Injection device
First Claim
1. An injection device comprising a housing in which can be mounted a syringe comprising a barrel for holding a volume of medicament, a needle at one end of the barrel and a plunger axially-moveable in the barrel to a forwardmost position, the injection device further comprising a syringe support means for supporting the barrel at an axial location at or forward of the forwardmost position of the plunger and having a reaction surface for the syringe, whereby in use said reaction surface provides an axial compressive force on said barrel when a forward axial force is applied to the plunger.
2 Assignments
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Accused Products
Abstract
An injection device comprising a housing in which can be mounted a syringe comprising a barrel for holding a volume of medicament, a needle at one end of, the barrel and a plunger axially-moveable in the barrel to a forwardmost position, the injection device further comprising a syringe support means for supporting the barrel at an axial location at or forward of the forwardmost position of the plunger and having a reaction surface for the syringe, whereby in use said reaction surface provides an axial compressive force on said barrel when a forward axial force is applied to the plunger.
133 Citations
27 Claims
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1. An injection device comprising a housing in which can be mounted a syringe comprising
a barrel for holding a volume of medicament, a needle at one end of the barrel and a plunger axially-moveable in the barrel to a forwardmost position, the injection device further comprising a syringe support means for supporting the barrel at an axial location at or forward of the forwardmost position of the plunger and having a reaction surface for the syringe, whereby in use said reaction surface provides an axial compressive force on said barrel when a forward axial force is applied to the plunger.
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26. A method of assembling an injection device comprising the steps of:
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providing a first part-assembly comprising a front housing and a closely fitting end cap;
providing a second part-assembly comprising a rear part of the injection device;
providing a syringe comprising a barrel for holding a volume of medicament, a needle at one end of the barrel and a plunger axially-moveable in the barrel;
providing a syringe support means;
inserting the syringe axially into the rear end of the syringe support means until said syringe support means supports the syringe at a predetermined axial location;
inserting the front end of said syringe and syringe support means into said first part-assembly;
assembling said first part-assembly and second part-assembly together.
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27. A method of assembling an injection device comprising the steps of:
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providing a first part-assembly comprising a syringe support means, a front housing and a closely fitting end cap;
providing a second part-assembly comprising a rear part of the injection device;
providing a syringe comprising a barrel for holding a volume of medicament, a needle at one end of the barrel and a plunger axially-moveable in the barrel;
inserting the syringe axially into the rear end of the first part-assembly until said syringe support means supports the syringe at a predetermined axial location;
assembling said first part-assembly and second part-assembly together.
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Specification