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Nonlinear fetal heart rate surveillance instrument

A fetal heart rate, non-linear technology, applied in the measurement of pulse rate/heart rate, diagnostic recording/measurement, medical science, etc., can solve the problem of no objective standard

Inactive Publication Date: 2007-11-14
NORTHEAST NORMAL UNIVERSITY
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Problems solved by technology

In the past, what kind of fetal heart rate record curve indicates that the fetus (including newborns after delivery) is healthy or hypoxic or close to death, doctors can only judge by experience, there is no uniform objective standard

Method used

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  • Nonlinear fetal heart rate surveillance instrument
  • Nonlinear fetal heart rate surveillance instrument
  • Nonlinear fetal heart rate surveillance instrument

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Experimental program
Comparison scheme
Effect test

Embodiment

[0047] The present invention is made up of four parts:

[0048] ①Ultrasonic Doppler sensor;

[0049] ② Fetal heart rate signal extractor composed of analog circuit and digital circuit;

[0050] ③ The fetal heart rate signal extractor is connected with the PC6360 analog / digital interface card to complete the analog / digital conversion of the fetal heart rate signal;

[0051] ④ Nonlinear computer analysis processor;

[0052] Further describe the present invention below in conjunction with accompanying drawing, described fetal heart sound signal is collected by ultrasonic Doppler probe, what is connected subsequently is by resistor R 1 , Capacitor C 1 And the cable follower composed of the operational amplifier μA741 (as shown in Figure 2), in which the resistor R 1 A variable resistor can be used, which is connected to pin 6 of the operational amplifier μA741 of the cable follower by the resistor R 2 , R 3 , R 4 , R 5 Amplifying circuit composed of operational amplifier μ...

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PUM

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Abstract

A non-linear fetal heart rhythm monitor is disclosed. Its monitoring method includes such steps as taking the cardiac sound signals of fetus by ultrasonic Doppler sensor, extracting the envelope of audio signals, transmitting it to A / D interface card PC6360, A / D conversion, and transmitting the converted result to computer aided non-linear analyzing processor which has man-machine interaction interface and the working interface and analyzing software of non-linear kinetic analysis software package.

Description

technical field [0001] The invention belongs to the technical field of medical care and relates to a health care monitoring instrument; the international patent classification number: A61B5 / 024. Background technique [0002] The change of fetal heart rate can reflect the different health conditions of the fetus in the mother's body, and various diseases of the fetus can be diagnosed by detecting the fetal heart rate. That is to say, the fetal heart rate signal carries abundant information indicating the health status of the fetus. In traditional medical testing, doctors use traditional fetal heart rate monitors to record the fetal heart rate on a paper tape. Doctors use years of clinical experience to diagnose fetal diseases and fetal health. Due to individual differences among doctors, there is no uniform objective standard for diagnosis. [0003] The inventor adopts nonlinear dynamics method to study the growth and development of the fetus and the relationship between th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/024A61B5/0444A61B5/344
Inventor 肖青刘玉萍刘春霞高思莉邱红梅张亮徐明奇王立媛
Owner NORTHEAST NORMAL UNIVERSITY
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