bed-ridden

Q: It is not permissible to look at another persons body or to touch their private organs. So if there is a man who is bedridden and he has no wife, and he can not make his own istinjaa or change his own clothes, how should it be done?

Q: If a person is bed-ridden, how should those attending to him clean him after he relieves himself or at the time of ghusl? Is it permissible for them to look at or touch his private parts while cleaning him? Also explain the ruling with regard to a woman who is bed-ridden.