Automatic injection device
First Claim
Patent Images
1. An automatic injection device comprising:
- a housing element arranged along a longitudinal axis;
at least one resilient element arranged to be located within said housing element;
a syringe containing a medicament therewithin; and
a needle guard having at least a pre-injection operative orientation and a post-injection operative orientation, said needle guard being directly locked to said syringe in said post-injection operative orientation, whereby, in said post-injection operative orientation, after ejection of at least some of said medicament from said syringe, when said needle shield and said syringe being attached to said housing element, said needle guard is displaceable rearwardly along said longitudinal axis relative to said housing element only upon corresponding displacement of said syringe.
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Accused Products
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
21 Claims
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1. An automatic injection device comprising:
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a housing element arranged along a longitudinal axis; at least one resilient element arranged to be located within said housing element; a syringe containing a medicament therewithin; and a needle guard having at least a pre-injection operative orientation and a post-injection operative orientation, said needle guard being directly locked to said syringe in said post-injection operative orientation, whereby, in said post-injection operative orientation, after ejection of at least some of said medicament from said syringe, when said needle shield and said syringe being attached to said housing element, said needle guard is displaceable rearwardly along said longitudinal axis relative to said housing element only upon corresponding displacement of said syringe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An automatic injection device comprising:
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a housing element; a syringe including at least one syringe piston and containing a medicament therewithin; 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 for displacing said syringe relative to said housing element from said non-penetration position to a penetration position, and in a post-injection orientation, after ejection of at least some of said medicament from said syringe, when said needle shield and said syringe being attached to said housing element, to lock said syringe directly to said needle guard thereby preventing movement of said syringe relative to said needle guard, whereby rearward displacement of said needle guard relative to said housing element requires corresponding rearward displacement of said syringe; said needle guard being operative to permit displacing said syringe relative to said housing element from said non-penetration position to said penetration position. - View Dependent Claims (18, 19, 20, 21)
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Specification