What are the domestic and international EMC (electromagnetic compatibility) standards for transcranial magnetic stimulation (TMS) devices?

Transcranial magnetic stimulation (TMS) devices used for the treatment and research of neuropsychiatric diseases must comply with GB 9706.1, YY 0505 (domestic), and IEC 60601-1-2 (international) EMC standards. They generate a strong pulsed magnetic field by discharging a high-voltage capacitor into a stimulation coil. This discharge process produces extremely strong transient electromagnetic pulses, which are a significant source of interference. The core of the standard is to strictly limit its transient emissions to prevent permanent damage or interference to other equipment in the treatment room (e.g., EEG and ECG monitoring equipment), while ensuring that its own positioning and control system can quickly recover stability after the discharge.