Injection Device
First Claim
1. An injection device comprising:
- a housing defining a first axis and adapted to receive a syringe having a discharge nozzle so that the syringe is movable between a retracted position in which the discharge nozzle is contained within the housing and an extended position in which the discharge nozzle extends from the housing through an exit aperture;
a drive that is acted upon and in turn acts upon the syringe;
a trigger movable from a rest position, in which it causes the drive to be retained, to an active position, in which it no longer causes the drive to be so retained, thus allowing the contents of the syringe to be discharged through the discharge nozzle; and
a releasable locking mechanism movable from a first position in which the trigger is prevented from moving into its active position to a second position in which the trigger can be moved into its active position,wherein the trigger includes a first portion having a cut-out therein, the first portion extending from a first end of the trigger in a direction substantially parallel to the first axis; and
the releasable locking mechanism includes a protrusion along a second axis for communicating with the first portion of the trigger when the releasable locking mechanism is in its first position and for communicating with the cut-out when the releasable locking mechanism is in its second position.
1 Assignment
0 Petitions
Accused Products
Abstract
An injection device (110) is provided which includes a syringe (122) having a discharge nozzle (118). The syringe is movable between a retracted position in which the discharge nozzle is contained within the housing and an extended position in which the discharge nozzle extends from the housing. A trigger (114) is activatable to allow the contents of the syringe to be discharged through the discharge nozzle. There is also a releasable locking mechanism (116) which, when engaged, prevents the trigger from moving into an active position. The trigger includes a first portion (150) having a cut-out (152) which extends from a first end of the trigger in a direction substantially parallel to the first axis (101). The releasable locking mechanism includes a protrusion (154) along a second axis (181) for communicating with the first portion of the trigger when the releasable locking mechanism is engaged and for communicating with the cut-out when the releasable locking mechanism is disengaged. Such an injection device provides improved protection against accidental activation of the trigger.
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Citations
8 Claims
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1. An injection device comprising:
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a housing defining a first axis and adapted to receive a syringe having a discharge nozzle so that the syringe is movable between a retracted position in which the discharge nozzle is contained within the housing and an extended position in which the discharge nozzle extends from the housing through an exit aperture; a drive that is acted upon and in turn acts upon the syringe; a trigger movable from a rest position, in which it causes the drive to be retained, to an active position, in which it no longer causes the drive to be so retained, thus allowing the contents of the syringe to be discharged through the discharge nozzle; and a releasable locking mechanism movable from a first position in which the trigger is prevented from moving into its active position to a second position in which the trigger can be moved into its active position, wherein the trigger includes a first portion having a cut-out therein, the first portion extending from a first end of the trigger in a direction substantially parallel to the first axis; and
the releasable locking mechanism includes a protrusion along a second axis for communicating with the first portion of the trigger when the releasable locking mechanism is in its first position and for communicating with the cut-out when the releasable locking mechanism is in its second position. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An injection device substantially as hereinbefore described with reference to and as shown in the attached drawings.
Specification