阅读说明：本技术 电极系统、胎儿心电信号采集、测量方法及装置 (Electrode system, fetal electrocardiosignal acquisition and measurement method and device ) 是由 饶箭 谭娟鹃 马*** 陈德伟 于 2019-09-16 设计创作，主要内容包括：本发明公开了一种电极系统、胎儿心电信号采集、测量方法及装置,电极系统包括：至少一个配置在被测对象宫底水平切线以上的胸部区域的胸部电极；分别配置在被测对象腹部的上腹部区域、下腹部区域、右下腹部区域、左下腹区域且位于被测对象子宫轮廓线内的第一腹部电极、第二腹部电极,第三腹部电极、第四腹部电极；所述胸部电极和所述腹部电极分别通过导联线电连接到心电模块,所述心电模块从所述腹部电极和所述胸部电极接收电信号并进行信号处理后发送到监护设备。采用上述电极位置排布的电极系统,多个腹部电极分别对准被测对象母体对应胎儿心电信号传导最优良的位置,可以提高胎儿心电信号的检出成功率。(The invention discloses an electrode system, a fetal electrocardiosignal acquisition and measurement method and a device, wherein the electrode system comprises: at least one chest electrode configured in the chest area above the horizontal tangent of the uterine fundus of the tested object; a first abdomen electrode, a second abdomen electrode, a third abdomen electrode and a fourth abdomen electrode which are respectively arranged in the upper abdomen area, the lower abdomen area, the right lower abdomen area and the left lower abdomen area of the abdomen of the object and are positioned in the outline of the uterus of the object; the chest electrode and the abdomen electrode are respectively and electrically connected to a electrocardio module through lead wires, and the electrocardio module receives electric signals from the abdomen electrode and the chest electrode, processes the signals and sends the signals to monitoring equipment. By adopting the electrode system with the electrode position arrangement, the plurality of abdomen electrodes are respectively aligned to the position of the tested object matrix corresponding to the best fetal electrocardiosignal conduction, so that the detection success rate of the fetal electrocardiosignals can be improved.)

1. An electrode system, comprising;

at least one chest electrode configured in the chest area above the horizontal tangent of the uterine fundus of the tested object; a first abdomen electrode, a second abdomen electrode, a third abdomen electrode and a fourth abdomen electrode which are respectively arranged in the upper abdomen area, the lower abdomen area, the right lower abdomen area and the left lower abdomen area of the abdomen of the object and are positioned in the outline of the uterus of the object;

the chest electrode and the abdomen electrode are respectively and electrically connected to a electrocardio module through lead wires, and the electrocardio module receives electric signals from the abdomen electrode and the chest electrode, processes the signals and sends the signals to monitoring equipment.

2. The electrode system of claim 1, wherein the lead wire points in the direction of the location where the corresponding chest or abdomen electrode is placed.

3. The electrode system according to claim 1 or 2, wherein the first abdomen electrode and the second abdomen electrode are respectively arranged in regions located within a contour line of a uterus of the subject above and below an X-axis of a uterine coordinate system established with a navel of the subject as a center; the third abdomen electrode and the fourth abdomen electrode are respectively arranged in the second quadrant and the third quadrant of the uterus coordinate system and are positioned in the region of the uterus contour line of the measured object.

4. The electrode system of claim 3, further comprising a fifth abdominal electrode disposed within an area encompassed by a subject's uterine contour and a fourth quadrant of the uterine coordinate system.

5. The electrode system according to claim 4, wherein the third abdominal electrode and the fifth abdominal electrode are respectively disposed at an intersection of a bisector of the second and fourth quadrants of the uterine coordinate system and a uterine profile of the subject, and the fourth abdominal electrode is disposed at an intersection of a bisector of the third quadrant of the uterine coordinate system and a uterine profile of the subject.

6. The electrode system of claim 5, wherein the first belly electrode is disposed on a Y-axis positive half axis parallel to the fifth belly electrode and the second belly electrode is disposed on a Y-axis negative half axis parallel to the third belly electrode or the fourth belly electrode.

7. The electrode system of claim 1, wherein the chest electrode is configured at any one of V1-V6, wherein V1 is located between the fourth ribs at the right edge of the chest, V2 is located between the fourth ribs at the left edge of the sternum, V3 is located at the midpoint of V2 and V4, V4 is located at the intersection of the left clavicular midline and the fifth rib, V5 is located at the same horizontal line as V4 at the left anterior axillary line, and V6 is located at the same horizontal line as V4 at the left medial axillary line.

8. The electrode system of claim 1, wherein all of the plurality of abdomen electrodes of the electrode system are formed on one patch having a sticking or adsorbing structure.

9. A method for acquiring electrocardiosignals of a body surface fetus is characterized by comprising the following steps:

step a): randomly selecting two abdominal electrodes in an electrode system, establishing a plurality of abdominal electrode channels by taking one of the two abdominal electrodes as a reference electrode and the other abdominal electrode as a tested electrode, and respectively collecting maternal-fetal mixed electrocardiosignals; the electrode system comprises a first abdominal electrode, a second abdominal electrode, a third abdominal electrode and a fourth abdominal electrode which are respectively arranged in the upper abdominal region, the lower abdominal region, the right lower abdominal region and the left lower abdominal region of the abdomen of the tested object and positioned in the outline of the uterus of the tested object;

step b): selecting an abdominal electrode and a chest electrode in an electrode system to establish a chest electrode channel and collect maternal electrocardiosignals; wherein, the electrode system also comprises at least one chest electrode which is arranged in the chest area above the horizontal tangent of the uterine fundus of the tested object.

10. The method for acquiring fetal body surface electrocardiosignals according to claim 9, wherein in the step a), three abdominal electrode channels are established by taking the first abdominal electrode as a reference electrode and taking the second abdominal electrode, the third abdominal electrode and the fourth abdominal electrode as measured electrodes to respectively acquire maternal and fetal mixed electrocardiosignals.

11. The method for acquiring fetal body surface electrocardiosignals of claim 9, wherein in the step b), the second abdomen electrode is used as a reference electrode, any one of the chest electrode tested electrodes is used for establishing a chest electrode channel, and maternal electrocardiosignals are acquired.

12. The method for acquiring the body surface fetal electrocardiosignals according to any one of the claims 9, further comprising, after the step b):

and placing a fifth abdomen electrode of the electrode system on any position of the measured object as a right leg driving electrode so as to eliminate signals shared between the abdomen electrode and the chest electrode and connecting lines of the abdomen electrode and the chest electrode.

13. A method for measuring electrocardiosignals of a body surface fetus is characterized by comprising the following steps:

the method for acquiring the electrocardiosignals of the body surface fetus according to any one of claims 9 to 12, wherein the method is used for respectively acquiring maternal electrocardiosignals and mixed electrocardiosignals of the maternal fetus;

verifying the obtained maternal-fetal mixed electrocardiosignals according to the obtained maternal electrocardiosignals, and respectively determining a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignals;

separating the maternal and fetal electrocardiosignals from the maternal and fetal mixed electrocardiosignals according to the established maternal QRS wave band and the fetal QRS wave band;

and analyzing and calculating the separated maternal electrocardiosignals and the fetal electrocardiosignals to obtain the calculation results of the maternal heart rate and the fetal heart rate.

14. The method for measuring the electrocardiosignals of the fetus on the body surface according to claim 13, wherein the verifying the obtained mixed electrocardiosignals of the mother and the fetus according to the obtained maternal electrocardiosignals to respectively establish a maternal QRS wave band and a fetal QRS wave band in the mixed electrocardiosignals of the mother and the fetus comprises:

detecting a parent QRS wave band from the obtained parent electrocardiosignals;

detecting a maternal-fetal mixed QRS wave band from the acquired maternal-fetal mixed electrocardiosignals;

comparing the detected position of any one of the parent-child mixed QRS bands with the detected position of the parent QRS band; if the positions are the same, the QRS wave band is determined as the maternal QRS wave band, and if the positions are different, the QRS wave band is determined as the fetal QRS wave band.

15. A measuring device for electrocardiogram signals of a body surface fetus is characterized by comprising:

a body surface fetus electrocardiosignal data acquisition unit for acquiring a maternal electrocardiosignal and a maternal-fetal mixed electrocardiosignal by using the electrode system of any one of claims 1 to 8;

the maternal-fetal mixed electrocardiosignal checking unit is used for checking the acquired maternal-fetal mixed electrocardiosignals according to the acquired maternal electrocardiosignals and respectively establishing a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignals;

a maternal-fetal mixed electrocardiosignal separation unit which separates and obtains a maternal electrocardiosignal and a fetal electrocardiosignal from the maternal-fetal mixed electrocardiosignal according to the established maternal QRS wave band and the fetal QRS wave band;

and the heart rate result output unit is used for analyzing and calculating the separated maternal electrocardiosignals and the fetal electrocardiosignals to obtain the calculation results of the maternal heart rate and the fetal heart rate.

16. A monitoring device, comprising an electrode system, a display device, a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to implement the method for acquiring the electrocardiogram signals of the body surface fetus according to any one of claims 8 to 11 and the method for measuring the electrocardiogram signals of the body surface fetus according to any one of claims 12 to 13; the electrode system adopts the electrode system of any one of claims 1-8, and is used for acquiring maternal and maternal-fetal mixed electrocardiosignals; the display equipment is used for displaying the obtained calculation results of the maternal heart rate and the fetal heart rate.

17. A computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions for causing the computer to execute the method for acquiring a body surface fetal electrocardiosignal according to any one of claims 9 to 12 and the method for measuring a body surface fetal electrocardiosignal according to any one of claims 13 to 14.

Technical Field

The invention relates to the technical field of fetal electrocardiogram monitoring, in particular to an electrode system, a fetal electrocardiogram signal acquisition and measurement method and a fetal electrocardiogram signal acquisition and measurement device.

Background

A body surface fetal electrocardio technology is a technical means for monitoring the maternal heart rate and the fetal heart rate at the same time in a non-invasive way, an electrocardioelectrode is attached to the surface of a maternal body to obtain mixed electrocardiosignals of a mother and a fetus, then the mixed electrocardiosignals of the mother and the fetus are filtered, identified and separated to further obtain the electrocardiosignals of the mother and the fetus, and finally the electrocardiosignals of the mother and the fetus are respectively analyzed to obtain a waveform analysis result and a heart rate monitoring result.

The fetal electrocardiosignals are transmitted to the surface of the mother body through amniotic fluid and various tissues of the mother body and are mixed with the maternal electrocardiosignals, the fetal electrocardiosignals are weaker and are generally between 5uV and 50uV, and the amplitude and the form of the fetal electrocardiosignals are closely related to the gestational period, the body position, the impedance of the surface of the mother body and the like of the fetus; unlike adult electrocardiographic monitoring, body surface fetal electrocardiographic monitoring does not have a unified and standard electrode system, including the placement position and number of electrocardiographic electrodes and the setting of each electrocardiographic channel.

The success rate, the signal-to-noise ratio, the QRS form and the like of the fetal electrocardiosignals acquired by different body surface fetal electrocardio-electrode systems are different. The electrocardio-electrode of the existing electrode system is only built around the heart of the fetus, and the distance between the electrodes of the channels is too short, so that on one hand, the problem that the success rate of acquiring the electrocardio-signal of the fetus is low and even the effective electrocardio-signal of the fetus cannot be acquired exists; on the other hand, when the fetal electrocardiosignals are larger than the maternal electrocardiosignals, the maternal electrocardiosignals are identified as the fetal electrocardiosignals, the fetal electrocardiosignals are identified as the maternal electrocardiosignals, the problem that the identification of the maternal electrocardiosignals is reversed exists, and the situation may influence the judgment of a doctor and cause misdiagnosis of the doctor.

Disclosure of Invention

In view of this, the embodiment of the invention provides an electrode system, a method and a device for acquiring and measuring fetal electrocardiosignals, so as to solve the problem that in the prior art, the amplitude of the fetal electrocardiosignals acquired by a body surface fetal electrocardiosignal electrode system is too small, and even effective fetal electrocardiosignals are difficult to acquire.

According to a first aspect, an embodiment of the present invention provides an electrode system, including: at least one chest electrode configured in the chest area above the horizontal tangent of the uterine fundus of the tested object; a first abdomen electrode, a second abdomen electrode, a third abdomen electrode and a fourth abdomen electrode which are respectively arranged in the upper abdomen area, the lower abdomen area, the right lower abdomen area and the left lower abdomen area of the abdomen of the object and are positioned in the outline of the uterus of the object; the chest electrode and the abdomen electrode are respectively and electrically connected to a electrocardio module through lead wires, and the electrocardio module receives electric signals from the abdomen electrode and the chest electrode, processes the signals and sends the signals to monitoring equipment.

Furthermore, the lead wire points to the direction of the placement position of the corresponding chest electrode or the corresponding abdomen electrode.

Further, the first abdomen electrode and the second abdomen electrode are respectively arranged in regions which are above and below an X-axis of a uterus coordinate system established with a navel of the object to be measured as a center and are positioned in a uterus contour line of the object to be measured; the third abdomen electrode and the fourth abdomen electrode are respectively arranged in the second quadrant and the third quadrant of the uterus coordinate system and are positioned in the region of the uterus contour line of the measured object.

Further, the electrode system also comprises a fifth abdomen electrode which is configured in an area enclosed by the uterus contour line of the measured object and a fourth quadrant of the uterus coordinate system

Furthermore, the third abdomen electrode and the fifth abdomen electrode are respectively arranged at the intersection of the second quadrant angular bisector and the fourth quadrant angular bisector of the uterus coordinate system and the uterus contour of the object to be measured, and the fourth abdomen electrode is arranged at the intersection of the third quadrant angular bisector of the uterus coordinate system and the uterus contour of the object to be measured.

Further, the first belly electrode is disposed on a Y-axis positive half axis parallel to the fifth belly electrode, and the second belly electrode is disposed on a Y-axis negative half axis parallel to the third belly electrode or the fourth belly electrode.

Further, the chest electrode is placed at any one of positions V1-V6, wherein V1 is located between the fourth ribs at the right edge of the chest, V2 is located between the fourth ribs at the left edge of the sternum, V3 is located at the midpoint of V2 and V4, V4 is located at the intersection of the left clavicle midline and the fifth rib, V5 is located at the same horizontal line as V4 at the left anterior axillary line, and V6 is located at the same horizontal line as V4 at the left axillary midline.

Further, the plurality of abdomen electrodes of the electrode system are all formed on one patch having a sticking or adsorbing structure.

According to a second aspect, an embodiment of the present invention further provides a method for acquiring a body surface fetus electrocardiosignal, including: randomly selecting two abdominal electrodes in an electrode system, establishing a plurality of abdominal electrode channels by taking one of the two abdominal electrodes as a reference electrode and the other abdominal electrode as a tested electrode, and respectively collecting maternal-fetal mixed electrocardiosignals; the electrode system comprises a first abdominal electrode, a second abdominal electrode, a third abdominal electrode and a fourth abdominal electrode which are respectively arranged in the upper abdominal region, the lower abdominal region, the right lower abdominal region and the left lower abdominal region of the abdomen of the tested object and positioned in the outline of the uterus of the tested object; selecting an abdominal electrode and a chest electrode in an electrode system to establish a chest electrode channel and collect maternal electrocardiosignals; wherein, the electrode system also comprises at least one chest electrode which is arranged in the chest area above the horizontal tangent of the uterine fundus of the tested object.

Further, in the step a), the first abdomen electrode is used as a reference electrode, the second abdomen electrode, the third abdomen electrode and the fourth abdomen electrode are used as tested electrodes, three abdomen electrode channels are respectively established, and mother-fetus mixed electrocardiosignals are respectively collected.

Further, in the step b), a chest electrode channel is established by taking the second abdomen electrode as a reference electrode and any one of the chest electrode tested electrodes, and maternal electrocardiosignals are collected.

Further, after the step b), the method further comprises the following steps: and placing the fifth abdomen electrode on any position of the measured object to be used as a right leg driving electrode so as to eliminate signals shared by the abdomen electrode and the chest electrode and the connecting lines of the abdomen electrode and the chest electrode.

According to a third aspect, the embodiment of the present invention further provides a method for measuring a body surface fetal electrocardiosignal, including: respectively acquiring maternal electrocardiosignals and maternal-fetal mixed electrocardiosignals according to the method for acquiring the body surface fetal electrocardiosignals; verifying the obtained maternal-fetal mixed electrocardiosignals according to the obtained maternal electrocardiosignals, and respectively determining a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignals; separating the maternal and fetal electrocardiosignals from the maternal and fetal mixed electrocardiosignals according to the established maternal QRS wave band and the fetal QRS wave band; and analyzing and calculating the separated maternal electrocardiosignals and the fetal electrocardiosignals to obtain the calculation results of the maternal heart rate and the fetal heart rate.

Further, the verifying the acquired maternal-fetal mixed electrocardiosignal according to the acquired maternal electrocardiosignal to respectively establish a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignal includes: detecting a parent QRS wave band from the obtained parent electrocardiosignals; detecting a maternal-fetal mixed QRS wave band from the acquired maternal-fetal mixed electrocardiosignals; comparing the detected position of any one of the parent-child mixed QRS bands with the detected position of the parent QRS band; if the positions are the same, the QRS wave band is determined as the maternal QRS wave band, and if the positions are different, the QRS wave band is determined as the fetal QRS wave band.

According to a fourth aspect, the embodiment of the present invention further provides a device for measuring a fetal electrocardiosignal of a body surface, including: the body surface fetus electrocardiosignal data acquisition unit acquires a maternal electrocardiosignal and a maternal-fetal mixed electrocardiosignal by using the electrode system; the maternal-fetal mixed electrocardiosignal checking unit is used for checking the acquired maternal-fetal mixed electrocardiosignals according to the acquired maternal electrocardiosignals and respectively establishing a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignals; a maternal-fetal mixed electrocardiosignal separation unit which separates and obtains a maternal electrocardiosignal and a fetal electrocardiosignal from the maternal-fetal mixed electrocardiosignal according to the established maternal QRS wave band and the fetal QRS wave band; and the heart rate result output unit is used for analyzing and calculating the separated maternal electrocardiosignals and the fetal electrocardiosignals to obtain the calculation results of the maternal heart rate and the fetal heart rate.

According to a fifth aspect, the embodiment of the present invention further provides a monitoring device, including an electrode system, a display device, a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the method for measuring a fetal body surface electrocardiosignal as described above when executing the computer program; the electrode system is used for acquiring maternal electrocardiosignals and maternal-fetal mixed electrocardiosignals; the display equipment is used for displaying the obtained calculation results of the maternal heart rate and the fetal heart rate.

According to the sixth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to cause the computer to execute the above-mentioned method for measuring a body surface fetal electrocardiosignal.

The technical scheme of the invention has the following advantages:

1. when the electrode system is used for fetal electrocardiogram monitoring, the chest electrode is attached to the chest area above the horizontal tangent of the fundus of the uterus of a tested object, the first abdomen electrode, the second abdomen electrode, the third abdomen electrode and the fourth abdomen electrode are respectively attached to the upper abdomen area, the lower abdomen area, the right lower abdomen area and the left lower abdomen area of the abdomen of the tested object, and the four abdomen electrodes are all positioned in the outline line of the uterus of the tested object. The electrode system adopts the electrode position arrangement mode, so that a plurality of abdomen electrodes can be respectively aligned to the positions of the corresponding fetal facial areas of the detected object matrix, clinical researches show that the area is the area with the best fetal electrocardiosignal conduction, and the abdominal electrodes arranged in the area can finally improve the detection success rate of the fetal electrocardiosignals; meanwhile, each abdomen electrode is far away from the chest area of the detected object matrix, so that the interference influence of the maternal electrocardiosignals on the fetal electrocardiosignals can be reduced to the greatest extent, and the signal-to-noise ratio of the fetal electrocardiosignals is improved.

2. According to the electrode system provided by the invention, the lead wire points to the direction of the corresponding chest electrode or abdomen electrode attaching position, so that a user can quickly position the lead wire required to be used at any chest electrode or abdomen electrode attaching position, and the working efficiency of the user is improved.

3. According to the electrode system provided by the invention, the plurality of abdomen electrodes of the electrode system are all formed on the patch with the pasting or adsorption structure, so that the pasting position of any abdomen electrode can be conveniently and rapidly positioned.

4. According to the method for acquiring the body surface fetal electrocardiosignals, provided by the invention, the maternal-fetal mixed electrocardiosignals are acquired by establishing the plurality of abdominal electrode channels, and the maternal electrocardiosignals are acquired by establishing the chest electrode channel, so that the success rate of detecting the fetal electrocardiosignals can be finally improved.

5. According to the body surface fetus electrocardiosignal measuring method, the mixed maternal-fetal electrocardiosignals obtained from the abdomen of the tested object are positioned, checked and separated through the maternal electrocardiosignals obtained from the chest of the tested object, the maternal electrocardiosignals and the fetus electrocardiosignals are separated from the mixed maternal-fetal signals, the identification of the maternal-fetal electrocardiosignals cannot be reversed, and the accuracy of detecting the fetus electrocardiosignals is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of an electrode system constructed according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the positions of V1-V6 in the chest area of a tested object according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating an implementation of a method for collecting electrocardiosignals of a fetus on a body surface according to an embodiment of the present invention;

FIG. 4 is a flowchart illustrating an implementation of a method for measuring an electrocardiographic signal of a fetus on a body surface according to an embodiment of the present invention;

FIG. 5 is a flowchart illustrating an implementation of a method for determining a maternal QRS band and a fetal QRS band in a maternal-fetal mixed electrocardiographic signal according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a device for measuring an electrocardiographic signal of a fetus on a body surface according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a hardware structure of a monitoring device according to an embodiment of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The application provides an electrode system, a fetal electrocardiosignal acquisition and measurement method and a device, the electrocardiosignal measurement method can be applied to various electronic devices, and the devices are provided with electrocardiosignal acquisition and analysis modules for acquiring and analyzing biological electrocardiosignals. The electronic devices may include, but are not limited to, computers, smart phones, electrocardiographs, wearable electrocardiograph acquisition devices, monitors, and the like.