Abstract: The application discloses a rigid or semi-rigid, two-part confining cover for a patient in a conventional hospital bed. The problem dealt with is that of a disturbed patient who would normally require confinement by ties, straps, or other conventional restraints, together with, in many cases, round-the-clock guarding by an attendant. The mattress support frame of a hospital bed usually has one or more horizontal pivot joints, the most important of which enables tilt-up of the back of the bed. Knee lift provisions are generally provided. The disclosed cover includes forward and rearward open-bottom shells, hinged to one another about the hinge axis of the bed used for tilt-up of the back part of the bed. The front shell has side walls rising from the longitudinal edges of the bed frame, forward of the aforementioned pivot axis, a front end closure, and a top closure. The back shell has side walls rising from the longitudinal edges of the bed frame from this pivot axis back, a rear end wall, and a top wall.