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    DRIVE MECHANISM FOR AN INJECTION DEVICE
    2.
    发明公开
    DRIVE MECHANISM FOR AN INJECTION DEVICE 审中-公开

    公开(公告)号：EP4434560A2

    公开(公告)日：2024-09-25

    申请号：EP24187060.9

    申请日：2019-03-15

    申请人： SANOFI

    发明人： WALLACE, Andrew Gordon ,  LINDSAY, Andrew Mark ,  MILLINGTON, Georgina ,  JONES, Matthew Meredith ,  MARSH, William Geoffrey Arthur ,  MORRIS, Anthony Paul

    IPC分类号： A61M5/24

    CPC分类号： A61M5/2422 ,  A61M5/31538 ,  A61M5/31553 ,  A61M5/3156 ,  A61M5/31585 ,  A61M5/31595 ,  A61M2205/58220130101 ,  A61M2205/58120130101 ,  A61M2205/603620130101 ,  A61M5/20

    摘要： The present disclosure relates to an injection device for expelling of a number of preset or user-selectable doses of a medicament, the injection device comprising:
    - an elongated housing (10; 310; 410) extending along a longitudinal axis (I),
    - an expelling mechanism (2) comprising a trigger (70) and a piston rod (30),
    - a dose setting mechanism (3) comprising a rotatable member (260; 360; 460; 560) and a counterpart member (240; 340; 440; 540), wherein the counterpart member and the rotatable member comprise a first mechanical code (242; 342; 442; 542) and a second mechanical code (262; 362; 462; 562), respectively,
    - wherein for setting of a dose the rotatable member (260; 360; 460; 560) is rotatable relative to the housing (10; 310; 410) and relative to the counterpart member (240; 340; 440; 540) within a range of numerous rotational states, and wherein during setting of the dose the rotatable member (260; 360; 460; 560) is constrained along the longitudinal axis (I) relative to the housing (10; 310; 410) or relative to the counterpart member (240; 340; 440; 540),
    - wherein for expelling of a dose one of the rotatable member (260; 360; 460; 560) and the counterpart member (240; 340; 440; 540) is displaceable along the longitudinal axis (I) into an expelling position (e) relative to the other one of the rotatable member (260; 360; 460; 560) and the counterpart member (240; 340; 440; 540) only when the first mechanical code (242; 342; 442; 542) is aligned with the second mechanical code (262; 362; 462; 562).