Patent ID: 8696618
Filing Date: 2014-04-15
Classification: A61M

Abstract:
1. An injector for injecting a medicament into a patient, comprising: a container, the container defining a first chamber containing a fluid, and a second chamber; an injection conduit in association with the container and configured for directing a fluid fired from the container into the patient, the injection conduit having a position that is fluidly incommunicated with the second chamber; a transfer mechanism operable by a user to transfer the fluid from the first chamber to the second chamber in a first stage of operation; a firing mechanism operable by the user for firing the fluid from the second chamber through the injection conduit in a second stage of operation, the firing mechanism including a needle guard that has a protective position disposed for covering a needle of the injection conduit, and a retracted position exposing the needle; a cap covering the injection conduit, the needle, and the needle guard; an energy source in powering association with the transfer and firing mechanisms to drive transfer and firing mechanisms in both the first and second stages; and a transfer control that is manually operable to operate the transfer mechanism in the first stage of operation and to fluidly communicate the injection conduit with the second chamber in the first stage of operation, wherein the needle guard is configured for causing the firing mechanism to fire the fluid when moved to the retracted position.