High-reliability self-destruction syringe with medicine dissolving region

Abstract

The invention relates to a high-reliability self-destruction syringe with a medicine dissolving region. The high-reliability self-destruction syringe comprises an outer sleeve (1), a core rod (2), a spring leaf (3), a piston (4), a needle tube (5) and a sheath (6), wherein a hollow column (31) with an assembly notch is arranged at the upper part of the spring leaf (3), the column body of the hollow column (31) is circular or has ridges in vertical direction, inner clamps (32) and outer clamps (33) are arranged at the lower part of the spring leaf at intervals, the inner clamps (32) incline inwards and are clamped at the tapered bottom (241) of a conical step of a corresponding clamped structure of the core rod (2), and the outer clamps (33) extend outwards and are clamped on the inner wall of the outer sleeve (1). Each outer clamp (33) is provided with at least two jaws (331) piercing into the inner wall of the outer sleeve (1) so as to prevent recession, not all the jaws (331) are same in length, the jaw ends of all the jaws (331) are at least distributed on two different circumferences sharing the same axial center with the spring leaf (3), and the depths of the jaws (331) piercing into the inner wall of the outer sleeve are different so that the jaws (331) are clamped in the inner wall of the outer sleeve (1) hierarchically and progressively. The high-reliability self-destruction syringe disclosed by the invention is convenient to manufacture and high in safety.

Description

technical field [0001] The invention relates to a medical device, in particular to a disposable syringe which can be used for dissolving and injecting powder medicine, in particular to a highly reliable self-destructing syringe with a dissolving area. Background technique [0002] Traditional disposable syringes are recycled, sold and reused due to poor management or profit-driven by some medical institutions. As a result, secondary cross-infection of germs occurs and diseases such as hepatitis B and AIDS are spread. In order to limit the occurrence of these bad behaviors and prevent cross-infection and iatrogenic transmission of diseases, organizations such as the World Health Organization and the United Nations Children's Fund have proposed self-destructing syringes that can be destroyed or locked after use and cannot be reused. The Chinese government responded positively and promised to fully implement the plan of self-destructing syringes for vaccination in 2005. [000...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to design a high-reliability syringe with a drug-dissolving area for the problems of inaccurate dose, inconvenient manufacture, poor anti-retraction effect or large injection resistance of the existing disposable drug-dissolving self-destructing syringe. self-destructing syringe

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