TY - JOUR
AU - Xu, Qinghao
AU - Fang, Yunsheng
AU - Jing, Qingshen
AU - Hu, Ning
AU - Lin, Ke
AU - Pan, Yifan
AU - Xu, Lin
AU - Gao, Haiqi
AU - Yuan, Ming
AU - Chu, Liang
AU - Ma, Yanwen
AU - Xie, Yannan
AU - Chen, Jun
AU - Wang, Lianhui
PY - 2021
DA - May
TI - A portable triboelectric spirometer for wireless pulmonary function monitoring
JO - Biosensors and Bioelectronics
VL - 187
DO - http://dx.doi.org/10.1016/j.bios.2021.113329
AB - Coronavirus disease 2019 (COVID-19) as a severe acute respiratory syndrome infection has spread rapidly across the world since its emergence in 2019 and drastically altered our way of life. Patients who have recovered from COVID-19 may still face persisting respiratory damage from the virus, necessitating long-term supervision after discharge to closely assess pulmonary function during rehabilitation. Therefore, developing portable spirometers for pulmonary function tests is of great significance for convenient home-based monitoring during recovery. Here, we propose a wireless, portable pulmonary function monitor for rehabilitation care after COVID-19. It is composed of a breath-to-electrical (BTE) sensor, a signal processing circuit, and a Bluetooth communication unit. The BTE sensor, with a compact size and light weight of 2.5 cm3 and 1.8 g respectively, is capable of converting respiratory biomechanical motions into considerable electrical signals. The output signal stability is greater than 93% under 35%–81% humidity, which allows for ideal expiration airflow sensing. Through a wireless communication circuit system, the signals can be received by a mobile terminal and processed into important physiological parameters, such as forced expiratory volume in 1 s (FEV1) and forced vital capacity (FVC). The FEV1/FVC ratio is then calculated to further evaluate pulmonary function of testers. Through these measurement methods, the acquired pulmonary function parameters are shown to exhibit high accuracy (&gt;97%) in comparison to a commercial spirometer. The practical design of the self-powered flow spirometer presents a low-cost and convenient method for pulmonary function monitoring during rehabilitation from COVID-19.
PB - Elsevier
UR - https://eprints.gla.ac.uk/307105/
KW - Coronavirus (COVID-19)
ER