SELF-INJECTOR

Abstract: the auto-injector contains a torsion spring with stored energy for administration of a liquid active substance. it has a housing with a holder for securing an insertable syringe with barrel, sealing plug and needle, the active substance of which it can discharge hydraulically when triggered to do so. the piston in the barrel can be actuated by a pivot lever articulated on a piston slide guided along a rail in the housing. the other end of the pivot lever is articulated on a pivotable leg of a biased torsion spring. by means of the triggered pivoting movement of the biased spring leg, the piston can slide into the syringe in a pivoting phase with a piston slide, and a barb on the piston slide can latch onto the syringe. in a subsequent pivoting movement, the syringe can be retracted into the housing, such that the needle disappears in the housing.

Inventor(s): Josef FELBER

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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