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    • 40. 发明申请
    • DRUG DELIVERY DEVICE WITH OVER-TORQUE PROTECTION MECHANISM
    • 具有过转矩保护机制的药物递送装置
    • WO2018041899A1
    • 2018-03-08
    • PCT/EP2017/071774
    • 2017-08-30
    • NOVO NORDISK A/S
    • KIILERICH, Ebbe
    • A61M5/315
    • Drug delivery device adapted to expel a set dose, comprising an expelling mechanism with a drive spring, a dose setting mechanism with first and second dose setting ratchet parts, a bias spring as well as control means. The control means is adapted to rotate the second ratchet part in a first direction to thereby set a dose when rotating the dose setting member in the first direction, and move the ratchet parts axially out of engagement with each other when the dose setting member is rotated in the opposite direction. When the first and second ratchet parts have been axially disengaged, the drive spring will rotate the second ratchet part in the second direction to thereby reduce the set dose, the bias spring moving the ratchet parts axially into engagement with each other again, this resulting in the set dose being reduced corresponding to one tooth of the ratchet mechanism.
    • 适于排出设定剂量的药物输送装置,其包括具有驱动弹簧的排出机构,具有第一和第二剂量设定棘轮部分的剂量设定机构,偏置弹簧以及控制装置。 控制装置适于在第一方向上旋转第二棘轮部件,从而当在第一方向上旋转剂量设定构件时设定剂量,并且当剂量设定构件旋转时使棘轮部件沿轴向移动脱离接合 在相反的方向。 当第一棘轮部件和第二棘轮部件已经轴向脱离时,驱动弹簧将使第二棘轮部件沿第二方向旋转,从而减小设定剂量,偏置弹簧使棘轮部件再次轴向移动而彼此接合,这导致 设定剂量相应于棘轮机构的一个齿减小。