Patent ID: 9038630
Filing Date: 2015-05-26
Classification: A61M

Abstract:
1. A delivery device for delivering a metered amount of a powdered substance, the delivery device comprising: a mouthpiece through which a user in use exhales; an outlet through which substance is in use delivered; a housing fluidly connected to the mouthpiece and the outlet, such that exhalation by the user through the mouthpiece creates an air flow through the housing and from the outlet; and a substance-dispensing unit which is disposed within the housing and operative to dispense a metered amount of a powdered substance into an entraining air flow as created through the housing, wherein the substance-dispensing unit includes a baffle which extends across a longitudinal axis of the housing and separates the housing to define an inlet cavity which is upstream of the baffle and an outlet cavity which is downstream of the baffle, wherein the inlet and outlet cavities are located to opposite sides of the baffle in longitudinal relation to a longitudinal extent of the longitudinal axis of the housing, and the baffle supports a container for containing substance which includes an opening which in use opens to the outlet cavity, with the baffle including at least one entraining air flow channel which is disposed adjacent the container and provides a fluid communication path between the inlet and outlet cavities to provide for delivery of at least one entraining air flow adjacent the opening of the container which entrains substance when dispersed from the container, and at least one dispersion air flow channel which is configured to provide for at least one dispersing air flow into the container in a direction opposite the at least one entraining air flow to disperse the substance from the container and into the at least one entraining air flow as generated through the at least one entraining air flow channel.