Automatic needle injector having safety triggering mechanism
First Claim
Patent Images
1. An injector, comprising:
- a casing having an opening;
a syringe, located within the casing, for holding medication;
a trigger, coupled to the syringe and having at least a safe position and an injection-ready position, for initiating transmission of the medication in response to a) the trigger being in injection-ready position and b) force being applied to a bottom surface of the trigger;
a lever, engaged with the casing, for causing the trigger to move from the safe position into the injection-ready position by moving the syringe in a first direction along a first axis;
a first magnet coupled to at least one of the syringe and the trigger;
a second magnet coupled to the casing; and
a needle, coupled to the syringe, for, responsive to initiation by the trigger, transmitting medication from the syringe into an injection site on a patient;
the magnets being situated to engage with one another so as to assist movement of the trigger into the injection-ready position.
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Abstract
A card-shaped disposable auto-injector includes a two-step safety mechanism to prevent inadvertent use or activation of the injection mechanism. In one aspect, the auto-injector is sized and shaped so as to be easy to carry in a wallet-shaped case. In one aspect, it is rectangular in shape so as to facilitate carrying and storage, and to provide a relatively large amount of surface space for instructional text, diagrams, identifying information, warnings, and the like.
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Citations
20 Claims
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1. An injector, comprising:
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a casing having an opening; a syringe, located within the casing, for holding medication; a trigger, coupled to the syringe and having at least a safe position and an injection-ready position, for initiating transmission of the medication in response to a) the trigger being in injection-ready position and b) force being applied to a bottom surface of the trigger; a lever, engaged with the casing, for causing the trigger to move from the safe position into the injection-ready position by moving the syringe in a first direction along a first axis; a first magnet coupled to at least one of the syringe and the trigger; a second magnet coupled to the casing; and a needle, coupled to the syringe, for, responsive to initiation by the trigger, transmitting medication from the syringe into an injection site on a patient; the magnets being situated to engage with one another so as to assist movement of the trigger into the injection-ready position. - View Dependent Claims (2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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3. An injector, comprising:
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a casing having an opening; a syringe, located within the casing, for holding medication; a trigger, coupled to the syringe and having at least a safe position and an injection-ready position, for initiating transmission of the medication in response to a) the trigger being in injection-ready position and b) force being applied to a bottom surface of the trigger; a lever, engaged with the casing, for causing the trigger to move from the safe position into the injection-ready position by moving the syringe in a first direction along a first axis; a spring coupled to at least one of the syringe and the trigger, the spring biased to assist movement of the trigger into the injection-ready position; and a needle, coupled to the syringe, for, responsive to initiation by the trigger, transmitting medication from the syringe into an injection site on a patient; wherein the spring causes at least one of the trigger and syringe to move in a second direction along a second axis substantially perpendicular to the first axis. - View Dependent Claims (4)
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Specification