PROBLEM TO BE SOLVED: To provide an electrode catheter capable of improving operability and also improving torque resistance of a catheter distal end part.SOLUTION: The electrode catheter 10 includes: a catheter body part 30 having a lead wire hole 322 and a catheter distal end part 40 in which an electrode 42 is provided on the outer peripheral side, and a core wire 62 having a part that extends toward a direction of separating from the extending direction of the catheter body part 30 is inserted to an inner cylinder part 41a. A projection part 62a projected from the catheter distal end part 40 is present on the proximal end side of the core wire 62, a rotation prevention part 62b is present at the exposed part 62a, an engaging member 52 for which rotation with respect to the catheter body part 30 is regulated is present between the catheter body part 30 and the catheter distal end part 40, and the engaging member 52 is provided with a notched part to which the rotation prevention part 62b is inserted, and which is abutted to the rotation prevention part 62b to regulate the rotation of the core wire 62.COPYRIGHT: (C)2013,JPO&INPIT【課題】操作性を向上させることが可能であると共に、カテーテル先端部の耐トルク性を向上させることが可能な電極カテーテルを提供する。【解決手段】電極カテーテル10には、導線用孔322を有するカテーテル本体部30と、電極42が外周側に設けられ、内筒部41aにカテーテル本体部30の延伸方向から離れる向きに向かって延伸する部分を有するコアワイヤ62を挿通させているカテーテル先端部40と、を有し、コアワイヤ62の基端側にはカテーテル先端部40から突出する突出部分62aが存在し、この露出部分62aには回転防止部62bが存在し、カテーテル本体部30とカテーテル先端部40の間にはカテーテル本体部30に対しての回転が規制されている係合部材52が存在し、係合部材52には、回転防止部62bが差し込まれると共に回転防止部62bに当接してコアワイヤ62の回転を規制する切欠部が設けられている。【選択図】図1
