An electrode catheter is provided with: a catheter shaft (10) an operating handle (20) provided with a connector (70) a tip electrode (31) ring-shaped electrodes (32-34) lead wires (41-44) connected to the tip electrode (31) and the ring-shaped electrodes (32-34), respectively and a pull wire (50) affixed to the tip electrode (31). The catheter shaft (10) comprises: a shaft proximal end section (11) comprising a metallic tube a shaft distal end section (12) comprising a resinous tube and a resinous coating layer (13) for covering the outer peripheries of both the shaft proximal end section (11) and the shaft distal end section (12). A lead wire protective tube (61) which comprises a soft tube and a wire protective tube (62) which comprises a soft tube are inserted in the shaft proximal end section (11). In the electrode catheter, the lead wires extending from the shaft proximal end section into the operating handle are not damaged or broken by coming into contact with the edge of the opening end of the shaft proximal end section.電極導管係具備:導管管軸(10),具有連接器(70)的操作把手(20),前端電極(31),環狀電極(32~34),連接於前端電極(31)及環狀電極(32~34)之各個的引線(41~44),及固定於前端電極(31)的拉伸導線(50),導管管軸(10)係由以下構成:由金屬套管構成的管軸基端部(11),由樹脂套管構成的管軸前端部(12),及覆蓋彼等外周的樹脂覆蓋層(13);於管軸基端部(11)之內部,被插入軟質套管構成的引線保護套管(61),及軟質套管構成的導線保護套管(62)。依據該電極導管,由管軸基端部朝操作把手之內部延伸出的引線,不會接觸管軸基端部之開口邊緣之緣部而造成損傷或斷線。10‧‧‧導管管軸11‧‧‧管軸基端部13‧‧‧樹脂覆蓋層20‧‧‧操作把手22‧‧‧旋鈕23‧‧‧旋轉板41~44‧‧‧引線50‧‧‧拉伸導線61‧‧‧引線保護套管62‧‧‧導線保護套管80‧‧‧構件81,82‧‧‧基部90‧‧‧前端部90‧‧‧接著劑611‧‧‧基端部分621‧‧‧基端部分
