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High-flow nasal cannula oxygen device. An air/oxygen blender, allowing a fraction of inspired oxygen (FiO2) from 0.21 to 1.0, generates flow up to 60 L/min. The gas is heated and humidified by an active heated humidifier used during mechanical ventilation. The patient breaths medical gas through a unique large-diameter pliable nasal cannula with a single-limb heated inspiratory circuit.
