Patent ID: 8616196

Claim:
An inhalation device for delivering doses of medicament to a user comprising: a canister having a proximal end and a distal end, said canister having a valve at the distal end and being adapted to accommodate the medicament to be dispensed to a user, one dose of said medicament being dispensed when said canister is pressed down a first predetermined amount, said first predetermined amount being called a fire point; and a counter which is connected to the proximal end of the canister and configured to count one dose when said canister is pressed down a second predetermined amount, said second predetermined amount being called a count point, wherein at least one of the counter and the canister have a proximally located contact surface for contact between the counter and the canister, the contact surface having a roughened area for increasing the friction between the counter and canister to permit the counter to fixedly be attached onto the canister in a range of different positions in the lengthwise direction such that the combined length of the canister and the counter is variable to within a predefined tolerance.