ACTIVATION MECHANISM FOR DRUG DELIVERY DEVICE

Abstract: a drug delivery device includes a housing, an injection assembly at least partially disposed in the housing, a shield, and a drive assembly at least partially disposed in the housing and coupled with the injection assembly and the shield. the shield has an extended position where at least a proximal end thereof extends a distance beyond a proximal end of the housing. the injection assembly includes a needle or cannula having an endpoint. upon moving the shield axially towards the distal end of the housing a predetermined distance, a retraction profile commences whereby the drive assembly administers a medicament via the injection assembly. a peak resistance force is exerted within approximately the first 12 mm of axial movement of the shield.

Inventor(s): Matias Melander, Joshua Jay Dudman, Joseph Michael Iglesias, Bjarke Lykke Ludvig Svendsen, Adam B. McCullough, Christian Plambech, Steve Sanchez

CPC Classification: A61M5/31585 (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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