Automatic injector device
First Claim
Patent Images
1. An automatic injector device comprising:
- a frame;
a removable injection syringe comprising a syringe body, a syringe piston and at least one injection needle;
a syringe cradle carrying said syringe body and forming therewith a syringe-cradle assembly which is slidably mounted with respect to said frame by means of guiding means;
drive means coupled to said syringe-cradle assembly for actuating said syringe-cradle assembly in reciprocating motion between a retracted rear position which is a non-operative position of said injector device and an operative front position corresponding to the injection position, and for actuating said syringe piston with respect to said syringe body;
stop means located on said frame and delimiting said front position of said syringe-cradle assembly;
said drive means including an electromagnet actuating a magnetic core connected to a movable member bearing upon said syringe piston, said drive means driving said syringe piston simultaneously with said syringe-cradle assembly in rectilinear displacement towards its front position and then only driving said syringe piston when said syringe-cradle assembly reaches its front position, said drive means further including resilient means for resiliently returning said syringe-cradle assembly to its retracted rear position; and
control means for selectively energizing said electromagnet.
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Abstract
An automatic injector device operating stroke-by-stroke, comprising a frame whose shape is substantially similar to that of a revolver, a removable injection syringes comprising a syringe body, a syringe piston and at least one injection needle, a syringe-cradle carrying the said syringe and itself supported by the said frame, drive means on the one hand actuating in reciprocating motion the cradle-syringe assembly, and on the other hand actuating the syringe piston, and means for manually starting at least one injection, such as for example a trigger, which operates at least a part of said drive means.
267 Citations
12 Claims
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1. An automatic injector device comprising:
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a frame; a removable injection syringe comprising a syringe body, a syringe piston and at least one injection needle; a syringe cradle carrying said syringe body and forming therewith a syringe-cradle assembly which is slidably mounted with respect to said frame by means of guiding means; drive means coupled to said syringe-cradle assembly for actuating said syringe-cradle assembly in reciprocating motion between a retracted rear position which is a non-operative position of said injector device and an operative front position corresponding to the injection position, and for actuating said syringe piston with respect to said syringe body; stop means located on said frame and delimiting said front position of said syringe-cradle assembly; said drive means including an electromagnet actuating a magnetic core connected to a movable member bearing upon said syringe piston, said drive means driving said syringe piston simultaneously with said syringe-cradle assembly in rectilinear displacement towards its front position and then only driving said syringe piston when said syringe-cradle assembly reaches its front position, said drive means further including resilient means for resiliently returning said syringe-cradle assembly to its retracted rear position; and control means for selectively energizing said electromagnet. - View Dependent Claims (2, 3, 4, 5)
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6. An automatic injector device comprising:
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a frame; a removable injection syringe comprising a syringe body, a syringe piston and at least one injection needle; a syringe cradle carrying said syringe body and forming therewith a syringe-cradle assembly which is slidably mounted with respect to said frame by means of guiding means; drive means coupled to said syringe-cradle assembly for actuating said syringe cradle assembly in reciprocating motion between a retracted rear position which is a non-operative position of said injector device and an operative front position corresponding to the injection position, and actuating said syringe piston with respect to said syringe body; stop means located on said frame and delimiting said front position of said syringe-cradle assembly; said drive means including an electromagnet actuating a magnetic core connected to said syringe-cradle assembly for driving said syringe-cradle assembly in rectilinear displacement towards its front position, an electric motor, a screw rotatably driven by said electric motor and a movable member threadably connected to said screw and bearing upon said syringe piston, said screw and movable member comprising a transmission for driving said syringe piston in rectilinear displacement with respect to said syringe body, said drive means further including resilient means for resiliently returning said syringe-cradle assembly to its retracted rear position; and control means for selectively energizing said electromagnet and said electric motor. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification