erasing the inability to hear?

I have a small theory that if you combine a mini computer and nano technology and cybernetics and make it into an artificial eardrum that replaces the real one or could be used to repair the old one simply put it depends on the type of tech used and all the smart minds put together to erase flaws otherwise one accident could quite literally blow someone's head up .... quite a gruesome way to die ... but you could also simply use nanotech machines to attach to the muscles or any organs or blood cells and release strengthening protein into the cells directly or repair the ears or other defective organs nanotech could even be programmed to eat the cancerous cells and therefore eat cancer and tumors in the human body.... it will definitely require intense programming