TH52170B - A needle-free injection device that acts with two co-energizing agents. - Google Patents

Abstract

The invention discloses a technique for a pre-filled and disposable needle-free injection device that acts as a gas generator and is used for intradermal, subcutaneous or intramuscular injection. This invention involves a needle-free injection device (1) composed of a built (2) pyrotechnical gases including those that generate pyrotechnical forces consisting of two energy-generating substances. One with varying rates of combustion, at least one of the piston (13, 14), the main active liquid reservoir (9), and the injection spout (11). The main feature of this device is the gas generator. (2) Mentioned consists of a force generating A pyrotechnic (4) containing an energy generating substance in the middle which is enclosed by a generating substance. Second outer energy, two energy-generating substances have different rates of combustion. The invention revealed a technique of pre-filled and disposable needle-free injecting devices that acted with a gaseous builder and were used for intradermal, subcutaneous or intramuscular injections. This involves a needle-free injection device (1) that contains a reconstructed (2) pyrotechnical gases including those that generate pyrotechnical forces consisting of two energy-generating substances. One with varying rates of combustion, at least one of the piston (13, 14), the main active liquid reservoir (9), and the injection spout (11). The main feature of this device is the gas generator. (2) Mentioned consists of a force generating A pyrotechnic (4) containing an energy generating substance in the middle which is enclosed by a generating substance. Second outer energy, two energy-generating substances have different rates of combustion.

Claims (18)

1. A needle-free injection device (1) consisting of a pyrotechnic gas generator (2) which includes a pyrotechnic force generator consisting of two energy-generating agents of different combustion rates, at least one piston (13, 14), a reservoir of the main active fluid (9), and an injection nozzle (11), characterized by one of the two energy-generating agents being central and surrounded by the other energy-generating agent which is periphery, and all of the outer surfaces of the central energy-generating agent being in contact with the inner surfaces of the periphery energy-generating agent. 2. A device as described in claim 1 in which the peripheral energy-generating substance is in a solid state. 3. An apparatus under claim 2 characterized by two energy-generating substances being in direct contact with each other. 4. A device according to claim 1 characterized by a pyrotechnic force generated by a powder made of multiple gunpowders, in which each powder makes up a central energy source surrounded by an outer energy source, and the two energy sources have different combustion rates. 5. An apparatus under claim 4 characterized by a gas generator (2) consisting of a single pyrotechnic force generator made of powder and an peripheral energy generator having a higher combustion rate than the central energy generator. 6. An apparatus under claim 1 characterized by a gas generator (2) being constructed by a mixture of two powders, each containing several types of gunpowder, one consisting of a single energy-generating substance, and the other consisting of a central energy-generating substance surrounded by an outer energy-generating substance of different combustion rates. 7. Equipment as per claim 4 that is of the nature of which the powder is obtained by working to ensure good mixing. 8. Equipment under claim 4 that is of a nature where the powder is obtained through a coating operation. 9. The device under claim 1, which is characterized by the generation of pyrotechnic forces, consists of a monolithic rod. 10. An apparatus under claim 2 characterized by the central energy-generating substance being in a liquid state. 11. A device as described in claim 2, characterized by the central energy-generating substance being in a gel state. 12. Devices under claims 10 and 11 that are characterized by the pyrotechnic force being obtained by a capsule-making process. 13. An apparatus under claim 1 characterized by a central energy source consisting of at least one of the following gunpowder compounds, and an outer energy source consisting of a nitrofil. 14. Devices under claim 13 characterized by the nitrofil being composed of a softening agent, a stabilizing agent, and nitrocellulose. 15. An apparatus under claim 13 in which the powder is homogeneous and based on nitrocellulose. 16. An apparatus under claim 15 in which the powder contains nitroglycerin. 17. An apparatus under claim 13 which is characterized by a nitrofilm forming a closed opening for inserting powdered granules. 18. An apparatus under claim 1 which is characterized by a gas generator (2) containing an ignition system (10) for initiating the combustion of the peripheral energy-generating substance.