Mouth expanding device for gastroscopy

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a mouth dilator for gastroscopy, which comprises a gastroscope guide tube, and a water absorption structure is slidably mounted on the outer side of the gastroscope guide tube; the water absorption structure comprises a first sliding sleeve, the first sliding sleeve is slidably mounted on the outer side of the gastroscope guide tube, a water absorption plate is fixed to the bottom of the first sliding sleeve, a water absorption hole is formed in the bottom face of one end of the first sliding sleeve, a sterile water absorption cotton pad is arranged in the water absorption plate, and an extrusion sliding plate is slidably mounted at one end in the water absorption plate. A water filtering extrusion plate is fixed at the other end in the water absorption plate, and a sterile water absorption cotton pad is mounted between the extrusion sliding plate and the water filtering extrusion plate; and the tooth supporting structure comprises a second sliding sleeve. The gastroscope is provided with the sterile cotton pad capable of adsorbing saliva, saturated saliva can be led out of the oral cavity in an extrusion mode, the sterile cotton pad has the function of repeatedly absorbing saliva, the sterile cotton pad does not need to be replaced, gastroscope operation is not interrupted, and the possibility of contamination is also reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical appliances, and particularly relates to a mouth opener for gastroscopy examination. Background Art

[0002] Gastroscopy is a medical examination method and also refers to the instrument used for this examination. It uses a slender and flexible tube to reach into the stomach, and doctors can directly observe the lesions in the esophagus, stomach, and duodenum, especially the tiny lesions. Gastroscopy examination can directly observe the real situation of the examined part, and can further clarify the diagnosis by performing pathological biopsy and cytological examination on the suspicious lesion sites. It is the preferred examination method for upper digestive tract lesions. The mouth opener for gastroscopy examination is an auxiliary instrument, mainly used to fix the patient's mouth, prevent the teeth from closing or the tongue from interfering with the endoscopic operation during the examination, and at the same time protect the patient's teeth, lips, and endoscopic equipment;

[0003] The main functions of the traditional mouth opener for gastroscopy examination are to fix the patient's mouth and maintain the operation channel. However, in actual application, saliva is likely to accumulate under the patient's tongue, which will affect the gastroscopy examination. The traditional countermeasures mostly use sterile cotton to absorb the saliva in the patient's mouth, but it needs to be replaced after saturation, which will cause interruption of the gastroscopy operation terminal and increase the risk of contamination. Summary of the Invention

[0004] The purpose of the present invention is to provide a mouth opener for gastroscopy examination, which has a sterile cotton pad for absorbing saliva and can lead the saturated saliva out of the mouth by squeezing, so that the sterile cotton pad has the function of repeatedly absorbing saliva, without the need to replace the sterile cotton pad, which will not interrupt the gastroscopy operation and also reduce the possibility of contamination.

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

[0006] A mouth opener for gastroscopy examination, including a gastroscopy guiding tube, and a water absorption structure is slidably installed on the outer side of the gastroscopy guiding tube;

[0007] The water absorption structure includes a first sliding sleeve, the first sliding sleeve is slidably installed on the outer side of the gastroscopy guiding tube, a water absorption plate is fixed at the bottom of the first sliding sleeve, a water absorption hole is arranged on the bottom surface of one end, a sterile water absorption cotton pad is arranged inside the water absorption plate, a squeezing sliding plate is slidably installed at one end inside the water absorption plate, a water filtering and squeezing plate is fixed at the other end inside the water absorption plate, and the sterile water absorption cotton pad is installed between the squeezing sliding plate and the water filtering and squeezing plate;

[0008] A tooth supporting structure, the tooth supporting structure includes a second sliding sleeve, the second sliding sleeve is slidably installed on the outer side of the gastroscopy guiding tube, and the tooth supporting structure is located at one end of the water absorption structure and is used for supporting teeth;

[0009] The lip support structure includes a third sliding sleeve, the third sliding sleeve is slidably mounted on the outside of the gastroscope guide tube, and the lip support structure is located at one end of the tooth support structure, and the lip support structure is used to support the lip.

[0010] In a preferred embodiment, a drainage pipe is installed at one end of the water absorption plate, and a water squeezing rope is arranged inside the drainage pipe. One end of the water squeezing rope passes through the water filtering squeezing plate and is fixed to the sterile absorbent cotton pad and the squeezing sliding plate. A first spring member is installed between the squeezing sliding plate and the water filtering squeezing plate and at both ends of the squeezing sliding plate and the water filtering squeezing plate.

[0011] In a preferred embodiment, a first sliding bin is fixed at the top and bottom of the outer side of the second sliding sleeve, a first sliding column is slidably connected to the inside of the first sliding bin, a cylindrical groove is provided at the bottom of the first sliding column, a second spring member is installed in the cylindrical groove, and an adjustable tooth support is rotatably connected to the top of the first sliding column.

[0012] In a preferred embodiment, the adjustable tooth support includes a rotating member, a V-shaped groove is provided on the top of the first sliding column, the bottom of the rotating member is located in the V-shaped groove, and the rotating member is rotatably connected to the first sliding column, a first tooth support is fixed on the top of the rotating member, and second tooth supports are rotatably connected on both sides of the first tooth support.

[0013] In a preferred embodiment, the rotation angle of the adjustable tooth support is 30°.

[0014] In a preferred embodiment, four second sliding bins are evenly fixed on the outer side of the third sliding sleeve, a second sliding column is slidably connected inside the second sliding bin, and a flexible lip support is fixed at one end of the second sliding column.

[0015] In a preferred embodiment, a pressing adjustment plate is fixed to one end of the bottom of the second sliding column, the pressing adjustment plate is slidably connected to the second sliding bin, a sliding positioning piece is slidably arranged on the pressing adjustment plate, an insert plate is arranged at the bottom of the sliding positioning piece, and a plurality of slots are arranged on one side of the second sliding bin.

[0016] In a preferred solution, a spring hole is formed at the bottom of the second sliding column, and a third spring component is installed inside the second sliding compartment, and the third spring component is located in the spring hole.

[0017] In a preferred embodiment, a sliding rod is fixed to one side of the third sliding sleeve, an outer sleeve plate is fixed to the outer side of the second sliding sleeve, a sliding groove is provided between the second sliding sleeve and the outer sleeve plate, and one end of the sliding rod is located in the sliding groove.

[0018] In a preferred embodiment, the outer surfaces of the first tooth tray and the second tooth tray are wrapped with soft silicone.

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

[0020] By means of the sterile absorbent cotton pad in cooperation with the extrusion sliding plate, the water filtering extrusion plate and the drain pipe, the present invention realizes the multiple extrusion and discharge of saliva during the operation and the reset and regeneration of the cotton pad, avoids the interruption of the examination caused by the frequent replacement of the sterile absorbent cotton pad, and at the same time, the remote pull rope controls the drainage to reduce the risk of direct contact pollution, ensuring the continuity of the operation and the hygienic safety;

[0021] The adjustable dental retainer of the present invention realizes the rotation adjustment of a fixed angle through the V-shaped rotating groove, combined with the expandable second dental retainer and the soft silicone wrapping, adapts to different tooth arrangements and occlusion arcs, reduces the risk of gum bruising, and at the same time, the four independently sliding flexible lip supports cooperate with the spring buffer to support the asymmetric lip shape to open and disperse the pressure, avoiding the corner of the mouth from being torn. Brief Description of the Drawings

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

[0023] Figure 2 is the bottom view structural schematic diagram of the present invention;

[0024] Figure 3 is the structural schematic diagram of the water absorption structure of the present invention;

[0025] Figure 4 is the partial structural sectional schematic diagram of the water absorption structure of the present invention;

[0026] Figure 5 is the connection structural schematic diagram of the tooth support structure and the lip support structure of the present invention;

[0027] Figure 6 is the structural explosion diagram of the lip support structure and the lip support structure of the present invention;

[0028] Figure 7 is the structural schematic diagram of the adjustable dental retainer of the present invention;

[0029] Figure 8 is the structural sectional schematic diagram of the lip support structure of the present invention.

[0030] In the drawings, the list of components represented by each reference numeral is as follows:

[0031] 1. Water absorption structure; 2. Supporting tooth structure; 3. Supporting lip structure; 4. Gastroscope guiding tube; 11. First sliding sleeve; 12. Water absorption plate; 13. Extrusion sliding plate; 14. Water filtering extrusion plate; 15. First spring member; 16. Sterile absorbent cotton pad; 17. Drainage pipe; 18. Water squeezing pull rope; 19. Water absorption holes; 21. Second sliding sleeve; 22. First sliding chamber; 23. First sliding column; 24. Second spring member; 25. Adjustable tooth holder; 26. Rotating member; 27. First tooth holder; 28. Second tooth holder; 29. Outer plate; 31. Third sliding sleeve; 32. Second sliding chamber; 33. Second sliding column; 34. Flexible lip holder; 35. Pressing and adjusting plate; 36. Sliding positioning member; 37. Third spring member; 38. Slide bar. Detailed implementation manners

[0032] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0033] 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 generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] 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 alternative embodiment that mutually excludes other embodiments.

[0035] Furthermore, the present invention will be described in detail in conjunction with the schematic diagrams. When detailing the embodiments of the present invention, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, 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.

[0036] Please refer to the attached Figures 1 to 8 As shown, a mouth opener for gastroscopy examination includes a gastroscope guiding tube 4, and a water absorption structure 1 is slidably installed on the outer side of the gastroscope guiding tube 4;

[0037] The water absorption structure 1 includes a first sliding sleeve 11 which is slidably mounted on the outer side of the gastroscope guiding tube 4. A water absorption plate 12 is fixed to the bottom of the first sliding sleeve 11. Water absorption holes 19 are provided on the bottom surface of one end. An aseptic water absorption cotton pad 16 is arranged inside the water absorption plate 12. A squeezing sliding plate 13 is slidably mounted at one end inside the water absorption plate 12, and a water filtering and squeezing plate 14 is fixed to the other end inside the water absorption plate 12. The aseptic water absorption cotton pad 16 is installed between the squeezing sliding plate 13 and the water filtering and squeezing plate 14;

[0038] The tooth supporting structure 2 includes a second sliding sleeve 21 which is slidably mounted on the outer side of the gastroscope guiding tube 4, and the tooth supporting structure 2 is located at one end of the water absorption structure 1. The tooth supporting structure 2 is used for supporting teeth;

[0039] The lip supporting structure 3 includes a third sliding sleeve 31 which is slidably mounted on the outer side of the gastroscope guiding tube 4, and the lip supporting structure 3 is located at one end of the tooth supporting structure 2. The lip supporting structure 3 is used for supporting lips;

[0040] In the above, during use, the gastroscope guiding tube 4 is inserted into the oral cavity, and the water absorption structure 1, the tooth supporting structure 2 and the lip supporting structure 3 are slid in sequence, so that the water absorption structure 1 is located above the patient's tongue, the tooth supporting structure 2 is located at the patient's tooth part, and the support for the patient's teeth is completed. The lip supporting structure 3 is at the patient's lips, and the support for the patient's lips is completed. During gastroscopy, the saliva located under the tongue will enter the inside of the water absorption plate 12 through the water absorption holes 19 and be absorbed by the aseptic water absorption cotton pad 16. When the aseptic water absorption cotton pad 16 is saturated with water, it can move towards the water filtering and squeezing plate 14 by sliding the squeezing sliding plate 13. The squeezed aseptic water absorption cotton pad 16 will discharge the liquid from the gaps on the water filtering and squeezing plate 14 and reset after discharging the liquid, and can continue to maintain the continuous adsorption ability;

[0041] At the same time, the slidable water absorption structure 1, the tooth supporting structure 2 and the lip supporting structure 3 can realize fine adjustment of the position, ensure the support stability and comfort, and are more suitable for different people to use. Using the aseptic water absorption cotton pad 16 to adsorb saliva can adsorb saliva and is convenient for intraoperative cleaning. And through the extrusion and drainage structure of the squeezing sliding plate 13 and the water filtering and squeezing plate 14, the saliva adsorbed by the saturated aseptic water absorption cotton pad 16 can be discharged, and the continuous adsorption state can be maintained;

[0042] It should be noted that the pore size of the water absorption holes 19 is set to a diameter sufficient for viscous liquids such as oral secretions to pass through.

[0043] In a preferred embodiment, please refer to Figure 3 and Figure 4, one end of the water absorption plate 12 is provided with a drain pipe 17, an extrusion water pulling rope 18 is arranged inside the drain pipe 17, one end of the extrusion water pulling rope 18 passes through the water filtering and extrusion plate 14 and is fixed to the sterile water absorption cotton pad 16 and the extrusion sliding plate 13, and a first spring member 15 is installed between the extrusion sliding plate 13 and the water filtering and extrusion plate 14 and at both ends of the extrusion sliding plate 13 and the water filtering and extrusion plate 14.

[0044] In this embodiment, when the sterile water absorption cotton pad 16 absorbs saliva to saturation, by pulling the extrusion water pulling rope 18 outwards, the extrusion sliding plate 13 is driven to move towards the water filtering and extrusion plate 14. During the movement, the sterile water absorption cotton pad 16 will be squeezed and contracted, and the saliva adsorbed in the sterile water absorption cotton pad 16 will be discharged. And as the extrusion sliding plate 13 moves, it will flow into the pores of the water filtering and extrusion plate 14. The saliva can flow out through the drain pipe 17 to the outside of the oral cavity, avoiding the residue of liquid in the oral cavity. After the liquid in the sterile water absorption cotton pad 16 is completely discharged, the extrusion water pulling rope 18 is released, and the first spring member 15 automatically rebounds, pushing the extrusion sliding plate 13 back to its original position, so that the sterile water absorption cotton pad 16 resumes the water absorption space;

[0045] By repeatedly squeezing the sterile water absorption cotton pad 16, the extrusion water pulling rope 18 can be pulled repeatedly during the operation to realize the recycling of the sterile water absorption cotton pad 16, without the need to frequently replace the cotton pad. And by remotely controlling the extrusion sliding plate 13 to squeeze the sterile water absorption cotton pad 16, direct contact with the sterile water absorption cotton pad 16 is avoided, preventing the sterile water absorption cotton pad 16 from being contaminated. And the liquid is directed out through the drain pipe 17, reducing the risk of secondary pollution. The first spring member 15 can provide an automatic reset function, which can increase the continuity of operation and ensure uniform force, avoiding the deviation of the sterile water absorption cotton pad 16 during the extrusion process and ensuring the adsorption efficiency;

[0046] It should be noted that while absorbing the oral secretion, the water absorption plate 12 also has the function of pressing the tongue. During the gastroscopy examination, the water absorption plate 12 is pressed above the patient's tongue, which can prevent the tongue from disturbing and touching the gastroscope pipeline during the examination, resulting in the shaking of the gastroscope;

[0047] Secondly, the connection part between the drain pipe 17 and the water absorption plate 12 is in a funnel shape (not specifically shown in the figure), which is convenient for the outflow of oral secretion.

[0048] Secondly, please refer to Figure 5 and Figure 6 , at the top and bottom of the outside of the second sliding sleeve 21, a first sliding bin 22 is fixed. A first sliding column 23 is slidably connected inside the first sliding bin 22. A cylindrical groove is opened at the bottom of the first sliding column 23, and a second spring member 24 is installed in the cylindrical groove. The top of the first sliding column 23 is rotatably connected with an adjustable tooth support 25.

[0049] In the above, when the patient's teeth are engaged on the adjustable tooth support 25, the natural contraction of the patient's oral cavity can squeeze and push the first sliding column 23 to slide into the first sliding compartment 22, and make the adjustable tooth support 25 fit the patient's teeth to complete the support of the teeth. At the same time, if the patient's head shifts during the gastroscopy, resulting in a larger opening and closing angle of the oral cavity, the adjustable tooth support 25 can be pushed up under the action of the second spring member 24, thereby changing the opening angle with the movement of the patient's oral cavity to avoid the adjustable tooth support 25 from separating from the patient's teeth during the process. At the same time, it can also float slightly according to the different bite force states of the patient, maintaining support while avoiding discomfort in the patient's oral cavity caused by excessive fixation. At the same time, the adjustable tooth support 25 can be deflected on the first sliding column 23, which can adapt to different oral conditions of different patients.

[0050] Secondly, please also refer to Figure 5 , Figure 6 and Figure 7 The adjustable tooth support 25 includes a rotating member 26, a V-shaped groove is provided on the top of the first sliding column 23, the bottom of the rotating member 26 is located in the V-shaped groove, and the rotating member 26 is rotatably connected to the first sliding column 23, a first tooth support 27 is fixed on the top of the rotating member 26, and second tooth supports 28 are rotatably connected on both sides of the first tooth support 27.

[0051] In the above, when in use, the connection point between the rotating member 26 and the first sliding column 23 can be rotated to offset the overall angle of the adjustable tooth support 25, thereby adjusting the inclination angle of the first tooth support 27 and the second tooth support 28. At the same time, the second tooth support 28 on both sides of the first tooth support 27 can be expanded or retracted, thereby adapting to the occlusal arc degree and tooth arrangement angle of the patient's upper and lower teeth, and is suitable for support use of different patients;

[0052] Furthermore, the V-shaped rotation groove provides a stable rotation fulcrum, which, combined with the main angle adjustment of the first tooth tray 27 and the lateral expansion of the second tooth tray 28, realizes personalized support in three-dimensional directions. It is especially suitable for patients with malocclusion or abnormal bite. The first tooth tray 27 and the second tooth tray 28 change the traditional single-point support to multi-point contact, which reduces local pressure and reduces the risk of gingival indentation. The limiting structure of the V-shaped rotation groove prevents excessive deflection of the rotating part 26, ensuring the stability of the tooth tray position after adjustment while retaining the flexibility of rapid fine-tuning during surgery.

[0053] Furthermore, the rotation angle of the adjustable tooth support 25 is 30°.

[0054] In this embodiment, the overall rotation angle of the adjustable tooth tray 25 is limited, which can prevent the adjustable tooth tray 25 from deflecting beyond the range, reduce the risk of the device slipping due to excessive rotation, and avoid accidental squeezing of the patient's oral soft tissue.

[0055] Furthermore, the outer surfaces of the first tooth support 27 and the second tooth support 28 are coated with soft silicone.

[0056] In the above, the soft silicone provided on the surface of the first tooth tray 27 and the second tooth tray 28 can better fit the surface of the patient's teeth, provide protection for the teeth, avoid direct friction between the teeth and the first tooth tray 27 and the second tooth tray 28, and avoid the risk of tooth damage.

[0057] In a preferred embodiment, please refer to Figure 5 , Figure 6 and Figure 8 Four second sliding bins 32 are evenly fixed on the outside of the third sliding sleeve 31 , a second sliding column 33 is slidably connected inside the second sliding bin 32 , and a flexible lip support 34 is fixed at one end of the second sliding column 33 .

[0058] In this embodiment, the extended length of each flexible lip support 34 can be independently controlled by sliding the four second sliding columns 33 respectively to adapt to the size of the lips of different patients, and the four flexible lip supports 34 are evenly distributed, and annular supporting force is formed through multi-directional independent adjustment to disperse the pressure of traditional single-point support and prevent local ischemia or indentation of the lips, and the extension of the four flexible lip supports 34 are all independently controlled to match the asymmetrical lip shape caused by congenital or traumatic factors, thereby greatly improving the adaptability of the device, and the adjustable lip stretching method can also reduce the risk of tearing at the corners of the mouth due to excessive pulling compared to the fixed lip stretching method, and the flexible lip support 34 uses its soft material to naturally wrap the outer edge of the lips to avoid friction damage to the lip skin by hard materials.

[0059] Secondly, please also refer to Figure 5 and Figure 6 A pressing adjustment plate 35 is fixed to one end of the bottom of the second sliding column 33, and the pressing adjustment plate 35 is slidably connected to the second sliding compartment 32. A sliding positioning member 36 is slidably arranged on the pressing adjustment plate 35, and an insert plate is arranged at the bottom of the sliding positioning member 36. A plurality of slots are arranged on one side of the second sliding compartment 32.

[0060] In the above, sliding the sliding positioning member 36 outward can drive the bottom plug plate to disengage from the slot, thereby releasing the position fixation of the second sliding column 33, and by sliding the second sliding column 33, the flexible lip support 34 can be controlled to change the extended length, and after the length is adjusted, the plug plate at the bottom of the sliding positioning member 36 is pushed into the slot to complete the position fixation of the second sliding column 33. A plurality of slots set on one side of the second sliding compartment 32 can provide a plurality of preset adjustment gears, which is convenient for quickly selecting the optimal support length, and the locking structure between the plug plate and the slot can ensure that the second sliding column 33 can be fixed after adjustment, thereby avoiding support displacement caused by instrument traction during gastroscopy operation and improving safety.

[0061] Next, please refer to again Figure 8 A spring hole is provided at the bottom of the second sliding post 33, and a third spring member 37 is installed inside the second sliding chamber 32. The third spring member 37 is located in the spring hole.

[0062] In the above, the provided third spring member 37 can push the automatic extension of the flexible lip support 34 to the maximum extension distance after the second sliding post 33 is unlocked. At the same time, without applying a lock to the second sliding post 33 through the sliding positioning member 36, when only the pushing force of the third spring member 37 is used to open the patient's lips, the elasticity of the third spring member 37 can buffer the patient's lip movement, avoiding the lips being completely fixed for a long time and causing discomfort to the patient.

[0063] In a preferred embodiment, please refer to together Figure 5 and Figure 6 A slide bar 38 is fixed to one side of the third sliding sleeve 31, an outer plate 29 is fixed to the outside of the second sliding sleeve 21, a chute is provided between the second sliding sleeve 21 and the outer plate 29, and one end of the slide bar 38 is located in the chute.

[0064] In this embodiment, by sliding the slide bar 38 along the chute, the third sliding sleeve 31 can be driven to move relative to the second sliding sleeve 21, adjusting the distance between the tooth support structure 2 and the lip support structure 3 to adapt to the difference in the patient's oral cavity depth. Moreover, the slide bar 38 has a sliding distance limit in the chute, which can ensure that the sliding between the tooth support structure 2 and the lip support structure 3 is within a limited range, avoiding the support failure caused by excessive separation.

[0065] The working principle of the present invention is as follows: When in use, the device is placed in the patient's oral cavity, and the water absorption structure 1 is located at the patient's tongue position. During gastroscopy, if the patient secretes saliva in the oral cavity, the saliva will enter the inside of the first sliding sleeve 11 through the water absorption holes 19 and be adsorbed by the sterile water absorption cotton pad 16. When the sterile water absorption cotton pad 16 is saturated with adsorption, pulling the water squeezing pull rope 18 will drive the extrusion sliding plate 13 to move towards the water filtering extrusion plate 14, squeezing the sterile water absorption cotton pad 16 to contract, so that the liquid adsorbed by the sterile water absorption cotton pad 16 is discharged from the water filtering extrusion plate 14 and led out of the oral cavity through the liquid discharge pipe 17. Releasing the water squeezing pull rope 18, under the push of the first spring member 15, the extrusion sliding plate 13 and the sterile water absorption cotton pad 16 after liquid discharge are reset, and can continue to adsorb the saliva secreted by the patient. There is no need to replace the sterile water absorption cotton pad 16, and by controlling the discharge of saliva through the remote water squeezing pull rope 18, the risk of secondary pollution can be reduced. The tooth support structure 2 and the lip support structure 3 can automatically adjust the height according to the patient's bite through the linkage of the first sliding column 23 and the second spring member 24, and combine with the adjustable tooth tray 25 that can be deflected to adapt to the patient's tooth bite angle, suitable for different people with different tooth shapes. Similarly, the four flexible lip supports 34 are independently telescopic controlled and can be independently telescoped according to different people to adapt to different lip shapes. At the same time, there is a linkage between the tooth support structure 2 and the lip support structure 3, which can adapt to the oral depths of different patients.

[0066] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. A mouth opener for gastroscopy, characterized in that: It includes a gastroscope guiding tube (4), and a water absorption structure (1) is slidably installed on the outer side of the gastroscope guiding tube (4); The water absorption structure (1) includes a first sliding sleeve (11), the first sliding sleeve (11) is slidably installed on the outer side of the gastroscope guiding tube (4), a water absorption plate (12) is fixed to the bottom of the first sliding sleeve (11), a water absorption hole (19) is arranged on the bottom surface of one end, a sterile water absorption cotton pad (16) is arranged inside the water absorption plate (12), a squeezing sliding plate (13) is slidably installed at one end inside the water absorption plate (12), a water filtering and squeezing plate (14) is fixed to the other end inside the water absorption plate (12), and the sterile water absorption cotton pad (16) is installed between the squeezing sliding plate (13) and the water filtering and squeezing plate (14); A tooth supporting structure (2), the tooth supporting structure (2) includes a second sliding sleeve (21), the second sliding sleeve (21) is slidably installed on the outer side of the gastroscope guiding tube (4), and the tooth supporting structure (2) is located at one end of the water absorption structure (1), and the tooth supporting structure (2) is used for supporting teeth; A lip supporting structure (3), the lip supporting structure (3) includes a third sliding sleeve (31), the third sliding sleeve (31) is slidably installed on the outer side of the gastroscope guiding tube (4), and the lip supporting structure (3) is located at one end of the tooth supporting structure (2), and the lip supporting structure (3) is used for supporting the lips.

2. The mouth opener for gastroscopy according to claim 1, characterized in that: A drain pipe (17) is installed at one end of the water absorption plate (12), a water squeezing pull rope (18) is arranged inside the drain pipe (17), one end of the water squeezing pull rope (18) passes through the water filtering and squeezing plate (14) and is fixed to the sterile water absorption cotton pad (16) and the squeezing sliding plate (13), and first spring members (15) are installed between the squeezing sliding plate (13) and the water filtering and squeezing plate (14) and at both ends of the squeezing sliding plate (13) and the water filtering and squeezing plate (14).

3. The mouth opener for gastroscopy according to claim 1, wherein: At the top and bottom of the outer side of the second sliding sleeve (21), first sliding bins (22) are fixed, a first sliding column (23) is slidably connected inside the first sliding bins (22), a cylindrical groove is opened at the bottom of the first sliding column (23), a second spring member (24) is installed inside the cylindrical groove, and an adjustable tooth holder (25) is rotatably connected to the top of the first sliding column (23).

4. The mouth opener for gastroscopy according to claim 3, characterized in that: The adjustable tooth holder (25) includes a rotating member (26), a V-shaped rotating groove is arranged at the top of the first sliding column (23), the bottom of the rotating member (26) is located inside the V-shaped rotating groove, and the rotating member (26) is rotatably connected to the first sliding column (23), a first tooth holder (27) is fixed to the top of the rotating member (26), and second tooth holders (28) are rotatably connected to both sides of the first tooth holder (27).

5. The mouth opener for gastroscopy according to claim 3, wherein: The rotation angle of the adjustable tooth holder (25) is 30°.

6. The mouth opener for gastroscopy examination according to claim 1, characterized in that: Four second sliding bins (32) are uniformly fixed to the outer side of the third sliding sleeve (31), a second sliding column (33) is slidably connected inside the second sliding bins (32), and a flexible lip holder (34) is fixed to one end of the second sliding column (33).

7. The mouth opener for gastroscopy examination according to claim 6, characterized in that: One end of the bottom of the second sliding column (33) is fixed with a pressing and adjusting plate (35). The pressing and adjusting plate (35) is slidably connected to the second sliding bin (32). A sliding positioning member (36) is slidably arranged on the pressing and adjusting plate (35). A plug board is arranged at the bottom of the sliding positioning member (36). A plurality of slots are arranged on one side of the second sliding bin (32).

8. The mouth opener for gastroscopy according to claim 6, characterized in that: A spring hole is formed in the bottom of the second sliding column (33). A third spring member (37) is installed inside the second sliding bin (32). The third spring member (37) is located in the spring hole.

9. The mouth opener for gastroscopy according to claim 1, wherein: A slide bar (38) is fixed to one side of the third sliding sleeve (31). An outer sleeve plate (29) is fixed to the outside of the second sliding sleeve (21). A chute is formed between the second sliding sleeve (21) and the outer sleeve plate (29). One end of the slide bar (38) is located in the chute.

10. A mouth opener for gastroscopy according to claim 4, characterized in that: The outer surfaces of the first tooth bracket (27) and the second tooth bracket (28) are wrapped with soft silica gel.

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