| abstract |
Inhalation device comprising a body ( 55 ) defining a reservoir ( 56 ) for medicament in the form of a powder, an outlet ( 57 ) through which a user can inhale, and a dosing member ( 53 ) with at least one metering recess formed therein. The dosing member ( 53 ) is moveable between a first position in which the at least one metering recess communicates with the reservoir ( 56 ) to receive a dose of powder therefrom and a second position in which the at least one metering recess communicates with the outlet ( 57 ) to permit the user to inhale the dose. The at least one metering recess is formed in a face of the dosing member which is urged into contact against a similar mating face of the body at the lower end of the reservoir to form a dynamic seal. At least one of the faces ( 51 ) is made of a flexible material having a hardness of less than 80 Shore A. |