Patent ID: 9144648
Filing Date: 2015-09-29
Classification: A61M

Abstract:
1. An injector for injecting medicament in a patient, comprising: a container comprising a fluid chamber containing a first volume of a medicament; an injection conduit associated with the chamber for defining a fluid pathway therefrom to inject the medicament from the chamber to an injection location; a firing mechanism associated with the fluid chamber for expelling the medicament from the chamber through the injection conduit, the firing mechanism comprising: the retractable guard positioned at a distal end of the injector, the retractable guard being moveable between the protecting position and the injection position, wherein the retractable guard is associated with the latch housing such that when the retractable guard is retracted from the protecting position to the injection position it causes the latch housing to slide proximately to allow the trigger protrusions to move radially outwardly from the blocking association with the ram, thereby allowing the ram to actuate the fluid chamber; and a volume-control mechanism operable by a user to select a fraction of the first volume of medicament that is injected when the firing mechanism is actuated to inject the medicament, wherein the firing mechanism is configured to prevent resetting so as to prevent a subsequent injection of the medicament by the injector, thereby configuring the injector as a single-use injector of medicament.