What exactly is frail care?

I sent in reports from both my husband's doctor and a registered nurse from a home care agency on the advice of a person from the call centre of my medical aid society. My husband is paraplegic and catheterized and stool incontinent following a spinal core operation and six months in hospital and also can't sit up without help. I am not strong and cannot lift him into his wheelchair or recliner. A hoist is more than our pensions. The request was declined and the medical aid said he didn't need home nursing but frail care which they do not cover.
I have a caregiver who comes for a few hours on Tuesdays and Thursdays which is the most I can afford. But I don't really know what frail care means.