Design of an air isolation and purification (AIP) de5skfor medical use and characterization of its efficacy in ambient air isolation and purification
| Autor: | Yubing Guo, Shicong He, Mei Wang, Tiantian Liu, Xiaotang Hao, Rong Zhou |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Microbiology (medical)
Isolation (health care) Airflow education Smoke particulate Article lcsh:Infectious and parasitic diseases Nosocomial infection Airborne pathogen HEPA lcsh:RC109-216 Air purification Desk AIP desk Waste management lcsh:Public aspects of medicine Air isolation Public Health Environmental and Occupational Health lcsh:RA1-1270 HAdV-5 Staphylococcus albus S. albus humanities Ambient air Infectious Diseases Room air distribution Environmental science Biotechnology |
| Zdroj: | Biosafety and Health Biosafety and Health, Vol 2, Iss 3, Pp 169-176 (2020) |
| ISSN: | 2590-0536 |
| Popis: | The incidences of nosocomial infections (NIs) are increasing throughout the world, especially for those airborne diseases caused by pathogens or air particulates that float in air. In this study, we designed and manufactured a desk for clinic consultation room air purification and air isolation between doctor and patient. The air isolation and purification (AIP) desk has a high efficiency particulate air (HEPA) filter on the tope and several primary efficiency filters on the sides for air purification. The air circulating between inlet and outlet forms a wind-curtain between doctor and patient. The Computational Fluid Dynamics (CFD) model was used to calculate the speed of the air flow and the angle of sampler. We tested the air purification function of the AIP desk in rooms sized about 3.6 × 2.8 × 2.8 m (L × W × H) and found that the AIP desk could significantly remove the tested air pollutants like smoke particulates and microorganisms like Staphylococcus albus (S. albus)and human adenovirus type 5 (HAdV-5). The wind-curtain can significantly block the exhale air of patient being transmitted to the respiratory area of doctor setting in the opposite of AIP desk. Thus, the AIP desk can be used in hospital setting to reduce the risk of NIs and protect both doctors and patients. Highlights • Scientific question: Nosocomial infections (NIs) have always been an issue impacting public health. As far as COVID-19 epidemic in 2020 is concerned, there are 1716 medical staff confirmed infected and at least 60 medical staff died in China. NIs are attracting more and more attention, but there have been no effective ways to prevent or reduce it. • Evidence before this study: Currently, disinfection of clinic rooms depends only on additional air purifiers or ultraviolet lamps, which is not only expensive and but also achieve only static disinfection. • New findings: We designed and manufactured an air isolation and purification desk (AIP desk) that integrates all the air isolation, filtration and purification functions into one equipment. Test results indicated that this desk can effectively reduce and remove particulate matter and pathogens in ambient air. The air circulating between inlet and outlet of AIP desk formed a wind-curtain that isolates patient's exhale air from doctor's respiratory area. • Significance of this study: The AIP desk can significantly reduce the risk of cross infection in the hospital, and thus effectively protecting patients and medical staff. |
| Databáze: | OpenAIRE |
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