Help Mr Fish stay independent at home

My husband Fishbones has progressive multiple sclerosis and is steadily deteriorating.  His mobility is now severely compromised and he is finding it increasingly difficult to get around the house under his own steam and currently uses a Zimmer frame but his legs are getting weaker and a lot less co-operative.  He has a motor scooter for use outside but we need something for him to maintain his independence at home while I am at work.  This motorised chair will allow him to get around without needing assistance, he'll be able to get to the bathroom, get to the kitchen, look after himself during the day.  He doesn't ask for much, hates needing help from people and doesn't want to be a burden.  This chair will help him keep some control for a bit longer.