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Vital signs parameter evaluation device based on volume pulsation wave detection

A volume pulse wave and vital sign technology, applied in catheters and other directions, can solve the problems of complex detection methods, high cost, and difficulty for users to understand the result analysis, and achieve the effect of fast detection and analysis, low cost, and easy treatment effect analysis.

Inactive Publication Date: 2009-02-04
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The above-mentioned patents have improved the traditional sub-health assessment method and have certain application prospects, but the detection method adopted is relatively complicated, the cost is high, the selected parameters are not completely acceptable to doctors, and the result analysis is not easy for users to understand

Method used

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  • Vital signs parameter evaluation device based on volume pulsation wave detection
  • Vital signs parameter evaluation device based on volume pulsation wave detection
  • Vital signs parameter evaluation device based on volume pulsation wave detection

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Embodiment 1

[0037] Such as figure 1 As shown, the hardware composition of this embodiment includes a finger clip-type photoplethysmography sensor, a volumetric pulse wave conditioning circuit, an A / D conversion circuit, an automatic gain controller, a communication circuit, a host computer system, and a power supply.

[0038] The signal of the finger-clip photoelectric volume pulse wave sensor is processed by the volume pulse wave conditioning circuit for power frequency interference, baseline drift, motion artifacts, noise preprocessing of sensor displacement, amplification, and isolation. The volume pulse wave signal is then processed by The A / D conversion circuit converts it into a digital signal, and then transmits it to the upper computer system for processing through an automatic gain controller and a communication circuit.

[0039] The software system signal processing flow of this embodiment is as follows figure 2 shown. Before signal collection, the name, gender, age and other...

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Abstract

The invention discloses a vital sign parameter evaluation device on the basis of volume pulse wave detection, comprising an input module, a volume pulse wave collecting module, a main control module and a display; the input module is used for inputting the basis information of the user such as height HT, weight WT, systolic pressure Ps, and diastolic pressure pd; the input module, the volume pulse wave collecting module and the display are connected with the main control module; the main control module comprises a volume pulse wave characteristic point extractor and a vital sign parameter calculator; the vital sign parameter calculator comprises a pulse blood-ejection prophase PEP calculator; the blood-ejection prophase can be gained directly by the calculation of the volume pulse; one signal of the volume pulse wave can realize the innovative detection of main vital sign parameter; the volume pulse wave is generally measured at the finger end and the requirement on the position of the sensor is not high; furthermore, the detection and analysis speed is quick, the cost is low, the repeatability is good, and the stability is high.

Description

technical field [0001] The invention relates to the technical field of vital sign parameter evaluation, in particular to the field of non-invasive quantitative evaluation of human vital sign parameters. Background technique [0002] At present, the measurement of systolic time interval (STI) is a non-invasive examination method to measure the various phases of ventricular systole and evaluate the left ventricular function. The results are consistent with the hemodynamic changes measured directly, and have the advantages of simplicity, good repeatability, and quantification, and have been widely used clinically in recent years. At present, the most commonly used determination method is the synchronous tracing of electrocardiogram, phonocardiogram and carotid pulse. The disadvantage of this method is that it is more complicated, it needs to measure three signals simultaneously, and the requirements for the detection position are very strict, and the adaptability, stability an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02
Inventor 吴效明张攀登林绍杰李尚林
Owner SOUTH CHINA UNIV OF TECH
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