Device - Delivery Timing

	The image on the left illustrates inadequate patient control of drug delivery in which the inhaler jet is introduced far too late into the breath cycle. Delayed introduction of the particulate stream into the mouth results in most of the drug striking the back of the throat. Click on image to animate.
	Coordinated timing of drug emission, synchronised with the breathing cycle results in drug particles that become entrained in the flow and are carried deep into the peripheral airways of the lung for maximum therapeutic effect. Click on image to animate.