Core bar component of injector and injector installing it

Abstract

The invention relates to an injector core bar component and an injector employed by the component. The core bar component comprises a sealing plug, a sealing plug base, a spring, a push-pull rod (a tail end of the push-pull rod is arranged with a small sealing plug) and an elastic bayonet lock. Under an interaction of the spring and the elastic bayonet lock, the sealing plug base can be steadily combined with the push-pull rod through the compression and bounce of the spring, press and bounce of the elastic bayonet lock and insertion and extraction of the small sealing plug. An effective automatic control on absorption and effluence of parenteral solution can be realized. In the light of an injector nozzle plug (cover), the injector can not be used secondly. The invention not only can automatically control reusage of the injector, but also can provide safety and reliability, rational design, simple structure, convenient operation and low cost, and the invention can be widely popularized.

Description

technical field [0001] The invention relates to a commonly used medical device, specifically a syringe plunger assembly and a syringe equipped with the assembly. The syringe equipped with the syringe plunger assembly is suitable for clinical injection in various medical institutions. technical background [0002] In order to prevent virus cross-infection due to repeated use of syringes, disposable sterile syringes have been widely used. Although the disposable sterile syringes in the prior art are of various types and have different structures, most syringes use After that, it is still intact, which provides some criminals with an opportunity for secondary use. For example, the implementation standard commonly used by various medical institutions is the disposable sterile syringe of GB15810-2001. The syringe itself is intact after use, and each part still has the function of use, so it is very easy to reuse. The first use is realized by relying on the "Supervision and Manag...

AI Technical Summary

Problems solved by technology

If you want to pull it back, the lock tongue will inevitably be embedded in the groove and the core rod will be stuck in the syringe, making it impossible to absorb the liquid medicine again, so that it cannot be used again

[0004] The disadvantage of this type of syringe is that the set device must go over the annular groove of the barrel to be controlled

If the operator deliberately does not pass the device over the groove, there is still the possibility of secondary use. It can be seen that there are still human factors in its destruction, and it has not yet reached the level of complete self-destruction.

In addition, this syringe still cannot solve the problem of injecting the medicinal liquid once inhaled to multiple people

Therefore, the syringe still cannot fundamentally solve the problem of repeated use

Images