Easy-puncture aseptic anti-reflux retention needle

Abstract

The invention provides an easy-puncture aseptic anti-reflux retention needle which mainly comprises the components of an elastic band, a main channel, a retention flexible pipe, a puncture steel needle, fixing assemblies arranged at two sides of the main channel, a plugging core and a plugging core guide pipe. The front end of the retention flexible pipe is provided with a transition ring of whichthe thickness reduces in a transfusion direction. The inner wall of the transition ring is frustum-shaped and furthermore can pack the tip of the conical needle point of the steel needle, thereby preventing retention flexible pipe retraction in puncture. The plugging core is arranged in the elastic band and can freely enter or go out of the retention flexible pipe along with stretching and natural retraction of the elastic band so that the retention flexible pipe is in a plugged or open state. The plugging core guide pipe is arranged in the main channel and is used for guiding the plugging core. The aseptic anti-reflux retention needle according to the invention can plug the whole retention flexible pipe in an aseptic sealed state, thereby thoroughly preventing blood reflux and blood coagulation.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an easy-to-puncture sterile anti-reflux indwelling needle. Background technique [0002] Indwelling needle is a common infusion device in clinical application. It reduces the suffering of patients and the workload of medical staff, and also reduces the probability of puncture accidents through a single puncture and repeated use for infusion in the subsequent treatment period. [0003] Because it stays on the patient's body for a long time, and its flexible needle part is in direct contact with the patient's blood. Therefore, the flexible needle tube of the indwelling needle is usually made of biocompatible materials. Some scholars have shown that in the case of keeping the puncture part relatively sterile and the surrounding skin clean, as long as there is no blockage and leakage, the indwelling time of the indwelling needle can reach more than 7 days. The longest re...

AI Technical Summary

Problems solved by technology

Considering the safety of indwelling needles, the existing indwelling needles are all soft flexible materials. When puncturing, there is a difference in diameter between the indwelling hose and the puncture steel needle, resulting in the needle tip of the steel needle piercing the blood vessel. The indwelling hose will still be resisted by the resistance of the blood vessel wall, resulting in the retraction or retreat of the indwelling hose relative to the steel needle, which will cause greater damage to the blood vessel wall

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