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Blood pressure measuring method and device based on heart sound signal

A blood pressure measurement device and blood pressure measurement technology, applied in cardiac catheterization, blood vessel assessment, etc., can solve problems such as enhanced artifacts, and achieve the effects of real-time monitoring, miniaturized blood pressure measurement, and long-term wear and use

Inactive Publication Date: 2004-12-08
THE CHINESE UNIVERSITY OF HONG KONG
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Problems solved by technology

However, this method is not suitable for continuous measurement during exercise, since the sensor can also detect other signals generated by the movement of the limbs, thereby enhancing the artifacts of the movement.

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  • Blood pressure measuring method and device based on heart sound signal
  • Blood pressure measuring method and device based on heart sound signal
  • Blood pressure measuring method and device based on heart sound signal

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Embodiment Construction

[0036] First refer to Figure 1 to Figure 7 The method described in the embodiment of the present invention is described in detail.

[0037] There is a certain relationship between the ECG signal and the trigger time of the heart beat. Moreover, there is a certain relationship between the heart sound signal and the completion time of the heartbeat. After the heart pumps blood, the blood starts to flow. After the pump is over, the blood is stopped by the heart valves from flowing back to the heart. The first heart sound is produced by the closure of the tricuspid and mitral valves. The second heart sound is produced by the pulmonary and aortic valves. They both stop blood from flowing from the body back to the heart.

[0038] The time difference between the ECG signal and the second heart sound signal contains blood pressure information. In high blood pressure, blood flow increases, and the pulmonary and aortic valves close faster than normal. As a result, there will be a...

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Abstract

A method based on cardiac sound signals for measuring blood pressure features that the electronic triggering time of human heart and the mechanical closing time of cardiac valve, which are based on some points on cardiac sound signal, are used to measure the blood pressure by linear regression method. Its equipment is an air bag type non-destructive blood pressure measurer.

Description

technical field [0001] The present invention generally relates to the measurement of blood pressure, in particular to such a method and device, which calculates the patient's systolic blood pressure, mean blood pressure, and diastolic blood pressure by using the pulse transmission time between the top of the electrocardiogram signal and the top of the next heart sound signal, thereby A new method and device for continuous measurement of blood pressure in a non-invasive manner are presented. technical background [0002] Existing blood pressure measuring instruments can be divided into two categories: a) invasive sphygmomanometers that directly measure blood pressure with an indwelling arterial catheter; b) non-invasive sphygmomanometers that measure blood pressure indirectly count. The former is dangerous to the patient because it may cause infection and external bleeding. Although the latter is slightly less accurate than the former, it can bring safety, comfort and conve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/021
Inventor 张元亭叶龙沈祖尧
Owner THE CHINESE UNIVERSITY OF HONG KONG