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Surface models of the mixer-heater portion of the combination HFNC and pharmaceutical aerosol device (combination device) denoted as (a) Design 1, (b) Design 2, and (c) Design 3. The mixer-heater is intended to produce <5% depositional loss of the nebulized dose and fully evaporate the aerosol into dried particles. HFNC, high-flow nasal cannula.
