CN102973265A - Fetal electrocardiogram orthorhombic lead system - Google Patents
Fetal electrocardiogram orthorhombic lead system Download PDFInfo
- Publication number
- CN102973265A CN102973265A CN2012105220437A CN201210522043A CN102973265A CN 102973265 A CN102973265 A CN 102973265A CN 2012105220437 A CN2012105220437 A CN 2012105220437A CN 201210522043 A CN201210522043 A CN 201210522043A CN 102973265 A CN102973265 A CN 102973265A
- Authority
- CN
- China
- Prior art keywords
- circuit
- electrode
- capacitor
- differential amplifier
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The invention discloses a fetal electrocardiogram orthorhombic lead system, which comprises a chest lead electrode V1, three abdomen lead electrodes P1, P2 and P3, a public common terminal electrode COM and a grounding electrode GND, wherein the abdomen lead electrodes P1, P2 and P3 are arranged at an uterine orifice; the common public terminal electrode COM is arranged at the bottom of a uterus; and the grounding electrode GND is arranged a lowermost rib below a right armpit middle line. Due to the adoption of the orthorhombic lead system, clean fetal electrocardiosignals are obtained; and an orthorhombic lead plane is utilized, so that interference is reduced greatly, and the detectable rate of fetal electrocardiograms is increased.
Description
Technical field
The present invention relates to medical science electrocardiogram field, be specifically related to a kind of fetal electrocardiogram orthogonal lead system.
Background technology
Fetal electrocardiogram be the heart of fetus action potential that records through pregnant female stomach wall or fetus body surface and in heart the figure of conductive process.Carried abundant heart of fetus action message in the fetal electrocardiogram, therefrom except detecting the fetal heart frequency, can also detect because physiological and pathological is former thereby the variation of the ecg wave form that causes.Conduct to the parent body surface because the Fetal ECG signal is the many tissues by amniotic fluid and parent, thus signal a little less than, be about 1/10 of parent, add the myoelectricity of parent and the interference in space, detect relatively difficulty.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of fetal electrocardiogram orthogonal lead system, use the orthogonal lead system, thereby get access to comparatively clean Fetal ECG signal, and utilize the plane of leading of quadrature, and greatly reduced interference, improved the recall rate of fetal electrocardiogram.
The present invention is by the following technical solutions:
A kind of fetal electrocardiogram orthogonal lead system wherein, comprises chest crosslinking electrode V1, three abdominal part crosslinking electrode P1, P2, P3 that are arranged on mouth position, palace, common port electrode COM and a ground electrode GND who is arranged on position at the bottom of the palace; Described ground electrode GND is arranged under the right midaxillary line on the nethermost rib.
As preferably, the signal acquisition processing circuit of described abdominal part crosslinking electrode P1 comprises pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit; Described abdominal part crosslinking electrode P1 and ground electrode GND enter the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
As preferably, the signal acquisition processing circuit of described abdominal part crosslinking electrode P2 comprises pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit; Described abdominal part crosslinking electrode P2 and ground electrode GND enter the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
As preferably, the signal acquisition processing circuit of described abdominal part crosslinking electrode P3 comprises pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit; Described abdominal part crosslinking electrode P3 and ground electrode GND enter the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
As preferably, described filter circuit is common-mode filter.
As preferably, described difference pre-process circuit comprises resistance R 1-R4, capacitor C 1-C6; Abdominal part crosslinking electrode contact resistance R1, resistance R 1 connects respectively capacitor C 1, C3, and capacitor C 1 connects respectively capacitor C 2 and earth terminal, and capacitor C 2, C3 are connected with resistance R 2, and resistance R 2 connects ground electrode GND; Common port electrode COM connecting resistance R3, resistance R 3 meets respectively capacitor C 4, C6, and capacitor C 4 connects capacitor C 5 and earth terminal, and capacitor C 5, C6 be contact resistance R4 respectively, and resistance R 4 is connected with ground electrode GND.
The invention has the beneficial effects as follows:
The present invention application orthogonal lead system, the fetus signal of extraction is comparatively accurately clean, adopts the mode of differential amplification signal, reduces common mode disturbances, has greatly reduced the interference of parent signal to the fetus signal.
Description of drawings
Fig. 1 is crosslinking electrode position view of the present invention;
Fig. 2 is orthogonal lead sketch map of the present invention;
Fig. 3 is differential amplifier circuit schematic diagram of the present invention;
Fig. 4 is pre-process circuit schematic diagram of the present invention;
Fig. 5 is common-mode filter circuit theory diagrams of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing and example:
As shown in Figure 1, the present invention includes a chest crosslinking electrode V1, three abdominal part crosslinking electrode P1, P2, P3, a common port electrode COM and a ground electrode GND.The chest crosslinking electrode is placed on the position of standard lead V1, as the reference electrode that picks out Fetal ECG.Three abdominal part crosslinking electrode P1, P2, P3 are placed on mouth position, palace, are used for gathering the mixing electrocardiosignal of parent and fetus.A common port electrode COM is placed on position at the bottom of the palace, as the common port of chest and abdominal part crosslinking electrode.A ground electrode GND is placed under the right midaxillary line on the nethermost rib, as earth terminal.
As shown in Figure 2, abdominal part crosslinking electrode P1, P2, P3 position have one-component with respect to the parent heart at sagittal plane, and at coronalplane one-component are arranged with respect to the parent heart with reference to ground electrode GND, thereby have consisted of the orthogonal lead system.Acquired signal has just been avoided the interference of parent to the Fetal ECG signal like this.In addition, ground electrode GND is placed on right midaxillary line rather than from the left axil of parent cardiac position close to, also can reduces the parent electrocardiosignal to interference and the weakening of fetus signal.Experimental results show that this system of leading can extract more clear clean fetus signal and parent signal than conventional leads system really.
As shown in Figure 3, the present invention realizes taking multiplexed signal sampling and differential amplification mode, like this can the establishment common mode disturbances.In abdominal part three road signals a road as example, the signal that the reference electrode COM at the bottom of it and the palace collects carries out the difference pretreatment to GND simultaneously.After buffer, the input signal of high impedance converts low-impedance output signal to again, has improved the load capacity of circuit, in order to reduce the spatial noise signal to the impact of fetus signal.Then the two ends of two paths of signals input difference amplifier have just obtained the differential signal after the amplification, then use common-mode filter filtering common mode interfering signal, send at last the difference AD converter and carry out analog digital conversion.Thus, whole circuit all carries out with differential mode no matter be to amplify or filtering, and this has just improved the immunity to interference of circuit to noise greatly, can avoid the impact of circuit distributed constant simultaneously, in order to reduce spatial noise to the impact of Fetal ECG signal.
The signal acquisition processing circuit of abdominal part crosslinking electrode P1, P2, P3 includes pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit.Each abdominal part crosslinking electrode P1, P2, P3 enter respectively the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit with ground electrode GND, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
Figure 4 shows that difference pre-process circuit of the present invention, comprise resistance R 1-R4, capacitor C 1-C6, abdominal part crosslinking electrode contact resistance R1, resistance R 1 connects respectively capacitor C 1, C3, and capacitor C 1 connects respectively capacitor C 2 and earth terminal, capacitor C 2, C3 are connected with resistance R 2, and resistance R 2 connects ground electrode GND; Common port electrode COM connecting resistance R3, resistance R 3 meets respectively capacitor C 4, C6, and capacitor C 4 connects capacitor C 5 and earth terminal, and capacitor C 5, C6 be contact resistance R4 respectively, and resistance R 4 is connected with ground electrode GND.
As shown in Figure 5, this circuit is common mode filtering circuit, and effectively filtering common mode disturbs.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. fetal electrocardiogram orthogonal lead system is characterized in that: comprise chest crosslinking electrode V1, three abdominal part crosslinking electrode P1, P2, P3 that are arranged on mouth position, palace, common port electrode COM and a ground electrode GND who is arranged on position at the bottom of the palace; Described ground electrode GND is arranged under the right midaxillary line on the nethermost rib.
2. a kind of fetal electrocardiogram orthogonal lead according to claim 1 system, it is characterized in that: the signal acquisition processing circuit of described abdominal part crosslinking electrode P1 comprises pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit; Described abdominal part crosslinking electrode P1 and ground electrode GND enter the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
3. a kind of fetal electrocardiogram orthogonal lead according to claim 2 system, it is characterized in that: the signal acquisition processing circuit of described abdominal part crosslinking electrode P2 comprises pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit; Described abdominal part crosslinking electrode P2 and ground electrode GND enter the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
4. a kind of fetal electrocardiogram orthogonal lead according to claim 3 system, it is characterized in that: the signal acquisition processing circuit of described abdominal part crosslinking electrode P3 comprises pre-process circuit, buffer circuit, differential amplifier circuit, filter circuit and A/D convertor circuit; Described abdominal part crosslinking electrode P3 and ground electrode GND enter the anode of differential amplifier circuit successively through pre-process circuit, buffer circuit, common port electrode COM and ground electrode GND enter the negative terminal of differential amplifier circuit successively through pre-process circuit, buffer circuit, enter filter circuit and A/D convertor circuit after differential amplification is processed.
5. a kind of fetal electrocardiogram orthogonal lead according to claim 4 system, it is characterized in that: described filter circuit is common-mode filter.
6. a kind of fetal electrocardiogram orthogonal lead device according to claim 5, it is characterized in that: described difference pre-process circuit comprises resistance R 1-R4, capacitor C 1-C6; Abdominal part crosslinking electrode contact resistance R1, resistance R 1 connects respectively capacitor C 1, C3, and capacitor C 1 connects respectively capacitor C 2 and earth terminal, and capacitor C 2, C3 are connected with resistance R 2, and resistance R 2 connects ground electrode GND; Common port electrode COM connecting resistance R3, resistance R 3 meets respectively capacitor C 4, C6, and capacitor C 4 connects capacitor C 5 and earth terminal, and capacitor C 5, C6 be contact resistance R4 respectively, and resistance R 4 is connected with ground electrode GND.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105220437A CN102973265A (en) | 2012-12-07 | 2012-12-07 | Fetal electrocardiogram orthorhombic lead system |
| PCT/CN2013/088351 WO2014086260A1 (en) | 2012-12-07 | 2013-12-02 | Fetal electrocardiogram device based on orthogonal lead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105220437A CN102973265A (en) | 2012-12-07 | 2012-12-07 | Fetal electrocardiogram orthorhombic lead system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102973265A true CN102973265A (en) | 2013-03-20 |
Family
ID=47847821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105220437A Pending CN102973265A (en) | 2012-12-07 | 2012-12-07 | Fetal electrocardiogram orthorhombic lead system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102973265A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767701A (en) * | 2014-01-10 | 2014-05-07 | 中南民族大学 | Wearable fetal electrocardiogram monitoring system and method based on smart phones |
| WO2014086260A1 (en) * | 2012-12-07 | 2014-06-12 | 河南华南医电科技有限公司 | Fetal electrocardiogram device based on orthogonal lead |
| CN105455800A (en) * | 2015-12-24 | 2016-04-06 | 青岛光电医疗传感器有限公司 | Wearable device for monitoring adult heart rate and fetal heart rate simultaneously and method |
| CN107411736A (en) * | 2017-03-10 | 2017-12-01 | 孙彪 | Fetal ECG signal detection system |
| CN110604564A (en) * | 2019-09-16 | 2019-12-24 | 深圳市理邦精密仪器股份有限公司 | Electrode system, fetal electrocardiosignal acquisition and measurement method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988002616A1 (en) * | 1986-10-08 | 1988-04-21 | St. Mary's Hospital Medical School | Intrauterine probe |
| CN2782018Y (en) * | 2005-04-25 | 2006-05-24 | 河南华南医电科技有限公司 | Fetus ECG machine |
| CN201267468Y (en) * | 2008-08-28 | 2009-07-08 | 温州职业技术学院 | Portable cardiogram monitor |
| CN102551707A (en) * | 2012-02-13 | 2012-07-11 | 南京大学 | Method for placing electrodes when standard 12 lead electrocardiogram machine is used for detecting fetal electrocardiogram |
| CN202950653U (en) * | 2012-12-07 | 2013-05-29 | 河南华南医电科技有限公司 | Fetal electrocardiogram orthogonal lead device |
-
2012
- 2012-12-07 CN CN2012105220437A patent/CN102973265A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988002616A1 (en) * | 1986-10-08 | 1988-04-21 | St. Mary's Hospital Medical School | Intrauterine probe |
| CN2782018Y (en) * | 2005-04-25 | 2006-05-24 | 河南华南医电科技有限公司 | Fetus ECG machine |
| CN201267468Y (en) * | 2008-08-28 | 2009-07-08 | 温州职业技术学院 | Portable cardiogram monitor |
| CN102551707A (en) * | 2012-02-13 | 2012-07-11 | 南京大学 | Method for placing electrodes when standard 12 lead electrocardiogram machine is used for detecting fetal electrocardiogram |
| CN202950653U (en) * | 2012-12-07 | 2013-05-29 | 河南华南医电科技有限公司 | Fetal electrocardiogram orthogonal lead device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014086260A1 (en) * | 2012-12-07 | 2014-06-12 | 河南华南医电科技有限公司 | Fetal electrocardiogram device based on orthogonal lead |
| CN103767701A (en) * | 2014-01-10 | 2014-05-07 | 中南民族大学 | Wearable fetal electrocardiogram monitoring system and method based on smart phones |
| CN105455800A (en) * | 2015-12-24 | 2016-04-06 | 青岛光电医疗传感器有限公司 | Wearable device for monitoring adult heart rate and fetal heart rate simultaneously and method |
| CN107411736A (en) * | 2017-03-10 | 2017-12-01 | 孙彪 | Fetal ECG signal detection system |
| CN110604564A (en) * | 2019-09-16 | 2019-12-24 | 深圳市理邦精密仪器股份有限公司 | Electrode system, fetal electrocardiosignal acquisition and measurement method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102973265A (en) | Fetal electrocardiogram orthorhombic lead system | |
| CN104622460B (en) | A kind of ECG signal harvester | |
| CN104000575A (en) | Electrocardiosignal acquisition device | |
| CN104382583B (en) | A kind of 18 harvester leading electrocardiosignal and methods thereof | |
| CN203354539U (en) | Portable electrocardio multi-lead monitoring device | |
| CN105615869A (en) | 12-lead electrocardiograph signal acquisition device | |
| CN105054923A (en) | Electrocardiogram detection device | |
| CN104510461B (en) | Digital full isolation ecg signal acquiring denoising device and its method | |
| CN202950653U (en) | Fetal electrocardiogram orthogonal lead device | |
| CN104757964A (en) | Electrocardiosignal collection ultrahigh common-mode rejection circuit and electrocardiograph collection equipment | |
| CN103239222A (en) | Electrocardio signal acquisition device and method | |
| CN203138474U (en) | 18-lead ECG (electrocardiograph) workstation | |
| CN105266799A (en) | Electrocardiogram amplifier automatic gain control method based on blind separation technology | |
| CN103169467A (en) | Mobile phone with electrocardio data acquisition function and electrocardio data acquisition method | |
| CN202960507U (en) | Fetus electrocardiosignal processing circuit | |
| CN210541542U (en) | Twelve-lead wearable electrocardiogram monitoring garment | |
| CN108926348B (en) | A kind of extracting method and device of atrial fibrillation signal | |
| CN210433481U (en) | Wearable fetal electrocardiogram lead device | |
| CN203138476U (en) | Electrocardiogram signal processing device | |
| CN205338943U (en) | Wireless long -distance electrocardio monitoring system | |
| CN115192005A (en) | Portable electrocardiogram and seismogram combined acquisition system and data processing method | |
| CN204813872U (en) | Heart electric detection means | |
| CN204654930U (en) | The superelevation common mode rejection circuit of ecg signal acquiring and electrocardiogram acquisition equipment | |
| CN209499724U (en) | A kind of portable mobile wireless ECG monitoring device | |
| CN206183300U (en) | Fetus -voice meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130320 |