#$%^&*AU2011101721A420121206.pdf#####Abstract: A tracheal coupling for interfacing between a patient and a gases source, the connector comprising a patient port (33) for connecting to the trachea interface/insert, an outlet port (36), and inlet port (31) between patient port and outlet port for receiving a flow of gases from the gases flow source, the connector restricting expiratory flow in use to produce PEEP of at least lcm H20 when flow to the inlet port is 50 litres per minute. A system or method for supplying gases to a patient using the connect tor is also disclosed. Flow restriction is implemented using an orifice that can be adjustable, jetting or turbulence induced by a directed flow nozzle (30). PEEP can also be varied by flow control of gas source.