MARSH WILLIAM,MORRIS ANTHONY PAUL,BUTLER JOSEPH,JONES MATTHEW,STEEL SAMUEL,AVERY RICHARD JAMES VINCENT
申请号：
IN201737002550
公开号：
IN201737002550A
申请日:
2017.01.23
申请国别(地区):
IN
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.
