PROBLEM TO BE SOLVED: To provide a high frequency treatment instrument for an endoscope which is capable of energizing a high frequency current to both electrodes so that high frequency cauterization is not performed simultaneously at a distal end projecting/retracting electrode and a side face fixed electrode only with one operation wire, and surely fixedly assembling the side face fixed electrode therein.SOLUTION: The distal end projecting/retracting electrode 2 and the operation wire 4 are connected by a conductive connector 5 made of a conductive material having a diameter larger than those of both. A tip side narrow diameter hole 11 having such a diameter that the distal end projecting/retracting electrode 2 passes therethrough but the conductive connector 5 cannot enter, and a rear side thick diameter hole 12 having such a diameter that the conductive connector 5 passes therethrough, are formed in series through the axial position of a distal end body block 10. The distal end of the side face fixed electrode 3 is bent back in a J-shape, the bent-back part 31 is fitted and held inside an electrode holding groove 14 formed on the distal end body block 10, and a rear side part 32 of the side face fixed electrode 3 is bent into a flexible sheath 1 near the rear end position of the distal end body block 10.COPYRIGHT: (C)2011,JPO&INPIT【課題】一本の操作ワイヤだけで、先端突没電極と側面固定電極で同時に高周波焼灼が行われることがないように、両電極に高周波電流を通電させることができ、且つ、側面固定電極を確実な固定状態に組み付けることができる内視鏡用高周波処置具を提供すること。【解決手段】先端突没電極2と操作ワイヤ4とがその双方のどちらよりも径の大きな導電材からなる導電接続体5で接続され、先端本体ブロック10の軸線位置には、先端突没電極2は通過するが導電接続体5は入り込めない径の先側細径孔11と、その導電接続体5が通過する径の後側太径孔12とが直列に貫通形成され、側面固定電極3の先端がJ字状に曲げ戻されて、その曲げ戻された部分31が先端本体ブロック10に形成された電極保持溝14内に嵌め込まれて保持され、側面固定電極3の後側の部分32が先端本体ブロック10の後端位置付近において可撓性シース1内に曲げ込まれている。【選択図】 図1
