Safe syringe needle device for syringe

Abstract

The invention discloses a safe syringe needle device for a syringe. The syringe needle device comprises a needle cap and a syringe needle thin tube, multiple groups of pawls are distributed on the periphery of the side wall of the top of the syringe needle thin tube, each group of pawls comprises at least two pawls which are distributed in the length direction of the syringe needle thin tube, multiple pawl insertion grooves where the pawls are correspondingly inserted are formed in the periphery of the inner wall of an inner hole in the bottom end of the needle cap, pawl blocks clamped and matched with the pawls in a one-to-one corresponding mode are fixedly arranged on the inner walls of the pawl insertion grooves, the outer wall of the top end of the syringe needle thin tube is sleeved with a sealing ring in a sealed mode, and the circumferential outer wall of the sealing ring is in sealed connection with the inner wall of the inner hole of the needle cap. The syringe needle device has the advantages that the structural design is reasonable, the structural fixation is firm and reliable, the syringe needle and the needle cap are separated truly and conveniently, and separated recycling of the needle syringe needle is achieved.

Description

technical field [0001] The invention relates to the technical field of medical injection equipment, in particular to a needle device for a safety syringe. Background technique [0002] A syringe is a common medical device. As early as the 15th century, the Italian Catinelle proposed the principle of the syringe. The gas or liquid is withdrawn or injected mainly with a needle. Syringes are also used in medical equipment, containers, and scientific instruments such as some chromatography to inject through a rubber septum. [0003] The needles in the syringes are made of metal, and about 4 billion are used in China every year. From the perspective of saving and reusing resources, the needles should be recycled separately after use. However, most of the needle devices in the existing safety syringes adopt a fixed structure, and it is difficult to separate the needle and the needle cap, and the needle that is difficult to recover does not have any plastic parts attached to it....

AI Technical Summary

Problems solved by technology

However, most of the needle devices in existing safety syringes adopt a fixed structure, and it is difficult to separate the needle from the needle cap, and the needle that is difficult to recover does not have any plastic parts

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