A device for supporting the emptying of the bladder of a patient, the device comprising: an essentially stiff dome-shaped surrounding element for surrounding at least a part of the bladder having a variable volume, the device comprising at least one sensor for detecting the filling level of the bladder, the surrounding element being connectable with the bladder at a lower end of the surrounding element in a fluid-tight manner, so that an inner reservoir is defined in a hollow space between the surrounding element and the wall of the bladder.
