Needleless Safety Syringe of Compact Architecture
First Claim
1. A needleless syringe comprising a body, a gas generator, a chamber for expansion of said gases, a reservoir containing the active principle, and an injection system having at least one injection channel, characterized in that the body has a compact architecture inducing the misalignment of the gas generator and of the reservoir containing the active principle, and the gas generator is triggered by a cap which covers said body, said cap being able to slide along said body.
1 Assignment
0 Petitions
Accused Products
Abstract
The technical field is that of pre-filled disposable needleless syringes, operating with a gas generator (100) and used for intradermal, subcutaneous and intramuscular injections of liquid active principle for therapeutic purposes in human and veterinary medicine. The inventive needleless syringe (1) is characterised in that it comprises a compact architecture body (2) and the gas generator (100) is released by a cap (17) covering said body (2), said cap (17) being adapted to slide along said body (2). Said releasing mode provides the syringe with great stability (1) at the time of injection.
107 Citations
17 Claims
- 1. A needleless syringe comprising a body, a gas generator, a chamber for expansion of said gases, a reservoir containing the active principle, and an injection system having at least one injection channel, characterized in that the body has a compact architecture inducing the misalignment of the gas generator and of the reservoir containing the active principle, and the gas generator is triggered by a cap which covers said body, said cap being able to slide along said body.
-
13. A needleless syringe comprising a body, a gas generator, a chamber for expansion of said gases, a reservoir containing the active principle, and an injection system having at least one injection channel, characterized in that the body has a compact architecture inducing the misalignment of the gas generator and of the reservoir containing the active principle, and the gas generator is triggered by a cap which covers said body, said cap being able to slide along said body, characterized in that the injection system ends in a retractable protective plate.
-
14. A needleless syringe comprising a body, a gas generator, a chamber for expansion of said gases, a reservoir containing the active principle, and an injection system having at least one injection channel, characterized in that the body has a compact architecture inducing the misalignment of the gas generator and of the reservoir containing the active principle, and the gas generator is triggered by a cap which covers said body, said cap being able to slide along said body, characterized in that the cap (is continued by a stopper covering the injection system, said stopper having substantially the same cross section as that of the cap which it continues, and the stopper a) has a plane base, b) is connected to the injection system via a system of bayonets, and c) obturates the cap by being in contact with it and in its continuity.
- 15. A needleless syringe comprising a body, a gas generator, a chamber for expansion of said gases, a reservoir containing the active principle, and an injection system having at least one injection channel, characterized in that the body has a compact architecture inducing the misalignment of the gas generator and of the reservoir containing the active principle, and the gas generator is triggered by a cap which covers said body, said cap being able to slide along said body, characterized in that the gas generator is a pyrotechnic gas generator comprising a pyrotechnic charge and an initiation device, the initiation device comprises a primer and a percussion device which includes a spring and a striker, said striker being in the form of a hollow cylindrical component which is provided at one of its ends with a projection and has, on its outer lateral surface, at least two lugs, each having an inwardly curved inclined plane, said striker enclosing said spring.
Specification