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Method for measuring arterial blood pressure by using pulse wave and apparatus thereof

An arterial blood pressure and arterial technology, applied in vascular assessment, cardiac catheterization, etc., can solve problems such as clinical difficulties, unstable blood pressure values, and inaccurate results

Inactive Publication Date: 2003-11-19
北京新兴生物医学工程研究发展中心
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] 4. The regression coefficient between PWTV (or PWTT) and blood pressure cannot use a unified regression coefficient to measure everyone's blood pressure. Whether the regression coefficient of each person can be found is the key to whether this principle can be used to measure arterial blood pressure
[0015] 5. In the past, in order to find the regression coefficient of a certain person, people used the method of injecting blood pressure lowering drugs, stimulating the vagus nerve, lower limb negative pressure method and exercise boosting method, etc., but the common feature of the above methods is that they really changed the patient's Blood pressure; but it is not suitable for critically ill patients, and because these methods are regulated by the normal physiology of the human body, the blood pressure value is not stable enough, and the measured results are not accurate enough
It is difficult to use this method in clinical

Method used

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  • Method for measuring arterial blood pressure by using pulse wave and apparatus thereof
  • Method for measuring arterial blood pressure by using pulse wave and apparatus thereof
  • Method for measuring arterial blood pressure by using pulse wave and apparatus thereof

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Embodiment Construction

[0033] The present invention will be described in detail below.

[0034] figure 1 A graph representing the relationship between PWTT and blood pressure (BP),

[0035] BP in the picture: blood pressure value

[0036] T: blood pressure value at the test point

[0037] PWTT T : Pulse transit time when blood pressure value BP=T

[0038] PWTT 0 : Pulse transit time when blood pressure value BP=0

[0039] The relationship in the graph can be written as a regression equation: BP ( PWTT ) = BP C - | ΔBP | | ΔPWTT | × PWTT - - - - ( 1 )

[0040] Here, the regression constant BP c is the BP value of PWTT at 0, ...

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Abstract

The present invention relates to a method for measuring arterial pressure by using pulse wave and its device. Its method is as follows: a. measuring arterial pressure value when the human palm is placed on the horizontal surface of the heart and pulse wave conduction time; b. using static fluid mechanics equation and distance of that the palm is departed from the horizontal surface of the heart to calculate the pulse wave conduction time when the human palm is placed on non-horizontal surface of the heart; c. using the above-metnioned calculated valve values to calculate the regression coefficient and constant of linear relation between arterial pressure and pulse wave conduction time; d. using the above-mentioned linear relation to measure pulse wave conduction time so as to obtain the blood pressure value of human body.

Description

field of invention [0001] The invention relates to a method and device for measuring arterial blood pressure by using pulse waves, in particular to a non-destructive arterial blood pressure measuring method and device capable of real-time measurement without disturbing the measurement object. Background technique [0002] At present, the most common non-invasive blood pressure measurement method is to use the sonic method invented by the Russian doctor Korotkoff in 1905. The method is that when the pressure in the inflatable cuff drops to just below the arterial systolic pressure, the stethoscope placed on the cuff can A sharp, high-frequency sound is heard; the sound disappears as the pressure in the cuff continues to drop below the diastolic pressure in the arterial vessel. The sound that can be heard during the pressure change in the cuff is called Korotkoff sound. Using the characteristics of this sound reflected in the systolic pressure and diastolic pressure, read the ...

Claims

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Application Information

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IPC IPC(8): A61B5/021
Inventor 俞梦孙吕沙里张春艳张洪成胡晓林
Owner 北京新兴生物医学工程研究发展中心
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