Thanks for that - I have posted the same question to ENT forum. I had heard somewhere that a new type of skin 'graft' (or growing?0 was being developed.
Being an audiologist, I am limited to my knowledge. I would suggest you post this question on the ENT forum. That said, I know if no surgical sollution to your current problem.
Yes there are certain types of grafts that are done, but in your particular situation, I know of none.