The purpose of the present invention is to provide a balloon-type electrode catheter, which can be introduced into the vasculature without impairing the sheath and the lumen of the endoscope, and can reach the lesion tissue Carry out extensive cauterization. The balloon-type electrode catheter of the present invention is provided with an outer tube (10), a connector (21) for energization, and a balloon (30), which has necks (33), ( 35), and the inner tube (41), and the top end piece (46), and the strip electrodes (51) to (54), which are formed on the outer surface of the balloon (30) and the metal ring (60), which The peripheral surface is attached to the front neck (31) and the lead (70) so as to contact the front ends of the strip electrodes (51) to (54), and the front ends are fixed to the inner circumference of the metal ring (60) The base end is fixed to the current-carrying connector (21), thereby electrically connecting the strip electrodes (51) to (54) to the current-carrying connector (21).本發明的目的，是在於提供一種氣球型電極導管，其對於所使用之護鞘還有內視鏡的內腔，可以無損於插通性地導入於脈管系統，並且對於病灶組織能夠及於大範圍地進行燒灼治療。本發明的氣球型電極導管，具備有：外管(10)、及通電用連接器(21)、及氣球(30)，其在擴張部(31)的兩端具有頸部(33)、(35)、及內管(41)、及前端頂件(46)、及帶狀電極(51)～(54)，其形成於氣球(30)的外表面、及金屬環(60)，其內周面以接觸於帶狀電極(51)～(54)的各個前端部之方式裝設於前端側頸部(31)、及導線(70)，其前端固定於金屬環(60)的內周面，且其基端固定於通電用連接器(21)，藉此將帶狀電極(51)～(54)之各個與通電用連接器(21)電性連接。
