Pre-metered dose magazine for dry powder inhaler

A dose magazine for a dry powder inhaler, comprising:

• a plurality of reservoirs extending between a lower surface and an upper surface of the magazine, the magazine being movable within a housing of a dry powder inhaler so that the reservoirs are sequentially positioned within a delivery passageway of the housing of the dry powder inhaler upon movement of the magazine;
• a lower layer of moisture resistant, air-tight material covering the ends of the reservoirs in the lower surface of the magazine;
• an upper layer of moisture resistant, air-tight material covering the ends of the reservoirs in the upper surface of the magazine, such that the layers of moisture resistant, air-tight material enclose the reservoirs of the magazine in a substantially dry, air-tight manner;
• and
• deployable medicament pistons positioned in the reservoirs, each piston including at least one chamber for holding dry powder medicament, so that deployment of the piston through one of the layers of moisture resistant, air-tight material presents the dry powder medicament to the delivery passageway of the dry powder inhaler for inhalation,
• wherein the dose magazine includes sets of multiple bores each containing a deployable set of medicament pistons, and the inhaler includes a set of deployable actuators for causing deployment of the set of pistons from the magazine.

A dry powder inhaler, comprising:

• a housing having a mouthpiece and a delivery passageway connected to the mouthpiece;
• a dose magazine, including:
• a plurality of reservoirs extending between a lower surface and an upper surface of the magazine, the magazine being movable within the housing so that the reservoirs are sequentially positioned within the delivery passageway of the housing upon movement of the magazine;
• a lower layer of moisture resistant, air-tight material covering the ends of the reservoirs in the lower surface of the magazine;
• an upper layer of moisture resistant, air-tight material covering the ends of the reservoirs in the upper surface of the magazine such that the layers of moisture resistant, air-tight material enclose the reservoirs of the magazine in a substantially dry, air-tight manner;
• and
• deployable medicament pistons positioned in the reservoirs, each piston including at least one chamber for holding dry powder medicament so that deployment of the piston through one of the layers of moisture resistant, air-tight material presents the dry powder medicament to the delivery passageway of the housing for inhalation;
• and
• an actuator for successively deploying the pistons from the magazine as the magazine is moved over the actuator.