Disposable syringe with low pain

Abstract

The invention discloses a disposable syringe with low pain. The disposable syringe with the low pain includes a needle cylinder, a piston rod arranged in the needle cylinder, a syringe needle connected with the front end of the needle cylinder, and a filter net arranged between the syringe needle and the front end of the needle cylinder; the outer surface of the needle cylinder is provided with bulged scales, the portion, close to the front end, of the outer surface of the needle cylinder is provided with a lug which is fixedly connected with a connecting rod, and the end of the connecting rodis connected with a pull ring; the syringe needle includes a syringe needle connecting base connected with the front end of the needle cylinder, a needle tubing connected with the syringe needle connecting base, and a needle point positioned at the end of the needle tubing, the filter net is arranged between the syringe needle connecting base and the needle cylinder, the outer surface and inclined plane of the needle point are provided with grooves which are arranged at equal intervals and in stripe shapes, and the arrangement direction of the grooves is perpendicular to the axial direction of the needle point. The disposable syringe with the low pain can filter large particles or particles dissolved deficiently in medicinal liquid, and has a slide resistance effect to make slides unlikely when being used for syringing; by arranging the stripe-shaped grooves in the needle point, the syringe needle reduces the pain when being used for syringing.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a low-pain disposable syringe. Background technique [0002] At present, interventional therapy such as drug injection and puncture sampling are the main means of clinical medicine. In the process of injection and puncture, the skin tissue is damaged, and the nerve endings are stimulated to cause pain. The troubles brought by this process to the patient cannot be ignored. Clinically used syringes are mainly composed of needles, needle tubes, and pistons. The smooth surface of this type of syringe can easily cause the needle tube to slide during injection, resulting in puncture failure and increasing pain to patients; Injection pain is an effective means to reduce medical fear and improve people's quality of life. At present, the existing studies on the mechanism of drug injection pain have shown that the pain of injection comes from the pain-causing substances released by the rup...

AI Technical Summary

Problems solved by technology

Some liquid medicines often contain insoluble substances with large particles, or their soluble particles are not fully dissolved. Once these large particles or insufficiently dissolved particles are injected into the body through a syringe and circulate in the human body, it is very likely that they will eventually lead to blockage of blood vessels, which can cause serious harm

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