Static magnetic type lead electrode rapid positioning vest structure

Abstract

The invention discloses a static magnetic type lead electrode rapid positioning vest structure which comprises a vest body, a magnetic type lead electrode assembly and a signal transmission module. The vest body is made of an elastic breathable material, a plurality of electrode positioning areas are arranged on the chest and the back, and each area corresponds to a standard electrocardiogram lead position; the magnetic type lead electrode assembly comprises a magnetic type electrode plate and an electrode connecting line, a magnetic adsorption sheet is arranged on the back surface of the magnetic type electrode plate and can be adsorbed on the electrode positioning area, one end of the electrode connecting line is connected with the magnetic type electrode plate, and the other end of the electrode connecting line is connected with the signal transmission module; the signal transmission module integrates a wireless transmission unit and a wired transmission interface and is used for transmitting the electrocardiosignal to external equipment; the problems that a traditional electrocardiograph is numerous in lead wires, prone to winding, limited in length, prone to interface damage, tedious in collection operation, greatly affected by limb shaking of a patient and the like are solved, and rapid, accurate and convenient electrocardiosignal collection is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a static magnetic lead electrode rapid positioning vest structure. Background Art

[0002] In modern medical diagnosis, electrocardiogram (ECG) examinations are an important means of assessing cardiac function. However, due to the presence of various electromagnetic interferences in the detection environment and the limited signal processing capabilities of traditional equipment, the collected ECG signals are often contaminated with a large amount of noise, making it difficult to accurately extract key waveform features, which brings difficulties to subsequent disease analysis.

[0003] From the perspective of wearing experience and ease of use, the lead wire layout of traditional ECG detection equipment is complex, not only easily tangled with each other, but also increases the difficulty of operation and preparation time; in addition, when collecting ordinary 18-lead ECGs, the positions of V1-V6 need to be manually replaced with V3R-V5R and V7-V9. This process is cumbersome and not only labor-intensive, but may also lead to large errors in the collected ECG data due to inaccurate positioning; at the same time, traditional ECG collection relies on the fixed position and integrity of the lead wires. For Parkinson's patients and patients with limb defects, limb shaking can easily cause lead wire displacement or poor contact, further affecting the accuracy of the data. Summary of the Invention

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a static magnetic lead electrode rapid positioning vest structure to solve the problems of traditional electrocardiographs such as numerous lead wires, easy entanglement, limited length, easy damage to interfaces, cumbersome collection operations, and great influence from patient limb shaking, so as to achieve fast, accurate and convenient ECG signal collection.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A static magnetic lead electrode rapid positioning vest structure, comprising a vest body, a magnetic lead electrode assembly and a signal transmission module;

[0007] The vest body is made of elastic and breathable material, and multiple electrode positioning areas are provided on the chest and back. Each area corresponds to the standard electrocardiogram lead position. The electrode positioning areas of the vest body include the V1-V6, V3R-V5R lead areas on the chest and the V7-V9 lead areas on the back.

[0008] The magnetic lead electrode assembly includes a magnetic electrode sheet and an electrode connecting wire. The back of the magnetic electrode sheet is provided with a magnetic adsorption sheet that can be adsorbed on the electrode positioning area. One end of the electrode connecting wire is connected to the magnetic electrode sheet, and the other end is connected to the signal transmission module. The electrode connecting wire is made of elastic material.

[0009] The signal transmission module integrates a wireless transmission unit and a wired transmission interface, and is used to transmit the electrocardiogram signal to an external device.

[0010] Preferably, a signal processing unit is provided in the signal transmission module, and the signal processing unit uses an adaptive filtering algorithm to process the collected ECG signal, specifically:

[0011] Suppose the original ECG signal is x(n), the interference signal is v(n), the desired signal is d(n), and the output of the adaptive filter is y(n). Using the minimum mean square error criterion, the filter coefficient w(n) is updated according to the formula w(n+1)=w(n)+2μe(n)x(n), where μ is the step size factor and e(n)=d(n)-y(n) is the error signal. This effectively suppresses noise interference and improves the quality of ECG signals.

[0012] Preferably, the signal processing unit further uses a wavelet transform algorithm to extract features from the filtered ECG signal. The specific formula is:

[0013] Assume that the pressure sensing element collects N pressure data p1, p2, ... p in unit time T. n , calculate the standard deviation of the pressure data

[0014]

[0015] Among them, a is the scale parameter used to adjust the expansion and contraction of the wavelet function, b is the translation parameter used to adjust the translation of the wavelet function, x(t) is the filtered ECG signal, and ψ(t) is the mother wavelet function. By analyzing the wavelet coefficients of different scales and positions, the characteristic waveforms in the ECG signal, such as P wave, QRS complex, and T wave, are extracted for subsequent analysis of arrhythmias and other diseases.

[0016] Preferably, the edge of the vest body is provided with adjustable Velcro for adjusting the tightness of the vest according to the patient's body shape.

[0017] Preferably, the surface of the electrode positioning area is provided with a conductive coating or a conductive fiber layer, which forms a conductive connection with the magnetic electrode sheet. The magnetic electrode sheet is made of a flexible conductive material, and the magnetic adsorption sheet on the back is a neodymium iron boron magnet.

[0018] Preferably, the wireless transmission unit is a Bluetooth module or a Wi-Fi module, and the wired transmission interface is a micro USB interface or a Type-C interface.

[0019] Preferably, a pressure sensing element is provided between the magnetic electrode sheet and the electrode positioning area, for detecting the adsorption state of the electrode sheet and feeding back to an external device.

[0020] Preferably, based on the data detected by the pressure sensing element, an adsorption stability evaluation algorithm is used to determine the adsorption state of the electrode sheet, and the formula is as follows:

[0021] Assume that the pressure sensing element collects N pressure data p1, p2, ... p in unit time T. n , calculate the standard deviation of the pressure data

[0022]

[0023] in, is the average pressure value; set the stability threshold σ th , when σ≥σ th When the electrode is not adsorbed, it is determined that the adsorption of the electrode is unstable and an alarm is issued through an external device so that the position of the electrode can be adjusted in time to ensure the accuracy of ECG signal collection.

[0024] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0025] The present invention uses an adaptive filtering algorithm and a wavelet transform algorithm in the signal processing unit within the signal transmission module to perform in-depth processing on the collected ECG signals. The adaptive filtering algorithm can automatically adjust the filter coefficient according to the signal environment, effectively suppressing noise interference and improving signal purity. The wavelet transform algorithm can accurately extract characteristic waveforms such as P waves, QRS complexes, and T waves from the ECG signals, facilitating more accurate analysis of cardiac electrical activity, improving the ability to diagnose arrhythmias and other conditions, and enhancing the reliability of test results.

[0026] The vest is made of an elastic, breathable material with adjustable Velcro, allowing for flexible adjustment to the patient's body shape, ensuring comfort for extended wear. The magnetic electrodes are quickly attached to the electrode positioning area via a magnetic adsorption device, simplifying the electrode installation process and reducing operation time. Furthermore, the elastic and retractable material of the electrode connecting wires adapts to the patient's movements, allowing them to move more freely during testing and optimizing the overall user experience.

[0027] In the present invention, the pressure sensing element between the magnetic electrode sheet and the electrode positioning area, combined with the adsorption stability evaluation algorithm, can monitor the adsorption status of the electrode sheet in real time; when it is detected that the adsorption of the electrode sheet is unstable, the system will promptly issue an alarm prompt, which is convenient for medical staff or patients to adjust the position of the electrode sheet in time, avoiding the impact of problems such as loosening or displacement of the electrode sheet on the quality of ECG signal acquisition, and ensuring the stability and continuity of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0029] Figure 1 This is a schematic diagram of the system flow structure of a static magnetic lead electrode rapid positioning vest structure proposed by the present invention.

[0030] Description of reference numerals:

[0031] 1. Vest body; 2. Magnetic electrode sheet; 3. Magnetic adsorption sheet. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] Reference Figure 1 , a static magnetic lead electrode rapid positioning vest structure, including a vest body 1, a magnetic lead electrode assembly and a signal transmission module;

[0035] The vest body 1 is made of elastic and breathable material, and is provided with multiple electrode positioning areas on the chest and back, each area corresponding to the standard electrocardiogram lead position. The electrode positioning areas of the vest body 1 include the V1-V6, V3R-V5R lead areas on the chest and the V7-V9 lead areas on the back;

[0036] Electrode positioning areas include:

[0037] Anterior chest electrodes: standard limb lead electrodes RA, LA, LF and chest lead electrodes V1-V6, a total of 9 electrodes, of which RA is located at the lower edge of the right clavicle midpoint, LA is located at the lower edge of the left clavicle midpoint, LF is located in the left lower abdomen, V1-V6 correspond to the fourth intercostal space on the right sternum, the fourth intercostal space on the left sternum, the midpoint of the line connecting V2 and V4, the fifth intercostal space on the left midclavicular line, the left anterior axillary line at the level of V4, and the left midaxillary line at the level of V4, respectively;

[0038] Back electrodes: V3R-V5R, V7-V9 electrodes for 18-lead scenarios, a total of 6 electrodes, corresponding to the right chest wall and the symmetrical position of V3-V5, the left posterior axillary line V4 level, the left scapular line V4 level, and the left paraspinal line V4 level;

[0039] The device can acquire 18-lead ECG signals synchronously with just one wear, eliminating the need to manually switch lead positions. This solves the tedious manual positioning of leads such as V3R-V5R and V7-V9 in traditional 18-lead testing.

[0040] The magnetic lead electrode assembly includes a magnetic electrode sheet 2 and an electrode connecting wire. The back of the magnetic electrode sheet 2 is provided with a magnetic adsorption sheet 3, which can be adsorbed on the electrode positioning area. One end of the electrode connecting wire is connected to the magnetic electrode sheet 2, and the other end is connected to the signal transmission module. The electrode connecting wire is made of elastic material.

[0041] The signal transmission module integrates a wireless transmission unit and a wired transmission interface, and is used to transmit the electrocardiogram signal to an external device.

[0042] The signal transmission module is provided with a signal processing unit, which processes the collected ECG signals using an adaptive filtering algorithm, specifically:

[0043] Suppose the original ECG signal is x(n), the interference signal is v(n), the desired signal is d(n), and the output of the adaptive filter is y(n). Using the minimum mean square error criterion, the filter coefficient w(n) is updated according to the formula w(n+1)=w(n)+2μe(n)x(n), where μ is the step size factor and e(n)=d(n)-y(n) is the error signal. This effectively suppresses noise interference and improves the quality of ECG signals.

[0044] The signal processing unit also uses a wavelet transform algorithm to extract features from the filtered ECG signal. The specific formula is:

[0045] Assume that the pressure sensing element collects N pressure data p1, p2, ... p in unit time T. n , calculate the standard deviation of the pressure data

[0046]

[0047] Among them, a is the scale parameter used to adjust the expansion and contraction of the wavelet function, b is the translation parameter used to adjust the translation of the wavelet function, x(t) is the filtered ECG signal, and ψ(t) is the mother wavelet function. By analyzing the wavelet coefficients of different scales and positions, the characteristic waveforms in the ECG signal, such as P wave, QRS complex, and T wave, are extracted for subsequent analysis of arrhythmias and other diseases.

[0048] The edge of the vest body 1 is provided with adjustable Velcro for adjusting the tightness of the vest according to the patient's body shape.

[0049] The surface of the electrode positioning area is provided with a conductive coating or a conductive fiber layer, which forms a conductive connection with the magnetic electrode sheet 2. The magnetic electrode sheet 2 is made of a flexible conductive material, and the magnetic adsorption sheet 3 on the back is a neodymium iron boron magnet.

[0050] The wireless transmission unit is a Bluetooth module or a Wi-Fi module, and the wired transmission interface is a micro USB interface or a Type-C interface.

[0051] A pressure sensing element is provided between the magnetic electrode sheet 2 and the electrode positioning area, for detecting the adsorption state of the electrode sheet and feeding back to an external device.

[0052] Based on the data detected by the pressure sensing element, the adsorption stability evaluation algorithm is used to judge the adsorption state of the electrode sheet. The formula is as follows:

[0053] Assume that the pressure sensing element collects N pressure data p1, p2, ... p in unit time T. n , calculate the standard deviation of the pressure data

[0054]

[0055] in, is the average pressure value; set the stability threshold σ th , when σ≥σ th When the electrode is not adsorbed, it is determined that the adsorption of the electrode is unstable and an alarm is issued through an external device so that the position of the electrode can be adjusted in time to ensure the accuracy of ECG signal collection.

[0056] In the present invention, signal processing: the electrocardiographic signal collected by the magnetic electrode sheet 2 is transmitted to the signal processing unit of the signal transmission module via the electrode connecting line. First, the adaptive filtering algorithm processes the original electrocardiographic signal x(n). According to the interference signal v(n) and the desired signal d(n), the filter coefficient w(n) is continuously updated according to the formula w(n+1)=w(n)+2μe(n)x(n), where μ is the step size factor and e(n)=d(n)-y(n) is the error signal. The noise is effectively suppressed through iterative calculation to obtain the filtered signal. Then, the wavelet transform algorithm extracts features from the filtered signal. By adjusting the scale parameter a and the translation parameter b, the formula is used:

[0057]

[0058] Analyze wavelet coefficients at different scales and positions to accurately extract characteristic waveforms such as P wave, QRS complex, and T wave; the processed signals are transmitted to external devices via wireless transmission units or wired transmission interfaces for storage and further analysis;

[0059] Adsorption state monitoring: The pressure sensing element collects the pressure data between the magnetic electrode sheet 2 and the electrode positioning area in real time, and collects N pressure data p1, p2, ... p in unit time T. n , through the formula Calculate the standard deviation of the pressure data, where is the average pressure value; the calculated standard deviation σ is compared with the set stability threshold σ th For comparison, when σ≥σ th When the electrode adsorption is determined to be unstable, the system will issue an alarm through an external device to remind the user to adjust the electrode position in time to ensure the accuracy and stability of ECG signal acquisition.

[0060] Example 2

[0061] A hospital outpatient department selected 50 patients who needed electrocardiograms for routine physical examinations or mild heart discomfort. Medical staff fitted each patient with the static magnetic lead electrode quick positioning vest of the present invention.

[0062] When wearing the vest, adjust the Velcro on the edge of the vest body 1 according to the patient's body shape to make the vest fit comfortably. Then, quickly attach the magnetic electrode pads 2 to the corresponding electrode positioning area of the vest. The entire installation process takes an average of only 1 minute, which is about 70% shorter than the traditional manual placement of electrode pads.

[0063] During the signal acquisition process, the signal processing unit uses an adaptive filtering algorithm to effectively suppress the electromagnetic interference generated by electronic equipment in the hospital environment, reducing the noise interference in the original ECG signal by approximately 85%. After processing with the wavelet transform algorithm, characteristic waveforms such as the P wave, QRS complex, and T wave are accurately extracted, providing doctors with clear and accurate ECG data for diagnosis. After acquisition, the ECG signal is wirelessly transmitted to the hospital's ECG diagnostic system via a Bluetooth module. The entire detection process takes an average of 5 minutes, which is about 40% more efficient than traditional ECG detection. Based on the test results, doctors accurately diagnosed three patients with minor heart problems such as sinus arrhythmia. The diagnostic results were consistent with the results of subsequent further examinations, verifying the efficiency and accuracy of the present invention in routine ECG detection of ordinary patients.

[0064] Example 3

[0065] In the neurology ward, 10 Parkinson's patients were selected and required to undergo 24-hour continuous ECG monitoring. The patients were fitted with the vests of the present invention. Since Parkinson's patients have involuntary tremors in their limbs, the medical staff ensured that the vests fit the patients' bodies tightly and checked the adsorption of the magnetic electrode sheet 2.

[0066] During the 24-hour monitoring process, the pressure sensing element collected real-time pressure data between the electrode and the electrode positioning area. Using the adsorption stability assessment algorithm, a total of 15 instances of unstable electrode adsorption were detected, prompting the system to issue an alarm. Medical staff quickly adjusted the electrode position for the patient based on the prompts, ensuring the continuity and stability of ECG signal acquisition. During this period, the adaptive filtering algorithm continuously processed the collected ECG signals, effectively filtering out artifacts caused by the patient's limb shaking, ensuring that the ECG signal quality remained in good condition.

[0067] After the 24-hour monitoring, the stored ECG data was transmitted to the computer analysis software via the Type-C interface. After analysis by professional doctors, the paroxysmal ventricular premature beats that occurred in two patients at night were successfully captured, providing a key basis for the formulation of subsequent treatment plans. When using traditional ECG monitoring equipment to monitor similar patients, it is often difficult to obtain complete and accurate long-term ECG data due to problems such as electrode displacement and signal interference. In comparison, the present invention shows significant advantages in long-term ECG monitoring of special patients.

[0068] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

[0069] The above-described embodiments merely represent several implementation methods of the embodiments of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the concept of the embodiments of the present application, and these modifications and improvements fall within the scope of protection of the embodiments of the present application.

Claims

1. A static magnetic lead electrode rapid positioning vest structure, characterized in that: It comprises a vest body (1), a magnetic lead electrode assembly and a signal transmission module; The vest body (1) is made of elastic and breathable material, and is provided with a plurality of electrode positioning areas on the front chest and back, each area corresponding to a standard electrocardiogram lead position, and the electrode positioning areas of the vest body (1) include the V1-V6, V3R-V5R lead areas on the front chest and the V7-V9 lead areas on the back; The magnetic lead electrode assembly comprises a magnetic electrode sheet (2) and an electrode connecting wire. The magnetic electrode sheet (2) is provided with a magnetic adsorption sheet (3) on the back thereof, which can be adsorbed on the electrode positioning area. One end of the electrode connecting wire is connected to the magnetic electrode sheet (3), and the other end is connected to the signal transmission module. The electrode connecting wire is made of elastic material. The signal transmission module integrates a wireless transmission unit and a wired transmission interface, and is used to transmit the electrocardiogram signal to an external device.

2. The static magnetic lead electrode rapid positioning vest structure according to claim 1, characterized in that: The signal transmission module is provided with a signal processing unit, which processes the collected ECG signals using an adaptive filtering algorithm, specifically: Suppose the original ECG signal is x(n), the interference signal is v(n), the desired signal is d(n), and the output of the adaptive filter is y(n). Using the minimum mean square error criterion, the filter coefficient w(n) is updated according to the formula w(n+1)=w(n)+2μe(n)x(n), where μ is the step size factor and e(n)=d(n)-y(n) is the error signal. This effectively suppresses noise interference and improves the quality of ECG signals.

3. The static magnetic lead electrode rapid positioning vest structure according to claim 2, characterized in that: The signal processing unit also uses a wavelet transform algorithm to extract features from the filtered ECG signal. The specific formula is: Among them, a is the scale parameter used to adjust the expansion and contraction of the wavelet function, b is the translation parameter used to adjust the translation of the wavelet function, x(t) is the filtered ECG signal, and ψ(t) is the mother wavelet function. By analyzing the wavelet coefficients of different scales and positions, the characteristic waveforms in the ECG signal, such as P wave, QRS complex, and T wave, are extracted for subsequent analysis of arrhythmias and other diseases.

4. The static magnetic lead electrode rapid positioning vest structure according to claim 1, characterized in that: The edge of the vest body is provided with an adjustable Velcro (4) for adjusting the tightness of the vest according to the patient's body shape.

5. The static magnetic lead electrode rapid positioning vest structure according to claim 1, characterized in that: The surface of the electrode positioning area is provided with a conductive coating or a conductive fiber layer, forming a conductive connection with the magnetic electrode sheet (2); the magnetic electrode sheet (2) is made of a flexible conductive material, and the magnetic adsorption sheet (3) on the back is a neodymium iron boron magnet.

6. The static magnetic lead electrode rapid positioning vest structure according to claim 1, characterized in that: The wireless transmission unit is a Bluetooth module or a Wi-Fi module, and the wired transmission interface is a micro USB interface or a Type-C interface.

7. A static magnetic lead electrode rapid positioning vest structure according to any one of claims 1 to 6, characterized in that: A pressure sensing element is provided between the magnetic electrode sheet (2) and the electrode positioning area, for detecting the adsorption state of the electrode sheet and feeding back to an external device.

8. The static magnetic lead electrode rapid positioning vest structure according to claim 7, characterized in that: Based on the data detected by the pressure sensing element, the adsorption stability evaluation algorithm is used to judge the adsorption state of the electrode sheet. The formula is as follows: Assume that the pressure sensing element collects N pressure data p1, p2, ... p in unit time T. n , calculate the standard deviation of the pressure data in, is the average pressure value; set the stability threshold σ th , when σ≥σ th When the electrode is not adsorbed, it is determined that the adsorption of the electrode is unstable and an alarm is issued through an external device so that the position of the electrode can be adjusted in time to ensure the accuracy of ECG signal collection.

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