Daniel Morris,Desney S. Tan,T. Scott Saponas,Shwetak N. Patel,Nicolas Villar,Gregory R. Smith,Sidhant Gupta,Gabriel Adam Cohn,David C. Kale,Sailaja Malladi,Ronald E. Paulsen
申请号：
US14750646
公开号：
US20160287172A1
申请日:
2015.06.25
申请国别(地区):
US
年份:
2016
代理人:
摘要：
A wrist-worn device heart-monitoring device is presented. The wrist-worn heart-monitoring device includes a radial tonometer configured to output a pressure signal indicating a pulse pressure wave at a user's wrist, two or more electrodes configured to output an electrical signal indicating a user's heart has been commanded to contract, and a microphone configured to output an audio signal indicating a closing of a user's aortic valve. The wrist-worn heart-monitoring device further includes a pulse transit time monitor configured to calculate a pre-ejection period of the user's heart based on at least the pressure, electrical, and audio signals, and calculate a pulse transit time based on at least the pre-ejection period, the pressure signal, and the electrical signal.
