PROBLEM TO BE SOLVED: To provide a tip deflection movable catheter that has good operability and can greatly deflect a catheter distal end, and furthermore rarely causes damage in wire.SOLUTION: An operation part 3 has a first turning piece 40 turnably provided to a fixing part 50 fixed to the proximal end of a sheath body 2 and with the proximal end 30a of first wire 30 mounted to an outer circumferential part 40a of a first turning radius R1, and a second turning piece 41 with the proximal end 31b of second wire 31 mounted to an outer circumferential part 41a of a second turning radius R2. Guide pulleys 60 are rotatably provided at predetermined intervals of arrangement to the fixing part 50 in the operation part 3, respectively. The proximal ends 30a, 31a of the wire 30, 31 are drawn substantially in parallel in the axial direction of the sheath body 2 from the proximal end of the sheath body 2 by the guide pulleys 60, and are guided to the outer circumferential part 40a of the first turning piece 40 and the outer circumferential part 41a of the second turning piece 41, respectively.COPYRIGHT: (C)2016,JPO&INPIT【課題】操作性が良好で、カテーテル遠位端を大きく偏向させることが可能であり、しかもワイヤに損傷が生じることが少ない先端偏向可動カテーテルを提供すること。【解決手段】操作部3が、シース本体2の近位端に固定される固定部50に対して回動自在に設けられ、第1ワイヤ30の近位端30aが第1回動半径R1の外周部40aに取り付けられる第1回動片40と、第2ワイヤ31の近位端31bが第2回動半径R2の外周部41aに取り付けられる第2回動片41と、を有する。操作部3内で固定部50に対して所定の配置間隔でガイド滑車60がそれぞれ回転自在に設けられている。ガイド滑車60により、シース本体2の近位端から当該シース本体2の軸方向に沿って略平行に引き出されるワイヤ30,31の近位端30a,31aを、それぞれ第1回動片40の外周部40aと第2回動片41の外周部41aとに導く。【選択図】図6A
