Apparatus and method for respiratory rate detection and early detection of blood loss volume
    4.
    发明授权
    Apparatus and method for respiratory rate detection and early detection of blood loss volume 有权
    用于呼吸频率检测和早期检测失血量的仪器和方法

    公开(公告)号:US09414753B2

    公开(公告)日:2016-08-16

    申请号:US13503075

    申请日:2010-10-20

    摘要: An apparatus and method for non-invasive monitoring and detection of sudden changes in cardiovascular hemodynamics, in which a PPG signal is obtained from a patient, a time-frequency spectrum (TFS) is computed from the PPG signal, instantaneous modulations at a plurality of time points defining a curve of a prominent frequency of oscillation are extracted from the TFS, a peak power spectral density sequence is computed using the instantaneous modulations, and instantaneous peak values for following prominent frequency oscillations are monitored.

    摘要翻译: 一种用于非侵入性监测和检测心血管血流动力学突然变化的装置和方法,其中从患者获得PPG信号,时间频谱(TFS)由PPG信号计算,多个时间频率 从TFS中提取定义突出振荡频率曲线的时间点,使用瞬时调制计算峰值功率谱密度序列,并监测以下显着频率振荡的瞬时峰值。