Patent ID: 8573204
Filing Date: 2013-11-05
Classification: A61M

Abstract:
1. 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, said annular chamber is disposed upstream of said mouthpiece and where both of the airstreams meet.