An anti-reflux cannula with an airbag for gastroscopy treatment

Abstract

The present invention belongs to the technical field of food processing equipment, and particularly relates to an anti-reflux sleeve with an airbag for gastroscope treatment, which includes a sleeve assembly. The sleeve assembly includes a gastroscope sleeve, and a plurality of sliding adjustment grooves are evenly formed on the outer side of one end of the gastroscope sleeve; a sliding airbag assembly is installed on the outer side of the plurality of sliding adjustment grooves. The sliding airbag assembly includes a first sliding block, the first sliding block is slidably installed at one end of the sliding adjustment groove, and a first connecting rod arm is rotatably connected to the top of the first sliding block. The present invention adopts an anti-reflux airbag capable of changing the expansion diameter. Under normal conditions, it only slightly presses the inner wall of the esophageal inlet. When reflux occurs, the anti-reflux airbag can be pushed to expand by the upwelling of gastric gas, temporarily completely blocking the esophageal inlet to avoid reflux. After the reflux ends, the contracted esophagus can push the anti-reflux airbag to reset, and a good anti-reflux effect can be achieved without continuously squeezing the esophageal inlet with high inflation.

Description

Technical Field

[0001] The present invention belongs to the technical field of food processing equipment, and particularly relates to an airbag anti-reflux sleeve for gastroscopy treatment. Background Art

[0002] Gastroscopy treatment is a common endoscopic surgery for diagnosing and treating gastric diseases. However, during the gastroscopy treatment, patients often experience reflux, that is, gastric contents flow back into the esophagus, causing discomfort and complications. To avoid and reduce such phenomena, patients are generally required to fast and refrain from drinking water before gastroscopy treatment. Even so, there is still a probability that the gastric juice secreted by the patient's stomach will reflux. Therefore, an airbag anti-reflux sleeve is also needed during gastroscopy treatment to prevent gastric juice reflux;

[0003] The existing airbag anti-reflux sleeves generally have an inflatable airbag arranged at the front of the sleeve. After the sleeve is inserted into the esophageal inlet of the patient, the inflatable airbag is inflated. However, during the reflux process, gastric air and gastric juice surge upward simultaneously, squeezing the esophagus and causing the esophagus to expand. If the inflation amplitude of the inflatable airbag is too small, the expanded esophagus and the airbag will not fit completely, resulting in gastric juice flowing out through the gap between the esophagus and the airbag. If the inflation amplitude of the inflatable airbag is too large, the esophagus will continue to be expanded, causing damage to the esophagus. Summary of the Invention

[0004] The purpose of the present invention is to provide an airbag anti-reflux sleeve for gastroscopy treatment, which adopts an anti-reflux airbag that can change the expansion diameter. Under normal conditions, it only slightly squeezes the inner wall of the esophageal inlet. When reflux occurs, the anti-reflux airbag can be expanded by the upward surge of gastric gas, temporarily completely blocking the esophageal inlet to avoid reflux. After the reflux ends, the contracted esophagus can push the anti-reflux airbag to reset, achieving a good anti-reflux effect without the need for continuous high inflation to squeeze the esophageal inlet.

[0005] The technical solution adopted by the present invention is specifically as follows:

[0006] An airbag anti-reflux sleeve for gastroscopy treatment, comprising a sleeve assembly, the sleeve assembly includes a gastroscope sleeve, and a plurality of sliding adjustment grooves are uniformly opened on the outer side of one end of the gastroscope sleeve;

[0007] A sliding airbag assembly, the sliding airbag assembly is installed outside a plurality of sliding adjustment grooves, the sliding airbag assembly includes a first sliding block, the first sliding block is slidably installed at one end of the sliding adjustment groove, the top of the first sliding block is rotatably connected to a first connecting rod arm, and the other end inside the sliding adjustment groove is rotatably connected to a second connecting rod arm. An anti-reflux airbag is fixed between the first connecting rod arm and the second connecting rod arm;

[0008] An airbag adjustment component, which is installed at the other end of the gastroscope sleeve, and is used to control the movement of the first sliding block to change the diameter of the anti-reflux airbag;

[0009] An inflation component, which includes an expansion airbag connected to the anti-reflux airbag, and is used to control the inflation and deflation of the anti-reflux airbag.

[0010] In a preferred solution, the airbag adjustment component includes a sliding sleeve. An annular limiting sliding groove is provided at the other end of the gastroscope sleeve. One end of the sliding sleeve is slidably arranged inside the annular limiting sliding groove. A plurality of connecting wire bundles are fixed at one end of the sliding sleeve. A wire pulling channel is provided at a position corresponding to each sliding adjustment groove inside the gastroscope sleeve. The connecting wire bundles penetrate through the wire pulling channels, and one end of the connecting wire bundles is fixed to the first sliding block.

[0011] In a preferred solution, a guiding limiting sliding groove is provided on the outer side of one end of the sliding sleeve. A guiding column that fits with the guiding limiting sliding groove is provided on the inner wall of the annular limiting sliding groove. A first threaded adjustment knob is threadedly connected to the outer side of the other end of the sliding sleeve. One end of the first threaded adjustment knob is rotatably connected to the inflation component.

[0012] In a preferred solution, a second sliding block is slidably connected to the outer side of the gastroscope sleeve and at the middle of the sliding adjustment groove. The top of the second sliding block is fixed to the inner side of the anti-reflux airbag. A through hole is provided in the middle of the second sliding block. The connecting wire bundle passes through the through hole and is connected to the first sliding block. An elastic member is provided between the first sliding block and the second sliding block and on the outer side of the connecting wire bundle.

[0013] In a preferred solution, the expansion airbag is provided on the outer side of the other end of the gastroscope sleeve. A plurality of inflation pipelines are evenly arranged inside the gastroscope sleeve. One end of the inflation pipeline is connected to the inner side of the expansion airbag. The other end of the inflation pipeline is connected to the second connecting rod arm. The inside of the second connecting rod arm is hollow, and the inside of the second connecting rod arm is communicated with the anti-reflux airbag.

[0014] In a preferred solution, the inflation component further includes a second limiting tab, which is fixed to the outer side of the other end of the gastroscope sleeve. An annular rotating convex block is provided on one side of the second limiting tab. The annular rotating convex block is installed on one side of the first threaded adjustment knob, and the first threaded adjustment knob is rotatably connected to the second limiting tab.

[0015] In a preferred embodiment, the inflation assembly further includes a first limiting flap, which is fixed to the outer side of the gastroscope sleeve. The expansion airbag is arranged between the first limiting flap and the second limiting flap. A second threaded adjustment knob is also arranged between the first limiting flap and the second limiting flap, and one end of the second threaded adjustment knob is in contact with the expansion airbag.

[0016] In a preferred embodiment, the outer surface of the gastroscope sleeve is provided with threads at the position where the second threaded adjustment knob is installed, and the second threaded adjustment knob is threadedly connected to the gastroscope sleeve.

[0017] In a preferred embodiment, a bite outer sleeve is slidably arranged on the outer side of the gastroscope sleeve.

[0018] In a preferred embodiment, a front-end protective collar is fixed to one end of the gastroscope sleeve.

[0019] The technical effects achieved by the present invention are as follows:

[0020] By using the sliding airbag assembly in cooperation with the airbag adjustment assembly, the present invention can change the expansion diameter of the anti-reflux airbag. By rotating the first threaded adjustment knob to drive the sliding sleeve to move, the connection wire harness can be pulled to drive the first sliding block to slide. The sliding of the first sliding block will change the included angle between the second connecting rod arm and the first connecting rod arm, thereby expanding the anti-reflux airbag outward and changing the diameter of the anti-reflux airbag, achieving the effect of adjusting the anti-reflux airbag with different diameters according to different patients.

[0021] By providing a movable and slidable first sliding block, and during the sliding process of the first sliding block, the diameter of the anti-reflux airbag can be changed. When gastric juice reflux occurs, the air in the stomach impacts the anti-reflux airbag, causing the anti-reflux airbag to move towards the esophageal segment. At the same time, the first sliding block slides, reducing the included angle between the first connecting rod arm and the second connecting rod arm, expanding the diameter of the anti-reflux airbag, making it fit more closely with the inner wall of the esophagus, avoiding the outflow of gastric juice, and after the reflux ends, the anti-reflux airbag is reset by the push of the elastic member and the contraction of the inner wall of the esophagus. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of one side of the present invention;

[0023] Figure 2 is a schematic structural diagram of the other side of the present invention;

[0024] Figure 3 is a schematic connection structural diagram of the sleeve assembly and the sliding airbag assembly of the present invention;

[0025] Figure 4 is a schematic connection structural diagram of the sleeve assembly and the airbag adjustment assembly of the present invention;

[0026] Figure 5 is an exploded view of the partial structure of the present invention;

[0027] Figure 6 is a schematic sectional view of the structure of the present invention.

[0028] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. Sleeve assembly; 2. Sliding airbag assembly; 3. Airbag adjustment assembly; 4. Inflation assembly; 11. Gastroscope sleeve; 12. Front-end protective ferrule; 13. Sliding adjustment groove; 14. Biting outer sleeve; 15. Cable channel; 16. Inflation pipeline; 17. Annular limiting sliding groove; 21. First sliding block; 22. First connecting rod arm; 23. Anti-reflux airbag; 24. Second sliding block; 25. Second connecting rod arm; 26. Elastic member; 31. Sliding sleeve; 32. First thread adjustment knob; 33. Connection wire harness; 41. First limiting stop; 42. Second limiting stop; 43. Second thread adjustment knob; 44. Inflatable airbag. Detailed implementation manners

[0030] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the drawings of the specification.

[0031] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0032] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The "in a preferred implementation manner" that appears in different places in this specification does not all refer to the same embodiment, nor is it a separate or selectively exclusive embodiment with other embodiments.

[0033] Thirdly, the present invention is described in detail in conjunction with the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the sectional views showing the device structure will be enlarged locally not in accordance with the general ratio, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0034] Please refer to the attached Figures 1 to 6As shown in the figure, a balloon anti-reflux sleeve for gastroscopy treatment includes a sleeve assembly 1. The sleeve assembly 1 includes a gastroscope sleeve 11. A plurality of sliding adjustment grooves 13 are evenly formed on the outer side of one end of the gastroscope sleeve 11. A bite outer sleeve 14 is slidably arranged on the outer side of the gastroscope sleeve 11. The bite outer sleeve 14 is made of flexible plastic. A front-end protective collar 12 is fixed at one end of the gastroscope sleeve 11.

[0035] The gastroscope sleeve 11 serves as a sleeve for the gastroscope tube to guide the gastroscope through the patient's esophagus into the stomach. At the same time, the front-end protective collar 12 provided at one end of the gastroscope sleeve 11 can play a role in contacting the patient's esophagus during the process of the gastroscope sleeve 11 entering the patient's esophagus. And the front-end protective collar 12 is made of flexible material, which can reduce the discomfort caused when inserting the gastroscope sleeve 11. After the insertion of the gastroscope sleeve 11 is completed, the bite outer sleeve 14 can be slid so that the patient's lip and tooth parts bite on the surface of the bite outer sleeve 14. And the bite outer sleeve 14 is also made of flexible material, which can avoid the teeth directly contacting the relatively hard gastroscope sleeve 11 and reduce the discomfort of the lip and tooth parts.

[0036] A sliding balloon assembly 2 is installed outside a plurality of sliding adjustment grooves 13. The sliding balloon assembly 2 includes a first sliding block 21. The first sliding block 21 is slidably installed at one end of the sliding adjustment groove 13. A first connecting rod arm 22 is rotatably connected to the top of the first sliding block 21. A second connecting rod arm 25 is rotatably connected to the other end inside the sliding adjustment groove 13. An anti-reflux balloon 23 is fixed between the first connecting rod arm 22 and the second connecting rod arm 25.

[0037] A balloon adjustment assembly 3 is installed at the other end of the gastroscope sleeve 11. The balloon adjustment assembly 3 is used to control the movement of the first sliding block 21 to change the diameter of the anti-reflux balloon 23.

[0038] An inflation assembly 4 includes an inflation balloon 44. The inflation balloon 44 is connected to the anti-reflux balloon 23. The inflation assembly 4 is used to control the inflation and deflation of the anti-reflux balloon 23.

[0039] In a preferred embodiment, please refer to Figure 4 , the balloon adjustment assembly 3 includes a sliding sleeve 31. An annular limit sliding groove 17 is provided at the other end of the gastroscope sleeve 11. One end of the sliding sleeve 31 is slidably arranged inside the annular limit sliding groove 17. A plurality of connecting wire bundles 33 are fixed at one end of the sliding sleeve 31. Inside the gastroscope sleeve 11 and at positions corresponding to each sliding adjustment groove 13, a wire pulling channel 15 is provided. The connecting wire bundles 33 penetrate through the wire pulling channel 15, and one end of the connecting wire bundles 33 is fixed to the first sliding block 21.

[0040] In this embodiment, the expansion diameter of the anti-reflux airbag 23 is controlled by controlling the sliding sleeve 31 to slide toward the end of the gastroscope sleeve 11 away from the front end protective ring 12. The sliding simultaneously drives the connecting harness 33 connected thereto to move, thereby pulling the first sliding block 21 connected to the connecting harness 33 to slide in the sliding adjustment groove 13, thereby reducing the angle between the first connecting arm 22 and the second connecting arm 25, pushing the anti-reflux airbag 23 to expand outward, and changing the diameter of the anti-reflux airbag 23.

[0041] Next, please refer to Figure 4 A guide limit slot is provided on the outer side of one end of the sliding sleeve 31, and a guide column is provided on the inner wall of the annular limit sliding slot 17 that fits with the guide limit slot. The outer side of the other end of the sliding sleeve 31 is threadedly connected to a first threaded adjustment knob 32, and one end of the first threaded adjustment knob 32 is rotatably connected to the inflation component 4.

[0042] In the above, the guide limit slot is used in conjunction with the guide column so that when the sliding sleeve 31 and the first thread adjustment knob 32 rotate, the sliding sleeve 31 cannot drive the first thread adjustment knob 32 to rotate together, but controls the first thread adjustment knob 32 to move to one end under the limit of the guide column and the push of the thread.

[0043] Secondly, please also refer to Figure 3 and Figure 6 A second sliding block 24 is slidably connected to the outside of the gastroscope sleeve 11 and located in the middle of the sliding adjustment groove 13. The top of the second sliding block 24 is fixed to the inner side of the anti-reflux airbag 23. A through hole is provided in the middle of the second sliding block 24. The connecting harness 33 passes through the through hole and is connected to the first sliding block 21. An elastic member 26 is provided between the first sliding block 21 and the second sliding block 24 and located on the outside of the connecting harness 33.

[0044] In the above description, the second sliding block 24 is arranged on the inner side of the anti-reflux airbag 23 and is slidably connected to the sliding adjustment groove 13. When the anti-reflux airbag 23 moves to expand its diameter, the second sliding block 24 moves along with it, which can play the role of sealing the sliding adjustment groove 13, thereby preventing the air and gastric juice in the stomach from leaking through the sliding adjustment groove 13 during the reflux process and entering the patient's mouth and airway. At the same time, after sealing, the refluxed air in the stomach impacts the anti-reflux airbag 23, which can also make the anti-reflux airbag 23 expand its diameter better, thereby avoiding the reflux phenomenon.

[0045] Further, a through hole is opened in the middle of the second sliding block 24 for the connecting wire harness 33 to move through, so as to avoid the setting of the second sliding block 24 affecting the control of the active expansion of the anti-reflux airbag 23. At the same time, the elastic member 26 provided between the second sliding block 24 and the first sliding block 21 can also provide a thrust force after the reflux ends to push the sliding sleeve 31 to reset, so that the diameter of the anti-reflux airbag 23 decreases and returns to the initially set diameter.

[0046] Further, please refer to Figure 5 and Figure 6 simultaneously. The inflatable airbag 44 is arranged outside the other end of the gastroscope sleeve 11. A plurality of inflation ducts 16 are evenly arranged inside the gastroscope sleeve 11. One end of each inflation duct 16 is connected to the inner side of the inflatable airbag 44, and the other end of each inflation duct 16 is connected to the second link arm 25. The inside of the second link arm 25 is hollow, and the inside of the second link arm 25 is communicated with the anti-reflux airbag 23.

[0047] In this embodiment, when the inflatable airbag 44 is squeezed, the gas inside it enters the inside of the second link arm 25 through the inflation duct 16 and then enters the inside of the anti-reflux airbag 23, causing the anti-reflux airbag 23 to expand. The second link arm 25 serves as a connecting component connecting the anti-reflux airbag 23 and the inflation duct 16. One end of the second link arm 25 where it is rotationally connected to the gastroscope sleeve 11 is connected to one end of the inflation duct 16, and the connection part is hermetically sealed to prevent gas leakage.

[0048] It should be noted that the second link arm 25 is of a hollow structure. Two rotating shafts are provided at the end of the second link arm 25 far from the anti-reflux airbag 23. One of the rotating shafts is hollow, and the two rotating shafts are rotationally connected to one end of the sliding adjustment groove 13. The hollow rotating shaft is located inside one end of the inflation duct 16. A sealing ring is also provided between the hollow rotating shaft and the inflation duct 16, and the hollow rotating shaft is rotationally connected to the inflation duct 16.

[0049] Please refer to Figure 6 again. The inflation assembly 4 further includes a second limit stop 42. The second limit stop 42 is fixed to the outside of the other end of the gastroscope sleeve 11. An annular rotating convex block is provided on one side surface of the second limit stop 42. The annular rotating convex block is installed on one side surface of the first threaded adjustment knob 32, and the first threaded adjustment knob 32 is rotationally connected to the second limit stop 42.

[0050] The annular rotating convex block provided on one side of the second limit stop 42 is used to connect with the first threaded adjustment knob 32 to keep the position of the first threaded adjustment knob 32 from moving during rotation. Thus, under the push of the thread, the sliding sleeve 31 can be pushed out.

[0051] Secondly, please refer to Figure 6 again. The inflation component 4 further includes a first limiting flap 41. The first limiting flap 41 is fixed on the outer side of the gastroscope sleeve 11. The expansion airbag 44 is arranged between the first limiting flap 41 and the second limiting flap 42. A second threaded adjustment knob 43 is also arranged between the first limiting flap 41 and the second limiting flap 42. One end of the second threaded adjustment knob 43 is in contact with the expansion airbag 44. Threads are provided on the outer surface of the gastroscope sleeve 11 at the position where the second threaded adjustment knob 43 is installed. The second threaded adjustment knob 43 is threadedly connected to the gastroscope sleeve 11.

[0052] In the above situation, during use, by rotating the second threaded adjustment knob 43, under the driving of the threaded connection, the second threaded adjustment knob 43 can move along one end of the sleeve assembly 1. While moving, it will squeeze the expansion airbag 44. At this time, the expansion airbag 44 is squeezed and shrunk, and the gas inside the expansion airbag 44 is transported to the anti-reflux airbag 23, causing the anti-reflux airbag 23 to expand. Moreover, the material of the expansion airbag 44 is elastic rubber material. When the second threaded adjustment knob 43 is adjusted back to its original position, the expansion airbag 44 can automatically expand and automatically draw back the gas located inside the anti-reflux airbag 23 into the expansion airbag 44. The provided first limiting flap 41 and the second limiting flap 42 are both used to limit the moving and deformation ranges of the second threaded adjustment knob 43 and the expansion airbag 44.

[0053] The working principle of the present invention is as follows: when in use, the sleeve assembly 1 is inserted into the patient's oral cavity, and the sliding airbag assembly 2 installed at the front end of the sleeve assembly 1 enters the patient's esophageal entrance. Then, the first threaded adjustment knob 32 is rotated to drive the sliding sleeve 31 to move toward the other end of the gastroscope sleeve 11. When the sliding sleeve 31 moves, the connecting harness 33 is moved together, and the first sliding block 21 is pulled to slide inside the sliding adjustment groove 13. The first sliding block 21 can push the first connecting arm 22 to rotate while sliding, and the rotation simultaneously causes the anti-reflux airbag 23 located between the first connecting arm 22 and the second connecting arm 25 to expand outward. When the anti-reflux airbag 23 is about to fit the inner wall of the patient's esophagus, it stops. Then, the second threaded adjustment knob 43 is rotated to squeeze the expansion airbag 44 to contract, and the gas inside the expansion airbag 44 enters the second connecting arm 25 through the inflation pipe 16, and then enters the anti-reflux airbag 2 3, so that the anti-reflux airbag 23 is inflated, completely contacts the inner wall of the patient's esophagus, and slightly squeezes the inner wall of the patient's esophagus. When the patient has reflux symptoms, the air and gastric fluid in the patient's stomach flow back, and the air impacts the anti-reflux airbag 23. Since the anti-reflux airbag 23 is in contact with the inner wall of the patient's esophagus, when the anti-reflux airbag 23 is pushed by the reflux gas, the first link arm 22 will slide inside the sliding adjustment groove 13, thereby making the anti-reflux airbag 23 expand outward, preventing the reflux liquid from squeezing the esophagus and causing the esophageal entrance to expand, so that gastric fluid can flow back into the patient's mouth or airway. After the reflux ends, the gastric fluid that has not flowed out flows back into the stomach, and the anti-reflux airbag 23, which has been squeezed and expanded by the gastric gas, returns to its original position under the action of the elastic member 26 pushing the first sliding block 21 to reset, avoiding long-term squeezing of the inner wall of the esophagus to cause high expansion and thus causing discomfort, which is safer and can also reduce damage to the patient's esophagus.

[0054] The foregoing is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A balloon anti-reflux cannula for gastroscopic treatment, characterized by: The sleeve assembly (1) includes a gastroscope sleeve (11), and a plurality of sliding adjustment grooves (13) are evenly provided on the outer side of one end of the gastroscope sleeve (11); A sliding airbag assembly (2), the sliding airbag assembly (2) being mounted on the outside of a plurality of sliding adjustment slots (13), the sliding airbag assembly (2) comprising a first sliding block (21), the first sliding block (21) being slidably mounted on one end of the sliding adjustment slot (13), the top of the first sliding block (21) being rotatably connected to a first link arm (22), the other end inside the sliding adjustment slot (13) being rotatably connected to a second link arm (25), an anti-reflux airbag (23) being fixed between the first link arm (22) and the second link arm (25); An airbag adjustment component (3), the airbag adjustment component (3) being mounted on the other end of the gastroscope sleeve (11), the airbag adjustment component (3) being used to control the movement of the first sliding block (21) to change the diameter of the anti-reflux airbag (23); The airbag adjustment component (3) includes a sliding sleeve (31), the other end of the gastroscope sleeve (11) is provided with an annular limiting sliding groove (17), one end of the sliding sleeve (31) is slidably arranged inside the annular limiting sliding groove (17), one end of the sliding sleeve (31) is fixed with a plurality of connecting wire harnesses (33), the inside of the gastroscope sleeve (11) and at a position corresponding to each sliding adjustment groove (13) are provided with a pull wire channel (15), the connecting wire harness (33) passes through the pull wire channel (15), and one end of the connecting wire harness (33) is fixed to the first sliding block (21); An inflation component (4), the inflation component (4) comprising an expansion airbag (44), the expansion airbag (44) being connected to the anti-reflux airbag (23), and the inflation component (4) being used to control the inflation and deflation of the anti-reflux airbag (23); The expansion air bag (44) is arranged on the outside of the other end of the gastroscope sleeve (11), and a plurality of inflation pipes (16) are evenly arranged inside the gastroscope sleeve (11). One end of the inflation pipe (16) is connected to the inner side of the expansion air bag (44), and the other end of the inflation pipe (16) is connected to the second connecting arm (25). The interior of the second connecting arm (25) is hollow, and the interior of the second connecting arm (25) is connected to the anti-reflux air bag (23).

2. The gastroscopy-assisted anti-reflux cannula according to claim 1, characterized in that: A guide limit slide groove is provided on the outer side of one end of the sliding sleeve (31), and a guide column is provided on the inner wall of the annular limit slide groove (17) so as to fit the guide limit slide groove. A first threaded adjustment knob (32) is threadedly connected to the outer side of the other end of the sliding sleeve (31), and one end of the first threaded adjustment knob (32) is rotatably connected to the inflation component (4).

3. The balloon anti-reflux cannula for gastroscopic treatment according to claim 1, characterized in that: A second sliding block (24) is slidably connected to the outside of the gastroscope sleeve (11) and located in the middle of the sliding adjustment groove (13). The top of the second sliding block (24) is fixed to the inner side of the anti-reflux airbag (23). A through hole is provided in the middle of the second sliding block (24). The connecting harness (33) passes through the through hole and is connected to the first sliding block (21). An elastic member (26) is provided between the first sliding block (21) and the second sliding block (24) and located on the outside of the connecting harness (33).

4. The balloon anti-reflux cannula for gastroscopic treatment according to claim 1, characterized in that: The inflation component (4) further includes a second position-limiting baffle (42), which is fixed to the outside of the other end of the gastroscope sleeve (11), and a side surface of the second position-limiting baffle (42) is provided with an annular rotating protrusion, which is installed on a side surface of the first threaded adjustment knob (32), and the first threaded adjustment knob (32) is rotatably connected to the second position-limiting baffle (42).

5. The balloon anti-reflux cannula for gastroscopic treatment according to claim 4, characterized in that: The inflation assembly (4) further includes a first limiting baffle (41), which is fixed to the outside of the gastroscope sleeve (11); the expansion airbag (44) is arranged between the first limiting baffle (41) and the second limiting baffle (42); a second threaded adjustment knob (43) is further arranged between the first limiting baffle (41) and the second limiting baffle (42); one end of the second threaded adjustment knob (43) is in contact with the expansion airbag (44).

6. The balloon anti-reflux cannula for gastroscopic treatment according to claim 5, characterized in that: The outer surface of the gastroscope sleeve (11) is provided with a thread at a position where the second thread adjustment knob (43) is installed, and the second thread adjustment knob (43) is threadedly connected to the gastroscope sleeve (11).

7. The balloon anti-reflux cannula for gastroscopic treatment according to claim 1, characterized in that: An engaging outer sleeve (14) is slidably provided on the outer side of the gastroscope sleeve (11).

8. The balloon anti-reflux cannula for gastroscopic treatment according to claim 1, characterized in that: A front end protective collar (12) is fixed to one end of the gastroscope sleeve (11).

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