An occlusion-driven orthodontic force conversion and molar anchorage enhancement device

Abstract

The application discloses a kind of occlusion drive type orthodontic force conversion and molar anchorage enhancement device, it is related to oral orthodontic medical instrument field.The device includes support matrix, force input piece, force conversion mechanism and elastic reset piece;Slidably be equipped with inner layer sliding piece in the outer sleeve of support matrix, the lower end of inner layer sliding piece is stress frame, upper end is transmission column, transmission column is equipped with oblique lever inside, stress frame inner wall is equipped with with the matching inclined surface of the inclined surface of oblique lever two ends cooperation;Transmission column top end is slidably connected with the first force arm of force conversion mechanism by sliding connection block, first force arm and second force arm are coaxially connected at fulcrum, and second force arm is connected orthodontic force component;When occlusion, force input piece promotes stress frame to go up, drives oblique lever transverse displacement by inclined surface cooperation, drives transmission column reverse motion, first force arm swings and drives second force arm synchronous swing, converts vertical occlusal force into horizontal traction, while vertical pressure directly enhances molar anchorage.

Description

Technical Field

[0001] This invention relates to the field of orthodontic medical devices, specifically an occlusal driven orthodontic force conversion and molar anchorage enhancement device. Background Technology

[0002] In orthodontic treatment, distal movement of the anterior teeth (such as for correcting malocclusions like crowding and bimaxillary protrusion) is a common treatment requirement. During orthodontic treatment, any force applied to a tooth to move it will simultaneously generate a force of the same magnitude but opposite direction. The structure that supports this reaction force is called "anchorage." Molars, as the most commonly used anchorage teeth in orthodontic treatment, are prone to mesial movement when subjected to orthodontic reaction forces, directly affecting the anterior tooth retraction effect and even leading to treatment failure. Therefore, the stability of molar anchorage is one of the key factors determining the success or failure of orthodontic treatment.

[0003] Currently, the main clinical techniques for enhancing molar anchorage and achieving distal anterior tooth movement include the following categories:

[0004] Firstly, extraoral anchorage devices, such as head caps or chin supports. Patients need to wear them for extended periods each day, leading to poor compliance, and long-term wear can easily cause facial muscle fatigue and temporomandibular joint discomfort.

[0005] Secondly, implant anchorage involves surgically inserting miniature implants into the jawbone as the absolute anchorage source. While this method offers good anchorage, it is an invasive procedure with risks such as infection, implant loosening, and bone resorption. Furthermore, the treatment is expensive, limiting patient acceptance.

[0006] Thirdly, there are elastic traction devices, such as rubber bands and elastic chains. Patients need to change them themselves every day, and the traction force can decrease by about 30% within 24 hours, making the force value unstable; moreover, the application of traction force depends entirely on the patient's active operation, resulting in poor compliance.

[0007] Fourth, intraoral passive anchorage enhancement devices, such as transpalatal bars and Nance arches. Although these devices can enhance molar anchorage to some extent, they are all passive anchorage devices and cannot actively participate in the generation of anterior tooth traction forces, so the anchorage enhancement effect is limited.

[0008] In existing technologies, anchorage enhancement methods and traction application are often independent and unrelated. The anchorage device only passively resists the reaction force, while the generation of traction force depends on the patient's active cooperation or an external power source. There is a lack of synergy between the two, making it difficult to form a mechanical synergy. Summary of the Invention

[0009] The purpose of this invention is to provide an occlusal driven orthodontic force conversion and molar anchorage enhancement device to address the shortcomings mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: an occlusal driven orthodontic force conversion and molar anchorage enhancement device, comprising:

[0011] A support base for fixing to the first dentition region in the patient's oral cavity, the support base having a first component and a second component that can move relative to each other along a first direction;

[0012] A force input device is used to fix the second dentition region in the patient's oral cavity opposite to the first dentition. The force input device applies a driving force along the first direction to the first component of the support base during biting motion.

[0013] A force conversion mechanism is connected between the second component of the support base and the orthodontic force application component. The force conversion mechanism converts the movement of the second component along the first direction into an output force along the second direction, which is at an angle to the first direction.

[0014] An elastic reset member is connected between the first component and the second component of the support base, and is used to drive the first component and the second component to reset relative to each other when the driving force is removed;

[0015] The driving force of the force input component on the first component simultaneously constitutes a reinforcing force on the teeth fixed by the support matrix.

[0016] Preferably, the support substrate comprises:

[0017] Fixing base one, used to fix to the outer surface of the teeth in the first dentition area;

[0018] The outer sleeve is a tubular structure and is fixedly connected to the fixed base.

[0019] An inner sliding member is slidably sleeved inside the outer sleeve, and the inner sliding member can reciprocate along the axial direction of the outer sleeve;

[0020] The end of the inner sliding member closer to the force input member constitutes the first component, and the end of the inner sliding member farther from the force input member constitutes the second component.

[0021] The inner sliding member slides relative to the outer sleeve along the first direction under the action of the driving force;

[0022] The force input component is fixed to the outer surface of the teeth in the second dentition region by a fixing seat two, and is positioned opposite to and in contact with the first component during biting motion.

[0023] Preferably, the inner sliding element includes:

[0024] A force-bearing frame is disposed at the end of the inner sliding member near the force input member, constituting the first component. The force-bearing frame is a frame structure with a hollow inner cavity, which is closed on the side facing the force input member to form a bottom surface and open on the side facing the force conversion mechanism to form an opening. The outer wall of the force-bearing frame is slidably engaged with the inner wall of the outer sleeve.

[0025] A transmission column is disposed at the end of the inner sliding member away from the force input member, constituting the second component. One end of the transmission column extends into the hollow inner cavity from the opening of the force-receiving frame and is slidably connected to the force-receiving frame. The top end of the transmission column passes through the top end of the outer sleeve and extends out of it.

[0026] An oblique lever is inserted laterally inside the transmission column;

[0027] The elastic reset member is disposed in the hollow inner cavity. One end of the elastic reset member is connected to the end of the transmission column that extends into the hollow inner cavity, and the other end of the elastic reset member is connected to the bottom surface of the force-bearing frame.

[0028] The inclined lever converts the motion of the force-bearing frame along the first direction into the motion of the transmission column along the opposite direction to the first direction.

[0029] Preferably, the two ends of the inclined lever are respectively formed with a first inclined surface, and the first inclined surface is inclined relative to the first direction;

[0030] The inner wall surface of the hollow cavity is provided with a matching inclined surface to form a second inclined surface, and the inclination angle of the second inclined surface matches that of the first inclined surface.

[0031] The first inclined surface and the second inclined surface slide in contact.

[0032] When the force-bearing frame moves along the first direction, the second inclined plane slides relative to the first inclined plane, pushing the inclined lever to slide laterally. The lateral sliding of the inclined lever is linked to the transmission column moving in the opposite direction to the movement direction of the force-bearing frame.

[0033] Preferably, the force conversion mechanism is a lever mechanism, comprising:

[0034] The fulcrum is fixedly set on the outer side wall of the top end of the outer sleeve;

[0035] The first lever arm is a rod-shaped structure. Its first end is slidably connected to a sliding connecting block fixed at the top of the transmission column, and its second end is rotatably connected to the fulcrum. The first lever arm swings around the fulcrum as the transmission column moves.

[0036] The second lever arm is a rod-shaped structure. Its first end is coaxially connected to the second end of the first lever arm at the fulcrum. The second lever arm is set at an angle to the first lever arm. The second lever arm swings synchronously with the first lever arm around the fulcrum. The second end of the second lever arm extends away from the fulcrum and is connected to the orthodontic force application component.

[0037] Preferably, the angle between the first lever arm and the second lever arm is 90° to 120°, and the angle can be adjusted according to individual patient differences to ensure that the force transmission efficiency meets clinical needs.

[0038] Preferably, the elastic reset element is a nickel-titanium alloy spring;

[0039] The spring is compressed and stores elastic potential energy under the action of the driving force, and releases the elastic potential energy when the driving force is removed, driving the first component and the second component to reset in a direction away from each other.

[0040] Preferably, it also includes a transpalatal connecting rod, which is a rod-shaped structure extending laterally, with its first end connected to the fixing seat or the outer sleeve of the support base, and its second end extending to the opposite side of the oral cavity and connected to the corresponding support structure of the same dentition area on the opposite side, forming a multi-tooth joint anchorage.

[0041] The transpalatal connector is a 3D-printed metal rod custom-made according to the patient's palate shape, and the shape of the transpalatal connector matches the curved shape of the patient's palatal vault.

[0042] Preferably, the orthodontic force-applying component is a nickel-titanium tension spring, one end of which is slidably connected to the second end of the second lever arm, and the other end of which is connected to the anterior orthodontic attachment. The nickel-titanium tension spring undergoes elastic deformation under the drive of the force conversion mechanism, applying a traction force along the second direction to the anterior orthodontic attachment, where the second direction is distal.

[0043] Preferably, the first dentition is the maxillary dentition, and the second dentition is the mandibular dentition; the first direction is the vertical direction, and the second direction is the horizontal direction.

[0044] Compared with the prior art, the beneficial effects of the present invention are:

[0045] This invention, through a support base fixed in the molar region and its overlapping telescopic structure, transmits the vertical pressure generated by the patient's natural occlusion to the force-bearing frame. This pressure is then converted into the reverse motion of the transmission column via the inclined surface of the inclined lever, and further converted into horizontal anterior tooth traction force through the rotation of the lever mechanism. Simultaneously, this vertical pressure directly acts on the molars to form anchorage reinforcement, achieving a synergistic effect of anchorage reinforcement and anterior tooth traction. An elastic repositioning element drives the components to reposition after occlusion, and, in conjunction with a nickel-titanium tension spring, maintains continuous light traction during the occlusal interval, ensuring uniform and stable traction force. A transpalatal connecting rod connects the two support bases to form multi-tooth combined anchorage, further enhancing molar stability. The entire device is fixed intraorally, requiring no active operation from the patient, thus avoiding surgical implantation and related risks. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic cross-sectional view of the nested structure of the support substrate of the present invention; Figure 3 This is a schematic diagram of the occlusal surface of the device of the present invention after it has been installed in the dental arch.

[0047] In the diagram: 1. Support base; 11. Fixing seat one; 12. Outer sleeve; 13. Inner sliding component; 14. Fixing seat two; 131. Force-bearing frame; 132. Transmission column; 133. Inclined lever; 134. First inclined plane; 135. Mating inclined plane; 136. Sliding connecting block; 2. Force input component; 3. Force conversion mechanism; 31. Fulcrum; 32. First lever arm; 33. Second lever arm; 4. Elastic repositioning component; 5. Transpalatal connecting rod; 6. Orthodontic force application component; 7. Anterior orthodontic attachment. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please see Figures 1 to 3 One embodiment provided by the present invention:

[0050] To address the technical problem of existing orthodontic appliances where anchorage enhancement and traction force application are independent and lack synergy, and to achieve the goal of automatically generating continuous orthodontic force without the need for active patient operation, this invention provides an occlusal driven orthodontic force conversion and molar anchorage enhancement device.

[0051] The device mainly includes a support base 1, a force input component 2, a force conversion mechanism 3, an elastic repositioning component 4, a transpalatal connecting rod 5, an orthodontic force application component 6, and anterior tooth orthodontic accessories 7. Among them, the support base 1 is the basic load-bearing structure of the device and is fixedly installed in the patient's maxillary molar area. By fixing the device in the mouth and using the patient's natural biting movement as the power source, the dependence of traditional devices on the patient's active cooperation can be completely eliminated.

[0052] Please see Figure 1 and Figure 2 To address the issue of insufficient anchorage stability in molars, the support base 1 specifically includes a fixation seat 11, an outer sleeve 12, and an inner sliding member 13. In this embodiment, the fixation seat 11 can be a molar band, which is fixed to the buccal surface of the maxillary first molar, providing a stable mounting base for the entire device. The outer sleeve 12 is a hollow tubular structure extending vertically, with one side fixedly connected to the fixation seat 1. The inner sliding member 13 is slidably fitted inside the outer sleeve 12, with its outer side wall slidingly engaging with the inner wall of the outer sleeve 12, allowing the inner sliding member 13 to reciprocate along the axial direction of the outer sleeve 12. This overlapping and telescopic structure ensures both the compactness of the device within the confined oral cavity space and achieves [the desired stability]. The components are precisely slidably fitted together. The lower end of the inner sliding member 13, which is close to the force input member 2, constitutes the first component, and the upper end of the inner sliding member 13, which is away from the force input member 2, constitutes the second component. When driven, the inner sliding member 13 slides upward relative to the outer sleeve 12 in the vertical direction, thereby introducing the biting pressure into the device for subsequent force conversion. The force input member 2 is fixed to the buccal surface of the mandibular molar by the fixing seat 2 14. In this embodiment, the force input member 2 is a rectangular block, which can be made of medical stainless steel or titanium alloy. Its position is opposite to the lower end of the inner sliding member 13, which is the first component. When biting, the force input member 2 pushes the first component upward, thereby transmitting the chewing force to the interior of the support base 1.

[0053] For further information, please refer to [link / reference]. Figure 2To achieve precise conversion of biting pressure into driving force, the inner sliding member 13 specifically includes a force-bearing frame 131, a transmission column 132, and a diagonal lever 133. The force-bearing frame 131 is located at the lower end of the inner sliding member 13, forming the first component. The force-bearing frame 131 is a frame structure with a hollow inner cavity. Its bottom surface is closed on the side facing the force input member 2, and its upper surface is open on the side facing the force conversion mechanism 3. The outer wall of the force-bearing frame 131 slides in conjunction with the inner wall of the outer sleeve 12. The transmission column 132 is located at the lower end of the inner sliding member 13. The upper end of the moving part 13 constitutes the second component; the lower end of the transmission column 132 extends into the hollow cavity of the force-bearing frame 131 from the opening on the upper side of the force-bearing frame 131 and is slidably connected to the force-bearing frame 131; the top end of the transmission column 132 passes through the top end of the outer sleeve 12 and extends out of it; through this sliding connection structure in which the force-bearing frame 131 and the transmission column 132 are interlocked, the accuracy and stability of the relative motion between the two are ensured; the oblique lever 133 is inserted into the interior of the transmission column 132 in the transverse direction, i.e., horizontal direction, laying the structural foundation for the subsequent conversion of the motion direction.

[0054] To solve the technical problem of converting vertical motion into reverse vertical motion and to ensure precise and controllable force transmission, the inclined lever 133 and the inner wall of the force-bearing frame 131 form a precise inclined surface fit structure; specifically, please refer to... Figure 2 The inclined lever 133 has two ends forming a first inclined surface 134, which is inclined relative to the vertical direction. The inner wall surface of the hollow cavity of the force-bearing frame 131 is provided with a matching inclined surface 135 to form a second inclined surface. The inclination angle of the second inclined surface is precisely matched with that of the first inclined surface 134. The first inclined surface 134 and the second inclined surface slide in contact. When the force-bearing frame 131 moves upward in the vertical direction, the second inclined surface slides relative to the first inclined surface. Since both are inclined surfaces, the vertical movement of the force-bearing frame 131 is converted into the horizontal sliding of the inclined lever 133 through the inclined surface cooperation. The horizontal sliding of the inclined lever 133 is linked to the movement of the transmission column 132 in the opposite direction to the movement of the force-bearing frame 131 through its cooperation structure with the transmission column 132, that is, the transmission column 132 moves downward. Through this inclined surface-inclined lever linkage mechanism, the precise motion conversion of "force-bearing frame moving upward → inclined lever moving laterally → transmission column moving in the opposite direction" is realized, providing a stable power input for the subsequent horizontal traction force output.

[0055] To solve the core technical problem of converting vertical motion into horizontal traction force, the force conversion mechanism 3 is specifically a lever mechanism, installed at the top of the outer sleeve 12 and connected between the transmission column 132 and the orthodontic force application component 6. This lever mechanism includes a fulcrum 31, a first lever arm 32, and a second lever arm 33. The fulcrum 31 is fixedly set on the outer side wall of the top of the outer sleeve 12, serving as the rotation axis of the entire lever mechanism. The fulcrum 31 can use stainless steel bearings to ensure flexible rotation and reduce friction loss. The first lever arm 32 is a rod-shaped structure, with its first end slidably connected to the top of the transmission column 132 via a sliding connecting block 136. Specifically, the sliding connecting block 136 is fixedly set at the top of the transmission column 132, and one end of the first lever arm 32 is slidably engaged with the sliding connecting block 136. The second end of the first lever arm 32 is rotatably connected to the fulcrum 31. When the transmission column 132 moves downward, the sliding connecting block 136 pushes one end of the first lever arm 32 downward, causing the first lever arm 32 to swing around the fulcrum 31. The second lever arm 33 is... The rod-shaped structure has its first end coaxially connected to the second end of the first lever arm 32 at the fulcrum 31. The second lever arm 33 is set at a certain angle to the first lever arm 32, preferably between 90° and 120°. The second lever arm 33 swings synchronously with the first lever arm 32 around the fulcrum 31, and its second end extends horizontally away from the fulcrum 31. Through this lever mechanism, the vertical downward movement of the transmission column 132 is converted into the horizontal swing output of the second lever arm 33 through the swing of the first lever arm 32 and the torque transmission of the fulcrum 31. This structural design cleverly converts the vertical occlusal pressure, which is difficult to use directly, into a horizontal traction force that meets the requirements of orthodontic mechanics. At the same time, the lever arm ratio optimizes and amplifies the force, ensuring that the force transmission efficiency meets clinical needs.

[0056] To address the technical problem of rapid force decay in traditional elastic traction devices and ensure the continuity of corrective force during the intermittent biting period, the elastic reset component 4 employs a nickel-titanium alloy spring, housed within the hollow cavity of the force-bearing frame 131. The upper end of the spring connects to one end of the transmission column 132 extending into the hollow cavity, while the lower end connects to the bottom surface of the force-bearing frame 131. When the force-bearing frame 131 is pushed upward by the force input component 2, the transmission column 132 moves downward in the opposite direction, compressing the spring and storing elastic potential energy. When the biting force is released, the spring releases the stored elastic potential energy, driving the force-bearing frame 131 downward and the transmission column 132 to reset upward. The nickel-titanium alloy material possesses excellent superelasticity and fatigue resistance, ensuring that the spring maintains stable mechanical properties during repeated compression-release cycles, thus solving the problem of force decay after long-term use of traditional springs.

[0057] To further enhance the horizontal stability of the molars and address the technical issue of insufficient unilateral molar anchorage, the device also includes a transpalatal connecting rod 5. The transpalatal connecting rod 5 is a rod-shaped structure extending laterally. Its first end is fixedly connected to the fixing seat 11 or outer sleeve 12 of the support base 1, and its second end extends to the opposite side of the oral cavity and is fixedly connected to the corresponding support structure in the opposite maxillary molar region. Through the transpalatal connecting rod 5, the support bases 1 on both sides are connected as one, forming multi-tooth joint anchorage, which enables the molars on both sides to support each other in the horizontal direction, significantly enhancing the ability of the molars to resist the traction reaction force of the anterior teeth. The transpalatal connecting rod 5 preferably adopts a three-dimensional printed metal rod that is customized according to the patient's palatal morphology. Its shape is precisely matched with the curved surface shape of the patient's palatal dome, which can ensure structural strength and avoid pressure stimulation on the palatal soft tissue, thus realizing personalized and precise treatment.

[0058] The orthodontic force-applying component 6 is specifically a nickel-titanium tension spring, the proximal end of which is slidably connected to the second end of the second lever arm 33, and the distal end of which is fixedly connected to the anterior orthodontic attachment 7. The anterior orthodontic attachment 7 can be a bracket or traction hook fixed to the labial surface of the anterior teeth. When the second lever arm 33 swings, the nickel-titanium tension spring undergoes elastic deformation, applying a traction force in the horizontal direction and pointing distally to the anterior orthodontic attachment 7. The sliding connection between the nickel-titanium tension spring and the second lever arm 33 allows the direction of the traction force to be adaptively adjusted, avoiding the unexpected stress that a rigid connection may cause to the teeth.

[0059] Working principle:

[0060] Occlusal phase: When the patient's upper and lower teeth are naturally occluded, such as during eating, chewing, and swallowing, the force input component 2 of the mandible contacts the bottom surface of the force frame 131 of the maxilla and applies an upward driving force in the vertical direction. This driving force simultaneously produces two mechanical effects, solving the technical problem that the anchorage enhancement and traction force application are independent in traditional devices.

[0061] Effect 1 is anchorage enhancement: The vertical upward driving force of the force input component 2 on the force-bearing frame 131 is directly transmitted to the maxillary molar through the fixing seat 11, forming a vertical indentation force, which makes the molar root more stably fitted into the alveolar bone. At the moment of occlusion, the molar anchorage is significantly enhanced, and the anchorage enhancement effect is correspondingly improved as the occlusal force increases, realizing a positive correlation between anchorage and occlusal force;

[0062] Effect 2 is force conversion drive: Under the action of this vertical driving force, the force-bearing frame 131 slides upward relative to the outer sleeve 12. At this time, the second inclined surface 135 of the inner wall of the hollow cavity of the force-bearing frame 131 slides relative to the first inclined surface 134 at both ends of the inclined lever 133, pushing the inclined lever 133 to slide horizontally in the lateral direction. The lateral sliding of the inclined lever 133, through its cooperation structure with the inside of the transmission column 132, links the transmission column 132 to move downward in the opposite direction to the movement direction of the force-bearing frame 131. During this process, the hollow cavity of the force-bearing frame 131... The elastic reset component 4, i.e., the nickel-titanium alloy spring, is compressed and stores elastic potential energy. When the transmission column 132 moves downward, the sliding connecting block 136 fixed at its top drives the first end of the first force arm 32 to move downward, causing the first force arm 32 to swing counterclockwise around the fulcrum 31. The second force arm 33 swings synchronously with the first force arm 32, and its second end swings horizontally, thereby pulling the orthodontic force application component 6, i.e., the nickel-titanium tension spring. The nickel-titanium tension spring undergoes elastic deformation and applies a horizontal traction force pointing distally, i.e. backward, to the anterior teeth connected to the anterior orthodontic attachment 7, thereby realizing distal movement of the anterior teeth.

[0063] Relaxation phase: When the patient releases their bite, the vertical driving force disappears; at this time, the elastic repositioning element 4 releases the stored elastic potential energy, driving the force-bearing frame 131 to move downward and the transmission column 132 to move upward and reposition; when the transmission column 132 moves upward, it drives the first force arm 32 to swing in the opposite direction through the sliding connecting block 136, and the second force arm 33 swings in the opposite direction and repositions accordingly; during the occlusal interval, the nickel-titanium tension spring relies on its own superelasticity to maintain continuous light traction on the anterior teeth, ensuring the continuity of the orthodontic force in time, and solving the problem of force attenuation during the occlusal interval of traditional rubber bands.

[0064] With each natural bite of the patient, the above bite-relaxation cycle repeats automatically, continuously generating a stable distal traction force on the anterior teeth without any active operation from the patient. At the same time, each bite applies an anchorage-enhancing force to the molars, forming a positive feedback synergistic effect of anchorage enhancement and traction force application.

[0065] Furthermore, in clinical applications, some parameters of the device can be adjusted according to the patient's specific condition to adapt to different types of malocclusion and different treatment stages. Specifically, the angle between the first lever arm 32 and the second lever arm 33 can be adjusted within the range of 90° to 120° to ensure that the force transmission efficiency is not less than 85%; the traction force of the orthodontic force application component 6, namely the nickel-titanium tension spring, can be adjusted by replacing springs of different specifications, and its connection position with the second lever arm 33 can be adjusted by sliding along the extension direction of the second lever arm 33; the transpalatal connecting rod 5 adopts a personalized metal rod 3D printed according to the patient's palate morphology, realizing individualized and precise adaptation of the device; the above-mentioned multiple adjustable designs make the same device applicable to different types of malocclusion and different treatment stages, reducing the complexity of clinical operation and treatment costs, and improving the clinical applicability of the device.

[0066] It should be noted that, in this embodiment, the first dentition is the maxillary dentition, the second dentition is the mandibular dentition, the first direction is the vertical direction, and the second direction is the horizontal direction; however, those skilled in the art will understand that, in orthodontic treatment, the setting of the first and second dentitions, and the first and second directions, can be adaptively adjusted according to actual needs based on the patient's specific malocclusion and treatment requirements, and all of these are within the scope of protection of this invention.

[0067] It should also be noted that the term "anchorage" mentioned in this invention is an orthodontic professional term, referring to a structure or device that resists the reaction force of orthodontic forces; "distal" refers to the direction along the dental arch towards the back of the oral cavity; and "mesial" refers to the direction along the dental arch towards the front of the oral cavity. Through the above technical solution, this invention transforms the patient's natural biting movement into a continuous and stable distal traction force for the anterior teeth, while simultaneously enhancing the molar anchorage. This fundamentally solves the clinical problems of poor compliance, unstable anchorage, and traction force attenuation in traditional orthodontic appliances, achieving efficient, safe, and comfortable orthodontic treatment.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bite-driven orthodontic force conversion and molar anchorage enhancement device, characterized in that, include: A support base (1) is used to fix the first dentition area in the patient's oral cavity. The support base (1) is provided with a first component and a second component that can move relative to each other in a first direction. Force input device (2) is used to fix in the patient's oral cavity in the area of ​​the second dentition opposite to the first dentition. The force input device (2) applies a driving force along the first direction to the first component of the support base (1) during biting motion. Force conversion mechanism (3) is connected between the second component of the support base (1) and the orthodontic force application component (6). The force conversion mechanism (3) converts the movement of the second component along the first direction into an output force along the second direction, which is at an angle to the first direction. An elastic reset member (4) is connected between the first component and the second component of the support base (1) and is used to drive the first component and the second component to reset relative to each other when the driving force is removed.

2. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 1, characterized in that, The supporting substrate (1) includes: Fixing base 1 (11) is used to fix it to the outer surface of the teeth in the first dentition region; The outer sleeve (12) is a tubular structure and is fixedly connected to the fixing seat (11); The inner sliding member (13) is slidably sleeved inside the outer sleeve (12), and the inner sliding member (13) can reciprocate along the axial direction of the outer sleeve (12); The end of the inner sliding member (13) near the force input member (2) constitutes the first component, and the end of the inner sliding member (13) away from the force input member (2) constitutes the second component; The inner sliding member (13) slides relative to the outer sleeve (12) along the first direction under the action of the driving force; The force input component (2) is fixed to the outer surface of the teeth in the second dentition area by the fixing seat (14), and is positioned opposite to and in contact with the first component during biting motion.

3. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 2, characterized in that, The inner sliding element (13) includes: A force-bearing frame (131) is disposed at one end of the inner sliding member (13) near the force input member (2) to form the first component. The force-bearing frame (131) is a frame structure with a hollow inner cavity. Its side facing the force input member (2) is closed to form a bottom surface, and its side facing the force conversion mechanism (3) is open to form an opening. The outer wall of the force-bearing frame (131) slides in conjunction with the inner wall of the outer sleeve (12). A transmission column (132) is disposed at the end of the inner sliding member (13) away from the force input member (2) to form the second component. One end of the transmission column (132) extends into the hollow cavity from the opening of the force-receiving frame (131) and is slidably connected to the force-receiving frame (131). The top end of the transmission column (132) passes through the top end of the outer sleeve (12) and extends out of it. An oblique lever (133) is transversely inserted inside the transmission column (132); The elastic reset member (4) is disposed in the hollow inner cavity. One end of the elastic reset member (4) is connected to the end of the transmission column (132) that extends into the hollow inner cavity, and the other end of the elastic reset member (4) is connected to the bottom surface of the force-bearing frame (131). The inclined lever (133) converts the motion of the force-bearing frame (131) along the first direction into the motion of the transmission column (132) in the opposite direction to the first direction.

4. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 3, characterized in that: The two ends of the inclined lever (133) respectively form a first inclined surface (134), and the first inclined surface (134) is inclined relative to the first direction; The inner wall surface of the hollow cavity is provided with a matching inclined surface (135) to form a second inclined surface, and the inclination angle of the second inclined surface matches that of the first inclined surface (134). The first inclined surface (134) and the second inclined surface slide in contact; When the force-bearing frame (131) moves along the first direction, the second inclined plane slides relative to the first inclined plane (134), pushing the inclined lever (133) to slide laterally. The lateral sliding of the inclined lever (133) is linked to the transmission column (132) to move in the opposite direction to the movement direction of the force-bearing frame (131).

5. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 4, characterized in that, The force conversion mechanism (3) is a lever mechanism, including: The fulcrum (31) is fixedly set on the outer side wall of the top of the outer sleeve (12); The first lever arm (32) is a rod-shaped structure. Its first end is slidably connected to the sliding connecting block (136) fixedly installed at the top of the transmission column (132), and its second end is rotatably connected to the fulcrum (31). The first lever arm (32) swings around the fulcrum (31) as the transmission column (132) moves. The second lever arm (33) is a rod-shaped structure. Its first end is coaxially connected to the second end of the first lever arm (32) at the fulcrum (31). The second lever arm (33) is set at an angle to the first lever arm (32). The second lever arm (33) swings synchronously with the first lever arm (32) around the fulcrum (31). The second end of the second lever arm (33) extends away from the fulcrum (31) and is connected to the orthodontic force application component (6).

6. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 5, characterized in that, The angle between the first lever arm (32) and the second lever arm (33) is 90° to 120°.

7. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 1, characterized in that, The elastic reset component (4) is a nickel-titanium alloy spring.

8. The occlusal-driven orthodontic force conversion and molar anchorage enhancement device according to claim 2, characterized in that, It also includes a transpalatal connecting rod (5), which is a rod-shaped structure extending laterally. Its first end is connected to the fixing seat (11) or the outer sleeve (12) of the support base (1), and its second end extends to the opposite side of the oral cavity and is connected to the corresponding support structure of the same dentition area on the opposite side, forming a multi-tooth joint anchorage.

9. The occlusal-driven orthodontic force conversion and molar anchorage enhancement device according to claim 5, characterized in that, The orthodontic force application component (6) is a nickel-titanium tension spring. One end of the nickel-titanium tension spring is slidably connected to the second end of the second lever arm (33), and the other end of the nickel-titanium tension spring is connected to the anterior orthodontic attachment (7). The nickel-titanium tension spring undergoes elastic deformation under the drive of the force conversion mechanism (3) and applies traction force along the second direction to the anterior orthodontic attachment (7). The second direction is the direction pointing to the distal.

10. The occlusal driven orthodontic force conversion and molar anchorage enhancement device according to claim 1, characterized in that, The first dentition is the maxillary dentition, and the second dentition is the mandibular dentition; the first direction is the vertical direction, and the second direction is the horizontal direction.

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