A portable automatic nasogastric feeding pump and method of use thereof

Abstract

The present application relates to the technical field of nasal feeding pump, disclose a kind of portable automatic nasal feeding pump and its using method, wherein, nasal feeding pump includes nasal feeding box body, nasal feeding box body inside is provided with mounting plate, mounting plate is opened with installation port, installation port is inserted with storage cylinder, first cleaning pipe is also provided on mounting plate, the position of nasal feeding box body inside below mounting plate is provided with injection cylinder, injection cylinder is communicated together with storage cylinder by being provided with first docking assembly between, second cleaning pipe is also communicated and set on injection cylinder, first cleaning pipe and second cleaning pipe can be connected together, one side wall of nasal feeding box body is provided with injection tube, the discharge part of injection cylinder is communicated together with injection tube by being provided with second docking assembly, the other side wall of nasal feeding box body is provided with electric telescopic rod, the telescopic part of electric telescopic rod is connected together with the piston part of injection cylinder after being movably inserted into nasal feeding box body;The present application has the advantages of comprehensive cleaning and reusable.

Description

Technical Field

[0001] This invention relates to a portable automatic nasal feeding pump and its method of use, belonging to the technical field of nasal feeding pumps. Background Technology

[0002] Nasogastric feeding is a medical procedure that involves inserting a soft tube (usually a nasogastric tube) through the patient's nose, allowing it to travel through the esophagus to the stomach or small intestine, thereby providing nutrition, hydration, or medication to patients who are unable to eat orally.

[0003] In existing technologies, nasogastric feeding is mostly achieved using a nasogastric pump. Healthcare professionals connect the nasogastric tube to the pump, then add the appropriate nutrients or medications to the storage container within the pump. The pump's piston mechanism then infuses the nutrients or medications into the patient's stomach or small intestine. Currently, common nasogastric pumps primarily use a method of multiple feedings followed by continuous dripping. However, because the amount of nutrients that can be placed in the storage container at one time is limited, if all the nutrient solution or food in the container is pushed into the patient's esophagus, healthcare professionals must remove the container and refill it when the patient needs to eat again. This is cumbersome and time-consuming. Furthermore, common nasogastric pumps cannot heat the nutrients, which can easily lead to diarrhea in patients. Therefore, in the prior art, Chinese utility model patent application number CN202320175378.X discloses a nasogastric feeding pump, which, through the setting of an electric telescopic rod, a push plate, a squeezing block, a push rod, a storage cylinder, a piston plate, a discharge port, a heating element, a first control valve, and a feeding tube, enables patients to be fed in a timely manner, avoiding the need to add food to the feeding tube when there is insufficient food inside. The staff can add food directly from the feeding funnel, which is also convenient for the staff to operate. In addition, the heating element can also warm the food to prevent patients from experiencing diarrhea.

[0004] However, it still has the following problems in actual use: When the nasogastric pump needs to be cleaned after use, since its storage cylinder and feed pipe are installed in the body of the nasogastric pump in a fixed connection manner, only the feed pipe can be disassembled separately. This makes it difficult to thoroughly clean the nasogastric pump, which makes it easy for food residue to accumulate inside the nasogastric pump and prevents it from being reused. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, the present invention provides a portable automatic nasal feeding pump and its usage method.

[0006] The technical solution of the present invention is as follows: In a first aspect, the present invention provides a portable automatic nasal feeding pump, comprising a nasal feeding box, characterized in that: the top of the nasal feeding box is an open structure, a horizontally arranged mounting plate is provided inside the nasal feeding box, an installation port is provided on the mounting plate, a storage cylinder is inserted into the installation port, a first cleaning tube is also provided through the mounting plate, an injection cylinder is provided inside the nasal feeding box below the mounting plate, the injection cylinder and the storage cylinder are connected together by a docking component, a second cleaning tube is also provided on the injection cylinder, the first cleaning tube and the second cleaning tube are docked together, an injection tube is provided on one side wall of the nasal feeding box, the discharge part of the injection cylinder is connected to the injection tube, and an electric telescopic rod is provided on the other side wall of the nasal feeding box, the telescopic part of the electric telescopic rod is movably inserted into the nasal feeding box and connected to the piston part of the injection cylinder.

[0007] Furthermore, an installation ring is provided on the outer wall of the storage cylinder. The installation ring is designed to be unable to pass through the installation port. When the storage cylinder is inserted into the installation port, the installation ring is tightly fitted against the top surface of the installation plate.

[0008] Furthermore, the docking assembly includes a docking block 1 fixedly disposed through the bottom of the storage cylinder and a docking block 2 connected to the injection cylinder. The bottom of the docking block 1 is provided with a through-hole 1, and a sealing ball is disposed inside the docking block 1. The sealing ball cannot pass through the through-hole 1, and under its own weight, the sealing ball is positioned to block the through-hole 1. The docking block 1 is provided with a through-hole 2 on the block segment inside the storage cylinder, and the through-hole 2 connects the docking block 1 and the storage cylinder. The docking block 2 can pass through the through-hole 1 into the docking block 1. The side wall of the docking block 2 is provided with a through-hole 3. When the storage cylinder is inserted into the installation port, the docking block 2 passes through the through-hole 1 into the docking block 1 and pushes the sealing ball upward to above the through-hole 2, so that the through-hole 2 and the through-hole 3 are connected, thereby connecting the injection cylinder and the storage cylinder together.

[0009] Furthermore, the syringe is equipped with a first liquid pump, one end of which is connected to the syringe and the other end is connected to the docking block 2. The docking block 2 is connected to the syringe through the first liquid pump. The first liquid pump is equipped with a first flow meter for detecting the liquid flow rate in the first liquid pump.

[0010] Furthermore, a second liquid pump is also provided inside the nasogastric feeding box. One end of the second liquid pump is connected to the injection tube, and the other end is connected to the discharge section of the injection cylinder. The discharge section of the injection cylinder is connected to the injection tube through the second liquid pump. A second flow meter for detecting the liquid flow rate inside the second liquid pump is provided on the second liquid pump.

[0011] Furthermore, the nasogastric feeding box is also equipped with an electrical control box, which contains a controller for program control. The outer wall of the nasogastric feeding box is also equipped with control buttons for issuing commands and a display screen for displaying data. The controller is electrically connected to the electric telescopic rod, the first liquid pump, the first flow meter, the second liquid pump, the second flow meter, the control buttons, and the display screen.

[0012] Furthermore, an electric heating element for heating the outer wall of the syringe is provided on the outer wall of the syringe, and a temperature sensor for detecting the internal temperature of the syringe is embedded on the inner wall of the syringe. Both the electric heating element and the temperature sensor are electrically connected to the controller.

[0013] Furthermore, the outer wall of the nasogastric feeding box is also equipped with an audible and visual alarm for emitting an audible and visual alarm, which is electrically connected to the controller.

[0014] Furthermore, the top of the nasogastric feeding box is hinged to a box cover, and a handle is fixedly provided on the top of the box cover. The nasogastric feeding box and the box cover are also connected together by a spring lock.

[0015] Secondly, the present invention provides a method for using the aforementioned portable automatic nasal feeding pump, comprising the following steps: When administering nasogastric feeding, medical staff connect the nasogastric tube to the injection tube, then add the required amount of nutrients to the storage container. The added nutrients enter the injection container through the docking assembly. Then, the medical staff controls the electric telescopic rod to inject the nutrients from the injection container into the injection tube. During cleaning, medical staff remove the storage cylinder from the nasogastric tube for cleaning. Then, cleaning solution is injected into the first cleaning tube. The cleaning solution passes through the first and second cleaning tubes and then enters the syringe. Afterward, the medical staff controls the electric telescopic rod to inject the cleaning solution from the syringe into the injection tube.

[0016] The present invention has the following beneficial effects: This invention, through the inclusion of an installation plate, an installation port, a first cleaning tube, a second cleaning tube, and an electric telescopic rod, allows the storage cylinder to be detachably connected to the nasogastric feeding box via the installation port. This enables medical personnel to remove the storage cylinder from the feeding box for thorough cleaning when necessary. The connection between the first and second cleaning tubes allows for easy cleaning of the syringe and injection tubing by adding cleaning fluid to the first cleaning tube and using the electric telescopic rod. Compared to existing technologies, this invention offers the advantages of comprehensive cleaning and reusability. Attached Figure Description

[0017] Figure 1This is an isometric schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure during nasogastric feeding according to the present invention; Figure 3 This is a schematic diagram of the structure during the cleaning process of the present invention; Figure 4 for Figure 2 Enlarged view of point A in the image; Figure 5 for Figure 3 Enlarged view of point B in the image; Figure 6 This is a schematic diagram of the module connection of the present invention.

[0018] The reference numerals in the figure are as follows: 1. Nasogastric feeding box body; 2. Mounting plate; 3. Mounting port; 4. Storage cylinder; 5. First cleaning tube; 6. Injection cylinder; 7. Connecting assembly; 71. Connecting block one; 72. Connecting block two; 73. Port one; 74. Sealing ball; 75. Port two; 76. Port three; 77. First liquid pump; 78. First flow meter; 8. Second cleaning tube; 9. Injection tube; 10. Electric telescopic rod; 11. Mounting ring; 12. Second liquid pump; 13. Second flow meter; 14. Electrical control box; 15. Controller; 16. Control buttons; 17. Display screen; 18. Electric heating element; 19. Temperature sensor; 20. Audible and visual alarm; 21. Box cover; 22. Handle; 23. Spring lock. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] Example: Please refer to Figures 1-6 This embodiment provides a portable automatic nasal feeding pump and its usage method. Firstly, the portable automatic nasal feeding pump includes a feeding box 1 with an open top. The feeding box 1 houses components necessary for nasal feeding. A lid 21 is hinged to the top of the feeding box 1, covering it. A handle 22 is fixedly mounted on the top of the lid 21. The feeding box 1 and the lid 21 are connected by a spring lock 23. When needed, the lid 21 is opened by unlocking the spring lock 23, allowing for nasal feeding using the components inside the feeding box 1. When not in use, the lid 21 is locked to the feeding box 1 by locking the spring lock 23. Medical personnel can then lift the feeding box 1 using the handle 22 for easy carrying.

[0021] To ensure that this automatic nasal feeding pump can perform nasal feeding normally, in this embodiment, the components installed inside the nasal feeding box 1 are as follows: The nasogastric feeding box 1 has a horizontally positioned mounting plate 2 with an installation opening 3. A storage cylinder 4 is inserted into the installation opening 3, passing through the mounting plate 2. To ensure the connection between the storage cylinder 4 and the mounting plate 2 and prevent it from easily falling out of the installation opening 3, an installation ring 11 is fixedly installed on the outer wall of the storage cylinder 4. The installation ring 11 is designed to prevent it from passing through the installation opening 3. When the storage cylinder 4 is inserted into the installation opening 3, the installation ring 11 is flush against the top surface of the mounting plate 2, thus restricting the storage cylinder 4 from passing through the installation opening 3. A vertically positioned first cleaning tube 5 also passes through the mounting plate 2. A horizontally placed syringe 6 is located below the mounting plate 2 inside the nasogastric feeding box 1. The syringe 6 and the storage cylinder 4 are connected by a docking assembly 7. A vertically arranged second cleaning tube 8 is also connected to the top wall of the syringe 6. The first cleaning tube 5 and the second cleaning tube 8 are docked together, and a sealing rubber seal is used between them to ensure a tight seal and prevent liquid leakage. A horizontally arranged injection tube 9 is provided on the left side wall of the nasogastric feeding box 1, and it is fixedly inserted through the left side wall. The discharge section of the syringe 6 is connected to the injection tube 9. An electric telescopic rod 10 is provided on the right side wall of the nasogastric feeding box 1. The telescopic part of the electric telescopic rod 10 is inserted into the nasogastric feeding box 1 and fixedly connected to the piston part of the syringe 6, so that the piston part of the electric telescopic rod 10 can drive the piston part of the syringe 6 to move accordingly when it moves.

[0022] In this embodiment, the docking assembly 7 includes a docking block 1 71 fixedly disposed through the bottom of the storage cylinder 4 and a docking block 2 72 connected to the top wall of the injection cylinder 6. The bottom of docking block 1 71 has an opening 73. A sealing ball 74 is movably disposed inside docking block 1 71, preventing it from passing through opening 1 73, and sealing the opening 1 73 under its own weight. An opening 2 75 is provided on a segment of docking block 1 71 located inside the storage cylinder 4, connecting the interior of docking block 1 71 to the storage cylinder 4. Docking block 2 72 has an open bottom structure, with its bottom connected to the interior of the injection cylinder 6. Docking block 2 72 can movably penetrate into docking block 1 71 through opening 1 73, and when it does so, it can push the sealing ball 74 upwards. An opening 3 76 is also provided on the side wall of docking block 2 72. When the storage cylinder 4 is inserted into the installation port 3, the second docking block 72 passes through the first docking block 71 through the first port 73 and pushes the sealing ball 74 upward to the top of the second port 75 so that the second port 75 and the third port 76 are connected. Thus, the storage cylinder 4 can be connected to the injection cylinder 6 through the connection of the second port 75 and the third port 76.

[0023] With the aforementioned setup, the storage cylinder 4 is detachably connected to the nasogastric feeding box 1 via the mounting port 3, allowing medical staff to remove the storage cylinder 4 from the nasogastric feeding box 1 for thorough cleaning when cleaning is required. The connection between the first cleaning tube 5 and the second cleaning tube 8 allows for cleaning of the syringe 6 and syringe 9 when cleaning is needed. This can be achieved by adding cleaning fluid to the first cleaning tube 5 and using the pushing action of the electric telescopic rod 10 to allow the cleaning fluid to flow within the syringe 6 and syringe 9. Compared to existing technologies, this method enables a very comprehensive cleaning of the nasogastric feeding pump.

[0024] Since precise control of the amount of nasogastric feeding is often required during the process, in this embodiment, the docking assembly 7 further includes a first liquid pump 77. One end of the first liquid pump 77 is connected to the syringe 6, and the other end is connected to the docking block 72. The docking block 72 is connected to the syringe 6 through the first liquid pump 77. The first liquid pump 77 is equipped with a first flow meter 78 for detecting the flow rate of the liquid within the first liquid pump 77. With the first liquid pump 77 and the first flow meter 78, when the first liquid pump 77 starts working, it can draw the nutrient solution from the storage cylinder 4 into the syringe 6, thereby accelerating the flow of the nutrient solution and shortening the overall time of the nasogastric feeding operation. By detecting the flow rate of the liquid flowing through the first liquid pump 77 and considering the extraction rate of the first liquid pump 77, the first flow meter 78 can calculate the specific amount of nutrient solution drawn into the syringe 6 by the first liquid pump 77, facilitating precise control of the amount of nasogastric feeding.

[0025] After nasogastric feeding, it is often necessary to aspirate gastric fluid some time later to assess the patient's digestion. Therefore, in this embodiment, a second liquid pump 12 is also installed inside the nasogastric feeding box 1. One end of the second liquid pump 12 is connected to the injection tube 9, and the other end is connected to the discharge section of the injection cylinder 6. The discharge section of the injection cylinder 6 is connected to the injection tube 9 via the second liquid pump 12. A second flow meter 13 is installed on the second liquid pump 12 to detect the flow rate of the liquid within it. With the second liquid pump 12 and the second flow meter 13, when the second liquid pump 12 starts working, it can aspirate the patient's gastric fluid back into the injection cylinder 6 through the injection tube 9. By detecting the flow rate of gastric fluid flowing through the second liquid pump 12 and considering the aspiration rate of the second liquid pump 12, the second flow meter 13 can calculate the specific amount of gastric fluid aspirated into the injection cylinder 6 by the second liquid pump 12, allowing medical personnel to make an assessment.

[0026] To enhance the intelligence of this nasogastric pump and facilitate its use by medical staff, in this embodiment, an electrical control box 14 is also provided inside the nasogastric feeding box 1. The electrical control box 14 is provided with a controller 15 for program control. The outer wall of the nasogastric feeding box 1 is also provided with control buttons 16 for issuing commands, a display screen 17 for displaying data, and an audible and visual alarm 20 for issuing audible and visual alarms. The outer wall of the syringe 6 is also provided with an electric heating element 18 for heating the outer wall of the syringe 6. The inner wall of the syringe 6 is also embedded with a temperature sensor 19 for detecting the internal temperature of the syringe 6. The controller 15 is electrically connected to the electric telescopic rod 10, the first liquid pump 77, the first flow meter 78, the second liquid pump 12, the second flow meter 13, the control buttons 16, the display screen 17, the audible and visual alarm 20, the electric heating element 18, and the temperature sensor 19. The controller 15 can read the data detected by the first flow meter 78, the second flow meter 13, and the temperature sensor 19 and perform corresponding calculations according to its preset program. The controller 15 can control the working status of the electric telescopic rod 10, the first liquid pump 77, the second liquid pump 12, the audible and visual alarm 20, and the electric heating element 18 according to its preset program. The controller 15 can display relevant data to medical personnel through the display screen 17, such as the values ​​detected by the temperature sensor 19, the specific amount of nutrient solution pumped into the syringe 6 by the first liquid pump 77, and the specific amount of gastric fluid pumped into the syringe 6 by the second liquid pump 12. Medical personnel can issue commands to the controller 15 through the control buttons 16, such as adjusting the heating temperature of the electric heating element 18. The circuit control and data processing described above are routine operations that can be performed by those skilled in the art based on actual conditions and required functions, so their principles will not be elaborated further.

[0027] Secondly, this embodiment provides a method for using the aforementioned portable automatic nasal feeding pump, including the following steps: During nasogastric feeding, medical staff use control button 16 to command controller 15 to activate electric telescopic rod 10, adjusting the piston component of syringe 6 to the left side of second cleaning tube 8 to prevent subsequent nutrients entering syringe 6 from flowing out of second cleaning tube 8. Then, medical staff connect the nasogastric tube to injection tube 9 and add the required amount of nutrients to storage cylinder 4. When adding nutrients to storage cylinder 4, medical staff can add them directly or remove storage cylinder 4 from nasogastric feeding box 1 before adding. When removing storage cylinder 4 from nasogastric feeding box 1 to add nutrients, the nutrients entering storage cylinder 4 will not flow out of opening 73 due to the action of first sealing ball 74. When storage cylinder 4 is placed in nasogastric feeding box 1, first sealing ball 74 is lifted by connecting block 72. At this time, the nutrients in storage cylinder 4 can sequentially reach the first liquid pump 77 through opening 75 and opening 76. Then, the controller 15 controls the first liquid pump 77 to operate, drawing nutrients from the storage cylinder 4 into the injection cylinder 6. The controller 15 reads the value from the first flow meter 78. Once the amount of drawn-in nutrients reaches a preset value, the controller 15 stops the first liquid pump 77. Simultaneously, the controller 15 displays the amount of nutrients entering the injection cylinder 6 on the display screen 17 for medical personnel to record. Next, the controller 15 controls the electric heating element 18 to operate, heating the injection cylinder 6 to heat the nutrients inside. The heating temperature controller 15 can also control the power of the electric heating element 18. The temperature sensor 19 monitors the temperature of the nutrients in the injection cylinder 6 in real time. Once the desired temperature is reached, the controller 15 stops the electric heating element 18 and controls the electric telescopic rod 10 to push the piston of the injection cylinder 6, injecting the nutrients into the injection tube 9 for nasal feeding. During this process, the controller 15 controls the first liquid pump 77 to be in the off state to prevent nutrients from flowing out from the docking block 2 72. At the same time, the controller 15 controls the second liquid pump 12 to be in the on state, at which time the second liquid pump 12 acts as a channel.

[0028] During nasogastric feeding, if any abnormality occurs, such as when the temperature sensor 19 detects an excessively high value, the controller 15 can activate the audible and visual alarm 20 to alert medical staff that an abnormality has occurred.

[0029] During gastric fluid regurgitation, medical staff use control button 16 to command controller 15 to activate the electric telescopic lever 10, adjusting the piston of syringe 6 to the left side of the second cleaning tube 8 to prevent subsequent gastric fluid entering syringe 6 from flowing out of the second cleaning tube 8. Afterwards, medical staff can program controller 15 to activate the second pump 12 every 4 hours, drawing the patient's gastric fluid back into syringe 6 through injection tube 9. Controller 15 displays the amount of regurgitated gastric fluid on display screen 17 by reading the value from second flow meter 13. When the amount of regurgitated gastric fluid reaches 150ml, controller 15 activates audible and visual alarm 20 to alert medical staff. If the amount of gastric fluid aspirated is less than 150ml, the controller 15 controls the electric telescopic rod 10 to start working in conjunction with the second liquid pump 12 to inject the aspirated gastric fluid back into the patient's stomach. Then, medical staff can, as needed, inject 20ml of warm water into the syringe 6 through the storage cylinder 4 to flush the tube and continue nasogastric feeding, or remove the storage cylinder 4 and directly connect it to the external hose connecting the second docking block 72 to inject 20ml of warm water into the syringe 6 to flush the tube and continue nasogastric feeding.

[0030] During cleaning, medical staff remove the storage cylinder 4 from the nasogastric tube 1 for cleaning. Then, using control button 16, they command the controller 15 to operate the electric telescopic rod 10, adjusting the piston of the syringe 6 to the right side of the second cleaning tube 8 to ensure the subsequent cleaning solution can smoothly enter the syringe 6. Next, using control button 16, they command the controller 15 to shut off the first pump 77 and turn on the second pump 12. Then, they inject cleaning solution into the first cleaning tube 5, which flows sequentially through the first and second cleaning tubes 8 into the syringe 6. Finally, using control button 16, they command the control box 14 to operate the electric telescopic rod 10, pushing the cleaning solution from the syringe 6 into the injection tube 9, thus completing the cleaning of the syringe 6 and injection tube 9. This cleaning process can be repeated multiple times to ensure effective cleaning of the syringe 6 and injection tube 9.

[0031] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A portable automatic nasal feeding pump, comprising a nasal feeding box (1), characterized in that: The top of the nasogastric feeding box (1) is an open structure. Inside the nasogastric feeding box (1) is a horizontally arranged mounting plate (2). The mounting plate (2) has an installation port (3). A storage cylinder (4) is inserted into the installation port (3). A first cleaning pipe (5) is also installed through the mounting plate (2). An injection cylinder (6) is located below the mounting plate (2) inside the nasogastric feeding box (1). The injection cylinder (6) and the storage cylinder (4) are connected together by a docking component (7). A second cleaning pipe (8) is also connected to the injection cylinder (6). The first cleaning pipe (5) and the second cleaning pipe (8) are docked together. An injection pipe (9) is provided on one side wall of the nasogastric feeding box (1). The discharge part of the injection cylinder (6) is connected to the injection pipe (9). An electric telescopic rod (10) is provided on the other side wall of the nasogastric feeding box (1). The telescopic part of the electric telescopic rod (10) is inserted into the nasogastric feeding box (1) and connected to the piston part of the injection cylinder (6).

2. The portable automatic nasal feeding pump according to claim 1, characterized in that: An installation ring (11) is provided on the outer wall of the storage cylinder (4). The installation ring (11) is positioned so that it cannot pass through the installation port (3). When the storage cylinder (4) is inserted into the installation port (3), the installation ring (11) is set close to the top surface of the installation plate (2).

3. A portable automatic nasal feeding pump according to claim 1, characterized in that: The docking assembly (7) includes a docking block one (71) fixedly disposed through the bottom of the storage cylinder (4) and a docking block two (72) connected to the injection cylinder (6). The bottom of the docking block one (71) is provided with a through-hole one (73). A sealing ball (74) is provided inside the docking block one (71). The sealing ball (74) cannot pass through the through-hole one (73), and the sealing ball (74) is positioned to block the through-hole one (73) under its own weight. The docking block one (71) has a through-hole two (75) on the block segment inside the storage cylinder (4). The through-hole two (75) allows the... Connecting block one (71) is connected to storage cylinder (4). Connecting block two (72) can be inserted into connecting block one (71) through through port one (73). Through port three (76) is provided on the side wall of connecting block two (72). When storage cylinder (4) is inserted into installation port (3), connecting block two (72) is inserted into connecting block one (71) through through port one (73) and pushes the sealing ball (74) upward to above through port two (75) so that through port two (75) and through port three (76) are connected, thereby connecting injection cylinder (6) and storage cylinder (4) together.

4. A portable automatic nasal feeding pump according to claim 1, characterized in that: The docking assembly (7) also includes a first liquid pump (77), one end of which is connected to the syringe (6) and the other end is connected to the docking block (72). The docking block (72) is connected to the syringe (6) through the first liquid pump (77). A first flow meter (78) is provided on the first liquid pump (77) for detecting the flow rate of the liquid in the first liquid pump (77).

5. A portable automatic nasal feeding pump according to claim 4, characterized in that: The nasogastric feeding box (1) is also equipped with a second liquid pump (12). One end of the second liquid pump (12) is connected to the injection tube (9), and the other end is connected to the discharge part of the injection cylinder (6). The discharge part of the injection cylinder (6) is connected to the injection tube (9) through the second liquid pump (12). A second flow meter (13) is provided on the second liquid pump (12) for detecting the liquid flow rate in the second liquid pump (12).

6. A portable automatic nasal feeding pump according to claim 5, characterized in that: The nasogastric feeding box (1) is also equipped with an electrical control box (14), which is equipped with a controller (15) for program control. The outer wall of the nasogastric feeding box (1) is also equipped with a control button (16) for issuing instructions and a display screen (17) for displaying data. The controller (15) is electrically connected to the electric telescopic rod (10), the first liquid pump (77), the first flow meter (78), the second liquid pump (12), the second flow meter (13), the control button (16), and the display screen (17).

7. A portable automatic nasal feeding pump according to claim 6, characterized in that: The outer wall of the syringe (6) is also provided with an electric heating element (18) for heating the outer wall of the syringe (6), and the inner wall of the syringe (6) is also provided with a temperature sensor (19) for detecting the internal temperature of the syringe (6). The electric heating element (18) and the temperature sensor (19) are both electrically connected to the controller (15).

8. A portable automatic nasal feeding pump according to claim 7, characterized in that: The outer wall of the nasogastric feeding box (1) is also equipped with an audible and visual alarm (20) for emitting an audible and visual alarm. The audible and visual alarm (20) is electrically connected to the controller (15).

9. A portable automatic nasal feeding pump according to claim 1, characterized in that: The top of the nasogastric feeding box (1) is hinged with a box cover (21), and a handle (22) is fixedly provided on the top of the box cover (21). The nasogastric feeding box (1) and the box cover (21) are also connected together by a spring lock (23).

10. A method of using a portable automatic nasal feeding pump as described in any one of claims 1 to 9, characterized in that: Includes the following steps: When performing nasogastric feeding, the medical staff connects the nasogastric tube to the injection tube (9), and then adds the required amount of nutrients to the storage cylinder (4). The added nutrients enter the injection cylinder (6) through the docking component (7). Then, the medical staff controls the electric telescopic rod (10) to work and inject the nutrients in the injection cylinder (6) into the injection tube (9). During cleaning, medical staff take the storage cylinder (4) out of the nasogastric feeding box (1) for cleaning. Then, they inject cleaning fluid into the first cleaning tube (5). The cleaning fluid passes through the first cleaning tube (5) and the second cleaning tube (8) in sequence and enters the syringe (6). Then, the medical staff controls the electric telescopic rod (10) to inject the cleaning fluid in the syringe (6) into the syringe (9).

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