Abstract: A unitary humidity oxygen nasal prong cannula assembly includes two oxygen supply assemblies. Each assembly includes a body (5) having an oxygen inlet (7) and a prong (9) extending from the body (5). The prong (9) is configured for insertion into a nostril of a patient. The body and the prong define a passageway for supplying oxygen to the nostril of the patient. The assembly also includes a heat and moisture exchange (“HME”) device (13) for providing moisture and heat to cold oxygen supplied to the cannula from an oxygen concentrator. The HME device forms a part of the body and is configured so that cold oxygen passing through the passageway passes through the HME device.

Abstract: A resuscitator includes a flow control unit (5). The unit includes: (a) a peak inspirational pressure valve and controller (“PIP valve”) for controlling the pressure of gas delivered to the lungs of a patient, such as an infant, during inhalation so that the pressure does not exceed a selected PIP pressure, (b) a positive end-expiratory pressure valve and flow controller (“PEEP valve”) for allowing gas flow from the lungs through the PEEP valve during exhalation when the pressure in the lungs is above a selected PEEP pressure, and (c) a blow-off pressure relief valve that opens automatically if the gas pressure being delivered to the lungs exceeds a selected safe operation blow-off pressure that is higher than the selected PIP pressure.