Portable internal fistula monitoring equipment

Abstract

The utility model relates to a portable internal fistula monitoring device, which comprises a shell, an internal fistula monitoring device, an external fistula monitoring device and a control device, and is characterized in that an accommodating space is formed in the shell, and one end of the shell is provided with a first opening communicated with the accommodating space; the ECG electrode module is arranged in the containing space, the ECG electrode module comprises an ECG electrode plate and an ECG circuit which are electrically connected, the ECG electrode plate is embedded in the first opening, the ECG electrode plate is used for receiving an electric signal, and the ECG circuit converts the electric signal into the electric signal; and the central control module is arranged in the accommodating space, the central control module receives a signal transmitted by the ECG circuit and outputs the signal to a data center through a mobile intelligent device, and the data center returns an analysis result to the mobile intelligent device. By means of the arrangement, the overall size is effectively reduced, carrying is easy, operation is simplified, and more refined and scientific continuous management of internal fistula can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary equipment technology, and in particular to a portable arteriovenous fistula monitoring device. Background Technology

[0002] Hemodialysis is a renal replacement therapy used to treat patients with chronic renal failure. Before hemodialysis, vascular access needs to be established. Arteriovenous fistulas (AVFs) are a commonly used vascular access option due to their advantages such as good long-term dialysis efficacy, high patient survival rates, low infection rates, and low thrombosis rates.

[0003] However, fistulas are prone to failure, requiring the creation of new arteriovenous fistulas in other locations, i.e., repeat fistula reconstruction. This surgery is expensive, placing a significant financial burden on patients. Furthermore, the primary sites for fistula creation are the extremities, where vascular resources are limited. As available vessels gradually become unusable, patients are forced to choose other, riskier vascular access routes. Therefore, daily maintenance and monitoring of the fistula are crucial; otherwise, the probability of fistula failure increases. Once a fistula fails, the longer it remains unresponsive, the greater the physical burden on the patient.

[0004] However, existing fistula detection devices are usually wearable, which are bulky, complex to operate, inconvenient to carry and use in daily life, and not conducive to the continuous monitoring and management of fistulas. Utility Model Content

[0005] To address the aforementioned shortcomings, this invention proposes a portable arteriovenous fistula monitoring device.

[0006] The technical solution adopted by this utility model is a portable arteriovenous fistula monitoring device, comprising:

[0007] A shell having an internal accommodating space, and a first opening communicating with the accommodating space at one end of the shell;

[0008] An ECG electrode module is placed within the accommodating space. The ECG electrode module includes an electrically connected ECG electrode sheet and an ECG circuit. The ECG electrode sheet is embedded in the first opening and is used to receive electrical signals, which are then converted into electrical signals by the ECG circuit.

[0009] The central control module is placed within the accommodating space. The central control module receives the signal transmitted by the ECG circuit and outputs it to the data center through the mobile smart device. The data center returns the analysis results to the mobile smart device.

[0010] Furthermore, the ECG electrode module also includes an electrode housing, the ECG electrode sheet is installed inside the electrode housing, and the electrode housing is embedded in the first opening.

[0011] Furthermore, the housing includes an upper shell and a lower shell that can be snapped together, both of which are rectangular, and the first opening is formed at the connection between the upper shell and the lower shell.

[0012] Furthermore, a second opening is provided on the upper shell, and a horn hole is provided on the lower shell;

[0013] The central control module includes a central control circuit, a display screen and a speaker that are respectively connected to the central control circuit, the ECG circuit is connected to the central control circuit, and the central control circuit interacts with external mobile devices through a wireless communication interface.

[0014] The display screen is embedded in the second opening, the central control circuit and the speaker are placed in the accommodating space, and the speaker is positioned directly opposite the speaker hole.

[0015] Furthermore, it also includes an electrothermal module disposed within the accommodating space, the electrothermal module being capable of heating at least one inner surface of the housing.

[0016] Furthermore, the electric heating module includes an electric heating element and a temperature control circuit. The temperature control circuit is connected to the central control circuit and connected to the electric heating element through a wire. The temperature control circuit provides electrical energy to the electric heating element, and the electric heating element converts the electrical energy into heat energy and releases it. The electric heating element abuts against the lower shell.

[0017] Furthermore, the ECG circuit, central control circuit, temperature control circuit, and display screen are integrated on the same circuit board.

[0018] Furthermore, it also includes a battery module electrically connected to the circuit board and used to supply power to the circuit board.

[0019] Furthermore, a first button is provided on the upper shell, and a second button is provided on the side of the shell. The first button controls the start and stop of the portable arteriovenous fistula monitoring device, and the second button controls the temperature of the heating module.

[0020] Furthermore, the second opening is also covered by a screen cover, which is located on the side of the display screen away from the receiving space, and the screen cover is made of a transparent material.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The portable fistula monitoring device of this utility model, through its reasonable internal structural layout, such as compactly placing the ECG electrode module and the central control module within the housing, effectively reduces the overall size compared to those larger wearable fistula detection devices. Its compact shape makes it easier to carry, whether for medical staff to use when moving between different wards or departments, or for patients to carry with them in daily life for fistula detection at any time, without causing too much burden. It facilitates rapid detection in various scenarios, making fistula detection a relatively easy and natural daily activity. This encourages patients to actively participate in the self-monitoring and management of their fistulas, ensuring that the health status of the fistula is continuously monitored. Medical staff can also track changes in the fistula's status more frequently, promptly identify potential problems, and provide more comprehensive and timely data support for the scientific management of fistulas.

[0023] 2. Wearable devices often involve complex functions and structures, leading to cumbersome operation and requiring professional training to master their use. In contrast, the portable arteriovenous fistula monitoring device of this invention features clearly defined components with logical connections. The ECG electrode module, controlled by the central control module, enables fistula monitoring. Furthermore, the output of results from the central control module is relatively intuitive, allowing users (whether medical personnel or patients with minimal guidance) to easily understand and operate the device. This eliminates the need for extensive learning of complex procedures, significantly improving detection efficiency.

[0024] 3. Existing wearable devices may not be convenient or efficient enough in terms of data storage, transmission, and analysis feedback. Electronic devices are not suitable for use around arteriovenous fistulas. However, in this invention, the central control module can transmit the monitored electrical signals to a data center for storage and analysis via a mobile smart device. The analysis results can also be fed back to the user via a mobile smart device, such as a mobile app. This makes it much more convenient to archive and review arteriovenous fistula detection data for the long term, as well as to adjust the management strategy of the fistula in a timely manner based on the analysis results (such as adjusting the treatment plan and scheduling follow-up examinations). This helps to achieve more refined and scientific continuous management of arteriovenous fistulas. Attached Figure Description

[0025] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the overall structure of a portable arteriovenous fistula monitoring device;

[0027] Figure 2 This is a top view of a portable arteriovenous fistula monitoring device;

[0028] Figure 3 This is a bottom view of a portable arteriovenous fistula monitoring device;

[0029] Figure 4 This is a left view of a portable arteriovenous fistula monitoring device;

[0030] Figure 5 This is a right view of a portable arteriovenous fistula monitoring device;

[0031] Figure 6 This is the front view of the portable arteriovenous fistula monitoring device;

[0032] Figure 7 This is a rear view of a portable arteriovenous fistula monitoring device;

[0033] Figure 8 This is a partial structural diagram of the ECG electrode module;

[0034] Figure 9 This is a schematic diagram of the internal structure of a portable arteriovenous fistula monitoring device.

[0035] 10. Housing; 11. Top shell; 12. Bottom shell; 13. First button; 14. Second button; 15. Charging port; 16. Speaker hole; 17. Screen cover;

[0036] 20. ECG electrode module; 21. ECG electrode sheet; 22. Electrode housing; 23. ECG circuit;

[0037] 30. Battery module;

[0038] 40. Central control module; 41. Central control circuit; 42. Display screen; 43. Speaker;

[0039] 51. Heating element; 52. Temperature control circuit. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In one embodiment, a portable arteriovenous fistula monitoring device, see [link / reference] Figure 6 and Figure 9The device includes a housing 10, an ECG electrode module 20, and a central control module 40. The housing 10 forms an internal accommodating space, serving as the external support structure for the entire portable arteriovenous fistula monitoring device. This internal space provides a location for the installation and protection of other components, including the ECG electrode module 20 and the central control module 40. The ECG electrode module 20 includes electrically connected ECG electrode pads 21 and an ECG circuit 23. ECG (Electrocardiogram) is a cardiac measurement technique. The ECG electrode module 20 collects electrical signals by attaching the ECG electrode pads to the arteriovenous fistula site on the patient's body.

[0042] One end of the housing 10 has a first opening communicating with the accommodating space, while the first opening at the other end provides a channel for the ECG electrode plate 21 of the ECG electrode module 20 to contact the outside world, enabling it to effectively receive electrical signals. See also Figure 2 and Figure 4 The ECG electrode 21 is embedded in the first opening, ensuring the stability and accuracy of the ECG electrode 21 during use. The ECG electrode 21 receives electrical signals, which are then converted into electrical signals by the ECG circuit 23 for transmission to the central control module 40 for further processing.

[0043] The central control module 40 receives signals transmitted from the ECG electrode pads 21 and the ECG circuit 23, and analyzes, processes, and integrates these signals. After processing, the central control module 40 outputs relevant information in an appropriate manner, such as displaying images, data, and other information on the display screen 42, or issuing specific waveform prompts through an audio output device, thereby providing users with valuable feedback and diagnostic information.

[0044] The central control module 40 can also transmit the monitored electrical signals to a data center via wired or wireless network connections through mobile smart devices. The data center is responsible for storing and analyzing the received electrical signal data. It can store this data for extended periods and in large quantities, facilitating future retrieval. Simultaneously, using professional data analysis algorithms and software, it deeply mines the characteristics and patterns of the electrical signal data. For example, it analyzes the correlation between factors such as the frequency, intensity, and duration of the electrical signals and the specific condition of the fistula, aiming to extract valuable diagnostic information. The results obtained after analysis are transmitted back to the user via the network. This data transfer can be accomplished using mobile smart devices such as smartphones. The smartphone acts as an intermediary, transmitting data from the server corresponding to the portable fistula monitoring device to the server. Finally, the server sends the analysis results back to the relevant application (app) on the mobile phone, allowing users to conveniently view detailed and intuitive analysis conclusions, understand the detection status, and receive corresponding diagnostic prompts through the mobile app.

[0045] The portable fistula monitoring device in this embodiment, through its reasonable internal structural layout, such as compactly placing the ECG electrode module 20 and the central control module 40 within the housing 10, effectively reduces the overall size compared to larger wearable fistula detection devices. Its compact shape makes it easier to carry, whether for medical staff moving between different wards or departments, or for patients to carry in their daily lives for fistula detection at any time, without causing too much burden. It facilitates rapid detection in various scenarios, making fistula detection a relatively easy and natural daily activity. This encourages patients to actively participate in the self-monitoring and management of their fistulas, ensuring continuous attention to the health status of the fistula. Medical staff can also track changes in the fistula's status more frequently, promptly identify potential problems, and provide more comprehensive and timely data support for the scientific management of fistulas.

[0046] Wearable devices often involve complex operations due to their numerous integrated functions and intricate structures, requiring specialized training to master their use. In contrast, the portable arteriovenous fistula monitoring device of this embodiment features clearly defined components with logical connections. The ECG electrode module 20, under the control of the central control module 40, enables the ECG electrode pads 21 to monitor the fistula. Furthermore, the output process of the central control module 40 is relatively intuitive, allowing users (whether medical personnel or patients with minimal guidance) to easily understand and operate the device. This eliminates the need for extensive learning of complex procedures, significantly improving detection efficiency.

[0047] Existing wearable devices may not be convenient or efficient enough in terms of data storage, transmission, and analysis feedback. However, in this embodiment, the central control module 40 can transmit the monitored electrical signals to the data center for storage and analysis via a mobile smart device. The analysis results can also be fed back to the user via a mobile smart device, such as an app on a mobile phone. This makes it much more convenient to archive and review fistula detection data for the long term, as well as to adjust fistula management strategies in a timely manner based on analysis results (such as adjusting treatment plans and scheduling follow-up appointments), thus facilitating more refined and scientific continuous management of fistulas.

[0048] See Figure 8-9 The ECG circuit 23 is connected to the central control module 40. The central control module 40 can send commands and control signals to the ECG circuit 23, and the ECG circuit 23 can also feed back its own working status and data to the central control module 40. The ECG electrode 21 is attached to the fistula tube. The ECG electrode 21 receives electrical signals and is connected to the ECG circuit 23, converting the electrical signals into digital signals, which are then processed and analyzed by the central control module 40.

[0049] In terms of spatial layout, the ECG electrode pads 21 are positioned closer to the accommodating space, which helps optimize the overall space occupied by the ECG electrode module 20. This allows the ECG electrode module 20 to be integrated more compactly into the housing 10 of the portable arteriovenous fistula monitoring device, facilitating miniaturization, portability, and operation. Furthermore, within the limited device space, it provides more reasonable layout space for other components (such as the central control module 40, power supply, etc.), thus improving the device's integration level. Simultaneously, the placement of the ECG electrode pads 21 close to the accommodating space significantly shortens the transmission distance of electrical signals, minimizing the signal transmission path between components. This reduces signal attenuation, interference, and delay during transmission, optimizing the signal transmission efficiency and quality of the entire ECG electrode module 20. Consequently, it improves the ECG electrode module 20's ability to acquire and process weak electrical signals, enhancing detection sensitivity and resolution, and enabling a clearer presentation of the subtle structural and characteristic changes of the arteriovenous fistula.

[0050] In one embodiment, the ECG electrode module 20 further includes an electrode housing 22, with the ECG electrode sheet 21 installed inside the electrode housing 22. The electrode housing 22 is embedded in the first opening. The electrode housing 22 can reduce physical damage to the ECG electrode sheet 21 and ensure its conductivity and the accuracy of signal reception.

[0051] In one embodiment, see Figure 6 The housing 10 includes an upper shell 11 and a lower shell 12 that can be snapped together. Both the upper shell 11 and the lower shell 12 are rectangular, with regular and simple shapes, which facilitates processing, manufacturing, and assembly. The first opening is formed at the connection between the upper shell 11 and the lower shell 12. The structure at this location is relatively stable and easy to process, ensuring the accuracy and quality of the opening. It also provides a suitable position for the installation of the ECG electrode 21, allowing the ECG electrode 21 to be accurately embedded in the opening and effectively contact the external environment to achieve the function of receiving bioelectrical signals.

[0052] In one embodiment, a second opening is provided on the upper shell 11, see [reference]. Figure 3 and Figure 5 A flared hole 16 is provided on the lower shell 12. (See also...) Figure 9 The central control module 40 includes a central control circuit 41, a display screen 42 and a speaker 43 respectively connected to the central control circuit 41 by signals. The ECG circuit 23 is connected to the central control circuit 41 by signals. The central control circuit 41 interacts with external mobile devices through a wireless communication interface. The display screen 42 is embedded in the second opening, and the central control circuit 41 and the speaker 43 are placed in the accommodating space, with the speaker 43 facing the speaker hole 16.

[0053] The second opening in the upper shell 11 provides a mounting position for the display screen 42. The display screen 42 is fixed in the second opening by embedding, so that it can intuitively display information to the user. The display screen 42 is connected to the central control circuit 41 and can receive various data output by the central control circuit 41, such as test results, parameter setting information, equipment status, etc., and present them to the user in a visual way, so that the user can understand the working status of the equipment and the detection status of the fistula.

[0054] The speaker hole 16 of the lower casing 12 corresponds to the speaker 43 placed in the accommodating space. The speaker 43 is connected to the central control circuit 41 and is used to convert the electrical signal processed by the central control circuit 41 into a waveform output. For example, during the detection process, a specific prompt tone may be emitted through the speaker 43 to inform the user of the start, end or abnormal situation of the detection; or during the data interaction process, when the user receives the instruction or feedback information from the external mobile device, the speaker 43 will emit a corresponding waveform to remind the user.

[0055] The central control circuit 41, as the core of the central control module 40, not only connects to the display screen 42 and the speaker 43, but also establishes a signal connection with the ECG circuit 23. It can receive the detection data transmitted by the ECG circuit 23 and perform further processing, analysis, and integration. Simultaneously, the central control circuit 41 has a wireless communication interface, enabling data interaction with external mobile devices (such as smartphones and tablets) to achieve data transmission and sharing. For example, it can send detection data to mobile devices for more detailed analysis, storage, or remote diagnosis. It can also receive control commands from mobile devices to remotely adjust the working mode and parameters of the portable fistula monitoring device.

[0056] In one embodiment, the portable arteriovenous fistula listening device further includes an electrothermal module disposed within the accommodating space. The electrothermal module can heat at least one inner surface of the housing 10, thereby achieving a localized or overall heating function for the housing 10. The electrothermal module may include a heating element (such as a resistance wire, a thermistor, etc.), a temperature control device, and thermal insulation material. The heating element is responsible for generating heat, the temperature control device is used to precisely control the heating temperature to prevent excessively high or low temperatures from adversely affecting the device and the user, and the thermal insulation material helps to concentrate heat in the required area, reducing heat loss and thermal interference to other components, ensuring that heat is efficiently applied to the inner surface of the housing 10.

[0057] During dialysis treatment, the patient's fistula arm is usually exposed, making it prone to cold and discomfort. The portable fistula monitoring device's built-in heating module directly warms the patient's arm, effectively alleviating discomfort caused by cold. This allows the patient to be more relaxed and comfortable during prolonged treatment, improving tolerance and compliance. A properly warm environment promotes local blood circulation in the patient's arm, which plays a positive role in maintaining the normal function of the fistula. Good blood circulation helps reduce the risk of thrombosis, ensuring the smooth progress of dialysis treatment, and also contributes to the long-term stability and health of the fistula, reducing the incidence of complications caused by poor blood circulation.

[0058] In one embodiment, see Figure 9 The electric heating module includes a heating element 51 and a temperature control circuit 52. The temperature control circuit 52 is signal-connected to the central control circuit 41 and connected to the heating element 51 via wires. The temperature control circuit 52 provides electrical energy to the heating element 51, which converts the electrical energy into heat energy and releases it. The heating element 51 abuts against the lower shell 12, allowing the heat generated by the heating element 51 to be efficiently conducted to the lower shell 12 and further transferred to external objects (such as the patient's arm) in contact with the lower shell 12, thereby achieving the function of heating the local environment. On the one hand, the temperature control circuit 52 establishes a signal connection with the central control circuit 41, enabling it to receive instructions and feedback information from the central control circuit 41 and achieve coordinated operation with the entire equipment control system; on the other hand, it is connected to the heating element 51 via wires, providing electrical energy to the heating element 51 and precisely controlling the heating power and temperature changes of the heating element 51.

[0059] When the portable arteriovenous fistula monitoring device activates its heating function, the central control circuit 41 sends a signal to the temperature control circuit 52. The temperature control circuit 52 then supplies power to the heating element 51, causing the heating element 51 to convert electrical energy into heat energy. During the heating process, the temperature control circuit 52 continuously monitors the temperature of the heating element 51 and dynamically adjusts the electrical energy supplied to the heating element 51 through a feedback adjustment mechanism. This ensures that the temperature of the heating element 51 remains within a preset safe and suitable range, preventing excessively high or low temperatures from harming the patient or affecting the heating effect.

[0060] In one embodiment, see Figure 9The ECG circuit 23, central control circuit 41, temperature control circuit 52, and display screen 42 are integrated on the same circuit board. The ECG circuit 23 is mainly responsible for processing signals related to the ECG electrode module 20, such as receiving electrical signals from the ECG electrode pads 21 and performing preliminary processing. The central control circuit 41 is responsible for the overall control of the portable fistula monitoring device, coordinating the operation of various components, processing data, and enabling data interaction with external mobile devices. The temperature control circuit 52 focuses on controlling the temperature of the heating element 51 in the heating module, ensuring its safe, stable, and precise release of heat energy. The display screen 42 is used to intuitively display the device's operating status, test results, and other information to the user.

[0061] By integrating multiple functional circuits and the display screen 42 onto a single circuit board, and through rational circuit wiring and component layout, a tight and orderly connection is established between these different functional circuits and components, forming a highly integrated circuit system. This greatly optimizes the internal spatial layout of the portable arteriovenous fistula monitoring device, effectively reducing the space occupied by the circuit board and connecting lines, making the internal structure of the device more compact. This facilitates the overall miniaturization of the device, making it easy to carry and use flexibly in different medical scenarios. It also reserves more space for other possible functional expansions or component installations, improving the utilization efficiency of the device's internal space. The short-distance connections between circuits on the same circuit board shorten the signal transmission path, reducing problems such as signal attenuation, interference, and transmission delays that may be caused by excessively long lines or too many interfaces.

[0062] In one embodiment, the portable fistula listening device further includes a battery module 30, which is electrically connected to the circuit board and used to power the circuit board. The battery module 30 serves as the energy source for the entire portable fistula listening device, providing stable power support to the various functional modules on the circuit board. The battery module 30 may include a battery and a battery casing, with the casing enclosing the battery and providing physical protection and isolation. The battery can be a rechargeable battery, and a charging port 15 may be provided on the casing 10 for charging the rechargeable battery.

[0063] In one embodiment, see Figure 1-2 and Figure 7The upper shell 11 is equipped with a first button 13, and the side of the shell 10 is equipped with a second button 14. The first button 13 controls the start and stop of the portable arteriovenous fistula monitoring device. When the first button 13 is pressed, the device's power system starts, and each functional module (such as the ECG electrode module 20, the central control module 40, etc.) is powered on and enters the initialization state, ready to perform arteriovenous fistula detection. Pressing the button again turns off the device, stopping all operating functions and entering the shutdown state to save power and extend the device's service life. The second button 14 controls the temperature of the heating module. By pressing the second button 14, the heating temperature of the heating module can be increased or decreased, or switched between different preset temperature levels, thereby meeting the different needs of patients under different ambient temperatures or for different levels of warmth, providing patients with a more comfortable experience. At the same time, it can also accurately control the temperature to avoid discomfort to patients or affect the normal operation of the device due to excessively high or low temperatures.

[0064] In one embodiment, the second opening is further covered by a screen cover 17. The screen cover 17 is located on the side of the display screen 42 away from the accommodating space, that is, on the outermost layer of the device, and is in direct contact with the external environment. The screen cover 17 can effectively prevent external dust, moisture, and some possible physical impacts from damaging the display screen 42. The screen cover 17 is made of transparent material, and the user can clearly see various information displayed on the display screen 42, such as test results, device parameters, operation prompts, etc., through the screen cover 17.

[0065] In the description of this specification, the terms "Embodiment 1," "this embodiment," or "in one embodiment," etc., indicate that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example; moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in one or more embodiments or examples.

[0066] In the description of this specification, the terms "connection," "installation," "fixing," "setting," and "having" are interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0067] In the description of this specification, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] The above description of the embodiments is intended to enable those skilled in the art to understand and apply the technology of this invention. Those skilled in the art can readily make various modifications to these examples and apply the general principles described herein to other embodiments without creative effort. Therefore, this invention is not limited to the above embodiments. Modifications in the following situations should be within the scope of protection of this invention: ① New technical solutions implemented based on the technical solution of this utility model and combined with existing common knowledge, where the technical effects of the new technical solution do not exceed the technical effects of this utility model; ② Equivalent substitutions of some features of the technical solution of this utility model using known technology, resulting in the same technical effects as those of this utility model; ③ Extendable technical solutions based on the technical solution of this utility model, where the substantive content of the extended technical solution does not exceed the technical solution of this utility model; ④ Equivalent transformations made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields.

Claims

1. A portable internal fistula monitoring device, characterized by, include: A shell having an internal accommodating space, and a first opening communicating with the accommodating space at one end of the shell; An ECG electrode module is placed within the accommodating space. The ECG electrode module includes an electrically connected ECG electrode sheet and an ECG circuit. The ECG electrode sheet is embedded in the first opening and is used to receive electrical signals, which are then converted into electrical signals by the ECG circuit. The central control module is placed within the accommodating space. The central control module receives the signal transmitted by the ECG circuit and outputs it to the data center through the mobile smart device. The data center returns the analysis results to the mobile smart device.

2. The portable fistula monitoring device of claim 1, wherein, The ECG electrode module also includes an electrode housing, the ECG electrode sheet is installed inside the electrode housing, and the electrode housing is embedded in the first opening.

3. The portable fistula monitoring device of claim 1 or 2, wherein, The housing includes an upper shell and a lower shell that can be snapped together, both of which are rectangular, and the first opening is formed at the connection between the upper shell and the lower shell.

4. The portable fistula monitoring device of claim 3, wherein, The upper shell has a second opening, and the lower shell has a horn hole; The central control module includes a central control circuit, a display screen and a speaker that are respectively connected to the central control circuit, the ECG circuit is connected to the central control circuit, and the central control circuit interacts with external mobile devices through a wireless communication interface. The display screen is embedded in the second opening, the central control circuit and the speaker are placed in the accommodating space, and the speaker is positioned directly opposite the speaker hole.

5. The portable fistula monitoring device of claim 4, wherein, It also includes an electric heating module disposed within the accommodating space, the electric heating module being capable of heating at least one inner surface of the housing.

6. The portable fistula monitoring device of claim 5, wherein, The electric heating module includes an electric heating element and a temperature control circuit. The temperature control circuit is connected to the central control circuit and to the electric heating element through a wire. The temperature control circuit provides electrical energy to the electric heating element, which converts the electrical energy into heat energy and releases it. The electric heating element abuts against the lower shell.

7. The portable fistula monitoring device of claim 6, wherein, The ECG circuit, central control circuit, temperature control circuit, and display screen are integrated on the same circuit board.

8. The portable fistula monitoring device of claim 7, wherein, It also includes a battery module that is electrically connected to the circuit board and is used to power the circuit board.

9. The portable internal fistula monitoring device of any one of claims 5-8, wherein, The upper shell is also provided with a first button, and the side of the shell is also provided with a second button. The first button controls the start and stop of the portable arteriovenous fistula monitoring device, and the second button controls the temperature of the heating module.

10. The portable internal fistula monitoring device of any one of claims 4-8, wherein, The second opening is also covered by a screen cover, which is located on the side of the display screen away from the receiving space, and the screen cover is made of transparent material.

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