Patent ID: 6082356
Filing Date: 2000-07-04
Classification: A61J,A61M

Abstract:
A device (2) for pre-dosing a powder for a dispenser that includes an expulsion channel (12) and a transfer device (16, 17), said pre-dosing device comprising:at least one hermetically closed reservoir (4) containing a dose of powder to be expelled upon an actuation of the dispenser, wherein on each actuation of the dispenser said transfer device transfers an entire dose of powder from one of said at least one reservoir (4) towards said expulsion channel (12) by exerting pressure on a portion of a reservoir (4),wherein each reservoir (4) includes a closure wall (6) adapted to open towards the outside of the reservoir due to the actuation of the dispenser, andwherein said at least one reservoir (4) comprises a cavity defined by a top surface and a bottom surface, one of said surfaces being said closure wall (6) which opens due to a pressure exerted on the other of said surfaces by said transfer device (16, 17), the pressure being transmitted from one of said surfaces to the other via a substantially rigid hollow transfer element (1) interconnecting said surfaces to prevent pressure from being exerted on the powder contained in said reservoir (4).