Invention Application
- Patent Title: HEART FAILURE DIAGNOSTIC DEVICE
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Application No.: US17585199Application Date: 2022-01-26
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Publication No.: US20220142507A1Publication Date: 2022-05-12
- Inventor: Wataru TAKAHASHI , Masanori YAMAMOTO , Atsuki SHIMIZU , Mitsuyoshi KONDO , Jun Taguchi , Hidetsugu ASANOI , Yoshiki SAWA , Shigeru MIYAGAWA
- Applicant: Sumitomo Riko Company Limited , Osaka University
- Applicant Address: JP Komaki-shi; JP Osaka
- Assignee: Sumitomo Riko Company Limited,Osaka University
- Current Assignee: Sumitomo Riko Company Limited,Osaka University
- Current Assignee Address: JP Komaki-shi; JP Osaka
- Priority: JP2019-218304 20191202
- Main IPC: A61B5/113
- IPC: A61B5/113 ; A61B5/00 ; A61B5/11

Abstract:
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.
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