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
Estimating the term…
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.
Claims24
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 axially offset air-flow paths,
- a first airstream through a first path of said two axially offset air-flow paths opening said metering chamber by displacement of said piston from the emptying-standby position to the emptying-release position and
- a second airstream through a second path of said two axially offset air-flow paths leading directly from said metering chamber into said annular chamber,
- said annular chamber is disposed upstream of said mouthpiece and where both of the airstreams meet.
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 axially offset air-flow paths,
- an first airstream through a first path of said two axially offset air-flow paths opening said metering chamber by displacement of said piston from the emptying-standby position to the emptying-release position and
- an second airstream through a second path of said two axially offset air-flow paths leading directly from said metering chamber into said annular chamber, said annular chamber is disposed upstream of said mouthpiece and where both of the airstreams meet;
- an axial running channel;
- a deflecting-wall wing;
- and
- an inner cylinder having a lateral-wall side, on said lateral-wall side of said inner cylinder which is moved by said closure cap, of said axially running channel
- which extends from an emptying side of said metering chamber and terminates in said annular chamber,
- said deflecting-wall wing being provided to deflect an axial airstream direction into a circumferential plane.
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 axially offset air-flow paths,
- an first airstream through a first path of said two axially offset air-flow paths opening said metering chamber by displacement of said piston from the emptying-standby position to the emptying-release position and
- an second airstream through a second path of said two axially offset air-flow paths leading directly from said metering chamber into said annular chamber, said annular chamber is disposed upstream of said mouthpiece and where both of the airstreams meet;
- wherein said storage chamber comprises a storage-chamber wall;
- and
- further comprising an indicator in a region of said storage-chamber wall, for indicating an actual filling level of said storage chamber.
Dependencies are inferred from the claim text.