Hemodialysis errhysis detection equipment and method and medium

Abstract

The invention discloses hemodialysis errhysis detection equipment and method and a medium, and relates to the technical field of medical equipment, an induction antenna of an intelligent patch emits a first radio frequency signal and receives a second radio frequency signal reflected from a detection area, and an induction chip converts the received second radio frequency signal into an electric signal; the antenna group sends the electric signal to the controller, and the controller judges the leakage condition according to the electric signal and controls the terminal to generate prompt information. The intelligent sticker adopts a power-free mode, an interaction mode is a radio frequency coupling technology, and the intelligent sticker does not depend on optical signals and is not easily influenced by changes of environment humidity and illumination intensity, so that misjudgment is effectively avoided, and the detection stability is ensured. The device does not need to detect by using an electric signal generated by interaction of a radio-frequency signal and blood based on blood parameters of a specific crowd, and because blood of different crowds has consistency in response to the radio-frequency signal, the device can be suitable for wider crowds, and the application range is expanded.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a blood dialysis blood leakage detection device, method, and medium. Background Art

[0002] Blood leakage during hemodialysis is one of the core complications threatening the safety of patients' lives. Its risk runs through the entire treatment process and involves multi-dimensional reasons such as technical operations, equipment management, and patients' own factors. According to research, the problem of blood leakage not only directly leads to blood loss and infection risks but also triggers chain clinical reactions, endangering the health and even life of patients. Therefore, the monitoring of blood leakage is extremely necessary.

[0003] Currently, the following problems exist in the blood dialysis blood leakage monitoring technology: Detecting blood dialysis blood leakage through optical signals: Due to factors such as pipeline vibration or temperature changes, tiny bubbles are easily generated, and the optical signals of these bubbles are highly similar to those of blood leakage. This results in the existing optical detection devices being prone to misjudgment, mistaking bubbles for blood leakage situations, thus causing a relatively high false alarm rate for blood leakage monitoring. Existing sensors are easily interfered by changes in environmental humidity and light intensity, leading to unstable sensitivity problems. There are differences in blood parameters (blood viscosity and hemoglobin spectral characteristics) among different populations, and the algorithms of existing devices are designed based on the blood parameters of specific populations. Due to these differences, when existing devices are applied to other populations, the detection accuracy will decrease, resulting in a narrow applicable range of existing devices.

[0004] Therefore, how to effectively avoid misjudgment and prevent detection from being interfered by changes in environmental humidity and light intensity to improve detection accuracy, and how to expand the applicable range are problems that those skilled in the art need to solve. Summary of the Invention

[0005] The purpose of this application is to provide a blood dialysis blood leakage detection device, method, and medium to solve the following problems: The false alarm rate of detecting blood dialysis blood leakage through optical signals is relatively high; existing sensors are easily interfered by changes in environmental humidity and light intensity, resulting in unstable sensitivity; the applicable range of existing devices is narrow.

[0006] To solve the above technical problems, this application provides a blood dialysis blood leakage detection device, including: a smart patch, an antenna group, a controller, and a terminal;

[0007] The intelligent patch is used to cover the area to be detected. The intelligent patch includes an adsorption material layer, a core detection unit layer, and a first substrate layer. The core detection unit layer is sandwiched between the adsorption material layer and the first substrate layer. The core detection unit layer includes a second substrate layer and a detection layer disposed on the surface of the second substrate layer. The detection layer is located between the second substrate layer and the adsorption material layer. The detection layer includes an induction antenna, an induction chip, and a detection area. The induction antenna is respectively connected to the induction chip and the detection area. The induction antenna is used to transmit a first radio frequency signal and receive a second radio frequency signal reflected from the detection area. The induction chip is used to convert the second radio frequency signal into an electrical signal. The antenna group is disposed on the outer surface of the first substrate layer. The controller is respectively connected to the antenna group and the terminal. The antenna group is used to send the electrical signal to the controller. The controller is used to judge the leakage situation according to the electrical signal. The terminal is used to generate a prompt message according to the leakage situation.

[0008] In a feasible embodiment, the detection layer further includes a detection strip respectively connected to the detection area and the induction antenna. The detection strip is located at one end of the second substrate layer, and multiple detection strips are arranged at intervals along the length direction of the second substrate layer. The induction antenna is distributed in an S shape at the other end of the second substrate layer.

[0009] In a feasible embodiment, an adhesive layer is provided at the edge of the side of the adsorption material layer away from the core detection unit layer, and a protective film is pasted on the adhesive layer.

[0010] In a feasible embodiment, the antenna group includes a binding band, an antenna, a communication line, and a communication connector. The antenna is buried in the binding band, and the antenna covers the core detection unit layer. One end of the communication line is connected to the antenna, and the other end of the communication line extends out of the binding band and is connected to the communication connector. The communication connector is connected to the controller.

[0011] In a feasible embodiment, the binding band includes an inner binding band and an outer binding band. The antenna is buried between the inner binding band and the outer binding band. A sticker band is provided at one end of the inner binding band, and the sticker band is used to bond with the outer binding band.

[0012] In a feasible embodiment, a data storage device and a wireless router device are further included. The data storage device is connected to the terminal, and the controller is connected to the terminal through the wireless router device.

[0013] The present application further provides a blood dialysis bleeding detection method, which is applied to the blood dialysis bleeding detection device, and includes:

[0014] Control the induction antenna to transmit a first radio frequency signal to the detection area;

[0015] If no electrical signal is received within a preset time period, it is determined that the intelligent sticker or the antenna group has a fault and a fault prompt is generated; wherein, the electrical signal is obtained by converting the second radio frequency signal reflected by the detection area by the induction chip;

[0016] If an electrical signal is received within a preset time period, judge the leakage situation according to the electrical signal, and generate a prompt message according to the leakage situation.

[0017] In a feasible embodiment, judging the leakage situation according to the electrical signal includes:

[0018] Preprocess the electrical signal;

[0019] Extract characteristic parameters from the preprocessed signal data; wherein, the characteristic parameters include amplitude characteristics, frequency characteristics and phase characteristics;

[0020] Judge the leakage situation according to the characteristic parameters.

[0021] In a feasible embodiment, extracting characteristic parameters from the preprocessed signal data includes:

[0022] If the preprocessed signal data is a periodic signal, take the maximum and minimum values of the signal in the time domain for the preprocessed signal data, and take half of the difference between the maximum value and the minimum value as the amplitude characteristic;

[0023] If the preprocessed signal data is a non-periodic signal, calculate the root mean square of the amplitudes of all sampling points as the amplitude characteristic;

[0024] Perform a fast Fourier transform on the preprocessed signal data to obtain a frequency spectrum, and extract the main frequency corresponding to the maximum amplitude in the frequency spectrum as the frequency characteristic;

[0025] Perform a Hilbert transform on the preprocessed signal data to obtain an analytic signal, and calculate the ratio of the real part to the imaginary part of the analytic signal as the phase characteristic;

[0026] Correspondingly, judging the leakage situation according to the characteristic parameters includes:

[0027] If the amplitude characteristic, the frequency characteristic and the phase characteristic are all within their respective preset ranges, the leakage situation is that no leakage has occurred;

[0028] If at least one of the amplitude characteristic, the frequency characteristic and the phase characteristic is not within the corresponding preset range, the leakage situation is that leakage has occurred.

[0029] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the blood dialysis bleeding detection method are implemented.

[0030] A blood dialysis bleeding detection device provided by the present application. The intelligent patch is used to cover the area to be detected. The intelligent patch includes a core detection unit layer. The induction antenna, induction chip and detection area in the core detection unit layer work together. The induction antenna emits a first radio frequency signal and receives a second radio frequency signal reflected by the detection area. The induction chip converts the received second radio frequency signal into an electrical signal. The antenna group sends the electrical signal to the controller. The controller judges the leakage situation according to the electrical signal and controls the terminal to generate a prompt message. The intelligent patch adopts a non-powered method (that is, no built-in power supply is required), and its interaction method is radio frequency coupling technology. This detection method does not rely on optical signals and is not easily affected by changes in environmental humidity and light intensity, which can effectively avoid misjudgment and ensure the stability of detection. Moreover, the detection principle is not based on the blood parameters of a specific population, but uses the characteristic electrical signals generated by the interaction between radio frequency signals and blood for detection. Since the blood of different populations has consistency in the response to radio frequency signals, the device can be applied to a wider range of populations and is not affected by differences in blood viscosity and hemoglobin spectral characteristics, thus expanding the scope of application.

[0031] The beneficial effects of a blood dialysis bleeding detection method and medium provided by the present application correspond to those of the device, and the effects are as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a structural diagram of a blood dialysis bleeding detection device provided by an embodiment of the present application;

[0034] Figure 2 It is a structural diagram of an intelligent patch provided by an embodiment of the present application;

[0035] Figure 3 It is a structural diagram of an adsorption material layer provided by an embodiment of the present application;

[0036] Figure 4 It is a cross-sectional view of an adsorption material layer provided by an embodiment of the present application;

[0037] Figure 5 It is a structural diagram of a core detection unit layer provided by an embodiment of the present application;

[0038] Figure 6 Structural diagram of an antenna group provided by an embodiment of the present application;

[0039] Figure 7 Cross-sectional view of an antenna group provided by an embodiment of the present application;

[0040] Figure 8 Structural diagram of another hemodialysis blood leakage detection device provided by an embodiment of the present application;

[0041] Figure 9 Flow chart of a hemodialysis blood leakage detection method provided by an embodiment of the present application.

[0042] Reference numerals are as follows: 1 - intelligent patch, 2 - antenna group, 3 - controller, 4 - terminal, 5 - wireless router device, 6 - data storage device, 101 - adsorption material layer, 102 - core detection unit layer, 103 - first substrate layer, 104 - protective film, 1021 - second substrate layer, 1022 - induction antenna, 1023 - induction chip, 1024 - detection area, 1025 - detection strip, 201 - inner strap, 202 - outer strap, 203 - antenna, 204 - communication line, 205 - communication connector, 206 - sticker tape. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

[0044] The core of the present application is to provide a hemodialysis blood leakage detection device, method and medium, which are used to effectively avoid misjudgment and prevent the detection from being interfered by changes in environmental humidity and light intensity, so as to improve the detection accuracy and how to expand the scope of application.

[0045] In order to enable those skilled in the art to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0046] Figure 1 Structural diagram of a hemodialysis blood leakage detection device provided by an embodiment of the present application; Figure 2 Structural diagram of an intelligent patch provided by an embodiment of the present application, such as Figure 1 and Figure 2As shown in the figure, the hemodialysis blood leakage detection device includes: a smart patch 1, an antenna group 2, a controller 3, and a terminal 4; the smart patch 1 is used to cover the area to be detected. The smart patch 1 includes an adsorption material layer 101, a core detection unit layer 102, and a first substrate layer 103. The core detection unit layer 102 is sandwiched between the adsorption material layer 101 and the first substrate layer 103. The core detection unit layer 102 includes a second substrate layer 1021 and a detection layer disposed on the surface of the second substrate layer 1021. The detection layer is located between the second substrate layer 1021 and the adsorption material layer 101. The detection layer includes an induction antenna 1022, an induction chip 1023, and a detection area 1024. The induction antenna 1022 is respectively connected to the induction chip 1023 and the detection area 1024. The induction antenna 1022 is used to transmit a first radio frequency signal and receive a second radio frequency signal reflected from the detection area 1024. The induction chip 1023 is used to convert the second radio frequency signal into an electrical signal. The antenna group 2 is disposed on the outer surface of the first substrate layer 103. The controller 3 is respectively connected to the antenna group 2 and the terminal 4. The antenna group 2 is used to send the electrical signal to the controller 3. The controller 3 is used to judge the leakage situation according to the electrical signal. The terminal 4 is used to generate a prompt message according to the leakage situation.

[0047] The smart patch 1 in the embodiment of the present application is used to directly cover the area 1024 to be detected of the patient, such as Figure 1 shown in the figure, the smart patch 1 is adhered to the needle insertion position on the patient's arm. The adsorption material layer 101 of the smart patch 1 is in contact with the patient's skin and is responsible for fully adsorbing the leaked blood for the detection of the core detection unit layer 102. The adsorption material can be fiber cotton, polyethylene composite material, nanofiber composite material, etc.; Figure 3 This is a structural diagram of an adsorption material layer provided by an embodiment of the present application. Figure 4 As shown in the cross-sectional view of an adsorption material layer provided by an embodiment of the present application, the adsorption material layer 101 adopts a grid pattern, that is, the adsorption material areas and through holes are arranged at intervals. The grid-type adsorption material layer 101 can quickly adsorb the leaked blood, reduce the diffusion time of the blood in the detection area 1024, thereby improving the detection sensitivity, and the thin sheet structure of the adsorption material layer 101 can effectively improve its detection accuracy. The core detection unit layer 102 of the smart patch 1 is located between the adsorption material layer 101 and the first substrate layer 103. Figure 5 This is a structural diagram of a core detection unit layer provided by an embodiment of the present application, such as Figure 5As shown, the core detection unit layer 102 includes a second substrate layer 1021 and a detection layer. The detection layer includes an induction antenna 1022, an induction chip 1023, and a detection area 1024. The detection area 1024 is mainly used to sense radio frequency signals and detect changes in conductivity when blood leaks. The detection area 1024 is usually composed of special conductive materials or materials with specific electromagnetic properties. These materials have good response characteristics to radio frequency signals, and can ensure that the radio frequency signals emitted by the induction antenna 1022 form a stable electromagnetic field in this area, so as to accurately detect changes in conductivity. The following introduces the interaction principle of the detection layer: The induction antenna 1022 emits a first radio frequency signal, and the first radio frequency signal can form a specific electromagnetic field in the detection area 1024. Blood will affect this electromagnetic field. As a conductive liquid, blood has specific electromagnetic properties, such as dielectric constant and conductivity. When blood penetrates into the detection area 1024, it will change the electromagnetic properties of this area, resulting in changes in the radio frequency signals reflected from the detection area 1024, such as changes in characteristics such as the amplitude, phase, and frequency of the radio frequency signals. The induction antenna 1022 receives this changed second radio frequency signal. The induction chip 1023 is connected to the induction antenna 1022, and it converts the second radio frequency signal received by the induction antenna 1022 into an electrical signal. The first substrate layer 103 of the smart patch 1 serves as the basic support layer of the smart patch 1. The first substrate layer 103 can be made of materials such as polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene (PE), acrylonitrile-butadiene-styrene copolymer (ABS), and polypropylene (PP).

[0048] In the embodiment of the present application, the antenna group 2 is arranged on the outer surface of the first substrate layer 103 of the smart patch 1 for electrical signal transmission; the controller 3 is connected to the antenna group 2 and the terminal 4, and is responsible for signal processing and leakage judgment; the terminal 4 generates a prompt message according to the judgment result of the controller 3. Among them, the terminal 4 can be a tablet computer, a computer, a mobile phone, or a dedicated monitor (designed specifically for medical monitoring, with high-precision display and alarm functions), etc. The terminal 4 is mainly used for data display, alarm, sharing, storage and transmission of data information, etc.

[0049] A blood dialysis bleeding detection device provided in the implementation of the present application. The intelligent patch 1 is used to cover the area to be detected. The intelligent patch 1 includes a core detection unit layer 102. The induction antenna 1022, induction chip 1023 and detection area 1024 in the core detection unit layer 102 work together. The induction antenna 1022 emits a first radio frequency signal and receives a second radio frequency signal reflected by the detection area 1024. The induction chip 1023 converts the received second radio frequency signal into an electrical signal. The antenna group 2 sends the electrical signal to the controller 3. The controller 3 judges the leakage situation according to the electrical signal and controls the terminal 4 to generate a prompt message. The intelligent patch 1 adopts a non-powered method (that is, no built-in power supply is required), and its interaction method is radio frequency coupling technology. This detection method does not rely on optical signals and is not easily affected by changes in environmental humidity and light intensity, which can effectively avoid misjudgment and ensure the stability of detection. And the detection principle is not based on the blood parameters of a specific population, but uses the characteristic electrical signals generated by the interaction between radio frequency signals and blood for detection. Since the blood of different populations has consistency in the response to radio frequency signals, the device can be applied to a wider range of populations and is not affected by differences in blood viscosity and hemoglobin spectral characteristics, expanding the scope of application.

[0050] Based on the above embodiments, the detection layer of the present application embodiment further includes a detection strip 1025 respectively connected to the detection area 1024 and the induction antenna 1022. The detection strip 1025 is located at one end of the second substrate layer 1021, and multiple detection strips 1025 are arranged at intervals along the length direction of the second substrate layer 1021. The induction antenna 1022 is distributed in an S shape at the other end of the second substrate layer 1021.

[0051] The detection strip 1025 in the embodiment of the present application is a strip structure extending from the detection area 1024. As an extended part of the detection area 1024, it can enable the detection area 1024 to cover a larger area. This means that even if the position of blood penetration is slightly deviated from the detection area 1024, the detection strip 1025 can capture the signal, improving the detection sensitivity and being able to sense a wider potential bleeding area around the detection area 1024. Multiple detection strips 1025 are arranged at intervals along the length direction of the second substrate layer 1021, increasing the number of detection areas 1024. This layout enables even a small amount of blood penetration to be detected, improving the device's ability to detect early bleeding. The induction antenna 1022 is distributed in an S shape at the other end of the second substrate layer 1021. This distribution method allows the induction antenna 1022 to cover a larger area in a limited space, which helps to improve the efficiency of signal reception and ensure that the signal reflected from the detection area 1024 can be fully captured.

[0052] Based on the above embodiments, an adhesive layer is provided at the edge of the side of the adsorption material layer 101 away from the core detection unit layer 102, and a protective film 104 is pasted on the adhesive layer.

[0053] In the embodiments of the present application, the protective film 104 can be a release paper, which is pasted on the adhesive layer to protect the adhesive layer from being contaminated or prematurely pasted onto other objects before use. Release paper is a common material for the protective film 104, with a smooth surface and easy peel-off characteristics. When using the smart patch 1, simply tear off the release paper to expose the adhesive layer, which facilitates quickly pasting the smart patch 1 onto the patient's skin. The adhesive layer is located at the edge of the side of the adsorption material layer 101 away from the core detection unit layer 102. When using, tear off the protective film 104, and the smart patch 1 can be firmly pasted on the patient's skin, ensuring that the smart patch 1 will not easily shift or fall off during dialysis. Usually, a medical-grade adhesive is used, which has good biocompatibility and will not cause irritation or allergic reactions to the patient's skin, ensuring the safety of use.

[0054] Based on the above embodiments, Figure 6 is a structural diagram of an antenna group provided by the embodiments of the present application, Figure 7 is a cross-sectional view of an antenna group provided by the embodiments of the present application, as Figure 6 and Figure 7 shown, the antenna group 2 of the embodiments of the present application includes a restraint band, an antenna 203, a communication line 204, and a communication connector 205. The antenna 203 is embedded in the restraint band and covers above the core detection unit layer 102. One end of the communication line 204 is connected to the antenna 203, and the other end of the communication line 204 extends out of the restraint band and is connected to the communication connector 205. The communication connector 205 is connected to the controller 3.

[0055] The restraint band in the embodiments of the present application serves as the carrier of the antenna group 2. The restraint band is used to be fixed at the detection site of the patient, usually wound around the patient's arm to ensure that the antenna group 2 is closely attached directly above the core detection unit layer 102. The material of the restraint band usually has a certain elasticity to adapt to the curved surfaces of different parts. The antenna 203 is embedded in the restraint band and covers directly above the core detection unit layer 102, which can effectively reduce the interference of the human body on the electromagnetic wave transmission signal, strengthen the signal transmission and communication, and improve the stability and accuracy of detection. One end of the communication line 204 is connected to the antenna 203, and the other end extends out of the restraint band and is connected to the communication connector 205, which is used to transmit the electrical signal received from the antenna 203. The communication connector 205 is connected to the controller 3 to ensure that the signal can be stably transmitted to the controller 3 for further processing and analysis.

[0056] Based on the above embodiments, the restraint belt in the embodiments of the present application includes an inner restraint belt 201 and an outer restraint belt 202. An antenna 203 is buried between the inner restraint belt 201 and the outer restraint belt 202. One end of the inner restraint belt 201 is provided with a sticker belt 206, and the sticker belt 206 is used to bond with the outer restraint belt 202.

[0057] In the embodiments of the present application, a sandwich layer is formed between the inner restraint belt 201 and the outer restraint belt 202, and the antenna 203 is buried in this sandwich layer. This design can effectively protect the antenna 203 and prevent it from being physically damaged by the outside world. One end of the inner restraint belt 201 is provided with a sticker belt 206 for bonding with the outer restraint belt 202. This connection method usually uses Velcro (hook and loop tape) or other similar fastening designs, which is convenient for quickly fixing and adjusting the tightness of the restraint belt.

[0058] Based on the above embodiments, Figure 8 is a structural diagram of another blood dialysis bleeding detection device provided by the embodiments of the present application. As Figure 8 shown, the embodiments of the present application further include a data storage device 6 and a wireless router device 5. The data storage device 6 is connected to the terminal 4, and the controller 3 is connected to the terminal 4 through the wireless router device 5.

[0059] The data storage device 6 in the embodiments of the present application is connected to the terminal 4 and is used to store the detection data received by the terminal 4. It can store a large amount of historical data, which is convenient for medical staff to conduct long-term monitoring and analysis. The controller 3 is connected to the terminal 4 through the wireless router device 5 and is used to achieve wireless communication and data transmission to ensure that the detection data can be transmitted to the terminal 4 in real time and stably. The controller 3 is mainly composed of an upper shell, a functional board, a network port and a lower shell. One controller 3 can be connected to the antenna group 2 on multiple smart patches 1. The terminal 4 can display the label identification number, user name, detection status (normal, leakage and fault), usage time, etc. corresponding to the smart patch 1.

[0060] Figure 9 is a flowchart of a blood dialysis bleeding detection method provided by the embodiments of the present application. As Figure 9 shown, the blood dialysis bleeding detection method is applied to the above blood dialysis bleeding detection device and includes:

[0061] S10: Control the induction antenna to emit a first radio frequency signal to the detection area.

[0062] S11: If no electrical signal is received within a preset time period, determine that the smart patch or the antenna group has a fault and generate a fault prompt; wherein, the electrical signal is obtained by the induction chip converting the second radio frequency signal reflected by the detection area.

[0063] S12: If an electrical signal is received within a preset time period, judge the leakage situation according to the electrical signal, and generate a prompt message according to the leakage situation.

[0064] In step S10, the induction antenna can be periodically controlled to transmit a first radio frequency signal to the detection area, so as to achieve periodic detection.

[0065] In step S11, if no electrical signal is received within a preset time period, it is determined that the smart patch or the antenna group has a fault and a fault prompt is generated. This step is to monitor the working state of the device itself to ensure the normal operation of the device. A reasonable preset time period is set according to the normal signal transmission delay and response time of the device. A fault prompt message is generated to remind medical staff to check and repair the device in time.

[0066] In step S12, the electrical signal converted by the induction chip is analyzed, including characteristic parameters such as the amplitude, frequency, and phase of the signal; according to the preset judgment rule, the characteristic parameters of the electrical signal are compared with the normal range to determine whether blood penetration has occurred. If the characteristic parameters exceed the preset range, leakage occurs, and the prompt message is leakage; if the characteristic parameters do not exceed the preset range, no leakage occurs, and the prompt message is normal.

[0067] A blood dialysis blood leakage detection method provided in an embodiment of the present application is applied to the above-mentioned blood dialysis blood leakage detection device, and includes: controlling an induction antenna to transmit a first radio frequency signal to a detection area; if no electrical signal is received within a preset time period, determining that the smart patch or the antenna group has a fault and generating a fault prompt; wherein, the electrical signal is obtained by the induction chip converting a second radio frequency signal reflected by the detection area; if an electrical signal is received within a preset time period, the leakage situation is judged according to the electrical signal, and a prompt message is generated according to the leakage situation. The induction antenna transmits and receives radio frequency signals, the induction chip converts the received radio frequency signal into an electrical signal, the antenna group sends the electrical signal to the controller, and the controller judges the leakage situation according to the electrical signal and controls the terminal to generate a prompt message. The smart patch adopts a non-powered method (that is, no built-in power supply is required), and its interaction method is radio frequency coupling technology. This detection method does not rely on optical signals, is not easily affected by changes in environmental humidity and light intensity, can effectively avoid misjudgment and ensure the stability of detection. And the detection principle is not based on the blood parameters of a specific population, but uses the characteristic electrical signals generated by the interaction between radio frequency signals and blood for detection. Since the blood of different populations has consistency in the response to radio frequency signals, the device can be applied to a wider range of populations and is not affected by differences in blood viscosity and hemoglobin spectral characteristics, thus expanding the scope of application.

[0068] Based on the above embodiment, judging the leakage situation according to the electrical signal in the embodiment of the present application includes: preprocessing the electrical signal; extracting characteristic parameters from the preprocessed signal data; wherein, the characteristic parameters include amplitude characteristics, frequency characteristics, and phase characteristics; judging the leakage situation according to the characteristic parameters.

[0069] The preprocessing may include filtering, amplification, and normalization processes, etc. High-frequency noise and low-frequency interference in the electrical signal are removed, and the characteristic signals related to blood seepage are retained. Common filtering methods include low-pass filtering, high-pass filtering, and band-pass filtering, etc. The filtered electrical signal is amplified to increase the signal strength, facilitating subsequent feature extraction and analysis. The amplification factor is adjusted according to the actual signal strength and equipment requirements. The amplitude of the amplified electrical signal is adjusted to the same scale to eliminate the differences under different detection environments and conditions, improving the comparability and accuracy of the detection results.

[0070] In blood seepage detection, the presence of blood will change the electromagnetic characteristics of the detection area, resulting in a change in the amplitude of the reflected signal. The change in amplitude can be used as an important basis for judging blood seepage. The changes in different frequency components can reflect the change in the electromagnetic characteristics of the detection area, thereby judging the blood seepage situation. Blood penetration will cause a change in the electromagnetic characteristics of the detection area, resulting in a phase shift of the reflected signal. The change in the phase difference is one of the important characteristics for judging blood seepage.

[0071] Extracting characteristic parameters from the preprocessed signal data includes: If the preprocessed signal data is a periodic signal, the maximum and minimum values of the signal are taken in the time domain for the preprocessed signal data, and half of the difference between the maximum and minimum values is used as the amplitude characteristic; if the preprocessed signal data is a non-periodic signal, the root mean square of the amplitudes of all sampling points is calculated as the amplitude characteristic; the preprocessed signal data is subjected to a fast Fourier transform to obtain a frequency spectrum, and the main frequency corresponding to the maximum amplitude in the frequency spectrum is extracted as the frequency characteristic; the preprocessed signal data is subjected to a Hilbert transform to obtain an analytic signal, and the ratio of the real part to the imaginary part of the analytic signal is calculated as the phase characteristic.

[0072] Correspondingly, judging the leakage situation based on the characteristic parameters includes: If the amplitude characteristic, frequency characteristic, and phase characteristic are all within their respective preset ranges, the leakage situation is no leakage; if at least one of the amplitude characteristic, frequency characteristic, and phase characteristic is not within the corresponding preset range, the leakage situation is leakage. By considering the amplitude characteristic, frequency characteristic, and phase characteristic simultaneously, the signal can be analyzed from multiple dimensions, more comprehensively reflecting the situation of the detection area. This method can effectively avoid misjudgment or missed judgment caused by the change of a single characteristic, improving the accuracy of the detection results. If at least one of the amplitude characteristic, frequency characteristic, and phase characteristic is not within the corresponding preset range, it is determined that leakage has occurred. This logic can promptly capture any abnormal change in a characteristic parameter, even if other characteristic parameters are still normal.

[0073] Finally, the present application also provides an embodiment corresponding to a computer-readable storage medium. A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps recorded in the blood dialysis bleeding detection method in the above method embodiment are implemented.

[0074] It can be understood that if the method in the above embodiments is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and executes all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs that can store program codes.

[0075] The above has introduced in detail a blood dialysis bleeding detection device, method, and medium provided by the present application. The various embodiments in the specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can still be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0076] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article, or device including the said element.

Claims

1. A hemodialysis bleeding detection device, characterized in that, Including: Intelligent sticker (1), antenna group (2), controller (3) and terminal (4); The intelligent sticker (1) is used to cover the area to be detected. The intelligent sticker (1) includes an adsorption material layer (101), a core detection unit layer (102) and a first substrate layer (103). The core detection unit layer (102) is sandwiched between the adsorption material layer (101) and the first substrate layer (103). The core detection unit layer (102) includes a second substrate layer (1021) and a detection layer disposed on the surface of the second substrate layer (1021). The detection layer is located between the second substrate layer (1021) and the adsorption material layer (101). The detection layer includes an induction antenna (1022), an induction chip (1023) and a detection area (1024). The induction antenna (1022) is respectively connected to the induction chip (1023) and the detection area (1024). The induction antenna (1022) is used to transmit a first radio frequency signal and receive a second radio frequency signal reflected from the detection area (1024). The induction chip (1023) is used to convert the second radio frequency signal into an electrical signal. The antenna group (2) is disposed on the outer surface of the first substrate layer (103). The controller (3) is respectively connected to the antenna group (2) and the terminal (4). The antenna group (2) is used to send the electrical signal to the controller (3). The controller (3) is used to judge the leakage situation according to the electrical signal. The terminal (4) is used to generate a prompt message according to the leakage situation.

2. The hemodialysis blood leakage detection device according to claim 1, wherein The detection layer further includes a detection strip (1025) respectively connected to the detection area (1024) and the induction antenna (1022). The detection strip (1025) is located at one end of the second substrate layer (1021), and a plurality of the detection strips (1025) are arranged at intervals along the length direction of the second substrate layer (1021). The induction antenna (1022) is distributed in an S shape at the other end of the second substrate layer (1021).

3. The hemodialysis blood leakage detection device according to claim 1, wherein An adhesive layer is provided at the edge of the side of the adsorption material layer (101) away from the core detection unit layer (102), and a protective film (104) is pasted on the adhesive layer.

4. The hemodialysis blood leakage detection device according to claim 1, characterized in that, The antenna group (2) includes a binding band, an antenna (203), a communication line (204) and a communication joint (205). The antenna (203) is buried in the binding band, and the antenna (203) covers the core detection unit layer (102). One end of the communication line (204) is connected to the antenna (203), and the other end of the communication line (204) extends out of the binding band and is connected to the communication joint (205). The communication joint (205) is connected to the controller (3).

5. The hemodialysis blood leakage detection device according to claim 4, characterized in that, The restraint band includes an inner restraint band (201) and an outer restraint band (202). The antenna (203) is buried between the inner restraint band (201) and the outer restraint band (202). One end of the inner restraint band (201) is provided with a sticker band (206), and the sticker band (206) is used for bonding with the outer restraint band (202).

6. The hemodialysis blood leakage detection device according to claim 1, wherein, It further includes a data storage device (6) and a wireless router device (5). The data storage device (6) is connected to the terminal (4), and the controller (3) is connected to the terminal (4) through the wireless router device (5).

7. A method for detecting blood leakage in hemodialysis, characterized in that, Applied to the hemodialysis blood leakage detection device according to any one of claims 1 to 6, including: Controlling the induction antenna (1022) to transmit a first radio frequency signal to the detection area (1024); If no electrical signal is received within a preset time period, it is determined that the intelligent patch (1) or the antenna group (2) has a fault and a fault prompt is generated; wherein, the electrical signal is obtained by the induction chip (1023) converting the second radio frequency signal reflected by the detection area (1024). If an electrical signal is received within a preset time period, the leakage situation is judged according to the electrical signal, and a prompt message is generated according to the leakage situation.

8. The blood dialysis bleeding detection method according to claim 7, wherein Judging the leakage situation according to the electrical signal includes: Preprocessing the electrical signal; Extracting characteristic parameters from the preprocessed signal data; wherein, the characteristic parameters include amplitude characteristics, frequency characteristics and phase characteristics; Judging the leakage situation according to the characteristic parameters.

9. The blood dialysis bleeding detection method according to claim 8, wherein, Extracting characteristic parameters from the preprocessed signal data includes: If the preprocessed signal data is a periodic signal, the maximum value and the minimum value of the signal are taken in the time domain for the preprocessed signal data, and half of the difference between the maximum value and the minimum value is used as the amplitude characteristic; If the preprocessed signal data is a non-periodic signal, the root mean square of the amplitudes of all sampling points is calculated as the amplitude characteristic; The preprocessed signal data is subjected to a fast Fourier transform to obtain a frequency spectrum, and the main frequency corresponding to the maximum amplitude in the frequency spectrum is extracted as the frequency characteristic; The preprocessed signal data is subjected to a Hilbert transform to obtain an analytic signal, and the ratio of the real part to the imaginary part of the analytic signal is calculated as the phase characteristic; Correspondingly, judging the leakage situation according to the characteristic parameters includes: If the amplitude characteristic, the frequency characteristic and the phase characteristic are all within their respective preset ranges, the leakage situation is that no leakage has occurred; If at least one of the amplitude characteristic, the frequency characteristic and the phase characteristic is not within the corresponding preset range, the leakage situation is that leakage has occurred.

10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the hemodialysis blood leakage detection method according to any one of claims 7 to 9 are implemented.

Images