Oral cavity wetting device for oral cavity examination
The integrated oral moistening device, driven by a motor and controlled by a controller, achieves multi-dimensional precise moistening and automated collaborative operation with the endoscope, solving the problems of poor moistening effect and weak operational coordination in existing technologies, thus improving examination efficiency and patient comfort.
Patent Information
- Application Number
- CN202511504741.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2025-12-26
AI Technical Summary
Existing oral moistening devices suffer from poor moistening effect, weak operational coordination, low equipment integration, insufficient positioning accuracy, and poor adaptability. They are difficult to work in conjunction with examination equipment such as endoscopes, affecting examination efficiency and patient comfort.
An oral cavity moistening device for oral examination was designed, which integrates a transverse and longitudinal reciprocating moving component, a rotation drive component, and an illumination lamp and atomizing nozzle. Combined with a motor drive and controller, it realizes automated collaborative operation of multi-dimensional precise positioning moistening, illumination and endoscope.
It achieves multi-dimensional and precise moistening inside the oral cavity, improving examination efficiency and patient comfort, reducing the operational burden on medical staff, and enhancing the adaptability and integration of the equipment, making it suitable for different patients and examination scenarios.
Smart Images
Figure CN121197638A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of oral moistening devices, specifically an oral moistening device for oral examination. Background Technology
[0002] Maintaining oral mucosal moisture is crucial for improving examination clarity, patient comfort, and operational efficiency during oral medical examinations and treatments. Currently, conventional methods of oral moistening rely on healthcare professionals manually applying cotton swabs, spray bottles, or syringes for localized moistening. This approach suffers from inconvenience, uneven moistening, and potential interference with endoscope use. Especially during prolonged examinations, the oral cavity can easily become dry, affecting visual clarity and even causing patient discomfort.
[0003] While some automated or semi-automated oral moistening devices exist in the current technology, their complex structure and poor flexibility often prevent them from working in conjunction with examination equipment such as endoscopes, making it difficult to achieve precise positioning and multi-angle spraying. Furthermore, existing devices generally lack lighting and instrument fixation functions, failing to meet the needs of integrated and intelligent oral examinations. Specifically:
[0004] 1. Poor wetting effect: Traditional manual spraying is difficult to achieve multi-angle and uniform wetting coverage in the oral cavity, often resulting in local over-wetting or dry dead spots, affecting the examination field of vision and patient comfort.
[0005] 2. Poor coordination: During oral examinations, doctors need to operate the endoscope and moistened instruments simultaneously, which is difficult to coordinate, leading to interruptions in the examination process and low efficiency.
[0006] 3. Low equipment integration: Most existing humidification devices are independent devices that cannot be effectively integrated with inspection tools such as lighting and endoscopes, resulting in equipment redundancy and complicated operation.
[0007] 4. Insufficient positioning accuracy: The lack of a precise position adjustment mechanism makes it difficult for the nozzle to be stably aligned with a specific oral cavity area, affecting the accuracy and consistency of wetting.
[0008] 5. Poor adaptability: The spray angle, position, and lighting cannot be flexibly adjusted according to the oral structure or examination needs of different patients, which limits the clinical application scope of the equipment.
[0009] Therefore, there is an urgent need for an oral humidification device with a reasonable structure, convenient operation, and the ability to achieve precise spraying, lighting, and endoscopic coordination to improve the efficiency and quality of oral examinations. Summary of the Invention
[0010] To overcome the technical deficiencies in the prior art and effectively solve the technical problems in the background art, the present invention provides the following technical solution:
[0011] An oral cavity moistening device for oral examination includes an operating table. A through groove is formed at the left end of the front side of the operating table. A transverse reciprocating moving assembly is disposed at the right end of the front side of the operating table. A longitudinal reciprocating moving assembly is disposed at the front end of the transverse reciprocating moving assembly. A moving plate is disposed at the left end of the longitudinal reciprocating moving assembly. A rotating tube is rotatably connected to the left end of the rear side of the moving plate. A rotary joint is connected to the front end of the rotating tube. A rotation drive assembly is disposed correspondingly on the outer side of the rotating end of the rotary joint. The right end of the front side of the moving plate... A water pump and a water tank are sequentially arranged at the end. The water inlet of the fixed end of the rotary joint is connected to the water outlet of the water pump through a connecting pipe. The water inlet of the water pump and the water outlet of the water tank are connected through a connecting pipe. An L-shaped pipe is provided at the rear end of the rotary pipe. A connecting seat is provided at the transverse end of the L-shaped pipe. An atomizing nozzle for spraying and moistening the inside of the oral cavity is provided at the outer end of the connecting seat. A lighting lamp is provided on one side of the connecting seat. An elastic retaining ring for movable locking of the endoscope head is provided at the top of the connecting seat.
[0012] As a preferred embodiment of the present invention, the transverse reciprocating motion assembly includes a reciprocating motor, a slider, a guide rod, and a lead screw. A groove is provided at the right end of the front side of the operating table. The guide rod is fixedly installed between the left and right inner walls of the groove. The lead screw is rotatably connected between the left and right inner walls of the groove via a bearing. The lead screw and the guide rod are parallel to each other. The guide rod is slidably connected to a sliding hole on the side of the slider. The lead screw is threadedly connected to a threaded hole on the side of the slider. The reciprocating motor is fixedly installed on the right side of the operating table. The output shaft of the reciprocating motor is fixedly connected to the right end of the lead screw.
[0013] As a preferred embodiment of the present invention, the longitudinal reciprocating moving assembly includes a fixed frame, a second reciprocating motor, a second guide rod, a second slider, and a second lead screw. The fixed frame is disposed on the front side of the first slider. The second guide rod is fixedly installed between the front and rear inner walls of the fixed frame. The second lead screw is rotatably connected between the front and rear inner walls of the fixed frame via a bearing. The second lead screw and the second guide rod are parallel to each other. The second guide rod is slidably connected to a sliding hole on the side of the second slider. The second lead screw is threadedly connected to a threaded hole on the side of the second slider. The right end of the moving plate is fixedly connected to the left side of the second slider. The second reciprocating motor is fixedly installed on the front side of the fixed frame. The output shaft of the second reciprocating motor is fixedly connected to the front end of the second lead screw.
[0014] As a preferred embodiment of the present invention, the rotation drive assembly includes a driven gear, a drive motor and a drive gear. The driven gear is provided on the outer side of the rotating end of the rotary joint. The drive motor is provided on the front side of the moving plate. The output shaft of the drive motor is fixedly connected to the center of the rear side of the drive gear. The drive gear meshes with the driven gear.
[0015] As a preferred embodiment of the present invention, the upper and lower surfaces of the operating table are symmetrically provided with threaded holes with communicating through slots. A screw is internally threaded into the threaded hole. A knob is provided at the outer end of the screw located outside the operating table. An elastic clamping plate for clamping and fixing the oral cavity expansion device is provided at the inner end of the screw located inside the through slot.
[0016] As a preferred embodiment of the present invention, connecting plates are integrally provided symmetrically on the left and right ends of the rear side of the operating table. Support plates are rotatably connected to the outer sides of the two connecting plates via connecting shafts and damping bearings, respectively. Bases are integrally provided on the rear ends of the outer sides of the two support plates. Fixing holes are evenly distributed on the bases. Adjustment holes located outside the connecting shafts are arranged in a ring along the circumferential direction on the outer side of the connecting plates. Limiting holes are provided on the outer side of the support plates. Limiting pins are movably inserted into the limiting holes and one of the corresponding adjustment holes.
[0017] As a preferred embodiment of the present invention, a controller and a battery are sequentially arranged on the outer side of the fixed frame.
[0018] As a preferred embodiment of the present invention, the elastic retaining ring has a slot on the side away from the connecting seat.
[0019] Compared with existing technologies, the beneficial effects of this invention are: This oral cavity moistening device for oral examination achieves multi-dimensional and precise positioning moistening within the oral cavity; it integrates moistening, lighting, and endoscopic examination functions; it achieves an organic combination of automated control and manual adjustment, improving operational convenience; and it enhances the adaptability of the device in different patients and examination scenarios. Specifically:
[0020] 1. High degree of integration and multiple functions: By setting up atomizing nozzles, lighting lamps and flexible retaining rings, it realizes multi-functional integration of oral cavity moistening, lighting and endoscope fixation, which significantly improves examination efficiency.
[0021] 2. Precise positioning and multi-angle spraying: Through the horizontal and vertical reciprocating moving components, combined with the rotation drive components, the nozzle can achieve precise movement and multi-angle rotation in three-dimensional space, ensuring uniform wetting of all areas inside the oral cavity and avoiding dead corners.
[0022] 3. Automated operation reduces the burden on medical staff: The motor drive and controller work together to achieve automated control of spraying, lighting and endoscope rotation, reducing manual intervention and improving the consistency and reliability of operation.
[0023] 4. Compact structure and strong applicability: The device is equipped with an adjustable angle support structure and an oral cavity expansion device fixing mechanism to adapt to the needs of different patients and examination scenarios, thereby improving the versatility and stability of the equipment.
[0024] 5. Easy to use and simple to maintain: The modular design of each component makes it easy to disassemble, clean and replace, meets the hygiene requirements of medical devices and extends the service life of the equipment. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of the present invention.
[0026] Figure 2 This is a schematic diagram of the operating table of the present invention.
[0027] Figure 3 This is a schematic diagram of the structure of the transverse reciprocating moving component and the longitudinal reciprocating moving component of the present invention.
[0028] Figure 4 This is a schematic diagram of the movable plate and its structure according to the present invention.
[0029] Figure 5 This is a schematic diagram of the structure of the movable plate of the present invention.
[0030] Figure 6 This is a schematic diagram of the rotating tube and its structure according to the present invention.
[0031] Figure 7 This is a schematic diagram of the rotation drive assembly of the present invention.
[0032] Figure 8 This is a schematic diagram of the screw and its structure according to the present invention.
[0033] Figure 9 This is a schematic diagram of the support plate and its structure according to the present invention.
[0034] In the diagram: 1. Control panel; 2. Through groove; 3. Groove; 4. Lateral reciprocating moving assembly; 4. Reciprocating motor 1; 41. Slider 1; 42. Guide rod 1; 43. Lead screw 1; 44. Longitudinal reciprocating moving assembly; 5. Fixed frame; 51. Reciprocating motor 2; 52. Guide rod 2; 53. Slider 2; 54. Lead screw 2; 55. Moving plate; 6. Rotating tube; 7. Rotating drive assembly; 8. Driven gear; 81. Drive motor; 82. Drive gear; 83. Rotary joint; 9. Water pump; 10. Water tank; 11. L-shaped tube; 12. Connecting seat; 13. Atomizing nozzle; 14. Lighting lamp; 15. Elastic retaining ring; 16. Groove; 17. Threaded hole; 18. Knob; 19. Screw; 20. Elastic clamp; 21. Controller; 22. Connecting plate; 23. Support plate; 24. Connecting shaft; 25. Base; 26. Fixing hole; 27. Limiting hole; 28. Adjusting hole; 29. Limiting pin; 30. Battery; 31. Detailed Implementation
[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0036] Please see Figure 1-9 This invention provides a technical solution: an oral cavity moistening device for oral examination, comprising an operating table 1, a through groove 2 at the left front end of the operating table 1, a transverse reciprocating moving component 4 at the right front end of the operating table 1, a longitudinal reciprocating moving component 5 at the front end of the transverse reciprocating moving component 4, a moving plate 6 at the left end of the longitudinal reciprocating moving component 5, a rotating tube 7 rotatably connected to the left rear end of the moving plate 6, a rotary joint 9 welded and sealed at the front end of the rotating tube 7, a rotating drive component 8 correspondingly provided on the outer side of the rotating end of the rotary joint 9, and a water pump 10 and a water tank 11 welded and fixed sequentially at the right front end of the moving plate 6. In use, the water pump 10 and the water tank 11 provide moistening. The principle of saline solution and other liquids is a mature existing technology, which will not be described in detail here. The inlet of the fixed end of the rotary joint 9 is connected to the outlet of the water pump 10 through a connecting pipe and sealed. The inlet of the water pump 10 and the outlet of the water tank 11 are connected through a connecting pipe and sealed. An L-shaped tube 12 is integrally provided at the rear end of the rotary tube 7. A connecting seat 13 is welded and sealed at the transverse end of the L-shaped tube 12. An atomizing nozzle 14 for spraying and moistening the inside of the oral cavity and is sealed to the connecting pipe is welded and sealed at the outer end of the connecting seat 13. A lighting lamp 15 is glued and fixed on one side of the connecting seat 13. An elastic retaining ring 16 for moving and locking the endoscope head is glued and fixed at the top of the connecting seat 13.
[0037] Furthermore, such as Figure 3As shown, the transverse reciprocating motion assembly 4 includes a reciprocating motor 41, a slider 42, a guide rod 43, and a lead screw 44. A groove 3 is provided at the right end of the front side of the operating table 1. The guide rod 43 is welded and fixedly installed between the left and right inner walls of the groove 3. The lead screw 44 is rotatably connected between the left and right inner walls of the groove 3 via bearings. The lead screw 44 and the guide rod 43 are parallel to each other. The guide rod 43 is slidably connected to the sliding hole on the side of the slider 42, and the lead screw 44 is threadedly connected to the threaded hole on the side of the slider 42. The reciprocating motor 41 is welded and fixedly installed on the operating table 1. On the right side of the worktable 1, the output shaft of the reciprocating motor 41 is welded and fixedly connected to the right end of the lead screw 44. In use, the reciprocating motor 41 drives the lead screw 44 to rotate, which in turn drives the slider 42 and its longitudinal reciprocating moving assembly 5, moving plate 6, rotating tube 7, L-shaped tube 12, connecting seat 13, atomizing nozzle 14, lighting lamp 15, and endoscope part on the elastic retaining ring 16 to move laterally and reciprocate, so as to move it to the oral cavity for related moistening, lighting and endoscopic examination operations, and remove it when not in use.
[0038] Furthermore, such as Figure 3 As shown, the longitudinal reciprocating moving assembly 5 includes a fixed frame 51, a second reciprocating motor 52, a second guide rod 53, a second slider 54, and a second lead screw 55. The fixed frame 51 is welded and fixed to the front side of the first slider 42. The second guide rod 53 is welded and fixed between the front and rear inner walls of the fixed frame 51. The second lead screw 55 is rotatably connected between the front and rear inner walls of the fixed frame 51 through a bearing. The second lead screw 55 and the second guide rod 53 are parallel to each other. The second guide rod 53 is slidably connected to the sliding hole on the side of the second slider 54. The second lead screw 55 is threadedly connected to the threaded hole on the side of the second slider 54. The right end of the moving plate 6 is welded and fixedly connected to the left side of the second slider 54. The second reciprocating motor 52... 2. The reciprocating motor 2 52 is welded and fixedly installed on the front side of the fixed frame 51. The output shaft of the reciprocating motor 2 52 is welded and fixedly connected to the front end of the lead screw 2 55. In use, the reciprocating motor 2 52 drives the lead screw 2 55 to rotate, which can drive the slider 2 54 and the moving plate 6 on it to move vertically. This, in turn, drives the rotating tube 7, L-shaped tube 12, connecting seat 13, atomizing nozzle 14, lighting lamp 15 and endoscope part on elastic retaining ring 16 to move vertically, so as to facilitate the insertion into the oral cavity for moistening, lighting and endoscopic examination. After the insertion is completed, it is removed from the oral cavity position by the transverse reciprocating moving assembly 4 to facilitate subsequent treatment.
[0039] Furthermore, such as Figure 7As shown, the rotation drive assembly 8 includes a driven gear 81, a drive motor 82, and a drive gear 83. The driven gear 81 is welded and fixed to the outer side of the rotating end of the rotary joint 9. The drive motor 82 is welded and fixed to the front side of the moving plate 6. The output shaft of the drive motor 82 is welded and fixed to the center of the rear side of the drive gear 83. The drive gear 83 meshes with the driven gear 81. In use, the drive motor 82 drives the drive gear 83 to rotate, which in turn drives the driven gear 81 and the rotating end of the rotary joint 9 to rotate. This drives the rotation of the rotating tube 7, the L-shaped tube 12, the connecting seat 13, the atomizing nozzle 14, the lighting lamp 15, and the endoscope part on the elastic retaining ring 16 (the angle of both forward and reverse rotation does not exceed 180°), which can achieve uniform rotation humidification, lighting, and endoscopic inspection.
[0040] Furthermore, such as Figure 2 and 8 As shown, the upper and lower surfaces of the operating table 1 are symmetrically provided with threaded holes 18 in the through grooves 2. A screw 20 is internally threaded into the threaded hole 18. A knob 19 is integrally provided on the outer end of the screw 20 located on the outside of the operating table 1. The inner end of the screw 20 located inside the through groove 2 is rotatably connected to a rubber elastic clamp 21 with anti-slip grooves for clamping and fixing the oral cavity expander. In use, by turning the two knobs 19, the two screws 20 are driven to rise and fall, thereby driving the two elastic clamps 21 to rise and fall, so as to clamp and fix the oral cavity expander for easy oral cavity expander operation during examination and treatment.
[0041] Furthermore, such as Figure 2 and 9 As shown, connecting plates 23 are symmetrically and integrally arranged on the left and right ends of the rear side of the operating table 1. Support plates 24 are rotatably connected to the outer sides of the two connecting plates 23 via connecting shafts 25 and damping bearings, respectively. Bases 26 are integrally arranged on the rear ends of the outer sides of the two support plates 24. Fixing holes 27 are evenly distributed on the bases 26. Adjustment holes 29 are arranged in a ring around the outer side of the connecting plates 23 in the circumferential direction, located outside the connecting shafts 25. Limiting holes 28 are opened on the outer side of the support plates 24. Limiting pins 30 are movably inserted into the limiting holes 28 and one of the corresponding adjustment holes 29. In use, the device is fixedly installed in a suitable position by using the bases 26, fixing holes 27 and fixing bolts. By pulling out the limiting pins 30 and rotating the operating table 1 and connecting plates 23, and then inserting the limiting pins 30 into the corresponding limiting holes 28 and adjustment holes 29 for fixing, the angle of the main body of the device can be adjusted as needed.
[0042] Furthermore, such as Figure 1 As shown, a controller 22 and a battery 31 are arranged sequentially on the outside of the fixed frame 51. In use, the controller 22 is used for control operations, and the battery 31 provides power.
[0043] Furthermore, such as Figure 6 As shown, the elastic retaining ring 16 has a corresponding slot 17 on the side away from the connecting seat 13. In use, the elastic retaining ring 16 and the slot 17 facilitate the movable locking and fixing of the endoscope head, thereby facilitating automatic rotation detection and inspection of the oral cavity during spraying operation or separately.
[0044] Specifically, the reciprocating motor 41, reciprocating motor 52, drive motor 82, water pump 10, lighting lamp 15, controller 22 and battery 31 in this invention are electrically connected respectively. The reciprocating motor 41, reciprocating motor 52, drive motor 82, water pump 10, lighting lamp 15, controller 22 and battery 31 all use conventional equipment commonly used in the prior art. Their connection and control operation principles are all existing mature technologies, and will not be further described here.
[0045] Specifically, the working principle and operation details are as follows:
[0046] I. Overall Operation Process
[0047] 1. Equipment preparation stage:
[0048] Inject physiological saline into water tank 11 and check the sealing of each connecting pipe;
[0049] The device is mounted on a treatment table or mobile stand via the base 26 and the fixing hole 27;
[0050] Insert the limit pin 30, adjust the operating table 1 to a suitable angle, and then lock it.
[0051] Insert the endoscope lens into the elastic retaining ring 16 to ensure it is securely fixed.
[0052] 2. Oral cavity positioning and fixation:
[0053] Place the oral cavity expander in the through groove 2, and rotate the knob 19 to drive the screw 20 to clamp and fix it with the elastic clamp 21.
[0054] The controller 22 is activated, and the atomizing nozzle 14 is initially positioned at the entrance of the oral cavity by the horizontal and vertical reciprocating moving components.
[0055] 3. Inspection and wetting procedures:
[0056] Turn on the illumination lamp 15 and the endoscope system;
[0057] Start the water pump 10 and drive motor 82, and the atomizing nozzle 14 sprays water at multiple angles under the drive of the rotating tube 7;
[0058] The horizontal and vertical positions and rotation angle of the nozzles can be adjusted by the controller 22 to achieve comprehensive wetting and inspection;
[0059] The spraying frequency and range can be adjusted as needed during the inspection.
[0060] 4. End and Reset:
[0061] Turn off the water pump, lights, and motor, and remove the nozzle from the mouth.
[0062] Loosen the elastic clamp 21 and remove the expansion device;
[0063] Clean the atomizing nozzle 14 and the elastic retaining ring 16, and disinfect them for later use.
[0064] II. Operational Details of Key Components
[0065] 1. Lateral and longitudinal movement control:
[0066] Reciprocating motor 41 and reciprocating motor 52 respectively drive the nozzle to move in the horizontal and vertical directions through a lead screw and guide rod mechanism;
[0067] The controller 22 can preset the movement path to achieve "Z" shaped or circular scanning spray.
[0068] 2. Rotary spray mechanism:
[0069] The drive motor 82 drives the rotary joint 9 and the rotating tube 7 to reciprocate within a range of ±180° via gear sets 81 and 83;
[0070] The rotation amplitude and speed can be set according to the oral cavity structure to avoid soft tissue collision.
[0071] 3. Synergy between illumination and endoscopy:
[0072] The lighting lamp 15 uses a cold light source to avoid causing discomfort to the mucous membranes due to prolonged exposure;
[0073] The flexible retaining ring 16 has a groove 17, which facilitates quick installation and removal of endoscopes of different sizes.
[0074] 4. Angle adjustment and fixation:
[0075] By cooperating with the adjustment hole 29 and the limit pin 30, the operating table can be adjusted in multiple positions within the range of 0° to 90°.
[0076] The damped bearing design ensures a smooth, undisturbed adjustment process.
[0077] 5. Circuits and Control Systems:
[0078] Battery 31 provides an independent power source for the device, supporting continuous operation for ≥2 hours;
[0079] The controller 22 integrates a touch screen interface, supporting switching between manual operation and programmed control modes.
[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An oral cavity moistening device for oral examination, comprising an operating table (1), characterized in that: A through slot (2) is provided on the left side of the front side of the operating table (1). A transverse reciprocating moving component (4) is provided on the right side of the front side of the operating table (1). A longitudinal reciprocating moving component (5) is provided at the front end of the transverse reciprocating moving component (4). A moving plate (6) is provided on the left side of the longitudinal reciprocating moving component (5). A rotating pipe (7) is rotatably connected to the left side of the rear side of the moving plate (6). A rotary joint (9) is connected to the front end of the rotating pipe (7). A rotating drive component (8) is provided on the outer side of the rotating end of the rotary joint (9). A water pump (10) and a water tank (11) are arranged sequentially on the right side of the front side of the moving plate (6). The inlet of the fixed end of the rotary joint (9) is connected to the outlet of the water pump (10) through a connecting pipe. The inlet of the water pump (10) and the outlet of the water tank (11) are connected through a connecting pipe. An L-shaped pipe (12) is provided at the rear end of the rotary pipe (7). A connecting seat (13) is provided at the transverse end of the L-shaped pipe (12). An atomizing nozzle (14) for spraying and moistening the inside of the oral cavity is provided at the outer end of the connecting seat (13). A lighting lamp (15) is provided on one side of the connecting seat (13). An elastic retaining ring (16) for movably engaging the endoscope lens is provided at the top of the connecting seat (13).
2. The oral cavity moistening device for oral examination according to claim 1, characterized in that: The transverse reciprocating motion assembly (4) includes a reciprocating motor (41), a slider (42), a guide rod (43), and a lead screw (44). A groove (3) is provided on the right side of the front side of the operating table (1). The guide rod (43) is fixedly installed between the left and right inner walls of the groove (3). The lead screw (44) is rotatably connected between the left and right inner walls of the groove (3) through a bearing. The lead screw (44) and the guide rod (43) are parallel to each other. The guide rod (43) is slidably connected to the sliding hole on the side of the slider (42). The lead screw (44) is threadedly connected to the threaded hole on the side of the slider (42). The reciprocating motor (41) is fixedly installed on the right side of the operating table (1). The output shaft of the reciprocating motor (41) is fixedly connected to the right end of the lead screw (44).
3. The oral cavity moistening device for oral examination according to claim 2, characterized in that: The longitudinal reciprocating moving assembly (5) includes a fixed frame (51), a second reciprocating motor (52), a second guide rod (53), a second slider (54), and a second lead screw (55). The fixed frame (51) is located on the front side of the first slider (42). The second guide rod (53) is fixedly installed between the front and rear inner walls of the fixed frame (51). The second lead screw (55) is rotatably connected between the front and rear inner walls of the fixed frame (51) through a bearing. The second lead screw (55) and the second guide rod (53) are parallel to each other. The second guide rod (53) is slidably connected to the sliding hole on the side of the second slider (54). The second lead screw (55) is threadedly connected to the threaded hole on the side of the second slider (54). The right end of the moving plate (6) is fixedly connected to the left side of the second slider (54). The second reciprocating motor (52) is fixedly installed on the front side of the fixed frame (51). The output shaft of the second reciprocating motor (52) is fixedly connected to the front end of the second lead screw (55).
4. The oral cavity moistening device for oral examination according to claim 1, characterized in that: The rotation drive assembly (8) includes a driven gear (81), a drive motor (82) and a drive gear (83). The driven gear (81) is provided on the outer side of the rotating end of the rotary joint (9). The drive motor (82) is located on the front side of the moving plate (6). The output shaft of the drive motor (82) is fixedly connected to the center of the rear side of the drive gear (83). The drive gear (83) meshes with the driven gear (81).
5. The oral cavity moistening device for oral examination according to claim 1, characterized in that: The upper and lower surfaces of the operating table (1) are symmetrically provided with threaded holes (18) of the through groove (2) that are connected to each other. A screw (20) is threaded in the threaded hole (18). A knob (19) is provided on the outer end of the screw (20) located outside the operating table (1). An elastic clamp (21) for clamping and fixing the oral cavity expansion device is provided on the inner end of the screw (20) located inside the through groove (2).
6. The oral cavity moistening device for oral examination according to claim 1, characterized in that: The operating table (1) has connecting plates (23) integrally provided symmetrically on the left and right sides of the rear side. The outer sides of the two connecting plates (23) are respectively connected to support plates (24) via connecting shafts (25) and damping bearings. The rear ends of the two support plates (24) are integrally provided with bases (26). Fixed holes (27) are evenly distributed on the bases (26). Adjustment holes (29) located outside the connecting shafts (25) are arranged in a ring along the circumferential direction on the outer side of the connecting plates (23). Limiting holes (28) are provided on the outer side of the support plates (24). Limiting pins (30) are movably inserted into one of the corresponding adjustment holes (29) of the limiting holes (28).
7. The oral cavity moistening device for oral examination according to claim 3, characterized in that: The controller (22) and the battery (31) are arranged sequentially on the outside of the fixed frame (51).
8. The oral cavity moistening device for oral examination according to claim 1, characterized in that: The elastic retaining ring (16) has a slot (17) on the side away from the connecting seat (13).