| 摘要 |
<p>Disclosed is a resettable drug delivery device which is a pen-type injector. Resettable devices usually require a large number of component parts therefore making the devices large and bulky. The drug delivery device comprises a body (9, 11) having a resettable dose setting mechanism, cartridge holder (7) and means (13, 14) for releasably coupling the cartridge holder (7) to the body (9, 11) or the dose setting mechanism. The cartridge holder (7) receives a cartridge (8) containing at least one medicinal product. The means (13, 14) for releasably coupling the cartridge holder (7) to the body (9, 11) of the dose setting mechanism comprises a lug (13) formed on the cartridge holder (7) and the corresponding groove or slot (14) formed on the body (9, 11) or dose setting mechanism. The means (13, 14) are adapted and arranged such that an initial rotational coupling movement of the cartridge holder (7) relative to the body (9, 11) or the dose setting mechanism cause the cartridge holder (7) to move in a first axial direction relative to the body (9, 11) or the dose setting mechanism. A continued rotational coupling movement of the cartridge holder (7) relative to the body (9, 11) or the dose setting mechanism cause the cartridge holder (7) to move in a second axial direction which is contrary to the first axial direction relative to the body (9, 11) or the dose setting mechanism.</p> |
