CN114533081A - Paroxysmal atrial fibrillation detection device fused with premature beat suppression strategy - Google Patents
Paroxysmal atrial fibrillation detection device fused with premature beat suppression strategy Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/346—Analysis of electrocardiograms
- A61B5/349—Detecting specific parameters of the electrocardiograph cycle
- A61B5/361—Detecting fibrillation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
Abstract
The invention provides a paroxysmal atrial fibrillation detection device fused with a premature beat inhibition strategy, which comprises: the device comprises a physiological signal acquisition module, a paroxysmal atrial fibrillation detection module and a display output module, wherein the paroxysmal atrial fibrillation detection module is fused with a premature beat suppression strategy. The physiological signal acquisition module records human physiological signals with long time, such as pulse and electrocardio signals. The paroxysmal atrial fibrillation detection module fused with the premature beat inhibition strategy reads the digital signals from the physiological signal acquisition module, extracts rhythm change characteristics after preprocessing, and screens suspected atrial fibrillation based on a threshold value beat by beat. The screened suspected atrial fibrillation rhythm is subjected to single-shot, frequent and combined-rhythm premature beat inhibition in sequence, and then paroxysmal atrial fibrillation statistics are carried out regularly, so that real-time and accurate early warning of the atrial fibrillation rhythm and long-range analysis of the paroxysmal atrial fibrillation are realized. And finally, displaying, storing and transmitting the result through a display output module. The method can inhibit premature beat interference in the detection of the paroxysmal atrial fibrillation, realizes the cardiac beat level positioning of the onset and the stop of the paroxysmal atrial fibrillation, and has simple and portable algorithm.
Description
Technical Field
The invention relates to a paroxysmal atrial fibrillation detection device fused with a premature beat suppression strategy, and belongs to the technical field of signal detection and medical electronics.
Background
Atrial fibrillation is the most common cardiac arrhythmia in clinical practice. In atrial fibrillation, an atrium loses the contractile function, blood stagnates in the atrium easily to form thrombus, and after the thrombus falls off, the thrombus can flow to all parts of the body along with the blood, so cerebral embolism (stroke), limb arterial embolism (serious patients even need amputation) and the like are caused. Atrial fibrillation can be divided into paroxysmal atrial fibrillation, persistent atrial fibrillation and permanent atrial fibrillation according to duration. Paroxysmal atrial fibrillation is generally considered to be a person capable of self-reverting to sinus rhythm within 7 days, and generally lasts less than 48 hours; persistent atrial fibrillation refers to a condition that can be converted into sinus rhythm only by medicine or electric shock after lasting for more than 7 days; permanent atrial fibrillation refers to a person who cannot revert to sinus rhythm or relapse within 24 hours after reversion.
Paroxysmal atrial fibrillation is at risk of causing stroke and thromboembolism, and is associated with a high incidence of complications that can be life threatening. However, due to its own characteristics, it is difficult to detect, and a good control effect can be achieved only by performing early analysis and intervention on a patient in a long-term electrocardiographic examination for many times. The occurrence of paroxysmal atrial fibrillation can not be detected in the first 48 hours of dynamic electrocardiogram monitoring generally, the traditional detection method of the hospital is long-term electrocardiogram monitoring, the operation is difficult, the comfort is poor, and the price is high, and the wearable physiological signal monitoring system not only saves the cost of equipment and improves the comfort, but also can realize local real-time analysis and remote information communication, and has become the main trend of mobile medical products. However, mobile platforms have limited computational power, and the analysis algorithms running on such platforms are not necessarily too complex in time and space. Most of the existing atrial fibrillation detection algorithms are based on machine learning methods such as a neural network, and the algorithms are complex and are mostly only suitable for detecting permanent atrial fibrillation. Patients with paroxysmal atrial fibrillation are usually accompanied with severe premature beats, and frequent premature beat and heart beat are usually carried out when the atrial fibrillation does not occur. Most of the previously developed atrial fibrillation diagnostic algorithms are not designed with reasonable premature beat screening algorithms, so that the algorithm can wrongly judge the premature beat rhythm as the atrial fibrillation rhythm, and the atrial fibrillation attack duration of a paroxysmal atrial fibrillation patient is wrongly evaluated due to the design defects of the algorithm. Therefore, the method and the device for detecting the paroxysmal atrial fibrillation fused with the premature beat inhibition strategy are provided, a proper physiological signal is selected to be monitored according to the condition, the real-time performance and the comfort of detection are guaranteed, the interference of the premature beat signal in long-term monitoring can be effectively inhibited, the accuracy of the paroxysmal atrial fibrillation detection is guaranteed, the atrial fibrillation load and the cardiac burden of a patient with the paroxysmal atrial fibrillation are correctly evaluated, a doctor is assisted to reasonably design a treatment scheme, and the method and the device have important significance for the treatment and the rehabilitation of the patient with the paroxysmal atrial fibrillation.
Disclosure of Invention
The technical problem is as follows:
the method is required to solve the problem that the paroxysmal atrial fibrillation is difficult to detect in long-range physiological signal monitoring, and is expected to achieve the aims of inhibiting premature beat interference in the paroxysmal atrial fibrillation detection, positioning the onset point of the paroxysmal atrial fibrillation at the heart beat level, accurately early warning the atrial fibrillation rhythm in real time and analyzing the long range of the paroxysmal atrial fibrillation by using a simple algorithm.
The technical scheme is as follows:
the invention provides a paroxysmal atrial fibrillation detection device fused with a premature beat inhibition strategy, which can screen single premature beats, frequent premature beats and conjunctive premature beats in long-range physiological signal monitoring, realize real-time and accurate atrial fibrillation monitoring, obtain a long-range analysis result of paroxysmal atrial fibrillation through timing statistics, effectively prevent risks caused by sudden cardiovascular diseases, correctly evaluate atrial fibrillation loads and cardiac burdens of patients with paroxysmal atrial fibrillation, and assist doctors in reasonably designing treatment schemes.
The invention adopts the following technical scheme:
a paroxysmal atrial fibrillation detection device fused with a premature beat suppression strategy adopts an embedded system structure design, and comprises: the device comprises a physiological signal acquisition module, a paroxysmal atrial fibrillation detection module and a display output module, wherein the paroxysmal atrial fibrillation detection module is fused with a premature beat suppression strategy. The physiological signal acquisition module comprises a sensor unit for sensing signals and a signal detection unit for processing the signals; the paroxysmal atrial fibrillation detection module fused with the premature beat inhibition strategy comprises a physiological signal reading unit for reading signals, a signal preprocessing unit for denoising processing and feature point detection, a feature extraction unit for extracting physiological signal features, a beat-by-beat atrial fibrillation screening unit for preliminarily screening atrial fibrillation, a premature beat signal inhibition unit for inhibiting single premature beats, inhibiting frequent premature beats and inhibiting joint rhythm premature beats and a paroxysmal atrial fibrillation statistic unit for long-range analysis; the display output module comprises a display interface unit for displaying the detection result, a local storage unit for storing data and a data communication unit for data transmission.
As a further improvement of the invention, the physiological signals comprise pulse signals, electrocardio signals or other physiological signals capable of extracting rhythm characteristics, and corresponding sensor units can be selected for collection according to implementation conditions.
As a further improvement of the invention, the signal detection unit of the physiological signal acquisition module adopts a signal conditioning circuit and an MCU (microprogrammed control unit) to detect signals, including signal amplification, shaping, analog-to-digital conversion and the like, so as to realize real-time acquisition of the physiological signals, and then digital signals are input to the paroxysmal atrial fibrillation detection module which integrates the premature beat inhibition strategy. .
As a further improvement of the invention, the paroxysmal atrial fibrillation detection module fusing the premature beat suppression strategy is embedded in an MCU internal system of the physiological signal acquisition module, and a detection algorithm can also be implemented in an external mobile platform and other wearable physiological signal acquisition equipment and is transmitted in a wired or wireless mode, so that the real-time and light monitoring and early warning functions of the atrial fibrillation rhythm based on the wearable physiological signals are realized.
As a further improvement of the invention, the paroxysmal atrial fibrillation detection module fused with the premature beat inhibition strategy can monitor atrial fibrillation rhythms in real time only by processing single-channel physiological signals, redundant errors cannot be introduced in dynamic measurement, and the module is simple and portable and has high detection efficiency.
As a further improvement of the invention, in the paroxysmal atrial fibrillation detection module with the premature beat suppression strategy fused, the signal reading unit reads a signal segment formed by continuous n-time beat signals acquired by the physiological signal acquisition module; the signal preprocessing unit only needs to simply preprocess the signal, including denoising and feature point detection; the characteristic extraction unit extracts rhythm information of the physiological signal, such as the pulse interval and the like, and the method does not involve complex signal processing and waveform characteristic extraction and is simple and rapid.
As a further improvement of the invention, the paroxysmal atrial fibrillation detection module fusing the premature beat inhibition strategy defines the ratio of the standard deviation of the beat intervals of n continuous signals around each beat of the physiological signal to the average value thereof as the rhythm variation characteristic of the beat of the physiological signal.
As a further improvement of the invention, the beat-to-beat atrial fibrillation screening unit of the paroxysmal atrial fibrillation detection module integrated with the premature beat inhibition strategy can screen suspected atrial fibrillation rhythms according to the rhythm variation characteristics expressed by each beat of physiological signals, wherein the suspected atrial fibrillation rhythms are judged as if the rhythm variation characteristics are smaller than a threshold value, and the suspected atrial fibrillation rhythms are judged as if the rhythm variation characteristics are larger than the threshold value.
As a further improvement of the invention, the module for detecting the paroxysmal atrial fibrillation fused with the premature beat inhibition strategy eliminates the influence of non-atrial fibrillation signals such as premature beats in suspected atrial fibrillation by the premature beat signal inhibition unit, can position the onset point of the paroxysmal atrial fibrillation according to the heart beat, realizes the heart beat level positioning of the onset point of the paroxysmal atrial fibrillation, and improves the accuracy rate of judging the paroxysmal atrial fibrillation.
As a further improvement of the invention, the premature beat suppression unit of the paroxysmal atrial fibrillation detection module integrated with the premature beat suppression strategy comprises a single premature beat suppression link, a frequent premature beat suppression link and a joint rhythm premature beat suppression link; the single premature beat inhibition link judges whether the number of the suspected atrial fibrillation beats is less than a threshold value m: setting m as an integer larger than n, selecting according to specific precision requirements, judging as single premature beat when the continuous number of suspected atrial fibrillation beats is smaller than m, and deleting the suspicion of atrial fibrillation; when the duration time of the suspected atrial fibrillation pulse is longer than m pulses, a suspected atrial fibrillation segment is formed, and whether the rhythm change characteristic of the suspected atrial fibrillation pulse is an atrial fibrillation rhythm or not is further judged through the frequent premature beat inhibition link; and the frequent premature beat inhibition link selects a beat interval close to the median value to carry out rhythm screening again, and if the rhythm change characteristics are smaller than a threshold value, the frequent premature beat is judged and the suspicion of atrial fibrillation is deleted. And the rest suspected atrial fibrillation segments pass through the joint rhythm premature beat inhibition link, a larger beat interval is reselected for rhythm screening again, if the rhythm change characteristics are all smaller than a threshold value at the moment, the joint rhythm premature beat is judged, the suspicion of atrial fibrillation is deleted, and if the rhythm change characteristics are still larger than the threshold value, the atrial fibrillation rhythm is determined.
As a further improvement of the invention, in the paroxysmal atrial fibrillation detection module fusing the premature beat inhibition strategy, the paroxysmal atrial fibrillation statistical unit periodically counts the atrial fibrillation results detected in real time, analyzes the paroxysmal atrial fibrillation conditions and generates a long-range analysis report.
As a further improvement of the invention, the display interface unit of the display output module displays and alarms the real-time physiological signal waveform and the atrial fibrillation detection result through a screen, so that a patient can know the heart condition in real time and see a doctor in time; meanwhile, a long-range analysis report of paroxysmal atrial fibrillation is displayed, so that the illness state of a patient can be conveniently analyzed; the local storage unit stores the acquired physiological signals and atrial fibrillation detection results locally, so that long-term recording and future inquiry are facilitated, data support is provided for later evaluation of cardiac burden changes of patients, and reference is provided for doctors to reasonably design treatment schemes; the data communication unit is communicated with external equipment in a wired or wireless mode, and sends the acquired physiological signals and atrial fibrillation detection results to other terminals.
As a further improvement of the method, the method can be used for detecting paroxysmal atrial fibrillation in long-term physiological signal monitoring, can effectively inhibit premature beat interference, and can output an atrial fibrillation detection result after screening to ensure the detection accuracy; the method is convenient and quick, machine learning algorithm is not used, wearable equipment with low computing power can be implanted for real-time analysis, and relevant application of mobile medical treatment is carried out.
Has the advantages that:
1. the paroxysmal atrial fibrillation detection module which is integrated with the premature beat inhibition strategy has universality and portability, does not limit the type of physiological signals, and can be used for extracting physiological signals of rhythm information such as pulse, electrocardio and the like;
2. the paroxysmal atrial fibrillation detection module which integrates the premature beat inhibition strategy is adopted, only the physiological signal of a single channel needs to be processed, the atrial fibrillation rhythm can be monitored in real time, redundant errors cannot be introduced in dynamic measurement, and the device is simple and portable and has high detection efficiency;
3. the paroxysmal atrial fibrillation detection module which is integrated with the premature beat inhibition strategy is adopted, only simple preprocessing is needed to be carried out on signals, noise is removed, the positions of characteristic points are detected, only the rhythm characteristics of the signals need to be extracted, the morphological characteristics of waveforms are not involved, the calculation is simple, the processing effect on dynamic data with large baseline drift is good, and the detection accuracy rate is high;
4. the paroxysmal atrial fibrillation detection module with the premature beat inhibition strategy fused can screen signals of single premature beats, frequent premature beats and conjunctive premature beats, effectively inhibits the interference of the premature beat signals on atrial fibrillation detection in long-range monitoring, and has high detection accuracy.
5. The paroxysmal atrial fibrillation detection module which integrates the premature beat inhibition strategy can position the onset point of the paroxysmal atrial fibrillation according to the heart beat, realize the heart beat level positioning of the onset point of the paroxysmal atrial fibrillation and improve the atrial fibrillation judgment accuracy;
6. compared with the prior art, the paroxysmal atrial fibrillation detection module with the premature beat suppression strategy fused is simpler, quicker and more accurate, does not have a complex machine learning algorithm, and can be quickly transplanted to different mobile terminals for relevant application of mobile medical treatment.
Drawings
Fig. 1 is a diagram of an example of the present invention applied to electrocardiographic signals.
Fig. 2 is a diagram of an embodiment of a wearable pulse collecting device for analyzing pulse signals according to the present invention.
FIG. 3 is a schematic diagram of a pulse signal according to the present invention.
FIG. 4 is a schematic flow chart of the beat-to-beat atrial fibrillation screening unit of the present invention.
Fig. 5 is a schematic flow chart of the premature beat suppression unit according to the present invention.
Fig. 6 is a schematic flow chart of a single premature beat suppression link in the invention.
Fig. 7 is a schematic flow chart of the frequent premature beat suppression link according to the present invention.
FIG. 8 is a schematic flow chart of the linkage-law premature beat suppression link according to the present invention.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and detailed description, which will be understood as being illustrative only and not limiting in scope.
Example 1
Fig. 1 shows an embodiment of a method for detecting paroxysmal atrial fibrillation fused with a premature beat suppression strategy and an electrocardiograph signal monitoring device, comprising: the system comprises an electrocardiosignal acquisition module 1, a paroxysmal atrial fibrillation detection module 2 and a display output module 3 which are integrated with a premature beat suppression strategy. The electrocardiosignal acquisition module 1 can be connected with the paroxysmal atrial fibrillation detection module 2 which integrates a premature beat suppression strategy in a wired or wireless mode. The electrocardiosignal acquisition module 1 comprises a dry electrode unit 11 and a signal detection unit 12; one end of the acquisition unit 12 is connected with the dry electrode unit 11, and the other end is connected with the paroxysmal atrial fibrillation detection module 2 fused with the premature beat suppression strategy;
the paroxysmal atrial fibrillation detection module 2 fused with the premature beat suppression strategy is arranged in mobile equipment or a PC (personal computer) and comprises an electrocardiosignal reading unit 21, a signal preprocessing unit 22, a feature extraction unit 23, a beat-by-beat atrial fibrillation screening unit 24, a premature beat suppression unit 25 and a paroxysmal atrial fibrillation statistical unit 26; the electrocardiosignal reading unit 21, the signal preprocessing unit 22, the feature extraction unit 23, the beat-by-beat atrial fibrillation screening unit 24 and the premature beat suppression unit 25 are sequentially connected, one output end of the premature beat suppression unit 25 is connected with the paroxysmal atrial fibrillation statistical unit 26, and the other output end of the premature beat suppression unit is connected with the display output module 3;
the display output module 3 comprises a display interface unit 31, a local storage unit 32 and a data communication unit 33, which are all provided by mobile equipment;
the paroxysmal atrial fibrillation detection method and the electrocardiosignal monitoring device fused with the premature beat inhibition strategy can be used for monitoring atrial fibrillation in real time, can be implemented on mobile equipment such as a mobile phone, a tablet and the like, and can also be implemented at the computer end of a doctor, for example, as shown in figure 1, the long-range analysis data of the paroxysmal atrial fibrillation is displayed, the doctor is assisted to correctly evaluate the atrial fibrillation load and the heart load of a patient with the paroxysmal atrial fibrillation, and a treatment scheme is reasonably designed;
the electrocardiosignal reading unit 21 reads any 6 continuous electrocardiosignals to form an electrocardiosignal segment, and the extracted electrocardiosignals are preprocessed by the electrocardiosignal preprocessing unit 22 to obtain preprocessed signals. The electrocardiosignal feature extraction unit 23 is configured to extract characteristic parameters such as an R-wave position, an RR interval mean value, a standard deviation, and a rhythm change feature of the heart beat to be detected from the preprocessed signal. The beat-by-beat atrial fibrillation screening unit 24 determines a suspected atrial fibrillation heart beat by judging the rhythm variation characteristics; the premature beat suppression unit 25 judges whether the premature beat is a single premature beat, a frequent premature beat or a joint premature beat on the basis of the suspected atrial fibrillation; in the single premature beat inhibition link, the suspicion of atrial fibrillation is kept or deleted by judging whether the duration time of the suspected atrial fibrillation heart beat exceeds 10 beats; in the frequent premature beat inhibition link, suspected atrial fibrillation heartbeats with RR intervals close to the median value (+ -30%) are selected from suspected atrial fibrillation sections to be subjected to rhythm screening to judge that the suspected atrial fibrillation is kept or deleted; in the joint-rate premature beat inhibition link, suspected atrial fibrillation heartbeats with RR intervals larger than 150% of the median are selected from the rest suspected atrial fibrillation segments to be subjected to rhythm screening to judge that the suspected atrial fibrillation is kept or deleted; the paroxysmal atrial fibrillation statistical unit 26 is used for counting the atrial fibrillation detection result every 30 minutes and analyzing the paroxysmal atrial fibrillation;
the display interface unit 31 displays the electrocardiographic waveform and the atrial fibrillation detection result through a screen; the local storage unit 33 is used for locally storing the acquired electrocardiosignals and atrial fibrillation detection results, so that long-term recording and future inquiry are facilitated; the data communication unit 33 may export real-time measurement data or locally stored data to other terminals.
Example 2
Fig. 2 shows an embodiment of a method for detecting paroxysmal atrial fibrillation fused with a premature beat suppression strategy and a wearable pulse signal acquisition device, comprising: the device comprises a pulse signal acquisition module 1, a paroxysmal atrial fibrillation detection module 2 and a display output module 3, wherein the paroxysmal atrial fibrillation detection module is fused with a premature beat suppression strategy. The pulse signal acquisition module 1The pulse signals are acquired through the photoelectric sensor unit 11, so that the noise is low, the structure is simple, the performance is stable, the comfort of the device is improved, and the detection accuracy is ensured; the signal detection unit 12 is used for signal conditioning and analog-to-digital conversion, the paroxysmal atrial fibrillation detection module 2 fused with the premature beat suppression strategy is embedded in the pulse signal acquisition module 1, the pulse signal reading unit 21 of the paroxysmal atrial fibrillation detection module reads the current pulse signals and the first 5 pulse signals in real time to form 6 pulse signal sections, and the extracted pulse signals are preprocessed by the pulse signal preprocessing unit 22 to obtain preprocessed signals. The pulse signal feature extraction unit 23 is configured to extract feature parameters such as a peak position, a peak-to-peak interval mean, and a standard deviation of the pulse wave to be detected from the preprocessed signal. Defining the ratio P of the standard deviation of the peak intervals of n successive pulse peaks to the mean thereofciThe rhythm variation characteristics of the ith pulse wave are described as follows:
a+b+1＝n
in this example, to ensure real-time detection, a is 5, and b is 0; the beat-to-beat atrial fibrillation screening unit 24 determines a suspected atrial fibrillation beat by judging the rhythm variation characteristics; the premature beat suppression unit 25 judges whether the premature beat is a single premature beat, a frequent premature beat or a conjunctive premature beat on the basis of the suspected atrial fibrillation beat; the single premature beat inhibition link determines that the suspected atrial fibrillation is kept or deleted by judging whether the duration time of the suspected atrial fibrillation beats exceeds 10; in the frequent premature beat inhibition link, suspected atrial fibrillation beats with peak-to-peak intervals close to the median value (+ -30%) are selected from the suspected atrial fibrillation segments to be subjected to rhythm screening to judge whether the suspected atrial fibrillation is kept or deleted; in the joint rhythm premature beat inhibition link, suspected atrial fibrillation beats with peak-to-peak intervals larger than 150% of the median are selected from the rest suspected atrial fibrillation segments to be subjected to rhythm screening to judge that the suspected atrial fibrillation is kept or deleted;
as shown in fig. 3, the beat-to-beat atrial fibrillation screening unit 24 determines whether the beat-to-beat atrial fibrillation is suspected to be the beat of the beat-to-beat atrial fibrillation according to whether the rhythm variation characteristic of the pulse wave to be detected is greater than a threshold.
Specifically, fig. 3 includes the steps of:
and 242, judging whether the rhythm change characteristic of the pulse wave to be detected is higher than a threshold value, if so, outputting the current pulse wave to be detected as suspected atrial fibrillation pulsation, and if not, outputting the current pulse wave to be detected as a normal pulse wave.
As shown in fig. 4, the premature beat suppression unit 25 includes a single premature beat suppression link, a frequent premature beat suppression link, and a conjunctive premature beat suppression link.
Specifically, as shown in fig. 6, the steps:
step 252-1, reselecting suspected atrial fibrillation beats in the suspected atrial fibrillation segment whose peak-to-peak interval is close to the median value (70% -130%);
step 252-2, calculating the rhythm change characteristics of the screened possible pulse waves again;
and 252-3, judging whether the suspected segment rhythm variation characteristics are still larger than a threshold value at the moment, if so, entering a step 253, and if not, judging that premature beat is frequently generated and deleting the suspected current segment atrial fibrillation suspicion.
And step 253, judging whether the current suspected atrial fibrillation segment is the rhythm of the conjunctive premature beat.
Specifically, as shown in fig. 7:
step 253-1, reselecting suspected atrial fibrillation beats with the peak-to-peak interval larger than 150% of the median value in the suspected atrial fibrillation segment;
step 253-2, calculating the rhythm change characteristics of the screened possible pulse waves again;
and 253-3, judging whether the suspected segment rhythm change characteristics are still larger than a threshold value at the moment, if so, confirming that the suspected segment is atrial fibrillation rhythm, and if not, judging that the joint rhythm premature beat is not atrial fibrillation rhythm.
And the paroxysmal atrial fibrillation statistical unit 26 is used for counting the atrial fibrillation detection result every 30 minutes and analyzing the paroxysmal atrial fibrillation.
Real-time atrial fibrillation monitoring results and long-range analysis reports are sent to the screen through the display interface unit 31 of the data transmission module 3 to give an alarm in real time, so that a patient can find symptoms in time; the monitoring data is stored locally through the local storage unit 32, so that long-term recording and future inquiry are facilitated.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (9)
1. A paroxysmal atrial fibrillation detection device fused with a premature beat suppression strategy is characterized by comprising: the premature beat suppression system comprises a physiological signal acquisition module, a premature beat detection module fused with a premature beat suppression strategy and a display output module, wherein the premature beat detection module fused with the premature beat suppression strategy can be implemented in an internal system of the physiological signal acquisition module and an external mobile platform, and real-time atrial fibrillation rhythm detection and early warning are realized through wired or wireless transmission.
2. The device for detecting paroxysmal atrial fibrillation fused with the premature beat suppression strategy as claimed in claim 1, wherein the physiological signal acquisition module comprises a sensor unit and a signal detection unit.
3. The device for detecting paroxysmal atrial fibrillation fused with the premature beat suppression strategy according to claim 2,
the sensor unit can select sensors for measuring different physiological signals according to implementation conditions, wherein the sensors comprise pulse signals, electrocardio signals or other physiological signals capable of extracting rhythm characteristics;
the signal detection unit is used for conditioning the physiological signals detected by the sensor unit, including amplification and shaping, converting the conditioned analog signals into digital signals, and inputting the digital signals into the paroxysmal atrial fibrillation detection module fused with the premature beat suppression strategy.
4. The device for detecting the paroxysmal atrial fibrillation fused with the premature beat suppression strategy according to claim 1, wherein the module for detecting the paroxysmal atrial fibrillation fused with the premature beat suppression strategy comprises a signal reading unit, a signal preprocessing unit, a feature extraction unit, a beat-by-beat atrial fibrillation screening unit, a premature beat suppression unit and a paroxysmal atrial fibrillation statistic unit.
5. The device for detecting paroxysmal atrial fibrillation fused with the premature beat suppression strategy according to claim 4,
the signal reading unit reads a signal section consisting of continuous n-time pulse signals collected by the physiological signal collecting module;
the signal preprocessing unit is used for preprocessing the read signal section, including denoising and characteristic point detection, and acquiring a preprocessed signal;
the physiological signal characteristic extraction unit is used for extracting beat interval and other rhythm characteristic parameters from the preprocessed signal;
the beat-to-beat atrial fibrillation screening unit determines whether the beat-to-beat atrial fibrillation is suspected according to whether the current rhythm change characteristics meet a first judgment condition;
the premature beat suppression unit comprises a single premature beat suppression link, a frequent premature beat suppression link and a joint-law premature beat suppression link;
the paroxysmal atrial fibrillation statistical unit periodically counts real-time detection atrial fibrillation results and analyzes paroxysmal atrial fibrillation conditions.
6. The device for detecting paroxysmal atrial fibrillation fused with the premature beat suppression strategy according to claim 1,
the rhythm variation characteristic refers to the ratio of the standard deviation of continuous n beat intervals read by the physiological signal reading unit to the average value thereof; the first judgment condition includes: and judging whether the rhythm change characteristic is larger than a threshold value, if so, determining the pulse to be detected as a suspected atrial fibrillation pulse, and if not, determining the pulse to be detected as a non-atrial fibrillation pulse.
7. The device for detecting the paroxysmal atrial fibrillation fused with the premature beat suppression strategy as claimed in claim 1, wherein the single-premature beat suppression link determines whether the single-premature beat rhythm exists according to whether the duration number of the suspected atrial fibrillation beats meets a second judgment condition; the second determination condition includes: judging whether the number of the suspected atrial fibrillation beats is less than a threshold value m; if yes, further judging whether the rhythm change characteristics of the suspected atrial fibrillation beat meet a third judgment condition, determining whether the suspected atrial fibrillation beat meets the third judgment condition, if not, judging that the suspected atrial fibrillation beat is a single premature beat, and deleting the suspicion of atrial fibrillation; the threshold value m is larger than the number n of the beat intervals used for calculating the rhythm change characteristics, and is selected according to the specific precision requirement; the suspected atrial fibrillation beats with the duration time being more than m form a suspected atrial fibrillation section; the frequent premature beat suppression link judges whether the suspected atrial fibrillation segment meets a third judgment condition and determines whether frequent premature beats exist; the third determination condition includes: reselecting the suspected atrial fibrillation beats with the beat interval close to the median value in the suspected atrial fibrillation segment, performing rhythm screening again, judging whether the suspected atrial fibrillation segment still has rhythm change characteristics larger than the threshold value, if so, further judging whether the rhythm change characteristics of the suspected atrial fibrillation segment meet a fourth judgment condition, if not, judging that premature beat is frequently generated, and deleting the suspicion of atrial fibrillation; the linkage premature beat inhibition link determines whether the linkage premature beat is the linkage premature beat according to whether the suspected atrial fibrillation segment meets a fourth judgment condition; the fourth determination condition includes: reselecting suspected atrial fibrillation beats with larger beat intervals in the remaining suspected atrial fibrillation segments, and carrying out rhythm screening again; and judging whether the suspected atrial fibrillation segment still has rhythm variation characteristics larger than a threshold value, if so, determining the suspected atrial fibrillation segment as the atrial fibrillation segment, and if not, determining the suspected atrial fibrillation segment as the union premature beat and determining the suspected atrial fibrillation segment as the non-atrial fibrillation segment.
8. The paroxysmal atrial fibrillation detection apparatus integrating with the premature beat suppression strategy as claimed in claim 1, wherein the display output module comprises a display interface unit, a local storage unit and a data communication unit.
9. The device for detecting paroxysmal atrial fibrillation fused with the premature beat suppression strategy according to claim 8,
the display interface unit displays and alarms the real-time physiological signal waveform and the atrial fibrillation detection result through a screen, so that the patient can know the heart condition in real time and see a doctor in time; meanwhile, a long-range analysis report of paroxysmal atrial fibrillation is displayed, so that the illness state of a patient can be conveniently analyzed;
the local storage unit is used for storing the acquired physiological signals and atrial fibrillation detection results locally, so that long-term recording and future inquiry are facilitated, data support is provided for later evaluation of cardiac burden changes of patients, and reference is provided for doctors to reasonably design treatment schemes;
the data communication unit is communicated with external equipment in a wired or wireless mode, and sends the acquired physiological signals and atrial fibrillation detection results to other terminals.
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