A medical device in China means any instrument, apparatus, appliance, material, or another article, whether used alone or in combination, including the software necessary for its proper application. It does not achieve its principal action in or on the human body by utilizing pharmacology, immunology, or metabolism. Still, it may be assisted in its function by such means, the use of which is to achieve the following intended objectives:
1. Diagnosis, prevention, monitoring, treatment or alleviation of disease
2. Diagnosis, monitoring, treatment, alleviation of or compensation for an injury or handicap conditions
3. Investigation, replacement or modification for anatomy or a physiological process
4. Control of conception.
Active Medical Devices: any energy that relies on electricity or other energy, not directly from the human body or gravity. Medical devices that use the energy generated by life to perform their functions.