Most people are familiar with metered-dose inhalers. Commonly used by asthmatics, they deliver a specific amount of medication to the lungs in the form of a short burst of aerosolised medicine that is inhaled by a patient.But while such devices are the most commonly used delivery system for treating respiratory diseases, they rely on a user to co-ordinate the firing of the device with an intake of breath, a procedure that, if not optimised, can lead to complications in delivering the correct dosage of drug to the lung.
