Single limb breathing circuits divided by a flexible septum running the length of the tube. They are used to deliver anaesthetic and other gases to a patient.
Mapleson breathing circuits are of various configurations and used for delivering oxygen and anaesthetic agents and to eliminate carbon dioxide during anaesthesia.
Standard ventilator circuits to conduct air or oxygen (O2) enriched gases and additional gases [e.g., nitrous oxide (N2O), halogenated gases] from a ventilator to a patient.