Briefly describe the utility model, which is the second of the three types of pharmaceutical patents.

Answer: utility model refers to the shape of the product, the structure or a combination thereof proposed new technical solutions suitable for practical use. In the field of medicine, certain function-related drug dosage form, shape, structure changes, especially contraceptive pills and medicines are mostly diagnostic drug kits and function-related shape, structure; production of special equipment for pharmaceuticals; the shape and structure of the packaging containers of certain drugs; some medical devices, such as the new structure, you can apply for a utility model patent.