The high efficiency of the disposable breathing filter is first reflected in its physical interception of suspended pathogens in the air. The filter material inside the disposable breathing filter usually has a fine pore structure. The size of these pores is much smaller than the diameter of common pathogens. When the airflow containing pathogens passes through, the pathogens will be blocked by the pores and cannot penetrate the filter layer, so they are retained on the air intake side of the disposable breathing filter, preventing them from entering the breathing circuit on the other side, cutting off the possibility of the spread of pathogens from the transmission path.
This filterability is particularly effective for pathogens transmitted through droplets. Many respiratory pathogens will attach to droplets and be discharged with breathing. The diameter of these droplets is relatively large, and the high-efficiency disposable breathing filter can easily capture them. Whether it is the bacterial droplets exhaled by the patient or the bacterial droplets that may exist in the outside air, they will be intercepted when passing through the disposable breathing filter, preventing the bacteria in the droplets from being transmitted between doctors and patients and between patients, reducing the risk of cross infection.
For smaller pathogen particles, such as viruses, high-efficiency filtration enhances the barrier effect through adsorption. The surface of the filter material usually carries static electricity. When virus particles pass through, they will be adsorbed on the surface of the material by static electricity. Even if the particle size is smaller than the pores, it is difficult to escape. This adsorption capacity combined with physical interception forms a multi-level protective barrier, ensuring that even tiny viruses cannot penetrate the disposable breathing filter, effectively blocking their transmission through the breathing circuit.
High-efficiency filtration can also form a two-way protection in the breathing circuit. When the patient inhales, the disposable breathing filter can filter the air entering the respiratory tract, remove possible pathogens in it, and protect the patient from external pathogens; when the patient exhales, the disposable breathing filter can filter the pathogens in the exhaled gas to prevent them from contaminating the respiratory equipment or spreading to the surrounding environment, avoiding threats to medical staff and other patients. This two-way barrier keeps the entire breathing process under safe protection.
The high-efficiency filtration of the disposable breathing filter can remain stable during long-term use, ensuring continuous blocking of pathogens. Even after several hours of continuous use, the filter material will not reduce the filtration efficiency due to the adsorption of too many pathogens. Its structural stability ensures that the pores are not blocked and the electrostatic adsorption capacity will not be significantly weakened. This durability allows the disposable breathing filter to work reliably throughout its entire life cycle, especially when critically ill patients require long-term mechanical ventilation, it can continuously block the spread of germs and ensure the safety of the treatment environment.
High-efficiency filtration can also reduce the growth of germs inside respiratory equipment. If the disposable breathing filter cannot effectively block the germs, the germs may enter the internal pipes of equipment such as ventilators, multiply in a humid environment, and then spread to patients or medical staff through the equipment again. High-efficiency filtration intercepts the germs in the disposable breathing filter to prevent them from contaminating the inside of the equipment, reducing the secondary contamination of the equipment caused by the growth of germs, reducing the difficulty of cleaning and disinfecting the equipment, and reducing the transmission carrier of germs from the source.
In addition, high-efficiency filtration is combined with the sealing design of the disposable breathing filter to further enhance the barrier effect. The connection between the disposable breathing filter and the breathing tube is carefully designed to ensure that the airflow can only enter and exit through the filter layer, and there will be no bypass flow. Even if the filtration efficiency is high, if there is a gap that allows unfiltered airflow to pass directly, it will lose its barrier effect. The high-efficiency filtration combined with good sealing requires that all airflow passing through the breathing circuit must be filtered to ensure that no germs can escape through the gaps, forming an all-round germ-blocking barrier.
