Patent ID: 8508385
Filing Date: 2013-08-13
Classification: A61M

Abstract:
1. A metering device which can be activated by a user's suction airstream and intended for an inhalation of a pulverulent substance, including a medicinal substance, the metering device comprising: a piston slidably engaged with a metering rod, the piston having a disk-shaped upper region with tongues extending from an underside of the disk-shaped region; a mouthpiece; and a storage chamber for storing the pulverulent substance; wherein the metering rod has a metering chamber configured to move a portion of the pulverulent substance out of said storage chamber into an emptying-standby position; and wherein the tongues cover and close the metering chamber when the metering chamber is in the emptying-standby position and then release/open the metering chamber when the piston is displaced by the user's suction airstream.