Patent ID: 6615827
Filing Date: 2003-09-09
Classification: A61M,G06M

Abstract:
An inhalation device for dispensing a medicament from a dispenser that has an axially disposed, compression actuated, dose metering valve at a proximal end thereof, said device comprising:(a) a combination of a cylindrical housing and a nozzle body at one housing end, said combination having an internal seat for said valve that is located generally adjacent said nozzle, and having a longitudinal slot in said housing; (b) a cylindrical advance tube in which said dispenser is slidably receivable and that is slidably engageable with said housing, that has helically extending thread means defined exteriorly therein; (c) a circular advance ring which is associatable with said dispenser about said proximal end and that is slidably engagable with said advance tube; (d) one of either said advance tube or said advance ring having a circumferentially extending zigzag track defined therein and the other of said advance tube or said advance ring having at least one radially outwardly projecting stud member defined therein that slidably engages said track when said advance ring is so engaged with said advance tube and with said dispenser; and (e) a level indicator that is slidably engageable with said longitudinal slot and also with said thread means through said longitudinal slot; the interrelationship between (a), (b), (c), (d) and (e) being such that, when said advance ring moves longitudinally and reciprocatingly when said valve is actuated, said stud member exerts a camming action upon said zigzag track whereby said advance tube rotates and said level indicator advances along said longitudinal slot.