Ultrasonic knife with replaceable knife bar for minimally invasive surgery

The invention discloses an ultrasonic knife with a replaceable knife bar for minimally invasive surgery, and relates to the technical field of medical instruments. Comprising a cutter bar mechanism and a handle mechanism, a supporting sleeve, a scalpel rod and a clamp transmission pipe in the scalpel rod mechanism are all inserted into the handle body, the scalpel rod is in threaded connection with the transducer, and the clamp transmission pipe is connected with the trigger assembly through a linkage mechanism. The cutter bar mechanism and the handle mechanism are detachably connected, after the cutter bar mechanism and the handle mechanism are assembled, the trigger assembly can drive the clamping assembly to work through the linkage mechanism, the clamping effect in the operation process is not affected, only the cutter bar mechanism is processed after the operation is completed, consumption of the handle mechanism is reduced, and the operation efficiency is improved. And the operation cost is reduced. 本申请