Marsh, William,Morris, Anthony Paul,Butler, Joseph,Jones, Matthew,Steel, Samuel,Avery, Richard James Vincent
申请号：
AU2015282981
公开号：
AU2015282981A1
申请日:
2015.07.01
申请国别(地区):
AU
年份:
2017
代理人:
摘要：
The present invention is generally directed to a spring arrangement for use in a drug delivery device and a drug delivery device comprising such a spring arrangement. The spring arrangement comprises a clutch spring (130) which is located axially interposed between a stationary housing component (10) and an axially movable sleeve (40), which sleeve (40) comprises clutch features (43) adapted to engage corresponding clutch features (121) of a clutch element (120). The clutch spring (130) biases the clutch features (43) and the corresponding clutch features (121) into engagement. The sleeve (40) is coupled to a button (70) such that upon actuation of the button (70) the sleeve (40) is translated against the bias of the clutch spring (130) from a proximal position in which the sleeve (40) is rotationally locked to the housing component (10) into a distal position in which the sleeve (40) is rotationally un-locked from the housing component (10). Upon release of the button (70) the clutch spring (130) translates the sleeve (40) and the button (70) into the proximal position.
