Anti-backflow precision filter infusion set

Abstract

A backflow-preventing precise-filtering infusion apparatus comprises a self-exhausting dripping bucket, a speed adjuster, a guide pipe, a bubble-preventing precise filter, a backflow-preventing connecting valve and a needle pipe. The self-exhausting dripping bucket, the bubble-preventing precise filter, the backflow-preventing connecting valve and the needle pipe are sequentially communicated through the guide pipe, the speed adjuster is arranged on the guide pipe between the self-exhausting dripping bucket and the bubble-preventing precise filter, and the bubble-preventing precise filter is mounted on the guide pipe within a 150mm range distant from a connecting seat output end of the needle pipe. The backflow-preventing precise-filtering infusion apparatus can precisely and effectively filter particles, larger than 5 micrometers, in liquid medicine in the process of infusion, can remove air generated in the process of infusion, can effectively prevent blood returning, can automatically stop infusion after liquid medicine delivery is completed, can avoid blood returning fundamentally and has the advantages of high precision and safety.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anti-backflow precision filter infusion set. Background technique [0002] Infusion sets are one of the commonly used medical supplies for intravenous injection in the medical field. They are often used clinically for disease treatment and emergency rescue. [0003] In the prior art, the infusion set is usually composed of a drip funnel, a governor, a catheter and a needle tube. The liquid in the medicine bottle or bag enters the drip funnel and is directly transported to the venous blood vessel through the catheter. [0004] In the process of infusion, it is very important for the safety of infusion to remove the gas in the liquid and prevent the phenomenon of blood return. If it is not handled properly, in case air enters the catheter at the lower part of the dropping funnel, unexpected blood return will occur. The blood return phenomenon will not only cause the ca...

AI Technical Summary

Problems solved by technology

The blood return phenomenon will not only cause the catheter to be unable to continue infusion due to bubble embolism, but may even cause blood coagulation into blood clots and cause harm to the human body, as well as serious problems such as iatrogenic infection and sepsis. How to deal with this problem and its importance during clinical treatment? Bringing bad consequences has always been a thorny issue

[0005] In the prior art, the treatment methods for the above problems are often focused on the remedial methods of medical staff, such as quickly winding the catheter for exhaust, pulling out the infusion needle for exhaust, etc.

These operations are often very troublesome, not only require experienced medical staff to operate, but also prone to accidents such as pull-off accidents

As a result, not only is the medicinal solution wasted, but also it is easy to cause iatrogenic infection, and even if such a method is used for processing, it only solves the problem of re-infusion. As well as the risk of serious injuries such as iatrogenic infection and sepsis, it is still impossible to fundamentally solve the problem

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