The present invention relates to an injection device for dispensing of a liquid medicament, the device comprising: - a base (10), - a medicament reservoir (20) displaceably arranged on the base (10) and containing the liquid medicament (25), - an injection needle (30) displaceably arranged relative to the base (10) between a retracted position (30a) and an extended position (30b), - a pressure container (40) containing a pressurized fluid (24), - a reservoir displacing arrangement (50) coupled with the pressure container (40) to displace the medicament reservoir (20) into a dispensing position (20b), in which the medicament reservoir (20) is in fluid communication with the injection needle (30), - a needle displacing arrangement (60) coupled with the pressure container (40) to at least displace the injection needle (30) into the extended position (30b).本發明有關用於配送液態藥物的注射裝置,該裝置包括:基座(10);藥物儲存器(20),可位移地配置在該基座(10)上及裝盛該液態藥物(25);注射針(30),相對該基座(10)可位移地配置在縮回位置(30a)與延伸位置(30b)之間;壓力容器(40),裝盛加壓流體(24);儲存器位移配置(50),與該壓力容器(40)耦接,以將該藥物儲存器(20)位移進入一配送位置(20b),該藥物儲存器(20)係在該配送位置中與該注射針(30)流體相通;針位移配置(60),與該壓力容器(40)耦接,以至少將該注射針(30)位移進入該延伸位置(30b)。