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 dadministration de médicament, et un dispositif dadministration de médicament comprenant un tel agencement de ressort. Lagencement de ressort comprend un ressort dembrayage (130) qui est interposé axialement entre un élément de boîtier fixe (10) et un manchon mobile axialement (40), lequel manchon (40) comprend des éléments dembrayage (43) conçus pour mettre en prise des éléments dembrayage correspondants (121) dun élément dembrayage (120). Le ressort dembrayage (130) sollicite les éléments dembrayage (43) et les éléments dembrayage correspondants (121) en prise. Le manchon (40) est accouplé à un bouton (70) de telle sorte que, lors de lactionnement du bouton (70), le manchon (40) est déplacé en translation à lencontre de la sollicitation du ressort dembrayage (130) dune position prox
