PROBLEM TO BE SOLVED: To provide a balloon catheter further improved in re-folding properties (re-wrapping properties), compared to the case of providing straight reinforcements in the longitudinal direction, and to provide a balloon.SOLUTION: A balloon catheter includes a balloon 20 which is provided in a distal portion of a catheter body, and enlarged in diameter by injecting fluid through the catheter body. The balloon 20 has spiral stripes 22 which extend in the longitudinal direction of the catheter body while revolving around the catheter body, and are relatively different in properties such as rigidity, compared to a part of films 21 on both revolving direction sides.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】長手方向に直線的な筋を設けた場合と比べ、再折畳み性(リラップ性)をさらに向上させたバルーンカテーテルおよびバルーンを提供する。【解決手段】カテーテル本体の遠位部に設けられカテーテル本体を通じて流体が注入されることより拡径するバルーン20を有するバルーンカテーテルであって、バルーン20は、カテーテル本体を周回しながらカテーテル本体の長手方向に延びる、周回方向両側の膜21の部分と比較して相対的に、剛性等の性状が異なる螺旋形の筋22を有する。【選択図】図4
