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Device and method for calibrating fetal heart simulator

A technology of a calibration device and a calibration method, which is applied in the field of medical equipment, can solve problems such as large differences in heart sound signals, and achieve the effect of reducing echoes

Pending Publication Date: 2022-04-12
广电计量检测集团股份有限公司 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fetal heart rate simulator is mainly used in the development, testing and use stages of fetal monitors or fetal heart rate monitors. It tests the main performance parameters of the monitor to evaluate the performance of the monitor. Therefore, the accuracy of the parameters of the fetal heart rate simulator seriously affects the fetus. Whether the quality of the monitor is good or not, the quality of the fetal heart rate simulator must be effectively guaranteed to provide technical support for the development and use of the fetal monitor; Finally, the frequency and amplitude of the control signal to control the vibration of the ultrasonic source or vibrating plate are not necessarily the same as the set parameters; in addition, the fetal heart rate simulator directly simulates the heartbeat vibration, which is different from the fetal heartbeat in the uterus. If the fetal heart rate simulator is not optimized according to the uterine environment, the heart sound signal sent by the fetal heart rate simulator will be quite different from the actual heart sound signal. Therefore, the fetal heart rate simulator needs to be calibrated
Generally, the ultrasound source of an ultrasound Doppler fetal heart rate instrument, that is, a fetal heart rate instrument or a fetal monitor, is calibrated in accordance with JJG 893-2007 "Verification Regulations for Ultrasound Sources of an Ultrasound Doppler Fetal Heart rate instrument". It is the standard for testing the fetal heart rate meter, but there is no mature system and method in the existing technical solutions to standardize the calibration of the fetal heart rate simulator

Method used

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  • Device and method for calibrating fetal heart simulator
  • Device and method for calibrating fetal heart simulator
  • Device and method for calibrating fetal heart simulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 1 to 4 The first embodiment shown is shown in the calibration device of the fetal heart symptometer, including the casing 1 provided with the first cavity 11, provided in the first cavity 11 and is used to collect the intrinsic core simulator 100 signal. The heart sound acquisition device 2 is electrically connected to the heart sound acquisition device 2.

[0042] The center tone acquisition device 2 includes a data processor 21, a collected tank 22 having a second cavity 24 and a pickup 23 connected to the acquisition case 22, the data processor 21 and the pickup 23, and the data analysis system 3 are electrically connected. Of course, it should be noted that the electrical connection in this embodiment may be a wired electrical connection, or a radio connection, which is not limited.

[0043] In this embodiment, an elastic thin film 241 is provided, and it is understood that the elastic film 241 is directly used as one of the side walls of the second cavit...

Embodiment 2

[0048] Such as Figure 5 The second embodiment shown in the fetal heart symptometer, the difference from the first embodiment is only that the casing 1 in the present embodiment is spherical, and the shape of the first cavity 11 is also spherical. Such a shape is more close to the true uterine shape to maximize the uterine environment.

Embodiment 3

[0050] Such as Image 6 The following steps showing the following steps in the following steps:

[0051] S1: Set the heart rate of the fetal heart simulator 100 to be tested, it is recorded as the calibration value f, and the fetal heart symptom 100 to be tested into the first cavity 11 of the box 1;

[0052] S2: The heart sound acquisition device 2 acquires the heart rate of the intric heart simulator 100, and converts to the electrical signal to the data analysis system 3;

[0053] S3: Data Analysis System 3 Calculates the measurement value BMP of the intrinsic simulator 100 to be tested by the electrical signal;

[0054] S4: Calculate the error value δ obtained by the measured value and the calibration value.

[0055] S5: Set the number of cycles, each cycle change the heart rate calibration value f of the intrinsic heart simulator 100 to be tested, repeat the step S2 value step S4 to obtain a plurality of error value δ corresponding to the plurality of heart rate calibration va...

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Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a portable fetal heart simulator calibration device and method.The device comprises a box provided with a first cavity, a heart sound collection device arranged in the first cavity and a data analysis system electrically connected with the heart sound collection device. According to the method, the fetal heart sound condition can be simulated to the maximum extent, so that the fetal heart simulator can be calibrated more accurately.

Description

Technical field [0001] The present invention belongs to the technical field of medical devices, and more particularly to a portable fetal heart analog calibration device and method. Background technique [0002] At present, my country's economy has changed from a rapid development stage to high quality development stage, and the requirements for product quality are increasing. The fetal monitor can monitor the heart sound signal of the parent fetus, providing accurate and reliable reference information for the development and growth of the fetus, and is clinically applied. Because the fetal monitor is inconvenient to directly use pregnant women directly as an experimental object during the research and development process, the fetal heart symptoms play an irreplaceable role in the development and quality control of the fetal monitor. The principle of the fetal heart symbol is mainly divided into two types: acquisition clinically real fetal heart sound signals, after the single-ch...

Claims

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Application Information

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IPC IPC(8): A61B5/024
Inventor 龙阳黄雨平唐浩然宋嘉涛贺米容
Owner 广电计量检测集团股份有限公司
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