Injector safety device
First Claim
Patent Images
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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Accused Products
Abstract
A safety member for use with an injection device is disclosed. The safety member includes a blocking ring extending into a housing of the injection device in blocking association with a latch member associated with a trigger mechanism of the injector, in which the blocking ring blocks movement of a portion of the trigger mechanism into a firing position. The safety member further includes a manipulable portion disposed outside the housing and configured for hand-manipulation by a user to remove the safety member from the housing to unblock the firing mechanism to enable firing of the injector.
428 Citations
32 Claims
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1. An injector, comprising:
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An injector, comprising:
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a housing; a container portion disposed within the housing, defining a fluid chamber containing a medicament, and including a plunger moveably disposed therein and defining a portion of the fluid chamber; a firing mechanism including a ram, the firing mechanism further comprising at least one latch moveably disposed within the housing and configured to engage a portion of the ram in a latching connection, the firing mechanism further comprising an inner housing; a safety member; and a trigger moveably disposed within the housing between a ready position wherein the at least one latch is held in engagement with the portion of the ram by the trigger and a firing position wherein the at least one latch is released from engagement with the portion of the ram, permitting movement of the ram, wherein the safety member is positionable relative to the housing so as to restrict movement of the trigger into the firing position, and further in that the at least one latch extends from a proximal end of the inner housing, wherein an axial movement of the trigger in a proximate direction disengages the latching connection between the at least one latch and the ram. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification