Intelligent auxiliary system for patient with central venous catheter indwelling

Abstract

The invention relates to the technical field of medical intellectualization, in particular to an intelligent auxiliary system for a central venous catheter indwelling patient, which comprises a cloud platform unit and an individual unit, the individual unit is in signal connection with a bracelet, the bracelet comprises a shell, one end of the shell is fixedly connected with one end of a telescopic band, and the other end of the telescopic band is fixedly connected with a buckle. A buckle belt cover is arranged at the end, away from the telescopic belt, of the shell, a driving assembly is arranged on the inner wall of the shell, a rotating assembly is arranged on the driving assembly, a sheet type pressure sensor is fixedly connected to the outer wall of the inner side of the shell, and a voice assembly and a button assembly are arranged on the outer wall of the outer side of the shell. The wearable bracelet is designed to monitor the physical sign data of the patient in real time, the main control system is combined, the patient is reminded of catheter maintenance time, the physical sign data of the patient is stored, the safety and health of the patient are ensured, and convenience is improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent medical technology, specifically to an intelligent auxiliary system for patients with indwelling central venous catheters. Background Technology

[0002] Peripherally Inserted Central Catheter (PICC) is a method of providing patients with medium- to long-term intravenous infusion therapy. The catheter is inserted through a vein in the cubital fossa (basilic vein, median cubital vein, cephalic vein), travels along the blood vessel, and finally reaches the superior vena cava.

[0003] However, traditional PICC (Peripherally Inserted Central Catheter) maintenance relies on follow-up visits via telephone or in person, and patients need to come to the hospital for vital sign monitoring. This has gradually exposed the inefficiency of traditional PICC systems, failing to meet the demands of modern medicine for efficient, accurate, and timely management. Therefore, we urgently need to propose an intelligent auxiliary system for patients with indwelling central venous catheters. This system aims to optimize the PICC maintenance process, improve follow-up efficiency, and ensure patient safety and health through intelligent means. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides an intelligent auxiliary system for patients with indwelling central venous catheters. This system uses a wearable wristband to monitor key vital signs and provide catheter maintenance reminders in real time, ensuring the patient's safety and health.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A smart auxiliary system for patients with indwelling central venous catheters includes a cloud platform unit for storing and transmitting patient information data and an individual unit for intelligently monitoring the patient's catheter status and providing maintenance reminders. The individual unit is signal-connected to a wristband, which includes a shell. The shell is a circular ring structure that is not connected end to end. One end of the outer shell is fixedly connected to one end of the telescopic belt, and the other end of the telescopic belt is fixedly connected to a buckle. The end of the outer shell away from the telescopic belt is provided with a buckle cover. The buckle cover includes a fixing block and a disassembly block. The fixing block is fixedly connected to the outer shell, and the disassembly block is detachably connected to the fixing block. A groove corresponding to the shape of the telescopic belt is opened at the connection between the disassembly block and the fixing block. The inner wall of the outer shell is provided with a drive assembly near the fixed block. The drive assembly is provided with a rotating assembly with a corresponding buckle shape. When the drive assembly is started and rotates in the forward direction, the rotating assembly drives the buckle to move and tighten the telescopic belt. Conversely, when the drive assembly rotates in the reverse direction, it stretches and relaxes the telescopic belt. A plate-type pressure sensor is fixedly connected to the outer wall inside the housing, and a voice component for voice interaction with the patient and a button component for adjusting the tension of the telescopic belt by pressing the signal are provided on the outer wall outside the housing.

[0006] The technical principle of the above solution is as follows: the wristband is designed as an individual unit for direct interaction with the patient; the wristband automatically adjusts the tension of the elastic band by setting up drive and rotation components; the tension of the elastic band, combined with the detection of the plate pressure sensor, enables real-time blood pressure monitoring of the patient; in addition, the wristband is also equipped with voice and button components to enhance the interactivity of the system.

[0007] The above approach has the following beneficial effects: 1. This solution, through a wearable wristband design and the collaborative work of cloud platform units and individual units, enables real-time monitoring and efficient management of patients' key vital signs. This not only significantly improves the maintenance efficiency of PICC lines but also ensures that patients receive timely and necessary medical reminders, thereby effectively reducing medical risks caused by improper maintenance.

[0008] 2. The wristband in this solution is specially designed with a voice component. This voice interaction function is especially user-friendly for elderly patients. The high sensitivity of the microphone can clearly capture the soft whispers of elderly patients, allowing them to complete various operations through voice commands without much effort. This ensures clear transmission of sound information, and even elderly patients with slightly weak hearing can easily understand it. This simplifies the operation process, reduces the difficulty of use, and thus improves the user experience.

[0009] 3. This solution, through the design of a retractable strap that can periodically adjust its tightness, combined with the detection of a plate-type pressure sensor, can accurately collect the patient's pulse wave signal, thereby estimating key vital signs such as blood pressure. This improves the patient's wearing comfort and the accuracy of the monitoring data, providing important reference information for medical staff. It not only enhances the patient's user experience but also strengthens the system's practicality and reliability.

[0010] Furthermore, the outer shell is made of a material with plasticity and shape memory properties.

[0011] Beneficial effects: The use of this material allows the wristband to better adapt to different patients' wrist sizes and shapes, providing greater wearing comfort. The shape memory function ensures that the wristband can maintain its good shape even after wearing for a long time, and will not lose its original fit due to frequent adjustments or slight changes in the patient's wrist. This not only improves the user experience for patients, but also helps ensure that the sensors on the wristband can accurately and stably collect the patient's vital signs data.

[0012] Furthermore, the rotating assembly includes a sleeve rotatably connected to the inner wall of the housing, the sleeve being hollow inside, and the driving assembly includes a motor fixedly connected to the inner wall of the housing, the motor being located inside the sleeve, the output shaft of the motor being coaxially and fixedly connected to the sleeve, and a corresponding buckle groove being provided on the outer wall of the sleeve.

[0013] Beneficial effects: When the motor starts and rotates forward, the sleeve rotates accordingly, and its groove tightly engages the buckle, causing it to move together, thus tightening the elastic band. Conversely, when the motor rotates in the reverse direction, the sleeve rotates in the opposite direction, the groove releases its grip on the buckle, and the elastic band loosens. This not only achieves automatic adjustment and fixation when wearing the bracelet but also greatly improves the convenience and comfort of wearing it. Patients do not need to laboriously adjust the tightness of the bracelet manually; they only need to control the rotation of the motor through simple operation. In addition, this automatic adjustment method ensures that the bracelet always fits snugly against the patient's wrist, thereby improving the accuracy of vital sign data detection.

[0014] Furthermore, the voice component includes a microphone and a speaker, both of which are embedded in the outer wall of the housing.

[0015] Beneficial Effects: This design allows patients to interact directly with the wristband via voice, without the need for other assistive devices. The microphone receives the patient's voice commands or inquiries, while the speaker plays system prompts, health education content, or other information requested by the patient. This voice interaction method not only improves ease of use but is also particularly suitable for patients with poor eyesight or limited operational skills, significantly enhancing the user experience. Furthermore, voice interaction can increase patient engagement and compliance to some extent, thereby contributing to better management of the patient's health status.

[0016] Furthermore, the button assembly includes a retractable button and a release button embedded in the outer wall of the housing.

[0017] Beneficial Effects: The inclusion of tightening and loosening buttons allows patients to easily adjust the tightness of the bracelet according to their individual comfort and needs. This personalized adjustment not only enhances wearing comfort but also ensures the bracelet's stability and adaptability in various activity scenarios. By providing a convenient adjustment method, the intelligent assistive system of this invention helps improve patient compliance. Patients are more willing to wear a comfortable and easily adjustable bracelet, thus being more receptive to the system's monitoring and reminders, and consequently, better managing their health.

[0018] Furthermore, the cloud platform unit includes an information receiving module, a transaction reminder module, a cloud follow-up module, and an information sending module; The information receiving module is used to establish a database corresponding to each body unit, assign an identifier to each database, and receive information uploaded by each body unit in real time and store it in the corresponding database. The data in the database includes the patient's basic information, medical history records, physical signs information, and catheter maintenance logs. The transaction reminder module is used to extract catheter type, last maintenance time and doctor's recommended maintenance cycle data from catheter maintenance logs in each database, calculate the specific date of the next maintenance, and send a signal to the information sending unit that the patient needs to go to the hospital for catheter maintenance in a timely manner, along with a unique identifier, when the maintenance time date is reached or approaching. The cloud follow-up module is used to receive information search requests initiated by individual units or external systems. The information search request contains the identifier of the search object. Then, through efficient cloud technology, it locates and extracts the information in the database corresponding to the identifier, and then packages and transmits the information. The information sending module is used to receive all information to be sent from other modules within the cloud platform unit, and send the information to the corresponding individual unit according to the identifier.

[0019] Beneficial effects: The information receiving module enables centralized management and efficient use of patients' medical information; the task reminder module ensures that patients do not miss important medical maintenance due to forgetfulness or negligence, thereby reducing the medical risks caused by improper catheter maintenance; the cloud follow-up module enables medical staff or patients' families to obtain the latest medical information of patients anytime and anywhere, providing strong support for timely and effective medical decision-making.

[0020] Furthermore, in the information transmission module, the information content is first encoded into a signal format for transmission. Then, the identifier is parsed and converted into a specific signal receiving address for the corresponding individual unit. Based on this receiving address, the signal containing the information or data is transmitted. To ensure the timeliness and reliability of the information, the information transmission module employs a multi-path redundant transmission strategy.

[0021] Beneficial effects: The multi-path redundancy transmission strategy ensures secure information delivery even when the network is unstable or malfunctions. The parsing and processing of identifiers ensures accurate delivery of information to the target individual unit. The efficient operation of the information transmission module enables the rapid and accurate transmission of information within the cloud platform unit to each individual unit, thereby improving the overall system's operational efficiency and response speed.

[0022] Furthermore, the individual unit includes an individual receiving module, a voice playback module, a voice acquisition module, an adjustment module, a drive module, a pressure acquisition module, and an information uploading module; The individual receiving module is used to receive signals from the information sending module of the cloud platform unit. After receiving the signal, the individual receiving module will start the decoding process to restore the signal to the original information and transmit it. The voice playback module is used to receive information from the individual receiving module and transmit the information to the speaker for playback. The played voice information includes answers to questions asked by patients and health knowledge about the maintenance of central venous catheters. The voice acquisition module is used to collect the patient's speech through a microphone, recognize the collected speech, and convert it into corresponding command signals to be transmitted to the information upload module. The adjustment module is used to receive signals transmitted from each button and convert them into corresponding drive signals according to the signal type and transmit them to the drive module. When it receives the signal transmitted from the pressed contract button, the adjustment module converts it into a signal to drive the motor to rotate in the forward direction and transmits it. When it receives the signal transmitted from the pressed release button, the adjustment module converts it into a signal to drive the motor to rotate in the reverse direction. The drive module is used to drive the motor to rotate; The pressure acquisition module is used to acquire the patient's pressure data through a chip pressure sensor and calculate the patient's blood pressure data using the oscillometric method. The information upload module is used to receive blood pressure data collected by the pressure acquisition module and upload this blood pressure data to the main platform unit.

[0023] Beneficial Effects: Through the voice playback and data acquisition module, patients can directly interact with the wristband via voice, obtaining necessary information or issuing commands without complex operations. The design of the adjustment and drive modules allows patients to adjust the wristband's tightness through simple button operations, improving ease of use and practicality. The design of the individual receiving module and decoding process ensures that the wristband can accurately receive instructions or data from the cloud and restore them to their original form for processing. Furthermore, the individual unit can receive the latest health information on central venous catheter maintenance, which is then broadcast through the voice playback module. By listening to voice guidance, patients can better understand and perform the correct catheter maintenance procedures, reducing complications caused by improper operation, such as infection and thrombosis, thereby improving self-care ability and quality of life. For healthcare personnel, the voice playback module provides standardized training materials, helping to unify nursing standards, reduce nursing differences caused by individual experience variations, and alleviate the burden of repetitive verbal instruction, thus improving work efficiency. At the same time, by regularly updating the health knowledge base, the individual units representing patients can ensure that the content played keeps up with medical advancements, enabling patients and their families to access the most cutting-edge knowledge on catheter maintenance, thereby promoting health awareness and disease prevention.

[0024] Furthermore, the voice playback module also includes language selection and speech rate adjustment functions. When the information received by the receiving template is an emergency reminder, the voice playback module will automatically activate the high volume mode.

[0025] Beneficial effects: Users can choose the language that best suits them for information playback based on their language preferences or comprehension abilities, thereby understanding the information content more accurately, improving ease of use and satisfaction, enabling the system to serve a wider range of users, and ensuring barrier-free information delivery regardless of their language, thus enhancing the system's international competitiveness.

[0026] Furthermore, the drive module has a preset detection cycle based on the patient's actual age, symptoms, and health status. The drive module sends a drive signal with a fixed drive power to the motor according to the time of the detection cycle.

[0027] Beneficial effects: By pre-setting testing cycles that match the patient's age, condition, and health status, the system can provide more personalized medical care services. Different patients have different needs for catheter maintenance due to their physiological and pathological differences. This ensures that each patient receives the most suitable care plan. By precisely controlling the testing cycle and drive power, the system can ensure that the catheter is always in good working condition, reducing the risk of complications such as catheter blockage, dislodgement, or infection.

[0028] Additional aspects and advantages of the 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

[0029] Figure 1 This is a schematic diagram of the overall structure of the wristband in an embodiment of the intelligent auxiliary system for patients with central venous catheter placement according to the present invention; Figure 2 This is a frontal sectional view of the rotating component in an embodiment of the intelligent auxiliary system for patients with indwelling central venous catheters of the present invention. Figure 3 This is a schematic diagram of the operation of the cloud platform unit in an embodiment of the intelligent auxiliary system for patients with central venous catheter placement of the present invention; Figure 4 This is a schematic diagram of the operation of an individual unit in an embodiment of the intelligent auxiliary system for patients with indwelling central venous catheters of the present invention.

[0030] The reference numerals in the accompanying drawings include: 1. Housing; 2. Telescopic belt; 3. Buckle; 4. Buckle cover; 401. Fixing block; 402. Removal block; 5. Motor; 6. Sleeve; 7. Groove; 8. Microphone; 9. Speaker; 10. Retraction button; 11. Release button; 12. Plate pressure sensor. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 based on the specific circumstances.

[0034] The following detailed description illustrates the specific implementation method: Example

[0035] As attached Figure 1 and Figure 2 As shown: A smart auxiliary system for patients with indwelling central venous catheters includes a cloud platform unit for storing and transmitting patient information data and an individual unit for intelligently monitoring the patient's catheter status and providing maintenance reminders. The individual unit is signal-connected to a wristband. The wristband includes a shell 1, which is a circular ring structure with no connection at the ends. The shell 1 is made of a material with plasticity and shape memory function. This material design enables the wristband to have excellent flexibility, allowing it to fit snugly against the patient's wrist. In addition, it allows the wristband to adapt to minor changes in the patient's wrist during wear, such as swelling or thinning, thereby effectively reducing discomfort caused by prolonged wear.

[0036] One end of the outer shell 1 is fixedly connected to one end of the elastic band 2 by screws. The other end of the elastic band 2 is fixedly connected to a buckle 3 by screws. A buckle cover 4 is located at the end of the outer shell 1 away from the elastic band 2. The buckle cover 4 includes a fixing block 401 and a disassembly block 402. The design of the buckle cover 4 enhances the stability and convenience of wearing the bracelet. The fixing block 401 is fused to the outer shell 1, and the disassembly block 402 is detachably connected to the fixing block 401. A groove 7 corresponding to the shape of the elastic band 2 is provided at the connection between the disassembly block 402 and the fixing block 401. When the bracelet needs to be worn, the patient needs to stretch the elastic band 2, remove the disassembly block 402, insert the buckle 3 into the outer shell 1, and then tighten the disassembly block 402 to form a complete bracelet. When the bracelet needs to be removed, simply open the disassembly block 402 and remove the buckle 3. This improves the user experience and stability, making the bracelet less likely to slip off.

[0037] like Figure 2 As shown, a motor 5 is fixedly connected inside the outer casing 1. The output shaft of the motor 5 is fixedly connected to a hollow sleeve 6 via a coupling. The sleeve 6 encloses the motor 5 inside. The bottom end of the sleeve 6 is rotatably connected to the inner wall of the outer casing 1 via a bearing. A support rod is fused to the top end of the sleeve 6. The end of the support rod away from the sleeve 6 is rotatably connected to the inner wall of the outer casing 1 via a bearing. A corresponding slot for the buckle 3 is also provided on the outer wall of the outer side of the sleeve 6. Correspondingly, a plate pressure sensor 12 is fixedly connected to the outer wall of the inner ring surface of the outer casing 1 via screws. The plate pressure sensor 12 adopts the oscillometric principle to simulate the measurement method of a cuff blood pressure monitor: the motor 5 is driven to rotate. After the buckle 3 is inserted into the slot, the rotation of the motor 5 will first drive the sleeve 6 to rotate. Then, due to the design of the slot, the buckle 3 and the telescopic band 2 will move with the rotation of the motor 5 to tighten the telescopic band 2. Subsequently, the motor 5 will also drive the buckle 3 and the telescopic band 2 in the opposite direction to loosen them. The pulse wave signal is collected by the pressure sensor. As the elastic band 2 gradually loosens, the pressure gradually decreases, reaching its maximum amplitude at the mean pressure, and then decays as the pressure continues to decrease. Based on the dynamic relationship between these pulse wave amplitudes and cuff pressure, the patient's blood pressure can be estimated.

[0038] A microphone 8 and a speaker 9 are embedded in the outer wall of the outer casing 1. The microphone 8 is used to collect the patient's voice, and the speaker 9 is used to play the sound. The microphone 8, with its high sensitivity, can accurately collect the patient's voice commands, even the soft whispers of elderly patients can be clearly captured. The speaker 9, with its excellent sound quality and volume control capabilities, ensures clear transmission of sound information, making it easy for even elderly patients with slightly impaired hearing to understand. This design simplifies the operation process; elderly patients no longer need to laboriously read the screen or operate complex buttons, but can complete various operations simply through voice commands, thereby reducing the difficulty of use and improving the user experience.

[0039] In addition, to improve wearing comfort and adapt to different wrist sizes, a tightening button 10 and a loosening button 11 are embedded on the outer side of the outer wall of the outer shell 1. These are used to adjust the overall tightness of the bracelet. When a patient wears the bracelet for the first time or needs to adjust the tightness of the bracelet to adapt to different activity scenarios, the tightness of the bracelet can be adjusted by pressing the tightening button 10 or the loosening button 11. When the tightening button 10 is pressed, the telescopic band 2 will tighten under the forward rotation drive of the motor 5, making the bracelet fit the user's wrist more closely. When the loosening button 11 is pressed, the telescopic band 2 will loosen under the forward rotation drive of the motor 5, making the bracelet looser. Example

[0040] As attached Figure 3 As shown, the difference from Embodiment 1 is that the cloud platform unit includes an information receiving module, a transaction reminder module, a cloud follow-up module, and an information sending module.

[0041] The information receiving module establishes a database corresponding to each body unit, assigns an identifier to each database, and receives information uploaded by each body unit in real time and stores it in the corresponding database. The data in the database includes the patient's basic information, medical history records, physical signs information, and catheter maintenance logs.

[0042] The transaction reminder module extracts catheter type, last maintenance time, and doctor-recommended maintenance cycle data from catheter maintenance logs in various databases, calculates the specific date of the next maintenance, and sends a signal to the information sending unit when the maintenance date is reached or approaching, indicating that the patient needs to go to the hospital for catheter maintenance, along with a unique identifier. This mechanism helps ensure that patients do not miss important medical maintenance.

[0043] The cloud follow-up module receives information search requests initiated by individual units or external systems. These requests contain identifiers of the search objects. Then, through efficient cloud technology, it locates and extracts the information from the database corresponding to the identifiers. Subsequently, the information is packaged and transmitted.

[0044] The information transmission module first encodes the information content into a signal format for transmission, then parses the identifier, converts it into a specific signal receiving address for the corresponding individual unit, and transmits the signal containing information or data according to the receiving address. To ensure the timeliness and reliability of the information, the information transmission module adopts a multi-path redundancy transmission strategy, which guarantees the secure delivery of information even in the event of network instability. Example

[0045] As attached Figure 4 As shown, the difference from Embodiment 2 is that the individual unit includes an individual receiving module, a voice playback module, a voice acquisition module, an adjustment module, and a driving module.

[0046] The individual receiving module receives signals from the information sending module of the cloud platform unit. After receiving the signal, the individual receiving module will start the decoding process to restore the signal to the original information and transmit it.

[0047] The voice playback module includes language selection and speech rate adjustment functions, which can adjust the language and speech rate according to the patient's actual needs. The voice playback module receives information from the individual receiving module and transmits the information to the speaker 9 for playback. The played voice content includes answers to the patient's questions and health knowledge about the maintenance of the central venous catheter, such as regularly observing the condition of the insertion site, paying attention to any abnormal manifestations such as redness, swelling, pain, bleeding or leakage, and keeping the insertion site clean and dry. This helps patients live a more comfortable life while having a central venous catheter in place. When the information received by the receiving module is an emergency reminder, the voice playback module will automatically activate a high volume mode.

[0048] The voice acquisition module is used to collect the patient's spoken words through the microphone 8, recognize the collected words, and convert them into corresponding command signals that are transmitted to the information upload module. Furthermore, the voice acquisition module enables the patient to express information such as catheter status, puncture site comfort, and physical condition through voice, which is then converted into data and transmitted to the information upload module.

[0049] The adjustment module is used to receive signals transmitted by each button and convert them into corresponding drive signals according to the signal type and transmit them to the drive module. When the signal transmitted by pressing the contraction button 10 is received, the adjustment module converts it into a signal to drive the motor 5 to rotate in the forward direction and transmits it. When the signal transmitted by pressing the release button 11 is received, the adjustment module converts it into a signal to drive the motor 5 to rotate in the reverse direction and transmits it.

[0050] The drive module has a preset detection cycle based on the patient's actual age, symptoms and health status. The detection cycle is preset and determined by medical staff. The drive module sends a fixed drive power drive signal to the motor 5 to drive the motor 5 to rotate according to the detection cycle time.

[0051] The pressure acquisition module collects the patient's pressure data through a chip pressure sensor 12 and calculates the patient's blood pressure data using oscillometric methods. Since hypertension and abnormal pulse may be risk factors for thrombosis, the design to monitor pulse and blood pressure allows medical staff to detect and prevent thrombosis in a timely manner, avoiding complications such as catheter blockage. Furthermore, an increased pulse and decreased blood pressure may be early signs of infection; timely detection and treatment of infection can maintain the patency of the PICC catheter and extend its lifespan. The information upload module receives blood pressure data collected by the pressure acquisition module and information data from the voice acquisition module, and uploads this blood pressure data and information data to the main platform unit.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An intelligent assistant system for central venous catheter indwelling patient, characterized in that, It includes a cloud platform unit for storing and transmitting patient information data and an individual unit for intelligently monitoring the patient's catheter status and providing maintenance reminders. The individual unit is connected to a wristband, which includes a shell (1) and the shell (1) is a circular ring structure that is not connected end to end. One end of the outer shell (1) is fixedly connected to one end of the telescopic belt (2), and the other end of the telescopic belt (2) is fixedly connected to a buckle (3). The outer shell (1) is provided with a buckle cover (4) at the end away from the telescopic belt (2). The buckle cover (4) includes a fixing block (401) and a disassembly block (402). The fixing block (401) is fixedly connected to the outer shell (1), and the disassembly block (402) is detachably connected to the fixing block (401). A groove (7) corresponding to the shape of the telescopic belt (2) is provided at the connection between the disassembly block (402) and the fixing block (401). The inner wall of the outer shell (1) is provided with a drive assembly near the fixed block (401). The drive assembly is provided with a rotating assembly corresponding to the shape of the buckle (3). When the drive assembly is started and rotates in the forward direction, the rotating assembly drives the buckle (3) to move and tighten the telescopic belt (2). Conversely, when the drive assembly rotates in the reverse direction, it stretches and relaxes the telescopic belt (2). A plate pressure sensor (12) is fixedly connected to the outer wall inside the housing (1), and a voice component for voice interaction with the patient and a button component for adjusting the tightness of the telescopic belt (2) by pressing the signal are provided on the outer wall outside the housing (1).

2. The central venous catheter indwelling patient intelligent assistant system according to claim 1, characterized in that, The outer shell (1) is made of a material with plasticity and shape memory function.

3. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 2, characterized in that, The rotating assembly includes a sleeve (6) rotatably connected to the inner wall of the outer shell (1). The sleeve (6) is hollow inside. The driving assembly includes a motor (5) fixedly connected to the inner wall of the outer shell (1). The motor (5) is located inside the sleeve (6). The output shaft of the motor (5) is coaxially fixedly connected to the sleeve (6). A slot corresponding to the buckle (3) is provided on the outer wall of the sleeve (6).

4. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 3, characterized in that, The voice component includes a microphone (8) and a speaker (9), both of which are embedded in the outer wall of the housing (1).

5. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 4, characterized in that, The button assembly includes a retractable button (10) and a release button (11) embedded in the outer wall of the housing (1).

6. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 5, characterized in that, The cloud platform unit includes an information receiving module, a transaction reminder module, a cloud follow-up module, and an information sending module; The information receiving module is used to establish a database corresponding to each body unit, assign an identifier to each database, and receive information uploaded by each body unit in real time and store it in the corresponding database. The data in the database includes the patient's basic information, medical history records, physical signs information, and catheter maintenance logs. The transaction reminder module is used to extract catheter type, last maintenance time and doctor's recommended maintenance cycle data from catheter maintenance logs in each database, calculate the specific date of the next maintenance, and send a signal to the information sending unit that the patient needs to go to the hospital for catheter maintenance in a timely manner, along with a unique identifier, when the maintenance time date is reached or approaching. The cloud follow-up module is used to receive information search requests initiated by individual units or external systems. The information search request contains the identifier of the search object. Then, through efficient cloud technology, it locates and extracts the information in the database corresponding to the identifier, and then packages and transmits the information. The information sending module is used to receive all information to be sent from other modules within the cloud platform unit, and send the information to the corresponding individual unit according to the identifier.

7. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 6, characterized in that, In the information sending module, the information content is first encoded into a signal format for transmission. Then, the identifier is parsed and converted into a specific signal receiving address for the corresponding individual unit. The signal containing information or data is then sent according to the receiving address. The information sending module adopts a multi-path redundant transmission strategy.

8. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 7, characterized in that, The individual unit includes an individual receiving module, a voice playback module, a voice acquisition module, an adjustment module, a drive module, a pressure acquisition module, and an information uploading module; The individual receiving module is used to receive signals from the information sending module of the cloud platform unit. After receiving the signal, the individual receiving module will start the decoding process to restore the signal to the original information and transmit it. The voice playback module is used to receive information from the individual receiving module and transmit the information to the speaker (9) for playback. The voice information played includes answers to questions asked by the patient and health knowledge about the maintenance of the central venous catheter. The voice acquisition module is used to acquire the patient's speech through the microphone (8), identify the acquired speech, and convert it into a corresponding instruction signal to be transmitted to the information upload module. The adjustment module is used to receive the signals transmitted by each button and convert them into corresponding drive signals according to the signal type and transmit them to the drive module. When the signal transmitted by the pressed contraction button (10) is received, the adjustment module converts it into a signal to drive the motor (5) to rotate in the forward direction and transmits it. When the signal transmitted by the pressed release button (11) is received, the adjustment module converts it into a signal to drive the motor (5) to rotate in the reverse direction. The drive module is used to drive the motor (5) to rotate; The pressure acquisition module is used to acquire the patient's pressure data through a chip pressure sensor (12) and calculate the patient's blood pressure data by oscillometric method; The information upload module is used to receive blood pressure data collected by the pressure acquisition module and upload this blood pressure data to the main platform unit.

9. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 8, characterized in that, The voice playback module also includes language selection and speech rate adjustment functions. When the received information is an emergency reminder, the voice playback module will automatically enable high volume mode.

10. The intelligent auxiliary system for patients with indwelling central venous catheters according to claim 9, characterized in that, The drive module has a preset detection cycle based on the patient's actual age, symptoms and health status. The drive module sends a fixed drive power drive signal to the motor (5) according to the time of the detection cycle.

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