What is the difference between radio frequency high-frequency surgical equipment and ordinary high-frequency electrosurgical knives?

The main difference lies in the frequency and waveform, which in turn determines the differences in working principles and effects.

　　First, the high-frequency surgical equipment independently developed and produced by Greylanbo operates at frequencies of 1.71MHz and 4.0MHz, while the working frequency of ordinary high-frequency electric knives is 450KHz to 650KHz.

　　Second, the working principles of the two are different.

　　In the same circuit, the current through a segment of conductor is proportional to the voltage across the ends of this segment and inversely proportional to the resistance of this segment, which is Ohm's law. When current passes through human tissue, the tissue generates heat due to its own impedance. When the current remains constant, the greater the impedance, the greater the heat.

　　When an ordinary high-frequency electric knife is in operation, the current passes through the electrode, and the smaller the area of contact between the electrode and the human body, the greater the impedance, resulting in more heat at the contact point, causing cells to heat up and rupture, leading to coagulation (similar to a balloon being burned), thus achieving the purpose of cutting or hemostasis.

　　The working principle of radio frequency high-frequency surgical equipment is that the working end of the electrode outputs 1.71MHz/4.0 MHz radio frequency electromagnetic waves, rather than current. The large number of polar water molecules in the cells, influenced by the electromagnetic field, oscillate and collide rapidly under the action of this local high-frequency electromagnetic field, causing the cell walls to rupture, thus achieving the cutting purpose; at the same time, the water molecules generate heat through friction during high-speed movement, converting electrical energy into heat.