Self-destruction syringe

Abstract

The invention provides a self-destruction syringe which comprises a sleeve, a core rod, a rubber plug and a needle head, the needle head is arranged at the first end of the sleeve, the core rod extends into the sleeve from the second end of the sleeve and can move in the axial direction of the sleeve, the rubber plug is arranged on the core rod and arranged in the sleeve, and a stop head is arranged at the end, close to the needle head, of the core rod. The rubber plug is arranged on one side of the stop head close to the middle of the core rod; the first end of the sleeve is provided with a liquid medicine outlet, the liquid medicine outlet is communicated with the interior of the needle head, the stop head can penetrate out of the liquid medicine outlet and is inserted into the needle head, and the first end of the sleeve can prevent the stop head from retracting into the liquid medicine outlet. The device has the advantages of being simple in structure, convenient to operate and capable of reducing liquid medicine residues.

Description

technical field [0001] The invention relates to the field of syringes, in particular to a self-destructing syringe. Background technique [0002] As a puncture medical device consumable in direct contact with the human body, the syringe is widely used in clinical due to its simple structure, low manufacturing cost and convenient use. However, the structure and shape of ordinary syringes do not change after use, which is easy to be reused by bad personnel and cause cross-infection. With the increased emphasis on public health safety, self-destructing syringes have emerged. [0003] The existing self-destructing syringe mainly cooperates with each other by adding a reverse cutting edge on the inner wall of the sleeve barrel and adding a buckle on the core rod, and after the injection is completed, the core rod is broken or the core rod is kept in the sleeve. in the barrel. These self-destructing syringes have complex structures, small accessories, and a large number of acce...

AI Technical Summary

Problems solved by technology

These self-destructing syringes have complex structures, small parts, and a large number of parts, which is not conducive to the design and opening of injection molds. The production efficiency of injection molding is low. It is difficult to realize automatic assembly in the assembly stage of the product. The efficiency of manual assembly is low and the quality is difficult to guarantee.

In the process of use, some self-destructing syringes need to perform additional manual auxiliary actions to achieve self-destructing, which is inconvenient to operate

And when injecting special medicinal liquids such as insulin and immune vaccines, there is often a certain amount of medicinal liquid remaining in the sleeve, that is, the medicinal liquid in the inner hole of the cone head end of the sleeve cannot be completely pushed out for injection, resulting in waste of medicinal liquid

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