A dynamic pressure feedback wristwatch based on hemodialysis catheter securement

Abstract

The present application belongs to the field of health care technology, and particularly relates to a dynamic pressure feedback wristwatch based on hemodialysis catheter fixation, which comprises a wristwatch main body formed by the buckling of an upper watch case and a lower watch case, the bottom of the lower watch case is symmetrically provided with a catheter groove for fitting and accommodating a catheter and a joint fixed at the end of the catheter; a rubber head is assembled on the end plate of the catheter groove through magnetic adsorption, and the rubber head is in interference fit with the joint; the present application collects and monitors multiple data of human body through a smart wristwatch, reminds a patient or sends alarm information to a medical care terminal, and improves the care level of patients during dialysis interval; the catheter can also be accommodated and fixed in the catheter groove, and the rubber head is in butt joint with the catheter joint to form closed protection, so that dust and bacteria in the external environment are prevented from invading the inside of the catheter; and the present application replaces the simple fixation mode of traditional medical adhesive tape, plaster, bandage and the like, and the fixation of the catheter is more firm and reliable, the catheter can be prevented from falling off and displacement, and the wearing comfort is improved.

Description

Technical Field

[0001] This invention belongs to the field of health and medical technology, specifically relating to a dynamic pressure feedback wristwatch based on the fixation of a hemodialysis catheter. Background Technology

[0002] Hemodialysis is a medical treatment for kidney failure. It uses a machine to filter blood and remove metabolic waste and excess water from the body, replacing the kidneys. Hemodialysis requires the establishment of an extracorporeal circulation pathway through a catheter. The stability of the catheter directly affects the safety and effectiveness of the treatment. In clinical practice, because dialysis is a periodic and long-term treatment, in order to avoid repeated catheter removal and insertion that could lead to vascular damage and infection, and to reduce pain, the dialysis catheter is not removed immediately after a single dialysis session. It remains in place and suspended, attached to the patient's limb (mostly the forearm or upper arm).

[0003] However, existing clinical catheter fixation methods generally have obvious defects: they mostly use simple structures such as medical tape, dressings, and bandages for fixation, which are easily affected by sweat, oil or friction during activity and easily lose their adhesiveness, leading to catheter displacement or dislodgement. In addition, some patients are allergic to the tape material (such as acrylic adhesive), which may cause erythema, itching or even ulceration. After being fixed in a conventional manner, the catheter tip opening is usually exposed to the external environment and lacks a dedicated sealing and protective structure. During the patient's daily activities, such as dressing and washing, environmental pollutants such as dust, sweat, bacteria, and fungi can easily enter the lumen through the catheter tip opening and then enter the body along the vascular pathway, causing serious complications such as catheter-related local infection, bloodstream infection, and bacteremia, increasing patient suffering and treatment risks. After dialysis is completed, patients can only rely on their own feelings or regular check-ups by medical staff. It is difficult to detect potential problems such as abnormal local pressure in the arm, ischemia due to pressure, abnormal heart rate, and abnormal body temperature in the early stages. Once the catheter is dislodged, blocked, or the blood vessel is compressed, it may directly lead to serious adverse events such as treatment interruption, massive bleeding, infection, and limb ischemia. Summary of the Invention

[0004] The purpose of this invention is to provide a dynamic pressure feedback wristwatch based on hemodialysis catheter fixation. This smartwatch collects and monitors multiple data points after hemodialysis, alerting patients to take action or sending alarm messages to the medical monitoring terminal when data is abnormal, thus improving the safety monitoring level of patients between dialysis sessions. It can also store and fix the dialysis catheter in a catheter slot, with the adhesive tip and catheter connector forming a sealed protection, preventing dust and bacteria from the external environment from entering the catheter and avoiding catheter-related infections and complications. Furthermore, it replaces traditional simple fixation methods such as medical tape, dressings, and bandages, providing a more secure and reliable fixation of the catheter, preventing problems such as catheter dislodgement, displacement, and twisting during daily activities, and improving wearing comfort.

[0005] The specific technical solution adopted by this invention is as follows: A dynamic pressure feedback wristwatch based on hemodialysis catheter fixation includes a wristwatch body consisting of an upper case and a lower case fastened together. The bottom of the lower casing is symmetrically provided with conduit grooves for accommodating and storing conduits and connectors fixed to their ends; the end plate of the conduit groove is magnetically attached with a rubber head, which is interference-fitted with the connector to prevent external dirt and impurities from entering the inner cavity of the conduit. The inner wall of the conduit groove is symmetrically provided with limiting plates. The conduit is embedded into the conduit groove through the gap between the two limiting plates to fix the position of the conduit and to form an air flow gap below the limiting plates. Furthermore, the combined diameter of the two limiting plates is smaller than the outer diameter of the joint, which is used to limit the lateral displacement of the joint.

[0006] The upper casing is equipped with a display screen and a warning light. A control and analysis unit is fixed inside the casing. The control and analysis unit is electrically connected to the display screen, and a column is provided at each of its top corners.

[0007] Each of the upper corners inside the lower casing is provided with a second column, and each second column is arranged coaxially with the corresponding column. A partition is provided between column one and column two. The upper and lower sides of the top corner of the partition are provided with fitting plates, which are respectively inserted and matched with the corresponding column one and column two.

[0008] A wire groove is provided through the middle of the partition, and a sensing and acquisition unit is fixedly connected to the bottom of the lower casing. The sensing and acquisition unit is electrically connected to the control and analysis unit through a cable passing through the wire groove.

[0009] The conduit groove is located on both sides of the sensing and acquisition unit. The bottom of the lower casing and the gap between the sensing and acquisition units are symmetrically provided with ventilation grooves to form an air circulation channel. The cross-sections of the conduit groove and the ventilation groove are both streamlined shapes that bulge downward into the interior of the casing.

[0010] The end plate of the conduit groove is fixedly provided with a metal plate. The metal plate is detachably connected to a magnetic plate by magnetic attraction. The rubber head is fixedly connected to one end of the magnetic plate, and its outer wall is provided with a circumferential spiral pattern to enhance the fitting and sealing performance with the connector. The rubber head is embedded into the inner cavity of the connector to form an interference fit.

[0011] The limiting plates are arranged in pairs as a group, and several groups are provided in total. Each group of limiting plates has an arc-shaped structure and is arranged to extend along the axial direction of the guide groove. The inner diameter of the gap between each group of limiting plates is smaller than the maximum outer diameter of the guide. One group of the limiting plates is located on one side of the connector. The installation height of the limiting plate is equal to the distance between the bottom reference surface of the lower housing and the top of the guide groove.

[0012] The sensing and acquisition unit includes a photoelectric sensor, a pressure sensor, a body temperature sensor, a bioimpedance sensor, and an inertial detector, used to collect information on heart rate, blood oxygen, vascular pressure, body surface temperature, body fluid volume, and patient position. The control and analysis unit includes an MCU chip, a memory, a power supply, a communication module, and an alarm module that are electrically connected, and is also electrically connected to the sensing and acquisition unit. It is used to analyze and process the acquired data and output early warning signals.

[0013] When the collected parameters reach the preset first-level warning threshold, the control and analysis unit controls the warning light to flash intermittently; when the parameters reach the second-level warning threshold, the control and analysis unit, while executing the first-level warning action, remotely sends alarm information to the preset medical monitoring terminal through the communication module.

[0014] The technical effects achieved by this invention are as follows: This invention uses a smart watch to collect and monitor multiple data points of the human body after hemodialysis, and reminds the patient to take action or sends alarm information to the medical monitoring terminal when the data is abnormal, so as to avoid the continuous deterioration of the physical condition due to untimely information acquisition and improve the safety monitoring level of patients between dialysis sessions. The smart watch can also store and fix the dialysis catheter in the catheter slot, and the rubber head and catheter connector can be connected and fitted to form a sealed protection to prevent dust and bacteria in the external environment from entering the inside of the catheter, avoiding serious complications such as catheter-related local infection, bloodstream infection, and bacteremia, and reducing patient pain and treatment risks. By using a smartwatch and a limiting plate, the catheter can be secured more firmly and reliably than traditional medical tape, dressings, or bandages. This prevents the catheter from falling out, shifting, or twisting during daily activities and avoids allergic reactions to adhesive tape or dressings in certain patients, thus improving comfort. Attached Figure Description

[0015] Figure 1 This is an overall view of the wristwatch storage tube provided in an embodiment of the present invention; Figure 2 This is an internal structural diagram showing the separation of the upper and lower casings provided in an embodiment of the present invention; Figure 3 This is a bottom view of the structure where the upper and lower casings are separated, as provided in an embodiment of the present invention; Figure 4 yes Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a bottom structural diagram of the lower casing provided in an embodiment of the present invention; Figure 6 yes Figure 5A magnified view of a section at point B in the middle; Figure 7 This is a structural diagram showing the connection between the catheter, connector, and rubber head provided in the embodiments of the present invention; Figure 8 This is a diagram showing the relationship between the sub-components of the control analysis unit and the sensing acquisition unit provided in an embodiment of the present invention.

[0016] The attached diagram lists the components represented by each number as follows: 1. Upper casing; 101. Lower casing; 102. Display screen; 103. Warning light; 104. Control and analysis unit; 105. Column one; 106. Partition; 107. Cable tray; 108. Fitting plate; 109. Conduit groove; 110. Ventilation groove; 111. Sensor acquisition unit; 112. Connector; 113. Limiting plate; 114. Conduit; 115. Rubber head; 116. Magnetic suction plate; 117. Metal plate; 118. Column two. Detailed Implementation

[0017] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0018] like Figures 1-3 As shown, a dynamic pressure feedback wristwatch based on hemodialysis catheter fixation includes a wristwatch body consisting of an upper case 1 and a lower case 101 fastened together. Example 1: See attached document Figures 3-7 The bottom of the lower casing 101 is symmetrically provided with conduit grooves 109 for accommodating and storing conduit 114 and connector 112 fixed to its end; the end plate of conduit groove 109 is magnetically attached with a rubber head 115, which is interference-fitted with connector 112 to prevent external dirt and impurities from entering the inner cavity of conduit 114; the conduit grooves 109 are located on both sides of the sensing and acquisition unit 111, and the bottom of the lower casing 101 and the gap between the sensing and acquisition unit 111 are symmetrically provided with vent grooves 110 to form an air circulation channel. The cross-sections of conduit grooves 109 and vent grooves 110 are both streamlined and protrude downward into the interior of the lower casing 101. A metal plate 117 is fixedly provided on the end plate of the conduit groove 109. The metal plate 117 is detachably connected to a magnetic plate 116 by magnetic attraction. A rubber head 115 is fixedly connected to one end of the magnetic plate 116, and its outer wall is provided with a circumferential spiral pattern to enhance the fitting and sealing with the connector 112. The rubber head 115 is embedded into the inner cavity of the connector 112 and forms an interference fit.

[0019] According to the above structure, when performing the wearing procedure on the patient, the rubber head 115 is first removed from the metal plate 117 and inserted into the corresponding connector 112 with an interference fit. The spiral pattern on the outer wall of the rubber head 115 enhances the friction with the inner wall of the connector 112, thus enhancing the fitting effect. Then, the two branches of the dialysis catheter 114 are pressed into the two catheter slots 109 symmetrically opened at the bottom of the lower case 101 through the gap between the two limiting plates 113. The catheter slots 109 adopt a streamlined structure design that protrudes downward into the interior of the lower case 101. This structure ensures that the catheter 114 does not protrude from the outer surface of the lower case 101 after it is fully inserted, avoiding the catheter 114 from rubbing or pulling against clothing or foreign objects during wearing, while improving the fit and comfort of the watch. Furthermore, after the catheter 114 is inserted into place, the catheter 114 is slightly moved along the catheter groove 109 so that the magnetic plate 116 of the rubber head 115 at the connector 112 of its branch tube is magnetically fixed to the corresponding metal plate 117. The metal plate 117 can be made of, but is not limited to, martensitic stainless steel, iron, nickel-plated low carbon steel, etc., and has good magnetic conductivity and corrosion resistance. Through the tight mating and fitting of the rubber head 115 and the connector 112, a reliable closed structure is formed, thereby preventing dust, bacteria and other pollutants in the external environment from entering the inner lumen of the catheter 114 through the connector 112, reducing the risk of catheter 114-related infections. Furthermore, the magnetic attraction of the magnetic plate 116 to the metal plate 117 and the position fixation of the limiting plate 113 to the catheter 114 work together to firmly fix the catheter 114 inside the catheter groove 109 to prevent it from falling off. The material of the rubber head 115 can be, but is not limited to, medical-grade materials with excellent biocompatibility and sealing performance, such as medical silicone and medical rubber. Furthermore, according to the appendix Figure 7 The two magnetic attraction methods for fixing the magnetic plate 116 and the metal plate 117 are shown. One method has been disclosed in the above steps. The other method is to make the metal plate 117 into a structure with a hemispherical groove, and make the end of the magnetic plate 116 into a spherical structure that matches and fits into the hemispherical groove of the metal plate 117. When the two are attracted, the fixing effect of the connector 112 can be achieved. Furthermore, a ventilation groove 110 is symmetrically provided at the bottom of the lower case 101 and at the gap of the sensing unit 111. The ventilation groove 110 penetrates the bottom plate of the lower case 101 and forms a through air circulation channel between the lower case 101 and the patient's arm skin when the watch is being worn. This accelerates local air circulation, reduces sweat accumulation, improves the breathability of the watch during long-term wear, and prevents skin discomfort caused by prolonged stuffiness.

[0020] Example 2: See attached document Figures 3-6The inner wall of the conduit groove 109 is symmetrically provided with limiting plates 113. The conduit 114 is embedded into the conduit groove 109 through the gap between the two limiting plates 113 to fix the position of the conduit 114 and form an air flow gap below the limiting plates 113. Furthermore, the combined diameter of the two limiting plates 113 is smaller than the outer diameter of the connector 112, which is used to limit the lateral displacement of the connector 112. The limiting plates 113 are arranged in pairs as a group, and several groups are set in total. Each group of limiting plates 113 has an arc-shaped structure and extends along the axial direction of the guide groove 109. The inner diameter of the gap between each group of limiting plates 113 is smaller than the maximum outer diameter of the guide 114. One group of limiting plates 113 is located on one side of the connector 112. The installation height of the limiting plates 113 is equal to the distance between the bottom reference surface of the lower housing 101 and the top of the guide groove 109.

[0021] According to the above structure, since the installation height of the limiting plate 113 is equal to the distance between the bottom reference surface of the lower case 101 and the top of the guide groove 109, after the guide 114 is inserted into the guide groove 109 through the gap between the two limiting plates 113, an air circulation gap similar to the ventilation groove 110 is formed below the limiting plate 113, which can also accelerate local air circulation, reduce sweat accumulation, and improve the breathability of the watch during long-term wear. Furthermore, since the combined diameter of the two limiting plates 113 is smaller than the outer diameter of the connector 112, after the connector 112 is magnetically fixed to the metal plate 117, the end of one set of limiting plates 113 is located on one side of the connector 112 to form a lateral limiting effect on it, which enhances the fixing effect on the connector 112 and prevents the connector 112 from moving axially along the guide groove 109 and detaching from the metal plate 117. The inner diameter of the gap between the limiting plates 113 is smaller than the maximum outer diameter of the guide 114, which can ensure that after the guide 114 is embedded in the guide groove 109, the guide 114 cannot automatically fall off through the gap when no external force is applied.

[0022] Example 3: See attached document Figures 1-3 , Figure 5 , Figure 8 The upper casing 1 is equipped with a display screen 102 and a warning light 103. A control analysis unit 104 is fixed inside the upper casing 101. The control analysis unit 104 is electrically connected to the display screen 102. Each of the upper casing 104 has a first column 105 at its top corner. Each of the lower casing 101 has a second column 118 at its top corner. Each second column 118 is coaxially arranged with the corresponding first column 105. A partition 106 is provided between the first column 105 and the second column 118. The upper and lower sides of the top corner of the partition 106 are provided with fitting plates 108. The fitting plates 108 are respectively inserted and engaged with the corresponding first column 105 and second column 118. A wire groove 107 is opened through the middle of the partition 106. A sensor acquisition unit 111 is fixedly connected to the bottom of the lower casing 101. The sensor acquisition unit 111 is electrically connected to the control analysis unit 104 through a cable passing through the wire groove 107. The sensing and acquisition unit 111 includes a photoelectric sensor, a pressure sensor, a body temperature sensor, a bioimpedance sensor, and an inertial detector, used to collect information on heart rate, blood oxygen, vascular pressure, body surface temperature, body fluid volume, and patient position. The control and analysis unit 104 includes an MCU chip, a memory, a power supply, a communication module, and an alarm module electrically connected to the sensing and acquisition unit 111, used to analyze and process the collected data and output early warning signals. When the collected parameters reach a preset first-level early warning threshold, the control and analysis unit 104 controls the warning light 103 to flash intermittently. When the parameters reach a second-level early warning threshold, the control and analysis unit 104, while executing the first-level early warning action, remotely sends alarm information to a preset medical monitoring terminal through the communication module.

[0023] According to the above structure, the display screen 102 on one side of the upper casing 1 serves as a human-machine interface, used to display in real time various physiological parameters and equipment operating status information collected by the sensing and acquisition unit 111, and also allows users to perform operations such as parameter adjustment and warning settings. The partition 106 between the upper casing 1 and the lower casing 101 has the core function of separating the control and analysis unit 104 inside the upper casing 1 from the sensing and acquisition unit 111 at the bottom of the lower casing 101, and providing support and protection for the control and analysis unit 104. The partition 106 is assembled by inserting and fitting the two columns 118 fixed at the top corner of the lower casing 101 and the first column 105 fixed at the top corner of the control and analysis unit 104 through the fitting plates 108 on the upper and lower sides of its top corner. Furthermore, once the watch is in place, the sensing and acquisition unit 111, fixed at the bottom of the lower case 101, comes into close contact with the patient's arm. Various sensors, including photoelectric sensors, pressure sensors, body temperature sensors, and bioimpedance sensors, are activated simultaneously to collect biological signals such as the patient's heart rate, blood oxygen saturation, body surface temperature, limb pressure, and body fluid volume. The sensing and acquisition unit 111 converts the collected biological signals into electrical signals, which are then transmitted to the MCU chip of the control and analysis unit 104 via cables passing through the wire groove 107 in the middle of the partition 106. Furthermore, after filtering, analyzing, and processing the received signal data, the MCU chip compares it with a preset warning threshold. If the processed data parameters reach the preset first-level warning threshold, the control analysis unit 104 immediately controls the warning light 103 on the upper casing 1 to flash intermittently, issuing a slight warning to the patient and reminding them to pay attention to their physical condition and have timely checkups. If the data parameters reach the preset second-level warning threshold, the control analysis unit 104, while controlling the warning light 103 to flash continuously, sends alarm information to the preset medical monitoring terminal through its internal communication module, and synchronously transmits abnormal parameter data, so that medical staff can promptly obtain information about the patient's abnormal condition and take intervention measures.

[0024] The working principle of this invention is as follows: A wristwatch-style wearable structure integrates the fixation, sealing protection, and monitoring and early warning of human physiological parameters of the hemodialysis catheter 114. When worn, the dialysis catheter 114 is placed into the catheter groove 109 of the lower case 101 of the wristwatch. The rubber head 115 at the end of the catheter groove 109 and the connector 112 form an interlocking fit, preventing the intrusion of dust, bacteria, and other contaminants, reducing the risk of infection. The limiting plate 113 further limits the axial and radial positioning of the catheter 114, and the magnetic attraction plate 116 and metal plate 117 provide reliable fixation, preventing the catheter 114 and connector 112 from falling off or shifting. This replaces traditional methods of fixation such as adhesive tape and straps, avoiding skin allergies.

[0025] After the wristwatch is worn, the sensor acquisition unit 111 comes into contact with the human body surface to collect physiological parameters such as heart rate, blood oxygen, and body temperature in real time, and transmits the signals to the control and analysis unit 104. The control and analysis unit 104 analyzes and processes the data and compares it with preset warning thresholds: when the parameter reaches the first-level warning threshold, a local prompt is made through the warning light 103; when the parameter reaches the second-level warning threshold, while making a local prompt, an alarm message is sent to the medical monitoring terminal through the communication module, so as to realize real-time monitoring of the patient's physical condition and timely warning of abnormalities during dialysis.

[0026] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A dynamic pressure feedback wristwatch based on hemodialysis catheter fixation, characterized in that: The main body of the watch includes the upper case (1) and the lower case (101) that are fastened together. The bottom of the lower casing (101) is symmetrically provided with conduit grooves (109) for fitting and storing conduit (114) and connector (112) fixed to its end; the end plate of the conduit groove (109) is fitted with a rubber head (115) by magnetic adsorption, and the rubber head (115) and connector (112) are press-fitted to prevent external dirt and impurities from entering the inner cavity of the conduit (114); The inner wall of the conduit groove (109) is symmetrically provided with limiting plates (113). The conduit (114) is embedded into the conduit groove (109) through the gap between the two limiting plates (113) to fix the position of the conduit (114) and form an air flow gap below the limiting plates (113). Furthermore, the combined diameter of the two limiting plates (113) is smaller than the outer diameter of the joint (112), which is used to limit the lateral displacement of the joint (112).

2. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 1, characterized in that: The upper casing (1) is equipped with a display screen (102) and a warning light (103). A control analysis unit (104) is fixed inside it. The control analysis unit (104) is electrically connected to the display screen (102), and each of its top corners is equipped with a column (105).

3. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 2, characterized in that: Each of the top corners inside the lower casing (101) is provided with a second column (118), and each second column (118) is coaxially arranged with the corresponding first column (105); A partition (106) is provided between the first column (105) and the second column (118). The upper and lower sides of the top corner of the partition (106) are provided with fitting plates (108), which are respectively inserted and matched with the corresponding first column (105) and second column (118).

4. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 3, characterized in that: A wire groove (107) is provided through the middle of the partition (106), and a sensor acquisition unit (111) is fixedly connected to the bottom of the lower casing (101). The sensor acquisition unit (111) is electrically connected to the control and analysis unit (104) through a cable passing through the wire groove (107).

5. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 4, characterized in that: The conduit groove (109) is located on both sides of the sensing and acquisition unit (111). The bottom of the lower casing (101) and the gap between the sensing and acquisition unit (111) are symmetrically provided with ventilation grooves (110) to form an air circulation channel. The cross-sections of the conduit groove (109) and the ventilation groove (110) are both streamlined shapes that bulge into the interior of the lower casing (101).

6. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 5, characterized in that: The end plate of the conduit groove (109) is fixedly provided with a metal plate (117). The metal plate (117) is detachably connected to a magnetic plate (116) by magnetic attraction. The rubber head (115) is fixedly connected to one end of the magnetic plate (116), and its outer wall is provided with a circumferential spiral pattern to enhance the fitting and sealing with the connector (112). The rubber head (115) is embedded into the inner cavity of the connector (112) and forms an interference fit.

7. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 6, characterized in that: The limiting plates (113) are arranged in pairs as a group, and several groups are provided. Each group of limiting plates (113) has an arc-shaped structure and extends along the axial direction of the guide groove (109). The inner diameter of the gap between each group of limiting plates (113) is smaller than the maximum outer diameter of the guide (114). One group of the limiting plates (113) is located on one side of the connector (112). The installation height of the limiting plate (113) is equal to the distance between the bottom reference surface of the lower casing (101) and the top of the guide groove (109).

8. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 7, characterized in that: The sensing and acquisition unit (111) includes a photoelectric sensor, a pressure sensor, a body temperature sensor, a bioimpedance sensor and an inertial detector, used to acquire heart rate, blood oxygen, vascular pressure, body surface temperature, body fluid volume and patient position information. The control and analysis unit (104) includes an MCU chip, a memory, a power supply, a communication module and an alarm module that are electrically connected, and is electrically connected to the sensing and acquisition unit (111) for analyzing and processing the acquired data and outputting a warning signal.

9. The dynamic pressure feedback wristwatch based on hemodialysis catheter fixation according to claim 8, characterized in that: When the collected parameters reach the preset first-level warning threshold, the control analysis unit (104) controls the warning light (103) to flash intermittently; when the parameters reach the second-level warning threshold, the control analysis unit (104) performs the first-level warning action and remotely sends alarm information to the preset medical monitoring terminal through the communication module.

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