Nasal feeding tube with safe tube drawing function for detecting residual stomach volume

Abstract

The invention relates to the technical field of nasogastric feeding tubes, and discloses a nasogastric feeding tube with a safe tube drawing function for stomach residual volume detection, the nasogastric feeding tube comprises a nasogastric feeding tube body, and a foldable film is arranged on the outer side of the nasogastric feeding tube body; the stomach residual volume is monitored in real time, the gastrointestinal function is accurately evaluated, complications are prevented, the nutrition supporting effect is improved, the nasal feeding tube body is separated from the lantern ring through the traction assembly, the outer wall of the nasal feeding tube body is covered with the film, and gastric acid adhering to the outer wall of the nasal feeding tube body is prevented from entering the esophagus, the pharynx and the nasal cavity of a human body in the tube drawing process, so that the gastric acid is prevented from entering the nasal feeding tube body. Through cooperation of the driving assembly, friction between the lantern ring and the nasal feeding tube body is reduced, the movement distance of the lantern ring generated along with tube drawing of the nasal feeding tube body is reduced, and the paraffin oil can clean gastric acid located on the outer wall of the nasal feeding tube body, so that the gastric acid on the outer wall of the nasal feeding tube body is cleaned. Gastric acid is prevented from dripping onto the esophagus, the pharynx and the nasal cavity along the end, close to the food outlet, of the nasal feeding tube body, and damage to the human body is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of nasogastric feeding tubes, in particular to a nasogastric feeding tube for detecting gastric residual volume with a safe tube removal function. Background Art

[0002] The nasogastric feeding tube is mainly inserted into the stomach through the nasal cavity, and liquid food, water and medicine are infused from the tube to maintain the patient's nutritional needs and drug treatment needs. This method is often used for patients in coma, after oral surgery, with severe oral diseases and difficulty opening the mouth (such as tetanus patients), patients with swallowing dysfunction, as well as patients who refuse to eat, premature and critically ill infants.

[0003] By monitoring gastric residual volume, the patient's tolerance to enteral nutrition can be assessed; this is crucial for developing and adjusting the enteral nutrition regimen to ensure that the patient is receiving adequate nutritional support.

[0004] At the same time, in the prior art, when the nasogastric feeding tube is inserted into the patient's stomach for intragastric feeding, gastric acid sticks to the outer wall of one end of the nasogastric feeding tube inserted into the stomach. When the patient's swallowing function is removed, the nasogastric feeding tube with gastric acid sticks gastric acid into the esophagus, pharynx and nasal cavity when passing through the esophagus, pharynx and nasal cavity, causing harm to the human body.

[0005] Therefore, it is necessary to provide a nasogastric residual volume detection nasogastric feeding tube with a safe tube removal function to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a nasogastric residual volume detection nasogastric tube with a safe tube removal function, so as to solve the defects of the prior art mentioned in the above background technology. When the patient's swallowing function is removed, the nasogastric tube with gastric acid sticking to it will stick gastric acid into the esophagus, pharynx and nasal cavity when passing through the esophagus, pharynx and nasal cavity, causing human body harm.

[0007] Based on the above ideas, the present invention provides the following technical solutions: comprising a nasofeeding tube body, a foldable film is arranged on the outside of the nasofeeding tube body, one end of the film is bonded to the outer wall of the nasofeeding tube body, and when one end of the nasofeeding tube body extends into the stomach, the film is located in the esophagus; a ring is bonded to the other end of the film, the ring and the nasofeeding tube body are fixed by a fixed block, and the fixed block is pulled by a traction component to slide in the ring and the nasofeeding tube body; a cavity is opened in the nasofeeding tube body, the traction component is located in the cavity, the traction component comprises a traction rope, one end of the traction rope extends to the outside of the feeding end of the nasofeeding tube body, and the other end of the traction rope is fixed to the fixed block through a pulley; a fixing component is arranged on a side of the fixing block close to the traction component, the fixing component comprises a spring piece and a limit block, the spring piece is clamped with the limit block, the spring piece is installed on one side of the fixing block, and the limit block is installed in the cavity of the nasofeeding tube body.

[0008] As a further solution of the present invention: the interior of the ring is hollow, a storage bag is installed in the ring, the side of the storage bag close to the nasogastric tube body is wavy, and the storage bag is made of polycarbonate material; a plurality of rotatable spike portions installed on an annular plate are arranged inside the storage bag, the plurality of spike portions are distributed in an annular manner, and each of the spike portions is located in a wavy recessed position; a through hole is opened on the side of the ring close to the nasogastric tube body.

[0009] As a further solution of the present invention: the cross-sectional shape of the storage bag is a non-closed circular ring, and driving components are arranged in both ends of the storage bag; the annular plate penetrates the storage bag and slides sealingly therewith.

[0010] As a further solution of the present invention: the driving component is arranged on one side of the spike portion, and through the cooperation of the traction component and the driving component, the spike portion is driven to rotate and puncture the storage bag, so that the paraffin oil in the storage bag is discharged through the through hole to the outer wall of the nasogastric tube body.

[0011] As a further solution of the present invention: the driving assembly includes a rack, which is fixedly mounted on a ring plate, one side of the rack is meshingly connected with a gear, a threaded rod is fixedly connected inside the gear, the threaded rod is rotatably connected to the inner wall of the ring, an eccentric rod is fixedly connected to the outer side of the threaded rod, one end of the eccentric rod away from the threaded rod is rotatably connected to a rotating shaft, one end of the rotating shaft is arranged in a slide groove and slidably cooperates with it, and the slide groove is opened at the top of the fixed block.

[0012] As a further solution of the present invention: a support plate is provided on the outside of the storage bag, a lifting assembly is provided on the top of the support plate, the lifting assembly includes a connecting rod, the connecting rod is fixedly connected to the top of the support plate, and the connecting rod is threadedly connected to the outside of the threaded rod; a limiting rod is fixedly installed on the inner wall of the ring, and the connecting rod is slidably connected to the outside of the limiting rod; an extrusion assembly is provided on the outside of the support plate.

[0013] As a further solution of the present invention: the extrusion assembly includes a plurality of second protrusions, the plurality of second protrusions are distributed on the outside of the support plate in a spiral line, and one end of the second protrusion is set as a curved surface;

[0014] A plurality of grooves are provided on a side of the ring away from the nasogastric tube body, a first protrusion is slidably fitted in the groove, a plurality of the first protrusions are distributed on the inner wall of the ring in a spiral line, and a side of the first protrusion close to the support plate is set as an arc surface.

[0015] As a further solution of the present invention: it also includes a micro image sensor, which is arranged at one end of the nasofeeding tube body close to the discharge port, the top of the micro image sensor is provided with an external thread, and the end of the nasofeeding tube body close to the micro image sensor is provided with an internal thread, and the micro image sensor is threadedly connected to the nasofeeding tube body.

[0016] Compared with the prior art, the beneficial effect of the present invention is that the nasogastric tube body and the ring are separated by a traction component, so that the film covers the outer wall of the nasogastric tube body, preventing the gastric acid adhering to the outer wall of the nasogastric tube body from passing through the esophagus, pharynx and nasal cavity of the human body during the tube removal process, causing harm to the human body. Through the cooperation of the driving component, the friction between the ring and the nasogastric tube body is reduced, and the movement distance of the ring accompanying the tube removal of the nasogastric tube body is reduced. In addition, paraffin oil can clean the gastric acid on the outer wall of the nasogastric tube body, preventing the gastric acid from dripping along the end of the nasogastric tube body close to the feeding port to the esophagus, pharynx and nasal cavity, further reducing the damage to the human body.

[0017] Compared with the prior art, the beneficial effect of the present invention is that, through the setting of the lifting component and the extrusion component, combined with the cooperation of the traction component, multiple first protrusions distributed in a spiral shape are extended at the same time, increasing the friction between the ring and the esophagus. Combined with the use of paraffin oil, the friction between the ring and the nasogastric tube body is reduced, and the movement distance of the ring accompanying the removal of the nasogastric tube body is further reduced, so that the film covers the outer wall of the nasogastric tube body.

[0018] Compared with the prior art, the beneficial effect of the present invention is that, by real-time monitoring of gastric residual volume, the patient's gastrointestinal function status, including gastric emptying capacity and digestion and absorption function, can be accurately evaluated, which is of great significance for guiding the type and quantity of diet and adjusting the enteral nutrition infusion plan, and helps to avoid problems such as indigestion and vomiting caused by gastrointestinal dysfunction; for critically ill patients and comatose patients, real-time monitoring of gastric residual volume can detect gastric emptying disorders at an early stage and take timely intervention measures, such as adjusting the nutritional support plan, increasing gastrointestinal motility drugs, etc., thereby effectively reducing the occurrence of complications such as aspiration, aspiration pneumonia, and abdominal distension; enteral nutrition is an important part of the treatment of critically ill patients. By real-time monitoring of gastric residual volume, the safety and effectiveness of enteral nutrition infusion can be ensured, and nutrient waste and adverse reactions caused by excessive gastric residual volume can be avoided, thereby improving the nutritional support effect and promoting patient recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a main structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the film structure of the present invention;

[0022] Figure 3 The present invention Figure 2 A magnified view of the structure of part A;

[0023] Figure 4 It is a schematic diagram of the traction rope structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the fixed block of the present invention;

[0025] Figure 6 It is a schematic diagram of the storage bag structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the spike portion of the present invention;

[0027] Figure 8 Schematic diagram of the rack structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the support plate structure of the present invention.

[0029] In the figure: 1. nasogastric tube body; 2. film; 3. collar; 4. fixing block; 5. traction rope; 501. pulley; 6. spring piece; 601. limit block; 7. cavity; 8. through hole; 9. storage bag; 10. spike portion; 11. rack; 1101. gear; 1102. threaded rod; 1103. eccentric rod; 1104. slide groove; 12. connecting rod; 1201. support plate; 1202. limit rod; 13. first protrusion; 14. second protrusion; 15. micro image sensor. DETAILED DESCRIPTION

[0030] like Figure 1 to Figure 2 As shown, a nasogastric residual volume detection nasogastric feeding tube with a safe tube removal function includes a nasogastric feeding tube body 1 and a micro-image sensor 15. The micro-image sensor 15 is arranged at one end of the nasogastric feeding tube body 1 close to the discharge port. The top of the micro-image sensor 15 is provided with an external thread, and the end of the nasogastric feeding tube body 1 close to the micro-image sensor 15 is provided with an internal thread. The micro-image sensor 15 is threadedly connected to the nasogastric feeding tube body 1.

[0031] In this embodiment, the patient is brought to the bedside of the patient, and the patient's bed number, name, wristband and other information are first checked. According to the patient's specific situation, a suitable body position is selected, such as a semi-recumbent position, a sitting position or a right-lying position for awake patients, and a supine position without a pillow for comatose patients. Observe whether the nasal cavity is unobstructed, select a side of the unobstructed nasal cavity, clean the nasal cavity with a cotton swab, measure the length of the nasogastric tube body 1 to be inserted, which is usually 45-55cm for adults and 14-18cm for infants and young children, and mark it on the nasogastric tube body 1. Then, a small amount of liquid paraffin oil is taken to lubricate the nasogastric tube body 1, hold the gastric tube with gauze in one hand, and hold the front end of the nasogastric tube body 1 with tweezers in the other hand, and gently insert it along the selected nostril. Common confirmation methods include placing the open end of the gastric tube in water to observe whether there is gas escaping, aspirating gastric juice with a syringe, or listening to the sound of air passing through water in the stomach with a stethoscope; after confirming that the gastric tube is in the stomach, After infusing food, a small amount of warm water should be added to prevent the nasogastric tube body 1 from being blocked. During the entire operation, the following points should be noted: the insertion action should be gentle to prevent damage to the esophageal mucosa; after the nasogastric tube body 1 is completely inserted into the stomach, the micro-image sensor 15 is placed in the stomach to detect the residual volume in the stomach. After the micro-image sensor 15 is connected to the peripheral equipment, the light emitted by the light source equipped in the television information center is used to guide the light into the subject's body cavity through the optical fiber in the micro-image sensor 15. The micro-image sensor 15 equipped at the front end of the nasogastric tube body 1 receives the light reflected from the mucosal surface in the body cavity and converts the light into electrical signals. In the television information center, the electrical signals are stored and processed, and finally transmitted to the television monitor. In this way, the doctor can see the color mucosal image of the examined organ on the screen to make a diagnosis.

[0032] Coating a layer of anti-corrosion coating, such as a nano coating or a fluorosilane film layer, on the surface of the micro image sensor 15 can significantly improve its acid resistance and corrosion resistance. The nano coating has the characteristics of ultra-thin, transparent, hydrophilic and oleophobic, and can tightly cover the surface of the sensor to prevent the adhesion of water droplets and grease, thereby achieving a waterproof and moisture-proof effect. The fluorosilane film layer has a certain ability to resist strong acid and alkali erosion, and can protect the micro image sensor 15 from erosion by gastric acid.

[0033] like Figures 1 to 4 As shown, a foldable film 2 is provided on the outside of the nasofeeding tube body 1, and one end of the film 2 is bonded to the outer wall of the nasofeeding tube body 1; a ring 3 is bonded to the other end of the film 2, and the ring 3 and the nasofeeding tube body 1 are fixed by a fixing block 4, and the fixing block 4 is pulled by a traction component to slide in the ring 3 and the nasofeeding tube body 1; a cavity 7 is opened in the nasofeeding tube body 1, and the traction component is located in the cavity 7, and the traction component includes a traction rope 5, one end of the traction rope 5 extends to the outside of the feeding end of the nasofeeding tube body 1, and the other end of the traction rope 5 is fixed to the fixing block 4 through a pulley 501; a fixing component is provided on a side of the fixing block 4 close to the traction component, and the fixing component includes a spring piece 6 and a limit block 601, and the spring piece 6 is clamped with the limit block 601, and the spring piece 6 is installed on one side of the fixing block 4, and the limit block 601 is installed in the cavity 7 of the nasofeeding tube body 1.

[0034] In this embodiment, when one end of the nasogastric tube body 1 is extended into the stomach, the film 2 is located in the esophagus, and the patient recovers the swallowing function, the nasogastric tube body 1 needs to be removed in time. Before removing the tube, the traction rope 5 close to the feeding end of the nasogastric tube body 1 needs to be manually pulled. The traction rope 5 passes through the pulley 501 to pull the fixing block 4 to move away from the ring 3, so that the nasogastric tube body 1 is separated from the ring 3. At the same time, the spring piece 6 arranged on one side of the fixing block 4 moves with the fixing block 4, and the limiting block 601 is provided with a slot adapted to the spring piece 6, until the spring piece 6 is engaged in the slot, which means that the fixing block 4 is connected to the limiting block 601.

[0035] While the fixing block 4 is connected to the limiting block 601, the medical staff removes the tube. While the nasogastric tube body 1 moves toward the outside of the nasal cavity, since the film 2 is of foldable design, the ring 3 separated from the nasogastric tube body 1 at this time is subjected to the friction force of the inner wall of the esophagus, making the removal speed of the ring 3 and the nasogastric tube body 1 inconsistent until the film 2 covers the outside of the nasogastric tube body 1, preventing the nasogastric tube body 1 from being placed in the stomach and being contaminated with gastric acid, which adheres to the esophagus, pharynx, and nasal cavity during the removal process and causes damage to the human body.

[0036] like Figures 5 to 8As shown, the interior of the ring 3 is hollow, and a storage bag 9 is installed in the ring 3. The side of the storage bag 9 close to the nasogastric tube body 1 is wavy; a plurality of rotatable spike portions 10 installed on an annular plate are arranged inside the storage bag 9, and the plurality of spike portions 10 are distributed in an annular manner, and each spike portion 10 is located in a wavy recessed position; a through hole 8 is opened on the side of the ring 3 close to the nasogastric tube body 1.

[0037] In this embodiment, the annular plate can be driven to rotate by a micro motor, and the rotation of the annular plate drives multiple annularly distributed spikes 10 to rotate, thereby puncturing the storage bag 9 made of polycarbonate material. The specific puncture position is located at the wavy convex position. After the storage bag 9 is punctured, the paraffin oil stored in the storage bag 9 flows out along the puncture position, and the puncture position corresponds to the through hole 8. Therefore, the paraffin oil can be discharged along the through hole 8 to the outer wall of the nasofeeding tube body 1, which can not only reduce the friction between the ring 3 and the nasofeeding tube body 1, but also reduce the movement distance of the ring 3 accompanied by the removal of the nasofeeding tube body 1, so that the film 2 can smoothly cover the outer wall of the nasofeeding tube body 1, and the paraffin oil can clean the gastric acid located on the outer wall of the nasofeeding tube body 1, thereby preventing the gastric acid from dripping along the end of the nasofeeding tube body 1 close to the feeding port to the esophagus, pharynx, and nasal cavity, thereby further reducing damage to the human body.

[0038] Furthermore, the cross-sectional shape of the storage bag 9 is a non-closed circular ring, and driving components are arranged in both ends of the storage bag 9; the annular plate penetrates the storage bag 9 and slides sealingly therewith.

[0039] In this embodiment, the driving component is arranged on one side of the spike portion 10. Through the cooperation of the traction component and the driving component, the spike portion 10 is driven to rotate and puncture the storage bag 9, so that the paraffin oil in the storage bag 9 is discharged through the through hole 8 to the outer wall of the nasogastric feeding tube body 1, without the need for additional electrical components.

[0040] Furthermore, the driving assembly includes a rack 11, which is fixedly mounted on the annular plate, one side of the rack 11 is meshedly connected with a gear 1101, a threaded rod 1102 is fixedly connected inside the gear 1101, the threaded rod 1102 is rotatably connected to the inner wall of the ring 3, an eccentric rod 1103 is fixedly connected to the outer side of the threaded rod 1102, one end of the eccentric rod 1103 away from the threaded rod 1102 is rotatably connected to a rotating shaft, one end of the rotating shaft is arranged in a slide groove 1104 and slidably cooperates with it, and the slide groove 1104 is opened at the top of the fixed block 4.

[0041] In this embodiment, when the fixed block 4 moves under the traction of the traction assembly, it drives the rotating shaft to slide in the slide groove 1104. When the rotating shaft slides in the slide groove 1104, it drives the eccentric rod 1103 to rotate with the threaded rod 1102 as the axis. The rotation of the eccentric rod 1103 drives the threaded rod 1102 to rotate. The rotation of the threaded rod 1102 drives the gear 1101 to rotate. The rotation of the gear 1101 drives the rack 11 to rotate. The rotation of the rack 11 drives the annular plate to rotate. The rotation of the annular plate drives the multiple spikes 10 to rotate, thereby puncturing the storage bag 9. When the fixed block 4 is connected to the limit block 601, the rotating shaft is completely separated from the fixed block 4.

[0042] like Fig. 9 As shown, a support plate 1201 is provided on the outside of the storage bag 9, and a lifting assembly is provided on the top of the support plate 1201. The lifting assembly includes a connecting rod 12, which is fixedly connected to the top of the support plate 1201, and the connecting rod 12 is threadedly connected to the outside of the threaded rod 1102; a limiting rod 1202 is fixedly installed on the inner wall of the ring 3, and the connecting rod 12 is slidably connected to the outside of the limiting rod 1202; an extrusion assembly is provided on the outside of the support plate 1201.

[0043] The extrusion assembly includes a plurality of second protrusions 14, which are distributed on the outside of the support plate 1201 in a spiral line, and one end of the second protrusion 14 is set as a curved surface;

[0044] A plurality of grooves are provided on one side of the ring 3 away from the nasogastric tube body 1, in which a first protrusion 13 is slidably fitted. The plurality of first protrusions 13 are distributed in a spiral line on the inner wall of the ring 3, and a side of the first protrusion 13 close to the support plate 1201 is set as an arc surface.

[0045] In this embodiment, when the traction component drives the driving component to rotate, that is, the threaded rod 1102 rotates, the rotation of the threaded rod 1102 drives the connecting rod 12 to move upward under the limiting action of the limiting rod 1202, and the support plate 1201 moves upward following the connecting rod 12. The support plate 1201 moves upward and drives the second protrusion 14 to move upward. At this time, a first protrusion 13 is provided above one end of each second protrusion 14, and one end of the first protrusion 13 extends to the inside of the ring 3. At this time, the second protrusion 14 moves upward to squeeze the first protrusion 13 to move in a direction away from the ring 3, so that multiple first protrusions 13 distributed in a spiral shape extend at the same time, increasing the friction between the ring 3 and the esophagus. Combined with the use of paraffin oil, the friction between the ring 3 and the nasogastric tube body 1 is reduced, and the movement distance of the ring 3 accompanying the removal of the nasogastric tube body 1 is further reduced, so that the film 2 covers the outer wall of the nasogastric tube body 1;

[0046] When the plurality of first protrusions 13 distributed in a spiral shape are in an initial state, they are hidden in the inner wall of the collar 3 to reduce the resistance caused by the insertion of the tube, thereby making the insertion of the tube smoother.

[0047] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function, characterized in that: The invention comprises a nasogastric feeding tube body (1), wherein a foldable film (2) is arranged on the outside of the nasogastric feeding tube body (1), one end of the film (2) is bonded to the outer wall of the nasogastric feeding tube body (1), and when one end of the nasogastric feeding tube body (1) is extended into the stomach, the film (2) is located in the esophagus; The other end of the film (2) is bonded with a collar (3), and the collar (3) and the nasogastric tube body (1) are fixed via a fixing block (4), and the fixing block (4) is pulled by a pulling assembly to slide inside the collar (3) and the nasogastric tube body (1); A cavity (7) is provided in the nasogastric tube body (1), the traction assembly is located in the cavity (7), and the traction assembly comprises a traction rope (5), one end of the traction rope (5) extends to the outside of the feeding end of the nasogastric tube body (1), and the other end of the traction rope (5) is fixed to the fixing block (4) via a pulley (501); A fixing assembly is arranged on one side of the fixing block (4) close to the traction assembly, and the fixing assembly comprises a spring piece (6) and a limit block (601), wherein the spring piece (6) is engaged with the limit block (601), the spring piece (6) is mounted on one side of the fixing block (4), and the limit block (601) is mounted in a cavity (7) of the nasogastric feeding tube body (1).

2. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 1, characterized in that: The interior of the collar (3) is in a hollow state, a storage bag (9) is installed in the collar (3), a side of the storage bag (9) close to the nasogastric tube body (1) is wavy, and the storage bag (9) is made of polycarbonate material; The storage bag (9) is provided with a plurality of rotatable spike portions (10) mounted on the annular plate, the plurality of spike portions (10) are distributed in an annular shape, and each of the spike portions (10) is located at a wave-shaped concave position; A through hole (8) is formed on one side of the collar (3) close to the nasogastric tube body (1).

3. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 2, characterized in that: The cross-sectional shape of the storage bag (9) is a non-closed circular ring, and driving components are arranged in both ends of the storage bag (9); The annular plate penetrates the storage bag (9) and slides sealingly therewith.

4. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 3, characterized in that: The driving component is arranged on one side of the spike portion (10), and through the cooperation of the traction component and the driving component, the spike portion (10) is driven to rotate and puncture the storage bag (9), so that the paraffin oil in the storage bag (9) is discharged through the through hole (8) to the outer wall of the nasogastric feeding tube body (1).

5. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 4, characterized in that: The driving assembly comprises a rack (11), wherein the rack (11) is fixedly mounted on an annular plate, one side of the rack (11) is meshedly connected with a gear (1101), a threaded rod (1102) is fixedly connected inside the gear (1101), the threaded rod (1102) is rotatably connected to the inner wall of the collar (3), an eccentric rod (1103) is fixedly connected to the outer side of the threaded rod (1102), one end of the eccentric rod (1103) away from the threaded rod (1102) is rotatably connected to a rotating shaft, one end of the rotating shaft is arranged in a slide groove (1104) and slidably cooperates with the slide groove (1104), and the slide groove (1104) is opened at the top of the fixed block (4).

6. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 5, characterized in that: A support plate (1201) is arranged on the outside of the storage bag (9), a lifting assembly is arranged on the top of the support plate (1201), and the lifting assembly comprises a connecting rod (12), the connecting rod (12) is fixedly connected to the top of the support plate (1201), and the connecting rod (12) is threadedly connected to the outside of the threaded rod (1102); A limiting rod (1202) is fixedly mounted on the inner wall of the collar (3), and the connecting rod (12) is slidably connected to the outer side of the limiting rod (1202); An extrusion component is arranged on the outer side of the support plate (1201).

7. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 6, characterized in that: The extrusion assembly comprises a plurality of second protrusions (14), the plurality of second protrusions (14) are distributed in a spiral line outside the support plate (1201), and one end of the second protrusion (14) is arranged as a curved surface; A plurality of grooves are provided on a side of the collar (3) away from the nasogastric tube body (1), and a first protrusion (13) is slidably fitted in the groove. The plurality of first protrusions (13) are distributed in a spiral line on the inner wall of the collar (3), and a side of the first protrusion (13) close to the support plate (1201) is arranged as an arc surface.

8. A nasogastric residual volume detection nasogastric feeding tube with safe tube removal function according to claim 1, characterized in that: The invention also comprises a micro-image sensor (15), wherein the micro-image sensor (15) is arranged at one end of the nasofeeding tube body (1) close to the discharge port, an external thread is provided on the top of the micro-image sensor (15), and an internal thread is provided on one end of the nasofeeding tube body (1) close to the micro-image sensor (15), and the micro-image sensor (15) is threadedly connected to the nasofeeding tube body (1).

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