A pressure-assisted breathing system comprises a flow generator, a circuit connecting the flow generator to a patient's respiratory system and an aerosol generator for emitting aerosol particles into the circuit, wherein the circuit defines a path for the emitted aerosol particles having a change in...http://www.google.com/patents/US7290541?utm_source=gb-gplus-sharePatent US7290541 - Aerosol delivery apparatus and method for pressure-assisted breathing systems
