An injection device comprising a housing, a syringe arranged inside the housing and a driver mechanism is disclosed. A movable plunger is arranged inside the syringe, and the driver mechanism drives the movable plunger. The driver mechanism comprises a spring and a cable operatively connected to the movable plunger of the syringe in such a manner that the movable plunger can be moved in a first direction by means of a spring force applied by the spring, and the movable plunger can be moved in a second direction being opposite to the first direction by means of a pulling force applied via the cable.
