Pulse wave measuring device and vital wave analysing programe product
A measurement device and pulse wave technology, applied in diagnostic recording/measurement, medical science, sensors, etc., can solve problems such as inability to obtain post-systolic components, inability to obtain components, and changes in waveforms
Inactive Publication Date: 2004-10-20
OMRON HEALTHCARE CO LTD
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Problems solved by technology
[0005] However, since the conventional automatic blood pressure device disclosed in JP-A-7-39530 obtains the post-systolic component from the original waveform and the fourth-order differential wave, there are characteristic points of the fourth-order differential wave in the original waveform. If there are multiple and the feature point to be selected is not clear, or when the method for obtaining the post-systolic component is a method for a measurement site different from the measurement site of the corresponding waveform, the systole cannot be obtained. Post-period component
In addition, even when the pulse wave is measured at the same site, the pulse wave waveform changes due to differences in the timing or magnitude of reflected waves due to the hardness of the blood vessel wall, and the post-systolic component cannot be obtained.
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[0031] Embodiments of the present invention will be described below with reference to the drawings. In the following description, the same reference numerals are assigned to the same components and components, and their names and functions are also the same. Therefore, detailed descriptions of them will not be repeated.
[0032] Referring to FIG. 1 , the overall configuration of the pulse wave measuring device of this embodiment includes a pulse wave device 1 for detecting pulse waves and a control device 2 for controlling the whole pulse wave measuring device. The pulse wave device 1 and the control device 2 are connected via a dedicated cable such as a USB (Universal Serial Bus: Universal Serial Bus) cable or a communication line. Such connections also include non-contact connections such as wireless communication.
[0033] The control device 2 is provided with: a ROM (Read Only Memory: Read Only Memory) 24 and a RAM (Random Access Memory: Random Access Memory) 25 for stor...
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A pulse wave measuring apparatus obtains the N-th derivative of a measured pulse waveform. The pulse waveform is classified into waveforms alpha - delta in accordance with the presence / absence of a shoulder (inflection point) at a rising phase of a pulse waveform of one beat, and also in accordance with the presence / absence of a shoulder in a falling phase. In each classified waveform, each calculated characteristic point of the N-th derivative corresponds to a traveling wave or reflected wave. The pulse wave measuring apparatus can calculate an AI value or the like that is the characteristic value of a pulse wave using such characteristic points and calculation equation of each waveform.
Description
technical field [0001] The present invention relates to a pulse wave measurement device and a living body wave analysis program product, in particular to a pulse wave measurement device and a living body wave analysis program product capable of accurately calculating pre-systolic components and post-systolic components from original waveforms. Background technique [0002] The blood pressure is the pressure on the inner wall of the arterial vessel by the blood flow generated by the contraction and expansion of the heart, and consists of the systolic blood pressure corresponding to the systolic blood pressure of the heart and the diastolic blood pressure corresponding to the diastolic blood pressure of the heart. The pulse pressure wave generated by intra-arterial blood pressure is a composite wave of a pre-systolic component (progressive wave) generated by the expulsion of blood from the heart and a post-systolic component (reflected wave) mainly generated by reflection from ...
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IPC IPC(8): A61B5/0245A61B5/0225
CPCA61B5/7264A61B5/7239A61B5/02116A61B5/02255A61B5/02416
Inventor 佐藤博则北胁知己
Owner OMRON HEALTHCARE CO LTD