Pulse wave measuring device capable of acquirinb optimal pressing force of pressure sensor

Abstract

A pulse wave measuring apparatus extracts a direct current component from a pressure value obtained from a sensor pressure (S113), and defines the pressurization force of the cuff as the optimum pressurization force when that direct current component is stable. Following determination of the optimum pressurization force, the pulse wave measuring apparatus monitors whether the direct current component obtained from the pressure sensor is optimum or not (S119), and adjusts the pressure (S117), when not By determining the rising sharpness of the peak and waveform distortion in the sphygmographic waveform (S121, S123), determination is made whether the pressurization force of the cuff is appropriate or not to carry out further adjustment of pressure (S117), as necessary.

Description

technical field [0001] The present invention relates to a pulse wave measuring device and a control program product of the pulse wave measuring device, in particular to a pulse wave measuring device and a control program product of the pulse wave measuring device capable of obtaining an optimum pressing force of a pressure sensor. Background technique [0002] In a pulse wave measurement device that detects a pulse wave, the pressure for pressing the pressure sensor against a measurement site of a subject is an important parameter. [0003] A method of obtaining the optimum pressure is disclosed in, for example, Japanese Patent No. 2798682 . [0004] However, when the existing pulse wave measurement device seeks the most appropriate pressure, it must have the function of separating each pulse wave from the voltage signal obtained by the pressure sensor, so the calculation process is complicated, and it is difficult to realize the function of the device. The problem of minia...

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Problems solved by technology

[0004] However, when the existing pulse wave measurement device seeks the most appropriate pressure, it must have the function of separating each pulse wave from the voltage signal obtained by the pressure sensor, so the calculation process is complicated, and it is difficult to realize the function of the device. miniaturization problem

[0005] In addition, in the pulse wave measurement device disclosed in Japanese Patent No. 2798682, when changing the pressing force, attention is paid to the change of the lowest blood pressure portion of the pulse wave, so there is a problem that the waveform deformation of the highest blood pressure portion is not considered.

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