Ultrasonic scalpel is a kind of mechanical vibration, which is the gasification of tissue protein and the rupture of hydrogen bond, thus achieving the effect of cutting and hemostasis. Its advantages are low heat production, good hemostasis effect and clear vision, but the equipment is expensive and bulky.

High-frequency electrotome makes high-frequency electricity pass through the tissue to be cut through the cutting action of high-frequency electricity, so as to achieve the effect of cutting and hemostasis. Its advantages are mature technology, cheap equipment and consumables, but high heat and smoke.