Patent ID: 6032836
Filing Date: 2000-03-07
Classification: A61K,A61M,B65D

Abstract:
A hand held apparatus for creating an aerosolised mist of particles; wherein the apparatus comprises a high pressure vessel containing a solution or suspension of the substance to be aerosolised in a high pressure liquefied gas which is in a sub-critical state, a spray nozzle, and a manually actuatable metering valve for controlling release of the contents of the high pressure vessel to the spray nozzle, and wherein the valve comprises a body having an inlet in communication with the high pressure vessel, an outlet in communication with the spray nozzle, and a metering member including a metering chamber mounted in the body, said metering chamber being adapted to move between a first position in which the metering chamber is in communication with the inlet and a second position in which the metering chamber is in communication with the outlet, and wherein the metering chamber is closer to the outlet when in the second position than when in the first position.