aerosol spray gun handle ?

[blazer2007]

My middle finger is welded almost in a fist position from scare tissue build up from hitting all my life from wrenching an slipping and hitting my knuckle. It ,s getting a little worse and is hard to use aerosol products, tire foam, carb cleaner paint etc. All the docters can do is brake the knuckle and set it in a postion I want and that requires surgery. I was hoping I would brake it myself as I have broke other fingers but no luck. Maybe go to Vegas and cheat and they will brake it for me LOL. Anyway, can anyone recommend a good one and are they universal for different size cans.I,m not good using left hand especially with paint cans