Improved multi-cavity injection syringe

Abstract

The invention provides a multi-cavity injection syringe which is used for body injection, provided with independent drug tubes and mixes drugs in a puncture device, and belongs to the technical field of medical appliances. The improved multi-cavity injection syringe comprises a push rod fixed disc, an injection push rod, a pinch plate, an outer layer injection tube, the puncture device, the independent drug tubes, a needle head, a lower movable needle cover and an upper movable cover, wherein the internal space of the outer layer injection tube is divided into a plurality of cavities, an annular convex structure is respectively arranged outside the upper end and the lower end of the outer layer injection tube, the independent drug tubes can be respectively arranged in the cavities, the pinch plate can be clamped on the convex structure on the upper end in a rotating way, and the puncture device can be pushed and clamped into the convex structure on the lower end. Drugs to be mixed are respectively arranged in the independent drug tubes in a separating way, so that the filling feasibility is better, and the application time on a battlefield can be maximally reduced. The liquor sealing performance is good, the safety and hygiene can be guaranteed by adopting the closed-type needle head; and the push rod can be of a whole and also can be divided into an upper section and a lower section, so that simplicity in assembling and convenience in injection can be realized, each drug tube can be repeatedly used, and rapidness in injection can be realized while rapidness in mixing is realized.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a multi-chamber injector which can be used for human injection, has an independent medicament cartridge and is mixed in a piercing device. Background technique [0002] In modern warfare, chemical weapons are most likely to be used. At present, poisoning by chemical weapons requires several mixed drugs for detoxification. At present, most of the injection products of antidotes are single drugs or two compound drugs. To complete the detoxification injection, only One can be injected and then the other is injected, which delays the first aid to the poisoned wounded in the case of war, and greatly increases the possibility that neurotoxic substances will cause the poisoned wounded to die quickly within 1-2 minutes. Therefore, when a chemical weapons war takes place, soldiers need an injection that can complete self-rescue and mutual rescue within 1-2 minutes. At...

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Problems solved by technology

[0006] The common point of the above two patents is that the liquid medicine needs to be pre-mixed and filled into the syringe while preparing the device. However, there are few pre-mixed devices at home and abroad. Manufacturers cannot satisfy the production of equipment, so it is difficult to realize the overall premixed filling

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