Endoscopic monopolar operating instrument

A single-pole operating instrument under an endoscope comprises a single-pole electrotome and an installation rod, the section of the installation rod is circular, the center line of the installationrod is arranged in the front-back horizontal direction, and a center hole is formed in the installation rod in the axis direction. To sum up, the multifunctional scalpel has multiple functions of cutting, electrocoagulation, flushing, suction and the like; according to the new technology, the extending length of the single-pole electrotome is adjusted through the ring handle, flushing and suctionare changed through the reversing adjusting valve, an operator can conduct flushing or suction in an operation area while conducting operation cutting or separation or electrocoagulation, repeated instrument replacement is not needed, and the single-pole electrotome is particularly suitable for laparoscopic liver resection. By adopting the new technology, an operator can perform various operationsat the same time; the surg