Electrosurgical device for ablation of a needless body tissue

The present invention provides an electrosurgical device comprising: an electrically conductive shaft; a handle fixed to the proximal end of the shaft; an active electrode connected to the distal end of the shaft to be insulated from the shaft; an insulation sleeve covering the outer circumferential surface of the shaft; a return electrode formed on the distal end of the shaft; and a needle rear-end coupling part having a shaft passing hole, wherein a coupling means for the rear end part of a needle is formed on the front end part of the needle rear-end coupling part, and a handle moving support or a receiving part for the handle moving support is formed on the rear end part of the needle rear-end coupling part. The handle is provided with the handle moving support or the receiving part for the handle moving support. The coupling means for the rear end part of a needle and the handle are connected to each other by the handle moving support and the receiving part for the handle moving support. The handle moving support is formed on either the coupling means for the rear end part of a needle or the handle, and the receiving part for the handle moving support is formed on the other.