Central arterial blood pressure measuring device

Abstract

The invention discloses a central arterial blood pressure measuring device. The central arterial blood pressure measuring device comprises a brachial arterial blood pressure measurement module, an electrocardiogram measurement module, a radial arterial blood pressure measurement module, a data processing module, a pulse wave conduction time evaluation module, a pulse wave reflection coefficient evaluation module, a central arterial pressure calculation module, a data display module and the like; the pulse wave conduction time evaluation module is used for solving pulse wave conduction time; the pulse wave reflection coefficient evaluation module divides pulse waves into incident waves and reflected waves, and calculates the ratio of the amplitude of the incident waves to the sum of the amplitudes of the incident waves and the reflected waves to obtain a pulse wave reflection coefficient; the central arterial pressure calculation module calibrates a brachial arterial blood pressure waveform; meanwhile, the pulse wave conduction time and the pulse wave reflection coefficient are input into a mathematical model to calculate a transfer function, and then the transfer function and the calibrated brachial arterial blood pressure waveform are utilized for calculating a central arterial pressure waveform. By means of the device, the measurement accuracy of the central arterial pressurecan be significantly improved, and the measurement error is reduced.

Description

technical field [0001] The invention relates to blood pressure detection, in particular to a device for realizing individualized non-invasive central aortic blood pressure measurement by using peripheral arteries, and belongs to the technical field of medical devices. Background technique [0002] Central arterial pressure refers to the blood pressure at the root of the ascending aorta. Its systolic pressure represents the afterload of the heart and is related to left ventricular hypertrophy. Its diastolic pressure is the perfusion pressure of the coronary arteries, which also affects the functions of important organs such as the brain, kidneys and lungs. Therefore, it is closely related to cardiovascular disease. In recent years, with the continuous improvement of non-invasive measurement technology of central arterial pressure, people have paid more attention to and deepened the research on central arterial pressure, and it has been gradually used in the clinical observati...

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Problems solved by technology

[0010] Aiming at the problem that the existing measurement devices cannot reflect the differences between patients and lead to large central arterial pressure measurement errors, the purpose of the present invention is to propose a new central arterial

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