Intelligent child nasal feeding tube end fixing and protecting system with state monitoring function

Abstract

The present application relates to the technical field of gastrointestinal nutritional auxiliary medical equipment, and discloses an intelligent child nasal feeding tube end fixing and protecting system with a state monitoring function, which comprises a fixing and protecting body, the fixing and protecting body comprises a semi-ellipsoidal protecting box and a flat lid, a nasal feeding tube inlet hole is arranged at the top of the protecting box, the protecting box is connected with the lid through a hinge and is locked by a lock catch, a fixing groove which is perpendicular to the nasal feeding tube inlet hole is horizontally arranged in the middle of the protecting box, and an open-type fixing hole is arranged at the edge of the fixing groove; the sealing and fixing of the nasal feeding tube end are realized through the fixing and protecting body, the parameters such as the closed state of the nasal feeding tube, the opening and closing state of the fixing device, the tube pressure and the environmental temperature and humidity are monitored in real time, when an abnormality is monitored, multi-stage early warning is timely sent, the nasal feeding tube of different specifications is adapted, the material is safe and comfortable, the intelligent degree is high, the whole cycle monitoring and early warning of the nasal feeding tube use process can be realized, the risk in pediatric clinical nursing is greatly reduced, and the nursing efficiency and quality are improved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary medical devices and tools related to gastrointestinal nutrition, and in particular to an intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function. Background Technology

[0002] In pediatric clinical nursing, nasogastric tubes are a core medical device for providing nutritional support to children who are unable to feed themselves. To prevent contamination of the nasogastric tube tip and maintain a sealed tube, the tip needs to be folded back and secured with a fixator. Existing technologies include nasogastric tube tip fixators specifically designed for children, which can achieve a sealed fixation of the nasogastric tube tip, are compatible with different sizes of nasogastric tubes, and are made of safe and comfortable materials. However, these fixators only provide basic physical fixation and sealing functions, and have significant limitations in their use.

[0003] In clinical nursing, young children are prone to movement and easily become dislodged, which can easily lead to the loosening of the fixation device and displacement of the folded portion of the nasogastric tube. Medical staff cannot detect these abnormalities in real time, and problems are often only discovered after infection or interruption of nutrition delivery. Issues such as whether the temperature and humidity environment inside the fixation device is suitable and whether the tube is damaged due to excessive pressure cannot be monitored manually in real time, which can easily lead to risks associated with the use of nasogastric tubes, increase the workload of pediatric nursing, and create safety hazards. Based on this, an intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function is proposed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the background art and to propose an intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A smart pediatric nasogastric tube end fixation and protection system with status monitoring function includes a fixator protection body, which includes a semi-ellipsoidal protective box and a flat cover. The top of the protective box has a nasogastric tube inlet. The protective box and the cover are connected by a hinge and locked by a buckle. The middle of the protective box has a horizontal fixing groove perpendicular to the nasogastric tube inlet. The edge of the fixing groove has an open fixing hole. The bottom of the protective box has a pre-opening hole that can be sealed or opened. The top side of the protective box has a rope hole. It also includes a status monitoring module, a data transmission module, an early warning module and a terminal display module.

[0007] The status monitoring module is integrated into the fixation device protection body and is used to collect data on the nasogastric tube closure status, fixation device opening and closing status, tube pressure, and ambient temperature and humidity.

[0008] The data transmission module is electrically connected to the status monitoring module and is used to transmit the collected monitoring data to the terminal display module;

[0009] The early warning module is electrically connected to the status monitoring module and the terminal display module respectively, and is used to issue an early warning signal when the monitoring data exceeds a preset threshold.

[0010] The terminal display module is used to receive, store and display monitoring data, and at the same time receive the warning signals from the warning module and display them visually.

[0011] In the above-mentioned intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function, the status monitoring module includes an opening and closing detection sensor, a pressure sensor, a sealing detection sensor, and a temperature and humidity sensor.

[0012] The opening and closing detection sensor is embedded in the hinge and the latch, and is used to detect the opening and closing status of the cover and the protective box and the locking status of the latch.

[0013] The pressure sensor is embedded in the inner wall of the fixing groove and is used to detect the tube pressure of the folded part of the nasogastric tube to determine whether the tube is loose or under abnormal pressure.

[0014] The sealing detection sensor is embedded in the mating surface of the protective box and the cover, as well as the inner wall of the nasogastric tube inlet and the preparatory hole, and is used to detect the internal sealing status of the retainer protective body.

[0015] The temperature and humidity sensor is embedded in the inner wall of the protective box and is used to collect environmental temperature and humidity data inside the protective box to determine whether there is a temperature and humidity environment that is prone to bacterial growth.

[0016] In the aforementioned intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function, the inner side of the protective box of the fixation device protection body is provided with an installation cavity. The sensors of the status monitoring module and the core components of the data transmission module are all embedded in the installation cavity. The outer side of the installation cavity is provided with a food-grade sealed waterproof membrane. A battery compartment is provided between the installation cavity and the outer wall of the protective box. The battery compartment is equipped with a rechargeable button battery to power the status monitoring module, data transmission module and early warning module.

[0017] In the aforementioned intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function, the data transmission module is a wireless transmission module, including one or more of Bluetooth, WiFi and LoRa units, supporting point-to-point and point-to-multipoint data transmission with terminal equipment in pediatric nursing stations.

[0018] In the aforementioned intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function, the early warning module includes a local audible and visual early warning unit and a remote signal early warning unit;

[0019] The local sound and light warning unit is embedded in the outer wall of the protective box, including a miniature buzzer and an LED warning light. The LED warning light has three display states: green solid, yellow flashing, and red flashing, which correspond to normal, minor abnormality, and serious abnormality, respectively.

[0020] The remote signal early warning unit transmits the early warning signal to the terminal display module through the data transmission module, and also supports sending SMS / APP push early warnings to the mobile terminals of nursing staff.

[0021] In the aforementioned intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function, the terminal display module includes a local nursing terminal and a cloud server. The local nursing terminal is a computer, tablet, or handheld terminal in the pediatric nursing station, used to display monitoring data and early warning information in real time, and supports local storage and historical query of data. The cloud server is connected to the local nursing terminal via a network for cloud backup of monitoring data, and supports simultaneous viewing on multiple terminals and statistical analysis of data.

[0022] In the aforementioned intelligent pediatric nasogastric tube end fixing and protection system with status monitoring function, the entire fixing and protection body is made of food-grade soft plastic. The diameters of the nasogastric tube inlet and the preparatory hole are equal, and the diameter of the fixing hole is 1.5 times the diameter of the nasogastric tube inlet. The fixing hole forms a sealing hole after the cover is closed and locked. Both the nasogastric tube inlet and the preparatory hole are equipped with elastic silicone sealing rings to adapt to pediatric nasogastric tubes of different diameters.

[0023] In the aforementioned intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function, the system further includes a calibration module. The calibration module is electrically connected to the status monitoring module and integrated into the terminal display module. It is used to perform zero-point calibration, threshold setting, and parameter correction on the data collected by each sensor, and supports custom monitoring thresholds based on the child's age and nasogastric tube specifications.

[0024] Compared with existing technologies, the advantages of this invention are:

[0025] 1. While retaining the advantages of traditional nasogastric tube end fixation devices, such as simple structure, convenient operation, strong adaptability, and safe materials, this invention integrates a multi-dimensional status monitoring module to upgrade from "simple physical fixation" to "fixation + real-time sensing". This allows for the timely detection of problems such as loosening, sealing failure, and abnormal pressure, thereby reducing the risk of infection and abnormal nutrient delivery from the source.

[0026] 2. This invention uses four types of sensors—opening and closing detection sensor, pressure sensor, sealing detection sensor, and temperature and humidity sensor—to achieve comprehensive monitoring of the nasogastric tube's end fixation status, tube body status, sealing status, and surrounding environment. This covers the entire lifecycle of nasogastric tube use, providing accurate and comprehensive monitoring data to support scientific data for pediatric nursing.

[0027] 3. This invention sets up a dual early warning mechanism with a local sound and light early warning unit and a remote signal early warning unit. The local unit can provide real-time reminders at close range, while the remote unit can push accurate early warning information to nursing staff. This solves the pain point of "inability to detect abnormalities in real time" in traditional nursing, improves the response speed to abnormal situations, and reduces the occurrence of nursing accidents.

[0028] 4. The data transmission module of this invention supports wireless data transmission, and the terminal display module realizes multi-terminal data synchronization, historical data query and statistical analysis. Medical staff do not need to conduct frequent manual inspections. They can monitor the nasogastric tube usage status of multiple children in real time through the terminal, which greatly reduces the nursing workload and improves the efficiency and intelligence level of pediatric nasogastric feeding care. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure during the fastening process proposed in this invention;

[0030] Figure 2 This is a schematic diagram of the overall structure when the present invention is turned on;

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure when the device is opened, as proposed in this invention.

[0032] In the diagram: 1. Fixed protective body; 101. Protective box; 102. Nasogastric tube inlet; 103. Hinge; 104. Lock; 105. Rope hole; 106. Nasogastric tube for children; 107. Fixing groove; 108. Fixing hole; 109. Preparatory hole; 110. Cover. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figures 1-3 A smart pediatric nasogastric tube end fixation and protection system with status monitoring function includes a fixation protection body 1, a status monitoring module, a data transmission module, an early warning module and a terminal display module. A calibration module is also added as an auxiliary module. All modules work together to realize the physical fixation and sealing of the nasogastric tube end and the intelligent monitoring and early warning of its usage status.

[0035] The retainer protection body 1 forms the physical basis of the system. It is an optimized design based on the existing structure of pediatric nasogastric tube end retainers, including a semi-ellipsoidal protective box 101 and a flat cover 110. The top of the protective box 101 has a nasogastric tube inlet 102. The protective box 101 and the cover 110 are connected by a hinge 103 and locked by a latch 104. A fixing groove 107, perpendicular to the nasogastric tube inlet 102, is horizontally arranged in the middle of the protective box 101. An open fixing hole 108 is provided along the edge of the fixing groove 107. After the cover 110 is closed and locked, the fixing hole 108 forms a sealing hole, ensuring a secure fixation of the folded portion of the nasogastric tube. A pre-drilled hole 109 is provided at the bottom of the protective box 101. The device can be sealed or opened with a plug for inserting the end of the nasogastric tube or cleaning the inside of the protective box 101. The top side of the protective box 101 has a rope hole 105 for threading a fixing rope to suspend and fix the protective box 101, preventing it from shaking. The inner side of the protective box 101 has an independent mounting cavity and a battery compartment for embedding electronic components and a button battery for power supply, respectively. The outer side of the mounting cavity is covered with a food-grade waterproof sealing membrane to ensure the sealing performance of the inside of the protective box 101. The nasogastric tube inlet 102 and the preparatory hole 109 are both equipped with elastic silicone sealing rings to improve sealing and fit. The entire body of the fixator is made of food-grade soft plastic, which is soft and comfortable and will not cause discomfort to the child.

[0036] The status monitoring module is the core sensing unit of the system, integrated into the mounting cavity of the retainer protection body 1. It includes an opening / closing detection sensor, a pressure sensor, a sealing detection sensor, and a temperature and humidity sensor. Each sensor is miniaturized to fit the size requirements of child-friendly devices and adheres to a food-grade waterproof sealing membrane, without affecting the internal sealing and use of the protective box 101. The opening / closing detection sensor is embedded in the hinge 103 and the latch 104, detecting the opening / closing status of the cover 110 and the protective box 101, and the locking status of the latch 104 in real time, to determine whether the retainer has been accidentally opened. The pressure sensor is embedded in... The pressure of the nasogastric tube at the folded part is detected in real time on the inner wall of the fixing groove 107. The pressure change is used to determine whether the tube is loose, displaced, or over-pressurized. The sealing detection sensor is embedded in the mating surface of the protective box 101 and the cover 110, as well as the inner wall of the nasogastric tube inlet 102 and the preparatory hole 109. The contact pressure and gap status of the sealing surface are detected to determine whether the internal seal of the fixing device protective body 1 has failed. The temperature and humidity sensor is embedded in the inner wall of the protective box 101 to collect the temperature and humidity data inside the protective box 101 in real time. The sensor can determine whether there is a temperature and humidity environment that is prone to bacterial growth and provide early warning of infection risk.

[0037] The data transmission module is electrically connected to the status monitoring module. The core component is embedded in the mounting cavity of the fixation protection body 1. It is a wireless transmission module, including one or more of Bluetooth, WiFi and LoRa units, which can be adapted to different usage scenarios in pediatric wards. It supports point-to-point and point-to-multipoint data transmission with terminal equipment in pediatric nursing stations. Its core function is to transmit various real-time data collected by the status monitoring module to the terminal display module without delay, and at the same time receive the command signals from the terminal display module to realize the parameter control of the sensor.

[0038] The early warning module is electrically connected to the status monitoring module and the terminal display module, and includes a local audible and visual early warning unit and a remote signal early warning unit. It realizes local instant reminders and remote precise push notifications for abnormal states. The local audible and visual early warning unit is embedded in the outer wall of the protective box 101 and includes a miniature buzzer and an LED warning light. The LED warning light has three display states: solid green indicates that all monitored parameters are normal, yellow flashing indicates minor abnormalities such as temperature and humidity approaching the threshold, and red flashing indicates serious abnormalities such as loose fixation or seal failure. The miniature buzzer emits buzzing sounds of different frequencies simultaneously when yellow / red flashing, making it easy for medical staff and children's families to detect abnormalities at close range in a timely manner. The remote signal early warning unit transmits the early warning signal to the terminal display module through the data transmission module. It also supports sending SMS / APP push notifications to nursing staff's mobile terminals (phones, wristbands), marking information such as the type of abnormality and the child's bed, to achieve long-distance, blind-spot-free early warning.

[0039] The terminal display module is the system's data analysis, storage, and display unit, including a local nursing terminal and a cloud server. The local nursing terminal is a computer, tablet, or handheld terminal in the pediatric nursing station, which receives monitoring data from the data transmission module in real time and displays parameters such as the fixator's opening and closing status, tube pressure, sealing status, temperature, and humidity in a visual interface. It also receives warning signals from the warning module and provides visual reminders such as pop-ups and red highlights. It supports local storage and historical query of data, and can retrieve monitoring data by the child's bed and time dimension. The cloud server is connected to the local nursing terminal via the network for cloud backup of monitoring data to prevent data loss. It also supports simultaneous viewing on multiple terminals, allowing medical staff to access the child's nasogastric tube usage data anytime, anywhere through authorized devices. It also has data statistical analysis functions, which can statistically analyze the number and type of abnormal warnings, providing data support for optimizing pediatric nasogastric feeding care programs.

[0040] The calibration module is electrically connected to the status monitoring module and integrated into the terminal display module. It serves as an auxiliary control unit for the system. Medical staff can use the terminal display module's operation interface to perform zero-point calibration, threshold setting, and parameter correction on the data collected by each sensor in the status monitoring module through the calibration module. It supports customizing the warning thresholds for each monitoring indicator based on the child's age, weight, and the specifications of the nasogastric tube, thereby improving the system's adaptability and monitoring accuracy.

[0041] The battery compartment of the fixation protection body 1 is equipped with a rechargeable button battery to power the status monitoring module, data transmission module and early warning module. The battery adopts a food-grade insulation and sealing design, which is safe and leak-free. The battery supports USB fast charging and can be used continuously for 72-96 hours after a single charge, which meets the continuous use needs of pediatric clinical practice. The battery is also replaceable, which facilitates long-term maintenance of the equipment.

[0042] Example 1:

[0043] A smart pediatric nasogastric tube end fixation and protection system with status monitoring function includes a fixator protection body 1, a status monitoring module, a Bluetooth data transmission module, an early warning module, a tablet-type local care terminal and a calibration module. The nasogastric tube inlet 102 and the preparatory hole 109 of the fixator protection body 1 are both 3mm in diameter, and the fixing hole 108 is 4.5mm in diameter, which is compatible with common pediatric nasogastric tube specifications.

[0044] The status monitoring module includes a Hall opening and closing detection sensor embedded in the latch 104, a miniature piezoresistive pressure sensor embedded in the inner wall of the fixing groove 107, a contact sealing detection sensor embedded in the mating surface of the protective box 101 and the cover 110, and a temperature and humidity sensor embedded in the inner side wall of the protective box 101. Each sensor is powered by a 3.7V rechargeable button battery in the battery compartment, with a single charge providing 72 hours of battery life.

[0045] The data transmission module is a Bluetooth unit with a transmission distance of 10m. It transmits real-time data collected by the sensor to the tablet-type local nursing terminal in the pediatric nursing station. The terminal interface displays in real time the fixation device locking status, the preset normal threshold for tube pressure (0.5-2kPa), the sealing status, and the preset normal thresholds for internal temperature and humidity (temperature 18-28℃, humidity 40-60%).

[0046] The local audible and visual warning unit of the early warning module includes a 0805-type LED warning light and a miniature buzzer embedded in the outer wall of the protective box 101. The remote signal warning unit pushes warning information to the nursing staff's mobile APP. When the tube pressure is lower than 0.5 kPa and the tube becomes loose, or when the temperature and humidity exceed the normal threshold, the LED warning light flashes yellow, the miniature buzzer sounds at a frequency of 1 Hz, and the mobile APP pushes a warning for minor abnormalities. When the Hall effect sensor detects that the fixation device is open and the sealing sensor detects that the seal has failed, the LED warning light flashes red, the miniature buzzer sounds at a frequency of 2 Hz, and the mobile APP pushes a warning for serious abnormalities, along with the patient's bed number.

[0047] The calibration module is integrated into the tablet-type local care terminal, allowing medical staff to adjust the warning thresholds of each sensor through the terminal interface to adapt to the needs of different children. The tablet-type local care terminal supports local data storage and can retrieve monitoring data of a single child by date.

[0048] Example 2:

[0049] A smart pediatric nasogastric tube end-fixation protection system with status monitoring function differs from Embodiment 1 in that its data transmission module is a LoRa unit with a transmission distance of 50m, suitable for use in large pediatric wards; the terminal display module includes a computer-type local nursing terminal and a cloud server, which can realize the synchronous storage and statistical analysis of nursing data from multiple hospital areas, providing data support for the standardization of regional pediatric nursing; the button battery in the battery compartment has a single charge life of 96 hours and supports wireless charging, making maintenance more convenient;

[0050] Equipment usage steps:

[0051] Preoperative preparation: Medical staff use the calibration module of the terminal display module to set the warning thresholds of each sensor of the status monitoring module according to the child's age and nasogastric tube specifications, and charge the button battery in the battery compartment of the fixation device protection body 1 to ensure that the device has sufficient power.

[0052] Nasogastric tube fixation: Insert the end of the child's nasogastric tube through the nasogastric tube inlet 102 at the top of the protective box 101, fold the end of the nasogastric tube back according to pediatric nursing standards, place the folded part in the fixing hole 108 of the fixing groove 107, close the cover 110 and fasten the lock 104, thread the fixing rope through the rope hole 105, and hang and fix the protective box 101 on the child's clothing to prevent shaking;

[0053] Monitoring enabled: After the device is powered on, all sensors in the status monitoring module automatically start and transmit real-time monitoring data to the terminal display module through the data transmission module. The terminal interface displays a solid green light, indicating that the device is working normally.

[0054] Routine monitoring and early warning: Medical staff can view the nasogastric tube usage status of multiple children in real time through the terminal display module. When the early warning module issues an early warning signal, they will promptly go to the child's bedside to investigate the problem, such as relocking the fixator, adjusting the position of the nasogastric tube, cleaning the inside of the protective box, etc. After the problem is resolved, the early warning signal will be automatically deactivated and the equipment will return to normal monitoring status.

[0055] Postoperative data traceability: After the nasogastric tube is used, medical staff can retrieve the child's full monitoring data and early warning records through the local nursing terminal of the terminal display module or the cloud server, and include them in the child's nursing record to provide a reference for subsequent care;

[0056] Precautions:

[0057] The fixture protection body 1 is a child-specific device and must be disinfected before use. Avoid immersing the mounting cavity where electronic components are embedded in disinfectant. You can use alcohol wipes to wipe the outer wall for disinfection.

[0058] The battery compartment is a sealed design. If there is leakage of button batteries or equipment malfunction, do not disassemble it yourself. It must be maintained by a professional.

[0059] Each sensor in the status monitoring module is a precision component. During use, avoid strong pressure or collisions with the protective box 101 to prevent sensor damage from affecting monitoring accuracy.

[0060] The monitoring data stored on the cloud server of the terminal display module is the privacy of the child and requires access control. Only medical staff are authorized to view and retrieve it.

[0061] The scope of protection of this invention is not limited to the specific embodiments described above. Any technical solution obtained by simple modification or equivalent substitution based on the technical solution of this invention falls within the scope of protection of this invention.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart pediatric nasogastric tube end fixation and protection system with status monitoring function, comprising a fixator protection body (1), characterized in that, The retainer protective body (1) includes a semi-ellipsoidal protective box (101) and a flat cover (110). The top of the protective box (101) is provided with a nasogastric tube inlet (102). The protective box (101) and the cover (110) are connected by a hinge (103) and locked by a buckle (104). The middle of the protective box (101) is provided with a horizontal fixing groove (107) perpendicular to the nasogastric tube inlet (102). The edge of the fixing groove (107) is provided with an open fixing hole (108). The bottom of the protective box (101) is provided with a preparatory hole (109) that can be sealed or opened. The top side of the protective box (101) is provided with a rope hole (105). It also includes a status monitoring module, a data transmission module, an early warning module and a terminal display module. The status monitoring module is integrated into the fixation device protection body (1) and is used to collect data on the nasogastric tube closure status, fixation device opening and closing status, tube pressure and ambient temperature and humidity. The data transmission module is electrically connected to the status monitoring module and is used to transmit the collected monitoring data to the terminal display module; The early warning module is electrically connected to the status monitoring module and the terminal display module respectively, and is used to issue an early warning signal when the monitoring data exceeds a preset threshold. The terminal display module is used to receive, store and display monitoring data, and at the same time receive the warning signal from the warning module (4) and perform a visual display.

2. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 1, characterized in that, The status monitoring module includes an opening / closing detection sensor, a pressure sensor, a sealing detection sensor, and a temperature and humidity sensor. The opening and closing detection sensor is embedded in the hinge (103) and the latch (104) to detect the opening and closing state of the cover (110) and the protective box (101) and the locking state of the latch (104); The pressure sensor is embedded in the inner wall of the fixing groove (107) to detect the tube pressure of the folded part of the nasogastric tube and determine whether the tube is loose or under abnormal pressure. The sealing detection sensor is embedded in the mating surface of the protective box (101) and the cover (110) and the inner wall of the nasogastric tube inlet (102) and the preparatory hole (109) to detect the internal sealing status of the fixation device protective body (1). The temperature and humidity sensor is embedded in the inner wall of the protective box (101) and is used to collect environmental temperature and humidity data inside the protective box (101) to determine whether there is a temperature and humidity environment that is prone to bacterial growth.

3. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 1, characterized in that, The protective box (101) of the fixture protective body (1) is provided with an installation cavity inside. The sensors of the status monitoring module and the core components of the data transmission module are all embedded in the installation cavity. The outside of the installation cavity is provided with a food-grade sealed waterproof membrane. A battery compartment is provided between the installation cavity and the outer wall of the protective box (101). A rechargeable button battery is provided in the battery compartment to power the status monitoring module, the data transmission module and the early warning module.

4. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 1, characterized in that, The data transmission module is a wireless transmission module, including one or more of Bluetooth, WiFi and LoRa units, which supports point-to-point and point-to-multipoint data transmission with the terminal equipment of the pediatric nursing station.

5. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 1, characterized in that, The early warning module includes a local audible and visual early warning unit and a remote signal early warning unit; The local sound and light warning unit is embedded in the outer wall of the protective box (101), including a miniature buzzer and an LED warning light. The LED warning light has three display states: green constant, yellow flashing, and red flashing, which correspond to normal, slight abnormality, and serious abnormality, respectively. The remote signal early warning unit transmits the early warning signal to the terminal display module through the data transmission module, and also supports sending SMS / APP push early warnings to the mobile terminals of nursing staff.

6. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 1, characterized in that, The terminal display module includes a local nursing terminal and a cloud server. The local nursing terminal is a computer, tablet or handheld terminal in the pediatric nursing station, used to display monitoring data and early warning information in real time, and supports local storage and historical query of data. The cloud server is connected to the local nursing terminal network for cloud backup of monitoring data, and supports simultaneous viewing and statistical analysis of data across multiple terminals.

7. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 6, characterized in that, The entire body of the fixation device (1) is made of food-grade soft plastic. The diameters of the nasogastric tube inlet (102) and the preparatory hole (109) are equal. The diameter of the fixing hole (108) is 1.5 times the diameter of the nasogastric tube inlet (102). The fixing hole (108) forms a sealing hole after the cover (110) is closed and locked. Both the nasogastric tube inlet (102) and the preparatory hole (109) are equipped with elastic silicone sealing rings to adapt to nasogastric tubes of different diameters for children.

8. The intelligent pediatric nasogastric tube end fixation and protection system with status monitoring function according to claim 1, characterized in that, The system also includes a calibration module, which is electrically connected to the status monitoring module and integrated into the terminal display module. The calibration module is used to perform zero-point calibration, threshold setting, and parameter correction on the data collected by each sensor, and supports custom monitoring thresholds based on the child's age and nasogastric tube specifications.

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