Automatic injection device
First Claim
Patent Images
1. An automatic injection device comprising:
- a housing element;
at least one resilient element arranged to be located within said housing element;
a syringe including at least one syringe piston;
a needle guard adapted for selectable positioning with respect to said housing element; and
a selectable driving element adapted, when actuated, to be driven by said at least one resilient element for initially displacing said syringe relative to said housing element from a non-penetration position to a penetration position and thereafter displacing said at least one syringe piston in said syringe to effect drug delivery and displacing said needle guard into a needle guarding position.
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Abstract
An automatic injection device including a housing element, at least one resilient element arranged to be located within the housing element, a syringe including at least one syringe piston, a needle guard adapted for selectable positioning with respect to the housing element and a selectable driving element adapted, when actuated, to be driven by the at least one resilient element for initially displacing the syringe relative to the housing element from a non-penetration position to a penetration position and thereafter displacing the at least one syringe piston in the syringe to effect drug delivery and displacing the needle guard into a needle guarding position.
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Citations
25 Claims
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1. An automatic injection device comprising:
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a housing element; at least one resilient element arranged to be located within said housing element; a syringe including at least one syringe piston; a needle guard adapted for selectable positioning with respect to said housing element; and a selectable driving element adapted, when actuated, to be driven by said at least one resilient element for initially displacing said syringe relative to said housing element from a non-penetration position to a penetration position and thereafter displacing said at least one syringe piston in said syringe to effect drug delivery and displacing said needle guard into a needle guarding position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An automatic injection device comprising:
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a housing element; at least one resilient element arranged to be located within said housing element; a syringe including at least one syringe piston; a needle guard adapted for selectable positioning with respect to said housing element; and a selectable driving element adapted, prior to being actuated, to retain said syringe in a non-penetration position, and when actuated, to be driven by said at least one resilient element for displacing said syringe relative to said housing element from said non-penetration position to a penetration position, said selectable driving element being operative for displacing said needle guard into a needle guarding position, said needle guard being operative to permit actuation of said selectable driving element for displacing said syringe relative to said housing element from said non-penetration position to said penetration position. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An automatic injection device comprising:
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a housing element; at least one resilient element arranged to be located within said housing element; a syringe including at least one syringe piston; a needle guard adapted for selectable positioning with respect to said housing element; a selectable driving element adapted, when actuated, to be driven by said at least one resilient element for initially displacing said syringe relative to said housing element from a non-penetration position to a penetration position; and a motion damper operative to limit impact on said syringe produced by motion of said selectable driving element, said motion damper comprising at least one elastomeric element; said motion damper providing varying damping as said selectable driving element moves forwardly relative to said housing element; and said varying damping being produced by engagement of said at least one elastomeric element with a surface of varying cross-sectional area as a function of forward displacement of said selectable driving element relative to said housing element, said selectable driving element also being operative for displacing said at least one syringe piston in said syringe to effect drug delivery and displacing said needle guard into a needle guarding position. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification