ShouLiang-med SEH80A: Refining Physical Principles, Advancing the Future of Surgery

As a core device in modern surgical procedures, the high-frequency electrosurgical generator derives its efficiency and safety from the precise application of deep physical principles. It converts standard 50Hz low-frequency current into high-frequency current ranging from 300kHz to 750kHz, and relies mainly on three mechanisms—the skin effect, thermal effect, and Faraday effect—to achieve precise cutting and effective coagulation while ensuring maximum patient safety. The ShouLiang-med High Frequency Generator SEH80A is developed based on a profound understanding of these principles, integrating intelligent control technologies to further enhance surgical precision, safety, and operational efficiency.

The skin effect, also known as the surface effect, refers to the phenomenon where high-frequency current tends to flow along the surface of a conductor. In electrosurgery, this ensures that current primarily flows along the tissue surface rather than penetrating deeply into internal organs, thereby avoiding unintended electrical injury to vital structures. To ensure this effect functions safely, proper contact between the return electrode and the patient’s skin is essential. The ShouLiang-med SEH80A is equipped with a real-time Disposable Patient Return Electrode monitoring system that continuously checks electrode contact quality and current distribution. When abnormal impedance is detected, the system promptly alerts the operator, effectively preventing skin burns caused by excessive current density.

The thermal effect is the direct mechanism that enables tissue cutting and coagulation. When high-frequency current passes through tissue, ions oscillate rapidly in the electric field, generating heat through friction. The ShouLiang-med SEH80A features intelligent tissue sensing technology that automatically detects changes in tissue impedance and adjusts output power in real time. This intelligent adjustment allows heat to be precisely focused during cutting, causing rapid vaporization and clean tissue separation, while controlled heat diffusion during coagulation denatures proteins and seals blood vessels effectively. This not only improves surgical efficiency but also significantly reduces tissue charring and surgical smoke, enhancing visibility. The device also provides eight monopolar and six bipolar modes, flexibly meeting the needs of various surgical scenarios from open procedures to minimally invasive laparoscopic operations.

The Faraday effect explains the potential dangers of low-frequency electrical stimulation to the neuromuscular system. When current frequency falls below 100kHz, it can cause muscle spasms, pain, or even ventricular fibrillation. By operating above 300kHz, high-frequency electrosurgical generators effectively avoid nerve and muscle stimulation.

In summary, the excellent performance of high-frequency electrosurgery is built upon solid physical foundations, including the skin effect, thermal effect, and Faraday effect. Through the integration of real-time monitoring, adaptive power control, and multi-mode output, the ShouLiang-med SEH80A high-frequency surgical system transforms these physical principles into clinical efficiency and safety, exemplifying the intelligent and precise evolution of modern surgical equipment.