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Precision wearable accelerometer contact microphones for longitudinal monitoring of mechano-acoustic cardiopulmonary signals.
npj Digital Medicine ( IF 12.4 ) Pub Date : 2020-02-12 , DOI: 10.1038/s41746-020-0225-7 Pranav Gupta 1 , Mohammad J Moghimi 1 , Yaesuk Jeong 1 , Divya Gupta 2 , Omer T Inan 1 , Farrokh Ayazi 1
npj Digital Medicine ( IF 12.4 ) Pub Date : 2020-02-12 , DOI: 10.1038/s41746-020-0225-7 Pranav Gupta 1 , Mohammad J Moghimi 1 , Yaesuk Jeong 1 , Divya Gupta 2 , Omer T Inan 1 , Farrokh Ayazi 1
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Mechano-acoustic signals emanating from the heart and lungs contain valuable information about the cardiopulmonary system. Unobtrusive wearable sensors capable of monitoring these signals longitudinally can detect early pathological signatures and titrate care accordingly. Here, we present a wearable, hermetically-sealed high-precision vibration sensor that combines the characteristics of an accelerometer and a contact microphone to acquire wideband mechano-acoustic physiological signals, and enable simultaneous monitoring of multiple health factors associated with the cardiopulmonary system including heart and respiratory rate, heart sounds, lung sounds, and body motion and position of an individual. The encapsulated accelerometer contact microphone (ACM) utilizes nano-gap transducers to achieve extraordinary sensitivity in a wide bandwidth (DC-12 kHz) with high dynamic range. The sensors were used to obtain health factors of six control subjects with varying body mass index, and their feasibility in detection of weak mechano-acoustic signals such as pathological heart sounds and shallow breathing patterns is evaluated on patients with preexisting conditions.
中文翻译：
精密可穿戴加速度计接触式麦克风，用于纵向监测机械声心肺信号。
从心脏和肺部发出的机械声信号包含有关心肺系统的宝贵信息。能够纵向监测这些信号的不引人注目的可穿戴传感器可以检测早期病理特征并相应地调整护理。在这里，我们提出了一种可穿戴、密封的高精度振动传感器，它结合了加速度计和接触式麦克风的特性来获取宽带机械声生理信号，并能够同时监测与包括心脏在内的心肺系统相关的多个健康因素以及个体的呼吸频率、心音、肺音以及身体运动和位置。封装式加速度计接触式麦克风 (ACM) 利用纳米间隙传感器在宽带宽 (DC-12 kHz) 和高动态范围内实现非凡的灵敏度。这些传感器用于获取六名不同体重指数的对照受试者的健康因素，并在患有既往疾病的患者上评估其检测弱机械声信号（例如病理心音和浅呼吸模式）的可行性。
更新日期：2020-02-12
中文翻译：
精密可穿戴加速度计接触式麦克风，用于纵向监测机械声心肺信号。
从心脏和肺部发出的机械声信号包含有关心肺系统的宝贵信息。能够纵向监测这些信号的不引人注目的可穿戴传感器可以检测早期病理特征并相应地调整护理。在这里，我们提出了一种可穿戴、密封的高精度振动传感器，它结合了加速度计和接触式麦克风的特性来获取宽带机械声生理信号，并能够同时监测与包括心脏在内的心肺系统相关的多个健康因素以及个体的呼吸频率、心音、肺音以及身体运动和位置。封装式加速度计接触式麦克风 (ACM) 利用纳米间隙传感器在宽带宽 (DC-12 kHz) 和高动态范围内实现非凡的灵敏度。这些传感器用于获取六名不同体重指数的对照受试者的健康因素，并在患有既往疾病的患者上评估其检测弱机械声信号（例如病理心音和浅呼吸模式）的可行性。
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