FAQ

Why is it better to use radiofrequency electrosurgical knives in veterinary surgery?

The Grey Longbo RFS-30 radio frequency wave knife uses 4.0M radio frequency technology to achieve low-temperature cutting and coagulation functions. Compared to ordinary high-frequency electric knives, it causes very little thermal damage to pets during surgery, leading to faster recovery post-operation. More importantly, since most pets have fur on their bodies, using a high-frequency electric knife often requires preparing the skin for the negative electrode plate. This is where the advantages of the radio frequency wave knife become apparent. The radio frequency wave knife uses a capacitive electrode plate, which does not need to be closely adhered to the skin, meaning the electrode plate does not require skin preparation. This brings great convenience to pet surgeries, and thus it is increasingly favored by doctors.

Why is it better to use radiofrequency high-frequency surgical equipment under endoscopic foraminoscopy?

The Grelangbo RF-100 high-frequency surgical device uses 1.71MHz radio frequency technology to perform fine minimally invasive surgery under the intervertebral foramen endoscope. Currently, there are mainly two types of clinical applications: low-temperature plasma devices or radio frequency high-frequency surgical devices. However, more and more hospitals are beginning to adopt radio frequency high-frequency surgical devices, mainly for the following three reasons: 1. When operating radio frequency high-frequency surgical devices, there is no need for sodium chloride solution as a medium, thus minimizing stimulation or damage to the cauda equina. 2. Unlike low-temperature plasma devices, radio frequency high-frequency surgical devices do not produce arcs, therefore not damaging the endoscope. 3. Compared to low-temperature plasma devices, radio frequency high-frequency surgical devices are superior in coagulation.

Why is there no carbonization of tissue during surgery with radiofrequency high-frequency surgical equipment?

The degree of burn on human skin mainly depends on temperature and time. Generally, a temperature of over 70°C can cause instant burns to the human body, meaning that when the skin comes into contact with a temperature of 70°C or higher, it will be instantly damaged. If the human body is in continuous contact with objects above 50°C, it will also be burned. Damage to tissues at temperatures ranging from 40-49°C is reversible; damage to tissues at temperatures above 50°C is irreversible; temperatures between 40-70°C are conducive to tissue biopsy; when the temperature exceeds 100°C, tissues will rapidly dry out and even carbonize. The working principle of high-frequency surgical equipment at radio frequency levels determines that it will not cause tissue carbonization during operation. It utilizes radio frequency electromagnetic waves, causing tissue cells to rapidly oscillate under the influence of the electromagnetic field, colliding with cell walls to cause them to rupture, thus achieving the purpose of cutting. The electric knife itself does not generate heat and is considered low-temperature cutting, with the temperature in the surgical area not exceeding 70°C.

Why are radio frequency high-frequency surgical devices more suitable for fine minimally invasive surgery?

Radiofrequency high-frequency surgical equipment is more suitable for fine minimally invasive surgery? It mainly depends on the frequency and working principle of the radiofrequency high-frequency surgical equipment. The working principle of radiofrequency high-frequency surgical equipment is that the electrode working end outputs electromagnetic waves at a very high frequency, generally above 1.5MHz (for example, the frequency of products from Gralab is 4MHz). These waves are concentrated in a very small area. Since cells contain a large number of water molecules (water molecules are polar molecules and are affected by electromagnetic fields), under the influence of this localized high-frequency electromagnetic field, water molecules oscillate rapidly, colliding with the cell wall and causing it to rupture, thus achieving the cutting purpose. Some studies have pointed out that frequencies of 3.8-4.0MHz cause minimal lateral thermal damage to human tissues, with a working temperature of 40-70°C. Low-temperature cutting results in a small wound area, with no carbonization of tissues; healing is quick, and recovery is fast; cutting is fine and accurate, making precise operations easy to control.

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 electrosurgical knives ranges from 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 that segment and inversely proportional to the resistance of that 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 electrosurgical 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. The cells 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 radiofrequency high-frequency surgical equipment is that the working end of the electrode outputs 1.71MHz/4.0MHz radiofrequency 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 effect of this local high-frequency electromagnetic field, causing the cell walls to rupture, thereby achieving the cutting purpose. At the same time, the water molecules generate heat through friction during high-speed movement, converting electrical energy into heat.