An oral expander

Abstract

This utility model discloses an oral expander, relating to the field of oral expander technology. The technical solution includes a handle assembly with a limiting component inside. Two limiting components are located on the outside of the handle assembly, with a spring between them. The handle assembly includes a handle with a through groove inside, and a limiting groove inside the through groove. The limiting component includes a sliding plate with a spring telescopic rod on one side and a rack fixed on the other side. The beneficial effect of this oral expander is that the limiting component, composed of the sliding plate, spring telescopic rod, rack, and gear, can quickly release and lock the limiting state of the expander support assembly. Medical personnel only need to simply move the sliding plate to flexibly adjust the distance between the two oral expanders in conjunction with the elasticity of the spring, accurately adapting to the needs of patients with different oral structures, age groups, and conditions, significantly improving the versatility and practicality of the expander.

Description

Technical Field

[0001] This utility model relates to the field of oral expander technology, and specifically to an oral expander. Background Technology

[0002] In the field of oral healthcare, oral expanders are a commonly used medical device, widely used in oral examinations, treatments, and surgeries. Their main function is to help patients keep their mouths open, providing medical staff with a clear field of vision and operating space.

[0003] Existing oral expanders often have fixed expansion spacing or extremely limited adjustment methods, which makes it difficult to achieve precise fit when facing patients with different oral structures, different age groups, and different conditions. Utility Model Content

[0004] To address this issue, this invention provides an oral expander that, through the cooperation of a limiting component and an expander support component, solves the problem that existing oral expanders often have a fixed expansion spacing, making it difficult to achieve precise fit when facing patients with different oral structures, different age groups, and different conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oral expander, including a handle assembly, a limiting component inside the handle assembly, two expander bracket assemblies outside the handle assembly, a spring piece between the two expander bracket assemblies, the handle assembly including a handle, a through groove inside the handle, a limiting groove inside the through groove, the limiting component including a slide plate, a spring telescopic rod on one side of the slide plate, a rack fixedly mounted on the other side of the slide plate, two gears on one side of the rack, the rack meshing with the two gears, the expander bracket assembly including a first rotating shaft, a connecting strip fixedly sleeved on the outside of the first rotating shaft, a second rotating shaft inserted into the other end of the connecting strip, an oral support plate fixedly connected to one end of the second rotating shaft, and a leveling counterweight fixedly connected to the bottom of the other end of the oral support plate.

[0006] Preferably, the sliding plate is disposed inside the through groove and slidably connected to the through groove.

[0007] Preferably, one end of the spring telescopic rod is fixedly connected to one side wall of the slide plate, and the other end of the spring telescopic rod is fixedly connected to one side wall of the through groove.

[0008] Preferably, the rack is disposed inside the limiting groove and is slidably connected to the limiting groove.

[0009] Preferably, the rotating shaft passes through both sides of the handle and is connected to both sides of the handle via bearings.

[0010] Preferably, the rotating shaft passes through the connecting strip and is connected to the connecting strip via a bearing.

[0011] Preferably, the spring is disposed between the two connecting strips and is fixedly connected to the two connecting strips.

[0012] The present invention has the following advantages:

[0013] 1. The limiting component consisting of a sliding plate, spring telescopic rod, rack and pinion can quickly release and lock the limiting state of the expander bracket component. Medical staff only need to move the sliding plate to adjust the distance between the two oral support plates in a flexible manner with the elasticity of the spring. It can accurately adapt to the needs of patients with different oral structures, age groups and conditions, and significantly improve the versatility and practicality of the expander.

[0014] 2. By using a rack and pinion meshing structure to fix the adjusted spacing, when the spring telescopic rod pushes the rack to reset, it can quickly and tightly mesh with the gear to form a stable limiting structure. This effectively prevents the expansion support assembly from shifting due to external forces during oral examinations, treatments, or surgeries, providing a stable operating space for medical staff and ensuring the smooth progress of medical operations. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 A schematic diagram of the overall structure of this utility model;

[0018] Figure 2 A perspective view of the expansion support assembly provided by this utility model;

[0019] Figure 3 Exploded perspective view of the connection relationship at the limiting component provided by this utility model;

[0020] Figure 4A partial sectional perspective view of the limiting component provided by this utility model.

[0021] In the diagram: 10 Grip assembly, 11 Grip, 12 Through groove, 13 Limiting groove, 20 Limiting assembly, 21 Slide plate, 22 Spring telescopic rod, 23 Rack and pinion, 24 Gear, 30 Expanding support assembly, 31 Rotating shaft one, 32 Connecting bar, 33 Rotating shaft two, 34 Oral support plate, 35 Balancing counterweight, 40 Spring plate. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] See attached document Figure 1 - Appendix Figure 4 The present invention provides an oral expander, including a handle assembly 10, a limiting component 20 inside the handle assembly 10, two expander bracket assemblies 30 outside the handle assembly 10, a spring piece 40 between the two expander bracket assemblies 30, a handle 11 inside the handle assembly 10, a through groove 12 inside the through groove 12, a limiting groove 13 inside the through groove 12, a sliding plate 21, a spring telescopic rod 22 on one side of the sliding plate 21, a rack 23 fixedly on the other side of the sliding plate 21, two gears 24 on one side of the rack 23, the rack 23 meshing with the two gears 24, and an expander bracket assembly 30 including a first rotating shaft 31, a connecting strip 32 fixedly sleeved on the outside of the first rotating shaft 31, a second rotating shaft 33 inserted into the other end of the connecting strip 32, an oral support plate 34 fixedly connected to one end of the second rotating shaft 33, and a leveling counterweight 35 fixedly connected to the bottom of the other end of the oral support plate 34.

[0024] In this implementation scheme, in order to achieve the purpose of adjustable and quick fixation of the expansion support spacing, the handle assembly 10, the limiting assembly 20, the expansion support bracket assembly 30 and the spring piece 40 work together to achieve the adjustment and fixation of the expansion support spacing. The through groove 12 and the limiting groove 13 in the handle 11 provide movement space for the limiting assembly. By moving the slide plate 21 to compress the spring telescopic rod 22, the rack 23 is driven to disengage from the gear 24, releasing the limitation on the expansion support bracket assembly 30. At this time, medical staff can adjust the spacing of the oral support plate 34 by pinching the connecting strip 32 and using the elasticity of the spring piece 40. After the adjustment is completed, the slide plate 21 is released, the spring telescopic rod 22 pushes the rack 23 to reset and mesh with the gear 24, quickly fixing the expansion support spacing. The gear and rack structure can prevent displacement during use. At the same time, the rotating shaft 23 cooperates with the oral support plate 34 and the leveling counterweight 35. Through the rotation of the bearing and the action of gravity, it is ensured that the oral support plate 34 extends parallel into the oral cavity, avoiding occlusal injury to the patient and improving the safety of use.

[0025] To achieve rapid adjustment and fixation of the expansion gap, this device employs the following technical solution: A sliding plate 21 is located inside and slidably connected to the through groove 12; one end of a spring telescopic rod 22 is fixedly connected to one side wall of the sliding plate 21, and the other end is fixedly connected to one side wall of the through groove 12; a rack 23 is located inside and slidably connected to the limiting groove 13. When medical personnel need to adjust the expansion gap, they can move the sliding plate 21 with their fingers. Due to the sliding connection between the sliding plate 21 and the through groove 12, the sliding plate 21 can move smoothly within the through groove 12, simultaneously compressing the fixedly connected spring telescopic rod 22 and causing the rack 23 to slide within the limiting groove 13. The compression of the spring telescopic rod 22 generates elastic potential energy. As rack 23 gradually disengages from gear 24, it releases the limiting constraint on the expansion bracket assembly 30, creating conditions for adjusting the spacing. After medical staff adjust the spacing of the oral support plate 34 to the appropriate position by pinching the connecting strip 32 and using the elastic force of the spring 40, they release the slide plate 21. At this time, the spring telescopic rod 22 recovers its deformation by storing elastic potential energy, pushing the slide plate 21 to slide in the opposite direction, thereby driving rack 23 to reset in the limiting groove 13 and re-engage with gear 24. The rack 23 and gear 24 are tightly engaged to form a stable limiting structure, fixing the expansion bracket assembly 30 in the current position, quickly locking the expansion spacing, effectively preventing spacing changes caused by external forces during use, and ensuring the stability and safety of oral medical operations.

[0026] To achieve flexible adjustment of the expansion spacing while maintaining stable support of the oral cavity support plate, this device employs the following technical solution: A rotating shaft 31 penetrates both sides of the handle 11 and is connected to both sides of the handle 11 via bearings; a rotating shaft 33 penetrates the connecting strip 32 and is connected to the connecting strip 32 via bearings; a spring plate 40 is positioned between the two connecting strips 32 and is fixedly connected to them. When the expansion spacing needs adjustment, because the rotating shaft 31 is connected to the handle 11 via bearings, the connecting strip 32 can rotate flexibly around the rotating shaft 31. When medical personnel squeeze the connecting strip 32 and apply external force, the connecting strip 32 rotates around the rotating shaft 31 as a fulcrum, driving the oral cavity support plate 34 to move. During this process, the spring plate 40 plays a crucial role; it is fixed between the two connecting strips 32. When the connecting strips 32 approach each other, the spring plate 40 is subjected to… The compression causes elastic deformation and stores elastic potential energy. When the external force applied to the connecting strip 32 is reduced, the spring 40 releases the elastic potential energy, pushing the two connecting strips 32 to open outward, thereby realizing the dynamic adjustment of the expansion spacing. At the same time, the bearing connection design between the rotating shaft 33 and the connecting strip 32 allows the oral support plate 34 to rotate freely around the rotating shaft 33. With the help of the leveling counterweight 35 at the bottom of the other end of the oral support plate 34, the oral support plate 34 always remains parallel under the action of gravity. Whether in the process of adjusting the spacing or in the process of oral examination or treatment at a fixed spacing, the rotational flexibility of the rotating shaft 33 and the gravity of the leveling counterweight 35 work together to ensure that the oral support plate 34 will not tilt due to the patient's biting or other external forces, providing a stable operating space for medical staff and effectively avoiding accidental compression or damage to the patient's oral tissues.

[0027] The usage process of this utility model is as follows: When using this utility model, the counterweight 35, in conjunction with the rotating shaft 33, ensures that the oral support plate 34 is in a parallel state when inserted into the patient's mouth, preventing the patient from biting the edge of the oral support plate 34 during occlusion, thus avoiding discomfort or injury. When it is necessary to adjust the distance between the two oral support plates 34, hold the handle 11 with one hand and move the slide plate 21 to the right with your fingers. At this time, the spring telescopic rod 22 is compressed and contracted, and the slide plate 21 drives the rack 23 to move to the right, causing the rack 23 to disengage from the two gears 24, thereby releasing the limitation on the expansion bracket assembly 30. Hold the two connecting bars 32 with the other hand and control the distance between the two oral support plates 34 according to actual needs. When an inward pinching force is applied, the two connecting bars 32 overcome the spring... The elastic force of the plates 40 moves closer together, reducing the distance between the two oral support plates 34. When the pinching force is reduced, the contracting elastic plates 40 between the two connecting strips 32 push the two connecting strips 32 outward through elastic force, thereby increasing the distance between the two oral support plates 34. After adjusting to the appropriate expansion distance, the finger that was moving the slide plate 21 is released, the spring telescopic rod 22 returns to its deformation and pushes the slide plate 21 to the left, causing the rack 23 to re-engage with the two gears 24. At this time, the meshing structure of the rack 23 and the gears 24 limits the expansion bracket assembly 30, quickly fixing the distance between the two oral support plates 34, ensuring that the adjustment state of the expander does not change during oral examination, treatment or surgery, and providing a stable operating space for medical staff.

[0028] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. An oral expander comprising a handle assembly (10), characterised in that: The grip assembly (10) has a limiting component (20) inside, and two expansion bracket assemblies (30) are provided on the outside of the grip assembly (10). A spring piece (40) is provided between the two expansion bracket assemblies (30). The grip assembly (10) includes a grip (11). A through groove (12) is provided inside the grip (11). A limiting groove (13) is provided inside the through groove (12). The limiting component (20) includes a sliding plate (21). A spring telescopic rod (22) is provided on one side of the sliding plate (21). 21) A rack (23) is fixedly provided on the other side. Two gears (24) are provided on one side of the rack (23). The rack (23) meshes with the two gears (24). The expansion support assembly (30) includes a first rotating shaft (31). A connecting strip (32) is fixedly sleeved on the outside of the first rotating shaft (31). A second rotating shaft (33) is inserted into the other end of the connecting strip (32). An oral cavity support plate (34) is fixedly connected to one end of the second rotating shaft (33). A leveling counterweight (35) is fixedly connected to the bottom of the other end of the oral cavity support plate (34).

2. An oral expander according to claim 1, wherein: The slide plate (21) is located inside the through groove (12) and is slidably connected to the through groove (12).

3. An oral expander according to claim 1, wherein: One end of the spring telescopic rod (22) is fixedly connected to one side wall of the slide plate (21), and the other end of the spring telescopic rod (22) is fixedly connected to one side wall of the through groove (12).

4. An oral expander according to claim 1, wherein: The rack (23) is located inside the limiting groove (13) and is slidably connected to the limiting groove (13).

5. An oral expander according to claim 1, wherein: The pivot (31) passes through both sides of the handle (11) and is connected to both sides of the handle (11) via bearings.

6. An oral expander according to claim 1, wherein: The second rotating shaft (33) passes through the connecting strip (32) and is connected to the connecting strip (32) via a bearing.

7. An oral expander according to claim 1, wherein: The spring piece (40) is located between the two connecting strips (32) and is fixedly connected to the two connecting strips (32).

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