MEDICAL INSTRUMENT

• Main Authors: YAMAGUCHI KENJIRO, HAYASHI NOBUAKI
• Format: Patent
• Language: English; Japanese
• Published: 06.08.2020
• 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 medical instrument capable of steeply bending the tip of a tubular body.SOLUTION: A tubular body of a catheter includes a main pipe 20, a wire reinforcement layer including a reinforcement wire 21 wound around the main pipe 20, and an outer layer covering the wire reinforcement layer, part of which is formed by covering up to the outer face of the main pipe 20. The wire reinforcement layer includes a first part 23 and a second part 24 on a more distal side than the first part 23 in a length region different from the first part 23 in an axial direction of the tubular body. The outer face of the main pipe 20 is formed with a groove 51 extending in a direction different from a winding direction of the reinforcement wire 21 in a part opposed to a transition region 25 between the first part 23 and the second part 24, and part of the reinforcement wire 21 and the outer layer 28 are fitted into the groove 51.SELECTED DRAWING: Figure 4 【課題】管状本体の先端部を急峻に屈曲させることが可能な医療機器を提供する。【解決手段】カテーテルが備える管状本体は、主管２０と、主管２０の周囲に巻回された補強ワイヤ２１を含むワイヤ補強層と、ワイヤ補強層を覆いつつ、一部が主管２０の外面に至るまで含浸して形成された外層と、を含む。ワイヤ補強層は、第１部位２３と、管状本体の軸線方向における第１部位２３とは異なる長さ領域において、第１部位２３よりも遠位側にある第２部位２４と、を備える。主管２０の外面には、第１部位２３と第２部位２４との間の遷移領域２５に対向する部位において、補強ワイヤ２１の巻回方向とは異なる方向に延在する溝５１が形成されており、溝５１には、補強ワイヤ２１の一部及び外層２８が嵌入している。【選択図】図４