Abstract: An artificial ventilation system includes a patient interface adapted to contain a volume in communication with at least the mouth and nose of a patient. The patient interface is provided with a through hole. The system also includes a nasal cannula connected to the through hole of the patient interface; and a connection element snugly fitted in the through hole and sealingly fitted onto the nasal cannula.

Abstract: A helmet (10) for non-invasive ventilation of patients comprising: a container body (20) in which there can be housed the head of a patient, provided with at least one optically transparent portion and with an open end to which a first rigid ring (21) is fixed; an elastically yieldable collar (30) which can be sealingly coupled to the neck of the patient and fixed to a second rigid ring (31) can be sealingly removably associated to said first rigid ring (21), whose distinguishing characteristic consists in comprising a bayonet-like coupling means adapted to removably couple the first and the second rigid ring with respect to each other (21,31).

Abstract: A helmet (10) for non-invasive ventilation of patients comprising: a container body (20) in which there can be housed the head of a patient, provided with at least one optically transparent portion and with an open end to which a first rigid ring (21) is fixed; an elastically yieldable collar (30) which can be sealingly coupled to the neck of the patient and fixed to a second rigid ring (31) can be sealingly removably associated to said first rigid ring (21), whose distinguishing characteristic consists in comprising a bayonet-like coupling means adapted to removably couple the first and the second rigid ring with respect to each other (21,31).