Safety infusion set on basis of bubble point pressure principle

Abstract

The invention relates to the technical field of medical instruments, in particular to a safety infusion set on the basis of the bubble point pressure principle. The technical scheme includes that a liquid medicine filter medium with the bubble point value ranging from 7.85 to 25kPa is selected according to the bubble point pressure principle, infusion of liquid medicine is stopped automatically according to the characteristics of the liquid medicine filter medium when the liquid medicine in the infusion set drips off, so that air can be prevented from entering an infusion tube and safety is guaranteed. Further, an exhaust tube extending to an inner cavity of a dropper is arranged in the dropper, a filter medium capable of exhausting air but not draining liquid is arranged at the extending end of the exhaust tube, so that automatic exhaust is realized significantly and safely and the high-efficiency and safe air separation effect is realized since the infusion set is combined with the bubble point pressure principle.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a safety infusion set based on the principle of bubble point pressure. Background technique [0002] The existing infusion sets have deficiencies and risks in preventing air from entering the blood vessels to cause medical accidents and realizing exhaust gas before infusion simply and stably. Regarding the former problem of preventing air from entering blood vessels, the hundreds of technical solutions that have been proposed are more concentrated on the use of floats to block and stop the infusion. Such methods or products are complicated in terms of manufacturing process, cost or clinical use; regarding the latter To realize the problem of exhaust before infusion, earlier in 1988, the technical scheme of the dropping funnel of the Chinese patent CN 88 2 02270 U medical plastic infusion set provided a dosing pipe on the shoulder of the dropping funnel, and it was propose...

AI Technical Summary

Problems solved by technology

Those skilled in the art with clinical common sense know that the infusion set will move with the hands of the nurse when changing the medicine bottle, and its effect is similar to the change of the body odor of the infusion patient. The change of the flow rate, if the flow rate suddenly increases, it will change its "slower and slower" state, thus breaking its so-called "liquid flow stops flowing" illusion in an instant, causing air to enter the catheter, so the replacement of the medicine bottle of this program It is necessary to close the regulator when changing the medicine bottle, so as to avoid air entering the catheter when changing the medicine bottle, but the key point is that the change of body position does not only appear in the case of changing the medicine bottle, the medicine bottle drips until it is replaced. The length of time for new drugs is not the same every time, and these factors may lead to serious accidents, and the root of these risks is that the "anti-blood return filter" of the solution essentially slows down the infusion flow rate and tends to infuse in a small amount. note instead of true infusion cessation

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