PROBLEM TO BE SOLVED: To provide a method for easily obtaining a porous fiber that includes a functional agent a method for obtaining a porous fiber that has a desired fiber pore size a porous fiber including a functional agent that is obtained by the methods and a porous fiber for sustained releasing of an agent including a functional agent that is obtained by the methods.SOLUTION: The method for producing a porous fiber including a functional agent comprises steps of: melt spinning of a fiber from a composition including biodegradable polyester quenching the melt spun fiber to a temperature of a glass transition temperature of the biodegradable polyester +15°C or lower cold storing the quenched fiber at a temperature of a glass transition temperature of the biodegradable polyester +15°C or lower to obtain a porous fiber and including a functional agent in the porous fiber.COPYRIGHT: (C)2013,JPO&INPIT【課題】簡便に機能性薬剤を内包する多孔性繊維が得られる方法;所望の繊維の孔のサイズを有する多孔性繊維が得られる方法;同方法により得られる機能性薬剤を内包する多孔性繊維;及び同方法により得られる機能性薬剤を内包する薬剤徐放用多孔性繊維を提供すること。【解決手段】生分解性ポリエステルを含む組成物から繊維を溶融紡糸する工程と、前記溶融紡糸した繊維を生分解性ポリエステルのガラス転移点温度+15℃以下に急冷する工程と、前記急冷した繊維を生分解性ポリエステルのガラス転移点温度+15℃以下に保冷し、多孔性繊維を得る工程と、前記多孔性繊維に機能性薬剤を内包させる工程、とを有する、機能性薬剤を内包する多孔性繊維の製造方法。【選択図】図1
