| 摘要 |
<p>An injection device for injection of set doses of medicine from a cartridge, in which device a dose is set by screwing a nut (13) up along a threaded piston rod (4), whereby a dose setting drum (17), which carries on its cylindrical surface along a helix a scale of which a number corresponding to the set dose is shown in a window in the housing (1) of the device, and an injection button (19), which is elevated over the end of the device, are moved axially a distance which is larger than the axial movement of the nut. A gear wheel gear transmission (9) is established between the nut and the injection button. <IMAGE></p> |
