WILDEN, Bjrn,BAYER, Stefan,ZEITZ, Philipp,PELZER, Wolfgang
申请号：
HK16102882.9
公开号：
HK1214976A
申请日:
2016.03.14
申请国别(地区):
HK
年份:
2016
代理人:
摘要：
The present invention relates to a drive mechanism of a drug delivery device for dispensing of a dose of a medicament, the mechanism comprising: an elongated housing (20) extending in an axial direction (1, 2), a piston rod (160) to operably engage with a piston (14) of a cartridge (12) to displace the piston (14) in axial distal direction (1), a dose setting member (120 220) rotatably arranged at a proximal end of the housing (20) for setting of a dose, a base member (60 260) having a proximally extending shaft portion (61 261) at least partially enclosed by the dose setting member (120 220), a last dose limiting member (140 240) radially disposed between the dose setting member (120 220) and the base member (60 260) and having at least one radial stop (143 243a, 243b) to limit a rotational displacement of the dose setting member (120 220) relative to the base member (60 260), wherein the last dose limiting member (140 240) is rotatably locked but axially displaceable to one of the base member (60 260) and the dose setting member (120 220) and wherein the last dose limiting member (140 240) is threadedly engaged with the other one of the base member (60 260) and the dose setting member (120 220).
