High-frequency coagulation knife and control system thereof

The invention relates to the field of cutting hemostatic surgery equipment, and discloses a high-frequency coagulation knife. The invention is characterized in that the high-frequency coagulation knife includes a surgical accessory and a host. The surgical accessory is connected to the host through a connecting line. The surgical accessory includes a handle, a tong head and the connecting line, wherein the tong head is connected to the handle by an adjustment roller; the adjustment roller is installed on the handle; and a button is also installed on the handle. The circuit of the host adopts ahigh-frequency current heating circuit. Defects of a corresponding ultrasound knife are avoided; the thermal damage around the tong head is reduced by adjusting power output of the host; by bipolar output, the equipment is simultaneously applicable to endoscopic surgery and open surgery without the use of a negative plate, thus reducing the risk and the cost; the operations are simple and fast bythe equipment; and power