Kaar, Simon G,Uschold, Robert Charles,Karg, Jeffrey A,Johnson, Timothy Norman
申请号：
ES13004775
公开号：
ES2554916T3
申请日:
2010.07.28
申请国别(地区):
ES
年份:
2015
代理人:
摘要：
A dose counter for counting doses of medication supplied by, or remaining in, a metered dose inhaler, the dose counter comprising: a first cogwheel (230) rotatably mounted, having a circular arrangement of teeth (232 ) ratchet； an indicator coupled to the first cogwheel, the indicator having a visible series of indications of counting indexable doses in response to the rotational movement of the first cogwheel； and an actuator mechanism (218) having a first ratchet drive impeller (242) to be applied to the ratchet teeth (232) of the first cogwheel (230) in response to the delivery of a dose of medication, in the that the actuator mechanism further comprises a second ratchet drive impeller (244) to be applied to the ratchet teeth of a cogwheel coupled to the indicator, and wherein the actuator mechanism is configured such that, during use of the counter of dose to count a supplied dose, a first ratchet tooth of the first gear wheel (230) is rotatably coupled and driven by the first ratchet drive impeller (242) and then a second ratchet tooth of the gear wheel coupled to the indicator is rotatably coupled and driven by the second ratchet drive impeller (244), in which the sprocket arranged for engagement by the second impeller (2 44) The ratchet drive is the first gear wheel (230), in which the first and second ratchet drive impellers (242, 244) are defined by a unit drive member (240), the drive member ( 240) pivotally mounted such that only one of the first and second ratchet drive impellers can be brought into engagement with a toothed ratchet tooth (230) at any time, and in which the actuator mechanism it further comprises an actuator shaft (220) mounted to effect a reciprocating linear movement in response to the delivery of a dose of medicament, characterized in that the drive member (240) is pivotally mounted on the actuator shaft (220) of such that the reciprocating movement of the actuator shaft (220) produces an oscillating movement of the drive member (240)
