Mouth gag for orthodontics

Abstract

The invention belongs to the technical field of medical auxiliary instruments, and discloses an orthodontic mouth gag which comprises an adjusting assembly, a clamping assembly and a pair of distraction assemblies, the adjusting assembly comprises a base, the base is connected with a main shaft and a connecting cylinder, the main shaft is connected with an adjusting knob and a pair of linkage sliding blocks, and the connecting cylinder is connected with an outer cylinder; the distraction assembly comprises a base plate, the base plate is connected with an adjusting seat, the adjusting seat is connected with a supporting denture and a locking bolt, and the supporting denture is provided with a groove; the clamping assembly comprises an air bag, an inflation assembly, a linkage piece and an eccentric cam, the inflation assembly comprises an inflation cylinder and an air inlet assembly, and the inflation cylinder communicates with the air bag through an air guide pipe. The distraction distance of the pair of distraction assemblies is adjusted through the adjusting assembly so as to adapt to different oral cavity sizes, the supporting denture positions of the distraction assemblies can be adjusted, different supporting positions can be adjusted, teeth at the distraction positions are clamped and fixed through the clamping assembly, and accidental sliding / slipping of the distraction assemblies is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of medical auxiliary instruments, in particular to an orthodontic mouth opener. Background Art

[0002] In the field of oral medicine, an opener (also known as a mouth opener) is an important auxiliary device that assists doctors in orthodontic treatment, oral examinations and oral surgery.

[0003] Most existing mouth openers are of a single size or fixed structure, relying on material elasticity or rigid tension to maintain the open state. However, the oral anatomical structures of children, adolescents and adults are significantly different (such as dental arch width and degree of jaw development). Single-sized or fixed-structure mouth openers lack an adjustable mechanism and are difficult to accurately adapt to the oral size of patients of different body types. This not only reduces patient comfort, but may also cause fatigue of the temporomandibular joint or mucosal damage. For example, children have a small oral space, and using a single-sized or fixed-structure mouth opener may cause soft tissue compression due to over-opening; and during orthodontic treatment for adults, a fixed mouth opener may not be able to stably maintain the degree of opening due to insufficient tension.

[0004] In addition, most existing mouth openers are fixed to the dentition by friction or a simple snap-on structure. During orthodontic treatment, patients may have some unconscious oral muscle movements, and the moist environment in the mouth, unconscious swallowing or tongue movement of the patient may easily cause the device to shift. For example, the sliding of the mouth opener may squeeze the lip and cheek mucosa, causing iatrogenic damage; if it falls off to the pharynx, it may even cause the risk of suffocation. Summary of the invention

[0005] The present invention is intended to provide an orthodontic mouth opener, which uses an adjustment component to adjust the opening distance of a pair of opening components to adapt to different oral sizes, the support tray position of the opening component is adjustable to achieve adjustment of different support positions, and the clamping component clamps and fixes the teeth in the opening position to prevent the opening component from accidentally sliding / slipping off. The problem in the background technology is solved.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An orthodontic mouth opener comprises an adjustment component, a clamping component and a pair of coordinated expansion components, wherein the adjustment component is used to adjust the relative distance between the pair of expansion components, the pair of expansion components are used for expanding and / or supporting the mouth, and the clamping component is used for clamping and fixing the expansion components to the teeth;

[0008] The adjustment assembly includes a base, the base is rotatably connected to a main shaft, the main shaft is fixedly connected to an adjustment knob arranged on the outside of the base, the main shaft is connected to a pair of linkage sliders through threads with opposite rotation directions, the pair of linkage sliders are slidably connected to the base, and the pair of linkage sliders move linearly toward each other along the axial direction of the main shaft by rotating the adjustment knob;

[0009] A pair of the spreading components are respectively connected to a pair of the linkage sliders, and the spreading components include a base plate, the base plate is connected to the linkage slider, the base plate is adjustably connected to a supporting dental tray, and the supporting dental tray is provided with a groove for placing teeth;

[0010] The clamping assembly includes an airbag, an eccentric cam and an inflation assembly, the airbag is connected to the inner wall of the groove of the supporting tray, the eccentric cam is fixedly connected to the main shaft, and the inflation assembly includes an inflation cylinder and an air intake assembly that are arranged in a matching manner, the driving end of the air intake assembly is in sliding contact with the annular end face of the eccentric cam, and the air outlet end of the inflation cylinder is connected to the airbag through an air guide tube; the main shaft rotates periodically, and the air intake assembly reciprocates along the axial direction of the inflation cylinder to inflate the airbag.

[0011] Furthermore, the base plate is connected to the linkage slider via a guide member, the base is provided with a first through slot, and the guide member is slidably disposed through the first through slot.

[0012] Furthermore, the base plate is slidably connected to an adjustment seat, and the supporting bracket is fixedly connected to the outer side wall of the adjustment seat; the base plate is provided with an adjustment groove, and a locking bolt is passed through the adjustment groove. The locking bolt is threadedly connected to the adjustment seat for relative locking and / or relative sliding of the adjustment seat and the base plate.

[0013] Furthermore, the base plate and the supporting dental tray are both arc-shaped, and the pair of base plates and the pair of supporting dental trays of a pair of the spreading components are both arranged in a "mouth" shape.

[0014] Furthermore, the adjustment groove is also arc-shaped, and the centers of the adjustment groove, the base plate and the arc supporting the dental tray are concentric.

[0015] Furthermore, opposite sides of a pair of the supporting trays are connected to irradiation lamps, the irradiation lamps are LED lamps with built-in batteries, and the irradiation lamps are built into the side walls of the supporting trays.

[0016] Furthermore, the driving end of the air intake assembly is connected to the eccentric cam via a linkage member, the base is provided with a second through slot, and the linkage member is slidably disposed in the second through slot.

[0017] Furthermore, an annular groove is formed on the annular end surface of the eccentric cam, and the linkage member is connected with an arc-shaped slider, which is slidably arranged on the inner side of the annular groove.

[0018] Furthermore, the base is fixedly connected to a connecting cylinder, the inflation assembly is arranged on the inner side of the connecting cylinder, the inflation cylinder body is fixedly connected to the connecting cylinder, the linkage is slidably connected to the connecting cylinder, and the outer side of the connecting cylinder is connected to an outer cylinder via threads.

[0019] Furthermore, the airbag is provided with an air nozzle, and one end of the air guide tube away from the inflation cylinder is detachably connected to the air nozzle, and the air guide tube is also connected to a control valve for controlling its connection state.

[0020] The advantages and beneficial effects of the technical solution are:

[0021] 1. The present invention provides an orthodontic mouth opener, which uses an adjustment component to adjust the opening distance of a pair of opening components to adapt to different oral sizes. The support tooth tray position of the opening component is adjustable to achieve adjustment of different support positions. The clamping component clamps and fixes the teeth at the opening position to prevent the opening component from accidentally sliding / slipping off. Among them, the base of the adjustment component is rotatably connected to the main shaft, and the main shaft is fixedly connected to the adjustment knob. The main shaft is connected to a pair of linkage sliders that are slidably connected to the base through threads with opposite rotation directions. When the adjustment knob is turned, the pair of linkage sliders move linearly toward each other along the axial direction of the main shaft under the driving action of the threads and the restriction of the base. The pair of opening components are respectively connected to the pair of linkage sliders, that is, by turning the adjustment knob, the relative distance of the pair of opening components can be adjusted. The adjustment is convenient and quick, and the threads have self-locking ability. After adjusting to the specified position, the relative position of the pair of opening components is stable to ensure the opening and / or support effect of the mouth. The base plate of the opening component is connected to the support tooth tray, and the support tooth tray is provided with a groove for placing the teeth. When opening and / or supporting, the teeth are placed in the groove of the supporting tray, so that the contact effect between the supporting tray and the teeth in the supporting position is good, thereby ensuring the opening and / or supporting effect of the opening component on the mouth; the air bag of the clamping component is arranged on the inner wall of the groove of the supporting tray, the eccentric cam is fixedly connected to the main shaft, and the air inlet component of the inflation component abuts against the annular end face of the eccentric cam, the air bag is connected with the air outlet end of the inflation component, and when the adjusting knob is turned to adjust the relative distance between a pair of expansion components, the eccentric cam rotates accordingly under the action of the main shaft, and the eccentric cam rotates to periodically press the inflation component to inflate the air bag. After the air bag is inflated, it expands, so that the width of the groove where the supporting tray for placing the teeth becomes narrower, thereby achieving clamping and fixation of the teeth in the supporting position.

[0022] 2. The present invention provides an orthodontic opener, which utilizes a guide member to connect a base plate and a linkage slider, so that the movement states of the three are consistent, and a first through groove is provided on the base, and the guide member slides through the through groove. Under the action of the first groove, the guide member guides and limits the movement of the linkage slider and the base plate, so that the process of adjusting a pair of opening components is smooth; an adjustment seat is used to connect the supporting tooth tray and the base plate, so as to adjust the relative position of the supporting tooth tray, thereby realizing the adjustment of the supporting position, an adjustment groove is provided on the base plate, and a locking bolt threadedly connected to the adjustment seat is passed through the adjustment groove, and the adjustment bolt can be used for relative locking and / or relative sliding of the adjustment seat (supporting tooth tray) and the base plate, and can also limit and guide the adjustment process of the adjustment seat (supporting tooth tray) relative to the base plate, so as to ensure the stability and functionality of the adjustment process, and can effectively improve the accuracy of the adjustment position.

[0023] 3. The present invention provides an orthodontic opener, in which the base plate, supporting tooth tray and adjustment groove are all set to be arc-shaped, and a pair of base plates and a pair of supporting tooth trays are in the shape of a Chinese character "口", which is ergonomic in structure. The centers of the arcs of the adjustment groove, the base plate and the supporting tooth tray are concentric. No matter how they are adjusted, the supporting tooth tray always adapts to the human mouth, so that the supporting tooth tray has a good contact effect and a large contact area with the teeth in the supporting position at any position, which can effectively improve the comfort when opening the mouth and / or supporting the mouth; an irradiation lamp is arranged on the side wall of the supporting tooth tray. With the help of the light of the irradiation lamp, medical staff can observe the patient's oral cavity and perform orthodontic operations conveniently. The irradiation lamp is an LED lamp with a built-in battery, and the overall structure is simple and the function is reliable.

[0024] 4. An oral orthodontic mouth opener provided by the present invention uses a linkage to connect the driving end of the air intake assembly and an eccentric cam. An annular groove is formed on the annular end face of the cam, and the linkage is connected to an arc-shaped slider that slides inside the annular groove. The cooperation between the annular groove and the arc-shaped slider ensures a reliable connection between the linkage and the eccentric cam. A second through groove is formed on the base, and the linkage slides through the second through groove. The second through groove guides and limits the movement of the linkage, making the process of inflating the airbag by the rotation of the eccentric cam along with the main shaft uniform and stable. A connecting cylinder is fixedly connected to the base, and the inflation assembly is arranged inside the connecting cylinder. The outer cylinder is sleeved outside the connecting cylinder through threads. The outer cylinder shields and protects the inflation assembly, making the outer tube of the entire mouth opener neat and concise, and also facilitating the installation, debugging, and correction of the inflation assembly to ensure its functionality. The outer cylinder can also be used as the holding handle of the entire mouth opener. When a doctor performs an operation of opening and / or spreading the patient's mouth, one hand can hold the outer cylinder and the other hand can rotate the adjustment knob, which is simple and easy to learn, improving the operation convenience of the mouth opener. A gas nozzle is provided on the airbag, and a control valve is connected to the air guide tube to facilitate the control of the inflation state of the airbag (whether to inflate it to expand for clamping and fixing the teeth in position, controlling the amount of inflation to adapt to the clamping force, etc.) to meet different clinical needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic structural diagram of the airbag of an oral orthodontic mouth opener of the present invention in a fully inflated state;

[0026] Figure 2 FIG. is the front view of an oral orthodontic mouth opener of the present invention;

[0027] Figure 3 is Figure 2 the sectional view taken along A - A in;

[0028] Figure 4 FIG. is the side view of an oral orthodontic mouth opener of the present invention;

[0029] Figure 5 is Figure 4 the sectional view taken along B - B in;

[0030] Figure 6 FIG. is a schematic structural diagram of the airbag of an oral orthodontic mouth opener of the present invention in a non-inflated state.

[0031] The names of the corresponding reference numerals in the drawings are:

[0032] Base 1, substrate 2, guide 3, main shaft 4, linkage slider 5, adjustment knob 6, first through groove 7, adjustment groove 8, adjustment seat 9, locking bolt 10, support dental bracket 11, airbag 12, eccentric cam 13, annular groove 14, connecting cylinder 15, inflation cylinder body 16, intake assembly 17, linkage member 18, air duct 19, control valve 20, air nozzle 21, outer cylinder 22, second through groove 23, irradiation lamp 24. Detailed implementation mode

[0033] The present invention will be further described in detail below in conjunction with the drawings and the implementation mode:

[0034] As Figures 1 to 6 shown, an oral orthodontic opener includes an adjustment assembly, a clamping assembly, and a pair of cooperating expansion assemblies. The adjustment assembly is used to adjust the relative distance between the pair of expansion assemblies. The pair of expansion assemblies are used for the expansion and / or support of the oral cavity. The clamping assembly is used for clamping and fixing the expansion assemblies to the teeth;

[0035] The adjustment assembly includes a base 1. The opposite sides of the base 1 are respectively provided with a first through groove 7 and a second through groove 23. The inner side of the base 1 is rotatably connected with a main shaft 4. The main shaft 4 is fixedly connected with an adjustment knob 6 arranged outside the base 1. The main shaft 4 is connected with a pair of linkage sliders 5 through threads with opposite helix directions. The pair of linkage sliders 5 are slidably connected with the base 1. By rotating the adjustment knob 6, the pair of linkage sliders 5 move linearly towards each other along the axial direction of the main shaft 4;

[0036] A pair of expansion assemblies are respectively connected with the pair of linkage sliders 5. The expansion assembly includes a substrate 2. The substrate 2 is connected with the linkage slider 5 through a guide 3. The guide 3 slidably penetrates through the first through groove 7. The substrate 2 is slidably connected with an adjustment seat 9. The outer side wall of the adjustment seat 9 is fixedly connected with a support dental bracket 11. The substrate 2 is provided with an adjustment groove 8. The adjustment groove 8 penetrates through a locking bolt 10. The locking bolt 10 is threadedly connected with the adjustment seat 9 for relative locking and / or relative sliding between the adjustment seat 9 and the substrate 2. The support dental bracket 11 is provided with a groove for placing teeth. One side of the pair of support dental brackets 11 facing each other is connected with an irradiation lamp 24; In this embodiment, the substrate 2, the support dental bracket 11, and the adjustment groove 8 are all arc-shaped, and the pair of substrates 2 and the pair of support dental brackets 11 of the pair of expansion assemblies are all arranged in a "mouth" shape. The arc centers of the adjustment groove 8, the substrate 2, and the support dental bracket 11 are concentric. The irradiation lamp 24 is an LED lamp with a built-in battery, and the irradiation lamp 24 is built into the side wall of the support dental bracket 11;

[0037] The clamping assembly includes an airbag 12, an inflation assembly, and a pair of eccentric cams 13. The airbags 12 are arranged in pairs, and the paired airbags 12 are symmetrically connected to the opposite inner sidewalls of the groove of the support denture 11. A pair of eccentric cams 13 are fixedly connected to the middle of the main shaft 4. External threads with opposite helix directions are provided at both ends of the main shaft 4. A pair of linkage sliders 5 are respectively arranged on the upper and lower sides of the pair of eccentric cams 13. The inflation assembly includes a cooperatively arranged inflation cylinder body 16 and an air intake assembly 17. The driving end of the air intake assembly 17 is connected to the eccentric cam 13 through a linkage member 18. The linkage member 18 slidably passes through the second through groove 23. An annular groove 14 is provided on the annular end face of the eccentric cam 13. The linkage member 18 is connected with an arc-shaped slider, and the arc-shaped slider is slidably arranged inside the annular groove 14. The base 1 is fixedly connected with a connecting cylinder 15, and the inflation assembly is arranged inside the connecting cylinder 15. The inflation cylinder body 16 is fixedly connected with the connecting cylinder 15. The linkage member 18 is slidably connected with the connecting cylinder 15. An outer cylinder 22 is threadedly connected to the outside of the connecting cylinder 15. The air outlet end of the inflation cylinder body 16 is communicated with the airbag 12 through an air guide pipe 19. The airbag 12 is provided with a nozzle 21, and the end of the air guide pipe 19 away from the inflation cylinder body 16 is detachably connected to the nozzle 21. The air guide pipe 19 is also connected with a control valve 20 for controlling its communication state. The main shaft 4 rotates periodically, and the air intake assembly 17 reciprocates along the axial direction of the inflation cylinder body 16 for inflating the airbag 12.

[0038] The specific implementation process is as follows:

[0039] When using this mouth opener, first use a pair of support dentures 11 to support the upper and lower teeth of the patient's oral cavity (the teeth are placed in the groove of the support denture 11). Slide the adjustment seat 9 along the adjustment groove 8 of the base plate 2 according to the actual clinical needs to adjust the support position of the support denture 11. After the adjustment is completed, use the locking bolt 10 to lock the adjustment seat 9 to the base plate 2 so that the support position of the support denture 11 is fixed, and connect the free end of the air guide pipe 19 to the nozzle 21 of the airbag 12 according to the actual needs, and turn on the irradiation lamp 24 according to the actual needs; then the doctor holds the outer cylinder 22 with one hand and turns the adjustment knob 6 with the other hand to move the pair of support dentures 11 away from each other, gradually opening the patient's oral cavity. And during this process, control the communication state of the air guide pipe 19 through the control valve 20 to adjust the inflation state of the airbag 12 (adjust the tightening clamping force on the teeth at the support position) until the patient's oral cavity is fully opened and / or supported.

[0040] Among them, the adjustment component is used to adjust the opening distance of a pair of opening components to adapt to different oral sizes, the position of the support tray 11 of the opening component is adjustable to achieve adjustment of different support positions, and the clamping component clamps and fixes the teeth at the opening position to prevent the opening component from accidentally sliding / slipping. By turning the adjustment knob 6, a pair of opening components move linearly in opposite directions to adjust the opening distance, and the adjustment is convenient and quick; when the mouth is opened and / or supported, the teeth are placed in the groove of the support tray 11, so that the contact effect between the support tray 11 and the teeth at the supporting position is good, ensuring the opening and / or supporting effect of the opening component on the mouth; when the adjustment knob 6 is turned to adjust the relative distance of the pair of opening components, the airbag 12 is inflated and expanded, so that the width of the groove where the support tray 11 is placed for the teeth becomes narrower, and the teeth at the supporting position are clamped and fixed.

[0041] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. An oral orthodontic mouth opener, characterized in that, It includes an adjustment component, a clamping component and a pair of cooperating expansion components. The adjustment component is used to adjust the relative distance between the pair of expansion components. The pair of expansion components are used for the expansion and / or support of the oral cavity. The clamping component is used for clamping and fixing the expansion components to the teeth; The adjustment component includes a base. A main shaft is rotatably connected to the base. The main shaft is fixedly connected with an adjustment knob arranged outside the base. The main shaft is connected with a pair of linkage sliders through threads with opposite helix directions. The pair of linkage sliders are slidably connected to the base. By rotating the adjustment knob, the pair of linkage sliders move linearly towards each other along the axial direction of the main shaft; The pair of expansion components are respectively connected to the pair of linkage sliders. The expansion component includes a substrate. The substrate is connected to the linkage slider. The substrate is adjustably connected with a support dental tray. The support dental tray is provided with a groove for placing teeth; The clamping component includes an airbag, an eccentric cam and an inflation component. The airbag is connected to the inner side wall of the groove of the support dental tray. The eccentric cam is fixedly connected to the main shaft. The inflation component includes a cooperating inflation cylinder body and an air intake component. The driving end of the air intake component is slidably abutted against the annular end face of the eccentric cam. The air outlet end of the inflation cylinder body is communicated with the airbag through a conduit; When the main shaft rotates periodically, the air intake component reciprocates along the axial direction of the inflation cylinder body for inflating the airbag.

2. The oral orthodontic mouth opener according to claim 1, wherein The substrate is connected to the linkage slider through a guide member. The base is provided with a first through groove. The guide member slidably penetrates through the first through groove.

3. The mouth opener for orthodontics according to claim 2, wherein, An adjustment seat is slidably connected to the substrate. The support dental tray is fixedly connected to the outer side wall of the adjustment seat; The substrate is provided with an adjustment groove. A locking bolt penetrates through the adjustment groove. The locking bolt is threadedly connected with the adjustment seat for relative locking and / or relative sliding between the adjustment seat and the substrate.

4. The oral orthodontic mouth opener according to claim 3, characterized in that, Both the substrate and the support dental tray are arc-shaped, and the pair of substrates and the pair of support dental trays of the pair of expansion components are arranged in a "mouth" shape.

5. An oral orthodontic mouth opener according to claim 4, characterized in that, The adjustment groove is also arc-shaped, and the arc centers of the adjustment groove, the substrate and the support dental tray are concentric.

6. The mouth opener for orthodontics according to claim 5, wherein, Irradiation lamps are connected to the opposite sides of the pair of support dental trays. The irradiation lamps are LED lamps with built-in batteries, and the irradiation lamps are built into the side walls of the support dental trays.

7. The mouth opener for orthodontics according to claim 1, characterized in that, The driving end of the air intake component is connected to the eccentric cam through a linkage member. The base is provided with a second through groove. The linkage member slidably penetrates through the second through groove.

8. An oral orthodontic mouth opener according to claim 7, characterized in that, An annular groove is formed on the annular end face of the eccentric cam. The linkage member is connected with an arc-shaped slider. The arc-shaped slider is slidably arranged inside the annular groove.

9. The mouth opener for orthodontics according to claim 8, characterized in that, The base is fixedly connected with a connecting cylinder. The inflation component is arranged inside the connecting cylinder. The inflation cylinder body is fixedly connected with the connecting cylinder. The linkage member is slidably connected with the connecting cylinder. The outer side of the connecting cylinder is threadedly connected with an outer cylinder.

10. The mouth opener for orthodontics according to claim 9, characterized in that, The airbag is provided with an air nozzle. The end of the conduit far from the inflation cylinder body is detachably connected to the air nozzle. The conduit is also connected with a control valve for controlling its communication state.

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