An electrode catheter which is capable of tip deflection operation and which comprises: a catheter shaft (10) that has a flexible part (10A) on a distal end portion (11) a control handle (20) a catheter distal end portion (30) that is connected to the distal end side of the catheter shaft (10) and has a core wire (35) made of shape memory alloy extending inside an insulating tube (33) multiple ring-shaped electrodes (42) lead wires (50) that are connected to each of the ring-shaped electrodes (42) and an operating wire (60) for deflecting the flexible part of the catheter shaft (10), a base end portion (352) of the core wire (35) and a distal end portion (61) of the operating wire (60) being joined together. According to this electrode catheter, sufficient space can be reserved inside the catheter shaft for extending multiple lead wires.一種前端偏向操作可能的電極導管,係具備:在前端部(11)具有可撓部分(10A)的導管軸(10);控制把手(20);導管前端部(30),其係連接在導管軸(10)的前端側,且在絕緣管(33)的內部延在有由形狀記憶合金形成的芯線(35)而成;複數個環狀電極(42);連接在環狀電極(42)的各電極的導線(50);以及使導管軸(10)的可撓部分撓曲用的操作用線材(60),並接合芯線35的基端部(352)、與操作用線材(60)的前端部(61)。根據這樣的電極導管,可在導管軸的內部確保讓複數個導線延在用的充分的空間。30‧‧‧導管前端部35‧‧‧芯線352‧‧‧基端部70‧‧‧管狀繫留構件(固定構件)80‧‧‧固著材61‧‧‧前端部11L‧‧‧第1管腔60‧‧‧操作用線材111‧‧‧多腔管33‧‧‧絕緣管90‧‧‧接著劑332‧‧‧基端部11‧‧‧導管軸的前端部10‧‧‧導管軸50‧‧‧導線15‧‧‧編織管13L‧‧‧第3管腔L35‧‧‧長度10A‧‧‧可撓部分
