Patent ID: 7354439

Claim:
A treatment tool configured to be inserted into a human body through an endoscope, comprising: an elongated inserting portion configured to be inserted through an accessory channel of the endoscope; a supporting member attached to a distal end of said inserting portion, said supporting member being provided with a slit; a shaft attached to said supporting member so as to cross said slit in a width direction thereof; a pair of manipulation members, at least one of said pair of manipulation members being pivotably supported for movement by said shaft within said slit so as to open and close with respect to another of said pair of manipulation members, said pair of manipulation members comprising a pair of electrodes connectable to a high frequency power supply, said manipulation members being movable between opened and closed positions via leads connected to said high frequency power supply; and a spacer located between said pair of manipulation members, said spacer insulating said electrodes from each other, and remaining stationary with respect to said supporting member during movement of the manipulation member, wherein said shaft is supported by said spacer so as not to come off from said supporting member.