I take care of my husband, MS, 62. He is not able to do anything much at all anymore (for past 3 yrs). I came out of my office to find him on the floor in the living room. He had slipped out of his wheelchair. Any suggestions? He has a gel cushion that he slips right out of. I have tried the foam, the thin film that you use for rugs or shelving. Thought of trying the treads you get for ramps, but that will rip up his pants really fast. Can't use the seatbelt because he sits in his chair almost straight out, he doesn't really bend at his waist...any suggestions?