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Biological information measurement apparatus and biological information measurement method

A technology of biological information and measuring devices, which is applied in the field of measuring biological information, and can solve problems such as the inability to obtain arteriosclerosis with high precision

Inactive Publication Date: 2017-09-12
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In Patent Documents 1 and 2, when the pulse waveform is separated into a forward wave and a reflected wave, a blood flow waveform estimated by combining a plurality of virtual blood flow waveforms (Patent Document 1), or a fitting function (Patent Document 1) is used. 2), however, these are not physical quantities directly measured from the subject, so the degree of arteriosclerosis cannot be obtained with high accuracy

Method used

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  • Biological information measurement apparatus and biological information measurement method
  • Biological information measurement apparatus and biological information measurement method
  • Biological information measurement apparatus and biological information measurement method

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no. 1 approach

[0046] figure 1 It is a diagram showing a state where the living body information measurement device 1 according to the first embodiment of the present invention is attached to the wrist of the subject 100 . also, figure 2 It is a front view of the living body information measurement device 1 . image 3 It is a rear view of the living body information measuring device 1 . The biological information measurement device 1 is a measurement device for non-invasively measuring biological information of a subject 100 (living body). For example figure 1 As shown, the biological information measurement device 1 is a wristwatch-type wearable device mounted on the wrist of the subject 100 . For example, the biological information measuring device 1 is an optical sphygmomanometer, and as biological information, in addition to the degree of arteriosclerosis (the degree of stiffness of blood vessels), pulse wave velocity and blood pressure can be measured.

[0047] Such as figure 2 ...

no. 2 approach

[0103] Figure 9 It is a block diagram showing the internal configuration of the living body information measurement device 2 according to the second embodiment of the present invention. In this embodiment, the symbols used in the first embodiment are assigned to the same components as those in the first embodiment, and description thereof will be appropriately omitted. In the living body information measuring device 2 according to the second embodiment, the method of obtaining "the temporal change of the blood vessel cross-sectional area A" is different from the method described in the first embodiment. Furthermore, in the living body information measurement device 2 according to the second embodiment, the volume pulse wave can be measured as the living body information of the subject 100 . As for other parts other than the above two points, it is the same as the living body information measurement device 1 according to the first embodiment. Figure 9 shown in the living bo...

no. 3 approach

[0126] Figure 13 It is a block diagram showing the internal configuration of the living body information measurement device 3 according to the third embodiment of the present invention. In the present embodiment, the same components as those in the first embodiment are given the symbols used in the first embodiment, and descriptions thereof are appropriately omitted. The living body information measurement device 3 according to the third embodiment measures the living body information of the subject 100 using LED (Light Emitting Diode: Light Emitting Diode) light instead of laser light. exist Figure 13 shown in the biological information measuring device 3, and Figure 4 The illustrated living body information measurement device 1 differs in the irradiation control unit 412 , the optical sensor 52 (LED light emitting unit 512 and LED light receiving unit 522 ), the received light signal S2 , and the computing unit 424 .

[0127] The irradiation control unit 412 controls t...

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Abstract

The invention relates to a biological information measurement apparatus and a biological information measurement method, which can nondestructively and precisely measure the arterial stiffness without pressurization. A biological information measurement apparatus includes an irradiation unit configured to irradiate a living body with light or sound waves as measurement waves; a detection unit configured to detect measurement waves having passed through the inside of the living body; and a computational unit configured to obtain a change over time in blood flow rate and a change over time in blood vessel cross-sectional area based on a detection result from the detection unit, to divide a waveform, into a waveform for a progressive-wave component and a waveform for a reflected-wave component using the change over time in blood flow rate or the change over time in blood vessel cross-sectional area, and to obtain the degree of sclerosis of a blood vessel from the waveform for a progressive-wave component and the waveform for a reflected-wave component.

Description

technical field [0001] The present invention relates to techniques for measuring biological information. Background technique [0002] For example, in Patent Document 1, it is described that a pulse waveform detected in a state in which a measurement site is pressed is separated into an ejection wave and a reflected wave using a blood flow waveform estimated by combining a plurality of virtual blood flow waveforms, The degree of arteriosclerosis is calculated based on the relationship between the ejection wave and the reflected wave. In addition, Patent Document 2 describes that a pulse waveform detected from a living body is separated into incident waves and reflected waves using a fitting function, and arteriosclerosis is evaluated based on the difference or ratio of the amplitude strengths of the incident waves and reflected waves. Spend. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 5573550 [0006] Patent Do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/026A61B5/02A61B8/02A61B8/06
CPCA61B5/0075A61B5/02007A61B5/0261A61B8/02A61B8/06A61B8/0891A61B5/0002A61B5/02125A61B5/681A61B5/7257A61B8/04A61B8/4227A61B8/4427A61B5/0059A61B5/026A61B5/6824
Inventor 町田雄太沢渡彩映
Owner SEIKO EPSON CORP
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