Magnetic type electrocardio electrode

Abstract

The application relates to a magnetic type electrocardio electrode, which comprises an electrode patch and a magnetic electrocardio electrode device, the electrode patch comprises a patch body, a conductive sheet and a metal electrode buckle, the conductive sheet is fixedly connected with the patch body, the metal electrode buckle is arranged on the side of the patch body far from the conductive sheet, the magnetic electrocardio electrode device comprises a buckle seat and a magnetic ring, a wire is used for electrically connecting with an electrocardio device, a clamping groove is arranged in the bottom of the buckle seat, grooves are arranged in the inner side walls of the opposite sides of the clamping groove, one end of the magnetic ring is fixedly connected with a reset spring, the end of the reset spring far from the magnetic ring is fixedly connected with the bottom wall of the groove, when the top wall of the clamping groove of the buckle seat abuts against the metal electrode buckle, the magnetic ring has magnetism when being electrified, the magnetic ring is adsorbed to the side wall of the metal electrode buckle, when the magnetic ring is powered off, the magnetic ring loses magnetism and is located in the groove. The application has the effects of facilitating medical staff to perform electrocardio detection operation on patients and improving the experience effect of the patients.

Description

Technical Field

[0001] This application relates to the technical field of electrocardiogram (ECG) acquisition, and in particular to a magnetic ECG electrode. Background Technology

[0002] In the medical field, cardiovascular disease is one of the major diseases affecting humans, accounting for a high percentage of deaths and posing a significant threat to human health. Electrocardiography (ECG) plays an important role in the diagnosis of cardiovascular diseases. ECG uses electrodes attached to the body surface to collect electromyographic signals of the heart's activity changes during each cardiac cycle. These signals are then plotted into a graph using an electrocardiogram (ECG) device.

[0003] Currently, most cardiac electrodes in electrode pads are snap-on electrodes. Generally, a snap-on spring is embedded in the electrode tip to secure the cardiac electrode to the electrode pad. During use, the electrode is attached to the corresponding measurement point on the patient's body, and then the cardiac electrode is snapped onto the metal protrusion on the electrode pad. The electrode pad can then transmit electrical signals to the cardiac device through the cardiac electrode, and the cardiac device can draw an electrocardiogram based on the electromyographic signals.

[0004] Regarding the aforementioned technologies, the inventors believe that in existing ECG tests, medical staff need to press the cardiac electrodes each time, causing the patient to experience a pressure sensation. After the test, when removing the electrodes, it is necessary to press them again to remove them from the electrode pads. The patient experiences pressure twice during the entire ECG examination, resulting in a poor experience for the patient and inconvenience for medical staff. Furthermore, the button-type cardiac electrodes require a pressing method to connect the electrode pads to the ECG device, but this pressing method can easily cause unstable electromyographic signal transmission, leading to inaccurate ECG readings and affecting the accuracy of the ECG test results. Therefore, there is room for improvement. Summary of the Invention

[0005] To improve the accuracy of electrocardiogram (ECG) test results, facilitate ECG testing for medical staff, and enhance the patient experience, this application provides a magnetic ECG electrode and its method.

[0006] This application provides a magnetic electrocardiogram electrode, which adopts the following technical solution:

[0007] A magnetic electrocardiogram (ECG) electrode includes an electrode patch and a magnetic ECG electrode device. The electrode patch includes a patch body, a conductive sheet, and a metal electrode clip. The conductive sheet is fixedly connected to the patch body. The metal electrode clip is disposed on the side of the patch body away from the conductive sheet. The magnetic ECG electrode device includes a clip seat and a magnetic ring. A wire is electrically connected to the outer wall of the clip seat for electrical connection with an ECG device. A snap-fit ​​groove is recessed at the bottom of the clip seat. Grooves are formed on the inner walls of opposite sides of the snap-fit ​​groove. A return spring is fixedly connected to one end of the magnetic ring. The end of the return spring away from the magnetic ring is fixedly connected to the bottom wall of the groove. When the top wall of the snap-fit ​​groove of the clip seat abuts against the metal electrode clip, the magnetic ring is energized and becomes magnetic, attracting the side wall of the metal electrode clip. When the magnetic ring is de-energized, it loses its magnetism and remains in the groove.

[0008] By adopting the above technical solution, when performing electrocardiogram (ECG) testing on a patient, the patch body is attached to the patient's body surface, and the latch of the magnetic electrocardiogram electrode device is placed on the metal electrode latch, with the metal electrode latch positioned in the latching groove of the latching groove and abutting against the top wall of the groove. When the magnetic ring is energized, it becomes magnetic. Under the magnetic attraction of the magnetic field, the magnetic ring moves towards the metal electrode latch and is attracted to it. The magnetic attraction fixes the magnetic electrocardiogram electrode device to the electrode patch. The electrode patch collects electromyographic (EMG) signals generated by the activity changes of the heart during each cardiac cycle through a conductive sheet. These EMG signals are transmitted to the ECG equipment via the magnetic electrocardiogram electrode device to complete the ECG test. After the ECG test is completed, the... When the magnetic ring is de-energized, it loses its magnetism, and the magnetic attraction between the magnetic ring and the metal electrode clip disappears. Under the elastic potential energy of the return spring, the magnetic ring moves away from the metal electrode clip and into the groove on the inner wall of the locking slot. This releases the magnetic attraction cardiac electrode device from the electrode patch, making it easier for medical staff to remove the device and patch. By using the magnetic ring to magnetically attach to the metal electrode clip, the magnetic attraction cardiac electrode is fixed to the electrode patch, effectively avoiding pressure on the patient, improving the patient's experience, and facilitating ECG testing. This also reduces the risk of unstable electromyographic signal transmission due to pressing the cardiac electrode, thereby improving the accuracy of ECG results and making ECG testing easier for medical staff.

[0009] Preferably, the magnetic core electrode device is provided with a first pressure sensor, which is fixed to the top wall of the snap-fit ​​groove. The first pressure sensor is coupled to a pressure detection circuit for controlling the on / off state of the magnetic ring. The pressure detection circuit is provided with a first pressure threshold. The magnetic ring is an energized magnet. When the first pressure sensor detects that the pressure on the top wall of the snap-fit ​​groove is greater than the first pressure threshold, the pressure detection circuit sends a conduction signal to energize the magnetic ring and make it magnetic. When the magnetic ring is energized and magnetic, it moves toward the direction of the metal electrode snap-fit.

[0010] By adopting the above technical solution and setting a first pressure sensor, when medical staff place the buckle seat of the magnetic magnetic electrode device on the metal electrode buckle, and the metal electrode buckle is located in the snap-fit ​​groove of the buckle seat and abuts against the top wall of the snap-fit ​​groove, the first pressure sensor detects that the top wall of the snap-fit ​​groove is subjected to pressure by the metal electrode buckle. The pressure detection signal emitted by the first pressure sensor increases. When the pressure detection signal is greater than the first pressure threshold, the pressure detection circuit sends a conduction signal to control the magnetic ring to be energized and magnetic. Under the magnetic attraction of the magnetic field, the magnetic ring moves towards the direction of the metal electrode buckle, so that the magnetic ring is magnetically attracted to the outer wall of the metal electrode buckle. This realizes automatic control of the magnetic ring to be magnetically attracted to the metal electrode buckle, so that the magnetic magnetic electrode device is fixedly connected to the electrode patch by magnetic attraction.

[0011] Preferably, the pressure detection circuit includes a first judgment unit and a first control unit. The input terminal of the first judgment unit is coupled to a first pressure sensor to receive a pressure detection signal. The first judgment unit is connected to a first pressure threshold. The output terminal of the first judgment unit is coupled to the first control unit. When the pressure detection signal is greater than the first pressure threshold, the first judgment unit outputs a first judgment signal to the first control unit. The output terminal of the first control unit is coupled to the power supply circuit of the magnetic ring to output a conduction signal to control the magnetic ring to be energized and magnetized when the first judgment signal is received.

[0012] By adopting the above technical solution, the first pressure sensor detects the pressure on the top wall of the card slot in real time and transmits the pressure detection signal to the first judgment unit for signal comparison. When the pressure detection signal is greater than the first pressure threshold, the first judgment unit outputs a first judgment signal to the first control unit. After receiving the first judgment signal, the first control unit outputs a conduction signal to control the magnetic ring to be energized and magnetic. When the pressure detection signal is less than the first pressure threshold, the first judgment unit does not output the first judgment signal, the first control unit does not output a conduction signal, and the magnetic ring is not energized, thus realizing the control of the magnetic ring energization by the pressure detection circuit.

[0013] Preferably, the first determination unit includes a first comparator N1 and a first adjustable resistor RP1. The non-inverting input terminal of the first comparator N1 is coupled to a first pressure sensor, and the inverting input terminal of the first comparator N1 is coupled to the sliding terminal of the first adjustable resistor RP1. One end of the first adjustable resistor RP1 is coupled to a power supply, and the other end of the first adjustable resistor RP1 is grounded. The output terminal of the first comparator N1 is coupled to a first control unit.

[0014] By adopting the above technical solution, the non-inverting input terminal of the first comparator N1 receives the pressure detection signal output by the first pressure sensor, and the inverting input terminal of the first comparator N1 receives the first pressure threshold. The value of the first pressure threshold is set by setting the resistance of the first adjustable resistor RP1. When the pressure detection signal output by the first pressure sensor increases, the non-inverting input terminal of the first comparator N1 receives a high level. The voltage input to the non-inverting input terminal of the first comparator N1 is greater than the voltage input to the inverting input terminal of the first comparator N1, and the output terminal of the first comparator N1 outputs a high level. The first judgment unit outputs a first judgment signal.

[0015] Preferably, the pressure detection circuit further includes a push-button switch unit, which includes a normally closed push-button switch SW1. The normally closed push-button switch SW1 is installed on the electrocardiogram device and is connected in series in the power supply circuit of the magnetic ring. Under normal conditions, the normally closed push-button switch SW1 is in a closed state. When the normally closed push-button switch SW1 is pressed, the normally closed push-button switch SW1 is in an open state. The push-button switch unit outputs a power-off signal to the power supply circuit of the magnetic ring to control the magnetic ring to de-energize and demagnetize.

[0016] By adopting the above technical solution, after medical staff complete the electrocardiogram test on the patient, they press the normally closed push button switch SW1 on the electrocardiogram device to change the normally closed push button switch SW1 from the closed state to the open state, thereby disconnecting the power supply circuit of the magnetic ring, causing the magnetic ring to lose its magnetism, and thus preventing the magnetic ring from being magnetically attracted to the metal electrode clip, making it easier for medical staff to remove the magnetically attracted electrocardiogram electrode device from the metal electrode clip.

[0017] Preferably, the magnetic aspiration electrode device is equipped with an indicator light, which is used to remind medical staff that the magnetic aspiration electrode device and the electrode patch are not completely securely connected. A second pressure sensor is provided on the outer wall of the metal electrode buckle. The second pressure sensor is electrically connected to a pressure detection circuit. The pressure detection circuit is set with a second pressure threshold. When the second pressure sensor detects that the pressure on the metal electrode buckle is less than the second pressure threshold, the pressure detection circuit sends a switch signal to power on the indicator light.

[0018] By adopting the above technical solution, and by setting an indicator light on the magnetic electromyography (EMG) electrode device, when the magnetic ring of the EMG electrode device is not firmly attached to the outer wall of the metal electrode clip, that is, when the EMG electrode device and the electrode patch are not tightly connected, the second pressure sensor detects the pressure applied by the magnetic ring to the outer wall of the metal electrode clip. When the pressure detection signal output by the second pressure sensor is less than the second pressure threshold, the pressure detection circuit sends a switch signal to control the indicator light to be powered on and lit. The indicator light can promptly remind medical staff that the EMG electrode device and the motor patch are not completely tightly connected, thereby effectively preventing unstable transmission of electromyographic signals and effectively improving the accuracy of electrocardiograms.

[0019] Preferably, the pressure detection circuit further includes a logic judgment unit, a second judgment unit, and a second control unit. The input terminal of the second judgment unit is coupled to a second pressure sensor. The second judgment unit is connected to a second pressure threshold. When the pressure detection signal output by the second pressure sensor is less than the second pressure threshold, the second judgment unit outputs a second judgment signal. The first input terminal of the logic judgment unit is coupled to a first judgment unit, and the second input terminal of the logic judgment unit is coupled to the second judgment unit. When the logic judgment unit receives both the first and second judgment signals, it outputs a logic judgment signal. The input terminal of the second control unit is coupled to the logic judgment unit, and the output terminal of the second control unit is coupled to the power supply circuit of the reminder light to output a switch signal to control the reminder light to be powered on and lit when the logic judgment signal is received.

[0020] By adopting the above technical solution, the second pressure sensor detects the pressure on the metal electrode buckle in real time and transmits the pressure detection signal to the second judgment unit for pressure comparison. When the pressure detection signal output by the second pressure sensor is less than the second pressure threshold, the second judgment unit outputs a second judgment signal to the logic judgment unit. The logic judgment unit receives both the first and second judgment signals and then outputs a logic judgment signal. The second control unit receives the logic judgment signal and outputs a switch signal to control the reminder light to be powered on and lit. However, when the pressure detection signal output by the second pressure sensor is greater than the second pressure threshold, the second judgment unit does not output the second judgment signal. Since there is no second judgment signal input, the logic judgment unit does not output a logic judgment signal, and the second control unit does not output a switch signal, thus controlling the reminder light to be de-energized. This realizes the control of the reminder light's power on and off by the pressure detection circuit.

[0021] Preferably, the second judgment unit includes a second comparator N2 and a second adjustable resistor RP2. The inverting input terminal of the second comparator N2 is coupled to a second pressure sensor, and the non-inverting input terminal of the second comparator N2 is coupled to the sliding terminal of the second adjustable resistor RP2. One end of the second adjustable resistor RP2 is coupled to a power supply, and the other end of the second adjustable resistor RP2 is grounded. The output terminal of the second comparator N2 is coupled to a logic judgment unit. The logic judgment unit includes an AND gate. The first signal input terminal of the AND gate is coupled to the output terminal of a first comparator N1, and the second signal input terminal of the AND gate is coupled to the output terminal of the second comparator N2. The output terminal of the AND gate is coupled to a second control unit.

[0022] By adopting the above technical solution, the inverting input terminal of the second comparator N2 receives the pressure detection signal output by the second pressure sensor, and the resistance value of the second adjustable resistor RP2 is set to set the second pressure threshold. The non-inverting input terminal of the second comparator N2 receives the second pressure threshold. When the pressure detection signal output by the second pressure sensor becomes smaller, the inverting input terminal of the second comparator N2 receives a low level. The voltage input to the inverting input terminal of the second comparator N2 is less than the voltage input to the non-inverting input terminal of the second comparator N2, and the output terminal of the second comparator N2 outputs a high level. The second judgment unit outputs a second judgment signal. By using a logic AND gate to simultaneously receive the first judgment signal and the second judgment signal, it is possible to determine whether the magnetic core electrode device and the metal electrode buckle are completely and securely connected when the magnetic core electrode device is placed on the metal electrode buckle.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The metal electrode clip is located in the snap-fit ​​groove of the clip seat, and the metal electrode clip abuts against the top wall of the snap-fit ​​groove. When the magnetic ring is energized, the magnetic ring becomes magnetic. Under the magnetic attraction of the magnetic field, the magnetic ring moves towards the metal electrode clip and is attracted to the metal electrode clip. The magnetic attraction fixes the magnetic electrocardiogram electrode device to the electrode patch, effectively avoiding pressure on the patient, improving the patient's experience, and facilitating the operation of electrocardiogram by medical staff. It also effectively reduces the instability of electromyographic signal transmission caused by pressing the electrocardiogram electrode, thereby improving the accuracy of the electrocardiogram test results and facilitating the operation of electrocardiogram by medical staff.

[0025] 2. By setting a first pressure sensor, the first pressure sensor detects that the top wall of the snap-fit ​​groove is subjected to pressure by the metal electrode snap-fit. When the metal electrode snap-fit ​​abuts against the top wall of the snap-fit ​​groove, the pressure detection circuit sends a conduction signal to control the magnetic ring to be energized and magnetic. Under the magnetic attraction of the magnetic field, the magnetic ring moves towards the direction of the metal electrode snap-fit, so that the magnetic ring is magnetically adsorbed on the outer wall of the metal electrode snap-fit, thereby realizing automatic control of the magnetic ring being magnetically adsorbed on the metal electrode snap-fit.

[0026] 3. After the medical staff completes the ECG test on the patient, press the normally closed push button switch SW1 on the ECG device to change the normally closed push button switch SW1 from the closed state to the open state, so that the power supply circuit of the magnetic ring is disconnected, the magnetic ring loses its magnetism, and thus the magnetic ring will not be magnetically attracted to the metal electrode clip, making it easier for the medical staff to remove the magnetically attracted ECG electrode device from the metal electrode clip.

[0027] 4. By setting an indicator light on the magnetic electromyography (EMG) electrode device, when the magnetic ring of the EMG electrode device is not securely attached to the outer wall of the metal electrode clip, i.e., the EMG electrode device and the electrode patch are not tightly connected, the pressure detection circuit sends a switch signal to control the indicator light to be powered on and lit. The indicator light can promptly remind medical staff that the EMG electrode device and the motor patch are not completely securely connected, thereby effectively preventing unstable transmission of electromyographic signals and effectively improving the accuracy of electrocardiograms. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a magnetic electrocardiogram electrode according to an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view of a magnetic electrocardiogram electrode according to an embodiment of this application.

[0030] Figure 3 This application describes a magnetic electrocardiogram electrode. Figure 2 Enlarged view of part A in the image.

[0031] Figure 4 This is a circuit diagram of a pressure detection circuit for a magnetic electrocardiogram electrode according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Electrode patch; 2. Magnetic core electrode device; 21. Snap-on base; 22. Magnetic ring; 23. Return spring; 3. Indicator light; 4. First pressure sensor; 5. Second pressure sensor; 6. First judgment unit; 7. Second judgment unit; 8. First control unit; 9. Second control unit; 10. Logic judgment unit; 11. Push-button switch unit; 12. Conductive sheet; 13. Metal electrode snap-on. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4This application will be described in further detail.

[0034] This application discloses a magnetic electrocardiogram electrode. (See also...) Figure 1 and Figure 2 A magnetic electrocardiogram (ECG) electrode includes an electrode patch 1 and a magnetically attracted ECG electrode device 2. During ECG testing, the magnetically attracted ECG electrode device 2 is securely connected to the electrode patch 1. The electrode patch 1 includes a patch body, a conductive sheet 12, and a metal electrode clip 13. The magnetically attracted ECG electrode device 2 includes a clip seat 21, the outer wall of which is electrically connected to a wire. The conductive sheet 12 is fixedly connected to the bottom of the patch body, and the metal electrode clip 13 is fixedly installed on the side of the patch body away from the conductive sheet 12. During ECG testing, the magnetically attracted ECG electrode device 2 is securely connected to the metal electrode clip 13. The conductive sheet 12 collects electromyographic (EMG) signals generated by the activity changes of the patient's heart during each cardiac cycle. The EMG signals are transmitted to the magnetically attracted ECG electrode device 2 through the metal electrode clip 13, and then transmitted to the ECG device via a wire.

[0035] The top of the buckle seat 21 is equipped with an indicator light 3. The indicator light 3 is used to remind medical staff whether the magnetic core electrode device 2 and the electrode patch 1 are completely and securely connected. Specifically, when the magnetic core electrode device 2 and the electrode patch 1 are completely and securely connected, the indicator light 3 is powered on and lit.

[0036] Reference Figure 2 and Figure 3 The magnetic electrocardiogram (ECG) electrode device 2 also includes a magnetic ring 22 and a return spring 23. The side of the latch seat 21 that abuts against the metal electrode latch 13 is recessed with a latching groove. The inner walls of the opposite sides of the latching groove are provided with grooves. One end of the magnetic ring 22 is fixedly connected to one end of the return spring 23. The end of the return spring 23 away from the magnetic ring 22 is fixedly connected to the bottom wall of the groove. Under normal conditions, the magnetic ring 22 is located in the groove. When ECG testing is performed, the metal electrode latch 13 abuts against the top wall of the latching groove of the latch seat 21. Under the action of magnetic attraction, the magnetic ring 22 moves towards the metal electrode latch 13 until the magnetic ring 22 is magnetically attracted to the outer wall of the metal electrode latch 13, so that the magnetic electrocardiogram (ECG) electrode device 2 is tightly connected to the metal electrode latch 13.

[0037] Reference Figure 3 and Figure 4A first pressure sensor 4 is provided on one side of the contact surface between the snap-fit ​​groove and the metal electrode buckle 13. The first pressure sensor 4 is electrically connected to a pressure detection circuit for controlling the on and off of the magnetic ring 22. The magnetic ring 22 is an energized and magnetic magnet. The pressure detection circuit is set with a first pressure threshold. Specifically, when the pressure detection signal output by the first pressure sensor 4 is greater than the first pressure threshold, the pressure detection circuit energizes the magnetic ring 22, and the magnetic ring 22 becomes magnetic. When the pressure detection signal output by the first pressure sensor 4 is less than the first pressure threshold, the pressure detection circuit de-energizes the magnetic ring 22, and the magnetic ring 22 becomes non-magnetic.

[0038] The pressure detection circuit includes a first judgment unit 6 and a first control unit 8. The input terminal of the first judgment unit 6 is coupled to the first pressure sensor 4 to receive the pressure detection signal transmitted by the first sensor. Simultaneously, the input terminal of the first judgment unit 6 is also connected to a first pressure threshold. The output terminal of the first judgment unit 6 is coupled to the first control unit 8. The first judgment unit 6 is used to output a first judgment signal to the first control unit 8 when the pressure detection signal output by the first pressure sensor 4 is greater than the first pressure threshold. The first judgment unit 6 includes a first comparator N1 and a first adjustable resistor RP1. The non-inverting input terminal of the first comparator N1 is coupled to the first pressure sensor 4, and the inverting input terminal of the first comparator N1 is coupled to the sliding terminal of the first adjustable resistor RP1. One end of the first adjustable resistor RP1 is coupled to a power supply, and the other end is grounded. The output terminal of the first comparator N1 is coupled to the first control unit 8.

[0039] Specifically, the non-inverting input of the first comparator N1 receives the pressure detection signal output by the first pressure sensor 4, and the inverting input of the first comparator N1 receives the first pressure threshold. When the pressure detection signal output by the first pressure sensor 4 increases, the non-inverting input of the first comparator N1 receives a high level. The voltage input to the non-inverting input of the first comparator N1 is greater than the voltage input to the inverting input of the first comparator N1. The pressure detection signal output by the first pressure sensor 4 is greater than the first pressure threshold, and the output of the first comparator N1 outputs a high level.

[0040] The output terminal of the first control unit 8 is coupled to the power supply circuit of the magnetic ring 22. The first control unit 8 is used to output a conduction signal to control the magnetic ring 22 to be energized and magnetized when it receives the first judgment signal. The first control unit 8 includes an NPN type first transistor Q1 and a first relay KM1. The base of the first transistor Q1 is coupled to the output terminal of the first comparator N1. The collector of the first transistor Q1 is connected in series with the first relay KM1 and then coupled to the power supply. The emitter of the first transistor Q1 is grounded. The first relay KM1 includes a normally open contact switch KM1-1, which is connected in series in the power supply circuit of the magnetic ring 22.

[0041] Specifically, when the first control unit 8 receives the first judgment signal, the base of the NPN type first transistor Q1 is input with a high level, the first transistor Q1 is in a conducting state, the coil of the first relay KM1 is energized, the normally open contact switch KM1-1 is energized and closed, the power supply circuit of the magnetic ring 22 is turned on, and the magnetic ring 22 is energized and becomes magnetic.

[0042] Reference Figure 4 The pressure detection circuit also includes a push-button switch unit 11, which is connected in series in the power supply circuit of the magnetic ring 22. The push-button switch unit 11 includes a normally closed push-button switch SW1, which is installed on the electrocardiogram device and connected in series in the power supply circuit of the magnetic ring 22.

[0043] Specifically, under normal conditions, the normally closed push button switch SW1 is in a closed state, and when the normally closed push button switch SW1 is pressed, the normally closed push button switch SW1 is in an open state.

[0044] Reference Figure 3 and Figure 4 A second pressure sensor 5 is provided on the outer wall where the metal electrode buckle 13 contacts the magnetic ring 22. The second pressure sensor 5 is electrically connected to the pressure detection circuit. The pressure detection circuit is also provided with a second pressure threshold. The pressure detection circuit is also electrically connected to the power supply circuit of the reminder light 3. When the pressure detection signal output by the second pressure sensor 5 is less than the second pressure threshold, the pressure detection circuit powers on the reminder light 3 and illuminates it.

[0045] The pressure detection circuit also includes a logic judgment unit 10, a second judgment unit 7, and a second control unit 9. The input terminal of the second judgment unit 7 is coupled to the second pressure sensor 5. The second judgment unit 7 is also connected to a second pressure threshold. When the pressure detection signal output by the second pressure sensor 5 is less than the second pressure threshold, the second judgment unit 7 outputs a second judgment signal. The second judgment unit 7 includes a second comparator N2 and a second adjustable resistor RP2. The inverting input terminal of the second comparator N2 is coupled to the second pressure sensor 5, and the non-inverting input terminal of the second comparator N2 is coupled to the sliding terminal of the second adjustable resistor RP2. One end of the second adjustable resistor RP2 is coupled to a power supply, and the other end is grounded. The output terminal of the second comparator N2 is coupled to the logic judgment unit 10.

[0046] Specifically, the inverting input of the second comparator N2 receives the pressure detection signal output by the second pressure sensor 5, and the non-inverting input of the second comparator N2 receives the second pressure threshold. When the pressure detection signal output by the second pressure sensor 5 decreases, the inverting input of the second comparator N2 receives a low level. The voltage input to the inverting input of the second comparator N2 is less than the voltage input to the non-inverting input of the second comparator N2, and the output of the second comparator N2 outputs a high level.

[0047] The input terminals of the logic judgment unit 10 are respectively coupled to the first judgment unit 6 and the second judgment unit 7, and the output terminal of the logic judgment unit 10 is coupled to the second control unit 9. The logic judgment is used to output a logic judgment signal to the second control unit 9 when the first judgment signal and the second judgment signal are received simultaneously. The logic judgment unit 10 includes a logic AND gate, which includes a first signal input terminal and a second signal input terminal. The first signal input terminal of the logic AND gate is coupled to the output terminal of the first comparator N1, the second signal input terminal of the logic AND gate is coupled to the output terminal of the second comparator N2, and the output terminal of the logic AND gate is coupled to the second control unit 9.

[0048] Specifically, when both the first and second signal input terminals of the AND gate are high, the output terminal of the AND gate outputs a high level, and the logic judgment unit 10 outputs a logic judgment signal to the second control unit 9.

[0049] The output of the second control unit 9 is coupled to the power supply circuit of the reminder lamp 3. The second control unit 9 is used to output a switch signal to control the reminder lamp 3 to be powered on and lit when it receives a logic judgment signal. The second control unit 9 includes an NPN type second transistor Q2, a second relay KM2, and a thyristor BCR. The base of the second transistor Q2 is coupled to the output of the second comparator N2. The collector of the second transistor Q2 is connected in series with the second relay KM2 and then coupled to the power supply. The emitter of the second transistor Q2 is grounded. The second relay KM2 includes a normally open contact switch KM2-2. The control electrode of the thyristor BCR is coupled to the emitter of the second transistor Q2. One end of the thyristor BCR is connected in series with the normally open contact switch KM2-2 and then coupled to the power supply circuit of the reminder lamp 3. The other end of the thyristor BCR is coupled to the power supply circuit of the reminder lamp 3.

[0050] Specifically, when the second control unit 9 receives the logic judgment signal, the base of the second transistor Q2 is input with a high level, the second transistor Q2 is in a conducting state, the second relay KM2 is energized, the normally open contact switch KM2-2 is energized and closed, the thyristor BCR is turned on, the power supply circuit of the reminder lamp 3 is turned on, and the reminder lamp 3 is energized and lit.

[0051] The implementation principle of a magnetic electrocardiogram electrode according to an embodiment of this application is as follows:

[0052] Before performing an electrocardiogram (ECG) test on a patient, the patch body is attached to the patient's body surface. The latching seat 21 of the magnetic electrocardiogram electrode device 2 is placed on the metal electrode latch 13, so that the metal electrode latch 13 is located in the latching groove of the latching seat 21 and abuts against the top wall of the latching groove. The first pressure sensor 4 detects the pressure applied to the top wall of the latching groove by the metal electrode latch 13, and the pressure detection signal emitted by the first pressure sensor 4 increases. The resistance value of the first adjustable resistor RP1 is set to the value of the first pressure threshold. The non-inverting input terminal of the first comparator N1 of the first judgment unit 6 is input with a high level. The voltage input to the non-inverting input terminal of the first comparator N1 is greater than the voltage input to the inverting input terminal of the first comparator N1. The pressure detection signal output by the first pressure sensor 4 is greater than the first pressure threshold, and the output terminal of the first comparator N1 outputs a high level. When the first judgment unit 6 outputs the first judgment signal, the base of the NPN type first transistor Q1 of the first control unit 8 is input with a high level, the first transistor Q1 is in a conducting state, the coil of the first relay KM1 is energized, the normally open contact switch KM1-1 is energized and closed, the normally closed button switch SW1 of the button switch unit 11 is closed, the power supply circuit of the magnetic ring 22 is turned on, the magnetic ring 22 is energized and has magnetism, under the action of magnetic attraction, the magnetic ring 22 moves towards the direction of the metal electrode buckle 13, and the magnetic ring 22 is attracted to the metal electrode buckle 13 under the action of magnetic attraction, and the magnetic attraction makes the magnetic attraction cardiac electrode device 2 and the electrode patch 1 fixedly connected through the magnetic attraction. The electrode patch 1 collects the electromyographic signals generated by the activity changes of the heart in each cardiac cycle through the conductive sheet 12, and the electromyographic signals are transmitted to the cardiac equipment through the magnetic attraction cardiac electrode device 2.

[0053] The first judgment unit 6 also outputs the first judgment signal to the logic judgment unit 10. When the magnetic ring 22 is magnetically adsorbed onto the outer wall of the metal electrode buckle 13, the second pressure sensor 5 detects the pressure on the metal electrode buckle 13 and sets the resistance value of the second adjustable resistor RP2 to set the second pressure threshold. When the pressure detection signal output by the second pressure sensor 5 is less than the second pressure threshold, the inverting input terminal of the second comparator N2 receives a low level. The voltage input to the inverting input terminal of the second comparator N2 is less than the voltage input to the non-inverting input terminal of the second comparator N2, and the output terminal of the second comparator N2 outputs a high level. The second judgment unit 7 outputs... The second judgment signal is sent to the logic judgment unit 10. When the logic judgment unit 10 receives both the first and second judgment signals, it outputs a high level. The base of the second transistor Q2 of the second control unit 9 is input with a high level, and the second transistor Q2 is in a conducting state. The second relay KM2 is energized, which energizes the normally open contact switch KM2-2 and closes it. The thyristor BCR is turned on, which turns on the power supply circuit of the reminder lamp 3. The reminder lamp 3 is energized and lit. The lighting of the reminder lamp 3 can promptly remind medical staff that the magnetic electromyography electrode device 2 and the motor patch are not completely and securely connected, thereby effectively preventing unstable electromyography signal transmission and effectively improving the accuracy of electrocardiogram.

[0054] After the ECG test is completed, press the normally closed push button switch SW1 on the ECG device. The normally closed push button switch SW1 of the push button switch unit 11 changes from the closed state to the open state, which disconnects the power supply circuit of the magnetic ring 22, causing the magnetic ring 22 to lose its magnetism and thus prevents the magnetic ring 22 from being magnetically attracted to the metal electrode clip 13. Under the action of the elastic potential energy of the return spring 23, the magnetic ring 22 will move away from the metal electrode clip 13 and move into the groove on the inner side wall of the snap-fit ​​groove, thereby releasing the fixed connection between the magnetic attracting cardiac electrode device 2 and the electrode patch 1, making it easier for medical staff to remove the magnetic attracting cardiac electrode device 2 from the electrode patch 1.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A magnetic electrocardiogram electrode, characterized in that: The device includes an electrode patch (1) and a magnetic electrocardiogram (2). The electrode patch (1) includes a patch body, a conductive sheet (12), and a metal electrode clip (13). The conductive sheet (12) is fixedly connected to the patch body. The metal electrode clip (13) is disposed on the side of the patch body away from the conductive sheet (12). The magnetic electrocardiogram (2) includes a clip seat (21) and a magnetic ring (22). A wire is electrically connected to the outer wall of the clip seat (21) for electrical connection with the electrocardiogram device. A snap-fit ​​groove is recessed at the bottom of the clip seat (21). Grooves are formed on the inner walls of the opposite sides of the snap-fit ​​groove. A return spring (23) is fixedly connected to one end of the magnetic ring (22). The end of the return spring (23) away from the magnetic ring (22) is fixedly connected to the bottom wall of the groove. When the top wall of the snap-fit ​​groove of the clip seat (21) abuts against the metal electrode clip... When the snap (13) is engaged, the magnetic ring (22) is energized and becomes magnetic. The magnetic ring (22) is attracted to the side wall of the metal electrode snap (13). When the magnetic ring (22) is de-energized, the magnetic ring (22) loses its magnetism and is located in the groove. The magnetic core electrode device (2) is equipped with a first pressure sensor (4). The first pressure sensor (4) is fixed to the top wall of the snap groove. The first pressure sensor (4) is coupled to a pressure detection circuit for controlling the on and off of the magnetic ring (22). The pressure detection circuit is equipped with a first pressure threshold. The magnetic ring (22) is an energized and magnetic magnet. When the first pressure sensor (4) detects that the pressure on the top wall of the snap groove is greater than the first pressure threshold, the pressure detection circuit sends a conduction signal to make the magnetic ring (22) energized and magnetic. When the magnetic ring (22) is energized and magnetic, it moves toward the metal electrode snap (13).

2. The magnetic electrocardiogram electrode according to claim 1, characterized in that: The pressure detection circuit includes a first judgment unit (6) and a first control unit (8). The input terminal of the first judgment unit (6) is coupled to the first pressure sensor (4) to receive the pressure detection signal. The first judgment unit (6) is connected to a first pressure threshold. The output terminal of the first judgment unit (6) is coupled to the first control unit (8). When the pressure detection signal is greater than the first pressure threshold, the first judgment unit (6) outputs a first judgment signal to the first control unit (8). The output terminal of the first control unit (8) is coupled to the power supply circuit of the magnetic ring (22) to output a conduction signal to control the magnetic ring (22) to be energized and magnetized when the first judgment signal is received.

3. The magnetic electrocardiogram electrode according to claim 2, characterized in that: The first judgment unit (6) includes a first comparator N1 and a first adjustable resistor RP1. The non-inverting input terminal of the first comparator N1 is coupled to the first pressure sensor (4), the inverting input terminal of the first comparator N1 is coupled to the sliding terminal of the first adjustable resistor RP1, one end of the first adjustable resistor RP1 is coupled to the power supply, the other end of the first adjustable resistor RP1 is grounded, and the output terminal of the first comparator N1 is coupled to the first control unit (8).

4. The magnetic electrocardiogram electrode according to claim 1, characterized in that: The pressure detection circuit also includes a push button switch unit (11), which includes a normally closed push button switch SW1. The normally closed push button switch SW1 is installed on the electrocardiogram device. The normally closed push button switch SW1 is connected in series in the power supply circuit of the magnetic ring (22). Under normal conditions, the normally closed push button switch SW1 is in a closed state. When the normally closed push button switch SW1 is pressed, the normally closed push button switch SW1 is in an open state. The push button switch unit (11) outputs a power-off signal to the power supply circuit of the magnetic ring (22) to control the magnetic ring (22) to de-energize and demagnetize.

5. A magnetic electrocardiogram electrode according to claim 1, characterized in that: The magnetic aspiration electrode device (2) is equipped with an indicator light (3). The indicator light (3) is used to remind medical staff that the magnetic aspiration electrode device (2) and the electrode patch (1) are not completely fastened. A second pressure sensor (5) is provided on the outer wall of the metal electrode buckle (13). The second pressure sensor (5) is electrically connected to the pressure detection circuit. The pressure detection circuit is equipped with a second pressure threshold. When the second pressure sensor (5) detects that the pressure on the metal electrode buckle (13) is less than the second pressure threshold, the pressure detection circuit sends a switch signal to power on the indicator light (3) and turn it on.

6. A magnetic electrocardiogram electrode according to claim 5, characterized in that: The pressure detection circuit further includes a second judgment unit (7) and a second control unit (9). The input terminal of the second judgment unit (7) is coupled to the second pressure sensor (5). The second judgment unit (7) is connected to the second pressure threshold. The output terminal of the second judgment unit (7) is coupled to the second control unit (9). When the pressure detection signal output by the second pressure sensor (5) is less than the second pressure threshold, the second judgment unit (7) outputs a second judgment signal to the second control unit (9). The output terminal of the second control unit (9) is coupled to the power supply circuit of the reminder lamp (3) so that when the second judgment signal is received, a switch signal is output to control the reminder lamp (3) to be powered on and lit.

7. A magnetic electrocardiogram electrode according to claim 6, characterized in that: The second judgment unit (7) includes a second comparator N2 and a second adjustable resistor RP2. The inverting input terminal of the second comparator N2 is coupled to the second pressure sensor (5), and the non-inverting input terminal of the second comparator N2 is coupled to the sliding terminal of the second adjustable resistor RP2. One end of the second adjustable resistor RP2 is coupled to the power supply, and the other end of the second adjustable resistor RP2 is grounded. The output terminal of the second comparator N2 is coupled to the logic judgment unit (10). The logic judgment unit (10) includes a logic AND gate. The first signal input terminal of the logic AND gate is coupled to the output terminal of the first comparator N1, and the second signal input terminal of the logic AND gate is coupled to the output terminal of the second comparator N2. The output terminal of the logic AND gate is coupled to the second control unit (9).

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