Patent ID: 9050427
Filing Date: 2015-06-09
Classification: A61M

Abstract:
1. A dry powder inhaler, comprising: a dry powder container assembly; and an elongated dry powder delivery tube having a first end with an inlet that has an orientation defined by a first central longitudinal axis and that is configured to communicate with a dose container in the container assembly, a second end that is opposite the first end and that has an outlet that has an orientation defined by a second central longitudinal axis, and a tube wall having a portion with substantially cylindrical outer surface, and wherein at least a longitudinally extending portion of an inner surface of the tube wall has a substantially polygonal cross-section configuration, wherein a plurality of circumferentially spaced-apart air inlet apertures are formed through the tube wall portion adjacent the delivery tube inlet to provide airflow into the tube, and wherein the plurality of air inlet apertures are oriented such that airflow therethrough enters the tube in a direction that is substantially transverse to a longitudinal axis of the tube; wherein dry powder is drawn through the tube from a dose container in the container assembly upon user inhalation through the tube outlet, and wherein the orientation of the first central longitudinal axis relative to the second central longitudinal axis defines an obtuse angle therebetween.