Delivery device for a powder aerosol

摘要

The invention provides a delivery device (10) for a medicament comprising: a housing (50), a receptacle (54) holding a medicament (80) in the form of a powder; and a source of propellant (53), characterized in that the housing (50) provides an inlet (63) and an outlet (56) for the receptacle (54) wherein the inlet (63) is in fluid communication with the source of propellant (53) and is directed against the medicament (80) and the outlet (56) is spaced from the medicament (80) to allow aerosolisation of the medicament (80); the device (10) provides improved delivery efficiency, particularly a delivered fine particle fraction of greater than 20% by weight.