In the medical field, reliability and a long service life are indispensable prerequisites for the rapid operability of the products used. The support arm systems are used, among other things, to hold ventilation tubes, infusion systems, monitors and trays. Purely mechanical joints allow safe and easy positioning with high stability. The "Vario Lock" is a universal articulated arm with a large swivel range. It is used to hold respiratory tubes and cables. It can be equipped with 1, 2 or 3 joints, which can be simultaneously fixed in the optimum working position with little effort on a central grip.