Enteral nutrition heating device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, especially for enteral nutrition heating device, including nutrition liquid bottle, the nutrition liquid bottle bottom intercommunication has infusion tube, the nutrition liquid bottle outside is provided with heating cover, be provided with flexible heat conduction sheet between heating cover and nutrition liquid bottle, a plurality of heat conduction salient points are provided with in the side of flexible heat conduction sheet towards nutrition liquid bottle, heating cover bottom is provided with in -tube liquid heating unit, through the cooperation of flexible heat conduction sheet and heat conduction salient point in heating cover, break the static air layer between bottle wall and heating structure, promote bottle in nutrition liquid heating evenness, again through the segmented heating of in -tube liquid heating unit and the gradient power output of heating element, both solve the problem that traditional device bottle is unevenly heated, local overheating, also avoid the risk that the nutrition liquid in pipeline is scalded in the position close to human body, make the nutrition liquid temperature be close to human body temperature all the time, guarantee patient infusion comfort and safety.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an enteral nutrition heating device. Background Technology

[0002] Enteral nutrition support is an important way to provide nutrition to patients who are unable to eat orally in clinical practice. If the temperature of the nutrient solution is too low during infusion, especially if it is used directly after being taken out of the refrigerator, it can easily cause complications such as gastrointestinal discomfort, abdominal distension, and diarrhea in patients. Therefore, the nutrient solution at room temperature or refrigerated needs to be heated before infusion to bring its temperature close to the human body temperature in order to ensure the comfort and safety of patients.

[0003] However, in practical applications, traditional heating devices typically use direct radiant heating of the bottle. Due to the poor thermal conductivity of the nutrient solution bottle and its contents, and the air gap between the heating sleeve and the bottle wall, thermal resistance is high, thermal efficiency is low, and the nutrient solution inside the bottle is unevenly heated, often resulting in localized overheating while most areas remain underheated. Secondly, current heating of infusion tubing often uses heating tubes with uniform power distribution. However, the temperature of the nutrient solution is a dynamic accumulation process as it flows through the tubing. Uniform heating can cause the liquid temperature near the patient to become excessively high due to continuous heating, posing a risk of scalding the patient's digestive tract mucosa. Meanwhile, the end near the bottle may not be heated effectively due to insufficient initial temperature. These problems of uneven heating inside the bottle and uncontrolled heating of the tubing together affect the safety and effectiveness of clinical use. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide an enteral nutrition heating device to solve the aforementioned issues.

[0005] To achieve the above objectives, an enteral nutrition heating device includes a nutrient solution bottle with an infusion tube connected to its bottom. A heating sleeve is provided on the outside of the nutrient solution bottle, and a flexible heat-conducting plate is provided between the heating sleeve and the nutrient solution bottle. The flexible heat-conducting plate has several heat-conducting protrusions on the side facing the nutrient solution bottle. An in-tube liquid heating unit is provided at the bottom of the heating sleeve. The in-tube liquid heating unit includes a near-bottle section heating cover, a middle section heating cover, and a near-human section heating cover. Continuous heating elements are installed inside the heating sleeve, the near-bottle section heating cover, the middle section heating cover, and the near-human section heating cover.

[0006] Preferably, a plurality of the thermally conductive bumps are arranged in an array uniformly on the sidewall of the flexible thermally conductive sheet.

[0007] Preferably, a control unit is installed on the side wall of the heating jacket, and the control unit is electrically connected to the heating element.

[0008] Preferably, the near-bottle section heating cover, the middle section heating cover, and the near-human section heating cover are fitted onto the outside of the infusion tube.

[0009] Preferably, the distribution density of the heating elements in the heating shroud near the bottle is greater than that in the heating shroud in the middle section, and the distribution density of the heating elements in the heating shroud in the middle section is greater than that in the heating shroud near the human body.

[0010] Preferably, temperature sensors are installed between the near-bottle section heating cover and the heating sleeve, as well as at the end of the near-human section heating cover.

[0011] Preferably, the outer wall of the heating sleeve is fitted with adhesive tape, and the outer walls of the near-bottle section heating cover, the middle section heating cover, and the near-human section heating cover are all fitted with Velcro.

[0012] The utility model has the following beneficial effects:

[0013] By combining the flexible heat-conducting sheet and heat-conducting protrusions inside the heating jacket, the static air layer between the bottle wall and the heating structure is broken, improving the uniformity of heating of the nutrient solution inside the bottle. Then, through the segmented heating of the liquid heating unit inside the tube and the gradient power output of the heating element, the problems of uneven heating and local overheating inside the bottle in traditional devices are solved. At the same time, the risk of scalding the patient's digestive tract due to excessively high temperature of the nutrient solution near the human body in the pipeline is avoided, so that the temperature of the nutrient solution is always close to the human body temperature, ensuring the patient's infusion comfort and safety. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the heating jacket and the liquid heating unit inside the tube in this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the heating jacket and the liquid heating unit inside the tube in this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the liquid heating unit inside the tube in this utility model.

[0018] In the diagram: 1. Nutrient solution bottle; 11. Infusion tube; 2. Heating sleeve; 21. Flexible heat-conducting sheet; 22. Heat-conducting protrusion; 23. Control unit; 3. Intra-tube liquid heating unit; 31. Heating cover near the bottle; 32. Heating cover in the middle section; 33. Heating cover near the human body; 4. Heating element; 5. Temperature sensor; 6. Adhesive tape; 61. Velcro. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0020] Example:

[0021] like Figure 1 —4 shows: an enteral nutrition heating device, including a nutrient solution bottle 1, with an infusion tube 11 connected to the bottom of the nutrient solution bottle 1, a heating sleeve 2 on the outside of the nutrient solution bottle 1, a flexible heat-conducting sheet 21 between the heating sleeve 2 and the nutrient solution bottle 1, and several heat-conducting protrusions 22 on the side of the flexible heat-conducting sheet 21 facing the nutrient solution bottle 1, and an in-tube liquid heating unit 3 at the bottom of the heating sleeve 2, which includes a near-bottle section heating cover 31, a middle section heating cover 32 and a near-human section heating cover 33. Continuous heating elements 4 are installed inside the heating sleeve 2, the near-bottle section heating cover 31, the middle section heating cover 32 and the near-human section heating cover 33.

[0022] The nutrient solution bottle 1 serves as a storage container for the nutrient solution, providing a source of nutrition for patient infusion. Its bottom is connected to an infusion tube 11, which acts as a nutrient solution delivery channel, enabling the nutrient solution to be transported from the bottle to the patient's body. A heating sleeve 2 is installed on the outside of the nutrient solution bottle 1. The heating sleeve 2 provides protection and a mounting carrier for heating the bottle, preventing heat loss while securing the internal heating structure. A flexible heat-conducting sheet 21 is installed between the heating sleeve 2 and the nutrient solution bottle 1. The flexible heat-conducting sheet 21 is made of aluminum foil or a flexible metal sheet, possessing good thermal conductivity and deformation resistance. The flexible heat-conducting sheet 21, facing the nutrient solution bottle 1, has several heat-conducting protrusions 22 on its side. These protrusions 22 can be hemispherical, conical, or other raised structures that disrupt the static air layer, allowing air to convect between the flexible heat-conducting sheet 21 and the nutrient solution bottle 1, thus enhancing heat exchange efficiency. The protrusions 22 also reduce the contact thermal resistance between the bottle wall and the flexible heat-conducting sheet 21, increasing heating efficiency. The bottom of the heating sleeve 2 is equipped with an in-tube liquid heating unit 3, which heats the nutrient solution inside the infusion tube 11. The liquid undergoes secondary heating to compensate for temperature loss after the bottle is heated. The liquid heating unit 3 inside the pipe includes a near-bottle heating cover 31, a middle heating cover 32, and a near-human heating cover 33. This three-section structure adapts to the temperature change pattern during the flow of the nutrient solution. Continuous heating elements 4 are installed inside the heating sleeve 2, the near-bottle heating cover 31, the middle heating cover 32, and the near-human heating cover 33. The continuous heating elements 4 achieve integrated control of the heating of the bottle and the pipeline, ensuring a continuous heating process and controllable temperature. The heat-conducting sheet 21 and the heat-conducting protrusion 22 work together to break the static air layer between the bottle wall and the heating structure, improving the uniformity of heating of the nutrient solution inside the bottle. Then, through the segmented heating of the liquid heating unit 3 inside the tube and the gradient power output of the heating element 4, it not only solves the problems of uneven heating and local overheating inside the bottle in traditional devices, but also avoids the risk of scalding the patient's digestive tract due to excessively high temperature near the human body in the tubing. This keeps the temperature of the nutrient solution close to the human body temperature, ensuring patient comfort and safety during infusion. At the same time, the integrated heating design simplifies the operation process and improves the convenience of clinical use.

[0023] Several heat-conducting protrusions 22 are evenly arranged in an array on the side wall of the flexible heat-conducting sheet 21. The even array arrangement ensures that the contact points between the heat-conducting protrusions 22 and the bottle wall of the nutrient solution bottle 1 are evenly distributed. Each heat-conducting protrusion 22 can serve as an independent heat conduction path to evenly transfer the heat generated by the heating element 4 to all areas of the bottle. At the same time, regular turbulence microchannels are formed between adjacent heat-conducting protrusions 22, and air can convect efficiently in the microchannels, further enhancing the heat exchange efficiency and avoiding the problems of local overheating of the nutrient solution in the bottle and uneven overall temperature caused by traditional heating devices.

[0024] A control unit 23 is installed on the side wall of the heating jacket 2, and the control unit 23 is electrically connected to the heating element 4. The control unit 23 integrates a main controller, a signal receiving module, a power adjustment module, and a status display panel. The main controller uses a microprocessor chip as the core computing and control component of the device, responsible for receiving and processing various signals and outputting precise control commands. The signal receiving module is used to receive external input signals, such as the target temperature setting signal input by medical staff through the operation panel and the real-time temperature detection signals transmitted by each temperature sensor 5, and converts the signals into electrical signals that the main controller can recognize. The power adjustment module is electrically connected to the heating element 4 and can adjust the power output of the heating element 4 by changing the current according to the commands output by the main controller, so as to achieve dynamic control of the heating intensity. The status display panel is used to intuitively display the current heating temperature, target temperature, and other parameters. Information such as temperature and the working status of heating element 4 can be viewed in real time by medical staff. Medical staff can input the target temperature through the status display panel, and the signal receiving module transmits the set signal to the main controller. At the same time, each temperature sensor 5 collects the temperature data at the outlet of the nutrient solution bottle 1 and the end of the infusion tube 11 near the human body in real time, and continuously feeds the detection signal back to the main controller. The main controller compares the set temperature with the real-time detected temperature. If the real-time temperature is lower than the set temperature, it outputs an increase power command to the power adjustment module to increase the current input of heating element 4 and enhance the heating intensity. If the real-time temperature is close to or reaches the set temperature, it outputs a power maintenance or power reduction command to avoid the temperature from getting too high. If abnormal temperature fluctuations or abnormal current of heating element 4 are detected, the main controller will also trigger the alarm function of the status display panel to remind medical staff to investigate in time.

[0025] The near-bottle section heating cover 31, the middle section heating cover 32, and the near-human section heating cover 33 are sleeved on the outside of the infusion tube 11. The near-bottle section heating cover 31, the middle section heating cover 32, and the near-human section heating cover 33 are connected end to end and sleeved on the outside of the infusion tube 11. The sleeved structure can facilitate the installation and operation of medical staff and can fit against the outer wall of the infusion tube 11, reducing heat loss during the heating process and ensuring that the heat generated by the heating element 4 is efficiently transferred to the nutrient solution in the tube, avoiding the temperature drop of the nutrient solution in the tube due to heat loss.

[0026] The distribution density of heating elements 4 in the heating shroud 31 near the bottle is greater than that in the heating shroud 32 in the middle section, and the distribution density of heating elements 4 in the heating shroud 32 in the middle section is greater than that in the heating shroud 33 near the human body. This density gradient design conforms to the temperature change pattern of the nutrient solution in the pipeline. When the nutrient solution first flows out of the bottle, the initial temperature is relatively low. At this time, the heating elements 4 with the highest distribution density inside the heating shroud 31 near the bottle can continuously output higher power to quickly raise the temperature. Meanwhile, the temperature of the nutrient solution located in the heating shroud 32 in the middle section has already begun to rise, and the heating elements 4 with the highest distribution density inside the heating shroud 32 in the middle section have a higher distribution density. The heating element 4 of equal density has a moderate output power, which maintains a stable temperature by heating gently. The nutrient solution located in the heating cover 33 near the human body is close to the human body and the temperature is close to the target value. The heating element 4 with the lowest density inside the heating cover 33 near the human body will output a lower power to avoid the temperature from being too high due to continuous heating. Through the gradient distribution of the heating element 4, the pipeline heating is achieved on-demand energy supply, so that the temperature of the nutrient solution in the infusion tube 11 rises steadily from the inlet to the outlet. Finally, when it is infused into the patient's body, the temperature is accurately matched to the human body temperature, avoiding burns to the digestive tract mucosa.

[0027] Temperature sensors 5 are installed between the heating cover 31 and the heating sleeve 2 near the bottle and at the end of the heating cover 33 near the human body. The temperature sensor 5 located between the heating cover 31 and the heating sleeve 2 near the bottle can monitor the initial temperature of the nutrient solution when it flows out of the bottle in real time, providing front-end data support for the control unit 23 to adjust the power of the heating element 4. If the initial temperature is too low, the control unit 23 can automatically increase the power of the heating element 4 near the bottle to ensure that the temperature rises quickly. The temperature sensor 5 installed at the end of the heating cover 33 near the human body can accurately detect the final temperature of the nutrient solution before it is infused into the patient's body, forming an end temperature verification. Generally, if the temperature exceeds the safe range later, the heating power can be adjusted in time.

[0028] The heating sleeve 2 has adhesive tape 6 installed on its outer wall. Velcro 61 is installed on the outer walls of the near-bottle section heating cover 31, the middle section heating cover 32, and the near-human section heating cover 33. The heating sleeve 2 adopts an open design with pre-dated, closable installation gaps on its side walls. Medical personnel can directly slip the heating sleeve 2 onto the outside of the nutrient solution bottle 1 from the opening, without needing to slip it on from the top or bottom of the bottle. The open design also allows the heating sleeve 2 to tightly wrap around the nutrient solution bottle 1, ensuring a complete fit between the internal flexible heat-conducting sheet 21 and the bottle wall. Adhesive tape 6 is installed on the outer wall of the heating sleeve 2 at the corresponding opening. The adhesive tape 6 is made of high-strength medical-grade adhesive material, which can firmly fix the position of the heating sleeve 2 when closed, and provides good adhesion. The heating sleeve 2 can be repeatedly opened and closed, making it convenient for medical staff to adjust its position or remove and replace it at any time. The heating sleeve 31 near the bottle, the heating sleeve 32 in the middle section, and the heating sleeve 33 near the human body also adopt an open structure, and each opening is equipped with Velcro 61. Medical staff can directly wrap the heating sleeve 31 near the bottle, the heating sleeve 32 in the middle section, and the heating sleeve 33 near the human body onto the corresponding area of ​​the infusion tube 11 from the opening. The Velcro 61 has a hook side and a rough side, which are respectively installed on both sides of the opening of the heating sleeve. After closing, the heating sleeve 31 near the bottle, the heating sleeve 32 in the middle section, and the heating sleeve 33 near the human body can be tightly fitted to the infusion tube 11.

[0029] The working principle of this utility model is as follows: First, open the opening of the heating sleeve 2 and wrap the nutrient solution bottle 1 from the outside, ensuring that the heat-conducting protrusions 22 on the side wall of the flexible heat-conducting sheet 21 are completely in contact with the bottle wall. Then, tightly close and fix it with the adhesive tape 6 at the opening of the heating sleeve 2 to prevent displacement. Next, sequentially open the openings of the near-bottle section heating cover 31, the middle section heating cover 32, and the near-human section heating cover 33, and wrap the tubing from the corresponding position on the side wall of the infusion tube 11. The near-bottle section heating cover 31 corresponds to the infusion tube 11 at the bottom outlet of the nutrient solution bottle 1, the middle section heating cover 32 covers the middle area of ​​the infusion tube 11, and the near-human section heating cover 33 is close to the patient's infusion end. Each heating cover is closed and fixed with the Velcro 61 on the outer wall, ensuring that the inner wall is in contact with the outer wall of the infusion tube 11. After installation, set the parameters and start the system. Medical staff set the target parameters through the operation panel of the control unit 23 according to the initial state of the nutrient solution and the patient's tolerance. After setting the target temperature and confirming it on the display screen, the heating element 4 is activated. The heating element 4 generates heat, which is quickly transferred to the flexible heat-conducting sheet 21. Because the flexible heat-conducting sheet 21 is in close contact with the bottle wall and has heat-conducting protrusions 22, the contact thermal resistance is reduced, allowing heat to be directly transferred to the bottle wall of the nutrient solution bottle 1 through the protrusions. The array distribution of the heat-conducting protrusions 22 ensures that the heat is evenly distributed to all areas of the bottle, avoiding local overheating. At the same time, the heat-conducting protrusions 22 break the static air layer between the bottle wall and the heat-conducting sheet, forming a turbulent microchannel between the heat-conducting protrusions 22 and the bottle wall. The air convection in the channel further enhances the heat exchange, ultimately achieving uniform heating of the nutrient solution in the nutrient solution bottle 1. Meanwhile, the heating elements 4 in each section of the heating hood perform secondary heating of the nutrient solution in the infusion tube 11 according to the gradient power, compensating for the temperature loss after the nutrient solution flows out of the bottle and ensuring that the real-time temperature is stable within the target temperature range.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. An enteral nutrition heating device, comprising a nutrient solution bottle (1), wherein the bottom of the nutrient solution bottle (1) is connected to an infusion tube (11), characterized in that: A heating sleeve (2) is provided on the outside of the nutrient solution bottle (1). A flexible heat-conducting sheet (21) is provided between the heating sleeve (2) and the nutrient solution bottle (1). A number of heat-conducting protrusions (22) are provided on the side of the flexible heat-conducting sheet (21) facing the nutrient solution bottle (1). A tube liquid heating unit (3) is provided at the bottom of the heating sleeve (2). The tube liquid heating unit (3) includes a near-bottle section heating cover (31), a middle section heating cover (32), and a near-human section heating cover (33). Continuous heating elements (4) are installed inside the heating sleeve (2), the near-bottle section heating cover (31), the middle section heating cover (32), and the near-human section heating cover (33).

2. The enteral nutrition heating device according to claim 1, characterized in that: Several of the thermally conductive bumps (22) are arranged in an array and uniformly on the sidewall of the flexible thermally conductive sheet (21).

3. The enteral nutrition heating device according to claim 1, characterized in that: The heating sleeve (2) is equipped with a control unit (23) on its side wall, and the control unit (23) is electrically connected to the heating element (4).

4. The enteral nutrition heating device according to claim 1, characterized in that: The near-bottle section heating cover (31), the middle section heating cover (32), and the near-human section heating cover (33) are fitted onto the outside of the infusion tube (11).

5. The enteral nutrition heating device according to claim 1, characterized in that: The distribution density of the heating element (4) in the near-bottle section heating cover (31) is greater than that in the middle section heating cover (32), and the distribution density of the heating element (4) in the middle section heating cover (32) is greater than that in the near-human section heating cover (33).

6. The enteral nutrition heating device according to claim 1, characterized in that: Temperature sensors (5) are installed between the near-bottle section heating cover (31) and the heating sleeve (2) and at the end of the near-human section heating cover (33).

7. The enteral nutrition heating device according to claim 1, characterized in that: The outer wall of the heating sleeve (2) is fitted with adhesive tape (6), and the outer walls of the near-bottle section heating cover (31), the middle section heating cover (32) and the near-human body section heating cover (33) are all fitted with Velcro (61).

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