An injection device (30) has a housing (42, 52) with a recess for receiving a container (34) having a liquid to be injected (32). Furthermore, the device has a first organ (94) for pressing out the injection liquid (32) from such a container (34), and this first organ (94) has an outer threading (92). A dosing organ (66, 88) has an inner threading (90) which engages with the outer threading (92) of the first organ (94), and this dosing organ (66) can rotate together with the first organ (94) relative to the housing (42, 52) for the purpose of selecting a desired injection dosing. A coupling arrangement (K1) serves to produce a rotationally fixed connection between the first organ (94) and the housing (42, 52) during an injection process, and thereby to block a rotation of the first organ (94) relative to the housing (42, 52) during an injection process, however enabling a rotation of the dosing organ (66, 88) relative to the housing (42, 52). This rotation of the dosing organ (66, 88) produces an axial displacement of a first organ in the proximal direction, i.e., toward the patient, said organ being prohibited from rotating, in order to press injection liquid (32) out of such a container (34).
