To bring comfort in position of the user, this bed is available with a lying surface which is height adjustable and four-sectioned. Structure of this device is made optimally for diagnosis. It further characterizes a pneumatic undertaking of adjustments of altitude of the lying surface, along with heights of knee and back rests. The lower leg portion has an angle of inclination, which is subject to manual adjustment. Side protection on longer sides of the bed accounts for maximum security of the patients. A special mattress is embedded in the bed. This is upholstered by a biocompatible cover, which is flame-retarded. The device is compatible for chamber pressures measuring 5 bar. Minimum 1010 mm width is necessary for door of the chamber. Altitude adjustment being around 400-800 mm, knee and back adjustments are 35° and 70° respectively. The device can carry patients weighing up to a maximum of 200 kg. The length and width are 2120 mm and 1000 mm respectively. The compressed air supply calls for stationary mode. Pressure accumulator facilitates mobile usage. Rapid-action coupling accounts for connection.