Alarm, interception and metering device for drainage completion of peritoneal dialysis

Abstract

The invention relates to the technical field of medical equipment, and discloses a peritoneal dialysis drainage completion alarm interception metering device which comprises a player, one end of the player is fixedly connected with a communication connecting line, and one end of the communication connecting line is connected with a temperature sensing device. The temperature sensing device comprises a temperature sensor module, a controller module, an alarm module and a drainage control module, and is configured to monitor the temperature of peritoneal dialysis liquid, give an alarm and cut off drainage when the drainage is finished and the temperature is reduced to a preset threshold value; the other end of the temperature sensing device is connected with a display device, and a connecting line is fixedly connected to the interior of the temperature sensing device and is configured to display drainage time and drainage amount. According to the peritoneal dialysis device, the liquid flow rate is monitored through the device for measuring the liquid flow rate through the pump, double confirmation is conducted in combination with temperature data, judgment of drainage ending is more accurate, the risk of excessive drainage of peritoneal dialysis liquid is effectively reduced through the multiple monitoring mechanism, complications possibly caused are avoided, and the sense of safety of a patient is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a peritoneal dialysis drainage completion alarm interception metering device. Background Art

[0002] During peritoneal dialysis, the importance of drainage cannot be ignored. Drainage determines the discharge of dialysate and the therapeutic effect, which directly affects the patient's recovery and quality of life. The purpose of drainage is to discharge the peritoneal fluid (dialysate and waste) that has completed dialysis from the body to ensure that the dialysate in the peritoneal cavity does not accumulate too much, while removing waste and excess fluid from the body to maintain normal water and electrolyte balance in the body. Peritoneal dialysis is a method of treating renal failure. Dialysate is injected into the patient's peritoneal cavity, and the filtration effect of the peritoneum is used to remove waste and excess fluid from the body. During peritoneal dialysis, drainage is a very critical link, which determines the discharge of dialysate and the therapeutic effect.

[0003] A traditional peritoneal dialysis drainage completion alarm interception metering device uses artificial drainage. During the drainage process, it is necessary to constantly check whether there is fluid drainage to determine whether the dialysate should be injected into the peritoneal cavity after the drainage stops. This adds a lot of inconvenient links, which leads to problems that affect the patient's recovery. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a peritoneal dialysis drainage completion alarm interception and metering device, which solves the problem that traditional devices use artificial drainage, and during the drainage process, it is necessary to constantly check whether there is liquid drainage to determine whether to start injecting dialysate into the peritoneal cavity after the drainage stops, thereby affecting the patient's recovery.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a peritoneal dialysis drainage completion alarm interception metering device, including a player, one end of the player is fixedly connected to a communication connection line, one end of the communication connection line is connected to a temperature sensing device, the temperature sensing device includes a temperature sensor module, a controller module, an alarm module and a drainage control module, configured to monitor the temperature of the peritoneal dialysis fluid, and issue an alarm and cut off the drainage when the drainage completion temperature drops to a preset threshold; the other end of the temperature sensing device is connected to a display device, the interior of the temperature sensing device is fixedly connected to a connection line, configured to display the drainage time and drainage volume; an air pump liquid flow rate measuring device is added, configured to monitor the liquid flow rate in real time through the flow rate sensor module, and calculate and display the drainage volume based on the measurement result, the whole device is easy to install and carry, and is suitable for use by medical staff or patients at home; An upper fixing plate is arranged on one side of the outer wall of the air pump device for measuring liquid flow rate, a lower fixing plate is fixedly connected to one side of the outer wall of the air pump device for measuring liquid flow rate, a first buckle is arranged on one side of the outer wall of the upper fixing plate, and a second buckle is arranged on the other side of the upper fixing plate.

[0006] Preferably, the temperature sensing device comprises: Temperature sensor module: used to monitor the temperature of peritoneal dialysis fluid in real time and trigger a signal when the temperature drops to the threshold; Controller module: configured to receive temperature sensor data and transmit control signals to coordinate the system; Alarm module: emits sound or light signals to remind the user that drainage has ended; Drainage control module: automatically stops drainage in response to alarm signals, and can control the valve status through manual switches.

[0007] Preferably, the controller module includes a microcontroller unit, a data processing unit and a data judgment unit. Microcontroller unit: coordinates the modules and manages data flow, supporting specific microcontroller chips to meet computing needs; Data processing unit: receives temperature data for real-time processing; Data judgment unit: generates a control signal based on a preset temperature threshold and transmits it to the drainage control module to trigger an alarm or stop the operation.

[0008] Preferably, the drainage control module includes a solenoid valve control unit and a manual valve control unit. The manual valve is used to manually control the drainage in an emergency situation. The solenoid valve can automatically respond to the microcontroller signal and support automatic flow cut-off in the event of an abnormal alarm.

[0009] Preferably, the air pump liquid flow rate measuring device includes a flow rate sensor module, a flow rate calculation module and a display and recording module. The flow rate sensor module uses a turbine flow meter unit and a thermal flow meter unit to calculate the flow rate by detecting the flow rate change; the flow rate calculation module further provides a pulse signal and an output frequency to ensure measurement accuracy.

[0010] Preferably, the flow rate sensor module includes a turbine flow meter unit and a thermal flow meter unit, the turbine flow meter unit is configured to calculate the flow rate by the rotation frequency of the liquid when it flows through the turbine, and the thermal flow meter unit is configured to measure the flow rate by temperature change. This module supports accurate measurement of liquid flow rate and is suitable for flow control of peritoneal dialysis fluid.

[0011] Preferably, the alarm module includes a sound alarm unit, a light signal unit and a display screen warning unit. The sound alarm unit is used to issue an audio prompt, the light signal unit is used to issue a visual warning, and the display screen is used to display warning information to remind medical staff or family members to pay attention to the drainage status in time.

[0012] Preferably, the temperature sensor module includes a thermistor PTC unit and a thermistor NTC unit. The resistance of the PTC unit increases when the temperature rises, and the resistance of the NTC unit decreases when the temperature decreases. Accurate temperature detection is achieved by combining the two.

[0013] Preferably, the data judgment unit includes a data reading unit and a preset temperature threshold unit, the data reading unit is connected to the preset temperature threshold unit, and the data judgment unit is used to judge the temperature data and generate a control signal in combination with the preset threshold.

[0014] Preferably, the display device is configured to display the drainage time, drainage volume and current system status information, and can switch to display different information so that medical staff can fully understand the drainage process.

[0015] Working principle: The peritoneal dialysis drainage completion alarm interception metering device realizes high-precision drainage control and status monitoring of peritoneal dialysis fluid through the collaborative work of multiple modules. First, the temperature sensor module is composed of PTC and NTC thermistors, which monitor the peritoneal dialysis fluid temperature in real time. When the temperature drops to the preset threshold, the sensor sends a signal to the controller module. The controller module includes a microcontroller unit, a data processing unit and a data judgment unit, which are responsible for receiving temperature data and judging whether to trigger the drainage completion signal. If it is judged that the drainage is completed, the controller transmits the control signal to the drainage control module, which includes a solenoid valve and a manual valve, which can automatically stop the drainage or manually control the drainage in an emergency. At the same time, the air pump liquid flow rate measuring device monitors the liquid flow rate in real time through a turbine flowmeter and a thermal flowmeter, and calculates the drainage volume. These data will be displayed on the connected display device, which is convenient for medical staff or home patients to understand the drainage status at any time. The alarm module includes three prompt modes: sound, light signal and display screen. When the drainage is detected to be over or the flow rate is abnormal, the system will issue an alarm to remind the user to deal with it in time. The display device can switch different information to provide real-time drainage time, drainage volume and system status.

[0016] The present invention provides a peritoneal dialysis drainage completion alarm interception metering device, which has the following beneficial effects: 1. The present invention not only monitors the flow rate through the pump liquid flow rate measuring device, but also performs double confirmation in combination with temperature data, so that the determination of the end of drainage is more accurate. This multiple monitoring mechanism effectively reduces the risk of excessive drainage of peritoneal dialysis fluid, avoids possible complications, and enhances the patient's sense of security.

[0017] 2. The device of the present invention is equipped with multiple alarm modes such as sound, light signal and display screen, which can ensure that users can know the drainage status in time under different environments. It is especially suitable for patients at home, which enhances their perception of the drainage process and enables them to be more confident in their daily life.

[0018] 3. The present invention adopts a combination of a turbine flowmeter and a thermal flowmeter to achieve high-precision measurement and real-time calculation of the drainage volume. The user can understand the drainage status at any time through the display device to ensure the transparency and controllability of the treatment.

[0019] 4. The drainage control module of the present invention has a built-in manual valve control unit, which enables the user to quickly interrupt the drainage in an emergency. This design not only increases the flexibility of operation, but also provides additional safety protection in the event of system failure, ensuring that the patient can control his or her own condition in any situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the present invention; Figure 2 It is the main framework diagram of the present invention.

[0021] Among them, 1. display device; 2. temperature sensing device; 3. player; 4. connecting line; 5. communication connecting line; 6. air pump liquid flow rate measuring device; 7. lower fixing plate; 8. upper fixing plate; 9. first buckle; 10. second buckle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please refer to the attached Figure 1 -Attached Figure 2 The embodiment of the present invention provides a peritoneal dialysis drainage completion alarm interception metering device, including a player 3, one end of the player 3 is fixedly connected to a communication connection line 5, one end of the communication connection line 5 is connected to a temperature sensing device 2, the temperature sensing device 2 includes a temperature sensor module, a controller module, an alarm module and a drainage control module, configured to monitor the temperature of the peritoneal dialysis fluid, and issue an alarm and cut off the drainage when the drainage completion temperature drops to a preset threshold; the other end of the temperature sensing device 2 is connected to a display device 1, the interior of the temperature sensing device 2 is fixedly connected to a connection line 4, configured to display the drainage time and drainage volume; an air pump liquid flow rate measuring device 6 is added, configured to monitor the liquid flow rate in real time through the flow rate sensor module, and calculate and display the drainage volume based on the measurement result, the whole device is easy to install and carry, and is suitable for use by medical staff or patients at home; An upper fixed plate 8 is arranged on one side of the outer wall of the air pump device for measuring liquid flow rate 6, a lower fixed plate 7 is fixedly connected to one side of the outer wall of the air pump device for measuring liquid flow rate 6, a first clip 9 is arranged on one side of the outer wall of the upper fixed plate 8, and a second clip 10 is arranged on the other side of the upper fixed plate 8.

[0024] In one embodiment, automatic monitoring and control: the device monitors the temperature of the peritoneal dialysis fluid in real time through the temperature sensing device 2. When the temperature reaches the preset threshold value after the drainage is completed, the device will automatically issue an alarm and stop the drainage. This automatic function effectively reduces the errors of manual operation and ensures the accuracy of the drainage process.

[0025] Double safety monitoring: The air pump liquid flow rate measuring device 6 in the device can monitor the liquid flow rate in real time. Through the dual monitoring of flow rate data and temperature data, the judgment of the end of drainage is more accurate, reducing the risk of excessive drainage of peritoneal dialysis fluid.

[0026] Multi-mode alarm prompts: The device includes multiple alarm modes such as sound alarm, light signal and display warning unit. Through multiple visual and auditory reminders, users can promptly know the status of drainage completion. This design is particularly suitable for patients at home, improving the safety and convenience of home operation.

[0027] Portable design: The entire device is compact and easy for medical staff or patients to carry around, especially suitable for home peritoneal dialysis applications. At the same time, the device is easy to install and easy for patients to operate independently.

[0028] High-precision drainage volume calculation: The turbine flowmeter and thermal flowmeter in the air pump liquid flow rate measuring device are used to accurately measure and calculate the drainage volume, and display it in real time on the display device 1, so that the user can understand the specific situation of the drainage at any time and improve the accuracy of the operation.

[0029] Furthermore, during the peritoneal dialysis drainage process, the temperature sensor module in the temperature sensing device 2 is responsible for real-time monitoring of the temperature of the peritoneal dialysis fluid. The temperature sensor module is composed of a PTC positive temperature coefficient and an NTC negative temperature coefficient thermistor unit, and the combination of the two can accurately detect temperature changes.

[0030] When the temperature of the peritoneal dialysis fluid detected by temperature monitoring drops to a preset threshold, which is usually a value close to room temperature, the temperature sensor module transmits this data to the controller module.

[0031] The data processing unit in the controller module will analyze the temperature data in real time. The data judgment unit will determine whether the drainage is completed based on the set threshold.

[0032] When the data judgment unit determines that the temperature reaches the drainage stopping condition, the controller module sends a control signal to the alarm module and the drainage control module. The alarm module sends a sound and light signal to notify the user that the drainage is about to be completed, and at the same time displays a warning message on the display device 1.

[0033] After receiving the control signal, the drainage control module closes the drainage through the solenoid valve control unit to prevent the continued outflow of peritoneal dialysis fluid. In addition, in an emergency, the user can also manually close the drainage through the manual valve control unit to further ensure safety.

[0034] The air pump liquid flow rate measuring device 6 is used to monitor the flow rate of the peritoneal dialysis fluid in real time, and its core includes a flow rate sensor module and a flow rate calculation module.

[0035] The flow rate sensor module includes a turbine flow meter unit and a thermal flow meter unit. The turbine flow meter unit drives the internal turbine to rotate when the liquid flows through it, and the rotation frequency is proportional to the flow rate, thereby realizing the measurement of the flow rate. The thermal flow meter unit measures the flow rate through the temperature difference caused by the flow of liquid.

[0036] The flow rate calculation module calculates the obtained flow rate data to obtain the current drainage volume, and displays it in real time on the display device 1. The user can view the current drainage volume through the display device to further understand the outflow of peritoneal dialysis fluid.

[0037] When the flow rate is detected to be close to zero or to have abnormal fluctuations, the flow rate sensor module will send a signal to the controller module, and the controller module will trigger an alarm or interrupt the drainage operation based on this information.

[0038] When the drainage is about to be completed, the controller module reminds the user through the alarm module and the display device 1. The alarm module includes a sound alarm unit, a light signal unit and a display warning unit, which issues warnings through sound and light signals to help the user notice the drainage status in time.

[0039] Sound alarm unit: emits a sound prompt to remind the user that drainage is about to end.

[0040] Light signal unit: Provides visual signals so that the user can immediately recognize the status of the device.

[0041] Display screen warning unit: Displays specific warning information on the display device, including drainage time, flow rate and current system status.

[0042] The temperature sensing device 2 comprises: Temperature sensor module: used to monitor the temperature of peritoneal dialysis fluid in real time and trigger a signal when the temperature drops to the threshold; Controller module: configured to receive temperature sensor data and transmit control signals to coordinate the system; Alarm module: emits sound or light signals to remind the user that drainage has ended; Drainage control module: automatically stops drainage in response to alarm signals, and can control the valve status through manual switches.

[0043] In one embodiment, the temperature sensor module monitors the temperature of the peritoneal dialysis fluid in real time, and the controller module can accurately trigger an alarm signal when the drainage is completed. Such temperature monitoring can effectively avoid excessive drainage or misoperation, and ensure the safety of the drainage process.

[0044] Through the coordination of the controller module, the device can automatically issue an alarm when the temperature drops to the set threshold, and automatically stop drainage through the drainage control module, reducing the need for manual operation. It is particularly suitable for home patients or busy medical staff, greatly improving the convenience of use.

[0045] Further, 1. Temperature monitoring and signal triggering The temperature sensor module in the temperature sensing device 2 monitors the temperature of the peritoneal dialysis fluid in real time. The temperature sensor can accurately sense temperature changes and continuously send the monitored temperature data to the controller module. During the drainage process, as the fluid is gradually discharged, the temperature will gradually drop. When the temperature is detected to drop to a preset threshold, such as a value close to room temperature, the temperature sensor module will generate a trigger signal and transmit it to the controller module to indicate that the drainage is nearly completed.

[0046] 2. Signal processing and coordination of controller modules The controller module receives the trigger signal from the temperature sensor module and immediately starts the subsequent operation of the system. The main function of the controller module is to coordinate the operation of the entire system, manage the response of the alarm module and the drainage control module by processing sensor data and sending control signals.

[0047] After receiving the trigger signal that the temperature drops to the threshold, the controller module determines that the drainage is about to be completed and sends a control signal to the alarm module and the drainage control module.

[0048] The controller module acts as a data center and command center in the entire process, ensuring the coordinated work of each module, thereby achieving smooth drainage process monitoring and control.

[0049] 3. User prompts for the alarm module After receiving the control signal from the controller module, the alarm module immediately activates the sound and light alarm to prompt the user that the drainage has ended.

[0050] Sound alarm: The alarm module sends out a sound signal to inform the user of the current status, so that the user can know the drainage is completed at the first time.

[0051] Light signal: The alarm module also emits a light signal to provide additional visual prompts, which is particularly suitable for ensuring the effectiveness of information communication in noisy environments or hearing impairments.

[0052] The controller module includes a microcontroller unit, a data processing unit and a data judgment unit. Microcontroller unit: coordinates the modules and manages data flow, supporting specific microcontroller chips to meet computing needs; Data processing unit: receives temperature data for real-time processing; Data judgment unit: generates a control signal based on a preset temperature threshold and transmits it to the drainage control module to trigger an alarm or stop the operation.

[0053] The drainage control module includes a solenoid valve control unit and a manual valve control unit. The manual valve is used to manually control the drainage in an emergency situation. The solenoid valve can automatically respond to the microcontroller signal and support automatic flow cut-off in case of abnormal alarm.

[0054] In one embodiment, 1. Automatic response and flow cut-off function of the solenoid valve control unit During the drainage process, the solenoid valve control unit maintains real-time communication with the microcontroller and receives signal instructions from the microcontroller. When the temperature monitoring shows that the drainage is nearly completed or the flow rate monitoring shows an abnormal situation, the microcontroller will generate a signal to stop the drainage and transmit it to the solenoid valve control unit.

[0055] Automatic flow cut-off: After receiving the signal from the microcontroller, the solenoid valve control unit immediately triggers the solenoid valve to close. The function of the solenoid valve is to respond quickly when the microcontroller issues an instruction, automatically cut off the drainage channel, and ensure that the peritoneal dialysis fluid does not flow out excessively. This process is fully automated and can accurately control the end point of drainage to ensure that the drainage is within a safe range.

[0056] Abnormal situation handling: If abnormal temperature or flow rate data is detected during drainage, such as sudden changes in flow rate or abnormal temperature fluctuations, the microcontroller will immediately send out an alarm signal and notify the solenoid valve control unit to automatically cut off the flow. After receiving the abnormal signal, the solenoid valve control unit immediately closes the drainage valve to prevent the peritoneal dialysis fluid from continuing to be discharged, thus ensuring the safety of the patient to the greatest extent.

[0057] 2. Emergency manual intervention of manual valve control unit The drainage control module is also equipped with a manual valve control unit to achieve manual control in special or emergency situations. The design of the manual valve control unit allows the user to manually close or adjust the drainage channel in the event of automatic control failure or emergency.

[0058] Enable manual control: If the automatic control of the device fails, such as power outage, solenoid valve abnormality, or an emergency occurs during the drainage process, such as the patient feels uncomfortable, the user or medical staff can manually operate the valve to immediately terminate the drainage. This manual intervention function provides additional safety and allows users to control the drainage status at any time.

[0059] Easy to operate: The manual valve control unit is designed with simple and intuitive operation as the principle. Users can control the opening and closing of the drainage channel by rotating or pressing the valve without complicated operations. The manual valve can be used in emergencies or as a backup for conventional drainage, ensuring the reliability and flexibility of the drainage control process.

[0060] The air pump liquid flow rate measuring device 6 includes a flow rate sensor module, a flow rate calculation module and a display and recording module. The flow rate sensor module uses a turbine flow meter unit and a thermal flow meter unit to calculate the flow rate by detecting the flow rate change; the flow rate calculation module further provides a pulse signal and an output frequency to ensure the measurement accuracy.

[0061] In one embodiment, the solenoid valve control unit can automatically respond to the signal of the microcontroller, automatically close the drainage channel when the drainage is about to be completed or an abnormal situation occurs, and realize accurate automatic flow cut-off. This automatic control significantly reduces the risk of excessive drainage or accidental leakage, ensuring the safety of the patient. 1. Automatic response and flow cut-off function of the solenoid valve control unit During the drainage process, the solenoid valve control unit maintains real-time communication with the microcontroller and receives signal instructions from the microcontroller. When the temperature monitoring shows that the drainage is nearly completed or the flow rate monitoring shows an abnormal situation, the microcontroller will generate a signal to stop the drainage and transmit it to the solenoid valve control unit.

[0062] Automatic flow cut-off: After receiving the signal from the microcontroller, the solenoid valve control unit immediately triggers the solenoid valve to close. The function of the solenoid valve is to respond quickly when the microcontroller issues an instruction, automatically cut off the drainage channel, and ensure that the peritoneal dialysis fluid does not flow out excessively. This process is fully automated and can accurately control the end point of drainage to ensure that the drainage is within a safe range.

[0063] Abnormal situation handling: If abnormal temperature or flow rate data is detected during the drainage process, such as sudden changes in flow rate or abnormal temperature fluctuations, the microcontroller will immediately send out an alarm signal and notify the solenoid valve control unit to automatically cut off the flow. After receiving the abnormal signal, the solenoid valve control unit immediately closes the drainage valve to prevent the peritoneal dialysis fluid from continuing to be discharged, thus ensuring the safety of the patient to the greatest extent.

[0064] The flow rate sensor module includes a turbine flow meter unit and a thermal flow meter unit. The turbine flow meter unit is configured to calculate the flow rate by the rotation frequency of the liquid when it flows through the turbine, and the thermal flow meter unit is configured to measure the flow rate by temperature change. This module supports accurate measurement of liquid flow rate and is suitable for flow control of peritoneal dialysis fluid.

[0065] In one embodiment, 1. Flow rate measurement of turbine flow meter unit The turbine flow meter unit measures the flow rate by detecting the frequency at which the turbine rotates driven by the flow of liquid. The specific working principle is as follows: Liquid flow drives the turbine to rotate: When the peritoneal dialysis fluid flows through the turbine flowmeter unit, it drives the internal turbine to rotate. The rotation frequency is proportional to the flow rate, that is, the faster the flow rate, the higher the turbine rotation frequency.

[0066] Rotation frequency detection and flow rate calculation: The detection device in the turbine flow meter unit detects the rotation frequency of the turbine and converts the frequency signal into flow rate data. In this way, the turbine flow meter unit can measure the instantaneous flow rate of the liquid in real time and accurately.

[0067] Data output: The calculated flow rate data will be transmitted to the control system or flow rate calculation module for real-time monitoring and subsequent drainage flow calculation.

[0068] The advantage of the turbine flowmeter is its high precision. It is suitable for situations where the peritoneal dialysis fluid flow rate is relatively stable and can effectively reflect real-time flow rate data.

[0069] The alarm module includes a sound alarm unit, a light signal unit and a display screen warning unit. The sound alarm unit is used to issue audio prompts, the light signal unit is used to issue visual warnings, and the display screen is used to display warning information to remind medical staff or family members to pay attention to the drainage status in time.

[0070] In one embodiment, 1. The audio prompt of the sound alarm unit When the sound alarm unit detects that drainage is over or the device is abnormal, it will issue an audio prompt to remind the user. The working process is as follows: Signal reception and audio generation: When drainage is nearly completed or the device detects abnormal flow rate or temperature, the controller module will send a control signal to the sound alarm unit.

[0071] Audio prompt: After receiving the signal, the audio alarm unit will immediately generate an audio prompt. This prompt reminds the user of the current equipment status or possible abnormal conditions through a moderate volume of beeps or alarms.

[0072] Continuous or intermittent reminders: In some cases, the sound alarm can be set as an intermittent or continuous reminder. Intermittent sound reminders are suitable for scenarios where drainage is nearing the end, while continuous alarms are suitable for sudden abnormalities, ensuring that users immediately notice the problem.

[0073] The sound alarm unit can provide users with auditory alarm information in the first time, which is suitable for quick prompts in daily operations, allowing users to quickly respond and confirm the status of the equipment.

[0074] The temperature sensor module includes a thermistor PTC unit and a thermistor NTC unit. The resistance of the PTC unit increases when the temperature rises, and the resistance of the NTC unit decreases when the temperature decreases. Accurate temperature detection can be achieved by combining the two.

[0075] In one embodiment, 1. Temperature response characteristics of the PTC unit When the temperature of the PTC unit positive temperature coefficient thermistor increases, its resistance value increases accordingly, which is suitable for monitoring the temperature rise. Its working process is as follows: Resistance increases when temperature rises: When the temperature of the peritoneal dialysis fluid gradually rises, the resistance value of the PTC thermistor will increase with the temperature. This characteristic enables it to quickly detect the trend of rising temperature.

[0076] Signal transmission and response: When the PTC unit detects that the temperature exceeds the normal range, the change in resistance will be detected by the sensor module and converted into a signal and transmitted to the control system, indicating that the system temperature is rising.

[0077] Over-temperature alarm: If the temperature rises to the preset safety threshold, the control system will trigger the alarm module to remind the user. Temperature abnormalities during the drainage process will be fed back in time to avoid safety hazards caused by over-temperature.

[0078] The temperature rise response characteristics of the PTC unit enable it to respond quickly when the temperature of the peritoneal dialysis fluid rises, making it suitable for use in situations where drainage is about to end or temperature rise requires attention.

[0079] The data judgment unit includes a data reading unit and a preset temperature threshold unit. The data reading unit is connected to the preset temperature threshold unit. The data judgment unit is used to judge the temperature data and generate a control signal in combination with the preset threshold.

[0080] 2. Temperature response characteristics of NTC units The NTC unit negative temperature coefficient thermistor has a reduced resistance value when the temperature drops, making it suitable for monitoring temperature drops. Its working process is as follows: Resistance decreases as temperature decreases: As the temperature of the peritoneal dialysis fluid gradually decreases, the resistance value of the NTC thermistor decreases as the temperature decreases. As the temperature of the fluid gradually approaches room temperature during the drainage process, the NTC unit can accurately detect the temperature drop.

[0081] Signal conversion and transmission: When the NTC unit detects that the temperature is close to the preset drainage completion temperature threshold, the decrease in resistance will be recognized by the system as a signal that the drainage is close to completion. At this time, the NTC unit transmits the signal to the controller module to trigger the judgment of the end of drainage.

[0082] Drainage end alarm: If the temperature drops to the preset drainage completion temperature, the controller module will trigger the alarm module according to the signal of the NTC unit to notify the user that the drainage is over, ensuring that the entire process is completed under safe temperature conditions.

[0083] The temperature drop response characteristics of the NTC unit can effectively monitor the trend of gradually decreasing temperature, and are suitable for monitoring the temperature drop in peritoneal dialysis.

[0084] 3. Combination of PTC and NTC units and bidirectional temperature monitoring The combination of PTC unit and NTC unit enables the temperature sensor module to perform bidirectional detection of temperature changes, realizing comprehensive monitoring of temperature rise and fall: Improved temperature detection accuracy: PTC and NTC units respond to temperature rise and fall respectively, and the combination of the two enables the temperature sensor module to identify temperature changes more accurately. Through the combination of the two resistors, the system can accurately and sensitively sense small changes in temperature, providing high-precision temperature monitoring.

[0085] Data integration and alarm triggering: The temperature sensor module will integrate the resistance changes of PTC and NTC to form real-time temperature data. If the temperature is detected to exceed the set threshold or is lower than the temperature standard for drainage completion, the system will trigger the alarm module based on the changes in these two resistances to remind the user to take necessary measures.

[0086] Adapt to different temperature change scenarios: In the environment of rising temperature, the PTC unit responds first; in the process of temperature drop, the NTC unit takes effect quickly. The combination of the two enables the device to adapt to different temperature change scenarios, and can ensure the stability and accuracy of temperature monitoring regardless of whether the temperature rises or falls.

[0087] The display device 1 is configured to display the drainage time, drainage volume and current system status information, and can switch to display different information so that medical staff can fully understand the drainage process.

[0088] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A peritoneal dialysis drainage completion alarm interception metering device, comprising a player (3), characterized in that: One end of the player (3) is fixedly connected to a communication connection line (5), and one end of the communication connection line (5) is connected to a temperature sensing device (2), wherein the temperature sensing device (2) comprises a temperature sensor module, a controller module, an alarm module and a drainage control module, and is configured to monitor the temperature of the peritoneal dialysis fluid, and to issue an alarm and cut off the drainage when the temperature drops to a preset threshold after the drainage is completed; the other end of the temperature sensing device (2) is connected to a display device (1), and the interior of the temperature sensing device (2) is fixedly connected to a connection line (4), and is configured to display the drainage time and drainage volume; an air pump liquid flow rate measuring device (6) is added, and is configured to monitor the liquid flow rate in real time through the flow rate sensor module, and to calculate and display the drainage volume based on the measurement result. The entire device is easy to install and carry, and is suitable for use by medical staff or patients at home; An upper fixing plate (8) is provided on one side of the outer wall of the air pump device for measuring liquid flow rate (6), a lower fixing plate (7) is fixedly connected to one side of the outer wall of the air pump device for measuring liquid flow rate (6), a first buckle (9) is provided on one side of the outer wall of the upper fixing plate (8), and a second buckle (10) is provided on the other side of the upper fixing plate (8).

2. A peritoneal dialysis drainage completion alarm interception metering device according to claim 1, characterized in that: The temperature sensing device (2) comprises: Temperature sensor module: used to monitor the temperature of peritoneal dialysis fluid in real time and trigger a signal when the temperature drops to the threshold; Controller module: configured to receive temperature sensor data and transmit control signals to coordinate the system; Alarm module: emits sound or light signals to remind the user that drainage has ended; Drainage control module: automatically stops drainage in response to alarm signals, and can control the valve status through manual switches.

3. A peritoneal dialysis drainage completion alarm interception metering device according to claim 2, characterized in that: The controller module includes a microcontroller unit, a data processing unit and a data judgment unit. Microcontroller unit: coordinates the modules and manages data flow, supporting specific microcontroller chips to meet computing needs; Data processing unit: receives temperature data for real-time processing; Data judgment unit: generates a control signal based on a preset temperature threshold and transmits it to the drainage control module to trigger an alarm or stop the operation.

4. A peritoneal dialysis drainage completion alarm interception metering device according to claim 2, characterized in that: The drainage control module includes a solenoid valve control unit and a manual valve control unit. The manual valve is used to manually control drainage in an emergency situation. The solenoid valve can automatically respond to microcontroller signals and support automatic flow cut-off when an abnormal alarm occurs.

5. A peritoneal dialysis drainage completion alarm interception metering device according to claim 1, characterized in that: The air pump liquid flow rate measuring device (6) comprises a flow rate sensor module, a flow rate calculation module and a display and recording module. The flow rate sensor module uses a turbine flow meter unit and a thermal flow meter unit to calculate the flow rate by detecting the flow rate change; the flow rate calculation module further provides a pulse signal and an output frequency to ensure the measurement accuracy.

6. A peritoneal dialysis drainage completion alarm interception metering device according to claim 1, characterized in that: The flow rate sensor module includes a turbine flow meter unit and a thermal flow meter unit. The turbine flow meter unit is configured to calculate the flow rate through the rotation frequency of the liquid when it flows through the turbine, and the thermal flow meter unit is configured to measure the flow rate through temperature changes. This module supports accurate measurement of liquid flow rate and is suitable for flow control of peritoneal dialysis fluid.

7. A peritoneal dialysis drainage completion alarm interception metering device according to claim 1, characterized in that: The alarm module includes a sound alarm unit, a light signal unit and a display screen warning unit. The sound alarm unit is used to issue an audio prompt, the light signal unit is used to issue a visual warning, and the display screen is used to display warning information to remind medical staff or family members to pay attention to the drainage status in time.

8. A peritoneal dialysis drainage completion alarm interception metering device according to claim 1, characterized in that: The temperature sensor module includes a thermistor PTC unit and a thermistor NTC unit. The resistance of the PTC unit increases when the temperature rises, and the resistance of the NTC unit decreases when the temperature decreases. Accurate temperature detection is achieved by combining the two.

9. A peritoneal dialysis drainage completion alarm interception metering device according to claim 3, characterized in that: The data judgment unit includes a data reading unit and a preset temperature threshold unit. The data reading unit is connected to the preset temperature threshold unit. The data judgment unit is used to judge the temperature data and generate a control signal in combination with the preset threshold.

10. A peritoneal dialysis drainage completion alarm interception metering device according to claim 8, characterized in that: The display device (1) is configured to display drainage time, drainage volume and current system status information, and can switch to display different information, so that medical staff can fully understand the drainage process.

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