Safety injection needle

Abstract

The invention discloses a safety injection needle which comprises an injection needle body. A needle base is arranged at one end of the injection needle body, a needle tube is mounted at one end of the needle base, an internal protecting sleeve is mounted on the outer wall of the needle tube, an outer wall sleeve is mounted on the outer wall of the internal protecting sleeve, the needle base is movably connected with a rotary protecting sleeve through a connecting limit block, a connecting shaft is arranged between the rotary protecting sleeve and the connecting limit block, an internal cavityis formed in the rotary protecting sleeve, an outer wall layer is arranged on one side of the rotary protecting sleeve, a rotary limit block is arranged on one side of the outer wall layer, a first fixed shaft is arranged at one end of the internal cavity, a second fixed shaft is arranged at the other end of the internal cavity, a friction block is arranged at one end of the second fixed shaft, and the outer wall sleeve is arranged on the outer wall of the internal protecting sleeve. The needle tube can be effectively protected by the outer wall sleeve and the internal protecting sleeve and can be conveniently prevented from being accidentally broken while sanitation of the needle tube is protected, and the injection needle body can be protected from damage before use by the aid of the rotary protecting sleeve.

Description

technical field [0001] The invention relates to an injection needle, in particular to a safety injection needle. Background technique [0002] Currently, syringes are a common medical device. As early as the 15th century, the Italian Catinelle proposed the principle of the syringe. The needle is mainly used to extract or inject gas or liquid. The existing injection needle includes a needle base, a needle tube and a round tubular protective cap. The protective cap covers the needle tube to protect the needle tube. When using it, the protective cap is pulled out and put on again after use. The protective cap achieves a protective effect. In the daily medical injection work, when the injection needle is brand new and unused, the needle is not only easy to stab the relevant personnel, but also easy to wear, especially when the needle is used up, the medical staff often discard it in the In the trash can, the needles carry a large number of germs, which are easy to spread to th...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome that the existing injection needles are not only easy to stab the relevant personnel, but also easy to wear, especially when the needles are used up, the medical staff often discard them in the trash can, and the needles carry a large amount of The germs are easy to spread to the crowd, which poses a great threat to public safety and health, and the injected drugs cannot be slightly heated, which is not easy for the human body to absorb. Safe injection needles are provided

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