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    • 8. 发明申请
    • Assembly for a Drug Delivery Device
    • 药物输送装置的装配
    • US20120283653A1
    • 2012-11-08
    • US13395701
    • 2010-09-29
    • Catherine Anne MacDonaldRobert VeaseyChristopher JonesGaren Kouyoumjian
    • Catherine Anne MacDonaldRobert VeaseyChristopher JonesGaren Kouyoumjian
    • A61M5/315
    • A61M5/24A61M5/3146A61M5/31543A61M5/31555A61M5/31556A61M5/3156A61M5/3158A61M2005/2407A61M2005/2488A61M2005/2492
    • A resettable drive mechanism for a drug delivery device (1) comprises a piston rod assembly (32) and an interaction member (23). The piston rod assembly (32) comprises a guide track (18) running along the piston rod assembly (32), the guide track (18) comprising at least one delivery section (18A) and at least one reset section (18B). The reset section (18B) is arranged to continue the delivery section (18A). The delivery section (18A) comprises at least one blocking means (19). The interaction member (23) is configured to cooperate with the guide track (18). For delivering a dose of a drug (24), the piston rod assembly (32) is axially displaceable in a dose delivery direction away from an axial starting position, the interaction member (23) cooperating with the delivery section (18A) and the blocking means (19) passing the interaction member (23) when the piston rod assembly (32) is displaced in the dose delivery direction. Axial displacement of the piston rod assembly (32) towards the axial starting position is prevented by mechanical interaction of the blocking means (19) and the interaction member (23) when the interaction member (23) cooperates with the delivery section (18A). For resetting the drug delivery device (1), the interaction member (23) is configured to cooperate with the reset section (18B), the piston rod assembly (32) being axially displaced towards the axial starting position, the blocking means (19) being offset from the interaction member (23) and passing the axial position of the interaction member (23) when the piston rod assembly (32) is axially displaced towards the axial starting position. Also, a piston rod assembly (32) is proposed.
    • 用于药物输送装置(1)的可重置驱动机构包括活塞杆组件(32)和相互作用构件(23)。 活塞杆组件(32)包括沿着活塞杆组件(32)延伸的导轨(18),导轨(18)包括至少一个输送部分(18A)和至少一个复位部分(18B)。 复位部分(18B)布置成继续传送部分(18A)。 输送部分(18A)包括至少一个阻挡装置(19)。 相互作用构件(23)构造成与导轨(18)配合。 为了递送药物(24)的剂量,活塞杆组件(32)可以在远离轴向起始位置的剂量递送方向上轴向移位,相互作用构件(23)与输送段(18A)配合并阻塞 当活塞杆组件(32)在剂量递送方向上移位时,装置(19)使相互作用构件(23)通过。 当相互作用构件(23)与输送段(18A)配合时,通过阻挡装置(19)和相互作用构件(23)的机械相互作用来防止活塞杆组件(32)朝向轴向起始位置的轴向位移。 为了复位药物输送装置(1),相互作用构件(23)构造成与复位部分(18B)配合,活塞杆组件(32)朝着轴向起始位置轴向移位,阻挡装置(19) 当所述活塞杆组件(32)朝向所述轴向起始位置轴向移位时,所述相互作用构件(23)偏离所述相互作用构件(23)的轴向位置。 此外,提出了一种活塞杆组件(32)。