Adjustable lip distraction device for department of stomatology

Abstract

The invention relates to the technical field of distraction devices, and particularly discloses an adjustable lip distraction device for the department of stomatology, the adjustable lip distraction device for the department of stomatology achieves the purposes of adapting to multiple sizes and distraction, the device is supported by a fixing bottom plate, the distraction degree of the device is adjusted by an adjusting device, and the adjustable lip distraction device for the department of stomatology is convenient to use. The deflection device keeps a certain moving angle for the distraction devices, so that a certain angle is formed between the multiple distraction devices during use, the oral cavity is supported, examination is facilitated, the lighting device and the adjusting device are matched to form a lever structure, supporting at different angles and different opening and closing degrees is achieved, and the supporting effect is good. Therefore, the opening operation is convenient.

Description

Technical Field

[0001] This invention relates to the field of lip opening device technology, specifically an adjustable lip opening device for dental use. Background Technology

[0002] Advances in Materials Science: With the continuous development of materials science, new biocompatible materials are constantly emerging, such as silicone and polyurethane. These materials possess excellent flexibility, elasticity, and comfort, providing a material basis for designing higher-quality lip retractors. Application of 3D Printing Technology: 3D printing technology can be customized based on the patient's oral model, creating a retractor that highly matches the patient's oral structure, improving the device's fit and comfort. Integration of Intelligent Technology: Some intelligent sensor and actuator technologies are beginning to be applied in the medical device field, making it possible to achieve intelligent adjustment of lip retractors. For example, pressure sensors can monitor the force on the patient's lips in real time and automatically adjust the retractor force. Against this backdrop, developing a dental lip retractor that can be flexibly adjusted according to the individual patient's condition and treatment needs, while also possessing good comfort and multiple auxiliary functions, has significant practical implications.

[0003] Currently, similar tools have fixed sizes or limited adjustment ranges, making it difficult to adapt to the needs of different ages (children / adults), different face shapes, different mouth opening degrees (such as patients with temporomandibular joint disorders), and different surgical sites (anterior teeth / posterior teeth). If they are too small, they cannot effectively open the mouth, while if they are too large, they may cause discomfort or damage. Their simple structure makes them prone to displacement or slippage, especially in a saliva-moistened environment. Some designs may themselves obstruct part of the surgical field or hinder the entry and exit of instruments. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: an adjustable lip opening device for dental use, comprising a fixed base plate, an adjustment device rotatably connected to the top of the fixed base plate, a deflection device fixedly connected to the side of the fixed base plate, a lighting device rotatably connected to the top of the deflection device, and an opening device fixedly connected to the side of the deflection device.

[0005] The adjustment device includes a first threaded sleeve, a first rotating seat rotatably connected to the bottom of the first threaded sleeve, a first rotating column fixedly connected to the bottom of the first rotating seat, a first stud threadedly connected to the top of the first threaded sleeve, and a second rotating column fixedly connected to the top of the first stud. The first rotating column is rotatably connected to the top of the fixed base plate via a rotating shaft. During adjustment, the first threaded sleeve is manually rotated, causing the first stud to reciprocate inside the first threaded sleeve, thus facilitating the adjustment of the distance between the second rotating column and the first rotating column, thereby facilitating height adjustment. The rotating shaft design of the second rotating column and the stepped hole avoids straight up-and-down height adjustment, which is not suitable for opening and closing the mouth at a certain angle. At the same time, the threaded fit design of the first stud and the first threaded sleeve helps to maintain a fixed position after adjustment to the designated position, thus facilitating long-term observation and operation.

[0006] Preferably, the deflection device includes a deflection base plate. A rotating hole is provided on one side of the top of the deflection base plate, and a stepped hole is provided on the side of the top of the deflection base plate away from the rotating hole. A rotating shaft is slidably connected to the inner wall of the stepped hole. A deflection slot is provided on the side of the rotating shaft, and a connecting plate is fixedly connected to the bottom of the deflection slot. The side of the connecting plate is fixedly connected to the side of the opening device. The deflection base plate is rotatably connected to the bottom of the lighting device through the rotating hole. The side of the deflection base plate is fixedly connected to the side of the fixed base plate. During adjustment, the first rotating column drives the fixed base plate to deflect at a certain angle, thereby adjusting the opening degree. The first rotating column drives the deflection base plate to move upward. The stepped hole at the top of the deflection base plate and the side of the deflection slot are tilted at a certain angle and locked together, facilitating fixation. Furthermore, the circular design of the rotating shaft allows the deflection base plate to rotate along the side of the rotating shaft, enabling adjustments at different angles during opening, facilitating observation and preventing obstruction of the opening device.

[0007] Preferably, the lighting device includes a second threaded sleeve, a magnetic strip fixedly connected to the side of the second threaded sleeve, a sliding sleeve fitted and slidably connected to the side of the second threaded sleeve, a lighting lamp fixedly connected to the side of the sliding sleeve, a second rotating seat rotatably connected to the bottom of the second threaded sleeve, a third rotating column fixedly connected to the bottom of the second rotating seat, a second stud threadedly connected to the top of the second threaded sleeve, and a fourth rotating column fixedly connected to the top of the second stud. The third rotating column is rotatably connected to the top of the deflection base plate through a rotating hole. Rotating the second threaded sleeve causes the second stud to reciprocate inside the second threaded sleeve, thereby changing the distance between the third and fourth rotating columns. This facilitates lever adjustment in conjunction with the first threaded sleeve, allowing for adjustment of different vertical opening and closing distances, thus adapting to different oral cavity conditions and improving the versatility of the device. Moving the sliding sleeve causes the lighting lamp to move up and down, illuminating the inside of the oral cavity, facilitating observation of the oral cavity's internal condition. The magnetic strip and the sliding sleeve allow the lighting lamp to be fixed in different positions, facilitating observation from different locations.

[0008] Preferably, the spreading device includes a spreading base plate, an arc-shaped limiting plate is fixedly connected to one side of the top of the spreading base plate, a lip support component is slidably connected to the side of the spreading base plate, an oral cavity support component is fixedly connected to the portion of the spreading base plate located on one side of the lip support component, and the side of the spreading base plate is fixedly connected to the side of the connecting plate of the deflection base plate.

[0009] Preferably, the lip support assembly includes a sliding seat, a first slide bar fixedly connected to the bottom side of the sliding seat, a sliding rod slidably connected through the side of the sliding seat, a limit cap fixedly connected to the side of the sliding rod, a first spring sleeved and slidably connected to the side of the sliding rod, a spreading assembly fixedly connected to the side of the sliding rod, the sliding seat slidably connected to the side of the spreading base plate via the first slide bar, and the bottom of the spreading assembly contacting the top of the spreading base plate.

[0010] Preferably, the opening assembly includes a movable base, with an arc-shaped connecting strip fixedly connected to the top of the movable base, and an arc-shaped opening strip fixedly connected to the top of the arc-shaped connecting strip. The side of the movable base is fixedly connected to the side of the sliding rod, and the bottom of the movable base contacts the top of the opening base plate. When the teeth bite the arc-shaped limiting plate, the limiting cap is manually pulled, which pulls the sliding rod to move. The sliding rod drives the movable base to move, compressing the first spring during the movement, thereby generating elastic force. This causes the movable base to move along the top of the opening base plate, so that the top of the arc-shaped opening strip contacts the bottom of the lips, facilitating the opening of the lips. Under the combined action of multiple sets of arc-shaped opening strips, the lip muscles are opened while retaining an observation window, making it easy to observe the internal condition of the lips. Under the elastic force of the first spring, the arc-shaped opening strip is pressed tightly against the surface of the lip muscles. The sliding seat slides on the side of the opening base plate through the cooperation of the sliding seat and the first sliding strip, thereby adjusting the distance between multiple sets of sliding seats, making it convenient for different people to use.

[0011] Preferably, the oral cavity support assembly includes a sliding shell, a first groove is provided on the top of the sliding shell, a rotating seat is fixedly connected to the side of the sliding shell, a fixed seat is rotatably connected to the top of the rotating seat via a rotating shaft, a brake rack is fixedly connected to the top and bottom of the inner wall of the sliding shell, a moving component is slidably connected to the inner wall of the sliding shell, and the side of the fixed seat is fixedly connected to the side of the supporting base plate.

[0012] Preferably, the movable component includes a movable plate with a second groove on its top. A spring sheet is fixedly connected to the side of the movable plate, and a braking groove is formed on the side of the spring sheet. A movable block is fixedly connected to the side of the spring sheet, and the bottom of the movable block contacts the top of the braking rack. The movable plate is slidably connected to the inner wall of the sliding housing. In use, the movable block is manually pressed, and the spring sheet undergoes elastic deformation under the pressure of the movable block, thereby causing the braking groove to disengage from the surface of the braking rack. This facilitates the adjustment of the movable plate's position according to the oral cavity depth of different users. The second groove facilitates the engagement of muscles, thereby enhancing the fixation of muscles and facilitating opening. The movable plate's adjustment adapts to the oral cavity depth of different people and provides support for deep gums, facilitating internal observation. The design of the braking groove and braking rack prevents slippage after adjustment, making it suitable for different users. Furthermore, the rotation design of the rotating seat and fixed seat adapts to the oral cavity shape of different people, facilitating oral cavity opening for different users.

[0013] This invention provides an adjustable lip opening device for dental use. It has the following beneficial effects:

[0014] 1. This dental adjustable lip retractor is equipped with a first threaded sleeve. During adjustment, the first threaded sleeve is manually rotated. The rotation of the first threaded sleeve drives the first stud to reciprocate inside the first threaded sleeve, thereby facilitating the adjustment of the distance between the second rotating post and the first rotating post, thus facilitating height adjustment. The rotating shaft design of the second rotating post and the stepped hole avoids straight up and down height adjustment, which is not suitable for opening and closing the mouth at a certain angle. At the same time, the threaded fit design of the first stud and the first threaded sleeve helps to maintain a fixed position after adjustment to the designated position, thus facilitating long-term observation and operation.

[0015] 2. This dental adjustable lip opening device is equipped with a first rotating column. During adjustment, the first rotating column drives the fixed base plate to deflect at a certain angle, thereby adjusting the opening degree. The first rotating column drives the deflection base plate to move upward. The stepped hole on the top of the deflection base plate and the side of the deflection slot are tilted at a certain angle and locked together, which facilitates fixation. Furthermore, the circular design of the rotating shaft allows the deflection base plate to rotate along the side of the rotating shaft, thereby adjusting the opening angle at different times, which facilitates observation and prevents the opening device from being obstructed.

[0016] 3. This dental adjustable lip opening device is equipped with a second threaded sleeve. The rotation of the second threaded sleeve drives the second stud to reciprocate inside the second threaded sleeve, thereby changing the distance between the third and fourth rotating studs. This facilitates the adjustment of the lever in conjunction with the first threaded sleeve, allowing for different vertical opening and closing distances. This makes it easier to adapt to different oral cavity conditions, improving the versatility of the device. The sliding sleeve moves, causing the lighting lamp to move up and down, illuminating the inside of the oral cavity for easy observation. The lighting lamp is fixed in different positions through the cooperation of a magnetic strip and the sliding sleeve, facilitating observation from different locations.

[0017] 4. This dental adjustable lip-opening device features an arc-shaped limiting plate. When the teeth bite down on the arc-shaped limiting plate, manually pulling the limiting cap moves the sliding rod, which in turn moves the movable base. During this movement, the sliding rod compresses the first spring, generating elasticity. This elasticity causes the movable base to move along the top of the opening plate, bringing the top of the arc-shaped opening strip into contact with the bottom of the lips. This facilitates lip opening. The combined action of multiple arc-shaped opening strips opens the lip muscles while maintaining an observation window for viewing the internal condition of the lips. The elasticity of the first spring keeps the arc-shaped opening strips close to the surface of the lip muscles. The sliding seat, in conjunction with the first sliding strip, slides along the side of the opening plate, adjusting the distance between the multiple sliding seats to accommodate different users.

[0018] 5. This dental adjustable lip retractor is equipped with a movable block. During use, manually pressing the movable block causes a spring plate to elastically deform, disengaging the brake groove from the surface of the brake rack. This facilitates adjustment of the movable plate's position according to different users' oral cavity depths. The second groove facilitates muscle engagement, enhancing muscle fixation and aiding in retracting. The movable plate's adjustment adapts to different oral cavity depths and provides support for deep gums, facilitating internal observation. The design of the brake groove and brake rack prevents slippage after adjustment, ensuring adaptability for various users. Furthermore, the rotating and fixed bases adapt to different oral cavity shapes, facilitating retracting for diverse patients. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the adjustable lip opening device for dental use according to the present invention.

[0020] Figure 2 This is a schematic diagram of the regulating device structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the deflection device of the present invention;

[0022] Figure 4 This is a schematic diagram of the lighting device structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the spreading device of the present invention;

[0024] Figure 6 This is a schematic diagram of the lip support component structure of the present invention;

[0025] Figure 7This is a schematic diagram of the structure of the extended component of the present invention;

[0026] Figure 8 This is a schematic diagram of the oral support component structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the mobile component of the present invention.

[0028] In the diagram: 1. Fixed base plate; 2. Adjustment device; 3. Deflection device; 4. Lighting device; 5. Spreading device; 201. First threaded sleeve; 202. First rotating seat; 203. First rotating column; 204. First stud; 205. Second rotating column; 301. Deflection base plate; 302. Rotation hole; 303. Stepped hole; 304. Rotating shaft; 305. Deflection slot; 306. Connecting plate; 401. Second threaded sleeve; 402. Magnet strip; 403. Sliding sleeve; 404. Lighting lamp; 405. Second rotating seat; 406. Third rotating column; 407. Second stud; 408. Fourth rotating column; 501. Spreading base plate; 502. Arc-shaped limiter. 503. Plate; 504. Lip support assembly; 505. Oral cavity support assembly; 5031. Sliding seat; 5032. First slide bar; 5033. Sliding rod; 5034. Limit cap; 5035. First spring; 5036. Spreading assembly; 50361. Moving base; 50362. Arc-shaped connecting bar; 50363. Arc-shaped spreading bar; 5041. Sliding outer shell; 5042. First groove; 5043. Rotating seat; 5044. Fixed seat; 5045. Brake rack; 5046. Moving assembly; 50461. Moving plate; 50462. Second groove; 50463. Spring plate; 50464. Brake groove; 50465. Moving block. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-2 The present invention provides a technical solution: an adjustable lip opening device for dental use, comprising a fixed base plate 1, an adjustment device 2 rotatably connected to the top of the fixed base plate 1, a deflection device 3 fixedly connected to the side of the fixed base plate 1, a lighting device 4 rotatably connected to the top of the deflection device 3, and an opening device 5 fixedly connected to the side of the deflection device 3.

[0031] The fixed base plate 1 supports the device, the adjusting device 2 adjusts the opening degree of the device, the deflecting device 3 maintains a certain angle of movement for the opening device 5, so that the multiple opening devices 5 present a certain angle when in use, thereby supporting the oral cavity and facilitating inspection. The lighting device 4 cooperates with the adjusting device 2 to form a lever structure, thereby providing support at different angles and different opening degrees, thus facilitating the opening operation.

[0032] The adjusting device 2 includes a first threaded sleeve 201, a first rotating seat 202 rotatably connected to the bottom of the first threaded sleeve 201, a first rotating column 203 fixedly connected to the bottom of the first rotating seat 202, a first stud 204 threadedly connected to the top of the first threaded sleeve 201, a second rotating column 205 fixedly connected to the top of the first stud 204, and the first rotating column 203 rotatably connected to the top of the fixed base plate 1 via a rotating shaft.

[0033] During adjustment, the first threaded sleeve 201 is manually rotated. The rotation of the first threaded sleeve 201 drives the first stud 204 to reciprocate inside the first threaded sleeve 201, which facilitates the adjustment of the distance between the second rotating column 205 and the first rotating column 203, thus facilitating height adjustment. The pivot design of the second rotating column 205 and the stepped hole 303 avoids straight up and down height adjustment, which is not suitable for opening and closing the mouth at a certain angle. At the same time, the threaded fit design of the first stud 204 and the first threaded sleeve 201 helps to keep it in a fixed position after adjustment to the specified position, which is beneficial for long-term observation and operation.

[0034] Please see Figures 1-4 The present invention provides a technical solution: the deflection device 3 includes a deflection base plate 301, a rotation hole 302 is provided on one side of the top of the deflection base plate 301, a stepped hole 303 is provided on the side of the top of the deflection base plate 301 away from the rotation hole 302, a rotating shaft 304 is slidably connected to the inner wall of the stepped hole 303, a deflection slot 305 is provided on the side of the rotating shaft 304, a connecting plate 306 is fixedly connected to the bottom of the deflection slot 305, the side of the connecting plate 306 is fixedly connected to the side of the supporting device 5, the deflection base plate 301 is rotatably connected to the bottom of the lighting device 4 through the rotation hole 302, and the side of the deflection base plate 301 is fixedly connected to the side of the fixed base plate 1.

[0035] During the adjustment process, the first rotating column 203 drives the fixed base plate 1 to deflect at a certain angle, thereby adjusting the opening and closing degree. The first rotating column 203 drives the deflection base plate 301 to move upward. The stepped hole 303 on the top of the deflection base plate 301 and the side of the deflection slot 305 are tilted and locked at a certain angle, which facilitates fixation. Furthermore, the circular design of the rotating shaft 304 allows the deflection base plate 301 to rotate along the side of the rotating shaft 304, thereby adjusting the angle at different angles when opening, which facilitates observation and prevents the opening device from being obstructed.

[0036] The lighting device 4 includes a second threaded sleeve 401, a magnet strip 402 fixedly connected to the side of the second threaded sleeve 401, a sliding sleeve 403 sleeved and slidably connected to the side of the second threaded sleeve 401, a lighting lamp 404 fixedly connected to the side of the sliding sleeve 403, a second rotating seat 405 rotatably connected to the bottom of the second threaded sleeve 401, a third rotating column 406 fixedly connected to the bottom of the second rotating seat 405, a second stud 407 threadedly connected to the top of the second threaded sleeve 401, a fourth rotating column 408 fixedly connected to the top of the second stud 407, and the third rotating column 406 rotatably connected to the top of the deflection base plate 301 through a rotating hole 302.

[0037] Rotating the second threaded sleeve 401 causes the second stud 407 to reciprocate inside the second threaded sleeve 401, thereby changing the distance between the third rotating column 406 and the fourth rotating column 408. This facilitates the adjustment of the lever by cooperating with the first threaded sleeve 201, allowing for adjustments to different vertical opening and closing distances. This makes it easier to adapt to different human oral cavity conditions, improving the versatility of the device. Moving the sliding sleeve 403 causes the lighting lamp 404 to move up and down, illuminating the inside of the oral cavity for easy observation. The magnetic strip 402, in cooperation with the sliding sleeve 403, fixes the lighting lamp 404 in different positions, facilitating observation from different locations.

[0038] Please see Figures 1-7 The present invention provides a technical solution: the spreading device 5 includes a spreading base plate 501, an arc-shaped limiting plate 502 is fixedly connected to one side of the top of the spreading base plate 501, a lip support component 503 is slidably connected to the side of the spreading base plate 501, an oral cavity support component 504 is fixedly connected to the part of the spreading base plate 501 located on one side of the lip support component 503, and the side of the spreading base plate 501 is fixedly connected to the side of the connecting plate 306 of the deflection base plate 301.

[0039] The lip support assembly 503 includes a sliding seat 5031, a first slide bar 5032 fixedly connected to the bottom side of the sliding seat 5031, a sliding rod 5033 extending through and slidably connected to the side of the sliding seat 5031, a limit cap 5034 fixedly connected to the side of the sliding rod 5033, a first spring 5035 sleeved and slidably connected to the side of the sliding rod 5033, and a spreading assembly 5036 fixedly connected to the side of the sliding rod 5033. The sliding seat 5031 is slidably connected to the side of the spreading base plate 501 via the first slide bar 5032, and the bottom of the spreading assembly 5036 contacts the top of the spreading base plate 501.

[0040] The expansion assembly 5036 includes a movable base 50361, an arc-shaped connecting strip 50362 fixedly connected to the top of the movable base 50361, an arc-shaped expansion strip 50363 fixedly connected to the top of the arc-shaped connecting strip 50362, a side of the movable base 50361 fixedly connected to the side of the sliding rod 5033, and a bottom of the movable base 50361 in contact with the top of the expansion base plate 501.

[0041] When the teeth bite down on the arc-shaped limiting plate 502, the limiting cap 5034 is manually pulled. The limiting cap 5034 moves the sliding rod 5033, which in turn moves the movable base 50361. During the movement of the sliding rod 5033, the first spring 5035 is compressed, causing the first spring 5035 to generate elastic force. This, in turn, moves the movable base 50361 along the top of the supporting base plate 501, so that the top of the arc-shaped supporting bar 50363 contacts the bottom of the lips, thus facilitating penetration. The lip opening mechanism, through the combined action of multiple sets of arc-shaped opening strips 50363, opens the lip muscles while maintaining an observation window, thus facilitating observation of the internal condition of the lips. Furthermore, under the elastic force of the first spring 5035, the arc-shaped opening strips 50363 are kept close to the surface of the lip muscles. Through the cooperation of the sliding seat 5031 and the first sliding strip 5032, the sliding seat 5031 slides on the side of the opening base plate 501, thereby adjusting the distance between the multiple sets of sliding seats 5031, making it convenient for different users.

[0042] Please see Figures 1-9 The present invention provides a technical solution: the oral cavity support component 504 includes a sliding shell 5041, the top of the sliding shell 5041 is provided with a first groove 5042, a rotating seat 5043 is fixedly connected to the side of the sliding shell 5041, the top of the rotating seat 5043 is rotatably connected to a fixed seat 5044 via a rotating shaft, a brake rack 5045 is fixedly connected to the top and bottom of the inner wall of the sliding shell 5041, a moving component 5046 is slidably connected to the inner wall of the sliding shell 5041, and the side of the fixed seat 5044 is fixedly connected to the side of the supporting base plate 501.

[0043] The moving assembly 5046 includes a moving plate 50461, a second groove 50462 on the top of the moving plate 50461, a spring plate 50463 fixedly connected to the side of the moving plate 50461, a brake groove 50464 on the side of the spring plate 50463, a moving block 50465 fixedly connected to the side of the spring plate 50463, the bottom of the moving block 50465 contacting the top of the brake rack 5045, and the moving plate 50461 slidably connected to the inner wall of the sliding housing 5041.

[0044] When in use, manually pressing the moving block 50465 causes the spring plate 50463 to elastically deform under the pressure of the moving block 50465, thereby disengaging the brake groove 50464 from the surface of the brake rack 5045. This facilitates the adjustment of the position of the moving plate 50461 according to the oral cavity depth of different users. The second groove 50462 facilitates the engagement of muscles, thereby enhancing the fixation of muscles and facilitating opening. The adjustment of the moving plate 50461 adapts to the oral cavity depth of different people and provides support for deep gums, facilitating internal observation. The design of the brake groove 50464 and the brake rack 5045 prevents slippage after adjustment, making it suitable for different users. At the same time, the rotation design of the rotating seat 5043 and the fixed seat 5044 adapts to the oral cavity shape of different people, facilitating the opening of the oral cavity for different users.

[0045] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An adjustable lip opening device for dental use, characterized in that: Includes a fixed base plate (1), an adjustment device (2) is rotatably connected to the top of the fixed base plate (1), a deflection device (3) is fixedly connected to the side of the fixed base plate (1), a lighting device (4) is rotatably connected to the top of the deflection device (3), and a spreading device (5) is fixedly connected to the side of the deflection device (3). The adjusting device (2) includes a first threaded sleeve (201), a first rotating seat (202) is rotatably connected to the bottom of the first threaded sleeve (201), a first rotating column (203) is fixedly connected to the bottom of the first rotating seat (202), a first stud (204) is threadedly connected to the top of the first threaded sleeve (201), a second rotating column (205) is fixedly connected to the top of the first stud (204), and the first rotating column (203) is rotatably connected to the top of the fixed base plate (1) through a rotating shaft.

2. The adjustable lip opening device for dental use according to claim 1, characterized in that: The deflection device (3) includes a deflection base plate (301). A rotating hole (302) is provided on one side of the top of the deflection base plate (301). A stepped hole (303) is provided on the side of the top of the deflection base plate (301) away from the rotating hole (302). A rotating shaft (304) is slidably connected to the inner wall of the stepped hole (303). A deflection slot (305) is provided on the side of the rotating shaft (304). A connecting plate (306) is fixedly connected to the bottom of the deflection slot (305). The side of the connecting plate (306) is fixedly connected to the side of the spreading device (5). The deflection base plate (301) is rotatably connected to the bottom of the lighting device (4) through the rotating hole (302). The side of the deflection base plate (301) is fixedly connected to the side of the fixed base plate (1).

3. The adjustable lip opening device for dental use according to claim 1, characterized in that: The lighting device (4) includes a second threaded sleeve (401), a magnet strip (402) is fixedly connected to the side of the second threaded sleeve (401), a sliding sleeve (403) is sleeved and slidably connected to the side of the second threaded sleeve (401), a lighting lamp (404) is fixedly connected to the side of the sliding sleeve (403), a second rotating seat (405) is rotatably connected to the bottom of the second threaded sleeve (401), a third rotating column (406) is fixedly connected to the bottom of the second rotating seat (405), a second stud (407) is threadedly connected to the top of the second threaded sleeve (401), a fourth rotating column (408) is fixedly connected to the top of the second stud (407), and the third rotating column (406) is rotatably connected to the top of the deflection base plate (301) through a rotating hole (302).

4. The adjustable lip opening device for dental use according to claim 1, characterized in that: The opening device (5) includes an opening base plate (501), an arc-shaped limiting plate (502) is fixedly connected to one side of the top of the opening base plate (501), a lip support assembly (503) is slidably connected to the side of the opening base plate (501), an oral cavity support assembly (504) is fixedly connected to the part of the opening base plate (501) located on one side of the lip support assembly (503), and the side of the opening base plate (501) is fixedly connected to the side of the connecting plate (306) of the deflection base plate (301).

5. The adjustable lip opening device for dental use according to claim 4, characterized in that: The lip support assembly (503) includes a sliding seat (5031), a first slide bar (5032) is fixedly connected to the bottom side of the sliding seat (5031), a sliding rod (5033) is slidably connected through the side of the sliding seat (5031), a limit cap (5034) is fixedly connected to the side of the sliding rod (5033), a first spring (5035) is sleeved and slidably connected to the side of the sliding rod (5033), a spreading assembly (5036) is fixedly connected to the side of the sliding rod (5033), the sliding seat (5031) is slidably connected to the side of the spreading base plate (501) through the first slide bar (5032), and the bottom of the spreading assembly (5036) is in contact with the top of the spreading base plate (501).

6. The adjustable lip opening device for dental use according to claim 5, characterized in that: The expansion assembly (5036) includes a movable base (50361), an arc-shaped connecting strip (50362) is fixedly connected to the top of the movable base (50361), an arc-shaped expansion strip (50363) is fixedly connected to the top of the arc-shaped connecting strip (50362), the side of the movable base (50361) is fixedly connected to the side of the sliding rod (5033), and the bottom of the movable base (50361) is in contact with the top of the expansion base plate (501).

7. The adjustable lip opening device for dental use according to claim 4, characterized in that: The oral cavity support assembly (504) includes a sliding shell (5041), a first groove (5042) is provided on the top of the sliding shell (5041), a rotating seat (5043) is fixedly connected to the side of the sliding shell (5041), a fixed seat (5044) is rotatably connected to the top of the rotating seat (5043) via a rotating shaft, a brake rack (5045) is fixedly connected to the top and bottom of the inner wall of the sliding shell (5041), a moving assembly (5046) is slidably connected to the inner wall of the sliding shell (5041), and the side of the fixed seat (5044) is fixedly connected to the side of the supporting base plate (501).

8. The adjustable lip opening device for dental use according to claim 7, characterized in that: The moving component (5046) includes a moving plate (50461), a second groove (50462) is provided on the top of the moving plate (50461), a spring plate (50463) is fixedly connected to the side of the moving plate (50461), a brake groove (50464) is provided on the side of the spring plate (50463), and a moving block (50465) is fixedly connected to the side of the spring plate (50463).

9. An adjustable lip-opening device for dental use according to claim 8, characterized in that: The bottom of the moving block (50465) contacts the top of the brake rack (5045), and the moving plate (50461) is slidably connected to the inner wall of the sliding housing (5041).

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