Safe bubble-free infusion set

Abstract

The invention relates to an aseptic medical instrument for the clinical infusion application, in particular to a safe bubble-free infusion set. An exhaust assembly is arranged on a dropping funnel cover; the exhaust assembly consists of an exhaust needle and an air filter; the exhaust needle passes through the dropping funnel cover to extend into a dropping funnel in a mode of clinging to the inner wall of the dropping funnel; the air filter is arranged at the upper end of the dropping funnel cover and is connected with the exhaust needle; an air filter film is arranged in the air filter and can filter the air entering the dropping funnel; and when the infusion set is used for infusion, the structure of the exhaust assembly can automatically exhaust the air out of the dropping funnel by the exhaust assembly. The safe bubble-free infusion set has the advantages of no bubbles in the infusion process, blood backflow prevention, precise filtration, simple structure, safety and reliability.

Description

technical field [0001] The invention relates to a sterile medical instrument for clinical transfusion, in particular to a safe bubble-free infusion set. 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, an upper dropper, a drip funnel, a flow regulator, and a long infusion catheter. , liquid medicine filter and disposable intravenous infusion needle and other components. At the beginning of the infusion of ordinary infusion sets, the liquid medicine flows out from the dropper through the pipeline and enters the dripping funnel. The liquid easily discharges the gas in the dropping funnel 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 infusion catheter,...

AI Technical Summary

Problems solved by technology

At the beginning of the infusion of ordinary infusion sets, the liquid medicine flows out from the dropper through the pipeline and enters the dripping funnel. The liquid easily discharges the gas in the dropping funnel 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 infusion catheter, the inner wall of the infusion catheter is easy to absorb a small amount of air bubbles, and the process of removing the resulting air bubbles is difficult, time-consuming and cumbersome. If the generated 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 catheter of the infusion set as much as possible. The usual method of artificial exhaust is: after inserting the cork 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 dropping funnel, put down the dropping funnel to remove most of the air bubbles. This manual air bubble removal process is cumbersome and time-consuming. , which is not conducive to emergency infusion and rescue of patients; and usually during the infusion process, the nursing staff, patients and family members of the patients need to observe the liquid in the infusion bottle at any time, so as to avoid the blood rising to the whole set due to the failure to pull out the infusion needle in time at the end of the infusion. In the tube of the infusion set, or the drop of the liquid level is too low, the gas enters the human body and causes adverse consequences such as gas embolism; the liquid medicine filter membrane of the ordinary infusion set can only filter out the impurities of the liquid medicine with a diameter greater than 15 μm, and cannot achieve the precision filtration effect, still There are liquid impurities and particles with a diameter of less than 15 μm that can cause thrombosis and other hazards to the human body

Images