Patent ID: 6484718
Filing Date: 2002-11-26
Classification: A61M

Abstract:
An inhalation device comprising a body forming a reservoir for powder medicaments, an outlet through which a user can inhale, and a dosing member with at least one metering recess formed therein, the dosing member being movable between a position in which the at least one metering recess communicates with the reservoir to receive a dose of powder therefrom and a position in which the at least one metering recess communicates with the outlet to permit the user to inhale the dose, the at least one metering recess being formed in a first sealing face of the dosing member, said face being mounted in contact against a second sealing face of the body, characterised in that said first sealing face of the dosing member and said second sealing face of the body have highly polished smooth surfaces which form a contacting face to face seal in which said sealing faces adhere to each other sufficiently to exclude air and moisture while being slidable relative to each other, said reservoir comprising medicament in powder form therein.