What is the difference between Class I and Class II medical devices? What are included?

Medical device classification: a class, through routine management is sufficient to ensure its safety, effectiveness of medical devices. Class II, its safety, effectiveness should be controlled medical devices. A class of devices with basic surgical knife, Class II devices are general diagnostic instruments, physical therapy and rehabilitation equipment, clinical testing and analytical instruments, operating room, emergency room, diagnostic room equipment and appliances, medical oxygen concentrator portable oxygen generator, medical hygiene materials and dressings, medical cotton wool, cotton wool, cotton wool, cotton wool, cotton wool, cotton wool, cotton wool, cotton wool, cotton wool, cotton wool.