Gantry hoist's are used to lift people from bed to chair to commode etc. Used with a soft sling positioned under the patient, the winch pod moves along an aluminium track attached to the ceiling.
If you rely on a mechanical lift for your mobility, it makes a difference that it is something more than just a winch-box on a beam. It is important that mobility equipment for a home environment has a different feel to a hospital ward. The design intent is to sooth the mind and give confidence in the engineering.