| 摘要 |
The present invention is generally directed to a resettable drug delivery device for selecting and dispensing a number of user variable doses of a medicament. The drug delivery device comprises a housing (10), a cartridge holder (20) releasably attached to the distal end of the housing (10), a piston rod (30) engaging a housing insert (150) and a drive member (40), a dose setting member (60) guided within the housing (10) to allow rotation of the dose setting member (60) during dose setting and dose dispensing, and a clutch (120) for rotationally coupling the drive member (40) and the dose setting member (60), According to the invention the housing insert (150) is rotationally constrained to the housing (10) and is axially movable together with the drive member (40) relative to the housing (10) between a dose setting and dispensing position, and a resetting position, in which the drive member (40) is rotationally de-coupled from the housing (10). |
