Mast has a bed head unit made from an extruded aluminum profile in which a number of well separated paths are provided for the passage of electrical, signal and alarms conductors and which houses the medical gas components, separated from the electrical ones. It is for long term care wards and nursing homes. A typical function of Mast is to make available electrical services and medical gases to two beds with a single device. The electromedical device is fixed vertically on the wall.