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Continuous blood pressure measuring device and self-calibration method

A blood pressure measurement device and blood pressure technology, which are applied in the directions of blood vessel evaluation and cardiac catheterization, can solve the problems of large measurement error and cannot be continuously measured, and achieve the effects of being conducive to implementation and application, simple equipment and convenient use.

Active Publication Date: 2021-06-22
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a continuous blood pressure measurement device and a self-calibration method to overcome the problem of large measurement errors in the later period caused by only one calibration in the traditional method and cannot be continuously measured

Method used

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  • Continuous blood pressure measuring device and self-calibration method
  • Continuous blood pressure measuring device and self-calibration method
  • Continuous blood pressure measuring device and self-calibration method

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Embodiment 1

[0037] This embodiment provides a continuous blood pressure measurement device, please refer to figure 1, the device includes: a blood pressure collection module 1 for collecting standard blood pressure values ​​and finger transmitted pulse wave signals, a pulse wave collection module 2 for collecting reflected pulse wave signals of the upper arm, and a microprocessor for processing the signals collected by each module. Processor module 3 , the blood pressure acquisition module 1 and the pulse wave acquisition module 2 are all connected to the microprocessor module 3 .

[0038] As an alternative implementation, see figure 2 , the blood pressure acquisition module 1 includes a micro-servo pressure control system 11 and a photoplethysmography detection device 12 .

[0039] Wherein, the micro servo pressure control system 11 includes a finger cuff 111, an air pump 112 and a pressure sensor 113, and the micro servo pressure control system 11 is used to control the air pump 112 t...

Embodiment 2

[0046] This embodiment provides a self-calibration method for a continuous blood pressure measurement device, please refer to image 3 , the method includes:

[0047] S1. In the same body position, establish a non-invasive continuous blood pressure calculation model in this body position based on at least two sets of collected pressure signals, at least two sets of transmitted finger pulse wave signals, and at least two sets of upper arm reflected pulse wave signals;

[0048] Specifically, at least two sets of blood pressure values ​​are obtained based on at least two sets of pressure signals and at least two sets of transmitted finger pulse wave signals, and a non-invasive continuous blood pressure calculation model is established based on at least two sets of blood pressure values ​​and at least two sets of upper arm reflected pulse wave signals;

[0049] Wherein, the method for obtaining the pressure signal is as follows: the micro-servo pressure control system 11 in the bl...

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Abstract

The invention relates to a continuous blood pressure measuring device and a self-calibration method. Pulse wave conduction time is calculated through pulse wave signals collected at the finger and the arm, and a blood pressure value is measured through a finger arterial blood pressure measuring module. A calculation model between the blood pressure and the pulse wave conduction time is constructed according to the pulse wave conduction time and the actually measured blood pressure, then the pulse wave conduction time is continuously collected, and the blood pressure value at the corresponding moment is calculated according to the calculation model. The blood pressure value is measured again through the blood pressure measuring module every one hour, meanwhile, the error between the actually-measured blood pressure and the blood pressure calculated according to the calculation model formula is calculated, if the error exceeds a set threshold value, the calculation model is calibrated again through the standard blood pressure, and blood pressure measurement is conducted through the updated calculation model; and continuous measurement and self-calibration of the blood pressure of the human body are realized. By adopting the continuous blood pressure measuring device and the self-calibration method provided by the invention, non-invasive, continuous, real-time and accurate blood pressure measurement can be realized.

Description

technical field [0001] The invention relates to the technical field of blood pressure measurement, in particular to a continuous blood pressure measurement device and a self-calibration method. Background technique [0002] Blood pressure is one of the most basic vital sign parameters and the most basic clinical monitoring element. Accurate measurement of human blood pressure is helpful for early screening and identification of hypertensive diseases, and is of great significance in cardiovascular diseases. During the implementation of emergency surgery, the patient's physiological condition is very easy to change. It is very important for the doctor to know the change of the patient's blood pressure in time for the successful implementation of the operation. Continuous monitoring of human blood pressure is also of great help in the assessment of sleep quality. When resting and sleeping, if symptoms of sleep apnea occur, it will also be accompanied by rapid fluctuations in ...

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Application Information

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IPC IPC(8): A61B5/021
CPCA61B5/02108A61B5/02141
Inventor 王慧泉王宗阁陈瑞娟赵喆
Owner TIANJIN POLYTECHNIC UNIV