DOSE COUNTER FOR METERED DOSE INHALERS

摘要

A counter for indicating the number of doses left in a canister (3) that is suitable for use in a metered dose inhaler. The counter is affixed to the canister and includes a module (1) for providing an indication of the number of doses left in the canister and a triggering mechanism (8) for updating th e indication in response to activation of the inhaler.