An injection device (100) suitable for the delivery of a viscous medicament from a container (10) through a needle (16) disposed at the distal end of the container (10) is disclosed. The device comprises a housing (102), an advancing mechanism (190, 204, 230) operable to move the container (10) relative to the housing from a starting position in which the needle (16) is shrouded and an insertion position in which the needle (16) is exposed, and a stopper drive arrangement operable to move a stopper (22) towards the distal end of the container (10). The stopper drive arrangement comprises a drive body (240) arranged for axial movement with respect to the housing (102), a driveshaft (250) arranged for rotation with respect to the drive body (240), a plunger (202) arranged for axial movement with respect to the drive body (240) to move the stopper (22) upon rotation of the driveshaft (250), and drive means (290) arranged to rotate the driveshaft (250) upon activation of the stopper drive arrangement.揭示一種注射裝置(100)，其適合用於從容器(10)輸送黏性藥物通過設置在該容器(10)之遠端的針頭(16)。該裝置包含：外殼(102)；推進機構(190，204，230)，其可操作以使該容器(10)相對於該外殼從該針頭(16)帶有護套的起始位置移動到暴露該針頭(16)的插入位置；以及塞子驅動配置，其可操作以使塞子(22)向該容器(10)之遠端移動。該塞子驅動配置包含：經配置成對於該外殼(102)可軸向移動的驅動體(240)；經配置成對於該驅動體(240)可旋轉的驅動軸(250)；柱塞(202)，其經配置成對於該驅動體(240)可軸向移動以在該驅動軸(250)旋轉時使該塞子(22)移動；以及驅動構件(290)，其經配置成在該塞子驅動配置激活時可轉動該驅動軸(250)。
