PROBLEM TO BE SOLVED: To provide a bipolar-type high frequency treatment tool for endoscope, capable of safely performing both treatments of incision and abrasion.SOLUTION: An electrode support member 31 disposed at a distal end of a sheath 11 is provided with a first electrode 32 and second electrode 33 each made of an electroconductive wire rod, and the electrode support member is formed of a substantially columnar insulating member whose longitudinal direction is along an axial-line direction of the sheath. The first electrode includes a pair of first axial-direction wires 32a and 32b that are substantially parallel to each other, and a radial-direction wire 32c that links the distal ends of the first axial-direction wires. The radial-direction wire is disposed along the distal end surface of the electrode support member. The second electrode includes a pair of second axial-direction wires disposed to be substantially parallel to each other. The first axial-direction wires and second axial-direction wires are disposed on a flank of the electrode support member so that they can be substantially parallel to each other with a substantially constant gap between them.COPYRIGHT: (C)2015,JPO&INPIT【課題】切開と剥離との両方の処置を安全に行うことができる内視鏡用バイポーラ型高周波処理具を提供する。【解決手段】シース11の遠位端に設けられた電極支持部材31に、導電性の線材からなる第1電極32及び第2電極33が設けられ、電極支持部材はシースの軸線方向に長手方向を有する略柱状の絶縁部材から構成されている。第1電極は、互いに略平行する一対の第1軸方向線部32a,32b、及びこれらの遠位端を互いに接続する径方向線部32cを有し、径方向線部は電極支持部材の遠位端面に沿って配置されている。第2電極は、互いに略平行するように設けられた一対の第2軸方向線部を有し、第1軸方向線部及び第2軸方向線部は互いに略一定の離間間隔をもって略平行するように、電極支持部材の側面に配置されている。【選択図】図6
