Can you sell one or two of your personal medical devices when they are idle?

You can't. It is illegal to buy and sell medical devices between individuals. Medical devices are divided into three categories: Class I, Class II and Class III. Legally speaking, the operation of medical devices requires the approval of the Food and Drug Administration, and generally requires the establishment of a company. Moreover, the registered capital of a general company cannot be less than 300,000, and it can also be affiliated with other regular medical device companies.