Safety-type venous indwelling needle

Abstract

The invention discloses a safety-type venous indwelling needle. The safety-type venous indwelling needle comprises a catheter assembly, a needle tube assembly and a transfusion and injection connector. An anti-needling protection assembly is arranged between a catheter base and a needle base. The anti-needling protection assembly comprises a protection base with a hollow structure, the protection base is provided with a penetrating channel allowing a needle tube to penetrate through, at least one specially-shaped movable body is arranged in the hollow inner portion of the protection base, and a through hole allowing the needle tube to penetrate through is formed in the specially-shaped movable body. When a steel needle penetrates the through hole, the specially-shaped movable body is balanced; after the needle tube is separated from the through hole of the specially-shaped movable body, the specially-shaped movable body turns over or inclines due to the fact that a supporting point is lost and cannot maintain the original state, so that the specially-shaped movable body blocks the steel needle penetrating channel, and therefore the anti-needling purpose is achieved. Meanwhile, during withdrawing of the venous indwelling needle, required tension force is smaller, and therefore the venous indwelling needle is more convenient and more reliable to use and has very good popularization prospects.

Description

technical field [0001] The invention belongs to the field of infusion equipment, in particular to a safe intravenous indwelling needle with anti-acupuncture effect. Background technique [0002] The use of intravenous indwelling needles can reduce the pain caused by repeated venipuncture and the fear of injections, reduce the anxiety of family members, facilitate clinical medication, rescue medication for acute and critical patients, reduce the workload of nurses, and reduce the pain of patients Therefore, intravenous indwelling needles are widely used in clinical practice. [0003] The existing venous indwelling needle is retracted after use, and the needle is contaminated by the blood of the patient. When the medical staff pulls out or cleans and discards the indwelling needle, it is easy to be stabbed by the needle and easily infected with the disease. At the same time, the discarded needle is exposed in the environment. It is easy to cause environmental pollution and ha...

AI Technical Summary

Problems solved by technology

But such a result is that once the external force fails, the goal of anti-needle protection cannot be realized; and if the front-end stop device slides freely in the cavity under the action of gravity, the needle tube still has the possibility of passing out again, so this The structure is not effective and unsafe for anti-needle sticks

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