Abstract: Disclosed is a handling system that makes it possible to place a wheeled sleeping unit, particularly a hospital bed, in a high position for a maintenance operation. The system includes a supporting device that is slidably mounted along a guide assembly and is provided with a receiving assembly that is hinged onto one or more vertical slidable portions of the device that are adjacent to a raising area. A sleeping unit can be placed in the area, above a lifting portion defined by the receiving assembly, and a longitudinal side of the unit can be positioned against an abutment surface of the assembly. The receiving assembly includes a holding element that fits into the top of the unit so as to lock the positioning of the unit in the receiving assembly, which makes it possible to change the orientation of the unit after a raising phase.