A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring

Abstract

This invention relates to the field of medical device technology and discloses a multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring. The device includes a liquid collection tube and a storage tank. In this invention, multiple sets of liquid inlet grooves are evenly distributed on the end tube wall, coupled with an inlet filter, to block large pieces of gastric contents, reducing the risk of tube blockage from the source. The liquid inlet grooves are equipped with a dedicated backflushing component, which automatically cleans the filter when it becomes clogged. The beveled end face design of the end tube pushes blockages from the filter surface into the tube, where internal cutting blades break up clumps of gastric contents, which are then finely ground by a grinding disc to reduce the volume of contents. This device integrates filtration, anti-clogging, backflushing, breaking up, and grinding functions, improving the safety and efficiency of clinical use. Simultaneously, the connection structure between the gastric contents storage tank and the liquid collection tube is optimized, abandoning cumbersome connection methods and adopting a convenient sealing structure, allowing for quick and easy manual disassembly and assembly of the liquid collection tube, shortening operation time and meeting the needs of efficient clinical diagnosis and monitoring.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a multifunctional gastrointestinal decompression device that integrates negative pressure drainage and enteral nutrition monitoring. Background Technology

[0002] Gastrointestinal decompression is an indispensable and important means of clinical treatment. Based on the principles of negative pressure suction and siphon, it removes gas, liquid, and gastric contents accumulated in the gastrointestinal tract through a gastric tube. It is widely used in the treatment and care of conditions such as acute gastric dilatation, intestinal obstruction, repair of gastrointestinal perforation, and postoperative gastrointestinal anastomosis. It can effectively reduce the pressure and distension of the gastrointestinal tract, prevent gastric contents from leaking into the abdominal cavity, promote the recovery of gastrointestinal function and wound healing, and is of great significance in improving treatment outcomes and reducing complications. With the continuous development of medical technology, integrated multifunctional gastrointestinal decompression devices are gradually replacing traditional split devices. Due to their compact structure, convenient operation, and small space occupation, they are increasingly widely used in clinical practice. However, existing integrated multifunctional gastrointestinal decompression devices still have two major technical pain points in practical application:

[0003] First, the gastric contents aspirated during gastrointestinal decompression are complex, often containing food residue, viscous secretions, mucus, and in some patients, solid impurities such as blood clots. Under negative pressure, these impurities enter the drainage channel and the connection point of the gastric contents storage tank along with the gastric contents. Since the drainage channels of existing devices are mostly single straight tubes without specific anti-clogging mechanisms, impurities tend to deposit and adhere to the inner wall of the drainage tube and the interface of the storage tank after prolonged use, gradually forming blockages and preventing the smooth drainage of gastric contents.

[0004] Secondly, during gastrointestinal decompression therapy, medical staff need to periodically transfer the gastric contents extracted from the storage tank, collect gastric contents samples, and perform case monitoring work such as component analysis and bacterial culture to keep abreast of the patient's gastrointestinal function and changes in condition, providing a basis for adjusting the treatment plan. However, in existing integrated multifunctional gastrointestinal decompression devices, the gastric contents storage tank and the fluid extraction tubing mostly use traditional connection methods such as threaded connections and snap-fit ​​fixation. In addition, some connection parts are equipped with multiple seals to ensure sealing performance. Disassembly requires tools or cumbersome procedures and is time-consuming. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multifunctional gastrointestinal decompression device that integrates negative pressure drainage and enteral nutrition monitoring, solving the problems of easy clogging and cumbersome disassembly of storage tanks and liquid extraction hoses in existing gastrointestinal decompression devices.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring, comprising a liquid extraction hose and a storage tank, wherein the input end of the liquid extraction hose is provided with an anti-blocking component, the anti-blocking component is used to prevent the liquid extraction hose from being blocked, and the input end of the storage tank is provided with a quick-release component, the quick-release component is used to quickly separate the liquid extraction hose;

[0007] The anti-clogging component includes an end tube installed at the input end of the liquid extraction hose. The end tube has multiple liquid inlet grooves evenly distributed around its circumference. A branch tube is fixedly connected to the output end of each liquid inlet groove. A housing is fixedly connected inside the end tube. A rotating motor is installed inside the housing. A rotating shaft is fixedly connected to the output end of the rotating motor. A grinding disc is fixedly connected to the outer wall of the rotating shaft. A cutting blade is fixedly connected to the end of the rotating shaft away from the rotating motor. The grinding disc and the cutting blade are both adapted to the inner circumferential wall of the end tube.

[0008] The quick-release assembly includes a sleeve installed at the output end of the liquid dispensing hose, a connecting tube inserted into the sleeve and connected to the storage tank, an adjustment groove on the outer wall of the sleeve, a slider slidably connected in the adjustment groove, a push ring slidably connected to the outer wall of the sleeve and the inner ring wall of the push ring fixedly connected to the slider, a plurality of rolling grooves evenly distributed around the circumference of the sleeve, ball bearings installed in the rolling grooves, and a retaining groove on the connecting tube, with the ball bearings engaging with the retaining groove.

[0009] Preferably, a drain plate is fixedly connected inside the end pipe, and multiple exhaust pipes are evenly installed on the drain plate along the circumference, and the exhaust pipes are connected to the branch pipes.

[0010] Preferably, a first flange is fixedly connected inside the sleeve, a first push rod is slidably connected at the center of the first flange, and a first conical plug is fixedly connected to one end of the first push rod near the connecting pipe.

[0011] Preferably, a second flange is fixedly connected inside the connecting pipe, a second push rod is slidably connected at the center of the second flange, and a second conical plug is fixedly connected to one end of the second push rod near the sleeve.

[0012] Preferably, the end of the sleeve away from the liquid extraction hose has a first conical groove, and the first conical groove is adapted to the first conical block.

[0013] Preferably, the end of the connecting pipe away from the storage tank has a second conical groove, and the second conical groove is adapted to the second conical block.

[0014] Preferably, both the first push rod and the second push rod are fitted with compression springs, and the outer walls of both the first conical block and the second conical block are fixedly connected with sealing rings.

[0015] Preferably, a retaining ring is fixedly connected to the outer wall of the sleeve, and a return spring is sleeved on the outer wall of the sleeve, with the return spring located between the retaining ring and the push ring.

[0016] Preferably, the connecting pipe is fixedly connected to the storage tank, and the input end of the connecting pipe is connected to the storage tank.

[0017] Preferably, an air pump is fixedly connected to the outer wall of the storage tank, and an air extraction pipe is fixedly connected to the input end of the air pump. The air pump and the storage tank are connected through the air extraction pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this invention, multiple sets of inlet grooves are evenly opened on the wall of the end tube. Combined with the input end filter, large pieces of gastric contents can be effectively blocked, reducing the probability of pipeline blockage from the source. The inlet groove is equipped with a dedicated backflushing component, which can automatically start the cleaning operation when the filter is blocked without manual intervention. The end tube adopts a beveled end face design, which can actively push the blockage on the surface of the filter into the tube during operation. Combined with the internal cutting blade, it can quickly cut and crush lumps and blocks of gastric contents. The grinding disc can further refine the crushed gastric contents, significantly reducing the volume of gastric contents and allowing them to pass smoothly through the pipeline. This completely solves the problems of easy clogging and difficult unblocking of traditional devices. The overall structure integrates multiple functions such as filtration, anti-clogging, backflushing, crushing and grinding into one, optimizing the gastrointestinal decompression process and improving the safety and efficiency of clinical use.

[0020] 2. In this invention, by optimizing the connection structure between the gastric contents storage container and the fluid collection tube, the cumbersome connection methods such as existing threaded connections and multiple sealing clips are eliminated. A convenient and reliable sealing connection structure design is adopted, requiring no tools. Medical staff can quickly disassemble the fluid collection tube and the storage container with simple operations, significantly reducing operation time and meeting the needs of rapid clinical diagnosis and treatment and efficient monitoring. The anti-clogging mechanism and the convenient connection structure are integrated into one, solving both the problem of frequent clogging in existing devices and the problem of cumbersome disassembly of the fluid collection tube. At the same time, it takes into account sealing reliability, ease of operation, and safety of use, making up for the shortcomings of existing improvement solutions that can only solve a single problem and cannot take into account comprehensive performance. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring according to the present invention.

[0022] Figure 2 This is a schematic cross-sectional view of the end tube of a multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring according to the present invention.

[0023] Figure 3 This is a cross-sectional view of the shell of a multifunctional gastrointestinal decompression device that integrates negative pressure drainage and enteral nutrition monitoring according to the present invention.

[0024] Figure 4 This is a schematic cross-sectional view of the push ring of a multifunctional gastrointestinal decompression device that integrates negative pressure drainage and enteral nutrition monitoring according to the present invention.

[0025] Figure 5 This is a schematic cross-sectional view of the cannula of a multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring according to the present invention.

[0026] Figure 6 This is a cross-sectional view of the connecting tube of a multifunctional gastrointestinal decompression device that integrates negative pressure drainage and enteral nutrition monitoring according to the present invention.

[0027] In the diagram: 1. Liquid extraction hose; 2. Sleeve; 3. End tube; 4. Connecting tube; 5. Storage tank; 6. Suction pipe; 7. Air pump; 8. Cleaning disc; 9. Exhaust pipe; 10. Liquid inlet tank; 11. Branch pipe; 12. Housing; 13. Grinding disc; 14. Rotating shaft; 15. Cutting blade; 16. Rotating motor; 17. Push ring; 18. Retaining ring; 19. Return spring; 20. Rolling groove; 21. Sealing ring; 22. First flange; 23. First push rod; 24. Compression spring; 25. First conical block; 26. First conical groove; 27. Slot; 28. Adjustment groove; 29. ​​Slider; 30. Ball bearing; 31. Second flange; 32. Second conical groove; 33. Second conical block; 34. Second push rod. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] refer to Figures 1-6 The diagram illustrates a multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring. It includes a liquid collection tube 1 and a storage tank 5. The input end of the liquid collection tube 1 is equipped with an anti-blocking component to prevent blockage. The input end of the storage tank 5 is equipped with a quick-release component for quickly separating the liquid collection tube 1. A specific embodiment is shown below:

[0030] Example 1

[0031] The anti-clogging component includes an end tube 3 installed at the input end of the liquid inlet hose 1. Multiple liquid inlet grooves 10 are evenly distributed circumferentially on the end tube 3. A branch pipe 11 is fixedly connected to the output end of each liquid inlet groove 10. A housing 12 is fixedly connected inside the end tube 3. A rotary motor 16 is installed inside the housing 12. A rotating shaft 14 is fixedly connected to the output end of the rotary motor 16. A grinding disc 13 is fixedly connected to the outer wall of the rotating shaft 14. A cutting blade 15 is fixedly connected to the end of the rotating shaft 14 furthest from the rotary motor 16. The grinding disc 13 and the cutting blade 15 are both adapted to the inner ring wall of the end pipe 3; a dredging disc 8 is fixedly connected inside the end pipe 3, and multiple exhaust pipes 9 are evenly installed around the circumference of the dredging disc 8, and the exhaust pipes 9 are connected to the branch pipe 11; the connecting pipe 4 is fixedly connected to the storage tank 5, and the input end of the connecting pipe 4 is connected to the storage tank 5; an air pump 7 is fixedly connected to the outer wall of the storage tank 5, and an air extraction pipe 6 is fixedly connected to the input end of the air pump 7; the air pump 7 and the storage tank 5 are connected through the air extraction pipe 6.

[0032] Insert the collection tube 1 into the area requiring decompression. Both the collection tube 1 and the end tube 3 are made of flexible medical silicone. Multiple inlet grooves 10 are evenly distributed inside the end tube 3 to prevent blockage of a single inlet groove 10, which could lead to poor drainage. This also reduces local pressure and damage to the gastric mucosa caused by concentrated extraction from the collection tube 1. Activate the air pump 7, creating negative pressure in the inlet grooves 10. Under the action of the filter at the inlet end of the inlet groove 10, the gastrointestinal fluid flows through the inlet groove 10 into the branch tubes 11. Multiple branch tubes 11 converge the gastrointestinal fluid into the collection tube 1. Simultaneously, the rotating motor 16 inside the end tube 3 rotates, driving the cutting blade 15 and the grinding disc 13 to rotate synchronously. The cutting blade 15 breaks up larger gastric contents entering the end tube 3. The broken gastric contents fall onto the grinding disc 13, where they are subjected to centrifugal force. The gastric contents are further ground by the grinding disc 13 and the inner wall of the end tube 3, reducing their size. When the flow rate sensor installed in the inlet tank 10 detects an abnormal flow rate of gastrointestinal fluid, the micro pneumatic pump integrated in the draining disc 8 discharges gas. The gas enters the branch pipe 11 through the exhaust pipe 9. At this time, the valve installed at the output end of the branch pipe 11 is closed, and the gas moves along the inlet tank 10 to its input end to clean the gastric contents on the filter screen. The gastric contents on the filter screen contact the cutting blade 15 along the inclined surface set in the end tube 3. After the filter screen is cleaned, the one-way valve installed in the exhaust pipe 9 is closed, and the valve at the output end of the branch pipe 11 is opened to continue to drain the gastrointestinal fluid. The ground gastric contents and gastrointestinal fluid enter the storage tank 5 under the drainage of the liquid extraction hose 1.

[0033] Example 2

[0034] The quick-release assembly includes a sleeve 2 installed at the output end of the liquid dispensing hose 1. A connecting pipe 4 is inserted into the sleeve 2 and is connected to the storage tank 5. An adjustment groove 28 is provided on the outer wall of the sleeve 2. A slider 29 is slidably connected in the adjustment groove 28. A push ring 17 is slidably connected to the outer wall of the sleeve 2, and the inner ring wall of the push ring 17 is fixedly connected to the slider 29. Multiple rolling grooves 20 are evenly provided in the circumference of the sleeve 2. Ball bearings 30 are installed in the rolling grooves 20. A retaining groove 27 is provided on the connecting pipe 4, and the ball bearings 30 are engaged with the retaining groove 27. A retaining ring 18 is fixedly connected to the outer wall of the sleeve 2. A return spring 19 is sleeved on the outer wall of the sleeve 2 and is located between the retaining ring 18 and the push ring 17.

[0035] When the gastrointestinal fluid and gastric contents drained into the storage tank 5 need to be transferred for sampling, push the push ring 17 along the adjustment groove 28 to move the push ring 17 away from the rolling groove 20. The push ring 17 releases the restriction on the ball bearings 30 in the rolling groove 20, allowing the ball bearings 30 to roll freely in the rolling groove 20. This releases the ball bearings 30 from the slot 27, allowing the connecting tube 4 to be pulled out from the sleeve 2, thus quickly separating the liquid extraction hose 1 from the storage tank 5. Keeping the push ring 17 in the same position, insert the connecting tube 4 on the storage tank 5 to be connected into the sleeve 2. When the input end of the connecting tube 4 abuts against the output end of the sleeve 2, the slot 27 of the connecting tube 4 is located below the rolling groove 20. Release the push ring 17, and under the rebound force of the return spring 19, the push ring 17 moves in the opposite direction along the adjustment groove 28, causing the push ring 17 to squeeze the ball bearings 30, so that multiple ball bearings 30 are engaged with the slot 27, completing the quick connection between the storage tank 5 and the liquid extraction hose 1.

[0036] Example 3

[0037] A first flange 22 is fixedly connected inside the sleeve 2. A first push rod 23 is slidably connected at the center of the first flange 22. A first conical block 25 is fixedly connected to the end of the first push rod 23 near the connecting pipe 4. A second flange 31 is fixedly connected inside the connecting pipe 4. A second push rod 34 is slidably connected at the center of the second flange 31. A second conical block 33 is fixedly connected to the end of the second push rod 34 near the sleeve 2. A first conical groove 26 is opened at the end of the sleeve 2 away from the liquid extraction hose 1, and the first conical groove 26 is adapted to the first conical block 25. A second conical groove 32 is opened at the end of the connecting pipe 4 away from the storage tank 5, and the second conical groove 32 is adapted to the second conical block 33. A compression spring 24 is fitted on both the first push rod 23 and the second push rod 34. A sealing ring 21 is fixedly connected to the outer wall of both the first conical block 25 and the second conical block 33.

[0038] Before the storage tank 5 is separated from the liquid extraction hose 1, the storage tank 5 draws in the gastrointestinal fluid and gastric contents from the sleeve 2 and the connecting hose 4. After the sleeve 2 and the connecting hose 4 are separated, the compression spring 24 on the first push rod 23 pushes the first conical block 25 to abut against the first conical groove 26, preventing the gastrointestinal fluid and gastric contents from flowing out of the sleeve 2 and the liquid extraction hose 1. The compression spring 24 on the second push rod 34 pushes the second conical block 33 to abut against the second conical groove 32, preventing the gastrointestinal fluid and gastric contents from flowing out of the connecting hose 4. When the sleeve 2 and the connecting hose 4 are installed, the first conical block 25 and the second conical block 33 abut against each other, causing the first conical groove 26 and the second conical groove 32 to open automatically, connecting the sleeve 2 and the connecting hose 4. After the sleeve 2 and the connecting hose 4 are installed, the distance between the first conical block 25 and the first conical groove 26, and between the second conical block 33 and the second conical groove 32, is much greater than the size of the gastric contents.

[0039] The working principle of this invention is as follows: When the air pump 7 is started, the inlet tank 10 generates negative pressure. Gastrointestinal fluid flows into the branch pipe 11 through the inlet tank 10. The cutting blade 15 breaks up larger gastric contents entering the end pipe 3. The broken gastric contents fall onto the grinding disc 13. Under centrifugal force, the gastric contents move between the grinding disc 13 and the inner wall of the end pipe 3. The grinding disc 13 further grinds the gastric contents. When the flow rate sensor installed in the inlet tank 10 detects an abnormal flow rate of the gastrointestinal fluid, the micro-pneumatic pump integrated in the unblocking disc 8 discharges gas to clean the gastric contents on the filter screen. The ground gastric contents and gastrointestinal fluid are guided into the storage tank 5 by the sampling hose 1. When the gastrointestinal fluid and gastric contents guided into the storage tank 5 need to be transferred for sampling, the push ring 17 is pushed along the adjusting groove 28, moving the push ring 17 away from the rolling groove 20. The push ring 17 releases the limit on the ball bearings 30 in the rolling groove 20, keeping the position of the push ring 17 unchanged. The connecting tube 4 on the storage tank 5 to be connected is inserted into the sleeve 2. The push ring 17 is released, and under the action of the return spring 19, the push ring 17 moves in the opposite direction along the adjusting groove 28, so that the push ring 17 squeezes the ball bearings 30, so that multiple ball bearings 30 are engaged with the slot 27, completing the quick connection between the storage tank 5 and the liquid extraction hose 1. After the sleeve 2 and the connecting tube 4 are separated, the compression spring 24 on the first push rod 23 pushes the first conical block 25 to abut against the first conical groove 26, and the compression spring 24 on the second push rod 34 pushes the second conical block 33 to abut against the second conical groove 32. When the sleeve 2 and the connecting tube 4 are installed, the first conical block 25 and the second conical block 33 abut against each other, so that the first conical groove 26 and the second conical groove 32 open automatically.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring, comprising a liquid collection tube (1) and a storage tank (5), characterized in that: The inlet end of the liquid extraction hose (1) is provided with an anti-blocking component, which is used to prevent the liquid extraction hose (1) from being blocked. The inlet end of the storage tank (5) is provided with a quick-release component, which is used to quickly separate the liquid extraction hose (1). The anti-clogging component includes an end tube (3) installed at the input end of the liquid extraction hose (1). The end tube (3) is evenly provided with multiple liquid inlet grooves (10) along the circumference. The output end of the liquid inlet groove (10) is fixedly connected to a branch pipe (11). A housing (12) is fixedly connected inside the end tube (3). A rotating motor (16) is installed inside the housing (12). A rotating shaft (14) is fixedly connected to the output end of the rotating motor (16). A grinding disc (13) is fixedly connected to the outer wall of the rotating shaft (14). A cutting blade (15) is fixedly connected to the end of the rotating shaft (14) away from the rotating motor (16). The grinding disc (13) and the cutting blade (15) are both adapted to the inner ring wall of the end tube (3). The quick-release assembly includes a sleeve (2) installed at the output end of the liquid dispensing hose (1), a connecting pipe (4) inserted into the sleeve (2), and the connecting pipe (4) connected to the storage tank (5). An adjustment groove (28) is provided on the outer wall of the sleeve (2), and a slider (29) is slidably connected in the adjustment groove (28). A push ring (17) is slidably connected to the outer wall of the sleeve (2), and the inner ring wall of the push ring (17) is fixedly connected to the slider (29). Multiple rolling grooves (20) are evenly provided in the sleeve (2) along the circumference. Ball bearings (30) are installed in the rolling grooves (20). A slot (27) is provided on the connecting pipe (4), and the ball bearings (30) are engaged with the slot (27).

2. The multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring according to claim 1, characterized in that: The end pipe (3) is fixedly connected to a drain plate (8), and the drain plate (8) is evenly installed with multiple exhaust pipes (9) along the circumference, and the exhaust pipes (9) are connected to the branch pipe (11).

3. The multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring according to claim 1, characterized in that: The sleeve (2) is fixedly connected to a first flange (22), and a first push rod (23) is slidably connected at the center of the first flange (22). A first conical plug (25) is fixedly connected to one end of the first push rod (23) near the connecting pipe (4).

4. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring as described in claim 3, characterized in that: The connecting pipe (4) is fixedly connected to a second flange (31), and a second push rod (34) is slidably connected at the center of the second flange (31). A second conical plug (33) is fixedly connected to one end of the second push rod (34) near the sleeve (2).

5. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring as described in claim 4, characterized in that: The sleeve (2) has a first conical groove (26) at the end away from the liquid extraction hose (1), and the first conical groove (26) is adapted to the first conical block (25).

6. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring as described in claim 5, characterized in that: The connecting pipe (4) has a second conical groove (32) at one end away from the storage tank (5), and the second conical groove (32) is adapted to the second conical block (33).

7. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring as described in claim 6, characterized in that: A compression spring (24) is fitted on both the first push rod (23) and the second push rod (34), and a sealing ring (21) is fixedly connected to the outer wall of both the first conical block (25) and the second conical block (33).

8. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring as described in claim 1, characterized in that: A retaining ring (18) is fixedly connected to the outer wall of the sleeve (2), and a return spring (19) is sleeved on the outer wall of the sleeve (2). The return spring (19) is located between the retaining ring (18) and the push ring (17).

9. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring as described in claim 1, characterized in that: The connecting pipe (4) is fixedly connected to the storage tank (5), and the input end of the connecting pipe (4) is connected to the storage tank (5).

10. A multifunctional gastrointestinal decompression device integrating negative pressure drainage and enteral nutrition monitoring according to claim 1, characterized in that: An air pump (7) is fixedly connected to the outer wall of the storage tank (5), and an air extraction pipe (6) is fixedly connected to the input end of the air pump (7). The air pump (7) and the storage tank (5) are connected through the air extraction pipe (6).

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