Lucas needs a Cochlear implant

This is Lucas. He is now 6 years old. He has CHARGE Syndrome. He is blind , deaf, can't swallow, can't walk or talk. He has had a Cochlear implant for 4 years, but now we have lost his external device for his left ear . The insurance company will not replace it until it has been 5 years. The right ear also has an implant, but it is in the process of failing. We need to replace his left device so he can hear.
My sweet boy has been thru almost 20 surgeries and is really a fighter. Please help if you can!