High-frequency treatment device

A high-frequency treatment device for excising a lesion tissue from a normal tissue, comprising:

• a tubular body having a front end portion and a rear end portion;
• an operating handle having a high-frequency port, the operating handle slidably fitted to the body, the operating handle including a main push rod extending through the body;
• a front tube having a front end portion and a rear end portion connected to the front end portion of the body;
• an auxiliary push rod having engagement faces on an outer circumference and is rotatably connected to the main push rod, the auxiliary push rod extending into the front tube;
• a wire fixed to the auxiliary push rod, the wire extending through the front tube;
• a rotary knob having an engagement hole in its hub formed to accept the engagement faces of the auxiliary push rod and rotatably attached to the body, the auxiliary push rod slidably fitted to the rotary knob so that the engagement faces of the auxiliary push rod engage the engagement hole of the hub when the operating handle slides toward the front end portion of the tubular body thereby enabling the auxiliary push rod, the rotary knob and the wire to rotate together;
• and
• an arc-shaped knife that retracts into the front end portion of the front tube when the operating handle slides away from the front end portion of the tubular body and protrudes out of the front end portion of the front tube when the operating handle slides toward the front end portion of the tubular body and is fixed to the wire so that the arc-shaped knife rotates when the engagement faces of the auxiliary push rod engage the engagement hole of the rotary knob's hub, wherein the arc-shaped knife is connected to the high-frequency port of the operating handle via the wire, the auxiliary push rod and the main push rod;
• wherein the body includes a saline solution inlet port formed in the front end portion of the body.