Enteral nutrition temperature control device

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses an enteral nutrition temperature control device, which comprises a shell assembly, the shell assembly comprises a front shell and a rear shell, the front shell and the rear shell are detachably connected through a buckle and a screw, a display screen is mounted on the front surface of the front shell, and a main control circuit board and a battery circuit board are connected in an inner cavity of the rear shell through screws; four corner plates are fixedly connected to the inner wall of the rear shell, and a lithium battery is clamped among the four corner plates. The contact path of the infusion tube and the heating sleeve is prolonged through the double-helix rib structure, a nutrient solution is heated in a turbulent flow state, and uneven temperature difference inside and outside is avoided; meanwhile, two temperature measuring assemblies are arranged to monitor the temperature of the tail end and the liquid outlet end of the heating area respectively; the microcontroller is based on a closed-loop control algorithm, the power of the PTC ceramic heating piece is accurately adjusted through the PWM driving module, the temperature is stabilized within a preset range in real time, the situation that the intestines and stomach of a patient are affected by too high or too low temperature is avoided, and the safety and effectiveness of enteral nutrition treatment are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an enteral nutrition temperature control device. Background Technology

[0002] Enteral nutrition plays a crucial role in clinical nutrition therapy. Data shows that approximately 30% of hospitalized patients and a large number of patients at home require enteral nutrition. For example, patients with Crohn's disease require total enteral nutrition during their active phase to maintain their nutritional needs, and these patients can receive continuous enteral nutrition therapy using portable enteral nutrition pumps.

[0003] However, temperature control of enteral nutrition solutions has always been a challenge for patients. Especially in winter, when room temperature is low, achieving constant-temperature infusion of enteral nutrition becomes a critical issue that urgently needs to be addressed. Existing enteral nutrition devices have significant shortcomings in temperature control, making it difficult to meet patients' needs for constant-temperature infusion of enteral nutrition solutions in different environments. This greatly affects the effectiveness of enteral nutrition therapy and the patient experience. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an enteral nutrition temperature control device that features a closed-loop temperature control function that combines real-time temperature monitoring with dynamic power adjustment, ensuring a constant infusion temperature unaffected by ambient temperature and flow rate, thus solving the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an enteral nutrition temperature control device, comprising: a housing assembly, which includes a front housing and a rear housing, the front housing and the rear housing being detachably connected by snaps and screws, a display screen being mounted on the front of the front housing, a main control circuit board and a battery circuit board being connected to the inner cavity of the rear housing by screws, four corner plates being fixedly connected to the inner wall of the rear housing, a lithium battery being snapped between the four corner plates, a micro controller being mounted on the outer surface of the main control circuit board, and a hinge rod being fixedly connected to the bottom of both the front housing and the rear housing, with a heat-insulating cover plate being rotatably connected to the outer surface of the hinge rod; A heating assembly includes a heating sleeve, which is a hollow cylindrical structure with a PTC ceramic heating element embedded inside. A double helical rib is integrally formed on the outer wall of the heating sleeve, and a helical groove is formed between the inner sides of the double helical rib. The helical groove is used to embed an enteral nutrition infusion tube, and the double helical rib has several breaks along its helical path. A temperature measuring component includes a tube clamp, a support frame fixedly connected to the outer wall of the tube clamp, and a temperature sensor for detecting the temperature of the nutrient solution connected to the outer surface of the support frame by screws. The main control circuit board is configured to receive the temperature signal fed back by the temperature sensor, compare it with a preset temperature value, and adjust the power supply to the PTC ceramic heating element through a closed-loop control algorithm.

[0006] Preferably, the helix angle of the double helical rib is set to 45°-50°, the spacing between the cuts along the helical path of the double helical rib is 5cm, the top of the heating sleeve is fixedly connected to the lower surface of the front shell, and four sets of PTC ceramic heating elements are embedded in the inner wall of the heating sleeve around its axial direction.

[0007] Preferably, there are two heat-insulating covers, one of which has a U-shaped opening at the bottom and the other has a U-shaped opening at the top. The U-shaped opening is used for the enteral nutrition infusion tube to pass through and be wound around the spiral groove of the double spiral rib.

[0008] Preferably, a snap-on plate is fixedly connected to the side of the insulation cover away from the hinge rod, and the two insulation covers are connected by snap-on plates on their side walls, and when the two insulation covers are snapped together, their inner walls abut against the double helical ribs.

[0009] Preferably, the temperature measuring components are configured as two sets, one set is clamped to the outer wall of the tail end of the enteral nutrition infusion tube through its tube clamp, and the probe of this set of temperature sensors is in contact with the outer wall at this position; the other set of temperature measuring components is clamped to the outer wall of the enteral nutrition infusion tube near the outlet end, and the probe of this set of temperature sensors is in contact with the outer wall at this position.

[0010] Preferably, an arc-shaped protrusion is fixedly connected to the back of the rear shell, and two lugs are fixedly connected to the back of the rear shell. A back clip is rotatably connected between the two lugs via a pin. A torsion spring is sleeved on the outer wall of the pin, and a finger plate that cooperates with the back clip is fixedly connected to the side wall of the rear shell.

[0011] Preferably, a Type-C charging interface is fixedly connected to the outer surface of the battery circuit board. The Type-C charging interface is electrically connected to the lithium battery through a charging management chip. The charging management chip is integrated on the battery circuit board, and the charging management chip is connected to the microcontroller on the main control circuit board through an SPI communication interface.

[0012] Preferably, a power button and a control button are embedded in the front of the front shell. The microcontroller is an STM32F103 series microcontroller. The microcontroller establishes a data connection with the display screen through an I2C communication interface to transmit the real-time temperature data detected by the temperature sensor and the current power supply parameters of the PTC ceramic heating element to the display screen for display. At the same time, the microcontroller is electrically connected to the control button on the front shell through a GPIO interface to receive the temperature setting command input by the control button.

[0013] Preferably, the microcontroller is electrically connected to the PTC ceramic heating element through a PWM drive module. The PWM drive module is integrated on the main control circuit board. The microcontroller generates a corresponding PWM pulse signal based on a closed-loop control algorithm and adjusts the current output to the PTC ceramic heating element through the PWM drive module, thereby achieving precise control of the power supply.

[0014] Preferably, the microcontroller is electrically connected to the battery circuit board and is used to collect the remaining power data of the lithium battery in real time. When the remaining power is lower than a preset threshold, the microcontroller sends a low power warning signal to the display screen. A power indicator light is installed on the front of the front shell.

[0015] Compared with the prior art, the present invention provides an enteral nutrition temperature control device, which has the following beneficial effects: This invention extends the contact path between the infusion tube and the heating sleeve through a double-helix rib structure, and with a 45°-50° helical angle design, allows the nutrient solution to be heated in a turbulent state, avoiding uneven temperature differences between the inside and outside. At the same time, two sets of temperature measuring components are set up to monitor the temperature at the tail end of the heating area and the outlet end, forming a "double protection". The microcontroller is based on a closed-loop control algorithm and uses a PWM drive module to precisely adjust the power of the PTC ceramic heating element, stabilizing the temperature within the preset range in real time. The display screen can simultaneously display temperature and power data, which not only avoids the impact of excessively high or low temperatures on the patient's gastrointestinal tract, but also reduces the error of a single temperature measurement, greatly improving the safety and effectiveness of enteral nutrition therapy. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the explosive disassembly of the housing assembly in this invention; Figure 3 This is a front view of the housing assembly in this invention, excluding the front shell. Figure 4 This is a perspective view of the housing assembly in this invention; Figure 5 This is a top view of the housing assembly in this invention; Figure 6This is an exploded perspective view of the heating component in this invention; Figure 7 For the present invention Figure 1 A magnified 3D view of part A; Figure 8 This is another embodiment of the present invention; Figure 9 This is a front side view of the second embodiment of the present invention; Figure 10 This is a rear view diagram of the second embodiment of the present invention.

[0017] The components include: 1. Housing assembly; 101. Front shell; 102. Rear shell; 103. Display screen; 104. Main control circuit board; 105. Battery circuit board; 106. Lithium battery; 107. Microcontroller; 108. Hinge rod; 109. Insulation cover plate; 110. Buckle plate; 111. Arc-shaped protrusion; 112. Ear block; 113. Back clip; 114. Finger plate; 115. Type-C charging interface; 2. Heating assembly; 201. Heating sleeve; 202. PTC ceramic heating element; 203. Double spiral rib; 3. Temperature measuring assembly; 301. Tube clamp; 302. Support frame; 303. Temperature sensor; 400. Enteral nutrition infusion tube. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-7 An enteral nutrition temperature control device includes: a housing assembly 1, which includes a front housing 101 and a rear housing 102, the front housing 101 and the rear housing 102 being detachably connected by snaps and screws, a display screen 103 being installed on the front of the front housing 101, a main control circuit board 104 and a battery circuit board 105 being connected to the inner cavity of the rear housing 102 by screws, four corner plates being fixedly connected to the inner wall of the rear housing 102, a lithium battery 106 being snapped between the four corner plates, a microcontroller 107 being installed on the outer surface of the main control circuit board 104, and hinge rods 108 being fixedly connected to the bottom of both the front housing 101 and the rear housing 102, with a heat-insulating cover plate 109 being rotatably connected to the outer surface of the hinge rods 108; Heating assembly 2 includes a heating sleeve 201, which is a hollow cylindrical structure and has a PTC ceramic heating element 202 embedded inside. A double helical rib 203 is integrally formed on the outer wall of the heating sleeve 201. A helical groove is formed between the inner sides of the double helical rib 203. The helical groove is used to embed the enteral nutrition infusion tube 400. The double helical rib 203 has several breaks along its helical path. Temperature measuring component 3 includes a tube clamp 301, a support frame 302 fixedly connected to the outer wall of the tube clamp 301, and a temperature sensor 303 for detecting the temperature of the nutrient solution connected to the outer surface of the support frame 302 by screws. The main control circuit board 104 is configured to receive the temperature signal fed back by the temperature sensor 303, compare it with the preset temperature value, and adjust the power supply to the PTC ceramic heating element 202 through a closed-loop control algorithm.

[0020] Furthermore, the helix angle of the double helix rib 203 is set to 45°-50°, the spacing between the cuts of the double helix rib 203 along its helix path is 5cm, the top of the heating sleeve 201 is fixedly connected to the lower surface of the front shell 101, and four sets of PTC ceramic heating elements 202 are embedded in the inner wall of the heating sleeve 201 around its axial direction.

[0021] Furthermore, there are two heat-insulating cover plates 109. One heat-insulating cover plate 109 has a U-shaped opening at the bottom end, and the other heat-insulating cover plate 109 has a U-shaped opening at the top end. The U-shaped opening is used for the enteral nutrition infusion tube 400 to pass through and be able to be wound in the spiral tube groove of the double spiral rib 203.

[0022] By wrapping the enteral nutrition infusion tube 400 around the outer wall of the heating sleeve 201 and embedding it into the spiral groove formed by the double spiral ribs 203, and simultaneously fastening two heat-insulating covers 109, with the U-shaped opening on the heat-insulating cover 109 allowing the enteral nutrition infusion tube 400 to pass through; from a heating effect perspective, the structure of the double spiral ribs 203 extends the contact path between the enteral nutrition infusion tube 400 and the heating sleeve 201, while the nutrient solution flowing in the enteral nutrition infusion tube 400 flows along a spiral path in the heating area, changing the direct flow state to a turbulent state. This, combined with the PTC ceramic heating element 202 inside the heating sleeve 201, makes the nutrient solution heated more evenly, avoiding pipe... The problem of high heating on the outer wall and low heating on the inside of the enteral nutrition solution is addressed; the 45°-50° spiral angle design further optimizes the contact area and heat transfer efficiency; the snap-fit ​​insulation cover 109 effectively reduces heat loss in the heating area, maintains stable temperature within the area, avoids the influence of ambient temperature on the nutrient solution temperature, and ensures temperature control; the U-shaped opening not only solves the problem of the enteral nutrition infusion tube 400 passing through the insulation cover 109, but also provides a certain limiting effect on the enteral nutrition infusion tube 400. Combined with the embedding effect of the double spiral ribs 203, it prevents the enteral nutrition infusion tube 400 from shifting during heating, ensuring that it is always in the optimal heating position.

[0023] Furthermore, a snap-on plate 110 is fixedly connected to the side of the insulation cover 109 away from the hinge rod 108. The two insulation covers 109 are snapped together by the snap-on plate 110 on their side walls, and when the two insulation covers 109 are snapped together, their inner walls abut against the double helical ribs 203.

[0024] The two heat-insulating covers 109 are rotatably connected by a hinge rod 108. This ensures that the two heat-insulating covers 109 do not obstruct or hinder the insertion of the enteral nutrition infusion tube 400 into the double helical rib 203. After the enteral nutrition infusion tube 400 is inserted into the double helical rib 203, the two heat-insulating covers 109 are snapped together by the snap plates 110 on their side walls. This allows the heat-insulating covers 109 to be quickly wrapped around the outer wall of the double helical rib 203. This provides a certain degree of heat preservation and also limits the position of the enteral nutrition infusion tube 400, preventing it from falling out of the double helical rib 203.

[0025] Furthermore, the temperature measuring components 3 are configured as two sets. One set is clamped to the outer wall of the tail end of the enteral nutrition infusion tube 400 heating area by its tube clamp 301, and the probe of the temperature sensor 303 of this set is in contact with the outer wall at this position. The tube clamp 301 of the other set of temperature measuring components 3 is clamped to the outer wall of the enteral nutrition infusion tube 400 near the outlet end, and the probe of the temperature sensor 303 of this set is in contact with the outer wall at this position.

[0026] Two sets of temperature measuring components 3 are clamped to the outer wall of the enteral nutrition infusion tube 400 at the heating end and near the outlet end, respectively, using tube clamps 301. The temperature sensor 303 probe is in contact with the corresponding outer wall position, enabling dual monitoring and precise control of the nutrient solution temperature. The temperature measuring component 3 at the heating end provides real-time feedback on the instantaneous temperature of the nutrient solution after heating by the heating component 2, allowing the microcontroller 107 to quickly determine whether the current heating power is sufficient to reach the preset temperature, facilitating timely adjustment of the power supply to the PTC ceramic heating element 202. The temperature measuring component 3 near the outlet end monitors the final temperature of the nutrient solution to be infused into the patient, effectively providing a final check on temperature control and preventing deviations from the preset value due to environmental temperature changes during transmission. The two components work together to form a "dual guarantee" for temperature monitoring, reducing errors that may occur with single temperature measurement and ensuring that the temperature of the nutrient solution delivered to the patient always meets requirements, further improving temperature control accuracy and the safety and effectiveness of enteral nutrition therapy.

[0027] Furthermore, an arc-shaped protrusion 111 is fixedly connected to the back of the rear shell 102, and two lugs 112 are fixedly connected to the back of the rear shell 102. A back clip 113 is rotatably connected between the two lugs 112 via a pin. A torsion spring is sleeved on the outer wall of the pin. A finger plate 114 that works with the back clip 113 is fixedly connected to the side wall of the rear shell 102.

[0028] By pinching the finger plate 114 and the back clip 113, the back clip 113 can be easily unfolded. With the help of the arc-shaped protrusion 111, the back clip 113 can be clamped onto the tube wall of the infusion stand, thus fixing the back shell 102 and the entire temperature control device.

[0029] Furthermore, a type-c charging interface 115 is fixedly connected to the outer surface of the battery circuit board 105. The type-c charging interface 115 is electrically connected to the lithium battery 106 through a charging management chip. The charging management chip is integrated on the battery circuit board 105, and the charging management chip is connected to the microcontroller 107 on the main control circuit board 104 through an SPI communication interface.

[0030] Furthermore, a power button and a control button are embedded on the front of the front cover 101. The microcontroller 107 adopts an STM32F103 series microcontroller. The microcontroller 107 establishes a data connection with the display screen 103 through the I2C communication interface to transmit the real-time temperature data detected by the temperature sensor 303 and the current power supply parameters of the PTC ceramic heating element 202 to the display screen 103 for display. At the same time, the microcontroller 107 is electrically connected to the control button on the front cover 101 through the GPIO interface to receive the temperature setting command input by the control button.

[0031] Furthermore, the microcontroller 107 is electrically connected to the PTC ceramic heating element 202 through the PWM drive module. The PWM drive module is integrated on the main control circuit board 104. The microcontroller 107 generates the corresponding PWM pulse signal based on the closed-loop control algorithm and adjusts the current output to the PTC ceramic heating element 202 through the PWM drive module, thereby achieving precise control of the power supply.

[0032] By setting two sets of temperature measuring components 3, one set is clamped at the end of the heating area of ​​the enteral nutrition infusion tube 400, and the other set is close to the outlet end of the enteral nutrition infusion tube 400. The temperature sensor 303 of the component detects the temperature of the nutrient solution in the tube in real time. It is worth noting that the tube clamp 301 of the temperature measuring component 3 does not squeeze the enteral nutrition infusion tube 400, but is used to attach the probe of the temperature sensor 303 to its outer wall. The temperature sensor 303 transmits the temperature signal to the microcontroller 107 on the main control circuit board 104. The microcontroller 107 uses an STM32F103 series microcontroller as the control core. It first compares and analyzes the received real-time temperature data with the preset temperature value set by the control button, and then generates a closed-loop control algorithm. The corresponding control commands are then transmitted. Subsequently, the microcontroller 107 converts the control commands into PWM pulse signals through the PWM drive module integrated on the main control circuit board 104. By adjusting the duty cycle of the pulse signals, the current output to the PTC ceramic heating element 202 is changed, thereby precisely controlling the heating power. If the real-time temperature is lower than the preset value, the power supply is increased to enhance the heating intensity. If the real-time temperature is close to or reaches the preset value, the power supply is reduced to maintain a constant temperature. At the same time, the microcontroller 107 also transmits data such as real-time temperature and current heating power to the display screen 103 through the I2C communication interface, which is convenient for users to monitor in real time. The whole process forms a closed loop of dynamic feedback regulation to ensure that the nutrient solution temperature is stable within the preset range and achieve precise temperature control.

[0033] Furthermore, the microcontroller 107 is electrically connected to the battery circuit board 105 to collect the remaining power data of the lithium battery 106 in real time. When the remaining power is lower than a preset threshold, the microcontroller 107 sends a low power warning signal to the display screen 103. A power indicator light is installed on the front of the front cover 101.

[0034] By using a Type-C charging interface 115 to charge the lithium battery 106, it has the advantage of strong charging interface versatility and is compatible with common Type-C charging devices, making it convenient for users to replenish the temperature control device at any time in home or clinical settings. The charging management chip can accurately control the charging process, such as implementing overcharge, over-discharge, and overcurrent protection, to prevent the lithium battery 106 from being damaged due to abnormal charging, extend battery life, and ensure charging safety. The charging management chip is connected to the microcontroller 107 through the SPI communication interface, which allows the microcontroller 107 to obtain the charging status (such as charging progress and whether it is fully charged) and remaining power data of the lithium battery 106 in real time. When the remaining power is lower than the preset threshold, the microcontroller 107 can promptly send a low power warning signal through the power indicator light installed on the front of the front shell 101 to remind the user to charge, ensuring that the device will not suddenly stop working due to insufficient power and ensuring the continuous stability of the enteral nutrition temperature control process.

[0035] In use, first, by pinching the finger plate 114 on the side wall of the rear shell 102 and the back clip 113 on the back, after unfolding the back clip 113, use the arc-shaped protrusion 111 on the back of the rear shell 102 in conjunction with the back clip 113 to clamp the entire device onto the tube wall of the infusion stand, ensuring the stability of the device; then, by rotating the hinge rod 108 to open the two heat-insulating covers 109, the enteral nutrition infusion tube 400 is wrapped around the outer wall of the heating sleeve 201 and embedded into the spiral tube groove formed by the double spiral ribs 203, and then the enteral nutrition infusion tube 400 is passed through the two... The U-shaped opening on the insulation cover 109 is used to lock the two covers together via the snap-fit ​​plate 110 on the side wall of the insulation cover 109, so that the inner wall of the cover abuts against the double helical ribs 203, thereby limiting the position of the enteral nutrition infusion tube 400 and keeping the heating area warm. Next, two sets of temperature sensing components 3 are installed on the enteral nutrition infusion tube 400 via tube clamps 301, one set clamped to the outer wall of the tail end of the heating area, and the other set clamped to the outer wall near the outlet end, ensuring that the probes of both temperature sensors 303 are in close contact with the outer wall of the infusion tube. Then... Press the power button on the front of the front cover 101 to start the device. Input the preset temperature value through the control button. The microcontroller 107 will receive the instruction through the GPIO interface, and the display screen 103 will light up and start displaying relevant data. After the device is running, the temperature sensor 303 will detect the temperature of the nutrient solution in the infusion tube in real time and transmit the signal to the microcontroller 107 on the main control circuit board 104. The microcontroller 107 compares the real-time temperature with the preset temperature and adjusts the power supply of the PTC ceramic heating element 202 through the PWM drive module based on the closed-loop control algorithm. At the same time, it transmits the real-time temperature, current heating power and other data to the display screen 103 for user monitoring through the I2C communication interface. During the heating process, the microcontroller 107 will collect the remaining power of the lithium battery 106 in real time. If the power is lower than the preset threshold, it will send a low power warning signal through the power indicator light on the front cover 101. At this time, the device needs to be charged through the type-c charging interface 115 on the battery circuit board 105. The charging process is controlled by the charging management chip to ensure charging safety and battery life.

[0036] In another embodiment, such as Figure 8-10 As shown, the heating component and the temperature measuring component are each provided in two sets and are arranged on the lower side of the housing component; Based on the above embodiments, in clinical work, some nutrient solutions have high osmotic pressure and need to be diluted. However, the capacity of the nutrient solution bottle is the same as the volume of the nutrient solution, which is 500ml. Water cannot be added. Currently, medical staff use another empty bottle to fill half a bottle of nutrient solution and then add water separately. The whole process is cumbersome and easily causes nutrient solution contamination. By using two sets of heating components, water supply pipes can be added directly, which can directly alleviate the problem of excessively high osmotic pressure of the nutrient solution. At the same time, the display shows the heating temperature and the ambient temperature. In outdoor environments, or due to regional and seasonal differences, the heating can be adjusted to ultimately heat the food to a temperature suitable for the human body.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An enteral nutrition temperature control device, characterized in that, include: The housing assembly (1) includes a front housing (101) and a rear housing (102). The front housing (101) and the rear housing (102) are detachably connected by snaps and screws. A display screen (103) is installed on the front of the front housing (101). A main control circuit board (104) and a battery circuit board (105) are connected to the inner cavity of the rear housing (102) by screws. Four corner plates are fixedly connected to the inner wall of the rear housing (102). A lithium battery (106) is snapped between the four corner plates. A micro controller (107) is installed on the outer surface of the main control circuit board (104). A hinge rod (108) is fixedly connected to the bottom of both the front housing (101) and the rear housing (102). A heat insulation cover plate (109) is rotatably connected to the outer surface of the hinge rod (108). Heating assembly (2) includes a heating sleeve (201), which is a hollow cylindrical structure and has a PTC ceramic heating element (202) embedded inside. A double helical rib (203) is integrally formed on the outer wall of the heating sleeve (201). A helical groove is formed between the inner sides of the double helical rib (203). The helical groove is used to embed an enteral nutrition infusion tube (400). The double helical rib (203) has several breaks along its helical path. Temperature measuring component (3) includes a tube clamp (301), a support frame (302) is fixedly connected to the outer wall of the tube clamp (301), and a temperature sensor (303) for detecting the temperature of the nutrient solution is connected to the outer surface of the support frame (302) by screws. The main control circuit board (104) is configured to receive the temperature signal fed back by the temperature sensor (303), compare it with the preset temperature value, and adjust the power supply to the PTC ceramic heating element (202) through a closed-loop control algorithm.

2. The enteral nutrition temperature control device according to claim 1, characterized in that: The helix angle of the double helical rib (203) is set to 45°-50°, the spacing between the cuts of the double helical rib (203) along its helical path is 5cm, the top of the heating sleeve (201) is fixedly connected to the lower surface of the front shell (101), and four sets of PTC ceramic heating elements (202) are embedded on the inner wall of the heating sleeve (201) around its axial direction.

3. The enteral nutrition temperature control device according to claim 1, characterized in that: Two heat-insulating covers (109) are provided. One of the heat-insulating covers (109) has a U-shaped opening at the bottom end, and the other heat-insulating cover (109) has a U-shaped opening at the top end. The U-shaped opening is used for the enteral nutrition infusion tube (400) to pass through and be able to be wound in the spiral groove of the double helical rib (203).

4. The enteral nutrition temperature control device according to claim 1, characterized in that: The insulation cover (109) is fixedly connected to a buckle plate (110) on the side away from the hinge rod (108). The two insulation covers (109) are connected by the buckle plate (110) on their side walls, and when the two insulation covers (109) are engaged, their inner walls abut against the double helical ribs (203).

5. The enteral nutrition temperature control device according to claim 1, characterized in that: The temperature measuring components (3) are configured in two groups. One group is clamped to the outer wall of the tail end of the enteral nutrition infusion tube (400) through its tube clamp (301), and the probe of the temperature sensor (303) of this group is in contact with the outer wall at this position. The tube clamp (301) of the other group of temperature measuring components (3) is clamped to the outer wall of the enteral nutrition infusion tube (400) near the outlet end, and the probe of the temperature sensor (303) of this group is in contact with the outer wall at this position.

6. The enteral nutrition temperature control device according to claim 1, characterized in that: An arc-shaped protrusion (111) is fixedly connected to the back of the rear shell (102), and two ear blocks (112) are fixedly connected to the back of the rear shell (102). A back clip (113) is rotatably connected between the two ear blocks (112) through a pin. A torsion spring is sleeved on the outer wall of the pin. A finger plate (114) that works with the back clip (113) is fixedly connected to the side wall of the rear shell (102).

7. The enteral nutrition temperature control device according to claim 1, characterized in that: A type-c charging interface (115) is fixedly connected to the outer surface of the battery circuit board (105). The type-c charging interface (115) is electrically connected to the lithium battery (106) through a charging management chip. The charging management chip is integrated on the battery circuit board (105), and the charging management chip is connected to the microcontroller (107) on the main control circuit board (104) through an SPI communication interface.

8. The enteral nutrition temperature control device according to claim 1, characterized in that: The front of the front shell (101) is embedded with a power button and a control button. The microcontroller (107) is an STM32F103 series microcontroller. The microcontroller (107) establishes a data connection with the display screen (103) through the I2C communication interface to transmit the real-time temperature data detected by the temperature sensor (303) and the current power supply parameters of the PTC ceramic heating element (202) to the display screen (103) for display. At the same time, the microcontroller (107) is electrically connected to the control button on the front shell (101) through the GPIO interface to receive the temperature setting command input by the control button.

9. The enteral nutrition temperature control device according to claim 1, characterized in that: The microcontroller (107) is electrically connected to the PTC ceramic heating element (202) through a PWM drive module. The PWM drive module is integrated on the main control circuit board (104). The microcontroller (107) generates a corresponding PWM pulse signal based on a closed-loop control algorithm and adjusts the current output to the PTC ceramic heating element (202) through the PWM drive module, thereby achieving precise control of the power supply.

10. The enteral nutrition temperature control device according to claim 1, characterized in that: The microcontroller (107) is electrically connected to the battery circuit board (105) and is used to collect the remaining power data of the lithium battery (106) in real time. When the remaining power is lower than a preset threshold, the microcontroller (107) sends a low power warning signal to the display screen (103). A power indicator light is installed on the front of the front shell (101).

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