The Bain Circuit uses a high fresh gas flow to deliver anaesthetic gases to the patient and to wash out the exhaled CO2.
The construction of the Bain Circuit uses an inner tube which delivers fresh gases to the patient and an outer corrugated
tube that transports the exhaled gases. This system ensures there is no rebreathing of the exhaled gases when the correct
flow rate is set, this is dependent on the patient’s minute ventilation.