According to the Regulations on the Supervision and Administration of Medical Devices, medical devices are divided into three categories according to the degree of risk: category risk.
for instance
Class I medical devices
Low risk
Some surgical instruments (not sterilized), medical magnifying glasses, physical examination gloves, etc.
The second kind of medical devices
Moderate risk
Digital slice scanner, medical mask, some surgical instruments (disinfection), some medical equipment, etc.
The third kind of medical devices
The risk is higher.
Implantable instruments, etc.