge part 5 of a needle tip part 3 of a needle body 1 is formed in a triangular or other polygonal cross section, and the cutting edge part of the needle tip part comprises a cutting edge 6. The cutting edge 6 is formed by polishing a ground cutting edge 60 formed by grounding, by jet machining with a polishing material 7 formed by mixing and dispersing abrasive grains 7b in a base material 7a formed of an elastic body. By jetting the polishing material 7 to the cutting edge part, the ground cutting edge is polished and edged sharp to improve sharpness.COPYRIGHT: (C)2009,JPO&INPIT【課題】生体組織に刺入する際の刺通抵抗を減少させて刺通性を向上し得る縫合針を提供する。【解決手段】針本体1の針先部3の刃部5が三角形その他の多角形断面に形成された縫合針であって、針先部の刃部は切刃6を備えている。切刃6は研削加工により形成された研削加工切刃60を、弾性体よりなる母材7aに砥粒7bを配合分散してなる研磨材7の噴射加工により研磨して構成する。研磨材7を刃部に対して噴射することにより、研削加工切刃は研磨されて鋭利に刃立てして切れ味を向上させる。【選択図】図1
