Tough decision for sure. However, modern medicine is something else today. I recommend you do a google search on the device and find the pros and cons. Personally, if it was my decision, I would wait until my hearing was a complete loss. Then attempt this device. If that is a avenue you can take that is. However, you stated you right ear has completely lost it ability to hear noise, therefore, I would go for the right ear and see what happens. If it works
If not
then do not concider the left ear that you do have some hearing ability.