Medical injection syringe with multi-cavity chamber

Abstract

The invention relates to a miscible and multicavity injector which is used for human body injection. The injector comprises a syringe, a push rod, a drug outlet, a syringe needle and a movable cover, the lower part of the syringe is sequentially sealed and divided into a plurality of cavities by baffle plates, a telescopic rod is arranged in the middle of the cavities, the baffle plates are hermetically connected with the telescopic rod, the uppermost layer of the cavities is movably sealed by a push plate, the top end of the telescopic rod passes through the push plate, the position at whichthe telescopic rod is exposed from the push plate end is provided with external threads, sealing is formed between the lowest rod of the telescopic rod and a syringe outlet, the push rod is arranged at the upper part of the syringe, and the diameter of the front end of the push rod is larger than that of the telescopic rod and the front end of the push rod is provided with internal threads. In the injector, a plurality of medicaments which need mixing are separated by the soft baffle plates, the telescopic rod is pulled up by the screw threads in the push rod, meanwhile, the purposes of damaging the baffle plates sealing various cavities and opening a liquid outlet hole is achieved; a first segment of the telescopic rod can fully hold previous three segments, thus achieving the purpose ofrapidly mixing while injecting; the injector is conveniently used and easily carried, and a projection arranged at the top end of the push rod is increased to prevent the push rod from being moved byan integrated syringe; and an enclosed syringe needle helps ensure safety and hygiene. The proposal can minimize the injection time in a battlefield.

Description

technical field [0001] The invention relates to a medical device, in particular to a mixable, multi-chamber syringe for human injection Background technique [0002] In modern warfare, chemical weapons are the most likely to be used. At present, in some cases of chemical weapon poisoning, several mixed drugs are required to detoxify, but now they are mixed one bottle at a time, which delays time, and among them Nerve agent is one of the most toxic chemical warfare agents known. It has a wide range of damage and will cause a large number of poisoned wounded in a very short period of time. If it is not treated in time, it will soon cause death. The speed of soman is relatively fast, about 2 minutes; there are also records that after a person inhales a few mouthfuls of high-concentration soman vapor, he can die within 1 minute. Therefore, when chemical warfare takes place, soldiers are required to complete self-rescue and mutual rescue in a very short period of time, and the d...

AI Technical Summary

Problems solved by technology

However, most of the multi-chamber syringes currently used can only be used once, or the chambers are too few, or the volume is too large, causing inconvenience in use and carrying, and many syringes have complex structures and complicated processes. Can't use the battlefield as a special occasion

[0003] Patent ZL200520052591.3 introduces a double-chamber prefilled syringe, which uses a needle tube divided into upper and lower layers, each layer has a piston plate, and the diameters of the two layers of syringes are not equal, the upper layer of the syringe is larger than the lower layer of the syringe, When in use, pull the piston that blocks the lower syringe into the upper syringe, use the different diameters of the two syringes, mix the medicine, and then push the injection rod downward to push the medicine out. Although this method has two chambers, it achieves The purpose of mixing, but it needs to be pulled up before use, the syringe of this solution is too long, it is inconvenient to use and carry, and it takes a long time to use temporary mixing, the effect is slow, and it cannot be used in emergency situations

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