The present invention relates to a medicament delivery device comprising a generally elongated housing, which housing comprises a proximal housing part and a distal housing part arranged and mounted to be movable relative each other a drive force mechanism accommodated in said distal housing part and being slidably arranged in relation to the distal housing part a container filled with medicament arranged within said proximal housing part a holding member operably connected to said drive force mechanism for holding said drive force mechanism in a loaded state, wherein said holding member is arranged to be axially moved in relation to the distal housing part a predetermined distance towards a distal end of the device by the proximal housing part when said housing parts are moved towards each other and an actuation member configured to be biased in relation to the distal housing part from a non-operating position in which the actuation member partially protrudes from the distal housing part to an operating position in which the actuation member is confined within the distal housing, and wherein said actuation member is operably connected to said drive force mechanism for releasing the drive force mechanism from its loaded state wherein said actuation member is resiliently connected to the distal housing part such that said actuation member is always recoiled after being biased regardless of whether the actuation mechanism is released and wherein said drive force mechanism is configured to be released from its loaded state only after the holding member is axially moved in relation to the distal housing part and the actuation member is biased from the non-operating to the operating position.本發明係關於一種藥物輸送裝置包括一普通瘦長外殼,該外殼包括一近端外殼部和一末端外殼部被設置為可相對彼此互相移動;一驅動力機制容納於該末端外殼部內且可相對於末端外殼部滑動;一容器裝滿藥物於該近端外殼部內;一固持構件可操作地連接於該驅動力機制以固持該驅動力機制於負載狀態,其中當該外殼部向彼此移動時,該固持構件藉由近端外殼部而相對於末端外殼部向裝置末端同軸移動一預設距離;和一致動構件相對於末端外殼部從非操作位置偏斜到操作位置,在非操作位置中,致動構件部分從末端外殼部突出,在操作位置中,致動構件被限制於末端外殼內,且其中該致動構件可操作地連接於該驅動力機制以從負載狀態鬆
