Metering device for the inhalation of a pulverulent substance
AssigneeSanofi-Aventis Deutschland GmbH
InventorsAlfred Von Schuckmann, Yorick Kamlag, Stefan Mayer, Dennis Sandell
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Abstract
A metering device can be activated by a suction airflow of a user for inhaling a powdery substance, in particular of medicinal type, which is arranged in a supply chamber and can be brought out of there into an apparent discharge standby position by removing a mouthpiece sealing cap by a metering chamber of a metering rod. The metering device provides piston-extensible tabs for sealing off the metering chamber, particularly for the facilitated opening of the metering chamber.
Claims25
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.
Dependencies are inferred from the claim text.