One-way flow stop device for intravenous infusion

Abstract

The invention relates to a disposable venous transfusion one-way check device. According to the venous transfusion one-way check device, a one-way check unit which is integrated with a capillary tube is arranged at the connecting end of the capillary tube and an infusion tube of a disposable venous transfusion device, so that liquid medicine reflux in veins when a patient sits down, stands up or even walks after or during the transfusion process. The venous transfusion one-way check device changes the structure of the disposable transfusion device little, is simple in structure, low in cost and applicable to industrial production, does not change the working habit of medical care personnel, facilitates popularization and application, improves the working efficiency, saves puncture needles and reliefs patients from pain.

Description

technical field [0001] The purpose of the present invention is to provide a one-way flow stop device for intravenous infusion, especially a one-way stop flow device that can prevent reflux and prevent blood return during the entire infusion process. Background technique [0002] The disposable venous infusion set currently used in the field of intravenous infusion does not have the function of preventing backflow of blood during the infusion process and when the infusion is completed; blood backflow often occurs during the infusion, which brings unexpected troubles to patients and medical staff; for this reason, There have been many explorers and pioneers in this field. They have designed and manufactured a variety of devices that are used to automatically stop the flow during and after the infusion and prevent backflow of blood, so as to solve the problem of blood return infusion and reduce the cost of infusion care. increase the labor cost of infusion (reduce the infusion ...

AI Technical Summary

Problems solved by technology

[0002] The disposable venous infusion set currently used in the field of intravenous infusion does not have the function of preventing backflow of blood during the infusion process and when the infusion is completed; blood backflow often occurs during the infusion, which brings unexpected troubles to patients and medical staff; for this reason, There have been many explorers and pioneers in this field. They have designed and manufactured a variety of devices that are used to automatically stop the flow during and after the infusion and prevent backflow of blood, so as to solve the problem of blood return infusion and reduce the cost of infusion care. increase the labor cost of infusion (reduce the infusion accompanying personnel); improve infusion safety, improve service quality, etc., reduce the invalid labor of medical staff, etc.; the current methods to solve the phenomenon of infusion reflux and blood return include: first, add a blocking device in the Murphy's canal, such as Float balls, floating plugs, flap gates, etc., are used to block the lower liquid outlet with the liquid level in the Murphy's tube when the infusion is completed, so that the liquid in the infusion tube is insufficiently reduced, and the pressure in the tube is kept to prevent Backflow of blood; this method uses the principle of gravity, can easily achieve cut-off, and is effectively suitable for patients who are sitting or lying down for infusion, but when the patient's body position changes, such as standing up, walking, or sitting up from a lying state, will cause regurgitation

The second is to install a one-way stop valve on the infusion tube below Murphy's tube to prevent reflux and prevent blood return during the infusion process and when the infusion is completed; this method generally uses latex sleeves, spring plugs, elastic doors, etc., such methods The disadvantage is that there is a certain resistance to the flow of the liquid medicine, which affects the fluidity of the liquid medicine; the third is to use electronic equipment to realize the automatic cut-off of the intravenous infusion to prevent blood return. The basic method is to install a detection device on the infusion tube to detect the infusion in real time. If the infusion is completed in time, the electrical device will be activated to block the infusion tube, so as to prevent reflux and blood return; this kind of method needs to detect the whole process of power consumption, which does not conform to the principle of environmental protection and energy saving, and the cost is high; the fourth is to directly use precision infusion pumps, Not only can it achieve precise control, prevent reflux, but also realize precise infusion and infusion management; this method complicates simple problems, runs counter to the goal of energy saving, environmental protection, and consumption reduction, and requires users to have certain skills, more importantly The most important thing is that this method is non-gravity infusion, and what is natural is also scientific. If you lose nature, you will lose science; if you lose gravity, you will lose safety.

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