Multi-directional adjustable maxillary reshaping expander

Abstract

The application provides a multi-direction adjustable maxillary bone shaping and arch expander, and belongs to the technical field of arch expanders. The maxillary bone shaping and arch expander comprises an arch expansion component, a fixing component and the like. The arch expansion component comprises a frame plate, a first driving assembly is installed on the frame plate, a lateral arch expansion plate is installed on the first driving assembly, a second driving assembly is installed on the back of the frame plate, an installation assembly is installed on the second driving assembly, a connecting assembly and a first locking assembly are installed on the installation assembly, and a forward arch expansion plate is installed on the connecting assembly. The fixing component comprises a through hole formed in the installation assembly and a second locking assembly installed on the installation assembly. The application effectively solves the problem of space pose fixation or limited adjustment range of the traditional device, can accurately match the complex anatomical morphology of the front part of the dental arch of different patients by the forward arch expansion plate, ensures the accuracy and adaptability of the direction of the orthopedic force, avoids stress concentration caused by angle inadaptation, and improves the treatment effect and patient comfort from the structure.

Description

Technical Field

[0001] This invention belongs to the field of arch expander technology, specifically relating to a multi-directional adjustable maxillary bone shaping arch expander. Background Technology

[0002] Currently, in the field of orthodontics and maxillofacial surgery, insufficient transverse development of the maxilla is a common clinical problem. Traditional arch expanders mainly rely on single-dimensional transverse expansion, such as increasing the width of the dental arch through spiral expanders or fixed appliances. In recent years, with the advancement of digital diagnostic technology and personalized treatment concepts, higher demands have been placed on the precision, functional versatility, and patient comfort of orthodontic appliances in clinical practice.

[0003] In existing technologies, the adjustability of arch expander components has significant limitations. This is mainly manifested in the fact that their spatial position is usually fixed, or can only achieve coarse adjustments within a very limited range. It is difficult to precisely match and flexibly adjust to the individualized anterior anatomical morphology and dynamic changes of the dental arch during treatment. This deficiency not only makes it impossible to precisely control the direction of orthodontic force application, but may also cause abnormal local stress concentration due to mismatch between the component angle and the dental arch shape, thereby affecting the final arch expander treatment effect and reducing patient comfort. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-directional adjustable maxillary reshaping expander, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A multi-directional adjustable maxillary reshaping expander includes an expander component, comprising a frame plate, a first drive assembly mounted on the frame plate, a lateral expander plate mounted on the first drive assembly, a second drive assembly mounted on the back of the frame plate, an installation assembly mounted on the second drive assembly, a connecting assembly and a first locking assembly mounted on the installation assembly, and a forward expander plate mounted on the connecting assembly. The fixing component includes a through hole formed in the mounting assembly and a second locking component mounted on the mounting assembly.

[0006] In a preferred embodiment of the present invention, the first driving assembly includes a bidirectional lead screw and connecting rods. The bidirectional lead screw is rotatably connected inside the frame plate. Two movable plates are symmetrically threaded onto the outer side of the bidirectional lead screw. Multiple connecting rods are slidably inserted into both ends of the frame plate. Multiple circular grooves are formed in an annular array on the outer side of the bidirectional lead screw.

[0007] In a preferred embodiment of the present invention, multiple sliding holes are provided at both ends of the frame plate, the connecting rod is slidably connected to the inner wall of the sliding hole, one end of the connecting rod is fixedly connected to the lateral expansion plate, and the other end of the connecting plate is fixedly connected to the movable plate.

[0008] In a preferred embodiment of the present invention, the second driving component includes a threaded rod rotatably connected to the back of the frame plate. A movable frame is threadedly sleeved on the outer side of the threaded rod. Limiting rods are fixedly connected to both ends of the movable frame. A sleeve is slidably sleeved on the outer side of the limiting rod. The end of the sleeve away from the movable frame is fixedly connected to the frame plate. A slot is provided on the threaded rod.

[0009] As a preferred embodiment of the present invention, the mounting assembly includes a fixing frame fixedly connected to two sleeves. The surface of the fixing frame is provided with an incomplete annular groove. The inner wall of the incomplete annular groove is symmetrically provided with two limiting grooves. A rotating block is rotatably connected inside the incomplete annular groove, and the upper and lower ends of the rotating block extend into the interior of the two limiting grooves respectively. A ball groove is provided on the rotating block.

[0010] In a preferred embodiment of the present invention, the connecting assembly includes balls that are tactilely connected inside a ball groove, and a fixing rod is fixedly connected to the outside of the balls, the fixing rod being fixedly connected to a forward expanding plate.

[0011] As a preferred embodiment of the present invention, the first locking component includes a movable block fixedly connected to the surface of the rotating block, the movable block having a first threaded hole, and a first fixing bolt being threaded into the inner thread of the first threaded hole.

[0012] As a preferred embodiment of the present invention, two reinforcing rods are symmetrically fixedly connected between the forward expanding plate and the fixing rod, and the two reinforcing rods are located on the left and right sides of the fixing rod.

[0013] As a preferred embodiment of the present invention, the second locking component includes a second threaded hole formed on the rotating block, and a second fixing bolt is inserted into the internal thread of the second threaded hole.

[0014] In a preferred embodiment of the present invention, the second threaded hole is connected to the ball groove, and the second fixing bolt is located inside the through hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By employing a composite adjustment structure comprising an incomplete annular groove, a rotating block, a ball bearing groove, a ball bearing, and a locking assembly, the rotation of the rotating block within the incomplete annular groove enables a wide range of coarse angle adjustments to the anterior arch expander. Simultaneously, the rolling of the ball bearing within the ball bearing groove allows for fine angle adjustments. This achieves the effect of precise, multi-dimensional, and multi-angle spatial orientation adjustments to the anterior arch expander before and during treatment. This design effectively solves the problems of fixed spatial posture or limited adjustment range in traditional devices, allowing the anterior arch expander to accurately match the complex anterior anatomical morphology of different patients' dental arches. This ensures the accuracy and adaptability of the orthodontic force application direction, avoids stress concentration caused by misaligned angles, and structurally improves treatment effectiveness and patient comfort.

[0016] 2. By employing independent first and second drive components to control the lateral and anterior expanders respectively, and utilizing a first locking component to achieve angle locking, the system achieves independent, step-by-step, and precise coordinated control of lateral and sagittal-anterior expanders within the same device. According to the treatment plan, the physician can first drive the bilateral movable plates to move synchronously outwards to complete lateral expander by rotating a bidirectional screw, and then, after precisely adjusting the angle of the anterior expander, drive it forward precisely by rotating a threaded rod to complete sagittal expander. This modular, independently operable design makes it possible to complete complex three-dimensional bone remodeling within a single body, greatly improving the flexibility and controllability of the treatment plan.

[0017] 3. By setting a first locking component between the rotating block and the fixed frame, and a second locking component between the ball bearing and the rotating block, and in conjunction with the precision guidance of the connecting rod in the sliding hole and the sliding limit of the limiting rod in the sleeve, a firm and stable mechanical locking state is achieved after any adjustment step. This multi-locking and precision guiding structure ensures that the expansion components will not unexpectedly shift or loosen during long-term, continuous orthopedic force loading, thereby guaranteeing stable and reliable force transmission during treatment, improving the safety of the entire expansion process and the certainty of the final bone reshaping effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure from another perspective of the present invention; Figure 3This is a schematic diagram of the structure of the first driving component of the present invention; Figure 4 This is a schematic diagram of the structure of the second driving component of the present invention; Figure 5 This is a partial structural schematic diagram of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the structure with a portion removed; Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure of region A in the middle.

[0019] In the diagram: 10. Frame plate; 11. First drive assembly; 111. Two-way lead screw; 112. Circular groove; 113. Movable plate; 114. Connecting rod; 12. Lateral expansion plate; 13. Sliding hole; 14. Forward expansion plate; 15. Mounting assembly; 151. Fixing frame; 152. Incomplete annular groove; 153. Limiting groove; 154. Rotating block; 155. Ball groove; 16. Second drive assembly; 161. Threaded rod; 162. Sleeve; 163. Limiting rod; 164. Movable frame; 165. Slot; 17. Connecting assembly; 171. Ball; 172. Fixing rod; 18. First locking assembly; 181. Movable block; 182. First threaded hole; 183. First fixing bolt; 19. Second locking assembly; 191. Second threaded hole; 192. Second fixing bolt; 20. Reinforcing rod; 21. Through hole. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] Reference Figure 1 , Figure 2 and Figure 5 This is the first embodiment of the present invention. This embodiment provides a multi-directional adjustable maxillary bone shaping expander, including an expander component, including a frame plate 10, a first drive assembly 11 mounted on the frame plate 10, a lateral expander plate 12 mounted on the first drive assembly 11, a second drive assembly 16 mounted on the back of the frame plate 10, an installation assembly 15 mounted on the second drive assembly 16, a connecting assembly 17 and a first locking assembly 18 mounted on the installation assembly 15, and a forward expander plate 14 mounted on the connecting assembly 17.

[0023] Reference Figure 3The first drive assembly 11 includes a bidirectional lead screw 111 and a connecting rod 114. The bidirectional lead screw 111 is rotatably connected inside the frame plate 10. Two movable plates 113 are symmetrically threaded on the outer side of the bidirectional lead screw 111. Multiple connecting rods 114 are slidably inserted into both ends of the frame plate 10. Multiple circular grooves 112 are opened in an annular array on the outer side of the bidirectional lead screw 111. Multiple sliding holes 13 are provided at both ends of the frame plate 10. The connecting rod 114 is slidably connected to the inner wall of the sliding hole 13. One end of the connecting rod 114 is fixedly connected to the lateral expansion plate 12, and the other end of the connecting plate is fixedly connected to the movable plate 113. A rod with a round rod shape structure is inserted into the inside of the round groove 112. By prying, the bidirectional screw 111 is rotated. Since the bidirectional screw 111 adopts a left-hand and right-hand symmetrical thread design, its rotation can drive the two movable plates 113 that are respectively threaded with it to move in opposite directions in a straight line. The movement of the movable plates 113 is precisely guided and limited by the sliding holes 13 opened on the frame plate 10, thereby ensuring the synchronous and stable outward movement of the double-sided support structure. This process drives the lateral expansion plate 12 fixedly connected to the movable plate 113 to expand laterally, completing the basic double-sided synchronous expansion, and also realizing the overall fixation of the device inside the oral cavity.

[0024] Reference Figure 4 The second drive assembly 16 includes a threaded rod 161 rotatably connected to the back of the frame plate 10. A movable frame 164 is threadedly sleeved on the outer side of the threaded rod 161. Limiting rods 163 are fixedly connected to both ends of the movable frame 164. A sleeve 162 is slidably sleeved on the outer side of the limiting rod 163. The end of the sleeve 162 away from the movable frame 164 is fixedly connected to the frame plate 10. A slot 165 is provided on the threaded rod 161. A plug rod is inserted into the slot 165. The slot 165 is hexagonal in shape. The structure is designed so that turning the insertion rod drives the threaded rod 161 to rotate. Since the movable frame 164 is slidably inserted into the two sleeves 162 through two limiting rods 163, a limit is formed on the movable frame 164. Therefore, when the threaded rod 161 rotates, it can drive the movable frame 164 to move. The movement of the movable frame 164 drives the installation component 15, the connecting component 17 and the forward bow expander 14 to move, thereby using the forward bow expander 14 to achieve the effect of bow expansion correction. Then the insertion rod can be pulled out.

[0025] Reference Figure 5 , Figure 6 and Figure 7The mounting assembly 15 includes a fixing frame 151 fixedly connected to two sleeves 162. The surface of the fixing frame 151 is provided with an incomplete annular groove 152. The inner wall of the incomplete annular groove 152 is symmetrically provided with two limiting grooves 153. A rotating block 154 is rotatably connected inside the incomplete annular groove 152. The rotating block 154 can rotate inside the incomplete annular groove 152, and the upper and lower ends of the rotating block 154 extend into the interior of the two limiting grooves 153 respectively. The two limiting grooves 153 play the role of limiting the upper and lower ends of the rotating block 154 when it rotates. A ball groove 155 is provided on the rotating block 154.

[0026] Reference Figure 5 and Figure 7 The connecting assembly 17 includes a ball 171 that is rolled inside the ball groove 155. A fixing rod 172 is fixedly connected to the outside of the ball 171. The fixing rod 172 is fixedly connected to the forward expansion plate 14. The ball 171 is rolled inside the ball groove 155, which increases the adjustment range of the forward expansion plate 14.

[0027] Reference Figure 7 The first locking assembly 18 includes a movable block 181 fixedly connected to the surface of the rotating block 154. The movable block 181 has a first threaded hole 182, and a first fixing bolt 183 is inserted into the internal thread of the first threaded hole 182. Tightening the first fixing bolt 183 prevents it from abutting against the surface of the fixing frame 151, thereby releasing the fixation of the movable block 181 and the rotating block 154. Then, the fixing rod 172 drives the ball 171 and the rotating block 154 to rotate, which facilitates the adjustment of the direction of the forward expansion plate 14. When the rotating block 154 drives the movable block 181 to rotate, the inner surface of the movable block 181 rotates on the outer surface of the fixing frame 151. After the rotation adjustment is completed, the first fixing bolt 183 is tightened to abut against the surface of the fixing frame 151, thereby fixing the rotating block 154.

[0028] Reference Figure 5 and Figure 6 Two reinforcing rods 20 are symmetrically fixedly connected between the forward expanding plate 14 and the fixed rod 172. The two reinforcing rods 20 are located on the left and right sides of the fixed rod 172. The two reinforcing rods 20 are used to fix the forward expanding plate 14 to the end of the fixed rod 172 near the ball 171, thereby improving the stability of the forward expanding plate 14.

[0029] In use, the rod with a round rod shape is inserted into the round groove 112 and gently pried to rotate it. Because the bidirectional lead screw 111 uses a left- and right-handed symmetrical thread design, its rotation drives the two movable plates 113 to move smoothly in opposite directions along the sliding holes 13 on the frame plate 10. The movement of the movable plates 113 directly causes the lateral expander plates 12, which are fixed to them, to expand outward, thereby achieving lateral widening of the maxilla. This process not only completes the basic bony expansion but also, through the expansion of the bilateral expander plates, stably positions the entire device within the patient's oral cavity.

[0030] Next, the angle of the forward expander 14 is pre-adjusted by loosening the first fixing bolt 183, disengaging its front end from the surface of the fixation frame 151, thereby releasing the locking of the movable block 181 and the rotating block 154. At this time, the forward expander 14 can be held by hand or force can be applied through the fixing rod 172 to make the ball bearing 171 roll in the ball bearing groove 155, driving the rotating block 154 to rotate in the incomplete annular groove 152. The upper and lower ends of the rotating block 154 are constrained by the limiting groove 153 to ensure its rotation trajectory is stable. This step allows the dentist to flexibly adjust the spatial orientation of the forward expander 14 according to the physiological curvature of the patient's anterior dental arch and treatment needs. After adjusting to the target angle, the first fixing bolt 183 is retightened so that its end firmly abuts against the surface of the fixation frame 151, thus securely locking the rotating block 154 and the entire forward expander assembly at the current angle.

[0031] Finally, the forward expansion force is applied by rotating the threaded rod 161 using the insert inserted into the slot 165. Since the movable frame 164 is restricted to linear movement only through the sliding engagement of the limiting rods 163 on both sides with the sleeve 162, the rotation of the threaded rod 161 is converted into precise displacement of the movable frame 164 along the axial direction of the sleeve 162. The movable frame 164 drives the mounting assembly 15, the connecting assembly 17, and the pre-adjusted forward expansion plate 14 to move forward or backward together, thereby applying a continuous and controllable orthodontic force to the anterior dental arch, achieving shaping and expansion of the anterior maxilla. After treatment, the insert can be removed.

[0032] Example 2

[0033] Reference Figure 6 and Figure 7 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a fixing component, including a through hole 21 formed on the mounting component 15 and a second locking component 19 mounted on the mounting component 15.

[0034] Reference Figure 7The second locking component 19 includes a second threaded hole 191 formed on the rotating block 154, and a second fixing bolt 192 is threaded into the inside of the second threaded hole 191. The second threaded hole 191 is connected to the ball groove 155. The second fixing bolt 192 is located inside the through hole 21. Tightening the second fixing bolt 192 releases the fixing of the ball 171, and then drives the fixing rod 172 to make the ball 171 roll inside the ball groove 155, thereby further realizing the adjustment of the forward expansion plate 14. After the adjustment is completed, the second fixing bolt 192 is tightened again to abut against the surface of the ball 171, thereby fixing the adjusted ball 171. When the rotating block 154 rotates, the rotating block 154 drives the second fixing bolt 192 to rotate inside the through hole 21.

[0035] In use, after completing the coarse angle adjustment (via rotating block 154), if more fine adjustments (such as small pitch or yaw) are needed to the anterior expander plate 14, the second locking assembly 19 can be used. Loosen the second fixing bolt 192 to release its clamping fixation on the ball bearing 171. At this time, the freedom of movement of the ball bearing 171 within the ball bearing groove 155 is released. The physician can slightly adjust the fixing rod 172 to make the ball bearing 171 roll within the groove, thereby causing small-range, multi-angle positional changes in the anterior expander plate 14. This design greatly enhances the adaptability of the instrument to the complex maxillofacial anatomy of different patients. After fine adjustment, tighten the second fixing bolt 192 so that its end firmly abuts against the surface of the ball bearing 171, locking the ball bearing 171 and its connected anterior expander plate 14 in the final desired three-dimensional spatial position. During the coarse adjustment of the rotating block 154, the second fixing bolt 192 will move within the through hole 21 without affecting the coarse adjustment process.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multi-directional adjustable maxillary bone reshaping expander, characterized in that: include, The bow expander component includes a frame plate (10), on which a first drive assembly (11) is mounted, on which a lateral bow expander plate (12) is mounted, on which a second drive assembly (16) is mounted on the back of the frame plate (10), on which a mounting assembly (15) is mounted, on which a connecting assembly (17) and a first locking assembly (18) are mounted, and on which a forward bow expander plate (14) is mounted; The fixing components include a through hole (21) formed on the mounting assembly (15) and a second locking component (19) mounted on the mounting assembly (15).

2. The multi-directional adjustable maxillary reshaping expander according to claim 1, characterized in that: The first drive assembly (11) includes a bidirectional lead screw (111) and a connecting rod (114). The bidirectional lead screw (111) is rotatably connected inside the frame plate (10). Two movable plates (113) are symmetrically threaded on the outer side of the bidirectional lead screw (111). Multiple connecting rods (114) are slidably inserted at both ends of the frame plate (10). Multiple circular grooves (112) are opened in an annular array on the outer side of the bidirectional lead screw (111).

3. The multi-directional adjustable maxillary reshaping expander according to claim 2, characterized in that: Multiple sliding holes (13) are provided at both ends of the frame plate (10). The connecting rod (114) is slidably connected to the inner wall of the sliding hole (13). One end of the connecting rod (114) is fixedly connected to the lateral expansion plate (12), and the other end of the connecting plate is fixedly connected to the movable plate (113).

4. The multi-directional adjustable maxillary reshaping expander according to claim 3, characterized in that: The second drive assembly (16) includes a threaded rod (161) rotatably connected to the back of the frame plate (10). A movable frame (164) is threadedly sleeved on the outer side of the threaded rod (161). Limiting rods (163) are fixedly connected to both ends of the movable frame (164). A sleeve (162) is slidably sleeved on the outer side of the limiting rod (163). The end of the sleeve (162) away from the movable frame (164) is fixedly connected to the frame plate (10). A slot (165) is provided on the threaded rod (161).

5. The multi-directional adjustable maxillary reshaping expander according to claim 4, characterized in that: The mounting assembly (15) includes a fixing bracket (151) fixedly connected to two sleeves (162). The surface of the fixing bracket (151) is provided with an incomplete annular groove (152). The inner wall of the incomplete annular groove (152) is symmetrically provided with two limiting grooves (153). A rotating block (154) is rotatably connected inside the incomplete annular groove (152), and the upper and lower ends of the rotating block (154) extend into the interior of the two limiting grooves (153). A ball groove (155) is provided on the rotating block (154).

6. The multi-directional adjustable maxillary reshaping expander according to claim 1, characterized in that: The connecting assembly (17) includes a ball (171) that is rolled inside the ball groove (155), and a fixing rod (172) is fixedly connected to the outside of the ball (171), and the fixing rod (172) is fixedly connected to the forward expansion plate (14).

7. The multi-directional adjustable maxillary reshaping expander according to claim 1, characterized in that: The first locking component (18) includes a movable block (181) fixedly connected to the surface of the rotating block (154). The movable block (181) has a first threaded hole (182), and a first fixing bolt (183) is inserted into the internal thread of the first threaded hole (182).

8. The multi-directional adjustable maxillary reshaping expander according to claim 7, characterized in that: Two reinforcing rods (20) are symmetrically fixedly connected between the forward expanding plate (14) and the fixing rod (172), and the two reinforcing rods (20) are located on the left and right sides of the fixing rod (172).

9. The multi-directional adjustable maxillary reshaping expander according to claim 1, characterized in that: The second locking component (19) includes a second threaded hole (191) opened on the rotating block (154), and a second fixing bolt (192) is inserted into the internal thread of the second threaded hole (191).

10. The multi-directional adjustable maxillary reshaping expander according to claim 9, characterized in that: The second threaded hole (191) is connected to the ball groove (155), and the second fixing bolt (192) is located inside the through hole (21).

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