Automatic exhaust blood-return-resistant infusion apparatus

Abstract

The invention discloses an automatic exhaust blood-return-resistant infusion apparatus. The infusion apparatus comprises a bottle plug puncture outfit protective sleeve, a bottle plug puncture outfit, an air filter, a dropping funnel, a flow regulator, a liquid medicament filter, a disposable venous infusion needle and the like and is characterized in that: a precision liquid medicament filtering membrane is arranged at a bottom end inside the dropping funnel; a concave cavity is formed in the middle of a bottom plate inside the dropping funnel; an annular plane is processed around the concave cavity of the bottom plate; the precision liquid medicament filtering membrane is tightly attached to the annular plane of the bottom plate by ultrasonic or high frequency heat seal; the concave cavity of the bottom plate can allow the liquid medicament flowing through the precision liquid medicament filtering membrane to be filtered fully; and an automatic venting device consisting of a venting plug, an air filter and a venting needle is arranged on a dropping funnel cover. The infusion apparatus has the advantages of venting automatically in an infusion process, automatically preventing the liquid medicament from flowing, preventing blood from flowing backwards, simplifying venting operation steps and reducing the working strength of medical care personnel, along with the advantages of simple structure, safety and reliability.

Description

technical field [0001] The invention relates to a sterile medical instrument for clinical infusion, in particular to an infusion set with the functions of automatic exhaust and automatic liquid stop and blood return prevention. Background technique [0002] At present, the common infusion sets commonly used in the medical field are composed of a bottle stopper piercer protective cover, a bottle stopper piercer, a short infusion catheter, a short exhaust catheter, an air filter, a dropper, a drip funnel, a flow regulator, a long infusion catheter, It consists of a liquid medicine filter and a disposable intravenous infusion needle. At the beginning of the infusion, the ordinary infusion set must manually squeeze the dripping funnel to introduce the medicinal liquid from the infusion bottle into the dripping funnel. The gas in the bucket is discharged downwards to form a gas-liquid mixture into the long infusion catheter, thus generating air bubbles. At the same time, due to ...

AI Technical Summary

Problems solved by technology

At the beginning of the infusion, the ordinary infusion set must manually squeeze the dripping funnel to introduce the medicinal liquid from the infusion bottle into the dripping funnel. The gas in the bucket is discharged downwards to form a gas-liquid mixture into the long infusion catheter, thus generating air bubbles. At the same time, due to the surface tension of the inner wall of the long infusion catheter, a small amount of air bubbles are easily absorbed on the inner wall of the long infusion catheter, and the process of removing air bubbles is relatively slow. Difficult, time-consuming and cumbersome, if air bubbles enter the patient's body, it is easy to cause air embolism and other hazards

Therefore, before the infusion, the medical staff must manually drain the air bubbles in the long catheter of the infusion set as much as possible. The usual method of artificial exhaust is: after inserting the bottle stopper puncturer into the infusion bottle stopper, first hang the dripping funnel upside down. , at the same time, squeeze the dripping funnel with your hands to make the medicine liquid enter the dripping funnel. After a certain amount of liquid is filled with the dripping funnel, put down the dropping funnel to remove most of the air bubbles, but there are still a small amount of small air bubbles adsorbed in the infusion solution. On the inner wall of the long catheter, the medical staff have to flick the long infusion catheter with their fingers, so that the absorbed air bubbles can slowly rise into the dripping funnel. This manual air bubble removal process is cumbersome and time-consuming. Simultaneously, also be unfavorable for urgent transfusion and rescue patient

[0003] And in the clinical transfusion process, the labor intensity of the medical staff is very high, usually a medical staff will take care of the infusion of patients in several wards, and it often happens that the medical staff, the patients or the family members of the patients fail to observe in time that the medicinal liquid in the infusion bottle has been transfused. If the infusion bottle is not replaced or the infusion needle is pulled out in time, it will cause the blood to rise back into the entire set of infusion set tubes, or the liquid level will drop too low, which will cause gas to enter the human body and cause gas embolism and other adverse consequences, causing serious harm to medical staff, patients or Patient's family brings heavy mental burden

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