Antiviral/antibacterial respiratory filters

Antiviral and antibacterial respiratory filters provide an easy way to ensure protection from cross-contamination which keeps both the patient and operator safe without compromising on system performance.

Two mouthpiece types, oval and round, guarantee the maximum ergonomics and the compatibility with any equipment connector.

• High viral and bacterial filtration efficiency (99.999%)
• Low resistance to airflow
• Minimal deadspace
• Suitable for both lung function and exercise testing
• Individually packaged in 50 pieces box

The use of filter during lung function and metabolic testing also reduce the amount of droplets aerosol dispersion in the air mitigating the contamination of the environment due to forced expirations and high ventilations required during testing. Preventing aerosol spreading is fundamental to minimize infection diseases transmission^1,2.

The resistance of the combined system necessary to perform the tests is inferior to those suggested by the ATS/ERS (1.5cmH2O/L/sec@14 L/sec)³ both during inhalation and exhalation.

Filters are tested by independent laboratories passing BFE and VFE test using Staphylococcus Aureus (*ATCC #6538) and Bacteriophage PHI X174 (dimension about 0.025 µm). According to current knowledge Coronavirus species, including COVID-19 have a particle size of 0.06-0.2 µm, which is significantly larger than the bacteriophages used in the effectiveness tests. However, at this point in time we have not conducted any specific tests against COVID-19 as the challenge organism.

Filters comply with latest ERS guidelines recommending to use the filters with minimum proven efficiency for high expiratory flow of 600 to 700 L/min².

¹ ERS COVID-19 resource centre (https://www.ersnet.org/the-society/news/novel-coronavirus-outbreak--update-and-information-for-healthcare-professionals); Novel Coronavirus (COVID-19): The ATS Response (https://www.thoracic.org/professionals/clinical-resources/disease-related-resources/novel-coronavirus.php)
²Recommendation from ERS Group 9.1 (Respiratory function technologists /Scientists) Lung function testing during COVID-19 pandemic and beyond (https://ers.app.box.com/s/zs1uu88wy51monr0ewd990itoz4tsn2h).
³“STANDARDISATION OF LUNG FUNCTION TESTING” Edited by V. Brusasco, R.Crapo and G. Viegi: Standardisation of spirometry, Eur Respir J 2005; 26: 319–338