Irrigation and drainage device for intestinal fistula

Abstract

The invention belongs to the technical field of medical equipment, and particularly relates to an intestinal fistula flushing and drainage device which comprises a bottom plate, a telescopic drainage cylinder is fixedly connected to the upper side wall of the bottom plate, a lifting plate is fixedly connected to the upper side wall of the telescopic drainage cylinder, and a plurality of elastic telescopic rods are fixedly connected between the lifting plate and the bottom plate. The upper side wall of the lifting plate fixedly communicates with an insertion pipe, and the lower end of the insertion pipe extends out of the lifting plate. When the telescopic drainage cylinder is full of drainage liquid and a nurse does not find the situation in time, flushing work can be automatically stopped, the drainage tube is blocked, the problem that flushing liquid flows to a bed to pollute bedding is avoided, meanwhile, backflow of the drainage liquid is completely eradicated, the retrograde infection risk is thoroughly blocked, and the working efficiency of the nurse is improved. And intestinal mucosa injury caused by negative pressure failure or complications caused by abdominal pressure rise are avoided.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to an intestinal fistula flushing and drainage device. Background Technology

[0002] An enterocutaneous fistula is an abnormal passage formed between the intestine and other organs, the abdominal cavity, or the body surface. If the intestine forms an abnormal passage with other organs, it is called an internal enterocutaneous fistula; if the intestine forms an abnormal passage with the abdominal cavity or the body surface, it is called an external enterocutaneous fistula. Inflammation and infection can cause enterocutaneous fistulas, and a few enterocutaneous fistulas are congenital malformations. When treating enterocutaneous fistulas, it is necessary to first flush the fistula, and then perform negative pressure suction. For example, an enterocutaneous fistula flushing and drainage tube is proposed in patent publication number CN110141697A.

[0003] The existing intestinal fistula irrigation and drainage device requires the use of a negative pressure drainage tube to collect the irrigation fluid during use. When the negative pressure drainage tube is full of irrigation fluid and the nurse does not pay attention to this situation, the irrigation fluid can easily flow onto the bed, causing soiling of the bedding. In addition, during the operation of the drainage device, the drainage tube may become blocked due to residual necrotic tissue fragments, undigested residues, feces and other substances in the drainage fluid. If medical staff cannot detect this situation in time and clear the blockage, the intestinal fluid, fecal residue and other impurities cannot be discharged and will accumulate in the abdominal cavity or around the fistula. Bacteria will multiply in large numbers and cause the spread of infection, which will seriously endanger the patient's health and aggravate the patient's suffering.

[0004] Therefore, a fistula flushing and drainage device is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing an intestinal fistula flushing and drainage device that can prevent backflow of drainage fluid, prevent leakage of drainage fluid, and automatically clear the drainage tube.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an intestinal fistula irrigation and drainage device, comprising a base plate, a telescopic drainage tube fixedly connected to the upper side wall of the base plate, a lifting plate fixedly connected to the upper side wall of the telescopic drainage tube, a plurality of elastic telescopic rods fixedly connected between the lifting plate and the base plate, an insertion pipe fixedly connected to the upper side wall of the lifting plate, the lower end of the insertion pipe extending out of the lifting plate and communicating with the telescopic drainage tube, a drainage tube inserted into the insertion pipe, and further comprising: The insertion end mechanism is connected to the upper end of the drainage tube and is used for the delivery and drainage of flushing fluid; The interception component, located on the upper side wall of the base plate, can automatically block the drainage tube; An adsorption component is disposed on the outside of the insertion end mechanism to prevent leakage of the drainage fluid and to fix the insertion end mechanism.

[0007] In the aforementioned enterocutaneous fistula irrigation and drainage device, the insertion end mechanism includes an insertion head fixedly connected to the upper end of the drainage tube. The side wall of the insertion head has multiple drainage ports, which are distributed in a ring around the side wall of the insertion head. An annular cavity is formed inside the insertion head, located above the drainage ports. Multiple cleaning ports are formed on the side wall of the annular cavity. A flushing tube is fixedly connected to the lower wall of the annular cavity. The lower end of the flushing tube extends out of the insertion head and is connected to an external pump assembly. A backflushing sealing assembly is provided inside the insertion head.

[0008] In the aforementioned enterocutaneous fistula irrigation and drainage device, the sealing and backflushing assembly includes a sealing plate fixedly connected to the inner wall of the insertion head. A micro geared motor is fixedly connected to the upper side wall of the sealing plate. The output end of the micro geared motor passes through the sealing plate and is fixedly connected to a rotating plate. Multiple sealing plates are fixedly connected to the lower side wall of the rotating plate. The sealing plates are in contact with the inner wall of the insertion head. A first control valve is provided inside the irrigation tube. A backflushing short tube is fixedly connected to the wall of the irrigation tube. A second control valve is provided inside the backflushing short tube.

[0009] In the aforementioned enterocutaneous fistula irrigation and drainage device, the interception assembly includes a support frame fixedly connected to the side wall of the base plate. The support frame has an inverted L-shaped structure. An interception frame is fixedly connected to the upper end of the support frame. A miniature electric push rod is fixedly connected to the side wall of the interception frame. The moving end of the miniature electric push rod passes through the interception frame and is fixedly connected to a pressing plate. A trigger switch and a controller are fixedly connected to the lower inner wall of the support frame. The trigger switch and the controller are electrically connected.

[0010] In the aforementioned enterocutaneous fistula irrigation and drainage device, the adsorption assembly includes an installation cylinder sleeved on the outside of the insertion head. A flexible cover is fixedly sleeved on the outer wall of the installation cylinder. The flexible cover is a transparent structure. A sealing rubber ring is fixedly connected to the inner wall of the installation cylinder. An adsorption ring made of rubber is fixedly connected to the upper side wall of the flexible cover. An annular baffle plate is fixedly connected to the inner wall of the adsorption ring. Multiple short adsorption tubes are fixedly inserted into the side wall of the annular baffle plate. A suction cup is fixedly connected to the upper end of each short adsorption tube. An air extraction tube is fixedly connected to the outer wall of the adsorption ring. An air extraction assembly is connected to the end of the air extraction tube away from the adsorption ring.

[0011] In the above-mentioned intestinal fistula irrigation and drainage device, the air extraction assembly includes an air extraction cylinder, which is connected to an air extraction pipe. A threaded cylinder is fixedly connected to the side wall of the air extraction cylinder away from the air extraction pipe. A threaded rod is threadedly connected inside the threaded cylinder. A piston plate is rotatably connected to one end of the threaded rod located inside the threaded cylinder. A rotating plate is fixedly connected to one end of the threaded rod extending out of the air extraction cylinder.

[0012] In the above-mentioned intestinal fistula irrigation and drainage device, a connecting frame is fixedly connected to the upper side wall of the lifting plate, a connecting ring is fixedly connected to the upper end of the connecting frame, a laser flow rate sensor is fixedly connected to the inner wall of the connecting ring, and the laser flow rate sensor is electrically connected to the controller.

[0013] In the above-mentioned intestinal fistula irrigation and drainage device, the side wall of the suction cylinder is provided with a pressure relief hole, and the pressure relief hole and the threaded cylinder are located on the same side.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention features a stop-start component that automatically stops flushing and seals the drainage tube when the retractable drainage tube is full of drainage fluid and the nurse fails to notice this in time. This prevents the flushing fluid from flowing onto the bed and causing bedding contamination. At the same time, it prevents backflow of drainage fluid, completely blocking the risk of retrograde infection and avoiding complications caused by intestinal mucosal damage or increased abdominal pressure due to negative pressure failure.

[0015] This invention, through its designed adsorption component, can isolate the drainage opening on the patient's body surface from the outside environment during the flushing and drainage process for patients with enterocutaneous fistulas, preventing complications such as skin eczema and erosion caused by leakage of drainage fluid, and creating a clean and stable healing environment for the growth of fistula granulation tissue.

[0016] This invention, through its sealing and backflushing component, can automatically clear blockages in drainage tubes by using a cleaning solution to backflushing them when blockages occur during use. This prevents complications such as fistula effusion, abdominal infection, and delayed fistula healing caused by poor drainage. At the same time, it avoids the adhesion, hardening, or irreversible blockage of drainage tubes caused by long-term retention of blockage material in the tube, thus extending the service life of consumables. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an intestinal fistula irrigation and drainage device provided by the present invention; Figure 2 This is a schematic diagram of the internal structure of the insertion head in an intestinal fistula irrigation and drainage device provided by the present invention; Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a schematic diagram of the insertion end mechanism and adsorption component in an intestinal fistula irrigation and drainage device provided by the present invention; Figure 5 This is a schematic diagram showing the positional relationship of the sealing rubber ring in an intestinal fistula irrigation and drainage device provided by the present invention; Figure 6 This is a schematic diagram of the air extraction component in an intestinal fistula flushing and drainage device provided by the present invention; Figure 7This is a schematic diagram of the interception component in an intestinal fistula irrigation and drainage device provided by the present invention; Figure 8 This is a schematic diagram showing the positional relationship of the laser flow velocity sensor in an intestinal fistula irrigation and drainage device provided by the present invention; Figure 9 This is a schematic diagram of the surface structure of the stop frame in an intestinal fistula flushing and drainage device provided by the present invention.

[0018] In the diagram: 1. Base plate, 2. Telescopic drainage tube, 3. Lifting plate, 4. Elastic telescopic rod, 5. Insertion pipe, 6. Drainage tube, 7. Insertion end mechanism, 71. Insertion head, 72. Drainage port, 8. Annular cavity, 9. Cleaning port, 10. Flushing pipe, 11. Sealing and backflushing assembly, 111. Sealing plate, 112. Miniature geared motor, 12. Rotating plate, 13. Sealing plate, 14. First control valve, 15. Backflushing short pipe, 16. Second control valve, 17. Cut-off assembly, 171. Support frame, 172. Cut-off frame, 1 8. Miniature electric push rod, 19. Press plate, 20. Trigger switch, 21. Controller, 22. Adsorption assembly, 221. Mounting cylinder, 222. Flexible cover, 23. Sealing rubber ring, 24. Adsorption ring, 25. Annular barrier plate, 26. Adsorption short tube, 27. Suction cup, 28. Vacuum tube, 29. Vacuum assembly, 291. Vacuum cylinder, 292. Threaded cylinder, 30. Threaded rod, 31. Piston plate, 32. Rotating plate, 33. Connecting frame, 34. Connecting ring, 35. Laser flow rate sensor, 36. Pressure relief hole. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-9 The illustrated intestinal fistula irrigation and drainage device includes a base plate 1, a telescopic drainage tube 2 fixedly connected to the upper side wall of the base plate 1, a lifting plate 3 fixedly connected to the upper side wall of the telescopic drainage tube 2, multiple elastic telescopic rods 4 fixedly connected between the lifting plate 3 and the base plate 1, an insertion tube 5 fixedly connected to the upper side wall of the lifting plate 3, the lower end of the insertion tube 5 extending out of the lifting plate 3 and communicating with the telescopic drainage tube 2, and a drainage tube 6 inserted into the insertion tube 5. The device also includes: The insertion end mechanism 7 is connected to the upper end of the drainage tube 6. The insertion end mechanism 7 includes an insertion head 71 fixedly connected to the upper end of the drainage tube 6. The side wall of the insertion head 71 has multiple drainage ports 72, which are distributed in a ring around the side wall of the insertion head 71. An annular cavity 8 is formed inside the insertion head 71, located above the drainage ports 72. Multiple cleaning ports 9 are formed on the side wall of the annular cavity 8. A flushing tube 10 is fixedly connected to the lower wall of the annular cavity 8. The lower end of the flushing tube 10 extends out of the insertion head 71 and is connected to an external pump assembly. A sealing backflushing assembly is provided inside the insertion head 71. 11. The sealing backflushing assembly 11 includes a sealing plate 111 fixedly connected to the inner wall of the insertion head 71. A micro geared motor 112 is fixedly connected to the upper side wall of the sealing plate 111. The output end of the micro geared motor 112 passes through the sealing plate 111 and is fixedly connected to a rotating plate 12. A plurality of sealing plates 13 are fixedly connected to the lower side wall of the rotating plate 12. The sealing plates 13 are in contact with the inner wall of the insertion head 71. A first control valve 14 is provided in the flushing pipe 10. A backflushing short pipe 15 is fixedly connected to the pipe wall of the flushing pipe 10. A second control valve 16 is provided in the backflushing short pipe 15 for conveying and draining flushing fluid. The interception component 17 is installed on the upper side wall of the base plate 1. The interception component 17 includes a support frame 171 fixedly connected to the upper side wall of the base plate 1. The support frame 171 has an inverted L-shaped structure. An interception frame 172 is fixedly connected to the upper end of the support frame 171. A miniature electric push rod 18 is fixedly connected to the side wall of the interception frame 172. The moving end of the miniature electric push rod 18 passes through the interception frame 172 and is fixedly connected to a pressing plate 19. A trigger switch 20 and a controller 21 are fixedly connected to the lower inner wall of the support frame 171. The trigger switch 20 and the controller 21 are electrically connected and can automatically block the drainage tube 6. The adsorption assembly 22 is disposed outside the insertion end mechanism 7. The adsorption assembly 22 includes an installation cylinder 221 sleeved on the outside of the insertion head 71. A flexible cover 222 is fixedly sleeved on the outer wall of the installation cylinder 221. The flexible cover 222 is a transparent structure. A sealing rubber ring 23 is fixedly connected to the inner wall of the installation cylinder 221. An adsorption ring 24 is fixedly connected to the upper side wall of the flexible cover 222. The adsorption ring 24 is made of rubber. An annular barrier plate 25 is fixedly connected to the inner wall of the adsorption ring 24. Multiple adsorption short tubes 26 are fixedly inserted into the side wall of the annular barrier plate 25. A suction cup 27 is fixedly connected to the upper end of the adsorption short tubes 26. An air extraction tube 28 is fixedly connected to the outer wall of the adsorption ring 24. An air extraction assembly 29 is connected to the end of the air extraction tube 28 away from the adsorption ring 24. This can prevent leakage of the drainage liquid and fix the insertion end mechanism 7.

[0021] The air extraction assembly 29 includes an air extraction cylinder 291, which is connected to an air extraction pipe 28. A threaded cylinder 292 is fixedly connected to the side wall of the air extraction cylinder 291 away from the air extraction pipe 28. A threaded rod 30 is threadedly connected to the inside of the threaded cylinder 292. A piston plate 31 is rotatably connected to one end of the threaded rod 30 inside the threaded cylinder 292. A rotating plate 32 is fixedly connected to one end of the threaded rod 30 extending out of the air extraction cylinder 291. A pressure relief hole 36 is provided on the side wall of the air extraction cylinder 291. The pressure relief hole 36 and the threaded cylinder 292 are located on the same side.

[0022] A connecting frame 33 is fixedly connected to the upper side wall of the lifting plate 3. A connecting ring 34 is fixedly connected to the upper end of the connecting frame 33. A laser flow rate sensor 35 is fixedly connected to the inner wall of the connecting ring 34. The laser flow rate sensor 35 is electrically connected to the controller 21.

[0023] The operating principle of this invention is explained as follows: Before using the flushing and drainage device, the insertion head 71 is first inserted into the sealing rubber ring 23 on the inner wall of the mounting cylinder 221, and the insertion length of the insertion head 71 is adjusted. The insertion head 71 and the mounting cylinder 221 are relatively fixed by the squeezing force between the sealing rubber ring 23 and the insertion head 71. Then, the medical staff inserts the insertion head 71 into the fistula on the patient's body surface to a depth of 5cm. After the insertion head 71 is inserted into the fistula, the medical staff needs to press the suction ring 24 to extend the suction ring. The suction cup 27 of the attachment ring 24 comes into contact with the skin around the fistula. Then, the medical staff rotates the rotating plate 32, which drives the threaded rod 30 to rotate. Through the cooperation of the threaded rod 30 and the threaded cylinder 292, the threaded rod 30 drives the piston plate 31 to move. During the movement, the piston plate 31 will extract the gas inside the suction ring 24 and below the annular barrier plate 25 through the suction tube 28. The gas inside the suction tube 26 and the suction cup 27 will also be extracted along with it, so that the suction cup 27 can be tightly attached to the patient's skin. Next, medical staff send an electrical signal to controller 21 via an external switch. Upon receiving the signal, controller 21 controls the external pump assembly to operate and controls the micro electric push rod 18 to separate the pressing plate 19 from the drainage tube 6. The external pump assembly delivers the flushing fluid through the flushing tube 10 into the annular cavity 8 and sprays it through the cleaning port 9 onto the entire inner wall of the fistula and the opening connecting the fistula to the intestinal lumen. This ensures that the flushing fluid can fully infiltrate the necrotic tissue and areas of secretion accumulation within the fistula, dissolve residual digestive fluid, and flush away fecal residue, preventing infection or delayed healing caused by local dead spots. The flushed fluid, carrying impurities, enters the drainage tube 6 through the drainage port 72 and is then transported to the telescopic drainage tube 2 for storage. As the drainage fluid enters the telescopic drainage tube 2, the negative pressure state inside the telescopic drainage tube 2 changes, and the pressure changes within the elastic tube. Under the pushing force of the telescopic rod 4, the upper end of the telescopic drainage tube 2 will drive the lifting plate 3 to move upward gradually. When the telescopic drainage tube 2 is about to be full, the lifting plate 3 will touch the trigger switch 20. The trigger switch 20 will send an electrical signal to the controller 21. After receiving the electrical signal, the controller 21 will control the external pump assembly to stop the delivery work immediately and control the micro electric push rod 18 to work. The micro electric push rod 18 will drive the pressing plate 19 to squeeze the drainage tube 6 and block the downstream section of the drainage tube 6. At the same time, the controller 21 will control the internal buzzer module to work and emit a prompt sound to remind the operator to clean in time. This will prevent the flushing fluid from flowing onto the bed and causing bedding contamination. At the same time, it will prevent the drainage fluid from flowing back and completely block the risk of retrograde infection, and avoid complications caused by intestinal mucosal damage or increased abdominal pressure due to negative pressure failure. When the drainage device is in operation, if the drainage tube 6 becomes blocked due to food residue, feces, or other substances, the flow rate of the liquid inside the drainage tube 6 will suddenly decrease. After the controller 21 detects the blockage in the drainage tube 6 through the laser flow rate sensor 35, it will control the micro geared motor 112 to drive the rotating plate 12 to rotate at a certain angle. The rotating plate 12 will drive the sealing plate 13 to rotate, using the sealing plate 13 to seal the drainage port 72. Then, the controller 21 controls the first control valve 14 to close and controls the second control valve 16 to open (the first control valve 14 is initially in the open state). In the initial state, the second control valve 16 is closed, and the controller 21 increases the power of the external pump assembly. The external pump assembly delivers flushing fluid through the flushing pipe 10 and the backflushing short pipe 15 into the insertion head 71. At this time, the drainage port 72 is blocked, and the flushing fluid enters the drainage pipe 6 to backflush and clean the blockage in the drainage pipe 6. This prevents complications such as fistula effusion, abdominal infection, and delayed fistula healing caused by poor drainage. At the same time, it avoids the adhesion, hardening, or irreversible blockage of the drainage pipe 6 caused by long-term retention of blockage in the pipe, thus extending the service life of consumables.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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. An intestinal fistula irrigation and drainage device, comprising a base plate (1), wherein a telescopic drainage tube (2) is fixedly connected to the upper side wall of the base plate (1), a lifting plate (3) is fixedly connected to the upper side wall of the telescopic drainage tube (2), a plurality of elastic telescopic rods (4) are fixedly connected between the lifting plate (3) and the base plate (1), a insertion tube (5) is fixedly connected to the upper side wall of the lifting plate (3), the lower end of the insertion tube (5) extends out of the lifting plate (3) and communicates with the telescopic drainage tube (2), and a drainage tube (6) is inserted into the insertion tube (5), characterized in that, Also includes: The insertion end mechanism (7) is connected to the upper end of the drainage tube (6) and is used for the delivery and drainage of flushing fluid; The blocking component (17) is set on the upper side wall of the base plate (1) and can automatically block the drainage tube (6). The adsorption component (22) is located on the outside of the insertion end mechanism (7) to prevent leakage of the drainage fluid and to fix the insertion end mechanism (7).

2. The intestinal fistula irrigation and drainage device according to claim 1, characterized in that, The insertion end mechanism (7) includes an insertion head (71) fixedly connected to the upper end of the drainage tube (6). The side wall of the insertion head (71) is provided with multiple drainage ports (72), which are distributed in a ring on the side wall of the insertion head (71). An annular cavity (8) is provided inside the insertion head (71), which is located above the drainage ports (72). The side wall of the annular cavity (8) is provided with multiple cleaning ports (9). The lower side wall of the annular cavity (8) is fixedly connected to a flushing tube (10). The lower end of the flushing tube (10) extends out of the insertion head (71) and is connected to an external pump assembly. A sealing backflushing assembly (11) is provided inside the insertion head (71).

3. The intestinal fistula irrigation and drainage device according to claim 2, characterized in that, The sealing backflushing assembly (11) includes a sealing plate (111) fixedly connected to the inner wall of the insertion head (71). A micro geared motor (112) is fixedly connected to the upper side wall of the sealing plate (111). The output end of the micro geared motor (112) passes through the sealing plate (111) and is fixedly connected to a rotating plate (12). A plurality of sealing plates (13) are fixedly connected to the lower side wall of the rotating plate (12). The sealing plates (13) are in contact with the inner wall of the insertion head (71). A first control valve (14) is provided in the flushing pipe (10). A backflushing short pipe (15) is fixedly connected to the pipe wall of the flushing pipe (10). A second control valve (16) is provided in the backflushing short pipe (15).

4. The intestinal fistula irrigation and drainage device according to claim 3, characterized in that, The stop assembly (17) includes a support frame (171) fixedly connected to the upper side wall of the base plate (1). The support frame (171) has an inverted L-shaped structure. A stop frame (172) is fixedly connected to the upper end of the support frame (171). A miniature electric push rod (18) is fixedly connected to the side wall of the stop frame (172). The moving end of the miniature electric push rod (18) passes through the stop frame (172) and is fixedly connected to a pressing plate (19). A trigger switch (20) and a controller (21) are fixedly connected to the lower inner wall of the support frame (171). The trigger switch (20) and the controller (21) are electrically connected.

5. The intestinal fistula irrigation and drainage device according to claim 2, characterized in that, The adsorption assembly (22) includes an installation cylinder (221) sleeved on the outside of the insertion head (71). A flexible cover (222) is fixedly sleeved on the outer wall of the installation cylinder (221). The flexible cover (222) is a transparent structure. A sealing rubber ring (23) is fixedly connected to the inner wall of the installation cylinder (221). An adsorption ring (24) is fixedly connected to the upper side wall of the flexible cover (222). The adsorption ring (24) is made of rubber. An annular barrier plate (25) is fixedly connected to the inner wall of the adsorption ring (24). Multiple adsorption short tubes (26) are fixedly inserted into the side wall of the annular barrier plate (25). A suction cup (27) is fixedly connected to the upper end of the adsorption short tube (26). An air extraction tube (28) is fixedly connected to the outer wall of the adsorption ring (24). An air extraction assembly (29) is connected to the end of the air extraction tube (28) away from the adsorption ring (24).

6. The intestinal fistula irrigation and drainage device according to claim 5, characterized in that, The air extraction assembly (29) includes an air extraction cylinder (291) connected to an air extraction pipe (28). A threaded cylinder (292) is fixedly connected to the side wall of the air extraction cylinder (291) away from the air extraction pipe (28). A threaded rod (30) is threadedly connected inside the threaded cylinder (292). A piston plate (31) is rotatably connected to one end of the threaded rod (30) inside the threaded cylinder (292). A rotating plate (32) is fixedly connected to one end of the threaded rod (30) extending out of the air extraction cylinder (291).

7. The intestinal fistula irrigation and drainage device according to claim 1, characterized in that, A connecting frame (33) is fixedly connected to the upper side wall of the lifting plate (3), and a connecting ring (34) is fixedly connected to the upper end of the connecting frame (33). A laser flow rate sensor (35) is fixedly connected to the inner wall of the connecting ring (34), and the laser flow rate sensor (35) is electrically connected to the controller (21).

8. The intestinal fistula irrigation and drainage device according to claim 6, characterized in that, The side wall of the vacuum cylinder (291) is provided with a pressure relief hole (36), and the pressure relief hole (36) and the threaded cylinder (292) are located on the same side.

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