Self-protecting regulated surgical gastrointestinal decompression device

Abstract

The present application relates to the technical field of medical equipment, and provides a self-protection adjusting surgical gastrointestinal decompression device, which comprises a fixing seat, and a constant pressure structure is fixedly installed at the top end of the fixing seat. The constant pressure structure is provided, when the servo motor drives the rotating seat to rotate through the gearbox, the pressure wheel extrudes the rubber tube to deform, the water in the rubber tube flows, the water flow changes the air pressure in the first water tank and the second water tank, the pressure wheel and the rotating seat are rotationally connected, the rubber tube is prevented from deviating when the rotating seat rotates, the service life of the rubber tube is prolonged, the rotating speed of the rotating seat is adjusted through the gearbox, the flow speed of the water in the rubber tube is changed, the air pressure in the first water tank and the second water tank is constantly changed, the damage to the intestinal and gastric mucosa caused by unstable negative pressure is avoided, the function of the device to provide constant negative pressure is realized, and the safety of the surgical gastrointestinal decompression device during use is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to a self-protective and adjustable decompression device for surgical gastrointestinal tract. Background Art

[0002] With the continuous progress of society, the medical equipment industry has developed rapidly. In the process of surgical treatment, gastrointestinal decompression is a technique that uses the principles of negative pressure suction and siphoning to insert a gastric tube from the oral or nasal cavity to suck out the gas and liquid accumulated in the gastrointestinal tract. It can reduce the pressure and expansion of the gastrointestinal tract for patients with gastrointestinal obstruction, prevent the gastrointestinal contents from continuing to leak into the abdominal cavity through the rupture for patients with gastrointestinal perforation, and facilitate the healing of the anastomosis after gastrointestinal anastomosis. During gastrointestinal drainage, a constant and stable negative pressure is required to drain the gas and liquid inside the gastrointestinal tract. Therefore, a self-protective and adjustable surgical gastrointestinal decompression device is used.

[0003] To this end, the patent with authorization announcement number CN212679709U discloses a surgical gastrointestinal decompression device, including a driving motor and an air bag, a disc is installed at the end of the output shaft of the driving motor, the disc rotates to connect one end of the pull rod, and a push plate is installed at the top of the air bag, and a first one-way valve is installed on one side of the top of the air bag, the bottom of the frame is threadedly connected to the opening at the top of the liquid storage bottle, a liquid inlet is welded on one side of the liquid storage bottle, a pressure relief head is threadedly installed at the end of the liquid inlet, and the outer end of the pressure relief head is connected to one end of the disposable pipette. The utility model uses a spring to maintain the internal pressure of the shell at a constant negative pressure, and the push plug plate is tightly fitted with the air hole, and the ventilation cavity is closed with the inside of the shell. When the internal pressure of the shell exceeds the rated negative pressure condition, the external atmospheric pressure pushes the push plug plate and the air hole to separate, so that the internal pressure of the shell and the disposable pipette is quickly restored to the rated value, thereby avoiding damage to the gastrointestinal lining tissue due to excessive negative pressure inside the disposable pipette, thereby improving the safety of use;

[0004] The above-mentioned Chinese and Western surgical gastrointestinal decompression device uses a driving motor to drive the disc to rotate. The rotation of the disc is connected to one end of the pull rod. The rotation of the disc drives one end to perform eccentric motion. The eccentric motion of one end of the pull rod drives the other end to move up and down, driving the push plate to move up and down. The push plate is installed on the top of the airbag. The push plate moves up and down to squeeze or reset the airbag. The reciprocating squeezing of the airbag maintains a stable negative pressure environment inside the liquid storage bottle. The stability is good, and the pressure inside the liquid storage bottle is stable. It is easy to control the reciprocating speed of the airbag squeezing by controlling the rotation speed of the disc. However, during the reciprocating squeezing process of the airbag, negative pressure will only be generated when it is reset. During compression, the negative pressure in the pipette will disappear, and it will not work normally. In addition, the negative pressure generated when the airbag is reset is not constant, which can easily cause the pipette to damage the gastrointestinal lining tissue, making it unsafe when used. Summary of the Invention

[0005] The purpose of the present invention is to provide a self-protective and adjustable decompression device for surgical gastrointestinal tract to solve the defect that the existing decompression device for surgical gastrointestinal tract cannot continuously provide a constant negative pressure.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a self-protective and adjustable surgical gastrointestinal decompression device, comprising a fixing seat;

[0007] The top of the fixed seat is fixedly installed with a constant pressure structure, and the constant pressure structure includes a limit seat, a mounting seat, a rotating seat, a pressure wheel, a gearbox, a servo motor and a rubber tube. The limit seat is fixedly installed on the top of the fixed seat by bolts, and the top of the limit seat is fixedly installed with the mounting seat by bolts. The gearbox is fixedly installed at the middle position of the top of the mounting seat, and the servo motor is fixedly installed on the top of the gearbox. A rotating seat is provided inside the limit seat, and both ends of the rotating seat are rotatably connected to the pressure wheel. A rubber tube is provided inside the limit seat outside the pressure wheel, and one end of the rubber tube extends to the outside of the limit seat and is fixedly installed with a first water tank, and the other end of the rubber tube extends to the outside of the limit seat and is fixedly installed with a second water tank;

[0008] A water inlet pipe is fixed on one side of the top of the first water tank, and a pressure relief structure is fixed on the top of both the first water tank and the second water tank;

[0009] A filtering structure is fixed on one side of the pressure relief structure, and a collecting bottle is provided on the side of the second water tank away from the fixing seat. The top of the collecting bottle is sealed with a rubber plug, and a liquid inlet pipe and an exhaust pipe are respectively passed through the two sides of the rubber plug.

[0010] Preferably, the end of the limiting seat away from the first water tank is in an arc shape, and the rubber tube is in a "U" shape inside the limiting seat.

[0011] Preferably, the output end of the servo motor is fixedly connected to the input end of the gearbox, and the output end of the gearbox is fixedly connected to the middle position of the top end of the rotating seat.

[0012] Preferably, one end of the rubber tube is connected to the bottom of the first water tank, and the other end of the rubber tube is connected to the bottom of the second water tank.

[0013] Preferably, the pressure relief structure includes a steering tube, a cover plate, a ventilation pipe, a connecting seat, an exhaust groove, a limiting ring and a connecting hole. One end of the steering tube is fixedly connected to the top of the first water tank, and the other end of the steering tube is fixedly connected to the top of the second water tank. A cover plate is provided on one side at the middle position of the steering tube, and connecting seats are fixed to the outer walls of the steering tubes on both sides of the cover plate. A ventilation pipe is provided inside the steering tube on one side of the cover plate, and limiting rings are fixed inside the steering tubes at both ends of the cover plate. A connecting hole is provided inside the steering tube at the middle position away from the cover plate, and exhaust grooves are provided on both sides of the connecting hole inside the steering tube.

[0014] Preferably, the two sides of the cover plate are fixedly connected to the connecting seat by bolts, a guide block is fixed on the inner wall side of the cover plate, a guide groove is provided on the side of the ventilation pipe close to the guide block, one-way valves are fixedly installed at both ends of the ventilation pipe, and exhaust holes are provided at both ends of the ventilation pipe close to the connecting hole.

[0015] Preferably, the ventilation pipe and the guide block form a sliding structure through the guide groove, and the length of the ventilation pipe is smaller than the distance between the two groups of exhaust grooves.

[0016] Preferably, the filtering structure includes a filter tube, an end cover and a connecting tube. The filter tube is arranged on one side of the steering tube, and end covers are provided on the outside of both ends of the filter tube. A sealing ring is provided at one end of the filter tube inside the end cover. A connecting tube is fixed on one side of the end cover at one end of the filter tube, and one side of the end cover at the other end of the filter tube is fixedly connected to one end of the exhaust pipe.

[0017] Preferably, the filter tube and the end cover are snap-connected, one end of the connecting tube is fixedly connected to the outer wall of the steering tube outside the connecting hole, and a filter element is placed inside the filter tube.

[0018] Preferably, valves are installed inside the liquid inlet pipe and the exhaust pipe outside the rubber stopper, and the lowest point of the liquid inlet pipe inside the collecting bottle is located below the lowest point of the exhaust pipe.

[0019] The present invention provides a self-protective and adjustable surgical gastrointestinal decompression device, which has the following advantages:

[0020] By providing a constant pressure structure, when the servo motor drives the rotating seat to rotate through the gearbox, under the limiting action of the limit seat, the pressure wheel squeezes the rubber tube to cause deformation, causing the water inside the rubber tube to flow, and the water flow will drive the air pressure inside the first water tank and the second water tank to change. The pressure wheel and the rotating seat are rotatably connected, avoiding the rubber tube from deviating as the rotating seat rotates, thereby extending the service life of the rubber tube. The rotation speed of the rotating seat is adjusted by the gearbox to change the flow rate of the water inside the rubber tube, thereby causing the air pressure inside the first water tank and the second water tank to change constantly, avoiding the damage of the gastrointestinal lining tissue caused by unstable negative pressure, realizing the function of the device to provide constant negative pressure, thereby improving the safety of the surgical gastrointestinal tract decompression device when in use;

[0021] Furthermore, the air pressure inside the first water tank and the second water tank changes, which will cause an air pressure difference at both ends of the steering tube. The one-way valve at the end with higher pressure is closed, and the one-way valve at the end with lower pressure is opened. Under the push of the air pressure, the ventilation tube will move inside the steering tube. Under the guidance of the guide block, the ventilation tube is prevented from rotating inside the steering tube. When one end of the ventilation tube collides with one end of the limit ring, the exhaust hole is connected to the connecting hole. At this time, the end with higher pressure is depressurized through the exhaust groove, while the end with lower pressure is connected to the connecting tube through the connecting hole. The pressure inside the collecting bottle is reduced through the exhaust pipe, thereby causing the pipette to start working. After the servo motor turns, the ventilation tube moves in the opposite direction, while the pipette still works normally, realizing the function of facilitating the adjustment of the pressure relief direction of the device, thereby improving the working efficiency of the surgical gastrointestinal decompression device when in use.

[0022] Furthermore, the filter element is placed inside the filter tube, and the odor inside the collection bottle enters the filter tube through the exhaust pipe and is purified by the filter element, avoiding the odor from polluting the environment, thereby improving the applicability of the surgical gastrointestinal decompression device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view schematic diagram of the present invention;

[0024] Figure 2 It is a bottom view schematic diagram of the present invention;

[0025] Figure 3 It is a side view schematic diagram of the constant pressure structure of the present invention;

[0026] Figure 4 This is a schematic exploded view of the constant pressure structure of the present invention;

[0027] Figure 5 This is a bottom-up exploded schematic diagram of the constant pressure structure of the present invention;

[0028] Figure 6 It is a side cross-sectional schematic diagram of the present invention;

[0029] Figure 7 This is a schematic exploded view of the pressure relief structure of the present invention;

[0030] Figure 8 It is a side exploded schematic diagram of the pressure relief structure of the present invention;

[0031] Figure 9 It is a schematic diagram of a top-view cross-section explosion of the pressure relief structure of the present invention;

[0032] Figure 10 It is a schematic diagram of the main cross-section of the filtering structure of the present invention.

[0033] Explanation of the reference numerals in the figure: 1. Fixed seat; 2. Constant pressure structure; 21. Limit seat; 22. Mounting seat; 23. Rotating seat; 24. Pressure wheel; 25. Gearbox; 26. Servo motor; 27. Rubber tube; 3. First water tank; 31. Water inlet pipe; 4. Pressure relief structure; 41. Steering pipe; 42. Cover plate; 421. Guide block; 43. Ventilation pipe; 431. Guide groove; 432. One-way valve; 433. Exhaust hole; 44. Connecting seat; 45. Exhaust groove; 46. Limiting ring; 47. Connecting hole; 5. Filter structure; 51. Filter tube; 52. End cover; 521. Sealing ring; 53. Connecting pipe; 6. Collecting bottle; 61. Rubber stopper; 62. Liquid inlet pipe; 63. Exhaust pipe; 7. Second water tank. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] See also Figures 1-10 The present invention provides a self-protective and adjustable surgical gastrointestinal decompression device, which includes a fixing seat 1.

[0036] Reference Figure 1-Figure 5As shown, a constant pressure structure 2 is fixedly installed on the top of the fixed seat 1. The constant pressure structure 2 includes a limit seat 21, a mounting seat 22, a rotating seat 23, a pressure wheel 24, a gearbox 25, a servo motor 26 and a rubber tube 27. The limit seat 21 is fixedly installed on the top of the fixed seat 1 by bolts. The top of the limit seat 21 is fixedly installed with a mounting seat 22 by bolts. A gearbox 25 is fixedly installed at the middle position of the top of the mounting seat 22. A servo motor 26 is fixedly installed on the top of the gearbox 25. A rotating seat 23 is provided inside the limit seat 21. Both ends of the movable seat 23 are rotatably connected to the pressure wheel 24, and a rubber tube 27 is provided inside the limit seat 21 outside the pressure wheel 24. The end of the limit seat 21 away from the first water tank 3 is in an arc shape, and the rubber tube 27 is in a "U" shape inside the limit seat 21. The output end of the servo motor 26 is fixedly connected to the input end of the gearbox 25, and the output end of the gearbox 25 is fixedly connected to the middle position of the top of the rotating seat 23. One end of the rubber tube 27 is connected to the bottom of the first water tank 3, and the other end of the rubber tube 27 is connected to the bottom of the second water tank 7.

[0037] An external power supply is connected to the water supply pipe 31 to store water in the first water tank 3. After the water is stored, the valve inside the water supply pipe 31 is closed to make the first water tank 3 in a sealed state. One end of the suction tube is fixedly connected to one end of the liquid inlet pipe 62, and the servo motor 26 is started. The servo motor 26 will drive the rotating seat 23 to rotate through the gearbox 25. The rotating seat 23 will drive the pressure wheel 24 to move inside the rubber tube 27. Under the action of the limit seat 21, the pressure wheel 24 will squeeze the rubber tube 27 to deform, causing the water inside the rubber tube 27 to flow. The first water tank 3 and the second water tank 7 are in a sealed state. When the water inside the first water tank 3 enters the second water tank 7 through the rubber tube 27, the air pressure inside the first water tank 3 will decrease, while the air pressure inside the second water tank 7 will increase. The rotation speed of the rotating seat 23 is controlled by the gearbox 25 to make the water flow speed inside the rubber tube 27 constant, thereby making the air pressure inside the first water tank 3 and the second water tank 7 change stably.

[0038] Reference Figure 1 and Figure 6-Figure 9As shown, one end of the rubber tube 27 extends to the outside of the limit seat 21 and is fixedly installed with the first water tank 3, and the other end of the rubber tube 27 extends to the outside of the limit seat 21 and is fixedly installed with the second water tank 7. A water inlet pipe 31 is fixed on one side of the top of the first water tank 3, and the tops of the first water tank 3 and the second water tank 7 are both fixed with a pressure relief structure 4. The pressure relief structure 4 includes a steering tube 41, a cover plate 42, a ventilation pipe 43, a connecting seat 44, an exhaust groove 45, a limiting ring 46 and a connecting hole 47. One end of the steering tube 41 is fixedly connected to the top of the first water tank 3, and the other end of the steering tube 41 is fixedly connected to the top of the second water tank 7. A cover plate 42 is provided on one side of the middle position of the steering tube 41, and a connecting seat 44 is fixed to the outer wall of the steering tube 41 on both sides of the cover plate 42. A ventilation pipe 43 is provided inside, and limiting rings 46 are fixed inside the steering pipe 41 at both ends of the cover plate 42. A connecting hole 47 is provided at the middle position of the steering pipe 41 away from the cover plate 42. Exhaust grooves 45 are provided on both sides of the connecting hole 47 in the steering pipe 41. The two sides of the cover plate 42 are fixedly connected to the connecting seat 44 by bolts. A guide block 421 is fixed on the inner wall side of the cover plate 42, and a guide groove 431 is provided on the side of the ventilation pipe 43 close to the guide block 421. Check valves 432 are fixedly installed at both ends of the ventilation pipe 43, and exhaust holes 433 are provided at both ends of the ventilation pipe 43 close to the connecting hole 47. The ventilation pipe 43 and the guide block 421 form a sliding structure through the guide groove 431, and the length of the ventilation pipe 43 is less than the distance between the two groups of exhaust grooves 45.

[0039] When water enters the second water tank 7 from the inside of the first water tank 3 through the rubber tube 27, the air pressure inside the second water tank 7 will increase, causing the air pressure at the end of the steering tube 41 close to the second water tank 7 to increase. At this time, the one-way valve 432 inside the ventilation tube 43 close to the end of the second water tank 7 is closed. Under the push of the gas, the ventilation tube 43 will move to the side of the first water tank 3 inside the steering tube 41. Under the guidance of the guide block 421, the ventilation tube 43 is prevented from rotating inside the steering tube 41. At the same time, the air pressure inside the first water tank 3 will decrease, causing the air pressure at the end of the steering tube 41 close to the first water tank 3 to decrease. At this time, the one-way valve 432 inside the ventilation tube 43 close to the end of the first water tank 3 is opened. When the end of 43 close to the first water tank 3 conflicts with the limit ring 46, the exhaust hole 433 on the side of the ventilation pipe 43 close to the second water tank 7 is connected to the connecting hole 47, and the exhaust groove 45 on the side of the steering pipe 41 close to the second water tank 7 is connected to the second water tank 7 through the steering pipe 41. The gas inside the second water tank 7 will be depressurized through the exhaust groove 45, and the first water tank 3 is connected to the connecting pipe 53 through the exhaust hole 433 and the connecting hole 47. Under the action of the exhaust pipe 63, the pressure inside the collecting bottle 6 is reduced, and the pipette starts to work. When the servo motor 26 turns, the ventilation pipe 43 moves in the opposite direction, so that the inside of the collecting bottle 6 is always in a constant negative pressure state, thereby keeping the pipette working normally.

[0040] Reference Figure 1 and Figure 10 As shown, a filter structure 5 is fixed on one side of the pressure relief structure 4. The filter structure 5 includes a filter tube 51, an end cover 52 and a connecting tube 53. The filter tube 51 is arranged on one side of the steering tube 41. The outer sides of both ends of the filter tube 51 are provided with end covers 52. One end of the filter tube 51 inside the end cover 52 is provided with a sealing ring 521. One side of the end cover 52 at one end of the filter tube 51 is fixed with a connecting tube 53. One side of the end cover 52 at the other end of the filter tube 51 is fixedly connected to one end of the exhaust pipe 63. The filter tube 51 and the end cover 52 are engaged. Connection, one end of the connecting pipe 53 is fixedly connected to the outer wall of the steering tube 41 outside the connecting hole 47, a filter element is placed inside the filter tube 51, and a collecting bottle 6 is provided on the side of the second water tank 7 away from the fixed seat 1. The top of the collecting bottle 6 is sealed with a rubber plug 61, and the two sides of the rubber plug 61 are respectively penetrated by a liquid inlet pipe 62 and an exhaust pipe 63. Valves are installed inside the liquid inlet pipe 62 and the exhaust pipe 63 outside the rubber plug 61, and the lowest point of the liquid inlet pipe 62 inside the collecting bottle 6 is located below the lowest point of the exhaust pipe 63.

[0041] Place the filter element into the interior of the filter tube 51, and then clamp the end caps 52 on both ends of the filter tube 51. The sealing performance of the connection between the filter tube 51 and the end caps 52 is enhanced by the sealing ring 521. The interior of the filter tube 51 is in a negative pressure state, so that the end caps 52 are firmly fixed on both ends of the filter tube 51. The pipette sucks out the gas and liquid accumulated in the gastrointestinal tract through the liquid inlet pipe 62 into the interior of the collecting bottle 6. The odor inside the collecting bottle 6 will be purified by the filter element when passing through the filter tube 51, effectively preventing the odor from being discharged. When replacing the collecting bottle 6, close the valves of the liquid inlet pipe 62 and the exhaust pipe 63 to avoid the spread of odor.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-protective and adjustable gastrointestinal decompression device for surgery, comprising a fixing seat (1); Its characteristics are: The top of the fixed seat (1) is fixedly mounted with a constant pressure structure (2), and the constant pressure structure (2) comprises a limiting seat (21), a mounting seat (22), a rotating seat (23), a pressure wheel (24), a gearbox (25), a servo motor (26) and a rubber tube (27). The limiting seat (21) is fixedly mounted on the top of the fixed seat (1) by means of bolts, and the top of the limiting seat (21) is fixedly mounted with a mounting seat (22) by means of bolts. The gearbox (25) is fixedly mounted at the middle position of the top of the mounting seat (22). A servo motor (26) is fixedly installed on the top of the speed box (25), a rotating seat (23) is provided inside the limiting seat (21), and both ends of the rotating seat (23) are rotatably connected to a pressure wheel (24), and a rubber tube (27) is provided inside the limiting seat (21) outside the pressure wheel (24), one end of the rubber tube (27) extends to the outside of the limiting seat (21) and is fixedly installed with a first water tank (3), and the other end of the rubber tube (27) extends to the outside of the limiting seat (21) and is fixedly installed with a second water tank (7); A water inlet pipe (31) is fixed on one side of the top of the first water tank (3), and a pressure relief structure (4) is fixed on the top of each of the first water tank (3) and the second water tank (7). The pressure relief structure (4) comprises a steering tube (41), a cover plate (42), a ventilation tube (43), a connecting seat (44), an exhaust groove (45), a limiting ring (46) and a connecting hole (47). One end of the steering tube (41) is fixedly connected to the top of the first water tank (3), and the other end of the steering tube (41) is fixedly connected to the top of the second water tank (7). 1) A cover plate (42) is provided on one side at the middle position, and connecting seats (44) are fixed to the outer side walls of the steering tubes (41) on both sides of the cover plate (42), and a ventilation pipe (43) is provided inside the steering tube (41) on one side of the cover plate (42), and limiting rings (46) are fixed inside the steering tubes (41) at both ends of the cover plate (42), and a connecting hole (47) is provided inside the steering tube (41) at the middle position away from the side of the cover plate (42), and exhaust grooves (45) are provided on both sides of the connecting hole (47) inside the steering tube (41); A filter structure (5) is fixed on one side of the pressure relief structure (4); a collecting bottle (6) is provided on the side of the second water tank (7) away from the fixing seat (1); a rubber plug (61) is sealed and clamped on the top of the collecting bottle (6); and a liquid inlet pipe (62) and an exhaust pipe (63) are respectively passed through the two sides of the interior of the rubber plug (61).

2. A self-protective and adjustable surgical gastrointestinal decompression device according to claim 1, characterized in that: The end of the limiting seat (21) away from the first water tank (3) is in an arc shape, and the rubber tube (27) is in a "U" shape inside the limiting seat (21).

3. The self-protective and adjustable surgical gastrointestinal decompression device according to claim 1, characterized in that: The output end of the servo motor (26) is fixedly connected to the input end of the gearbox (25), and the output end of the gearbox (25) is fixedly connected to the middle position of the top end of the rotating seat (23).

4. The self-protective and adjustable gastrointestinal decompression device according to claim 1, characterized in that: One end of the rubber tube (27) is connected to the bottom of the first water tank (3), and the other end of the rubber tube (27) is connected to the bottom of the second water tank (7).

5. The self-protective and adjustable surgical gastrointestinal decompression device according to claim 1, characterized in that: Both sides of the cover plate (42) are fixedly connected to the connecting seat (44) by bolts. A guide block (421) is fixed on the inner wall side of the cover plate (42). A guide groove (431) is provided on the side of the ventilation pipe (43) close to the guide block (421). One-way valves (432) are fixedly installed at both ends of the ventilation pipe (43). Exhaust holes (433) are provided at both ends of the ventilation pipe (43) close to the connecting hole (47).

6. The self-protective and adjustable surgical gastrointestinal decompression device according to claim 5, characterized in that: The ventilation pipe (43) and the guide block (421) form a sliding structure through the guide groove (431), and the length of the ventilation pipe (43) is smaller than the distance between the two groups of exhaust grooves (45).

7. The self-protective and adjustable surgical gastrointestinal decompression device according to claim 1, characterized in that: The filtering structure (5) comprises a filter tube (51), an end cap (52) and a connecting tube (53); the filter tube (51) is arranged on one side of the steering tube (41); the outer sides of both ends of the filter tube (51) are provided with end caps (52); one end of the filter tube (51) inside the end caps (52) is provided with a sealing ring (521); one side of the end cap (52) at one end of the filter tube (51) is fixed with the connecting tube (53); one side of the end cap (52) at the other end of the filter tube (51) is fixedly connected to one end of the exhaust pipe (63).

8. The self-protective and adjustable surgical gastrointestinal decompression device according to claim 7, characterized in that: The filter tube (51) and the end cover (52) are snap-fitted and connected, one end of the connecting tube (53) is fixedly connected to the outer wall of the steering tube (41) outside the connecting hole (47), and a filter element is placed inside the filter tube (51).

9. The self-protective and adjustable surgical gastrointestinal decompression device according to claim 1, characterized in that: Valves are installed inside the liquid inlet pipe (62) and the exhaust pipe (63) outside the rubber stopper (61), and the lowest point of the liquid inlet pipe (62) inside the collecting bottle (6) is located below the lowest point of the exhaust pipe (63).

Images