Syringe capable of preventing needle from falling off

Abstract

The invention, which belongs to the field of syringes, particularly relates to a syringe capable of preventing a needle from falling off. The syringe comprises a syringe barrel with a syringe head, apiston mechanism, a cylindrical piston A, a hose, a sliding plug mechanism and the like. The syringe head on the syringe barrel is connected with a needle sleeve with a needle head structure through the hose. Because of cooperation of the sliding plug mechanism, the piston mechanism and the piston A, the injector filled with the liquid medicine can completely inject the liquid medicine in the hoseand the syringe barrel into the livestock and poultry body in the injection process and no more liquid medicine is left in the hose after injection is finished. Compared with simple modification of connecting a needle head structure and an injection head in a common injection device by using a hose, the designed structure of the provided syringe enables no liquid medicine to be left in the hose basically after injection completion, so that the liquid medicine wasting is reduced substantially and thus the syringe size or length that is increased because the residual liquid medicine in the hoseis supplemented to cause insufficient standard injection dosage of the syringe is reduced; the injection cost is reduced, and flexible operation is facilitated.

Description

technical field [0001] The invention belongs to the field of syringes, in particular to a needle drop-proof syringe. Background technique [0002] The epidemic prevention of livestock and poultry is essential in animal husbandry, and the injection of medicinal liquid is very important as a part of the epidemic prevention work; the method of injecting medicinal liquid to the body of livestock and poultry through a syringe can make the sick livestock and poultry get rapid and effective treatment; the traditional When injecting livestock and poultry medicinal liquid syringes, the pain caused by the struggle of the livestock and poultry will cause the injecting syringe to take off or break the needle, which will cause the injection work to the livestock and poultry to be terminated and the treatment of sick animals cannot be completed normally. Poultry liquid injection work. [0003] Aiming at the above-mentioned phenomenon of the needle falling off or breaking due to the strug...

AI Technical Summary

Problems solved by technology

[0002] The epidemic prevention of livestock and poultry is essential in animal husbandry, and the injection of medicinal liquid is very important as a part of the epidemic prevention work; the method of injecting medicinal liquid to the body of livestock and poultry through a syringe can make the sick livestock and poultry get rapid and effective treatment; the traditional When injecting livestock and poultry medicinal liquid syringes, the pain caused by the struggle of the livestock and poultry will cause the injecting syringe to take off or break the needle, which will cause the injection work to the livestock and poultry to be terminated and the treatment of sick animals cannot be completed normally. Poultry injection work

[0003] In view of the above-mentioned traditional medical liquid syringes that cause the needles to fall off or break due to the struggle of livestock and poultry during the injection process, it is necessary to design a syringe that prevents needles from falling off or breaks and can perform injections smoothly.

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