PHYSIOLOGICAL STATE-ANALYZING DEVICE AND COMPUTER PROGRAM

Title:

PHYSIOLOGICAL STATE-ANALYZING DEVICE AND COMPUTER PROGRAM

Document Type and Number:

WIPO Patent Application WO/2013/187243

Kind Code:

A1

Abstract:

Provided is a novel technology for analyzing physiological state. The second derivative of a trunk biosignal (aortic pulse wave) from the dorsal trunk is obtained. Using the waveform of said second derivative, a low frequency maximum amplitude waveform component that appears when the amplitude switches from decrease to increase during ventricular systole to diastole is specified for each cycle. Inflection points positioned on either side, before and after said maximum amplitude waveform component are specified. The physiological state is analyzed using information on each inflection point. The physiological state can be analyzed because the time phases of the two inflection points obtained from the reference shape of the second derivative waveform of the aortic pulse wave substantially coincide with the first heart sound and the second heart sound (or are equivalent to the R wave and T wave in an electrocardiogram) that represent cardiovascular system dynamics.

Inventors:

FUJITA ETSUNORI (JP)

Application Number:

PCT/JP2013/065097

Publication Date:

December 19, 2013

Filing Date:

May 30, 2013

Export Citation:

Click for automatic bibliography generation Help

Assignee:

DELTA TOOLING CO LTD (JP)

International Classes:

A61B5/0245; A61B5/0205; A61B5/18

Domestic Patent References:

WO2010021227A1	2010-02-25
WO2005000119A1	2005-01-06
WO2011052183A1	2011-05-05
WO2010021228A1	2010-02-25

Foreign References:

JP2007007075A	2007-01-18
JP2005312947A	2005-11-10
JP2001218746A	2001-08-14
JPH0751234A	1995-02-28
JPH10295656A	1998-11-10
JP2011167362A	2011-09-01
JP2010046236A	2010-03-04
JP2002331603A	2002-11-19
JP2003182427A	2003-07-03
JP2011043428A	2011-03-03

Other References: