Patent ID: 8479729
Filing Date: 2013-07-09
Classification: A61M

Abstract:
1. An inhalation device for enabling deaggregation of a medicament powder during dispensing of the medicament powder, the device comprising: a cavity containing the medicament powder; and a flow passage including a flat surface region being devoid of a seal component and having an opening into the cavity, wherein an air stream passing along the flat surface region and outside the cavity will generate an eddy in the cavity, such that the generated eddy contributes to deaggregation of the medicament powder in the cavity and emptying of the medicament powder from the cavity, wherein the cavity has a substantially straight downstream edge that extends generally transverse to the direction of the air stream on the flat surface region and a substantially straight upstream edge that extends generally transverse to the direction of the air stream on the flat surface region, the flow passage about the cavity is substantially free of any protrusion extending into the flow passage about the cavity, and the flow passage has opposing side surfaces extending along sides of the opening, the entire length of the opposing side surfaces extending along the entire length of sides of the opening being arranged in a diverging relationship in the direction of the air stream.