Application of this device?
normally you need a patent lawer which knows rules and regulations, also they are skilled in how to write a valid patent. These documents are very formal and use unusal wording.
Also, international patents will cost you several thousand euro/dollar - just for the 10 biggest industrial regions or so.
So be sure you can get back your invest
Sometimes big universities hold patents, pay the fees. but dont expect to get heaps of money if you sell your invention to them. This is also the case if you do inventions as an employee