Inhler with puncturing of blisters of strip by actuator due to cap rotation

摘要

586973 An inhaler (10) comprising a housing (11) to receive a strip (14) having a plurality of blisters (14a), each blister (14a) having a puncturable lid (14c) and containing a dose of medicament for inhalation by a user, a mouthpiece (13) through which a dose of medicament is inhaled by a user, a cap (12) to cover the mouthpiece (13) and a blister piercing element (16) to pierce the lid (14c) of a blister (14a) is disclosed. The cap (12) is rotatable to drive the strip (14) to sequentially move each blister (14a) into alignment with the blister piercing element (16) and an actuator is operable in response to rotation of the cap (12) to cause the blister piercing element (16) to puncture the lid (14c) of an aligned blister (14a) such that, when a user inhales through the mouthpiece (13), an airflow through the blister (14a) is generated to entrain the dose contained therein and carry it out of the blister (14a) and via the mouthpiece into the user's airway. A link arm is pivotally mounted to the housing and couples the cap to the actuator and pivots in response to rotation of the cap to rotate the actuator, the actuator and the cap being separate components, the mouthpiece being immovably fixed to the housing and the actuator being movable so that it rotates relative to the mouthpiece in response to rotation of the cap to cause the blister piercing element to puncture the lid of an aligned blister.