METHOD OF MANUFACTURING BALLOON CATHETER AND MOLD

• Main Authors: KOGA YOJIRO, KOJIMA MASAHIRO, NAKANO YOSHIKI, TSUETA MASATO
• Format: Patent
• Language: English; Japanese
• Published: 26.07.2021
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

To provide a method of manufacturing a balloon catheter which hardly causes a phase shift of a protruding part of a parison before and after expanding the parison and allows one-step molding, and a mold used for manufacturing the balloon catheter.SOLUTION: A method of manufacturing a balloon catheter including a shaft extending in a far-near direction and a balloon provided on a proximal side of the shaft and having a protruding part 50 on an outer surface, includes: a step of preparing a cylindrical parison 10 having the protruding part 50 on the outer surface; a step of preparing a mold 1 having a mold body 2 where the parison 10 is inserted and a movable part 3 provided on the mold body 2 and movable in a radial direction of the parison 10; a step of arranging the protruding part 50 in an internal part of the movable part 3; and a step of expanding the parison 10 by applying a pressure on the inside of the parison 10.SELECTED DRAWING: Figure 1 【課題】パリソンの拡張の前後でパリソンの突出部の位相ずれが起こりにくく、１段成形が可能であるバルーンカテーテルの製造方法、およびバルーンカテーテルの製造に用いる金型を提供する。【解決手段】遠近方向に延在しているシャフトと、シャフトの遠位側に設けられ、外側面に突出部５０が設けられているバルーンと、を有するバルーンカテーテルの製造方法であって、外側面に突出部５０を有している筒状のパリソン１０を準備する工程と、パリソン１０を内挿する金型本体２と、金型本体２に設けられ、パリソン１０の径方向に移動可能である可動部３と、を有する金型１を準備する工程と、可動部３の内方部に突出部５０を配置する工程と、パリソン１０の内部を加圧し、パリソン１０を拡張させる工程と、を含む。【選択図】図１