Patent ID: 6823862
Filing Date: 2004-11-30
Classification: A61B,A61M,A63B

Abstract:
A flow indicator for an inhaler, the flow indicator comprising:a housing defining a mouthpiece, an inlet for connection to a product-dispensing chamber of the inhaler, a chamber positioned between the inlet and the mouthpiece of the indicator, and an indicator member movably mounted in the chamber in such a manner that inhalation at the mouthpiece of the indicator causes the indicator member to move within the chamber, the indicator member being so mounted as to co-operate with a switch member associated with the housing to provide an indication when inhalation is at an optimum rate for a given inhaler attached to the inlet, wherein a vane pivotally mounted within the chamber constitutes the indicator member, and wherein the vane carries a counterweight which is positioned on the opposite side of a pivot to a magnet.