Breathing assistance apparatus for delivery of nitric oxide to a patient by means of a nasal cannula assembly with flow control passage

摘要

The invention concerns a breathing assistance apparatus having a source of Nitric Oxide in fluid communication with a nasal cannula assembly (10) adapted to deliver gases to a patient comprising a first compartment (1) and a second compartment (2) separated by a separation wall (6); a pair of nasal prongs (5) in fluid communication with the first compartment (1); the first compartment (1) comprising a first inlet (11) for introducing a first gas into said first compartment (1); the second compartment (2) comprising a second inlet (2) for introducing a second gas into said second compartment (2); and the separation wall (6) comprising at least one flow restriction element (35) for controlling the passage of gas from the second compartment (2) to the first compartment (1).