BALLOON FOR BALLOON CATHETER, BALLOON CATHETER EQUIPPED WITH THE SAME, AND MANUFACTURING METHOD OF BALLOON CATHETER

• Main Authors: HAMABUCHI TAKANOBU, KOJIMA MASAHIRO, NAKANO YOSHIKI, TSUETA MASATO
• Format: Patent
• Language: English; Japanese
• Published: 28.05.2024
• 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 for a balloon catheter that can be folded easily so that the outer diameter of the balloon is reduced in the state that the balloon is shrunk, and can improve insertion performance into the vascular lumen.SOLUTION: A balloon for a balloon catheter including an outer layer 20b and an inner layer 20a composed of a material whose Shore D hardness is lower than that of the outer layer 20b includes a protruding part 28 protruding outward in a radial direction y1, and extending in a longitudinal axis direction x1, and a plurality of blade shaped parts 40 in a shrunk state. In the cross section perpendicular to the longitudinal axis direction x1 in a straight piping section 23, each of the blade shaped parts 40 includes a blade central part 41 including a middle point P1 of the length of an external surface of the blade shaped part 40. In the cross section perpendicular to the longitudinal axis direction x1 in the straight piping section 23, the thickness Tc of the outer layer 20b is larger than the thickness Ta of the inner layer 20a in a region where the protruding part 28 is present, and the thickness Tc of the outer layer 20b is smaller than the thickness Ta of the inner layer 20a in the blade central part 41.SELECTED DRAWING: Figure 5 【課題】バルーンの収縮状態にてバルーンの外径が小さくなるように折り畳みやすく、血管内腔の挿通性を向上できるバルーンカテーテル用バルーンを提供する。【解決手段】外層２０ｂと、外層２０ｂよりもショアＤ硬度が低い材料から構成される内層２０ａと、を有しているバルーンカテーテル用バルーンであって、径方向ｙ１の外方に突出しており、長手軸方向ｘ１に延在している突出部２８を有し、収縮状態で複数の羽根形状部４０を有し、直管部２３での長手軸方向ｘ１に垂直な断面において、羽根形状部４０は、羽根形状部４０の外表面の長さの中点Ｐ１を含む羽根中央部４１を有しており、直管部２３での長手軸方向ｘ１に垂直な断面において、突出部２８が存在している領域では、外層２０ｂの厚みＴｃが内層２０ａの厚みＴａよりも大きく、羽根中央部４１では、外層２０ｂの厚みＴｃが内層２０ａの厚みＴａよりも小さい。【選択図】図５