| 摘要 |
<p>There is provided an auto-injector (1) for a syringe that is suitable for use in the injected delivery of drug to a patient. The auto-injector comprises a housing (20) defining a housing cavity and a needle delivery aperture (25), the housing cavity arranged for receipt of a syringe. The syringe is movable within the housing cavity from a rest position, in which the needle tip thereof is within the housing to a use position, in which the needle tip protrudes from the needle delivery aperture. The auto-injector further comprises a drive transfer element (16) for transferring axial drive; and a first coupling (14) for coupling said drive transfer element to said syringe barrel of the syringe. The drive transfer element communicates with said plunger of the syringe for transferring axial drive thereto. The first coupling is a reversible coupling arranged for decoupling when the syringe moves to the use position.</p> |
