Disclosed herein is a dose counter (118) for counting doses of medicament dispensed by or remaining in a metered-dose inhaler. The dose counter comprises: a rotatably mounted gear wheel (130) having a circular arrangement of ratchet teeth (132); a display coupled to the gear wheel, the display having a visible array of dose counting indicia indexable in response to rotary motion of the gear wheel; and an actuator mechanism having a driver (152) for rotatably driving the gear wheel in response to the dispensation of a medicament dose, the driver being arranged to engage the ratchet teeth of the gear wheel. The actuator mechanism comprises a pivotally mounted lever or linkage having an input portion. The lever or linkage is arranged to amplify a linear stroke at the input portion such that a linear stroke of the driver exceeds the linear input stroke. By amplifying the stroke in this way, the risk of undercounting due to insufficient stroke length may, be reduced.
申请公布号
WO2011012325(A1)
申请公布日期
2011.02.03
申请号
WO2010EP04790
申请日期
2010.07.28
申请人
IVAX INTERNATIONAL B.V.;KAAR, SIMON, G.;KARG, JEFFREY, A.;JOHNSON, TIMOTHY, NORMAN;USCHOLD, ROBERT, CHARLES
发明人
KAAR, SIMON, G.;KARG, JEFFREY, A.;JOHNSON, TIMOTHY, NORMAN;USCHOLD, ROBERT, CHARLES