| 摘要 |
PROBLEM TO BE SOLVED: To attain a structure capable of stably molding a needle holding tool 11a with excellent quality.SOLUTION: A needle holding tool is molded by injection molding of a high polymer material, and includes a cylindrical part 14a and a reinforced plate part 15a. In the needle holding tool, there is no protrusion part projecting in a radial direction on the inner peripheral surface of the cylindrical part 14a, and a resistance against force extracting a mold for injection molding of the high polymer material is made larger at a portion close to one end in an axial direction than a portion close to the other end in the cylindrical part 14a with the reinforced plate part 15a as a boundary. |
