Patent ID: 6866037

Claim:
Device for use with an inhaler, the inhaler comprising a body, an aerosol canister arranged in said body containing medicament, comprising a metered dose chamber and able to dispense a metered dose of said medicament, a nozzle in fluid communication with said canister, an opening for dispensing of said medicament in fluid communication with said nozzle, said device comprising: an activator ( 34 , 36 , 42 , 44 , 46 , 50 , 52 ) for activating said canister to open and dispense said medicament in response to an airflow in the inhaler caused by inhalation of a user through said opening, and a return controller ( 42 , 46 , 56 , 58 , 60 ) for deactivating said canister to close said opening, wherein, said return controller deactivates said canister when the airflow drops below a certain threshold value, further comprising a drug delivery opening ( 220 ), compartment ( 212 ) containing medicament to be delivered, an energy system comprising actuating means ( 244 , 274 ) capable of delivering a dose of medicament from the compartment and activating means ( 222 , 226 , 230 , 236 ) capable of activating said actuating means, whereupon activation of the device a force/energy acting on the activating means is transmitted to the actuating means, whereby a dose of medicament is delivered through said drug delivery opening, characterized in that said energy system is divided in at least a first and a second energy system, the first energy system comprising said activating ( 222 , 226 ) means and a release means ( 230 , 236 ), said second energy system comprising said actuating means ( 244 , 274 ) and a locking means ( 250 , 260 , 264 , 268 ) operatively connected to the actuating means and capable of locking said actuating means in an energized state, wherein the systems, when the device is non-activated, are in no physical contact with each other, and wherein, upon activation of the activating means, the release means is moved into contact with, and moves, the locking means out of a locking position.