Why use precision filters for intravenous infusion?
When the infusion set was created, probably no one thought that infusion also had many potential risks and hazards. With the wide application of infusion therapy, the harm caused by infusion has been fully exposed.
Any intravenous infusion will inevitably carry a large amount of harmful substances into the blood. These harmful substances may be dust particles in the production process, or may be glass slag generated when the ampoule is opened during the dispensing process, or may be drugs with different pH values The crystals produced by the reaction may also be bacteria or bacterial endotoxins... They all have a common feature that they are invisible to the naked eye, so they have long been ignored by people. However, as more and more people have infusion reactions, some people start to study infusion devices. They study why some patients get fever during treatment, some patients have repeated treatment effects, and some patients have complications... …
In order to reduce the impact of harmful substances on patients, clinical trials began to experiment with filters with different pore sizes. The conventional infusion set is a 15um filter membrane configured in the drip hopper. This pore size membrane can filter out 15um and more than 15um. However, this pore size membrane has no ability to intercept substances below 15um, so it is not very helpful for critically ill patients, and a precision filter was born. The commonly used precision filters are 5um, 1.2um, and 0.2um. In actual applications, it is divided into adult models, children models, and infant models according to the users; according to the needs of use, it is also divided into preset infusion models and ready-to-use models. The medical staff can choose the precision filter according to the actual situation. In addition, many precision filters have the function of removing air bubbles, thereby reducing the risk of embolism.
Someone has done a lot of research, and the research results point to the use of precision filter treatment, the complications of critically ill patients have been reduced, and the time in ICU has been shortened. The impact of precision filters on infusion still needs more research to confirm, such as how much bacterial endotoxins are allowed to enter the human body, which ones are really harmful particles, which filter should be used in the intensive care unit... International experts We are all actively studying.