What is the essential difference between ultrasonic knife and electric knife?

Ultrasonic knife is mechanical vibration is tissue protein gasification, hydrogen bond breaking, so as to achieve the effect of cutting and hemostasis, the advantage of small heat production, hemostatic effect is good, clear vision, but the equipment is more expensive, the instrument is more bulky.

High-frequency electric knife is through the cutting effect of high-frequency electricity, so that high-frequency electricity through the tissues to be cut to achieve the effect of cutting and hemostasis, the advantage is that the technology is mature, the equipment and consumables are cheap, but the heat, smoke are relatively large.