An injection device for setting and dispensing of a dose of a medicament, the device comprising: - an elongated housing to accommodate a cartridge filled with the medicament and sealed with a piston, the housing comprising a distal end and a proximal end, wherein the distal end points in the direction of a dispensing end of the injection device, - a piston rod extending along a first axis and being threadedly or slidingly engaged with the housing to apply a distally directed thrust to the piston of the cartridge, - a drive member rotationally or threadedly engaged with the piston rod and having a wheel section or geared section, - a drive sleeve extending along a second axis at a radial distance from the first axis and having a wheel section or geared section to mesh with the geared section of the drive member, - wherein a first radial distance between first and second axes (3, 4) at a distal end of the drive sleeve differs from a second radial distance between first and second axes (3, 4) at a proximal end of the drive sleeve, - a substantially tubular cartridge assembled inside the housing and extending along a third axis at a radial distance from the second axis and parallel to the second axis, characterized in that - the first and the third axis (3, 3') almost coincide but are oriented at a nonzero offset angle and wherein the first axis and the third axis substantially overlap in a virtual crossing point that is located distally from a distal end of the piston rod such that a radial extension of at least one of the geared sections (103, 113) of the drive sleeve and the drive member can be reduced compared to a parallel arrangement of the first and second axis (3, 4). - an elongated housing to accommodate a cartridge filled with the medicament and sealed with a piston, the housing comprising a distal end and a proximal end, wherein the distal end points in the direction of a dispensing end of the injection device, - a piston rod extending along a first axis and being threadedly or slidingly engaged with the housing to apply a distally directed thrust to the piston of the cartridge, - a drive member rotationally or threadedly engaged with the piston rod and having a wheel section or geared section, - a drive sleeve extending along a second axis at a radial distance from the first axis and having a wheel section or geared section to mesh with the geared section of the drive member, - wherein a first radial distance between first and second axes (3, 4) at a distal end of the drive sleeve differs from a second radial distance between first and second axes (3, 4) at a proximal end of the drive sleeve, - a substantially tubular cartridge assembled inside the housing and extending along a third axis at a radial distance from the second axis and parallel to the second axis, characterized in that - the first and the third axis (3, 3') almost coincide but are oriented at a nonzero offset angle and wherein the first axis and the third axis substantially overlap in a virtual crossing point that is located distally from a distal end of the piston rod such that a radial extension of at least one of the geared sections (103, 113) of the drive sleeve and the drive member can be reduced compared to a parallel arrangement of the first and second axis (3, 4).