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Biosignal measuring device and biosignal measuring method

A biosignal and measurement device technology, applied in diagnostic recording/measurement, medical science, diagnosis, etc., can solve problems such as impossible determination of measurement, significant changes, etc.

Active Publication Date: 2014-05-28
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, if the measurement is temporarily interrupted, it is often impossible to determine whether a significant change in the measured or calculated value or a deviation from the specified range results from a change in the target biosignal or a change in conditions such as the measurement location

Method used

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  • Biosignal measuring device and biosignal measuring method
  • Biosignal measuring device and biosignal measuring method
  • Biosignal measuring device and biosignal measuring method

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Embodiment Construction

[0014] The systolic blood pressure P can be estimated by, for example, Equation 1 below based on a hemodynamic model. Here, the pulse wave propagation velocity is c, the Young's modulus of the blood vessel wall is E0, the parameter related to the change in Young's modulus is a constant ζ, the diameter of the blood vessel is R, the thickness of the blood vessel wall is h, and the blood property is ρ.

[0015] Equation 1

[0016] P = 1 ζ ln ( c 2 ) - 1 ζ ln ( hE 0 2 R ρ ) = α ln ( c 2 ) + ...

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Abstract

The present invention provides a biosignal measuring device and a biosignal measuring method. The biosignal measuring device has a first information acquisition module, a second information acquisition module, a first calculation module, a second calculation module, a third calculation module, a heartbeat interval estimation module, a determination module, and an output module. The first information acquisition module acquires the pulse wave signal. The second information acquisition module acquires an electrocardiogram signal. The first calculation module calculates a pulse wave velocity based. The second calculation module determines a heartbeat interval. The third calculation module calculates a relationship between pulse wave velocity and the heartbeat interval. The heartbeat interval estimation module estimates an estimated heartbeat interval based on pulse wave velocity and calculated relationship. The determination module determines whether the position of the first and second information acquisition modules has changed based on the heartbeat interval and the estimated heartbeat interval. The output module outputs information.

Description

technical field [0001] Embodiments described herein generally relate to biosignal measurement devices and biosignal measurement methods. Background technique [0002] Generally, it is known that there is a correlation between the pulse wave propagation speed or time calculated from the pulse waveform measured at two points or the electrocardiogram waveform and blood pressure. Therefore, in order to maintain physical condition and health or post-diagnosis medical record observation, a method in which a sensor device attached to a subject's body measures pulse wave propagation velocity and continuously estimates blood pressure has been developed. [0003] Currently, biological signal measurement devices for measuring pulse waves and electrocardiogram signals are being miniaturized and wirelessly communicated. In the future, it is expected that a biological signal measurement device can be continuously worn by a subject in daily life, and that the biological signal measurement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/022A61B5/0285A61B5/0402
CPCA61B5/0285A61B5/0295A61B5/02108A61B5/316A61B5/318A61B5/346
Inventor 福家佐和铃木琢治仲山加奈子
Owner TDK CORPARATION
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