Disclosed is the bending operation of the tip I provide a method for producing an improved catheter and catheter . A catheter 100 includes a large diameter resin tube which forms the large diameter lumen , and the operating line capillary of small diameter which is located outside of the lumen , the distal end of the catheter is inserted through the operating line capillary and the operation line coupled to a distal end has a reinforcing layer is a coil covering both the large-diameter resin tube and operating line tubules , and distal of the distal end and the operation line of the large diameter tubular resin pipe until the distal side of the end portion including an end , and a reinforcement layer , and the operation wire inserted through the reinforcing layer is extended , the maximum curvature of the catheter according to the operation of the operating lines at the distal end near the terminal end and has a curvature maximum point that is . [ Selection Figure ] Figure 1【課題】先端の屈曲操作性が改善されたカテーテルおよびカテーテルの製造方法を提供する。【解決手段】カテーテル100は、大径のルーメンを形成している大径樹脂管と、ルーメンの外側に配置された小径の操作線細管と、操作線細管に挿通され遠位端部がカテーテルの遠位端部に連結された操作線と、大径樹脂管および操作線細管を共に被覆するコイルである補強層と、を有し、大径樹脂管の遠位端および操作線細管の遠位端を含む終端部よりも遠位側まで、補強層と、補強層に挿通された操作線とが延在しており、終端部の遠位側近傍において操作線の操作によるカテーテルの曲率が最大となる曲率最大点を有する。【選択図】図1
