Auto-Injector

Abstract: according to the invention, an auto-injector for administering a dose of a liquid medicament (m) comprises of a substantially cylindrical housing arranged to contain a pre-filled syringe filled with the medicament (m), a needle shroud slibably arranged with respect to the housing and adapted to rest on the skin of a patient receiving an injection, a releasable drive means arranged within the housing that is capable of, upon release, translating the needle shroud in a proximal direction (p) towards a safe position (ps) and a rotating collar rotatably arranged within the housing. the needle shroud in the safe position (ps) surrounds the injection needle after the injection has been carried out. the rotating collar engages the needle shroud in a manner that forces the rotating collar to rotate within the housing when the needle shroud is translated in the proximal direction (p).

Inventor(s): Yannick Hourmand, Timothy Donald Barrow-Williams, Matthew Ekman

CPC Classification: A61M5/2033 (DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals ; means for inserting tampons ; devices for administering food or medicines orally ; containers for collecting, storing or administering blood or medical fluids ); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery ; chemical aspects of surgical articles ); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents )})

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