DOSE COUNTERS FOR INHALERS, INHALERS AND SHAFTS THEREOF

摘要

A dose counter for a metered dose inhaler having a bod arranged to retain a medicament canister of predetermined configuration for movement of the canister relative thereto; the dose counter comprising; an incremental counting system for counting doses, the incremental counting system having a main body, an actuator arranged to be driven in response to canister motion and to drive an incremental output member in response to canister motion, the actuator and incremental output member being configured to have predetermined canister fire and count configurations in a canister fire sequence, the canister fire configuration being determined by a position of the actuator relative to a datum at which the canister fires medicament and the count configuration being determined by a position of the actuator relative to the datum at which the incremental count system makes an incremental count, wherein the actuator is arranged to reach a position thereof in the count am figuration at or after a position thereof in the canister fire configuration. %WO VM~ 1114432'6 c'frno' I'W2 1 <6 FIG. 7A FIG.4IB -72 if9 At ~ ~t~ 5} / 90 1- FIG K6H4~'