Drug inhaler and counter mechanism

Abstract

[Problem] To provide a drug inhaler equipped with a counter mechanism having a simple and compact configuration. [Solution] In this inhaler 100, a mount is gradually peeled off one or a plurality of blister strips in coordination with the operation of a blister opening means, and an amount of a powdered drug corresponding to a single dose is sequentially fed to a space enabling inhalation through an inhalation port 41. The inhaler 100 has a counter mechanism for presenting the remaining number of the drug that is individually packaged by the blister strip in coordination with the operation of the blister opening means. The counter mechanism includes: a counter dial 50 in which a spiral-shaped rack gear 52a is formed on the reverse surface side, and information indicating the remaining number of the drug is displayed so as to be arranged in a spiral shape along the rack gear 52a on the obverse surface side; and a pinion gear 60 that fits with the rack gear 52a and that rotates in a given direction in coordination with the operation of the blister opening means.

Dependencies are inferred from the claim text.