Blister cracking and blister pack rotation for dry powder inhaler

摘要

To dispense a dose from a blister of a blister pack disk held beneath the cover of a dry powder inhaler into the inhalation chamber of the inhaler, an actuator 146, 148 extending through the inhaler housing pivots the lever 74 mounted on the cover so that the drug in the blister under the other end of the lever is dispensed into the powder duct 124 beneath the blister. A new blister may be brought beneath the lever as the cover is rotated on the housing of the inhaler.