Yikang Medical Explains Weak Magnetic Field in rTMS: Core Technology of YK-7000 Transcranial Magnetic Stimulators Therapy Device

At present, the global demand for non-invasive, safe and efficient neurological treatment solutions is growing rapidly. rTMS technology has been widely recognized in psychiatry, neurology, rehabilitation medicine and other fields. However, there is still widespread confusion in the international market about the concept of "weak magnetic field" in rTMS technology. Relying on years of R&D and clinical experience in the field of transcranial magnetic stimulation equipment, Jiangsu Yikang Medical has provided a professional yet easy-to-understand interpretation.

First of all, the core definition must be clarified: the weak magnetic field in rTMS refers to the low-intensity pulsed magnetic field generated by the treatment coil of the device, acting on the cerebral cortex, with adjustable magnetic induction intensity. Different from the high-intensity magnetic fields used in some professional diagnostic equipment, the weak magnetic field in Yikang Medical's rTMS devices is precisely controlled within a safe and effective range—usually between 3mT and 30mT, far lower than that of MRI equipment. It can still penetrate the skull without attenuation and regulate brain neurons.

The R&D team of Yikang Medical pointed out that the essence of the weak magnetic field in rTMS lies in "precise regulation rather than strong stimulation". Based on the principle of electromagnetic induction, the device releases an instantaneous stable current from a high-voltage capacitor to the treatment coil worn on the scalp, which then generates a weak pulsed magnetic field. This magnetic field penetrates the scalp and skull almost without attenuation, inducing tiny secondary induced currents in the target areas of the cerebral cortex, thereby regulating the potential of nerve cell membranes, enhancing neuronal activity, further improving cerebral metabolism and neuroelectrical activity, and achieving the purpose of treatment and rehabilitation. The weak magnetic field not only avoids damage to brain tissue caused by excessive magnetic field intensity, but also ensures the accuracy of stimulation—its spatial resolution can reach the centimeter level, and it can precisely act on the subcortical areas at a specific depth (usually 2–3 cm).

It is worth emphasizing that the weak magnetic field in Yikang Medical's rTMS devices has three core characteristics, which are highly recognized by the international market.First, safety and non-invasiveness: during treatment, the weak magnetic field is radiation-free, painless and non-traumatic, with almost no obvious side effects. It is suitable for long-term treatment of the elderly, adults and even children, and can be used in combination with medication to reduce dosage and improve efficacy.Second, adjustable and personalized: the magnetic induction intensity, stimulation frequency, vibration intensity and electrical stimulation intensity of the weak magnetic field can be steplessly adjusted according to the patient's condition, age and individual differences, fully meeting the personalized treatment needs of medical institutions worldwide. The output frequency of the device covers 0.01–50 Hz, with a step ≤0.1 Hz in the ≤1Hz band, allowing flexible switching between low-frequency inhibitory and high-frequency excitatory modes according to treatment needs.Third, high efficiency and targeting: the weak magnetic field can specifically regulate the abnormal discharge patterns of neurons in target brain regions, and has significant effects on improving sleep disorders, depression, post-stroke rehabilitation, Parkinson's disease, epilepsy and other diseases. Its efficacy has been verified by a large number of clinical practices.

As a key enterprise in the neuromodulation equipment industry in Gulou District, Xuzhou, Jiangsu Province, Jiangsu Yikang has always adhered to the philosophy of "Technology First, Safety Supreme", and established in-depth cooperation with many well-known overseas medical institutions and distributors. This interpretation of the weak magnetic field in rTMS is not only a professional technical popularization, but also a positive response to the needs of the international market, helping global partners better promote and apply this non-invasive treatment technology.