< Topic >The occasion where organism organization is seamed making use of the medical application seam needle which curves, the thorn resistance is made even.SolutionsFrom chamber body 1 applying ahead 2 the needle, thickly the direct needle-shaped material A where seeing becomes small, the roller through 11 which possesses adding management 11a and segregation component 21, inserting between the belts 12 which are coiled round to roller 11, as it turns roller 11, winding belt 12, the pushing overpowering in adding management 11a, it curves bending method. Seam needle B is formed as the unbounded section which does not have the times when portion of the advanced side which includes ahead 2 the needle is restrained to the adding management 11of a roller 11, is formed as the bend where the bending to which the part where at the same time the aforementioned unbounded section is excluded parallels to the adding management 11of a roller 11 is administered.【課題】湾曲した医療用縫合針を用いて生体組織を縫合する際に、刺通抵抗を一様にする。【解決手段】曲げ加工方法は、胴部1から針先2にかけてが太みが小さくなる直針状の素材Aを、加工面11aを有するローラー11と離隔部材21を介してローラー11に巻き付くベルト12の間に挿入してローラー11を回転させると共にベルト12を巻き付けて加工面11aに押圧して湾曲させる。縫合針Bは、針先2を含む先端側の一部がローラー11の加工面11aに拘束されることのない非拘束部として形成され、且つ前記非拘束部を除く部分がローラー11の加工面11aに沿った曲げ加工が施された湾曲部として形成されている。
