BALLOON CATHETER AND METHOD OF APPLICATION FOR THE SAME

• Main Authors: YAMADA JUTARO, OKAMURA YOSHIYUKI, KANEFUJI KEN, FUJINAKA JUNKO
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• 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 balloon catheter capable of surely imparting a force in the direction in which a constriction lesion in a branch part of the blood vessel is expanded.SOLUTION: A balloon catheter has an internal insertion member and a balloon fixed to the internal insertion member. A parallel projection shape of the balloon catheter in the vertical direction with respect to the axial direction of the internal insertion member has an outline of the internal insertion member and an outline of the balloon. The balloon has a non-fixed part between a proximal side fixing part and a distal side fixing part. When an axial direction distance of the internal insertion member at the non-fixed part of the balloon is L and pressure by which the balloon bursts after inner pressure is applied to the balloon is 100, equation (1) is satisfied.SELECTED DRAWING: Figure 2 【課題】血管の分岐部における狭窄病変を拡張する方向に力を確実に付与できるバルーンカテーテルを提供する。【解決手段】内挿部材と、該内挿部材に固定されているバルーンとを有するバルーンカテーテルであり、前記内挿部材の軸方向に対して垂直方向への前記バルーンカテーテルの平行投影形状は、前記内挿部材の外形線と、前記バルーンの外形線とを有し、前記バルーンは、近位側固定部と遠位側固定部の間に非固定部を有し、前記バルーンの非固定部における前記内挿部材の軸方向距離をＬとし、前記バルーンに内圧を印加して該バルーンが破裂する圧力を１００としたとき、下記式（１）を満足するバルーンカテーテル。【選択図】図２