Patent ID: 8348898
Filing Date: 2013-01-08
Classification: A61M

Abstract:
1. A needle assembly adapted for fluid communication with a vial containing a substance to be delivered to a subject, the needle assembly comprising: a needle held in a needle holder, said needle holder confined to move in a housing; and an activation mechanism for activating delivery of the substance through said needle, said activation mechanism comprising a safety latch that initially impedes movement of said needle holder, wherein when said safety latch is placed on the subject, said safety latch moves to a position that permits moving said needle holder to cause said needle to protrude outwards of said housing to pierce the subject to allow administration of the substance to the subject; characterized by a biasing device arranged to apply a biasing force on said needle to cause said needle to protrude outwards of said housing to pierce the subject, and needle release apparatus comprising a needle arrestor that initially blocks movement of said biasing device and which releases said biasing device when said safety latch moves to the position that permits moving said needle holder to cause said needle to protrude outwards of said housing.