Auxiliary mounting wrench for ultrasonic knife

The utility model discloses an auxiliary mounting wrench for an ultrasonic knife, and relates to the technical field of medical instruments. Comprising a wrench body, the wrench body is coaxially and fixedly connected with an adapter ring, and the adapter ring is used for being rotationally connected with the open end, used for inserting an ultrasonic knife rod, of an ultrasonic knife handle. The wrench body is rotationally connected to the open end of the ultrasonic scalpel handle through the adapter ring, when the ultrasonic scalpel rod and the ultrasonic scalpel handle are assembled in a threaded mode, the ultrasonic scalpel rod firstly penetrates through the wrench body and then is inserted into the ultrasonic scalpel handle, assembly of the ultrasonic scalpel rod and the ultrasonic scalpel handle is not affected, and the wrench body is connected with the ultrasonic scalpel handle; the situation that the wrench body is lost is effectively avoided, and the assembling efficiency of the ultrasonic knife is i