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Injector safety device

  • US 9,867,949 B2
  • Filed: 07/23/2014
  • Issued: 01/16/2018
  • Est. Priority Date: 03/10/2008
  • Status: Active Grant
First Claim
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1. An injector, comprising:

  • a housing;

    a container portion disposed within the housing, defining a fluid chamber containing a medicament, and including a plunger moveably disposed therein defining a portion of the fluid chamber;

    a firing mechanism including a ram;

    a latch moveably disposed within the housing and configured to engage a portion of the ram;

    a trigger engageable by a user, the trigger moveably disposed within the housing between a ready position wherein the latch is held in engagement with the portion of the ram and a firing position wherein the latch is released from engagement with the portion of the ram thereby permitting movement of the ram;

    a safety member positionable relative to the housing so as to restrict movement of the trigger from the ready position into the firing position; and

    a guard extending distally of the housing, the guard being retractable with respect to the housing from a protecting position to an actuating position,wherein retraction of the guard from the protecting position to the actuating position causes the trigger to move into the firing position,wherein the safety member restricts movement of the trigger from the ready position into the firing position by preventing movement of the guard from the protecting position into the actuating position, andwherein the trigger is moveable from the ready position to the firing position by a force in a first amount, and wherein a frictional relationship is present between the trigger and the latch creating a retaining force between the trigger and the latch in a second amount such that the first amount is greater than the second amount by about 2.5 lbs of force.

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