TH80815A - 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 (8)

A needleless injection device (1) comprising a pyrotechnic gas generator (2) including a pyrotechnic force generator comprising two energizers having different combustion rates, at least one piston (13, 14), a primary active liquid reservoir (9), and an injection spout (11), such that one of the two energizers is in the center and is surrounded by another energizer on the outside, and the entire outer surface of the central energizer is in contact with the inner surface of the outer energizer. 2. The device of claim 1, such that the outer energizer is in a solid state. 3. The device of claim 2, such that the two energizers are in contact with each other. 4. The device of claim 1, such that the pyrotechnic force generator is a powder made of various gunpowders, wherein each gunpowder constitutes a central energizer surrounded by an outer energizer, the two energizers having different combustion rates. 5. The device of claim 4, characterized wherein the gas generator (2) comprises a single pyrotechnic force generator made of powder, and a peripheral energizer having a combustion rate greater than that of the central energizer. 6. The device of claim 1, characterized wherein the gas generator (2) is made of a mixture of two powders each containing different types of gunpowder, one consisting solely of the energizer, and the other comprising a central energizer surrounded by peripheral energizers having different combustion rates. 7. The device of claim 4, characterized wherein the powder is obtained by a well-mixing operation. 8. The device of claim 4, characterized wherein the powder is obtained by a coating operation. 9. The device of claim 1, characterized wherein the pyrotechnic force generator comprises a monolithic rod 1 0. The device of claim 2, characterized wherein the central energizer is in a liquid state 1 1. The device according to claim 2, wherein the energy-producing substance in the center is in a gel state 1. 2. The apparatus of claims 10 and 11, characterized wherein the pyrotechnic force generation is achieved by the process of capsule formation 1. 3. The device of claim 1, characterized wherein the central energizing substance comprises at least one of the powders made from at least one of the gunpowders, and the outer energizing substance comprises one of the nitrofilms. 4. The device of claim 13, wherein the nitrofilm comprises an emulsifying agent, a stabilizing agent, and nitrocellulose 1. 5. The device according to claim 13, wherein the powder is a homogeneous powder on a nitrocellulose basis 1. 6. The device according to claim 15, wherein the powder contains nitroglycerin 1. 7. The device according to claim 13, wherein the nitrofilm forms a closed compartment for inserting the powdered pellets. 1. 8. The apparatus of claim 1, wherein the gas generator (2) comprises an ignition system (10) for initiating combustion of the peripheral energy-producing substance.