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The difference between precision infusion set and ordinary infusion set

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Update time : 2021-10-06 11:12:23
The difference between precision infusion set and ordinary infusion set

 The annual consumption of disposable infusion sets in my country is 5 billion, and it is increasing at a certain rate every year. However, we don't know much about the dangers of infusion sets. We or our family members face the harm caused by infusion sets every day in the hospital for infusion. In recent years, researchers at home and abroad have discovered that the insoluble particles in the liquid medicine will inevitably enter the human body through intravenous infusion or intravenous injection, which may cause acute reactions or potential dangers, and the harm is serious and long-lasting. These hazards mainly include vascular embolism, infarction, hemorrhage, granuloma, pulmonary fibrosis, allergic reactions, cancer reactions, pyrogen reactions, phlebitis, thrombocytopenia, increased venous pressure, pulmonary hypertension and so on. In view of this situation, the researchers invented a precision filter infusion set that can filter fine particles.

The difference between an ordinary infusion set and a precision filter infusion set: The liquid filter of the ordinary infusion set in clinical use at present uses a cellulose filter membrane, which cannot carry out precise pore size classification. When the amount exceeds a certain amount, or after encountering acid and alkali, Fiber shedding produces a large number of insoluble particles and causes self-contamination. It mainly filters out particles with a diameter above 15μm in the liquid medicine, and the filtration rate for particles below 15μm is low. The filter membrane selected for the precision filtration infusion set is a nuclear porous membrane with a double-layer filter medium. It has strong dirt holding capacity, regular and uniform filter holes, high filtration accuracy, no foreign matter falling off, and small drug adsorption. Strict classification, suitable pore size can be selected according to clinical needs: 5μm, 3μm, 2μm, 1.2μm, 0.2μm. The average diameter of capillaries in the human body is only 7μm-9μm, and the smallest is 4μm. If the fluid is frequently infused, particles with a diameter of more than 4μm in the liquid medicine will accumulate in the capillaries such as the heart, liver, lung, brain, kidney, muscle, and skin. Larger particles can directly cause capillary embolism, causing local insufficient blood supply and tissue hypoxia, leading to edema and inflammation. Smaller particles may be swallowed by macrophages, causing the macrophages to enlarge and form granulomas. These changes can occur in the whole body tissues, especially the lungs. In addition, particles can directly cause exothermic reactions. At present, infusion reactions occur from time to time during the infusion process. In addition to bacterial contamination reactions and pyrogen reactions, particle contamination reactions caused by insoluble particles have also attracted more and more attention. The use of a precision filter infusion set is an effective measure to reduce the infusion reaction, because the liquid filter of the infusion set is the last way to filter out the particles in the liquid. Experts found through experiments that no infusion reaction occurred when using the disposable precision infusion set, while 15 cases of infusion reaction occurred when using the ordinary infusion set.