Title:
DEVICE AND METHOD FOR MEASURING PULSE WAVE VELOCITY
Document Type and Number:
WIPO Patent Application WO/2020/071480
Kind Code:
A1
Abstract:
[Problem] To accurately detect a pulse wave velocity in one path in the same blood flow direction that includes the aorta, by means of a simple structure and by noninvasive means. [Solution] A piezoelectric vibration sensor 10A serves as a ballistocardiac wave sensor, and piezoelectric vibration sensor 10B serves as a pulse wave sensor. Ballistocardiac waves are a propagation of vibration from heart valve actuation through the medium of the skeleton or skeletal muscles, and are propagated at a higher velocity than pulse waves, and when compared with pulse waves, ballistocardiac waves can be considered to be propagated substantially instantaneously. This being the case, since the time that pulse waves leave the heart can be known from the ballistocardiac waves, the pulse wave velocity can be determined from the time that a pulse wave reaches the measurement site and the distance from the heart to the measurement site.
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Inventors:
KATSUDA SHINICHIRO (JP)
ISHIGURO TAKASHI (JP)
ISHIGURO TAKASHI (JP)
Application Number:
PCT/JP2019/039091
Publication Date:
April 09, 2020
Filing Date:
October 03, 2019
Export Citation:
Assignee:
UNIV FUKUSHIMA MEDICAL (JP)
TAIYO YUDEN KK (JP)
TAIYO YUDEN KK (JP)
International Classes:
A61B5/02
Foreign References:
| JP2016101504A | 2016-06-02 | |||
| JP2011050546A | 2011-03-17 | |||
| CN108186000A | 2018-06-22 |
Attorney, Agent or Firm:
KAJIHARA Yasutoshi (JP)
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