Disposable safety light-shading syringe

Abstract

The invention discloses a disposable safety light-shading syringe, and belongs to the field of medical apparatuses. The syringe comprises a syringe needle jacket (1), a syringe steel needle (2), a safety light-shading outer cylinder (3), a syringe inner layer (4), a syringe rubber plug (5) and a syringe push rod (6), wherein the syringe needle jacket (1) covers the syringe steel needle (2); a medicine liquid outlet, which is matched with the syringe steel needle (2), is kept in the left end of the syringe inner layer (4); the syringe steel needle (2) covers the medicine liquid outlet in the syringe inner layer (4); the safety light-shading outer drum (3) closely covers the outer circle of the syringe inner layer (4); the syringe rubber plug (5) and the syringe push rod (6) are integrally structured; and the syringe rubber plug (5), which is pushed by virtue of the syringe push rod (6), can move leftwards and rightwards in the syringe inner layer (4), so that medicine liquid in the tube(the syringe) is pushed into human body or outer medicine liquid is sucked into the syringe.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a disposable safe light-proof syringe. Background technique [0002] A syringe is a common medical appliance. The syringe consists of a needle barrel with a small hole at the front end and a matching piston core rod. It is used to inject a small amount of liquid into or withdraw it from areas that are inaccessible by other methods. When the core rod is pulled out, the liquid or gas is sucked from the small hole at the front end of the syringe, and the liquid or gas is squeezed out when the core rod is pushed in. With the continuous development of medical technology, various new types of syringes continue to appear. For example, some light-sensitive drugs need to be protected from light when used. If they are not protected from light, the light will directly irradiate the drug, which has no effect on most drugs. However, for a small number of drugs such as dopamine hydrochloride, v...

AI Technical Summary

Problems solved by technology

With the continuous development of medical technology, various new types of syringes continue to appear. For example, some light-sensitive drugs need to be protected from light when used. If they are not protected from light, the light will directly irradiate the drug, which has no effect on most drugs. However, for a small number of drugs such as dopamine hydrochloride, vinpocetine for injection, furosemide, chlorpromazine hydrochloride injection, etc., it will lead to accelerated oxidation of the drug, making these light-sensitive drugs photochemically degraded, which not only reduces the curative effect of the drug, but also can Color change and precipitation occur, seriously affecting the quality of the drug, and even increasing the toxicity of the drug, so these drugs must be infused in a dark place when used

The traditional light-proof infusion set has a single-layer structure. The light-proof agent is mixed into the needle tube material during the production of the needle tube. The defect is that it is in direct contact with the drug and the liquid medicine. The migration of the light-proof agent during the infusion process is likely to cause contamination of the liquid medicine.

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