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Method for calculating heart and vessel functional parameters based on blood pressure and pulses of four limbs

A cardiovascular and extremity blood pressure technology, applied in the field of biomechanics, can solve the problems of complex operation, gap between cardiovascular disease health checkup and family health care, and high cost of detection methods, and achieve the effect of low price, easy operation, and fast output

Active Publication Date: 2016-07-06
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] In addition, due to the greatly improved health awareness of modern people, the detection methods for the above-mentioned cardiac function are costly, complicated to operate, and only applicable to specialized medical institutions.

Method used

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  • Method for calculating heart and vessel functional parameters based on blood pressure and pulses of four limbs
  • Method for calculating heart and vessel functional parameters based on blood pressure and pulses of four limbs
  • Method for calculating heart and vessel functional parameters based on blood pressure and pulses of four limbs

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Embodiment Construction

[0097] The present invention will be further described below in conjunction with the following examples.

[0098] With reference to the schematic flow sheet of the present invention, the specific implementation steps are as follows:

[0099] Step 1: Input, collect, and save personal information and waveform data of extremity blood pressure.

[0100] Step 2: Waveform calibration, amplitude and period normalization, unifying the number of points collected in the waveform, obtaining a complete average waveform, calculating the average arterial pressure corresponding to the limbs, and extracting the feature points in the waveform.

[0101] Step 3. Calculate the relevant waveform parameters, the waveform factor k f , The propagation speed of pulse wave c(t) f , Pulse wave waveform parameter b f , Vessel radius parameter A(t) f , the first power coefficient λ(t) of blood flow change with time f , the second power coefficient ε(t) of blood flow with time f ;Set the physiologica...

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Abstract

The invention discloses a method for calculating heart and vessel functional parameters based on blood pressure and pulses of four limbs, and belongs to the technical field of biomechanics. The arterial blood pressure and pressure pulse waves of the four limbs are detected through a pulse wave sensor and a blood pressure sensor, and noninvasive synchronous detection on the heart function, the rete arteriosum hardenability and blood flow parameters of the heart and the vascular function is achieved. The method comprises the steps that blood pressure and pulse wave information of the brachial artery and ankle artery of the four limbs are firstly collected, a series of collected pulse waves are subjected to waveform averaging, and average waveforms of the brachial artery and ankle artery of the four limbs are obtained respectively. The relation between the pulse waves of the four limbs, a pressure gradient and blood flow is set up based on the waveform characteristic parameters acquired through waveform analysis and the nonlinear pulse wave theory, and then the heart and vessel functional parameters are calculated on the basis of the blood flow and four limb pulse and blood pressure data. According to the method, a frequent and noninvasive detecting means easy to operate, fast in output and low in price is provided for a heart and vessel system.

Description

technical field [0001] The invention belongs to biomechanics technology, relates to computer program, circuit design, etc., and can be used for non-invasive calculation of cardiovascular function parameters. Background technique [0002] Cardiovascular disease has become the primary disease that endangers the health of adults in the world and our country and causes death. However, the early clinical symptoms of cardiovascular disease are not obvious, and cardiovascular disease is not diagnosed until the complications worsen. At present, the diagnostic techniques of cardiovascular diseases are mainly divided into direct method and indirect method. The direct measurement method can provide high-precision, recordable continuous data, but the acquisition of these parameter data is obtained through invasive detection methods. This method not only has certain risks, but also affects the clinical level of doctors or medical equipment. Technology has high requirements. Indirect me...

Claims

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Application Information

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IPC IPC(8): A61B5/021A61B5/02
CPCA61B5/02007A61B5/02035A61B5/02108
Inventor 乔爱科宋晓瑞李高阳
Owner BEIJING UNIV OF TECH
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