Inhaler with breath actuated dose counter and collapsible linkage and trip link coupling transducer and fluid source

摘要

A device is disclosed for dispensing a fluid supplied from a fluid source. The device comprises a transducer adapted to receive a fluid from the fluid source, and a collapsible linkage and trip link (502) coupling the transducer and the fluid source. The linkage has a collapsible joint (66) inhibiting discharge of the fluid source when in a locked orientation. The device further comprises a moveable member coupled to the linkage such that inhalation forces on the device cause the linkage to collapse thereby- discharging the fluid from the fluid source. The device may further include a dose counter coupled to the fluid source for registering the amount of doses administered from the fluid source.