MARSH, William,MORRIS, Anthony Paul,BUTLER, Joseph,JONES, Matthew,STEEL, Samuel,AVERY, Richard James Vincent
申请号：
EPEP2015/064979
公开号：
WO2016/001299A1
申请日:
2015.07.01
申请国别(地区):
EP
年份:
2016
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.La présente invention concerne de manière générale un agencement de ressort destiné à être utilisé dans un dispositif d'administration de médicament, et un dispositif d'administration de médicament comprenant un tel agencement de ressort. L'agencement de ressort comprend un ressort d'embrayage (130) qui est interposé axialement entre un élément de boîtier fixe (10) et un manchon mobile axialement (40), lequel manchon (40) comprend des éléments d'embrayage (43) conçus pour mettre en prise des éléments d'embrayage correspondants (121) d'un élément d'embrayage (120). Le ressort d'embrayage (130) sollicite les éléments d'embrayage (43) et les éléments d'embrayage correspondants (121) en prise. Le manchon (40) est accouplé à un bouton (70) de telle sorte que, lors de l'actionnement du bouton (70), le manchon (40) est déplacé en translation à l'encontre de la sollicitation du ressort d'embrayage (130) d'un
