
Orthopedic power systems (e.g., bone drills, bone saws, grinding drills) must comply with GB 9706.1, YY 0505 (domestic), and IEC 60601-1-2 (international) EMC standards. Their core components are a high-speed motor (brushed/brushless) and a control system, providing adjustable speed and torque. The standards require effective suppression of conducted and radiated emissions from the motor drive circuit to prevent interference with sensitive equipment such as monitors and navigation systems in the operating room. Simultaneously, their own speed control and torque feedback functions must be stable and unaffected by external interference (e.g., electrosurgical units) to ensure the precision and safety of surgical procedures.