A multi-functional orthodontic traction device

Abstract

This application relates to the field of orthodontic appliances and discloses a multifunctional orthodontic traction device, including a self-ligating bracket for fixing and limiting the archwire. The top of the self-ligating bracket is equipped with an elastic closing hook, and a traction structure for orthodontic traction is hooked to the inner side of the elastic closing hook. A combined bracket for adhesive fixation to the posterior teeth is fixedly connected to one side of the traction structure. By using the self-ligating bracket and the combined bracket in conjunction with other brackets and archwires, the device achieves tooth positioning correction. The traction structure, installed between the self-ligating bracket and the combined bracket, generates horizontal tension, thereby performing Class II orthodontic traction on the teeth, achieving horizontal traction. Simultaneously, while the traction structure generates horizontal tension, a downward pressure structure converts part of the force into downward pressure on the molars, thus achieving molar indentation control. This device increases its usability through the integration of multiple functions and improves the efficiency of orthodontic treatment.

Description

Technical Field

[0001] This invention relates to the field of orthodontic appliance technology, specifically to a multifunctional orthodontic traction device. Background Technology

[0002] Orthodontic traction methods mainly include the following: First, intramaxillary traction: traction between individual jaws, usually between upper teeth or lower teeth. Second, intermaxillary traction: traction between the upper and lower jaws, often used to coordinate the relationship between the upper and lower jaws. Class II intermaxillary traction: mainly adjusts Class II occlusion by retracting the upper anterior teeth and moving the mandible forward. Class III intermaxillary traction: used to improve anterior crossbite and promote posterior movement of the lower dental arch.

[0003] Class II and III intermaxillary traction is usually performed simultaneously with orthodontic repositioning. This means that while using brackets to fix the archwire for orthodontic treatment, rubber bands are attached to the hooks of the brackets for horizontal traction, thereby adjusting the occlusal relationship of the molars or the position of the upper and lower jaws. However, this existing orthodontic traction method still has some drawbacks, especially in Class II intermaxillary traction. When the rubber band is fixed between the upper anterior teeth and the lower posterior molars, the horizontal traction force will retract the upper teeth and move the lower jaw forward. However, the rubber band used for oblique traction will generate a vertical component force while generating horizontal tension, especially when the lateral distance between the upper and lower teeth is small, the vertical force will be more obvious.

[0004] Therefore, improper operation during Class II orthodontic traction can easily lead to the risk of molar elongation. Furthermore, molar elongation can cause slight downward and backward rotation of the mandible, resulting in mandibular retrusion and elongation of the lower face. Moreover, existing orthodontic traction methods are usually relatively singular in function, only using rubber bands to correct the relationship between the upper and lower jaws or dental arches, and cannot control molar elongation while traction. Therefore, it is necessary to propose a multifunctional orthodontic traction device that integrates horizontal traction, downward pressure control of molars, and tooth position correction to improve orthodontic results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a multifunctional orthodontic traction device that solves the problem that existing orthodontic traction methods are relatively simple and cannot control the risk of molar elongation while traction is being performed.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a multifunctional orthodontic traction device, comprising a self-ligating bracket for fixing and limiting the archwire, wherein an elastic closing hook is installed on the top of the self-ligating bracket, a traction structure for orthodontic traction is hooked on the inner side of the elastic closing hook, and a combined bracket for adhesive fixation to the posterior tooth area is fixedly connected to one side of the traction structure, wherein the combined bracket includes a bracket base, and a locking plate shell is engaged inside the bracket base; The locking plate housing is equipped with a pressing structure, which includes a slider. An active block is fixedly connected to one side of the bottom of the slider, and a passive block is pressed on one side of the active block. The bottom of the passive block is symmetrically equipped with contact feet. The contact feet are used to press down on the buccal side of the molar in the posterior tooth region when the traction structure applies traction force to prevent the molar from elongating.

[0007] Preferably, the elastic closing hook includes a fixed hook, which is fixedly connected to the top of the self-locking bracket, and a fixed slot box is fixedly installed on the top of the self-locking bracket. A tension spring is installed inside the fixed slot box, and a limit block is fixedly connected to one end of the tension spring. A sliding column is fixedly connected to the top of the limit block.

[0008] Preferably, the sliding column is slidably disposed inside the fixed slot box by means of a limiting block and a tension spring, and the top end of the sliding column elastically abuts against the inner side of the hook of the fixed hook, forming a closed loop hook with the fixed hook for fixing one end of the traction structure.

[0009] Preferably, the traction structure includes a tension spring, and a silicone tube is sleeved on the outside of the tension spring, and a smooth layer is provided on the inner wall of the silicone tube. One end of the tension spring is hooked to the inside of the closed-loop hook, and the other end of the tension spring is fixedly connected to a fixing member.

[0010] Preferably, the fastener includes a threaded wire, which is folded in half, passes through the hanging ring at the end of the tension spring, and penetrates the interior of the pressing structure, with a ball sleeved at the tail end of the threaded wire.

[0011] Preferably, a pressing post is inserted into one side of the socket ball. By clamping the pressing post into the socket ball and deforming it, the socket ball is fixed to the end of the threaded wire, which is used to fix the tension spring and the pressing structure.

[0012] Preferably, a slide bar is fixedly connected to the inner wall of the locking plate housing, a slide groove is provided on one side of the slider, and the slider is slidably disposed on one side of the slide bar through the slide groove. A wire-passing hole is provided through one side of the slider, and the wire passes through the wire-passing hole and passes through the slider, and the ball abuts against one side of the slider.

[0013] Preferably, one side of the active block has an inclined structure, and the inclined surface of the active block is pressed and disposed on one side of the passive block. A pre-compression elastic sheet is symmetrically installed on one side of the passive block, and the pre-compression elastic sheet has a C-shaped structure and is installed between the bracket and the passive block.

[0014] Preferably, the prongs are inclined downwards towards the molar, and a contact piece is fixedly connected to the bottom of the prongs. A protective layer is provided on one side of the contact piece, and the protective layer of the contact piece abuts against the lower middle part of the buccal side of the molar.

[0015] Working principle: First, the self-ligating bracket and the combination bracket are glued to the buccal side of the teeth, using the same fixation method as other orthodontic brackets. The archwire can be fixed inside the self-ligating bracket and the combination bracket, allowing the structure to be used as a regular bracket for tooth positioning correction. When Class II orthodontic traction is required, one end of the traction structure is hooked to the inside of the elastic closed hook, and the other end is rigidly fixed to the inside of the pressure structure by a fastener, thus preventing the traction structure from slipping off during eating and providing continuous traction force for orthodontic traction. When the traction structure is placed between the self-ligating bracket and the combination bracket, it generates a horizontal pulling force and a vertical component force that causes the molars to elongate. At this time, the pulling force of the traction structure forces the active block to squeeze the passive block, thereby applying a downward force to the buccal side of the molar with the palps, thus depressing the molars and preventing them from elongating. This increases the molar depressing function while performing orthodontic traction.

[0016] This invention provides a multifunctional orthodontic traction device. It has the following beneficial effects: 1. This invention achieves tooth positioning correction by bonding and fixing self-ligating brackets and combined brackets to the buccal side of the teeth, in conjunction with other brackets and archwires. Furthermore, by installing a traction structure between the self-ligating brackets and combined brackets to generate horizontal tension, it applies Class II orthodontic traction to the teeth, achieving horizontal traction. Simultaneously, the downward pressure structure converts some of the force into downward pressure on the molars, thus achieving molar indentation control. This device enhances its usability and improves orthodontic efficiency through the integration of multiple functions.

[0017] 2. This invention uses a traction spring to pull the slider, which compresses the active block at the bottom to the passive block. This causes the passive block to drive the contact foot to form a downward pressure, which controls the downward pressure on the molar. This allows for control of the risk of molar elongation during orthodontic traction, especially when the horizontal distance between the upper and lower teeth is close. It can also decompose the vertical force that causes the molar to elongate to a greater extent, thereby eliminating the side effects of orthodontic traction to a certain extent.

[0018] 3. This invention uses an elastic closed hook to elastically close one end of the traction structure, while the other end is rigidly connected by a fixing member. This prevents the traction structure from slipping and falling off during use, allowing the user to wear the traction structure continuously while eating. This avoids the risk of traditional rubber bands falling off and being swallowed. Unlike rubber bands, it does not need to be removed while eating, increasing the user's daily orthodontic traction time and thus improving orthodontic traction efficiency.

[0019] 4. This invention fully integrates the pressing structure into the combined bracket, which is only slightly different in size from traditional brackets. The combined bracket and pressing structure are used in the middle and lower part of the molars, thus avoiding the occlusal area and not affecting the user's normal chewing. In addition, the outer surface of the combined bracket is generally arc-shaped, which reduces the user's discomfort and reduces the risk of oral abrasion and ulceration.

[0020] 5. This invention uses a traction structure with a tension spring and a smooth sleeve layer instead of a rubber band. This not only prevents the traction structure from falling off, but also ensures that the tension of the tension spring decays much slower than that of the rubber band, thus eliminating the need for frequent replacements. It also provides a more stable tension, guaranteeing the continuous effect of orthodontic traction. When replacing the traction structure, simply remove one end from the inside of the elastic closed hook, cut off the end of the threaded wire at the other end, and remove the obstruction of the sleeve ball to replace the traction structure. This prevents falling off while ensuring the traction structure can be replaced, avoiding the increased cost of replacing brackets. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the connection structure of the tension spring of the present invention; Figure 3 This is a schematic diagram of the traction structure of the present invention; Figure 4 This is a schematic diagram of the self-locking bracket of the present invention; Figure 5 This is a schematic diagram of the internal structure of the elastic closing hook of the present invention; Figure 6 This is a schematic diagram of the combined bracket of the present invention; Figure 7 This is a schematic diagram showing the fixed position of the pre-compressed elastic sheet of the present invention; Figure 8 This is a schematic diagram of the disassembled structure of the pressing structure of the present invention; Figure 9 For the present invention Figure 3 Enlarged view of point A; Figure 10 For the present invention Figure 5 Enlarged diagram of point A.

[0022] Among them, 1. self-locking bracket; 2. elastic closing hook; 21. fixed hook; 22. fixed slot box; 23. tension spring; 24. limiting block; 25. sliding column; 3. traction structure; 31. tension spring; 32. silicone tube; 33. smooth layer; 34. fastener; 341. threading wire; 342. socket ball; 343. pressing column; 4. combined bracket; 41. bracket seat; 42. locking plate shell; 5. pressing structure; 51. slide bar; 52. slider; 53. slide groove; 54. active block; 55. passive block; 56. pre-compression elastic sheet; 57. contact foot; 58. contact piece; 59. threading hole. Detailed Implementation

[0023] 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.

[0024] Please see the appendix Figure 1-10 This invention provides a multifunctional orthodontic traction device, including a self-ligating bracket 1 for fixing and limiting the archwire. An elastic closing hook 2 is installed on the top of the self-ligating bracket 1. A traction structure 3 for orthodontic traction is hooked on the inner side of the elastic closing hook 2. A combined bracket 4 for adhesive fixation to the posterior tooth area is fixedly connected to one side of the traction structure 3. The combined bracket 4 includes a bracket base 41. A locking plate shell 42 is engaged inside the bracket base 41. A pressing structure 5 is installed inside the locking plate shell 42. The pressing structure 5 includes a slider 52. An active block 54 is fixedly connected to one side of the bottom of the slider 52. A passive block 55 is pressed on one side of the active block 54. A contact foot 57 is symmetrically installed on the bottom of the passive block 55. The contact foot 57 is used to press down on the buccal side of the molar in the posterior tooth area when the traction structure 3 applies traction force to prevent the molar from elongating. In use, the self-ligating bracket 1 and the combined bracket 4 are glued and fixed to the buccal side of the teeth. In conjunction with other brackets and archwires, the tooth position correction function is achieved. Then, one end of the traction structure 3 is elastically closed and hooked by the elastic closing hook 2, and the other end is rigidly connected to the pressing structure 5 by the fixing member 34. The traction structure 3 is installed between the self-ligating bracket 1 and the combined bracket 4 to generate horizontal tension, which performs Class II orthodontic traction on the teeth and achieves the horizontal traction function. At the same time as the traction structure 3 generates horizontal tension, the pressing structure 5 converts part of the force into downward pressure to depress the molars, thereby achieving the function of pressing down to control the molars. The main structure of the pressing structure 5 is installed inside the locking plate housing 42. Its volume is similar to that of traditional brackets. The combined bracket 4 and the pressing structure 5 are used in the middle and lower position of the molars, thus avoiding the occlusal area and not affecting the user's normal chewing. The outer surface of the combined bracket 4 is generally arc-shaped, which reduces the user's discomfort and reduces the risk of oral abrasion and ulceration.

[0025] Please see the appendix Figure 1-3 The traction structure 3 includes a tension spring 31, and a silicone tube 32 is sleeved on the outside of the tension spring 31. A smooth layer 33 is provided on the inner wall of the silicone tube 32. One end of the tension spring 31 is hooked to the inside of the closed loop hook, and the other end of the tension spring 31 is fixedly connected to a fastener 34. The traction structure 3, which uses a tension spring 31 with a smooth sleeve 33 instead of a rubber band, has a much slower tension decay time than a rubber band. Therefore, it does not need to be replaced frequently, and the wearing time can be extended to 3-4 weeks. This allows for regular visits to the dentist to check the orthodontic progress and replace or adjust the traction structure 3. Compared with a rubber band, the tension spring 31 can provide the required tension more stably, ensuring the continuous effect of orthodontic traction. The length of the silicone tube 32 is slightly greater than the length of the tension spring 31. When the tension spring 31 is stretched, the silicone tube 32 can cover the outside of the tension spring 31 to protect the teeth and oral mucosa, preventing the tension spring 31 from rubbing and scratching the inside of the mouth. When the tension spring 31 contracts, the silicone tube 32 is squeezed and forms natural folds on its outside. When cleaning the mouth, you only need to open your mouth to extend the silicone tube 32, which facilitates the cleaning of food residue. At the same time, a smooth layer 33 is provided on the inner wall of the silicone tube 32 to facilitate the smooth sliding of the tension spring 31 inside the silicone tube 32 when it is extended or retracted.

[0026] Please see the appendix Figure 1-3 5 and appendix Figure 8-10 The elastic closed hook 2 includes a fixed hook 21, which is fixedly connected to the top of the self-locking bracket 1. A fixed slot box 22 is fixedly installed on the top of the self-locking bracket 1. A tension spring 23 is installed inside the fixed slot box 22. A limit block 24 is fixedly connected to one end of the tension spring 23. A sliding column 25 is fixedly connected to the top of the limit block 24. The sliding column 25 is slidably disposed inside the fixed slot box 22 through the limit block 24 and the tension spring 23. The top end of the sliding column 25 elastically abuts against the inside of the hook of the fixed hook 21 and forms a closed loop hook with the fixed hook 21 for fixing one end of the traction structure 3. The fastener 34 includes a thread 341, which is folded in half, passes through the hanging ring at the end of the tension spring 31, and passes through the interior of the pressing structure 5. A ball 342 is sleeved at the tail end of the thread 341. A pressing post 343 is inserted into one side of the ball 342. The pressing post 343 is inserted into the ball 342 and deformed by clamping it, so that the ball 342 is fixed at the tail end of the thread 341. This is used to fix the tension spring 31 and the pressing structure 5. A slide bar 51 is fixedly connected to the inner side wall of the locking plate housing 42. A groove 53 is opened on one side of the slider 52, and the slider 52 is slidably disposed on one side of the slide bar 51 through the groove 53. A thread hole 59 is opened through one side of the slider 52, and the thread 341 passes through the thread hole 59 and passes through the slider 52. The ball 342 abuts against one side of the slider 52. When in use, the hanging ring at one end of the tension spring 31 is held by tweezers and pushed into the contact point between the fixed hook 21 and the sliding post 25. This causes the limiting block 24 to move within the fixed slot box 22, forcing the limiting block 24 to move the sliding post 25 towards the inside of the hook of the fixed hook 21, thereby opening the fixed hook 21 and allowing the hanging ring to enter. After the hanging ring enters, the limiting block 24 is reset by the elasticity of the tension spring 23, thereby causing the sliding post 25 to re-abut against the inside of the hook of the fixed hook 21, forming a closed loop hook and preventing the hanging ring from falling off. Then, insert the insertion wire 341 into the inner side of the hanging ring at the other end of the tension spring 31, and fold the insertion wire 341 in half and insert it into the inner side of the wire hole 59. Next, attach the sleeve ball 342 to the end of the insertion wire 341. Use tweezers to hold the sleeve ball 342 and squeeze the pressing column 343 into its interior. The deformation of the pressing column 343 itself will fix the sleeve ball 342 to the end of the insertion wire 341. When the tension spring 31 is in use, pull the sleeve ball 342 to abut against one side of the slider 52 to limit and fix the end of the tension spring 31, thereby preventing the traction structure 3 from sliding off during use. Users can wear the traction structure 3 continuously while eating, avoiding the risk of traditional rubber bands falling out and being swallowed, thus increasing the safety of the device and increasing the daily orthodontic traction time, thereby improving orthodontic traction efficiency. When the traction structure 3 is replaced and adjusted regularly, the dentist only needs to use tweezers to remove the loop from inside the elastic closed hook 2, and then cut off the socket ball 342 at the end of the thread 341 to remove the traction structure 3 from between the self-locking bracket 1 and the combined bracket 4.

[0027] Please see the appendix Figure 1-3 and attached Figure 6-8One side of the active block 54 has an inclined structure, and the inclined surface of the active block 54 is pressed and disposed on one side of the passive block 55. A pre-compression elastic sheet 56 is symmetrically installed on one side of the passive block 55. The pre-compression elastic sheet 56 has a C-shaped structure and is installed between the bracket seat 41 and the passive block 55. The contact foot 57 is inclined towards the lower part of the molar, and a contact piece 58 is fixedly connected to the bottom end of the contact foot 57. A protective layer is provided on one side of the contact piece 58, and the protective layer of the contact piece 58 abuts against the lower part of the buccal side of the molar. In use, the traction spring 31 pulls the slider 52, causing the slider 52's groove 53 to slide slightly on the outside of the slider 51. This presses the active block 54 against the passive block 55. Because the active block 54 has an inclined structure, when the active block 54 slightly presses, the tension of the traction spring 31 changes according to the tension intensity, correspondingly converting a portion of the force into the pressing force of the active block 54. Furthermore, the movement of the active block 54 pressing the passive block 55 is relatively small, thus maintaining the pressure value within an appropriate range. This effectively prevents molar elongation while avoiding excessive force that could lead to root resorption and periodontal tissue damage. Damage occurs when the passive block 55 compresses the pre-compression elastic sheet 56, which in turn compresses the contact foot 57 to one side, thereby generating a downward force on the contact foot 57. This causes the protective layer on one side of the contact piece 58 to press down the molar on the lower middle part of the buccal side, thus controlling the risk of molar elongation during orthodontic traction. Especially when the horizontal distance between the upper and lower teeth is close, it can decompose the vertical force that causes molar elongation to a greater extent, thus eliminating the side effects of orthodontic traction to some extent. The protective layer on one side of the contact piece 58 can be made of medical-grade polyetheretherketone or reinforced PPSU material to prevent the contact piece 58 from directly contacting the molar and damaging the enamel.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional orthodontic traction device, comprising a self-locking bracket (1) for fixing and limiting the archwire, characterized in that, The top of the self-ligating bracket (1) is equipped with an elastic closing hook (2), and the inner side of the elastic closing hook (2) is hooked with a traction structure (3) for orthodontic traction. A combination bracket (4) for bonding and fixing to the posterior tooth area is fixedly connected to one side of the traction structure (3). The combination bracket (4) includes a bracket seat (41), and a locking plate shell (42) is engaged inside the bracket seat (41). The locking plate housing (42) is equipped with a pressing structure (5), and the pressing structure (5) includes a slider (52). An active block (54) is fixedly connected to one side of the bottom of the slider (52), and a passive block (55) is pressed on one side of the active block (54). A contact foot (57) is symmetrically installed on the bottom of the passive block (55). The contact foot (57) is used to press down on the buccal side of the molar in the posterior tooth region when the traction structure (3) applies traction force to prevent the molar from elongating.

2. The multifunctional orthodontic traction device according to claim 1, characterized in that, The elastic closing hook (2) includes a fixed hook (21), and the fixed hook (21) is fixedly connected to the top of the self-locking bracket (1), and a fixed slot box (22) is fixedly installed on the top of the self-locking bracket (1). A tension spring (23) is installed inside the fixed slot box (22), and a limit block (24) is fixedly connected to one end of the tension spring (23). A sliding column (25) is fixedly connected to the top of the limit block (24).

3. The multifunctional orthodontic traction device according to claim 2, characterized in that, The sliding column (25) is slidably disposed inside the fixed slot box (22) by means of the limiting block (24) and the tension spring (23), and the top end of the sliding column (25) elastically abuts against the inside of the hook of the fixed hook (21), and forms a closed loop hook with the fixed hook (21) for fixing one end of the traction structure (3).

4. The multifunctional orthodontic traction device according to claim 3, characterized in that, The traction structure (3) includes a tension spring (31), and a silicone tube (32) is sleeved on the outside of the tension spring (31). The inner wall of the silicone tube (32) is provided with a smooth layer (33). One end of the tension spring (31) is hooked to the inside of the closed loop hook, and the other end of the tension spring (31) is fixedly connected to a fastener (34).

5. A multifunctional orthodontic traction device according to claim 4, characterized in that, The fastener (34) includes a thread (341) which is folded in half, passes through the hanging ring at the end of the tension spring (31), and passes through the interior of the pressing structure (5), and the end of the thread (341) is fitted with a ball (342).

6. A multifunctional orthodontic traction device according to claim 5, characterized in that, A pressing column (343) is inserted into one side of the socket ball (342). By clamping the pressing column (343) into the socket ball (342) and deforming it, the socket ball (342) is fixed to the tail end of the thread (341) for fixing the connection between the tension spring (31) and the pressing structure (5).

7. A multifunctional orthodontic traction device according to claim 6, characterized in that, The inner wall of the locking plate housing (42) is fixedly connected to a slide bar (51). A slide groove (53) is provided on one side of the slider (52), and the slider (52) is slidably disposed on one side of the slide bar (51) through the slide groove (53). A wire-passing hole (59) is provided on one side of the slider (52), and the wire (341) passes through the wire-passing hole (59) and passes through the slider (52), and the ball (342) abuts against one side of the slider (52).

8. A multifunctional orthodontic traction device according to claim 1, characterized in that, One side of the active block (54) has an inclined structure, and the inclined surface of the active block (54) is pressed and disposed on one side of the passive block (55). A pre-compression elastic sheet (56) is symmetrically installed on one side of the passive block (55), and the pre-compression elastic sheet (56) has a C-shaped structure and is installed between the bracket seat (41) and the passive block (55).

9. A multifunctional orthodontic traction device according to claim 1, characterized in that, The foot (57) is inclined downward towards the molar, and a contact piece (58) is fixedly connected to the bottom end of the foot (57). A protective layer is provided on one side of the contact piece (58), and the protective layer of the contact piece (58) abuts against the lower middle part of the buccal side of the molar.

Images