Powder inhaler

A powder inhaler, comprising:

• a container for storing a powdered medicament;
• a metering member having a dosing recess, the metering member being moveable between a filling position in which the dosing recess is in alignment with an opening of the container so as to be filled with a dose of the powdered medicament, and an inhalation position in which the dosing recess is in alignment with an inhalation channel;
• a mouthpiece in communication with the inhalation channel for enabling inhalation of the dose of the powdered medicament contained in the dosing recess of the metering member when the metering member is in the inhalation position;
• and
• a protective member provided between the metering member and the inhalation channel, the protective member being moveable between a closed position in which the protective member at least covers the dosing recess of the metering member when the metering member is in the inhalation position, thereby preventing the powdered medicament contained in the dosing recess from entering into the inhalation channel, and an open position in which the protective member does not cover the dosing recess, thereby exposing the dosing recess to the inhalation channel so as to enable inhalation of the dose of the powdered medicament contained in the dosing recess,
• wherein the inhalation channel comprising a deagglomerator arrangement for deagglomerating a powdered medicament, the deagglomerator arrangement comprising:
• a vortex chamber having an opening for the supply of the powdered medicament;
• at least two air inlets for directing air tangentially into the vortex chamber;
• and
• an outlet for outputting air with the deagglomerated powdered medicament, the outlet being spaced from the air inlets in an axial direction of the deagglomerator arrangement, wherein an outer wall of each air inlet is connected to the other air inlet by an arched wall portion of the vortex chamber, each arched wall portion being positioned non-concentric to a horizontal circle defining a diameter of the vortex chamber.