GB2360216A — Inhaler

USPTO Abstract

An inhaler for delivery by inhalation of a medicament from the canister which is compressible to deliver a dose of medicament. The inhaler comprises a housing for holding a canister 2 having a generally cylindrical body 3 with the cylindrical axis of the body 3 in predetermined direction and a loading mechanism for loading a resilient loading element 7 which is arranged, when loaded, to bias compression of the canister 2. The loading mechanism comprises a loading member 8 engaging the resilient loading element 7 and two contact members 9 movable relative to the housing in a movement direction orthogonal to said predetermined direction and arranged to drive the loading member 8 to load the resilient loading element 7, through a cam arrangement between the contact member 8. The cam arrangement may allow for the ratio of the amount of driven movement of the loading member 8 to the amount of mount of the contact members 9 to be non-linear, preferably reducing over the driven movement to compensate for the increasing resistance by the resilient loading element.