System for supplying gases to an airway

A system for providing respiratory support to a patient (P) comprising: a first respiratory support system comprising a first patient interface (200) for providing a first flow of gases to the patient (P), the first patient interface (200) being independently locatable on the patient (P), wherein the system comprises a device, such that with the first patient interface (200) located on the patient (P), the device is configured to facilitate a switching of the system between different respiratory modes: - in a first respiratory mode, the device that allows the administration of the first flow of gases to an outlet of the first patient interface (200) when a second patient interface is absent or removed from the patient (P) and/or when a second flow of gases is stopped from being delivered to the patient (P) by the second patient interface, - in a second respiratory mode, the device that reduces or stops the administration of the first flow of gases at the outlet of the first patient interface (200) when the second patient interface is located together with the first patient interface (200) on the patient (P) and/or when the second flow of gases is administered to the patient (P) through the second patient interface, wherein the first respiratory support system comprises a first gas conduit and the device, the device comprising a collapsible part of the first gas conduit configured to make a transition between a first configuration to provide a first level of the first flow of gases to the outlet and a second configuration to provide a second level of the first flow of gases to the output, the second level less than the first level, and one or both of: - wherein the system switches from the first respiratory mode to the second respiratory mode through the transition of the folding part from the first configuration to the second configuration, - wherein the system switches from the second respiratory mode to the first respiratory mode through the transition of the part folding from the second configuration to the first configuration.