How much does it cost to be the first inventor and the patentee of a medical patent? What's the connection between them?

The inventor is only nominal and has no ownership of the patent. The patentee refers to the owner of the patent. If you want to change it, it is transferred. After general authorization, the cost of patent transfer is high, and the patent that seems to be transferred when evaluating the title is not good. You can apply for a patent yourself. If the invention takes a long time, you can use a utility model patent, which can generally meet the needs of evaluating professional titles, and it will not involve transfer, and the cost is similar.