Intelligent enteral nutrition infusion pump capable of monitoring residual volume of stomach

Abstract

The invention discloses an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume, and relates to the technical field of enteral nutrition infusion pumps. The stomach residue monitoring and back-flushing anti-blocking delivery pump comprises a delivery pump body, a stomach residue monitoring assembly and a back-flushing anti-blocking assembly, wherein a discharging pipe connector of the delivery pump body is communicated with a nutrition pipe. By means of the stomach residual amount monitoring assembly, the stomach residual amount of a patient can be monitored, nutrient solution injection operation continues while a large amount of content is prevented from remaining in the stomach of the patient, a control valve and a first one-way valve are closed, a switch valve is opened, and air in a monitoring measuring cylinder is exhausted through an extraction mechanism; meanwhile, residues in the stomach of the patient are reversely pumped out into the monitoring measuring cylinder through the nutrition tube, stomach contents extrude a movable plate, the movable plate downwards compresses a first spring, meanwhile, a pressure sensor detects the weight of the stomach contents, and detection data are conveyed into a conveying pump body; and the conveying amount of the nutrient solution is adjusted according to the data.

Description

Technical Field

[0001] The invention belongs to the technical field of enteral nutrition infusion pumps, and in particular relates to an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume. Background Art

[0002] The enteral nutrition infusion pump is a medical device specially designed for enteral nutrition support. It can deliver nutrient solution into the patient's body through an infusion line. It is mainly composed of a shell, a column clamp, a drive system, a control system, etc. It has functions such as automatic infusion, control of infusion speed and volume, and can issue an alarm when the infusion line is blocked or the infusion is completed.

[0003] Traditional enteral nutrition infusion pumps deliver nutrient solution to the patient's stomach through a nasogastric tube. The internal control program of the enteral nutrition infusion pump can control the delivery speed and amount of nutrient solution, and is an important auxiliary tool for improving the nutritional status of patients. However, existing enteral nutrition infusion pumps do not have the function of real-time monitoring of gastric residual volume. Some enteral nutrition infusion pumps calculate gastric residual volume based on the output of nutrient solution and the patient's digestive ability. However, during use, the patient's digestive ability is reduced due to the disease, making it impossible for medical staff to accurately know the gastric residual situation. For example, if nutrient solution is continued to be delivered when there is a large amount of residue in the patient's stomach, it will cause complications such as gastric retention in the patient, affecting the patient's health and not conducive to use.

[0004] To this end, we provide an intelligent enteral nutrition infusion pump that can monitor gastric residual volume to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent enteral nutrition infusion pump that can monitor gastric residual volume. Through the cooperation of a gastric residual volume monitoring component and a recoil anti-blocking component, the problem that the enteral nutrition infusion pump in the prior art has no gastric residual volume monitoring function and cannot accurately monitor the patient's gastric content residual volume is solved. It is easy to perform nutrient solution injection operation when there is a large amount of residual content in the patient's stomach, causing complications such as gastric retention in the patient.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention discloses an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume, comprising a delivery pump body, a gastric residual volume monitoring component and a recoil prevention component, wherein a discharge pipe interface of the delivery pump body is connected with a nutrition tube, a control valve is installed on the surface of the nutrition tube, and the gastric residual volume monitoring component comprises a monitoring measuring cylinder, the top of the monitoring measuring cylinder is connected with the nutrition tube through a catheter, an inner cavity of the monitoring measuring cylinder is provided with a movable plate, a first spring is fixedly connected to the right side of the bottom of the movable plate, a pressure sensor is fixedly connected to the right side of the bottom of the inner cavity of the monitoring measuring cylinder, a drainage pipe is connected to the left side of the bottom of the movable plate, and the bottom of the drainage pipe penetrates to the outside of the monitoring measuring cylinder, The surfaces of the conduit and the discharge pipe are both installed with switch valves, the left side of the monitoring measuring cylinder is fixedly connected with an extraction mechanism, the top of the extraction mechanism is communicated with the monitoring measuring cylinder, the recoil anti-blocking assembly includes a recoil tank, the left side of the recoil tank is fixedly connected with a rotating motor, the right side of the output end of the rotating motor penetrates the recoil tank and is fixedly connected with a cam, a piston is provided at the bottom of the cam, a second spring is fixedly connected to the bottom of the piston, the bottom of the recoil tank is communicated with the nutrition tube through a delivery tube, the right side of the recoil tank is connected with a liquid storage bottle, the bottom of the liquid storage bottle is communicated with the recoil tank through a water supply pipe, and the surfaces of the water supply pipe and the delivery pipe are both installed with a first one-way valve.

[0008] The present invention is further configured as follows: the extraction mechanism includes an air chamber, the right side of the air chamber is fixedly connected to the monitoring measuring cylinder, the bottom of the air chamber is fixedly connected to a servo motor, the top of the output end of the servo motor passes through the air chamber and is fixedly connected to a screw, the surface of the screw is threadedly connected to a push rod, the top of the push rod is fixedly connected to a rubber plate, the right side of the top of the air chamber is connected to the monitoring measuring cylinder through an exhaust pipe, the left side of the top of the air chamber is connected to an exhaust pipe, the surfaces of the exhaust pipe and the exhaust pipe are both equipped with a second one-way valve, the servo motor can cooperate with the screw to control the use height of the push rod and the rubber plate, the rubber plate can cooperate with the air chamber to extract the air inside the monitoring measuring cylinder to form a negative pressure state inside it, and the exhaust pipe and the air extraction pipe can cooperate with the second one-way valve to discharge the air inside the monitoring measuring cylinder to the outside.

[0009] The present invention is further configured such that the bottoms of both sides of the inner cavity of the air chamber are fixedly connected with sliding rails, the inner cavity of the sliding rails is slidably connected with sliders, the opposite sides of the two sliders are fixedly connected to the push rod, the inner wall of the push rod is provided with threads used in conjunction with the screw rod, the sliding rails and the sliders can limit the push rod to prevent it from rotating during the up and down movement, and the threads can facilitate the screw rod to drive the push rod to move.

[0010] The present invention is further configured such that the right side of the cam is movably connected to the inner wall of the recoil tank via a bearing, a positioning sleeve is fixedly connected to the surface of the water delivery pipe, the bottom of the positioning sleeve is fixedly connected to the recoil tank, and the top of the water delivery pipe is connected to the liquid storage bottle via a thread. The bearing can increase the stability of the cam during rotation, and the positioning sleeve can position and fix the water delivery pipe and the liquid storage bottle.

[0011] The present invention is further configured such that the bottom of the second spring is fixedly connected to the inner wall of the recoil tank, the surface of the piston is interference fit with the inner wall of the recoil tank, the second spring can reset the piston when it is not squeezed by the cam, so that it can continue to transport the flushing liquid, and the piston that is interference fit with the recoil tank can increase the air tightness of the piston during movement.

[0012] The present invention is further configured such that a heating shell is fixedly connected to the surface of the nutrition tube, the top of the heating shell is connected to an exhaust fan, the top of the exhaust fan is connected to the bottom of the heating shell, and a heating pipe is fixedly connected between the two sides of the inner cavity of the heating shell. The exhaust fan can circulate the hot air inside the heating shell so that the hot air can continuously flow on the surface of the nutrition tube to heat the nutrient solution transported therein, and the heating pipe can heat the air.

[0013] The present invention is further configured such that a heat-conducting ring is provided at the bottom of the inner cavity of the heating shell, the inner wall of the heat-conducting ring is in contact with the surface of the nutrition tube, and the surface of the heat-conducting ring is fixedly connected with heat-conducting fins. The heat-conducting ring and the heat-conducting fins can increase the contact area between the nutrition tube and the hot air, thereby accelerating the heating speed of the nutrient solution inside the nutrition tube.

[0014] The present invention is further configured such that a detection tube is sleeved on the right side of the surface of the nutrition tube, and temperature sensors are fixedly connected to the top and bottom of the inner cavity of the detection tube. The detection ends of the two temperature sensors on opposite sides are both in contact with the surface of the nutrition tube. The detection tube can facilitate the installation and fixation of the temperature sensor. The temperature sensor can monitor the temperature of the nutrient solution inside the nutrition tube to prevent the temperature of the nutrient solution from dropping before entering the patient's body, causing discomfort to the patient.

[0015] The present invention is further configured such that a flow monitoring sensor is installed on the surface of the discharge pipe of the delivery pump body, and a handle is fixedly connected to the top of the delivery pump body. The flow monitoring sensor can monitor the amount of nutrient solution delivered by the feeding tube, and the handle can facilitate medical staff to lift the delivery pump body.

[0016] The present invention has the following beneficial effects.

[0017] 1. The present invention can monitor the patient's gastric residual volume through a gastric residual volume monitoring component to prevent the patient from continuing to inject nutrient solution while a large amount of content remains in the stomach. The control valve and the first one-way valve are closed and the switch valve is opened. The air inside the monitoring cylinder is discharged by the extraction mechanism. At the same time, the nutrient tube reversely extracts the patient's stomach residue into the monitoring cylinder. The stomach content presses the movable plate, causing the movable plate to compress the first spring downward. At the same time, the pressure sensor detects the weight of the stomach content, and the detection data is transmitted to the delivery pump body. The delivery amount of the nutrient solution is adjusted according to the data to avoid complications such as gastric retention in the patient.

[0018] 2. The present invention can recoil and clear the nutrition tube through the recoil anti-blocking component. Since the patient's stomach contents contain secretions such as gastric acid, the nutrition tube is easily blocked during extraction. The rotating motor and the cam are used to continuously squeeze the piston. The piston discharges the flushing liquid in the liquid storage bottle into the nutrition tube during the movement. The nutrition tube is flushed with the continuously discharged flushing liquid to flush out the blockage, thereby preventing the nutrition tube from being blocked and unable to work normally.

[0019] 3. The present invention can heat the nutrient solution transported in the nutrient tube through the heating mechanism, and use the temperature sensor inside the detection tube to detect the temperature of the nutrient tube part located outside the patient's body. Since the nutrient tube is relatively thin, the nutrient solution heated at the upper end of the nutrient tube will gradually cool down during the transportation process, and the temperature is lower when it is transported to the patient's body. The temperature of the nutrient solution is detected at the end of the nutrient tube by the temperature sensor. When it is detected that the temperature of the nutrient solution does not meet the standard, the heating tube is controlled to increase the heat until the temperature of the nutrient solution reaches the specified standard when it is transported to the end of the nutrient tube, thereby avoiding discomfort to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0021] Figure 1 A three-dimensional diagram of an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume;

[0022] Figure 2 A side view of an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume;

[0023] Figure 3 A cross-sectional view of a monitoring cylinder in an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume;

[0024] Figure 4 A cross-sectional view of the air chamber in an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume;

[0025] Figure 5A cross-sectional view of a recoil tank in an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume;

[0026] Figure 6 A cross-sectional view of a heating shell in an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume;

[0027] Figure 7 The present invention is a cross-sectional view of a detection tube in an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume.

[0028] In the attached drawings: 1. delivery pump body; 2. nutrition tube; 3. control valve; 4. gastric residual volume monitoring component; 41. monitoring measuring cylinder; 42. catheter; 43. movable plate; 44. first spring; 45. pressure sensor; 46. drainage pipe; 47. switch valve; 48. extraction mechanism; 5. recoil anti-blocking component; 51. recoil tank; 52. rotating motor; 53. cam; 54. piston; 55. second spring; 56. liquid storage bottle; 57. First one-way valve; 58. Water supply pipe; 59. Delivery pipe; 481. Air chamber; 482. Servo motor; 483. Screw; 484. Push rod; 485. Rubber sheet; 486. Air suction pipe; 487. Exhaust pipe; 488. Second one-way valve; 6. Heating mechanism; 61. Heating shell; 62. Exhaust fan; 63. Heating pipe; 64. Heat transfer ring; 65. Detection tube; 66. Temperature sensor; 7. Flow monitoring sensor. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Embodiment 1

[0031] See also Figure 1-7The present invention is an intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume, comprising a delivery pump body 1, a gastric residual volume monitoring component 4 and a recoil prevention component 5. The discharge pipe interface of the delivery pump body 1 is connected with a nutrition tube 2, and a control valve 3 is installed on the surface of the nutrition tube 2. The gastric residual volume monitoring component 4 comprises a monitoring measuring cylinder 41, and the top of the monitoring measuring cylinder 41 is connected with the nutrition tube 2 through a catheter 42. The inner cavity of the monitoring measuring cylinder 41 is provided with a movable plate 43, and a first spring 44 is fixedly connected to the right side of the bottom of the movable plate 43. A pressure sensor 45 is fixedly connected to the right side of the bottom of the inner cavity of the monitoring measuring cylinder 41. The left side of the bottom of the movable plate 43 is connected with a drainage pipe 46, and the bottom of the drainage pipe 46 passes through the outside of the monitoring measuring cylinder 41. The catheter 42 and the drainage pipe 46 extend to the outside of the monitoring measuring cylinder 41. A switch valve 47 is installed on the surface of the tube 46, an extraction mechanism 48 is fixedly connected to the left side of the monitoring cylinder 41, and the top of the extraction mechanism 48 is connected to the monitoring cylinder 41. The recoil anti-blocking component 5 includes a recoil tank 51, a rotating motor 52 is fixedly connected to the left side of the recoil tank 51, and a cam 53 is fixedly connected to the right side of the output end of the rotating motor 52 through the recoil tank 51, and a piston 54 is provided at the bottom of the cam 53, and a second spring 55 is fixedly connected to the bottom of the piston 54. The bottom of the recoil tank 51 is connected to the nutrition tube 2 through a delivery pipe 59, and a liquid storage bottle 56 is connected to the right side of the recoil tank 51. The bottom of the liquid storage bottle 56 is connected to the recoil tank 51 through a water supply pipe 58, and the surfaces of the water supply pipe 58 and the delivery pipe 59 are both installed with a first one-way valve 57.

[0032] Specifically: the nutrition tube 2 can transport the nutrient solution, the control valve 3 can control the switch of the nutrition tube 2, the monitoring cylinder 41 can monitor the residual volume in the patient's stomach, the catheter 42 can transport the stomach contents in the nutrition tube 2 to the inside of the monitoring cylinder 41, the movable plate 43 and the first spring 44 can transmit the pressure of the stomach contents to the pressure sensor 45, the pressure sensor 45 can detect the weight of the stomach contents, the rotating motor 52 can control the rotation of the cam 53, the cam 53 can squeeze the piston 54, the piston 54 can cooperate with the second spring 55 to move up and down, and the flushing liquid in the liquid storage bottle 56 is transported to the nutrition tube 2, so as to flush the inside of the nutrition tube 2 and prevent it from being blocked.

[0033] Embodiment 2

[0034] See also Figure 1 , Figure 2 , Figure 3 and Figure 4On the basis of the first embodiment, the extraction mechanism 48 includes an air chamber 481, the right side of the air chamber 481 is fixedly connected to the monitoring measuring cylinder 41, the bottom of the air chamber 481 is fixedly connected to a servo motor 482, the top of the output end of the servo motor 482 passes through the air chamber 481 and is fixedly connected to a screw 483, the surface of the screw 483 is threadedly connected to a push rod 484, the top of the push rod 484 is fixedly connected to a rubber plate 485, the right side of the top of the air chamber 481 is connected to the monitoring measuring cylinder 41 through an exhaust pipe 486, and the air chamber The left side of the top of 481 is connected to an exhaust pipe 487, and the surfaces of the exhaust pipe 486 and the exhaust pipe 487 are installed with a second one-way valve 488, the bottoms of both sides of the inner cavity of the air chamber 481 are fixedly connected with slide rails, and the inner cavity of the slide rails is slidably connected with sliders, and the opposite sides of the two sliders are fixedly connected to the push rod 484, and the inner wall of the push rod 484 is provided with a thread used in conjunction with the screw 483, a flow monitoring sensor 7 is installed on the surface of the discharge pipe of the conveying pump body 1, and a handle is fixedly connected to the top of the conveying pump body 1.

[0035] Specifically: the servo motor 482 can cooperate with the screw 483 to control the use height of the push rod 484 and the rubber plate 485, the rubber plate 485 can cooperate with the air chamber 481 to extract the air inside the monitoring cylinder 41 to form a negative pressure state inside it, the exhaust pipe 487 and the suction pipe 486 can cooperate with the second one-way valve 488 to discharge the air inside the monitoring cylinder 41 to the outside, the slide rail and the slider can limit the push rod 484 to prevent it from rotating during the up and down movement, the thread can facilitate the screw 483 to drive the push rod 484 to move, the flow monitoring sensor 7 can monitor the amount of nutrient solution delivered by the nutrition tube 2, and the handle can facilitate medical staff to lift the delivery pump body 1.

[0036] Embodiment 3

[0037] See also Figure 1 , Figure 2 and Figure 7 On the basis of the first embodiment, the right side of the cam 53 is movably connected to the inner wall of the recoil tank 51 through a bearing, a positioning sleeve is fixedly connected to the surface of the water delivery pipe 58, the bottom of the positioning sleeve is fixedly connected to the recoil tank 51, the top of the water delivery pipe 58 is connected to the liquid storage bottle 56 through a thread, the bottom of the second spring 55 is fixedly connected to the inner wall of the recoil tank 51, and the surface of the piston 54 is interference fit with the inner wall of the recoil tank 51.

[0038] Specifically: the bearing can increase the stability of the cam 53 during rotation, the positioning sleeve can position and fix the water delivery pipe 58 and the liquid storage bottle 56, the second spring 55 can reset the piston 54 when it is not squeezed by the cam 53, so that it can continue to transport the flushing liquid, and the piston 54 that is interference fit with the recoil tank 51 can increase the airtightness of the piston 54 during movement.

[0039] Embodiment 4

[0040] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 On the basis of the first embodiment, a heating mechanism 6 is fixedly connected to the surface of the nutrition tube 2, and the heating mechanism 6 includes a heating shell 61. The top of the heating shell 61 is connected to an exhaust fan 62, and the top of the exhaust fan 62 is connected to the bottom of the heating shell 61. A heating tube 63 is fixedly connected between the two sides of the inner cavity of the heating shell 61. A heat-conducting ring 64 is provided at the bottom of the inner cavity of the heating shell 61. The inner wall of the heat-conducting ring 64 is in contact with the surface of the nutrition tube 2. A heat-conducting fin is fixedly connected to the surface of the heat-conducting ring 64. A detection tube 65 is sleeved on the right side of the surface of the nutrition tube 2. The top and bottom of the inner cavity of the detection tube 65 are fixedly connected with temperature sensors 66, and the detection ends of the two temperature sensors 66 on the opposite sides are in contact with the surface of the nutrition tube 2.

[0041] Specifically: the exhaust fan 62 can circulate the hot air inside the heating shell 61, so that the hot air can continuously flow on the surface of the nutrition tube 2 to heat the nutrient solution transported therein; the heating tube 63 can heat the air; the heat-conducting ring 64 and the heat-conducting fins can increase the contact area between the nutrition tube 2 and the hot air, thereby accelerating the heating speed of the nutrient solution inside the nutrition tube 2; the detection tube 65 can facilitate the installation and fixation of the temperature sensor 66; the temperature sensor 66 can monitor the temperature of the nutrient solution inside the nutrition tube 2 to prevent the temperature of the nutrient solution from dropping before entering the patient's body, thereby causing discomfort to the patient.

[0042] The working principle of the present invention is as follows: the delivery pump body 1 cooperates with the nutrition tube 2 to deliver the nutrient solution to the patient's body, and the flow monitoring sensor 7 is used to monitor and record the delivery amount of the nutrient solution. When it is necessary to monitor the residual gastric volume of the patient, the control valve 3 and the first one-way valve 57 are closed, and after the switch valve 47 is opened, the servo motor 482 controls the rotation of the screw 483, and the rotation of the screw 483 cooperates with the push rod 484 to control the rubber plate 485 to move up and down continuously. The rubber plate 485 cooperates with the air chamber 481 to extract the air inside the monitoring measuring cylinder 41. At the same time, the nutrition tube 2 extracts the contents of the patient's stomach into the monitoring measuring cylinder 41, and the weight of the stomach contents is transmitted to the pressure sensor 45 through the cooperation of the movable plate 43 and the first spring 44. The pressure sensor 45 measures the weight of the stomach contents, and the measured data is sent to the inside of the delivery pump body 1. The delivery amount of the nutrient solution is corrected through the delivery pump body 1 to prevent the residual gastric volume of the patient. When the amount is large, the nutrient solution is continued to be delivered, which may cause complications such as gastric retention in the patient. The extracted gastric contents are discharged through the drainage tube 46 and then delivered back to the patient's stomach. After the residual amount of gastric residue is detected, the switch valve 47 is closed and the first one-way valve 57 is opened. The cam 53 is controlled to rotate by the rotating motor 52. The cam 53 cooperates with the second spring 55 to control the piston 54 to move up and down continuously, so that the flushing liquid in the liquid storage bottle 56 is continuously injected into the nutrition tube 2. By continuously injecting flushing liquid into the nutrition tube 2, the blockage caused by the back extraction of the patient's gastric contents is flushed away, so that the nutrition tube 2 can continue to carry out the delivery work. During the delivery of the nutrient solution, the temperature of the nutrient solution is detected by the temperature sensor 66 located at the end of the nutrition tube 2. After detecting that the temperature of the nutrient solution does not meet the standard, the delivery pump body 1 controls the heating tube 63 to increase the heat until the temperature reaches the specified standard when the nutrient solution is delivered to the end of the nutrition tube 2, so as to avoid discomfort to the patient.

[0043] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. An intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume, comprising a delivery pump body (1), a gastric residual volume monitoring component (4) and a backwash anti-blocking component (5), characterized in that: The discharge pipe interface of the delivery pump body (1) is connected to a nutrition pipe (2), and a control valve (3) is installed on the surface of the nutrition pipe (2); The gastric residual volume monitoring assembly (4) comprises a monitoring measuring cylinder (41), the top of the monitoring measuring cylinder (41) is connected to the nutrition tube (2) via a catheter (42), the inner cavity of the monitoring measuring cylinder (41) is provided with a movable plate (43), the right side of the bottom of the movable plate (43) is fixedly connected to a first spring (44), the right side of the bottom of the inner cavity of the monitoring measuring cylinder (41) is fixedly connected to a pressure sensor (45), the left side of the bottom of the movable plate (43) is connected to a drainage pipe (46), the bottom of the drainage pipe (46) extends to the outside of the monitoring measuring cylinder (41), the surfaces of the catheter (42) and the drainage pipe (46) are both installed with switch valves (47), the left side of the monitoring measuring cylinder (41) is fixedly connected to an extraction mechanism (48), the top of the extraction mechanism (48) is connected to the monitoring measuring cylinder (41); The recoil anti-blocking assembly (5) comprises a recoil tank (51), the left side of the recoil tank (51) is fixedly connected to a rotating motor (52), the right side of the output end of the rotating motor (52) penetrates the recoil tank (51) and is fixedly connected to a cam (53), a piston (54) is arranged at the bottom of the cam (53), a second spring (55) is fixedly connected to the bottom of the piston (54), the bottom of the recoil tank (51) is connected to the nutrition tube (2) through a delivery tube (59), the right side of the recoil tank (51) is connected to a liquid storage bottle (56), the bottom of the liquid storage bottle (56) is connected to the recoil tank (51) through a water delivery pipe (58), and the surfaces of the water delivery pipe (58) and the delivery pipe (59) are both installed with a first one-way valve (57).

2. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 1, characterized in that: The extraction mechanism (48) comprises an air chamber (481), the right side of the air chamber (481) is fixedly connected to the monitoring measuring cylinder (41), the bottom of the air chamber (481) is fixedly connected to a servo motor (482), the top of the output end of the servo motor (482) passes through the air chamber (481) and is fixedly connected to a screw (483), the surface of the screw (483) is threadedly connected to a push rod (484), the top of the push rod (484) is fixedly connected to a rubber plate (485), the right side of the top of the air chamber (481) is connected to the monitoring measuring cylinder (41) through an exhaust pipe (486), the left side of the top of the air chamber (481) is connected to an exhaust pipe (487), and the surfaces of the exhaust pipe (486) and the exhaust pipe (487) are both installed with a second one-way valve (488).

3. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 2, characterized in that: The bottoms of both sides of the inner cavity of the air chamber (481) are fixedly connected with slide rails, and the inner cavity of the slide rails is slidably connected with sliders. The opposite sides of the two sliders are fixedly connected with push rods (484), and the inner wall of the push rod (484) is provided with threads for use with the screw rod (483).

4. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 1, characterized in that: The right side of the cam (53) is movably connected to the inner wall of the recoil tank (51) via a bearing, a positioning sleeve is fixedly connected to the surface of the water delivery pipe (58), the bottom of the positioning sleeve is fixedly connected to the recoil tank (51), and the top of the water delivery pipe (58) is connected to the liquid storage bottle (56) via a thread.

5. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 1, characterized in that: The bottom of the second spring (55) is fixedly connected to the inner wall of the recoil tank (51), and the surface of the piston (54) is interference fit with the inner wall of the recoil tank (51).

6. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 1, characterized in that: A heating mechanism (6) is fixedly connected to the surface of the nutrition tube (2), and the heating mechanism (6) comprises a heating shell (61). The top of the heating shell (61) is connected to an exhaust fan (62), and the top of the exhaust fan (62) is connected to the bottom of the heating shell (61). A heating pipe (63) is fixedly connected between two sides of the inner cavity of the heating shell (61).

7. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 6, characterized in that: A heat-conducting ring (64) is provided at the bottom of the inner cavity of the heating shell (61), the inner wall of the heat-conducting ring (64) is in contact with the surface of the nutrition tube (2), and heat-conducting fins are fixedly connected to the surface of the heat-conducting ring (64).

8. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 1, characterized in that: A detection tube (65) is sleeved on the right side of the surface of the nutrition tube (2), and the top and bottom of the inner cavity of the detection tube (65) are fixedly connected to temperature sensors (66), and the detection ends of the two temperature sensors (66) on opposite sides are both in contact with the surface of the nutrition tube (2).

9. The intelligent enteral nutrition infusion pump capable of monitoring gastric residual volume according to claim 1, characterized in that: A flow monitoring sensor (7) is installed on the surface of the discharge pipe of the delivery pump body (1), and a handle is fixedly connected to the top of the delivery pump body (1).

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