Metering Device for the Inhalation of a Pulverulent Substance
AssigneeSiegfried Generics International AG
InventorsAlfred Von Schuckmann, Yorick Kamlag, Stefan Mayer, Dennis Sandell
Life of this patent
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Abstract
A dosing device can be activated by a vacuum air stream of a user for the inhalation of a powder substance, particularly medicine, which is arranged in a supply chamber and which can be brought out of the same into an open emptying-ready position by a dosing chamber of a dosing rod when the mouthpiece-closure cap is removed. In particular, in order to improve dispensing, the provision of two air paths, of which one serves to open and empty the dosing chamber, and/or the second air path penetrates directly into a ring chamber in order to mix with the air flow containing the substance.
Claims23
1-21. (canceled)
A metering device activated by a suction airstream of a user and is intended for inhalation of a pulverulent substance, including a medicinal substance, the metering device comprising:
- a mouthpiece-closure cap;
- a piston;
- a mouthpiece;
- an annular chamber disposed upstream of said mouthpiece;
- a storage chamber storing the pulverulent substance which can be moved out of said storage chamber when said mouthpiece-closure cap is removed;
- a metering rod having a metering chamber for removing the pulverulent substance out of said storage chamber into an emptying-standby position, in the emptying-standby position said metering chamber being closed by said piston, said piston being displaceable by the suction airstream of the user, in a direction of said mouthpiece into an emptying-release position, in the emptying-release position said metering chamber being released/opened and the pulverulent substance can be removed by means of the suction airstream of the user;
- and
- two air-flow paths, an airstream through a first path of said two air-flow paths opening said metering chamber by displacement of said piston from the emptying-standby position to the emptying-release position and an airstream through a second path of said two air-flow paths leading directly from said metering chamber into said annular chamber, which is disposed upstream of said mouthpiece and where both of the airstreams meet.
Dependencies are inferred from the claim text.