An oral distraction device
By introducing positioning and telescopic components into the oral cavity opening device, combining threaded rods and trapezoidal slopes to adjust the opening spacing, and integrating a small flashlight and reflector, the problems of unstable positioning and independent lighting in existing devices are solved, achieving stable opening and efficient lighting effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LULIANG PEOPLES HOSPITAL (LÜLIANG HOSPITAL AFFILIATED TO SHANXI MEDICAL UNIV ELEVENTH CLINICAL COLLEGE OF SHANXI MEDICAL UNIV)
- Filing Date
- 2026-04-14
- Publication Date
- 2026-07-03
AI Technical Summary
Existing oral retraction devices lack positioning stability, are prone to displacement and tilting, and are difficult to adjust the retraction spacing precisely. Furthermore, traditional devices require additional fixation, which affects operational efficiency, and independent lighting equipment increases labor costs and the risk of light deviation.
An oral cavity opening device was designed, which uses upper and lower dental sleeves with positioning and telescopic components. Combined with threaded rods and trapezoidal slopes, it can accurately adjust the opening distance and integrate a small flashlight and reflector to achieve integrated lighting and avoid the need for handheld lighting equipment.
It achieves stable positioning of the spreading device, adapts to the spreading needs of different oral cavity areas, improves operating efficiency, reduces labor costs, provides flexible lighting, and enhances the clarity of the operating field of vision.
Smart Images
Figure CN122320441A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of oral treatment equipment technology, specifically to an oral cavity opening device. Background Technology
[0002] In clinical procedures such as oral examinations, fillings, and extractions, as well as in home oral care, oral retraction tools are key auxiliary equipment to ensure the smooth progress of these procedures.
[0003] Existing oral retraction devices generally suffer from insufficient positioning stability. Most products lack effective limiting structures, making it easy for the upper and lower braces to shift or tilt during retraction, resulting in poor retraction effect and potential friction damage to oral soft tissues. Secondly, existing devices mostly use simple mechanical telescopic structures, making it difficult to precisely control the retraction distance, which cannot meet the diverse needs from minor observation to major surgery. Moreover, the adjustment process is complex and laborious, and some devices require additional fixation to maintain the retraction state, occupying the hands of medical staff and affecting work efficiency. In addition, in traditional oral procedures, lighting equipment and retraction tools are independent of each other, requiring a dedicated person to hold the light, creating a coordination problem of "one person operating, one person holding the light." This not only increases labor costs but also easily affects the operating field of vision due to light deviation. Therefore, it is necessary to propose an oral retraction device. Summary of the Invention
[0004] To address the problems in the prior art, the present invention provides an oral cavity opening device.
[0005] The technical solution adopted by this invention to solve its technical problem is: an oral cavity opening device, including an upper dental sleeve and a lower dental sleeve, a positioning component is provided on the outer side wall of the upper dental sleeve and the lower dental sleeve, a telescopic component is provided between the upper dental sleeve and the lower dental sleeve, a T-shaped groove is formed on the lower surface of the upper dental sleeve, a T-shaped slider is slidably connected in the T-shaped groove, the lower end of the T-shaped slider extends to the outside of the upper dental sleeve and is fixedly connected to a support block, a moving groove is formed on the lower surface of the support block, and a moving component is slidably connected in the moving groove. The movable block has a threaded hole through it, and a threaded rod is threadedly connected inside the threaded hole. One end of the threaded rod is rotatably connected to the wall of the movable groove via a bearing. The lower end of the movable block extends outside the support block and is fixedly connected to a pushing block. The lower surface of the pushing block has a trapezoidal slope that abuts against the upper surface of the lower tooth sleeve. A threaded sleeve is fixedly connected to the outer wall of the pushing block. A small flashlight is threadedly installed inside the threaded sleeve, and a reflector is fixedly installed at the output end of the small flashlight.
[0006] Specifically, the positioning component includes an arc-shaped upper tooth positioning groove and an arc-shaped lower tooth positioning groove. The arc-shaped upper tooth positioning groove is formed on the upper surface of the upper tooth brace, and the arc-shaped lower tooth positioning groove is formed on the lower surface of the lower tooth brace.
[0007] Specifically, the telescopic assembly includes two storage slots and two positioning rods. The two storage slots are respectively located on the two sides of the lower surface of the upper dental brace. The two positioning rods are respectively fixedly installed on the two sides of the upper surface of the lower dental brace. The upper end of the positioning rod extends into the storage slot. A lifting cavity is formed inside the positioning rod. A fixing hole is formed through the upper cavity wall of the lifting cavity. A lifting block is slidably connected inside the lifting cavity. A fixing rod is fixedly connected to the upper surface of the lifting block. The upper end of the fixing rod passes through the fixing hole and extends into the storage slot. The upper end of the fixing rod is fixedly connected to the top wall of the storage slot.
[0008] Specifically, the other end of the threaded rod passes through the moving block and extends to the outside of the support block, and a rotating handle is fixedly installed at the end of the threaded rod located outside the support block.
[0009] Specifically, the lower surface of the trapezoidal slope is alternately arranged with horizontal and inclined surfaces, and the horizontal surface of the trapezoidal slope abuts against the upper surface of the lower dental sleeve.
[0010] Specifically, the upper and lower dental braces are arranged in parallel, and the T-shaped groove is arc-shaped, with the curvature of the T-shaped groove matching the curvature of the upper and lower dental braces.
[0011] Specifically, the small flashlight has threads on its outer side wall, and the small flashlight is connected to the threaded sleeve through the threads. The small flashlight is also located on the outer side wall of the push block near the top.
[0012] Specifically, the upper surface of the support block is arranged to abut against the lower surface of the upper dental brace.
[0013] The beneficial effects of this invention are as follows: The oral cavity retraction device of this invention precisely limits the vertical lifting and lowering of the upper and lower dental sleeves through a telescopic component, effectively avoiding lateral deviation and tilting during retraction. The support block moves flexibly along the arc-shaped T-groove using a T-shaped slider, allowing for convenient adjustment of the front and rear positions of the retraction outlet according to the surgical or observation needs of different oral regions such as incisors and molars, making it highly adaptable. Simultaneously, the threaded rod drives the push block to move, utilizing a trapezoidal slope to achieve precise adjustment of the retraction spacing, while its horizontal plane provides stable support, meeting diverse retraction needs from minor observation to major surgeries. Furthermore, the device integrates a threaded sleeve and a small flashlight, achieving integrated, hand-held lighting, solving the traditional problem of "one person operating, one person holding the light," and improving work efficiency. The flashlight's insertion depth is adjustable via a threaded connection, and with a reflector, the illumination range and angle can be flexibly adjusted, avoiding direct light stimulation, enhancing local brightness, and clearly presenting oral details, providing strong support for precise operation. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a front view of the external structure of an oral cavity opening device provided by the present invention; Figure 2 A top view of the connection structure of the T-shaped slider, support block and push block of an oral cavity opening device provided by the present invention; Figure 3 A bottom view of the connection structure of the T-shaped slider, support block and push block of the oral cavity opening device provided by the present invention; Figure 4 An internal cross-sectional view of a telescopic component of an oral cavity opening device provided by the present invention; Figure 5 This is a schematic diagram of the upper dental sleeve of an oral cavity opening device provided by the present invention; Figure 6 This is a schematic diagram of the structure of the lower dental sleeve of an oral cavity opening device provided by the present invention; Figure 7 This is a schematic diagram of the structure of the push block of an oral cavity opening device provided by the present invention.
[0016] In the diagram: 1. Upper tooth sleeve; 2. Lower tooth sleeve; 3. T-shaped groove; 4. T-shaped slider; 5. Support block; 6. Moving part; 7. Moving block; 8. Threaded hole; 9. Threaded rod; 10. Push block; 11. Trapezoidal ramp; 12. Threaded sleeve; 13. Small flashlight; 14. Reflector; 15. Arc-shaped upper tooth positioning groove; 16. Arc-shaped lower tooth positioning groove; 17. Storage groove; 18. Positioning rod; 19. Lifting cavity; 20. Fixing hole; 21. Lifting block; 22. Fixing rod; 23. Rotating handle. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0018] like Figures 1-7 As shown, the present invention provides the following technical solution: Example 1: An oral cavity opening device includes an upper dental sleeve 1 and a lower dental sleeve 2. Positioning components are provided on the outer walls of the upper dental sleeve 1 and the lower dental sleeve 2. A telescopic component is provided between the upper dental sleeve 1 and the lower dental sleeve 2. A T-shaped groove 3 is formed on the lower surface of the upper dental sleeve 1. A T-shaped slider 4 is slidably connected within the T-shaped groove 3. The lower end of the T-shaped slider 4 extends outside the upper dental sleeve 1 and is fixedly connected to a support block 5. A moving groove 6 is formed on the lower surface of the support block 5. A moving block 7 is slidably connected within the moving groove 6. A threaded hole 8 is formed through the moving block 7. A threaded rod 9 is threaded into the hole 8. One end of the threaded rod 9 is rotatably connected to the wall of the moving groove 6 via a bearing. The lower end of the moving block 7 extends to the outside of the support block 5 and is fixedly connected to a pushing block 10. A trapezoidal slope 11 is formed on the lower surface of the pushing block 10. The trapezoidal slope 11 abuts against the upper surface of the lower tooth sleeve 2. A threaded sleeve 12 is fixedly connected to the outer wall of the pushing block 10. A small flashlight 13 is installed inside the threaded sleeve 12 via threads. The small flashlight 13 is a rechargeable LED cold light source. A reflector 14 is fixedly installed at the output end of the small flashlight 13. When using it, the following steps are included: First, open your mouth, then put the upper teeth bracket 1 and the lower teeth bracket 2 into your mouth and place them between your upper and lower teeth. Then you can bite your upper and lower teeth so that they are inserted into the arc-shaped upper tooth positioning groove 15 and the arc-shaped lower tooth positioning groove 16. The second step is to push the support block 5. The support block 5 moves within the T-shaped groove 3 via the T-shaped slider 4, so that the support block 5 moves along the track of the T-shaped groove 3 to the edge between the upper dental brace 1 and the lower dental brace 2. The opposite position can be selected according to the position required for surgery or observation. Third step: After adjustment, the threaded rod 9 can be rotated by turning the handle 23. The threaded rod 9 drives the moving block 7 to move through the engagement with the threaded hole 8. The moving block 7 moves parallel in the moving groove 6. The moving block 7 drives the pushing block 10 to move. The pushing block 10 pushes the lower dental sleeve 2 down through the inclined surface of the trapezoidal slope 11 (when the upper dental sleeve 1 and the lower dental sleeve 2 are far apart, the fixed rod 22 and the lifting block 21 will slide in the lifting cavity 19 and the fixed hole 20, so that the upper dental sleeve 1 and the lower dental sleeve 2 can only move vertically, thereby avoiding the upper dental sleeve 1 and the lower dental sleeve 2 from shifting during the lifting process). This increases the distance between the upper dental sleeve 1 and the lower dental sleeve 2. The horizontal surface of the trapezoidal slope 11 abuts against the lower dental sleeve 2, and the inclined surface of the trapezoidal slope 11 pushes the lower dental sleeve 2 to support it, thereby opening the oral cavity. Fourth step: Then, the small flashlight 13 can be rotated so that it moves into the oral cavity under the support of the threaded sleeve 12. When its lighting end enters the oral cavity, the small flashlight 13 can be turned on, so that the reflector 14 reflects the light of the small flashlight 13 to illuminate the inside of the oral cavity. No manual hand-held operation is required. The position of the lighting can be adjusted by slightly rotating the small flashlight 13 and the reflector 14 again according to the real-time needs of use.
[0019] Example 2: The technical solutions in this example that differ from Example 1 include: The positioning component includes an arc-shaped upper tooth positioning groove 15 and an arc-shaped lower tooth positioning groove 16. Both the arc-shaped upper tooth positioning groove 15 and the arc-shaped lower tooth positioning groove 16 are fitted with medical silicone pads. The arc-shaped upper tooth positioning groove 15 is located on the upper surface of the upper dental sleeve 1, and the arc-shaped lower tooth positioning groove 16 is located on the lower surface of the lower dental sleeve 2. The upper teeth of the oral cavity bite within the arc-shaped upper tooth positioning groove 15, while the lower teeth bite within the arc-shaped lower tooth positioning groove 16. The telescopic component includes two storage slots 17 and two positioning rods 18. The two storage slots 17 are respectively located on the two side edges of the lower surface of the upper dental sleeve 1, and the two positioning rods 18 are respectively fixedly installed on the two side edges of the upper surface of the lower dental sleeve 2. The upper end of the positioning rod 18... Extending into the storage slot 17, the positioning rod 18 has a lifting cavity 19 inside. A fixing hole 20 is formed through the upper wall of the lifting cavity 19. A lifting block 21 is slidably connected inside the lifting cavity 19. A fixing rod 22 is fixedly connected to the upper surface of the lifting block 21. The upper end of the fixing rod 22 passes through the fixing hole 20 and extends into the storage slot 17. The upper end of the fixing rod 22 is fixedly connected to the top wall of the storage slot 17. When the upper tooth sleeve 1 and the lower tooth sleeve 2 are far apart, the fixing rod 22 and the lifting block 21 will slide within the lifting cavity 19 and the fixing hole 20, ensuring that the upper tooth sleeve 1 and the lower tooth sleeve 2 can only move vertically, thus preventing them from shifting during the lifting process. The threaded rod 9... The other end of the threaded rod 9 passes through the moving block 7 and extends to the outside of the support block 5. A rotating handle 23 is fixedly installed at one end of the threaded rod 9 outside the support block 5. The threaded rod 9 can be rotated by rotating the handle 23. The lower surface of the trapezoidal slope 11 is alternately set with horizontal and inclined surfaces. The horizontal surface of the trapezoidal slope 11 abuts against the upper surface of the lower tooth sleeve 2. The trapezoidal surface of the trapezoidal slope 11 is provided with anti-slip texture to increase the friction between the trapezoidal slope 11 and the lower tooth sleeve 2 and prevent it from sliding at will. The outer wall of the push block 10 located above the trapezoidal surface of the trapezoidal slope 11 is provided with a scale to facilitate the identification of the lifting height by the scale on the push block 10. When the trapezoidal slope 11 abuts against the lower tooth sleeve 2, the inclined surface of the trapezoidal slope 11 will push The lower tooth sleeve 2 descends, and the horizontal plane of the trapezoidal slope 11 abuts against the lower tooth sleeve 2 to support the upper tooth sleeve 1. The upper tooth sleeve 1 and the lower tooth sleeve 2 are arranged in parallel, and the T-shaped slide 3 is arc-shaped, with the arc of the T-shaped slide 3 matching the arc of the upper tooth sleeve 1 and the lower tooth sleeve 2. This allows the T-shaped slider 4 to move along the track of the T-shaped slide 3 between the upper tooth sleeve 1 and the lower tooth sleeve 2. The outer wall of the small flashlight 13 is provided with threads, and the small flashlight 13 is threadedly connected to the threaded sleeve 12. The small flashlight 13 is set on the outer wall of the push block 10 near the top, and the installation position and angle of the small flashlight 13 can be adjusted according to the needs of use.The upper surface of the support block 5 is arranged to abut against the lower surface of the upper dental sleeve 1. The lower dental sleeve 2 abuts against the trapezoidal block 11 on the push block 10 to support the push block 10. The push block 10 supports the upper dental sleeve 1 through the support block 5.
[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. An oral cavity opening device, comprising an upper dental sleeve (1) and a lower dental sleeve (2), wherein positioning components are provided on the outer side walls of the upper dental sleeve (1) and the lower dental sleeve (2), and a telescopic component is provided between the upper dental sleeve (1) and the lower dental sleeve (2), characterized in that, The lower surface of the upper dental sleeve (1) is provided with a T-shaped groove (3), and a T-shaped slider (4) is slidably connected in the T-shaped groove (3). The lower end of the T-shaped slider (4) extends to the outside of the upper dental sleeve (1) and is fixedly connected to a support block (5). The lower surface of the support block (5) is provided with a moving groove (6), and a moving block (7) is slidably connected in the moving groove (6). A threaded hole (8) is provided through the moving block (7), and a threaded rod (9) is threadedly connected in the threaded hole (8). One end of the threaded rod (9) is connected to a bearing. Rotary connection to the wall of the moving slot (6), the lower end of the moving block (7) extends to the outside of the support block (5) and is fixedly connected to the push block (10), the lower surface of the push block (10) is provided with a trapezoidal slope (11), the trapezoidal slope (11) abuts against the upper surface of the lower tooth sleeve (2), a threaded sleeve (12) is fixedly connected to the outer wall of the push block (10), a small flashlight (13) is installed in the threaded sleeve (12) by threads, and a reflector (14) is fixedly installed at the output end of the small flashlight (13).
2. The oral cavity opening device according to claim 1, characterized in that: The positioning component includes an arc-shaped upper tooth positioning groove (15) and an arc-shaped lower tooth positioning groove (16). The arc-shaped upper tooth positioning groove (15) is located on the upper surface of the upper tooth sleeve (1), and the arc-shaped lower tooth positioning groove (16) is located on the lower surface of the lower tooth sleeve (2).
3. The oral cavity opening device according to claim 1, characterized in that: The telescopic assembly includes two storage slots (17) and two positioning rods (18). The two storage slots (17) are respectively opened on the two sides of the lower surface of the upper dental sleeve (1). The two positioning rods (18) are respectively fixedly installed on the two sides of the upper surface of the lower dental sleeve (2). The upper end of the positioning rod (18) extends into the storage slot (17). The positioning rod (18) has a lifting cavity (19) inside. The upper cavity wall of the lifting cavity (19) has a fixing hole (20) through it. The lifting block (21) is slidably connected in the lifting cavity (19). The upper surface of the lifting block (21) is fixedly connected to a fixing rod (22). The upper end of the fixing rod (22) passes through the fixing hole (20) and extends into the storage slot (17). The upper end of the fixing rod (22) is fixedly connected to the top wall of the storage slot (17).
4. The oral cavity opening device according to claim 1, characterized in that: The other end of the threaded rod (9) passes through the moving block (7) and extends to the outside of the support block (5). A rotating handle (23) is fixedly installed at the end of the threaded rod (9) located outside the support block (5).
5. The oral cavity opening device according to claim 1, characterized in that: The lower surface of the trapezoidal slope (11) is alternately arranged with horizontal and inclined surfaces, and the horizontal surface of the trapezoidal slope (11) abuts against the upper surface of the lower tooth sleeve (2).
6. The oral cavity opening device according to claim 1, characterized in that: The upper dental sleeve (1) and the lower dental sleeve (2) are arranged in parallel, and the T-shaped groove (3) is arranged in an arc shape, and the arc of the T-shaped groove (3) matches the arc of the upper dental sleeve (1) and the lower dental sleeve (2).
7. The oral cavity opening device according to claim 1, characterized in that: The small flashlight (13) has threads on its outer side wall, and the small flashlight (13) is connected to the threaded sleeve (12) by the threads. The small flashlight (13) is located on the outer side wall of the push block (10) near the top.
8. The oral cavity opening device according to claim 1, characterized in that: The upper surface of the support block (5) is set in an abutting position against the lower surface of the upper dental sleeve (1).