Title:
BIOLOGICAL SIGNAL MEASUREMENT DEVICE, METHOD, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/068313
Kind Code:
A1
Abstract:
The present invention suppresses motion artifacts with a small calculation amount and enhances temporal accuracy and amplitude accuracy of biological signal measurement. DC artifacts mixed in optical transmitting and receiving units (4201-4203) are corrected by a differentiator, comparator, and DC subtractor of a DC signal extracting unit (4204). AC artifacts are corrected by a motion measurement unit (4207) signal, a temporal difference correction unit of a pulse wave signal processing unit (4206), and a correction coefficient generation unit. Biological signals of a DC component and AC component included in a living body are processed by a ΔtHb processing unit (4205) and pulse wave amplitude processing unit (3502) and are made available. Generation of artifacts is suppressed by a stress transferring unit with suppressed stress to a blood vessel.
Inventors:
TANAKA AKIO (JP)
Application Number:
PCT/JP2022/039010
Publication Date:
April 27, 2023
Filing Date:
October 19, 2022
Export Citation:
Assignee:
TANAKA AKIO (JP)
International Classes:
A61B5/02; A61B5/0245; A61B5/026; A61B5/11; A61B5/1455
Foreign References:
| JP2018519889A | 2018-07-26 | |||
| US7738935B1 | 2010-06-15 | |||
| JP2019170538A | 2019-10-10 | |||
| JPH10211172A | 1998-08-11 | |||
| US6261236B1 | 2001-07-17 | |||
| JP2022139051A | 2022-09-26 | |||
| JP2022059660A | 2022-04-14 |
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