Pulmonary circulation blood pressure monitoring equipment based on body surface phonocardiogram and method for monitoring pulmonary circulation blood pressure by using equipment

A technique of pulmonary circulation and heart sound, applied in cardiac catheterization, vascular assessment, stethoscope, etc., it can solve problems such as high operator skill requirements and subjects with tricuspid regurgitation.

Inactive Publication Date: 2014-04-02
DALIAN UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

At present, the common non-invasive pulmonary circulation blood pressure measurement method is ultrasonic Doppler method, but it can only be used in the case of subjects with tricuspid regurgitation, and it requires high operator skills, and its application has relatively large limitations.

Method used

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  • Pulmonary circulation blood pressure monitoring equipment based on body surface phonocardiogram and method for monitoring pulmonary circulation blood pressure by using equipment
  • Pulmonary circulation blood pressure monitoring equipment based on body surface phonocardiogram and method for monitoring pulmonary circulation blood pressure by using equipment
  • Pulmonary circulation blood pressure monitoring equipment based on body surface phonocardiogram and method for monitoring pulmonary circulation blood pressure by using equipment

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Embodiment Construction

[0030] refer to image 3 The implementation of the present invention will be specifically described. In view of the fact that the present invention monitors the relative change trend of the pulmonary circulation blood pressure by measuring the heart sound characteristic parameters multiple times, no analysis conclusion can be given for the subject whose heart sound signal is collected for the first time. If the subject has completed multiple (including two) data collection 310 , then read in the previous data 320 and display the previous analysis conclusion 330 . The subject is in a resting state, in a supine position, collects heart sound signals for 3-5 minutes each time 340, extracts the valve closing time difference in each cardiac cycle as heart sound features 350, and saves these data 360 for future use. In order to eliminate the influence of various random factors, it is necessary to perform statistical average processing 370 on the characteristics of the heart sound. ...

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Abstract

The invention discloses a method and a device for monitoring the pulmonary circulation blood pressure based on body surface phonocardiogram signals. In monitoring, the mechanical closing time of cardiac valves is used as an input parameter; and the parameters are periodically detected, and the change trend of the pulmonary circulation blood pressure is calculated according to the change trend of the parameters, so the noninvasive pulmonary circulation blood pressure is realized. Because the physiological relationship of the mechanical closing time of cardiac valves and pulmonary circulation blood stream dynamics are utilized in the method, the relative change trend of the pulmonary circulation blood pressure can be monitored under an uncalibrated condition. The equipment for monitoring the pulmonary circulation blood pressure is noninvasive, easy to operate, and low in cost.

Description

technical field [0001] This project belongs to the field of medical devices and involves a non-invasive monitoring instrument for pulmonary blood pressure. It is a non-invasive monitoring of pulmonary circulation hemodynamics based on body surface heart sounds, especially using the valve closing time contained in body surface heart sound signals to monitor subjects. Pulmonary blood pressure, an instrument for continuous monitoring of pulmonary blood pressure in a non-invasive manner. Background technique [0002] Existing monitoring of pulmonary circulation blood pressure generally uses invasive right heart catheterization to measure pulmonary circulation blood pressure, which is a "post-event" detection method and is not suitable for early screening of pulmonary circulation hypertension. At present, the common non-invasive pulmonary circulation blood pressure measurement method is ultrasonic Doppler method, but it can only be used in the case of subjects with tricuspid regu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/021A61B7/04
Inventor 唐洪
Owner DALIAN UNIV OF TECH
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