According to current Russian healthcare legislation, a high-frequency electrosurgical unit is a mandatory standard for operating rooms. What is the operating principle of high-frequency electrosurgical units (HFE) and what are their advantages? The electrosurgical unit [https://eleps.ru/katalog/elektrokhirurgiya-elektrokhirurgicheskie-apparaty/] generates an electric current (frequency 100 kHz–5.5 MHz), which is converted into thermal energy. This releases a large amount of energy, resulting in the instantaneous evaporation of water and tissue destruction (when the electrode contacts the body). The electrosurgical unit has several operating modes, enabling both dissection and coagulation of biological tissue. The type and temperature of the treatment are varied both by current parameters and by electrode size. For example, a continuous mode is used for cutting, and a pulsed mode is used for coagulation. If the surgeon requires powerful, localized heating of biological tissue during an operation, electrodes with a small contact surface are used; if less intense and large-scale effects are required, electrodes with a large contact surface are used. Currently, there are several types of EHF: - Monopolar: An electrical circuit is created by placing one electrode on the patient's body, while the other electrode is held in the surgeon's hand (used to make the incision). - Bipolar: Both electrodes are placed inside an electric scalpel, limiting the area of ??the patient's body exposed to heat. Bipolar devices are the safest, as the electric current passes through only a portion of the patient's body, not its entire body. - Combined models: Combined electrosurgical devices are the most convenient and multifunctional, as they combine two operating modes. The convenience of these models is explained by the ability to change the nature of the effect depending on the task at hand. Please note that when choosing an EHF device, the price can vary significantly and depends on many factors, including the manufacturer, differences in the device's design, the number of operating modes, etc. If you are looking for a high-quality and reliable high-frequency device, you may want to consider the EHF devices produced by the domestic company ElePS.