Disposable transfusion air filter

By using a combination of liquid solvent and membrane air filter in the infusion set, the problem of existing infusion sets being unable to effectively filter out fine airborne foreign objects is solved, achieving efficient filtration of airborne suspended matter, ensuring infusion safety, and being low in cost and easy to operate.

CN121490189APending Publication Date: 2026-02-10李金辉 +1
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Patent Information

Application Number
CN202511820758.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-05
Publication Date
2026-02-10

AI Technical Summary

Technical Problem

The air filters in existing infusion sets cannot effectively filter out fine airborne foreign objects, causing airborne particles to enter the medication solution during the infusion process, affecting the patient's safe medication use.

Method used

Liquid solvents such as 0.9% sodium chloride injection or 5% glucose injection are used as solvents. Through humidification, adsorption and precipitation, combined with membrane air filters, airborne suspended matter is removed to ensure the purity of the drug solution.

Benefits of technology

It effectively filters airborne particles such as dust, smoke, and bacteria, ensuring patient medication safety. It has low production costs, is easy to operate, and is suitable for various infusion environments.

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Abstract

The invention discloses a disposable transfusion air filter and belongs to medical instruments. At present, air filtration of domestic infusion apparatuses generally adopts a membrane technology, and a satisfactory filtration effect on too fine foreign matters or bacteria and viruses is difficult to achieve. According to the disposable infusion air filter, air containing suspended solids (PM2.5, PM10, NO2, SO2, O3, CO, bacteria, viruses and the like) can enter a liquid medicine bottle after being humidified, adsorbed, precipitated and purified through filtration liquid (0.9% sodium chloride injection or 5% glucose injection), so that the medication safety of a patient is guaranteed at a higher level, and the blank of the project in China is filled up. The disposable infusion air filter is only used for filtering air entering a liquid medicine bottle during infusion, and a conventional infusion apparatus needs to be used in a matched mode during infusion. Technical characteristics are shown in Figure 1 in the specification.
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