CN110613442B - Method and device for monitoring contraction activity of mother uterus - Google Patents
Method and device for monitoring contraction activity of mother uterus Download PDFInfo
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Abstract
The invention discloses a method and a device for monitoring the uterine contraction activity of a parent, wherein the method comprises the following steps: acquiring uterine muscle contraction mechanical pressure signals and uterine muscle electrical signals of a mother uterus in real time; processing the acquired mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure value; processing the acquired electrical signal of the uterine muscle to obtain a uterine electrical pressure value; and drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and uterine electrical pressure value. Acquiring a uterine contraction pressure signal and a uterine muscle electrical signal of a pregnant woman in real time, respectively calculating a mechanical uterine pressure value and a mechanical uterine pressure value, and then comparing the two pressure values to draw a uterine contraction pressure curve; because the two pressure values respectively reflect the uterine muscle contraction strength and the uterine muscle electrical activity strength, medical staff can visually see the real uterine muscle contraction state to guide the medical staff to correctly make corresponding treatment measures, and the medical accident risk is reduced.
Description
Technical Field
The invention relates to the technical field of maternal-fetal monitoring, in particular to a method and a device for monitoring maternal uterine contraction activity.
Background
Clinical research shows that the uterine contraction of a parturient is caused by the electrical activity of uterine muscles, action potentials are generated when uterine smooth muscle cells are excited, the action potentials are rapidly transmitted through low-resistance channels between adjacent cells to cause synchronous excitation and contraction of numerous uterine muscle cells, and further cause the pressure change, the diameter and tension change of abdominal walls and the pain feeling of contraction of the parturient, namely the uterine muscle contraction is the result of the electrical activity of the uterine muscles.
At present, clinically, the uterine muscle contraction strength of a pregnant woman is detected through an extrauterine contraction pressure sensor placed in the uterine vertex area of the abdomen of the pregnant woman, the extrauterine contraction pressure sensor senses the abdominal pressure change of the pregnant woman through a stress meter, and the mechanical detection mode is a mechanical detection mode and reflects the mechanical pressure result of uterine muscle contraction.
However, it is not comprehensive to rely on this test method to evaluate the uterine contraction status of pregnant women, because the strength of uterine muscular contraction is related to not only the strength of uterine muscular electrical activity, but also the degree of fatigue of uterine muscle cells, congenital tissue diseases, etc., i.e., the uterine muscular electrical activity of pregnant women is not necessarily completely converted into mechanical uterine muscular contraction activity, which may differ to some extent.
Therefore, if the uterine contraction is detected only by a mechanical way, when the uterine electrical activity is strong but the expressed muscle contraction strength is not strong, the uterine contraction detected by the mechanical way is weaker, at the moment, medical staff may misunderstand that the uterine contraction is weak, so that the medical staff further uses drugs to promote the pregnant woman to generate stronger uterine contraction, but the phenomenon of the uterine contraction weakness presented at the moment is not real without uterine contraction, but the uterine electrical activity cannot be effectively converted into muscle contraction due to factors such as excessive fatigue of uterine muscle cells and the like, so that the uterine contraction pressure probe cannot detect the false image, if the uterine contraction is further promoted by the drugs at the moment, the adverse effect is caused, so that the uterine electrical activity is more frequent, the uterine muscle cells are more fatigued, and the risk of occurrence of tonic uterine contraction and even uterine rupture is increased, resulting in the occurrence of medical accidents.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for monitoring a maternal uterine contraction activity, so as to solve the problem in the prior art that the accuracy of a uterine contraction pressure detected by only using a mechanical detection method is not high.
According to a first aspect, embodiments of the present invention provide a method of monitoring maternal uterine contractile activity, comprising: acquiring uterine muscle contraction mechanical pressure signals and uterine muscle electrical signals of a mother uterus in real time; processing the acquired mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure value; processing the acquired electrical signal of the uterine muscle to obtain a uterine electrical pressure value; and drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and the obtained uterine electrical pressure value.
Further, the processing the acquired mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure value includes: carrying out signal envelope processing on the mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure envelope signal; and dividing the obtained uterus mechanical pressure envelope signal by an envelope value corresponding to a preset pressure value to obtain a uterus mechanical pressure value.
Further, the processing the acquired electrical uterine muscle signals to obtain uterine electrical force values comprises: carrying out noise reduction treatment on the acquired uterine muscle electrical signal to obtain a uterine muscle electrical signal after interference elimination; carrying out signal envelope processing on the uterine muscle electrical signal after interference elimination to obtain a uterine muscle envelope signal; and dividing the uterine muscle envelope signal by an envelope value corresponding to a preset pressure value to obtain a uterine pressure value.
Further, said drawing a uterine contraction pressure curve according to said obtained uterine mechanical pressure value and said uterine electrical pressure value, comprising: comparing the obtained uterine electrical pressure value with the uterine mechanical pressure value; when the uterine pressure value is smaller than the mechanical uterine pressure value, drawing a uterine contraction pressure curve by taking the uterine pressure value as an output result; when the uterine pressure value is larger than or equal to the uterine mechanical pressure value and the absolute value of the difference value between the uterine mechanical pressure value and the uterine pressure value is within a preset range, drawing a uterine contraction pressure curve by taking the uterine mechanical pressure value or the uterine pressure value as an output result; and when the uterus voltage value is larger than the uterus mechanical pressure value and the absolute value of the difference value between the uterus mechanical pressure value and the uterus mechanical pressure value exceeds a preset range, respectively drawing a uterus mechanical pressure curve according to the uterus mechanical pressure value and drawing a uterus voltage curve according to the uterus voltage value.
Further, the uterine electrical pressure curve and the uterine mechanical pressure curve are plotted in different line types.
Further, after the drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and the obtained uterine electrical pressure value, the method further comprises the following steps: marking a uterus voltage value curve drawn according to the uterus voltage value and a uterus mechanical pressure value curve drawn according to the uterus mechanical pressure value on a display area respectively.
Further, the drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and the obtained uterine electrical pressure value further comprises: calculating an average value a1 of all said uterine electrical pressure values of a uterine electrical pressure curve portion in which said uterine electrical pressure value exceeds a first preset threshold value of said uterine mechanical pressure value; calculating an average value a2 of all the uterine mechanical pressure values of the uterine mechanical pressure curve portion for which the uterine electrical pressure value exceeds a first preset threshold value of the uterine mechanical pressure value; the transformation efficiency is obtained according to the ratio of the average value A1 of the uterine electrical pressure value and the average value A2 of the uterine mechanical pressure value, and the transformation efficiency is marked on a display area.
Further, after obtaining the transformation efficiency according to the ratio of the average value A1 of the uterine pressure value to the average value A2 of the uterine mechanical pressure value and marking the transformation efficiency on a display area, the method further comprises the following steps: drawing a closed area at the blank of the display area; the values of the conversion efficiency are shown in the closed area in the form of a scale graph.
Further, the drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and the obtained uterine electrical pressure value further comprises: and comparing the obtained uterus voltage value with the uterus mechanical pressure value, and outputting first early warning information when the uterus voltage value is smaller than the uterus mechanical pressure value.
Further, the drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and the obtained uterine electrical pressure value further comprises: and calculating the average value of the conversion efficiency and the average value of the mechanical pressure value of the uterus within a preset time range, and outputting second early warning information when the average value of the conversion efficiency is greater than a second preset threshold value and the average value of the mechanical pressure value of the uterus is less than a third preset threshold value.
According to a second aspect, embodiments of the present invention provide an apparatus for monitoring maternal uterine contractile activity, comprising: the uterine muscle signal data acquisition unit is used for acquiring uterine muscle contraction mechanical pressure signal data and uterine muscle electrical signal data in real time; the uterine muscle contraction mechanical pressure signal data analysis unit is used for analyzing and calculating the acquired uterine muscle contraction mechanical pressure signal data to obtain a uterine mechanical pressure value; the uterine muscle electrical signal data analysis unit is used for analyzing and calculating the acquired uterine muscle electrical signal data to obtain a uterine electrical voltage value; and the uterine contraction pressure curve drawing unit is used for analyzing and comparing the obtained mechanical uterine pressure value and the uterine pressure value and drawing a uterine contraction pressure curve.
According to a third aspect, embodiments of the present invention further provide a maternal and fetal monitoring device, comprising an electrode system, a display device, a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the method for monitoring maternal uterine contraction activity as described above when executing the computer program, the electrode system being configured to acquire a uterine muscle contraction mechanical pressure signal and a uterine muscle electrical signal of a subject to be tested, the display device being configured to display the uterine contraction pressure curve.
According to a fourth aspect, embodiments of the present invention also provide a computer-readable storage medium having stored thereon computer instructions for causing the computer to perform the method of monitoring maternal uterine contraction activity as described above.
The technical scheme of the invention has the following advantages: in the embodiment of the invention, the uterine contraction pressure signal and the uterine muscle electrical signal of the pregnant woman are acquired in real time, the mechanical uterine pressure value and the uterine pressure value are respectively calculated, then the two pressure values are analyzed, and a uterine contraction pressure curve is drawn on a display area; because the two pressure values respectively reflect the uterine muscle contraction strength and the uterine muscle electrical activity strength, medical staff can visually see the current real uterine muscle contraction state so as to guide the medical staff to correctly make corresponding treatment measures and reduce the risk of medical accidents.
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 flowchart of an implementation of a method for monitoring uterine contractile activity of a mother provided in one embodiment of the present invention;
fig. 2 is a flowchart of a specific implementation of a uterine mechanical pressure value calculation method according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a specific implementation of a uterine voltage value calculating method according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a curve of uterine contraction pressure in accordance with an embodiment of the present invention;
FIG. 5 is a graph showing a uterine contraction pressure curve according to another embodiment of the first embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an apparatus for improving uterine contraction recognition accuracy according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a mother-fetus monitoring device according to a third 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 a method and a device for monitoring the contraction activity of a mother uterus, which can be applied to various electronic devices, wherein 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.
Referring to fig. 1, an embodiment of the present invention provides a method for monitoring uterine contractile activity of a mother, which specifically includes the following steps:
and step S10, acquiring the mechanical pressure signal of uterine muscle contraction and the electrical signal of uterine muscle of the mother uterus in real time.
In this embodiment, after the monitoring device is started, the uterine muscle signal data acquisition program respectively obtains the mechanical pressure signal of uterine muscle contraction and the electrical signal of uterine muscle through the external uterine contraction pressure sensor, the electrocardiograph sensor and the lead wire in real time, converts the mechanical pressure signal of uterine muscle contraction and the electrical signal of uterine muscle into digital signal data, and stores the digital signal data in the corresponding buffer area. Specifically, the mechanical pressure signal of uterine muscle contraction and the electrical signal of uterine muscle are both obtained by adopting an in-vitro monitoring mode, the mechanical pressure signal of uterine contraction activity is obtained by binding or pressing the external uterine contraction pressure sensor on the abdomen of a parent of a tested object, and the mixed maternal-fetal electrocardiosignals including the electrical signal of uterine muscle are obtained by the electrocardio sensor by adopting a plurality of electrode patches attached to the abdomen of the parent of the tested object.
And step S20, processing the acquired mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure value.
In this embodiment, after the external uterine contraction pressure sensor obtains the data of the mechanical uterine muscle contraction pressure signal, the pressure calculation program obtains the mechanical uterine pressure value by envelope processing according to the obtained mechanical uterine muscle contraction pressure signal through a preset algorithm.
And step S30, processing the acquired electrical signal of the uterine muscle to obtain a uterine electrical pressure value.
In this embodiment, after the electrocardiograph sensor independently obtains the data of the electrical signal of the uterine muscle through the plurality of electrode patches, the pressure calculation program calculates the uterine voltage value according to the electrical signal of the uterine muscle obtained by the electrocardiograph sensor through a preset algorithm. The electrode patch is attached to the abdomen of a mother body of a tested object, and the obtained electric signals are mixed electrocardiosignals including uterine muscle electric signals, mother body electrocardiosignals, fetal electrocardiosignals, electromagnetic interference signals and the like, so that before calculating the uterine voltage value, noise reduction treatment needs to be carried out on the obtained mixed electrocardiosignals to obtain clean uterine muscle electric signals.
And step S40, drawing a uterine contraction pressure curve according to the obtained uterine mechanical pressure value and uterine voltage value.
In the present embodiment, the calculated two pressure values are compared and analyzed, and a uterine contraction pressure curve is plotted on a display device. Because the two pressure values respectively reflect the uterine muscle contraction strength and the uterine muscle electrical activity strength, medical staff can visually see the current real state of uterine muscle contraction through the uterine contraction pressure curve so as to guide the medical staff to correctly make corresponding treatment measures and reduce the risk of medical accidents.
Referring to fig. 2, in step S20, one specific embodiment of processing the acquired mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure value includes:
step S201, carrying out signal envelope processing on the mechanical pressure signal of uterine muscle contraction to obtain a mechanical pressure envelope signal of uterus.
Specifically, a preset low-pass filter can be adopted to process the mechanical pressure signal of uterine muscle contraction, so that the noise in the mechanical pressure signal of uterine muscle contraction can be eliminated, and the denoising effect is achieved.
And S202, dividing the obtained uterus mechanical pressure envelope signal by an envelope value corresponding to a preset pressure value to obtain a uterus mechanical pressure value.
Referring to fig. 3, in step S30, one embodiment of processing the acquired uterine muscle electrical signal to obtain a uterine electrical pressure value includes:
and S301, performing noise reduction processing on the acquired uterine muscle electrical signal to obtain the uterine muscle electrical signal after interference elimination.
Specifically, the interference signal includes maternal electrocardiogram, fetal electrocardiogram, baseline drift, power frequency and other electrical signals. For maternal electrocardio, a plurality of elimination methods are available, the maternal electrocardio can be removed by adopting a matched filtering method, and a preset band-pass filter can be generally adopted to process the obtained abdomen mixed electric signal containing the uterine muscle electric signal so as to obtain the uterine muscle electric signal without maternal electrocardio interference. For fetal electrocardio, because the electrocardio is weak and is about 1/5-1/10 of maternal electrocardio, the fetal electrocardio can be ignored under the condition of reasonably placing an electrode patch; of course, matched filtering can be used to remove the fetal ecg signal from the mixed electrical signal. In addition, when the electrode system is used for signal acquisition, the electrode system is also influenced by power frequency interference, and the obtained abdomen mixed signal can be sent to a front-value differential amplifying circuit and a 50HZ double-T trap circuit to inhibit common-mode signals such as power frequency interference and the like. There are many methods for eliminating interference signals, and blind source separation can be used, and various required electrical signals including uterine muscle electrical signals can be separated by a series of mathematical deductions by using the statistical independence characteristics of various electrical signals.
And S302, carrying out signal envelope processing on the uterine muscle electric signal after the interference is eliminated to obtain a uterine muscle envelope signal. Specifically, before signal envelope processing is performed on the uterine muscle electrical signal after the interference is removed, the uterine muscle electrical signal after the interference is removed needs to be rectified.
And step S303, dividing the uterine muscle envelope signal by an envelope value corresponding to a preset pressure value to obtain a uterine pressure value.
Referring to fig. 4, in one embodiment of step S40, the process of drawing the uterine contraction pressure curve according to the obtained mechanical uterine pressure value and the obtained electrical uterine pressure value is as follows:
for each time point, the resulting uterine electrical pressure value and uterine mechanical pressure value are compared. When the uterine electrical pressure value is smaller than the uterine mechanical pressure value, the uterine mechanical pressure value is interfered by maternal movement and the like, and an erroneous pressure detection result is generated, and at the moment, the uterine electrical pressure value is taken as an output result to draw a uterine contraction pressure curve. When the mechanical uterine pressure value is larger than or equal to the mechanical uterine pressure value and the absolute value of the difference value between the mechanical uterine pressure value and the mechanical uterine pressure value is within the preset range, the mechanical uterine pressure value at the moment is completely converted from the mechanical uterine pressure value, the mechanical uterine pressure value and the mechanical uterine pressure value are both responses of the real activity state of the uterus, and the mechanical uterine pressure value or the mechanical uterine pressure value can be used as an output result to draw a uterine contraction pressure curve at the moment. When the uterus electrical pressure value is greater than the uterus mechanical pressure value and the absolute value of the difference value between the uterus mechanical pressure value and the uterus mechanical pressure value exceeds the preset range, the uterus electrical activity cannot be effectively converted into the uterus muscle mechanical contraction activity due to the fact that the uterus muscle cell fatigue is excessive, a uterus mechanical pressure curve is drawn according to the uterus mechanical pressure value and a uterus electrical pressure curve is drawn according to the uterus electrical pressure value at the moment, and the uterus contraction pressure curve of the part comprises a uterus mechanical pressure curve part and a uterus electrical pressure curve part.
For the convenience of identification, the uterus electric pressure curve part and the uterus mechanical pressure curve are distinguished by curves in different line types, for example, curves in different colors or thicknesses are adopted, and the curve contents displayed by the drawing method are clear, so that the curve contents are easy to understand by a user. In order to further facilitate understanding of a user, a uterus electric pressure value curve drawn according to the uterus electric pressure value and a uterus mechanical pressure value curve drawn according to the uterus mechanical pressure value are respectively marked in characters on the display area.
Furthermore, since the area enclosed by the uterine electrical pressure curve and the uterine mechanical pressure curve is the missing part of the uterine muscle electrical signal converted into the uterine muscle contraction mechanical pressure signal, it can be filled with a specific color or shape to highlight the missing part, which is more intuitive to look.
In order to rapidly master the real state of the uterine muscle, the conversion efficiency of the uterine pressure value converted into the mechanical uterine pressure value can be calculated according to the drawn uterine contraction pressure curve. The conversion efficiency was calculated as follows: calculating an average value a1 of all uterine electrical pressure values of the uterine electrical pressure curve portion for which the uterine electrical pressure value exceeds a first preset threshold value of the uterine mechanical pressure value; calculating an average value A2 of all uterine mechanical pressure values of the uterine mechanical pressure curve portion for which the uterine pressure value exceeds a first preset threshold value of the uterine mechanical pressure value; the transformation efficiency was obtained from the ratio of the average value of uterine electrical pressure values a1 and the average value of uterine mechanical pressure values a2, and the obtained transformation efficiency was marked on the display area. The mark of the conversion efficiency can enable a user to easily see the difference and the conversion relation between the uterine muscle electrical signal and the uterine muscle contraction signal, and quickly master the real state of the uterine muscle, so as to judge whether the uterine contraction of the pregnant woman needs to be clinically intervened.
Referring to fig. 5, in another embodiment of step S40, the process of drawing the uterine contraction pressure curve according to the obtained uterine mechanical pressure value and uterine electrical pressure value is as follows: and according to the obtained mechanical pressure value of the uterus, only drawing a uterine contraction pressure curve in a uterine contraction pressure curve drawing coordinate system. Or to plot the uterine pressure curve based solely on the obtained uterine pressure values.
In one embodiment of this embodiment, the method further comprises, after the step of plotting the uterine contraction pressure curve: drawing a rectangular area at a blank position above the uterine contraction pressure curve display area; the shape of the region may not be limited to a rectangle; the value of the conversion efficiency is displayed in the form of a bar scale graph in the rectangular area and filled in with a specific color, and the conversion efficiency can be identified in the rectangular area. The drawing method only draws one pressure curve, the conversion efficiency is embodied in the form of a bar scale chart, and the conversion efficiency between the uterine muscle electrical signal and the uterine muscle contraction signal can be easily seen by a user while the uterine contraction pressure curve display area is kept relatively simple and tidy, so that the real state of the uterine muscle can be rapidly mastered.
In this embodiment, for each time point, comparing the obtained uterine pressure value with the mechanical uterine pressure value, when the electrical uterine pressure value is smaller than the mechanical uterine pressure value, it is indicated that the mechanical uterine pressure value is interfered by maternal movement and the like to generate an erroneous pressure detection result, a data proportion of the mechanical uterine pressure value interfered is counted, and when the proportion exceeds a certain threshold, first warning information can be given to prompt a user to adjust the position of the outer uterine contraction pressure sensor in time.
In this embodiment, the average value of the conversion efficiency and the average value of the mechanical uterine pressure within the latest preset time range are calculated, and when the average value of the conversion efficiency is greater than the second preset threshold and the average value of the mechanical uterine pressure is smaller than the third preset threshold, it indicates that the current real uterine contraction strength is insufficient, and second warning information can be given to prompt the user to pay attention to and process the uterine contraction strength in time.
Of course, for the drawing of the uterine contraction pressure curve, the uterine pressure curve and the mechanical uterine pressure curve of different colors or thicknesses can be directly and independently drawn in the uterine contraction pressure curve display area, which is commonly used in the industry.
Referring to fig. 6, a second embodiment of the present invention provides an apparatus for monitoring maternal uterine contractile activity, the apparatus comprising:
the uterine muscle signal data acquisition unit 10 is used for acquiring uterine muscle contraction mechanical pressure signal data and uterine muscle electrical signal data in real time;
the uterine muscle contraction mechanical pressure signal data analysis unit 20 is used for analyzing and calculating the acquired uterine muscle contraction mechanical pressure signal data to obtain a uterine mechanical pressure value;
the uterine muscle electrical signal data analysis unit 30 is used for analyzing and calculating the acquired uterine muscle electrical signal data to obtain a uterine electrical pressure value;
the uterine contraction pressure curve drawing unit 40 analyzes and compares the obtained mechanical uterine pressure value and the uterine pressure value in real time, and draws a uterine contraction pressure curve in a display area according to the analysis result.
In the specific operation process: the uterine muscle signal data acquisition unit 10 acquires mechanical pressure signal data and electrical signal data of uterine muscles in real time and stores the mechanical pressure signal data and the electrical signal data of uterine muscles in corresponding buffer areas; the uterine muscle contraction mechanical pressure signal data analysis unit 20 analyzes and calculates the acquired uterine muscle contraction mechanical pressure signal data in real time to obtain a uterine mechanical pressure value, the uterine muscle electrical signal data analysis unit 30 analyzes and calculates the acquired uterine electrical signal data in real time to obtain a uterine voltage value, and finally the uterine contraction pressure curve drawing unit 40 further analyzes and compares the calculated uterine mechanical pressure value and the uterine voltage value, draws and outputs the values to a monitoring system program interface in a specific form, and completes functions of displaying, printing, storing and the like of a uterine contraction pressure curve.
According to the device for monitoring the uterine contraction activity of the mother body, provided by the embodiment of the invention, a uterine contraction pressure signal and a uterine muscle electrical signal of a pregnant woman are acquired in real time through the uterine muscle signal data acquisition unit 10, a uterine mechanical pressure value and a uterine voltage value are respectively calculated through the uterine muscle contraction mechanical pressure signal data analysis unit 20 and the uterine muscle electrical signal data analysis unit 30, then the uterine contraction pressure curve drawing unit 40 analyzes the two pressure values, and a uterine contraction pressure curve is drawn on a display area; because the two pressure values respectively reflect the uterine muscle contraction strength and the uterine muscle electrical activity strength, medical staff can visually see the current real uterine muscle contraction state so as to guide the medical staff to correctly make corresponding treatment measures and reduce the risk of medical accidents.
As shown in fig. 7, a third embodiment of the present invention provides a maternal and fetal monitoring device, which may include, but is not limited to, a computer, a smart phone, an electrocardiograph, a wearable electrocardiograph acquisition device, a monitor, and so on. The maternal and fetal monitoring device may include, but is not limited to, an electrode system, a display device, a processor 51 and a memory 52. Those skilled in the art will appreciate that fig. 7 is merely an example of a maternal monitoring device and is not intended to be limiting and may include more or fewer components than shown, or some components in combination, or different components, e.g., the maternal monitoring device may also include input-output devices, network access devices, buses, etc. The processor 51 and the memory 52 may be connected by a bus or other means, and fig. 6 illustrates the connection by the bus as an example. The electrode system is used for acquiring uterine muscle contraction mechanical pressure signals and uterine muscle electrical signals of a to-be-detected object, and the display device is used for displaying a uterine contraction pressure curve.
The processor 51 may be a Central Processing Unit (CPU). The Processor 51 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof.
The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 51, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 52 may optionally include memory located remotely from the processor 51, and these remote memories may be connected to the processor 51 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory 52 and when executed by the processor 51 perform a method of monitoring maternal uterine contractile activity as in the embodiment shown in fig. 1.
The details of the mother-fetus monitoring device can be understood by referring to the corresponding related descriptions and effects in the embodiment shown in fig. 6, which are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (13)
1. A method of monitoring maternal uterine contractile activity, comprising:
acquiring uterine muscle contraction mechanical pressure signals and uterine muscle electrical signals of a mother uterus in real time;
processing the acquired mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure value;
processing the acquired electrical signal of the uterine muscle to obtain a uterine electrical pressure value;
and for each time point, comparing the obtained mechanical uterine pressure value with the uterine pressure value, and drawing a uterine contraction pressure curve in the same coordinate system according to the comparison result.
2. The method of monitoring maternal uterine contractile activity according to claim 1, wherein the processing of the acquired uterine muscle contraction mechanical pressure signals to obtain uterine mechanical pressure values comprises:
carrying out signal envelope processing on the mechanical uterine muscle contraction pressure signal to obtain a mechanical uterine pressure envelope signal;
and dividing the obtained uterus mechanical pressure envelope signal by an envelope value corresponding to a preset pressure value to obtain a uterus mechanical pressure value.
3. The method of monitoring maternal uterine contractile activity according to claim 1, wherein the processing of the acquired uterine muscle electrical signals to obtain uterine electrical force values comprises:
carrying out noise reduction treatment on the acquired uterine muscle electrical signal to obtain a uterine muscle electrical signal after interference elimination;
carrying out signal envelope processing on the uterine muscle electrical signal after interference elimination to obtain a uterine muscle envelope signal;
and dividing the uterine muscle envelope signal by an envelope value corresponding to a preset pressure value to obtain a uterine pressure value.
4. A method of monitoring maternal uterine contractile activity according to any one of claims 1-3, characterised in that the profiling of uterine contractile pressure from the obtained mechanical uterine pressure values and electrical uterine pressure values comprises:
comparing the obtained uterine electrical pressure value with the uterine mechanical pressure value;
when the uterine pressure value is smaller than the mechanical uterine pressure value, drawing a uterine contraction pressure curve by taking the uterine pressure value as an output result;
when the uterine pressure value is larger than or equal to the uterine mechanical pressure value and the absolute value of the difference value between the uterine mechanical pressure value and the uterine pressure value is within a preset range, drawing a uterine contraction pressure curve by taking the uterine mechanical pressure value or the uterine pressure value as an output result;
and when the uterus voltage value is larger than the uterus mechanical pressure value and the absolute value of the difference value between the uterus mechanical pressure value and the uterus mechanical pressure value exceeds a preset range, respectively drawing a uterus mechanical pressure curve according to the uterus mechanical pressure value and drawing a uterus voltage curve according to the uterus voltage value.
5. The method of monitoring maternal uterine contractile activity according to claim 4, characterized in that the uterine electrical pressure curve and the uterine mechanical pressure curve are plotted in different line types.
6. The method of monitoring maternal uterine contractile activity according to claim 5, wherein, after the profiling uterine contractile pressure from the obtained uterine mechanical pressure value and uterine electrical pressure value, further comprising:
marking a uterus voltage value curve drawn according to the uterus voltage value and a uterus mechanical pressure value curve drawn according to the uterus mechanical pressure value on a display area respectively.
7. The method of monitoring maternal uterine contractile activity according to claim 6, wherein the mapping of uterine contractile pressure curves according to the obtained mechanical and electrical uterine pressure values further comprises:
calculating an average value a1 of all said uterine electrical pressure values of a uterine electrical pressure curve portion in which said uterine electrical pressure value exceeds a first preset threshold value of said uterine mechanical pressure value;
calculating an average value a2 of all the uterine mechanical pressure values of the uterine mechanical pressure curve portion for which the uterine electrical pressure value exceeds a first preset threshold value of the uterine mechanical pressure value;
the transformation efficiency is obtained according to the ratio of the average value A1 of the uterine electrical pressure value and the average value A2 of the uterine mechanical pressure value, and the transformation efficiency is marked on a display area.
8. The method of monitoring maternal uterine contractile activity according to claim 7, wherein, after obtaining the transformation efficiency from the ratio of the mean value of uterine electrical stress values a1 and the mean value of uterine mechanical stress values a2, and marking the transformation efficiency on a display area, further comprising:
drawing a closed area at the blank of the display area;
the values of the conversion efficiency are shown in the closed area in the form of a scale graph.
9. The method of monitoring maternal uterine contractile activity according to claim 4, wherein the mapping of uterine contractile pressure curves from the obtained mechanical and electrical uterine pressure values further comprises:
and comparing the obtained uterus voltage value with the uterus mechanical pressure value, and outputting first early warning information when the uterus voltage value is smaller than the uterus mechanical pressure value.
10. The method of monitoring maternal uterine contractile activity according to claim 7, wherein the mapping of uterine contractile pressure curves from the obtained mechanical and electrical uterine pressure values further comprises:
and calculating the average value of the conversion efficiency and the average value of the mechanical pressure value of the uterus within a preset time range, and outputting second early warning information when the average value of the conversion efficiency is greater than a second preset threshold value and the average value of the mechanical pressure value of the uterus is less than a third preset threshold value.
11. A device for monitoring maternal uterine contractile activity, comprising:
the uterine muscle signal data acquisition unit is used for acquiring uterine muscle contraction mechanical pressure signal data and uterine muscle electrical signal data in real time;
the uterine muscle contraction mechanical pressure signal data analysis unit is used for analyzing and calculating the acquired uterine muscle contraction mechanical pressure signal data to obtain a uterine mechanical pressure value;
the uterine muscle electrical signal data analysis unit is used for analyzing and calculating the acquired uterine muscle electrical signal data to obtain a uterine electrical voltage value;
and the uterine contraction pressure curve drawing unit is used for comparing the obtained uterine mechanical pressure value and the uterine voltage value at each time point and drawing a uterine contraction pressure curve in the same coordinate system according to the comparison result.
12. Maternal and fetal monitoring device comprising an electrode system for acquiring uterine muscle contraction mechanical pressure signals and uterine muscle electrical signals of a subject to be tested, a display device for displaying said uterine contraction pressure curves, a memory, a processor and a computer program stored in said memory and executable on said processor, said processor when executing said computer program implementing a method for monitoring maternal uterine contraction activity according to any of claims 1-10.
13. A computer readable storage medium storing computer instructions for causing a computer to perform the method of monitoring maternal uterine contraction activity of any one of claims 1 to 10.
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