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    • 6. 发明公开
    • DOSE COUNTER FOR A METERED-DOSE INHALER
    • 计量吸入器的剂量计数器
    • EP2459258A1
    • 2012-06-06
    • EP10744881.3
    • 2010-07-28
    • Ivax International B.v.
    • KAAR, Simon, G.KARG, Jeffrey, A.JOHNSON, Timothy, NormanUSCHOLD, Robert, Charles
    • A61M15/00
    • A61M15/0078A61M15/0073A61M15/0075A61M15/009A61M2202/064G06M1/04G06M1/041G06M1/24
    • 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.
    • 本文公开了一种剂量计数器(118),用于计数由计量吸入器分配或保留在其中的药剂的剂量。 剂量计数器包括:可旋转地安装的齿轮(130),其具有棘轮齿(132)的圆形布置; 与齿轮耦合的显示器,所述显示器具有响应于齿轮的旋转运动而可转位的剂量计数标记的可见阵列; 以及具有驱动器(152)的致动器机构,所述驱动器用于响应于药剂剂量的分配而旋转地驱动所述齿轮,所述驱动器布置成接合所述齿轮的所述棘轮齿。 致动器机构包括具有输入部分的枢转地安装的杠杆或连杆机构。 杠杆或连杆布置成放大输入部分处的线性行程,使得驱动器的线性行程超过线性输入行程。 通过以这种方式放大中风,可以减少由于行程不足而导致计数不足的风险。