HEART FAILURE DIAGNOSTIC DEVICE
    8.
    发明申请

    公开(公告)号:US20220142507A1

    公开(公告)日:2022-05-12

    申请号:US17585199

    申请日:2022-01-26

    IPC分类号: A61B5/113 A61B5/00 A61B5/11

    摘要: A heart failure diagnostic device includes a piezoelectric sensor sheet having flexibility and configured to output a detection signal corresponding to an input vibration. A respiratory signal acquisition unit is configured to extract, as a respiratory signal, a signal of a vibration frequency caused by respiration from the detection signal detected by the piezoelectric sensor sheet. A power spectrum calculator is configured to obtain a power spectrum of a respiratory frequency band from the respiratory signal, and a signal corrector is configured to correct the detection signal such that in the power spectrum, a maximum value of a first-order frequency component of a respiratory waveform is not smaller than 1.5 times a maximum value of a second-order frequency component of the respiratory waveform to obtain the respiratory signal.