Wireless electrocardiogram monitoring device

Abstract

The invention discloses a wireless electrocardiograph monitoring device which comprises a vest front piece, a vest rear piece, a first connecting band, a second connecting band, an electrode plate, a lead wire and a portable host. First connecting belts are arranged at the shoulders on the two sides of the vest rear piece, second connecting belts are arranged on the two sides of the chest, and the first connecting belts and the second connecting belts are detachably connected with the vest front piece; a portable host and a lead wire are integrally packaged on the vest front piece, the electrode plates are detachably connected with the lead wire, and the lead wire is connected with the portable host; a main control board is arranged in the portable host, an electrocardiosignal acquisition module, a power supply module, a storage module and a wireless data transmission module are integrated on the main control board, and the electrode slices are connected with the electrocardiosignal acquisition module through lead wires. The whole device adopts a wearable design, and then adopts wireless data transmission, so that medical staff and family members can remotely monitor the health condition of a patient while daily activities of the patient are not affected.

Description

Technical Field

[0001] This invention relates to the field of electrocardiogram (ECG) monitoring, and more particularly to a wireless ECG monitoring device. Background Technology

[0002] Electrocardiogram (ECG) monitors are essential devices for monitoring patients' vital signs. Clinically, ECG monitors typically involve connecting multiple electrodes to the patient according to lead points, and then transmitting the collected signals to the monitoring device via transmission lines. This process involves numerous and complex leads, and the patient cannot move during monitoring, which can create psychological pressure and anxiety. Furthermore, the data collected by these monitors can only be viewed locally, not remotely, and their operation requires significant professional and technical knowledge, making self-monitoring at home inconvenient, especially for the elderly. Therefore, improvements are necessary. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the first objective of the present invention is to provide a wireless electrocardiogram (ECG) monitoring device.

[0004] The technical solution of the present invention is as follows: A wireless electrocardiogram monitoring device, characterized in that it includes: a vest front piece, a vest back piece, a first connecting strap, a second connecting strap, electrode pads, lead wires, and a portable host;

[0005] The vest has first connecting straps on both shoulders of the back panel and second connecting straps on both sides of the chest. Both the first and second connecting straps are detachably connected to the front panel of the vest.

[0006] The portable host and the lead wire are integrally encapsulated on the front panel of the vest. The electrode pads are detachably connected to the lead wires, and the lead wires are connected to the portable host. The portable host has a main control board, which integrates an ECG signal acquisition module, a power module, a storage module, and a wireless data transmission module. The electrode pads are connected to the ECG signal acquisition module through the lead wires.

[0007] Furthermore, the ECG signal acquisition module includes a connected high-frequency anti-high-frequency circuit, a lead dropout detection circuit, a preamplifier, a unipolar adjustment circuit, a main amplifier circuit, a Butterworth low-pass filter, and a band-stop filter.

[0008] Furthermore, the back side of the front panel of the vest is detachably provided with an inner lining layer, and the inner lining layer is detachably provided with a plurality of electrode pads arranged according to the positions of the electrocardiogram lead points.

[0009] Furthermore, the first and second connecting straps are respectively provided with hook and loop fasteners, and the front side of the vest front piece is provided with hook and loop fasteners at corresponding positions, the hook and loop fasteners being bonded together; the outline shape of the inner lining layer matches the outline shape of the vest front piece, the edge of the front side of the inner lining layer is provided with a ring of hook and loop fasteners, and the hook and loop fasteners being bonded together.

[0010] Furthermore, the power module is equipped with a rechargeable battery.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] 1. This device adopts a wearable vest design and uses wireless data transmission, which improves the problems of traditional ECG monitors with complicated and numerous lead wires, which restrict the patient's freedom, are inconvenient for medical staff to operate and remotely monitor. In addition, the tightness of the vest can be adjusted to ensure that the electrode pads fit snugly against the chest, so that the electrode pads can better monitor ECG signals.

[0013] 2. This device features high hardware integration and a small size. It can amplify and filter the acquired signals multiple times, effectively removing interference signals and accurately extracting the ECG signal. Furthermore, it can automatically detect lead dislodgement, making it very convenient to use. Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0015] Figure 1 This is a schematic diagram of the usage state of the present invention;

[0016] Figure 2 This is a front view of the vest of the present invention;

[0017] Figure 3 This is an exploded view of the back of the vest of the present invention;

[0018] Figure 4 This is an exploded view of the front panel of the vest of the present invention;

[0019] Figure 5 This is an exploded view of the front panel of the vest of the present invention.

[0020] Figure 6 This is a module connection diagram of the portable host of the present invention;

[0021] Figure 7 It is the waveform of the human electrocardiogram cycle;

[0022] Figure 8 This is a circuit diagram of the electrocardiogram signal acquisition module of the present invention;

[0023] Figure 9 This is a schematic diagram of an anti-high frequency circuit according to the present invention;

[0024] Figure 10 This is a schematic diagram of a lead detachment detection circuit according to the present invention;

[0025] Figure 11 This is a schematic diagram of a preamplifier circuit according to the present invention;

[0026] Figure 12 This is a schematic diagram of an amplification and unipolar conversion circuit according to the present invention;

[0027] Figure 13 This is a schematic diagram of a Butterworth filter circuit according to the present invention;

[0028] Figure 14 This is a schematic diagram of a band-stop filter according to the present invention.

[0029] Figure label:

[0030] 1. Vest front panel; 2. Vest back panel; 3. Lining layer; 4. First connecting strap; 5. Second connecting strap; 6. Electrode pad; 7. Lead wire; 8. Portable main unit; 9. Adhesive hook layer; 10. Lint trap; 11. Adhesive hook. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "vertical," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] like Figures 1-5 The wireless electrocardiogram monitoring device shown includes: a vest front piece 1, a vest back piece 2, an inner lining layer 3, a first connecting strap 4, a second connecting strap 5, electrode pads 6, lead wires 7, and a portable host 8.

[0035] The back panel 2 of the vest has a first connecting strap 4 on both shoulders and a second connecting strap 5 on both sides of the chest. Both the first connecting strap 4 and the second connecting strap 5 are detachably connected to the front panel 1 of the vest.

[0036] The back of the vest front panel 1 is integrally encapsulated with a portable host 8 and a lead wire 7. The inner lining layer 3 is detachably disposed on the back side of the vest front panel 1 to cover the portable host 8 and the lead wire 7. Multiple electrode pads 6 are detachably disposed on the inner lining layer 3 according to the positions of the ECG lead points. The electrode pads 6 are detachably connected to the lead wire 7. The lead wire 7 is connected to the portable host 8. The portable host 8 integrates a wireless data transmission module and communicates with the display terminal through the wireless transmission module.

[0037] Specifically, such as Figure 2 and Figure 3 As shown, the first connecting strap 4 and the second connecting strap 5 of this device are respectively provided with a Velcro lint-adhesive layer, and the front side of the vest front piece 1 is provided with a Velcro hook layer 9 at the corresponding position. The lint-adhesive layer and the hook layer 9 are bonded together, thereby realizing the detachable connection between the vest back piece 2 and the vest front piece 1.

[0038] By making the back piece 2 and the front piece 1 of the vest detachable, the back piece 2 (without the lead wire 7 and portable host 8) can be removed for washing, ensuring cleanliness and hygiene during use. Furthermore, the back piece 2 and the front piece 1 are detachably connected via Velcro. This simple and easy-to-implement structure allows for adjustment of the vest's tightness, ensuring a better fit and keeping the electrode pads 6 firmly against the chest for optimal ECG signal monitoring.

[0039] In this device, both the lead wire 7 and the portable main unit 8 are encapsulated on the front panel 1 of the vest. This improves structural compactness, minimizes the number of lead wires 7, and enhances portability. To ensure user comfort, an inner lining layer 3 is also provided on the front panel 1. The inner lining layer 3 is located on the back of the front panel 1, which can cover and hide the lead wire 7 and the portable main unit 8. Furthermore, the inner lining layer 3 is more comfortable in contact with human skin. At the same time, the inner lining layer 3 is detachably connected to the front panel 1, allowing it to be removed for washing.

[0040] like Figure 4 and Figure 5 As shown, the outline of the inner lining layer 3 matches the outline of the front panel 1 of the vest. A lint trap 10 is provided along the edge of the front side of the inner lining layer 3, and a hook-and-loop fastener 11 is provided along the edge of the back side of the front panel 1. The lint trap 10 and the hook-and-loop fastener 11 are connected, thus allowing for a detachable connection between the inner lining layer 3 and the front panel 1. In practical applications, both the back panel 2 and the inner lining layer 3 are made of breathable, sweat-absorbent, and soft materials, improving comfort.

[0041] The inner liner 3 is detachably equipped with multiple electrode pads 6 arranged according to the positions of the ECG lead points. These detachable disposable electrode pads 6 are existing products that can be purchased directly. However, the inner liner 3 needs to have slots pre-cut to place the electrode pads 6, and the slots correspond to the positions of the ECG lead points. In this way, when the patient wears the vest, the electrode pads 6 will be in the correct lead positions, and ECG monitoring can be performed directly afterward. For ordinary patients who lack professional medical knowledge, there is no need to remember complicated lead point positions, which greatly improves the convenience of use.

[0042] like Figure 6 As shown, the portable host 8 in this device is mainly responsible for processing and transmitting electrocardiogram (ECG) signals. This device uses an Arm development board as its system core, and includes an external ECG signal acquisition module, a wireless communication module, a large-capacity memory, and a power supply module. The ECG signal acquisition module mainly amplifies and filters the ECG signals, and then, through the A / D conversion unit of the microprocessor on the development board, completes the acquisition of the ECG signals.

[0043] Specifically, each cardiac cycle consists of a series of waveforms, including the P wave, QRS complex, T wave, and U wave. A complete electrocardiogram cycle waveform is as follows: Figure 7 As shown, the frequency range of human electrocardiogram (ECG) signals is mainly concentrated in the range of 0.05-100Hz, with an amplitude of approximately 0-4mV, which is a low-frequency, weak bipolar signal. Because ECG signals are usually mixed with other bioelectrical signals, and are also affected by external electromagnetic fields, primarily 50Hz power frequency interference, the background noise of ECG signals is relatively strong, making measurement conditions quite complex.

[0044] To detect clinically valuable electrocardiogram (ECG) signals without distortion, ECG signal acquisition circuits are often required to possess high precision, high stability, high input impedance, high common-mode rejection ratio, low noise, and strong anti-interference capabilities. The main task of the ECG signal acquisition circuit is to extract the complete ECG signal from the noise, amplify it, and provide it to the microprocessor's conversion unit. The circuit composition is as follows: Figure 8 As shown.

[0045] The ECG signal obtained from ECG electrode pad 6 first passes through a high-frequency rejection circuit, and then undergoes initial amplification via a preamplifier circuit. The processed signal exhibits low noise, low drift, and low common-mode signal characteristics. A unipolar adjustment circuit converts the bipolar ECG signal into a unipolar signal, which is then amplified by the main amplifier. At this stage, the ECG signal is primarily affected by interference from power frequency and electromyography (EMG) signals. To eliminate interference signals such as EMG signals outside the frequency band, a Butterworth low-pass filter filters out the aforementioned high frequencies, followed by a notch filter to eliminate power frequency signals at frequencies below a certain range. Furthermore, since patients have unrestricted movement when using a portable ECG monitor, this acquisition circuit also features automatic lead dislodgement detection.

[0046] In this solution, the anti-high frequency circuit is as follows: Figure 9 As shown, this is a low-pass filter circuit that can filter out high-frequency noise in electrocardiogram signals.

[0047] Lead detachment detection circuit, such as Figure 10 As shown, the lead detachment detection circuit is a comparator. When working normally, the output is a reference voltage. If one electrode detaches, the output will become 0V.

[0048] Preamplifier circuit such as Figure 11 As shown, the preamplifier circuit is used to amplify the amplitude of the input signal to increase its strength or gain. It consists of an input terminal, an output terminal, and an amplifier. After the input signal is amplified by the amplifier, an enhanced signal is obtained at the output terminal.

[0049] The pre-amplified ECG signal is a bipolar signal, which needs to be converted into a unipolar signal and amplified again to meet the input requirements of the subsequent A / D conversion unit, such as... Figure 12 As shown, after amplifying and filtering the electrocardiogram signal, a bias voltage is applied to raise its level and make it a unipolar signal.

[0050] Then, a Butterworth filter is used for filtering. The Butterworth filter is an ideal low-pass filter, characterized by almost no amplitude change in the signal across its passband, while the signal amplitude gradually decreases at the cutoff frequency. This means that the Butterworth filter circuit can filter out high-frequency noise and retain low-frequency signals, making it very useful for applications that require maintaining signal accuracy and stability. The Butterworth filter circuit can be implemented using an RC circuit and an operational amplifier, constructed as follows: Figure 13 As shown.

[0051] Finally, use as follows Figure 14 The band-stop filter shown is used for further filtering. A band-stop filter is a filter that can pass most frequency components but attenuates certain frequency components to a very low level, thereby allowing the extraction of ECG signals within a specific frequency range.

[0052] It should be noted that the signal processing methods involved in this solution, such as amplification and filtering, can be implemented in many other ways in the field of signal processing. Those skilled in the art can adjust them according to the actual situation, and will not be elaborated further.

[0053] The portable host 8 also features a wireless data transmission module for wireless transmission of ECG data. This allows it to connect to a local area network (LAN), creating a terminal platform at the nurses' station for healthcare professionals to monitor patients' vital signs and detect cardiovascular diseases in real time. Alternatively, it can connect to Wi-Fi at home, allowing family members to monitor the patient's health via their mobile phones. The wireless data transmission module can be a GPRS module, Bluetooth module, etc. A storage module is included for data storage, and a power module provides power, containing a rechargeable battery.

[0054] In summary, this device has the following characteristics:

[0055] 1. This device adopts a wearable vest design and uses wireless data transmission, which improves the problems of traditional ECG monitors with complicated and numerous lead wires, which restrict the patient's freedom, are inconvenient for medical staff to operate and remotely monitor. In addition, the tightness of the vest can be adjusted to ensure that the electrode pads fit snugly against the chest, so that the electrode pads can better monitor ECG signals.

[0056] 2. This device has a high degree of hardware integration and a small size. It can amplify and filter the acquired signals multiple times, effectively remove interference signals, accurately extract ECG signals, and can automatically detect lead detachment, making it very convenient to use.

[0057] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wireless electrocardiogram (ECG) monitoring device, characterized in that, include: Vest front panel, vest back panel, first connecting strap, second connecting strap, electrode pads, lead wires, and portable main unit; The vest has first connecting straps on both shoulders of the back panel and second connecting straps on both sides of the chest. Both the first and second connecting straps are detachably connected to the front panel of the vest. The portable host and the lead wire are integrally encapsulated on the front panel of the vest. The electrode pads are detachably connected to the lead wires, and the lead wires are connected to the portable host. The portable host has a main control board, which integrates an ECG signal acquisition module, a power module, a storage module, and a wireless data transmission module. The electrode pads are connected to the ECG signal acquisition module through the lead wires.

2. The wireless ECG monitoring device according to claim 1, characterized in that, The ECG signal acquisition module includes a connected high-frequency protection circuit, a lead dropout detection circuit, a preamplifier, a unipolar adjustment circuit, a main amplifier circuit, a Butterworth low-pass filter, and a band-stop filter.

3. The wireless ECG monitoring device according to claim 1, characterized in that, The back of the front panel of the vest is detachably provided with an inner lining layer, on which a plurality of electrode pads are detachably provided according to the positions of the electrocardiogram lead points.

4. The wireless electrocardiogram monitoring device according to claim 3, characterized in that, The first and second connecting straps are respectively provided with hook and loop fasteners, and the front side of the vest front panel is provided with hook and loop fasteners at the corresponding positions. The hook and loop fasteners are bonded together. The outline shape of the inner lining layer matches the outline shape of the vest front panel. The edge of the front side of the inner lining layer is provided with a ring of hook and loop fasteners, and the hook and loop fasteners are bonded together.

5. The wireless electrocardiogram monitoring device according to claim 1, characterized in that, The power module is equipped with a rechargeable battery.

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