Dual strip dry powder inhaler and manifolds for use therein

A manifold for use in an inhaler device for the simultaneous delivery of powdered medicament from an open blister pocket of each of a first blister strip and a second blister strip, the manifold comprising:

• a body defining
• a first atrium that includes an atrium inlet, a first atrium outlet and a second atrium outlet,
• a second atrium that includes an atrium inlet, a first atrium outlet and a second atrium outlet, and
• at least one stack that includes at least one stack outlet, a first stack inlet, a second stack inlet, a third stack inlet, and a fourth stack inlet, wherein
• the first atrium outlet of the first atrium is in fluid communication with the first stack inlet to define a first diversion airflow path of the manifold,
• the first atrium outlet of the second atrium is in fluid communication with the third stack inlet to define a second diversion airflow path of the manifold,
• the second atrium outlet of the first atrium is in fluid communication with the second stack inlet to define a first entrainment airflow path associated with an open blister pocket of the first blister strip, and
• the second atrium outlet of the second atrium is in fluid communication with the fourth stack inlet to define a second entrainment airflow path associated with an open blister pocket of the second blister strip,
• wherein, for each of the first atrium and the second atrium, the first atrium outlet and the second atrium outlet are positioned at opposite sides of the first atrium and second atrium.