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Dynamic detection method and detection device of peak expiratory flow meter

A detection device and dynamic detection technology, applied in the direction of respirators, medical devices, and other medical devices, can solve the problem of metal fatigue of elastic components, affecting measurement accuracy, and the detection method of peak expiratory flow rate without a peak expiratory flow meter Instrument and other problems, to achieve accurate test results, stable and reliable operation, and low production costs

Inactive Publication Date: 2019-01-11
THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The mechanical peak expiratory flow meter pushes the buoy to move through the expiratory pressure, and measures the peak expiratory flow rate according to the moving distance of the buoy. Its working principle is similar to a spring balance. In the process of daily use, the mechanical peak expiratory flow meter The elastic components in are prone to metal fatigue, which affects the accuracy of the measurement;
[0004] The impeller type (turbine) peak expiratory flow meter is proportional to the rotational speed of the rotating parts and the fluid velocity, so as to calculate the peak expiratory flow rate to complete the measurement of the peak expiratory flow rate, but due to the rotational inertia and bearing frictional moment and other factors, need to be compensated to calculate the required measurement accuracy, and because of this, factors such as rotational inertia and bearing friction moment are easily affected by environmental factors, and the compensation cannot be adjusted in time, which is very unfavorable for accurate measurement. Measuring peak expiratory flow;
[0005] It can be seen that whether it is a mechanical peak expiratory flow meter or an impeller (turbine) peak expiratory flow meter, it is necessary to calibrate the accuracy of the measuring instrument before daily use of peak expiratory flow measurement, otherwise it will not be possible to timely Knowing the actual condition of the patient, let alone adjusting the treatment plan or medication plan in time, the consequences are very serious
[0006] At present, there is no detection method and detection device specially used for detecting peak expiratory flow meter in China.

Method used

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  • Dynamic detection method and detection device of peak expiratory flow meter

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A dynamic detection method of a peak expiratory flow meter, comprising the following steps:

[0049] 1) simulate the exhalation step, perform three simulated exhalations by the peak expiratory flow meter detection device to be detected, obtain three analog measurement result waveforms and three detection airflow waveforms, including the following sub-steps:

[0050] 1.1) Preset the simulated exhalation step, and set the simulated exhalation mode of three flow rate time ratios through the control unit of the peak expiratory flow meter detection device, so as to realize the control of the dynamic gas supply device in the peak expiratory flow meter detection device Generate three detection airflows matching the simulated exhalation mode, and the generation interval between each detection airflow is preferably 2 seconds;

[0051] 1.2) In the step of obtaining feedback data, airtightly connect the air volume interface 11 of the dynamic air supply device of the peak expirator...

Embodiment 2

[0058] A kind of peak expiratory flow meter detection device, see Figure 1 to Figure 6 As shown, it includes a dynamic air supply device. The dynamic air supply device includes an air cylinder 1, an air volume interface 11 connected to the front end of the air cylinder 1, a piston 2 slidably installed in the air cylinder 1, and a piston drive mechanism that is connected to the piston 2 by transmission. The piston drive mechanism Including a servo motor 61 and a belt transmission mechanism, the rear end of the gas cylinder 1 is fixed with a guide tube 44; the middle of the rear end of the piston 2 is fixed with a polished rod 45, and the polished rod 45 is slidably inserted into the inner cavity of the guide tube 44, and the polished rod 45 The rear end passes through the guide tube 44 and extends to the outside of the guide tube 44; the guide tube 44 is slidably fitted with a drive tube 43, the rear end of the drive tube 43 is fixed on the rear end of the polished rod 45, and ...

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Abstract

The invention discloses a dynamic detection method and detection device of a peak expiratory flow meter, being characterized in that through the standardized simulated blowing of the peak expiratory flow meter to be detected, the set of air pressure values received by the set point in the piston is converted into the waveform of the simulated measurement result, and the waveform of the simulated measurement result is compared with the waveform of the detected airflow to determine whether the quality of the peak expiratory flow meter to be detected is qualified or not. The disclosed a dynamic detection method of a peak expiratory flow meter and a detection device thereof, are suitable for quality detection of all commonly used expiratory peak expiratory flow meters at present, and are convenient to use, accurate and reliable in detection result.

Description

technical field [0001] The invention relates to the technical field of peak expiratory flow meters, in particular to a dynamic detection method and detection device for peak expiratory flow meters. Background technique [0002] There are two main types of peak expiratory flow meters, mechanical peak expiratory flow meters and impeller (turbine) peak expiratory flow meters. [0003] The mechanical peak expiratory flow meter pushes the buoy to move through the expiratory pressure, and measures the peak expiratory flow rate according to the moving distance of the buoy. Its working principle is similar to a spring balance. In the process of daily use, the mechanical peak expiratory flow meter The elastic components in are prone to metal fatigue, which affects the accuracy of the measurement; [0004] The impeller type (turbine) peak expiratory flow meter is proportional to the rotational speed of the rotating parts and the fluid velocity, so as to calculate the peak expiratory ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/00
CPCA61M2205/3334A61M16/0003
Inventor 郑则广刘妮胡杰英谢叶青刘武根
Owner THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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