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. 2021 Mar 17;8:604392. doi: 10.3389/fmed.2021.604392

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Copyright © 2021 Li, Li, Ge, Du, Li, Li, Zhang, Tan, Zhang, Yuan, Zhang, Zhang, Liu, Ding, Sun, Chen, Wang, Shen and Lu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Aerosol-collecting device and process. (A) Project flowchart. (B) Structure of the swirling aerosol collector and two modes of application: lab test mode with pump suction at the outlet and POC clinical testing mode with a disposable expiration tube at the inlet for collecting breath. (C) Simulated flow field demonstration using a mass flow diagram for the Lab test mode, where the inlet and outlet pressures were set to atmospheric and vacuum pressures, respectively. (D) Simulated flow field demonstration using a mass flow diagram for the POC testing mode where the mass flow rate at the inlet was set to 10 L/min. (E) Cartoon of the POC clinical testing model where instant aerosol sampling from the whole airway is demonstrated. SAC, swirling aerosol collector; Lab, laboratory evaluation; POC, point of care.