Mechanical adjustable corrector for correcting mandibular retraction

Abstract

The utility model provides a mechanical adjustable corrector for correcting mandibular retraction, which is respectively assembled on the left side and the right side of a tooth and comprises an upper connecting and fixing component, a rotating cylinder, a lower connecting and fixing piece, a slope-shaped moving piece and a spring component capable of adjusting compression force, and the slope-shaped moving part is used for continuously generating horizontal thrust in the upper jaw moving direction to the lower connecting and fixing part by utilizing horizontal thrust applied to the slope-shaped moving part by the rotary cylinder in cooperation with the spring assembly when the upper jaw moves. According to the utility model, through the movement matching of the rotary cylinder and the slope-shaped moving piece, the compressed spring assembly continuously generates continuous thrust on the lower connecting and fixing piece, so that thrust is applied to the lower jaw, and the retroduction of the lower jaw is improved; meanwhile, the compression force of the spring assembly can be adjusted according to the requirements of different patients and the treatment progress, so that the corrector can adjust the thrust effect applied to the lower jaw, and the treatment effect of mandibular retraction can be further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dental orthodontic equipment, and in particular relates to a mechanically adjustable corrector for correcting mandibular retrusion. Background Art

[0002] Mandibular retrognathia is a common dental misalignment, often caused by mandibular underdevelopment or maxillofacial asymmetry. Mandibular retrognathia not only impairs chewing function but also negatively impacts facial appearance and speech. Severe mandibular retrognathia can lead to social and psychological challenges, necessitating prompt correction.

[0003] Currently, correction methods for mandibular retrusion primarily include surgical and non-surgical correction. While surgical correction is effective, it carries significant risks and is expensive. Non-surgical correction primarily relies on braces, which gradually adjust the mandibular position through external force. These braces typically require long-term wear and can cause discomfort.

[0004] Traditional mandibular retrusion corrector designs are usually fixed in a certain position and cannot be adjusted according to the treatment process or the patient's specific needs. This may cause discomfort to the patient in the later stages of treatment and affect the correction effect. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the existing corrector cannot be adjusted according to the treatment progress and the patient's own response, and to provide a mechanically adjustable corrector for correcting mandibular retrusion.

[0006] To achieve the above objectives, the technical solutions provided by this utility model are:

[0007] A mechanically adjustable corrector for correcting mandibular retrusion is provided. The corrector is mounted on each side of the tooth. The corrector comprises:

[0008] An upper connecting fixing assembly, fixedly connected to the upper teeth;

[0009] The rotating cylinder is rotatably connected to the lower end of the upper connecting and fixing assembly;

[0010] A lower connecting fixture is fixedly connected to the lower row of teeth on one side of the upper connecting fixture assembly;

[0011] The sloped moving part is connected to the lower connecting fixed part in a limited sliding manner, and the upper surface is an upwardly inclined paraboloid, which is used for the rotating cylinder to roll upward on the upper surface and generate horizontal thrust on the sloped moving part;

[0012] A spring assembly is provided perpendicular to the ramp-shaped moving member and includes an adjusting rod, a spring, and an adjusting nut. The spring is sleeved between the ramp-shaped moving member and the lower connecting fixed member. One end of the adjusting rod is fixedly connected to the lower connecting fixed member, and the other end passes through the interior of the ramp-shaped moving member and is slidably connected thereto. The adjusting nut is mounted on the adjusting rod on one side of the lower connecting fixed member and is used to cooperate with the external thread provided on the adjusting rod to adjust the compression force of the spring.

[0013] Among them, the sloped moving part is used to utilize the horizontal thrust exerted by the rotating cylinder on the sloped moving part when the maxilla moves, and cooperate with the compressed spring assembly to continuously generate horizontal thrust in the maxilla moving direction on the lower connecting fixing part.

[0014] Furthermore, the upper connecting fixing assembly includes two fixed blocks and a first round stick arranged perpendicular to the fixed blocks. A cylindrical groove is provided on the inner wall of each fixed block. The two ends of the first round stick are respectively installed in the cylindrical groove. The rotating cylinder is sleeved on the outside of the first round stick and rotates relative to the first round stick.

[0015] Furthermore, the lower connecting fixing member is a concave connecting plate, and the opposite side surface of the sloped moving member is mounted on the concave connecting plate via a second round rod;

[0016] The upper surface of the sloped moving part is arranged along the opening direction of the concave connecting plate, the upper surface in a low position is located inside the concave connecting plate, and the upper surface in a high position extends out of the opening of the concave connecting plate and is close to the upper connecting fixing component. The horizontal position of the upper surface located inside the concave connecting plate is higher than the horizontal position of the top surface of the concave connecting plate, and the horizontal position of the bottom surface of the sloped moving part is higher than the horizontal position of the bottom surface of the concave connecting plate.

[0017] Furthermore, the curvature parameter of the upper surface of the sloped moving part is: k = 0.003 mm -1 , the upper surface equation is: y = 0.03x 2 , the inclination angle of the posterior 4 / 5 section of the upper surface is limited to within 30°.

[0018] Furthermore, grooves are provided on opposite side walls of the concave connecting plate for mounting the second round rod and for limiting the sliding displacement of the second round rod.

[0019] The advantages of the utility model are:

[0020] 1. Through the movement coordination between the rotating cylinder and the sloped movable part, the rotating cylinder can generate thrust on the sloped movable part, so that the compressed spring assembly continuously generates thrust on the lower connecting fixing part, thereby applying thrust to the mandible, thereby improving mandibular retraction.

[0021] 2. Through the set spring assembly, the pre-compression force of the spring assembly can be accurately adjusted according to the needs of different patients and the progress of treatment, so that the corrector can adjust the thrust effect applied to the mandible, which can further improve the treatment effect of mandibular retrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The features and advantages of the present invention will become more readily understood through the following description with reference to the accompanying drawings, which are not drawn to scale and in which some features are exaggerated or minimized to show details of particular components.

[0023] Figure 1 This is a schematic diagram of the overall structure of the corrector in the embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the embodiment of the utility model when the corrector is fully effective;

[0025] Figure 3 This is a schematic diagram of the overall structure of the corrector in the embodiment of the utility model when it is initially in effect;

[0026] Figure 4 This is a schematic diagram of the connection structure between the upper connecting fixing component and the rotating cylinder in an embodiment of the present utility model;

[0027] Figure 5 It is a schematic diagram of the position of the spring assembly in the embodiment of the present utility model.

[0028] In the figure: 1-tooth; 2-upper connecting and fixing assembly; 3-rotating cylinder; 4-slope-shaped moving part; 5-spring assembly; 51-adjusting rod; 52-spring; 53-adjusting nut; 6-lower connecting and fixing part. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings by means of exemplary embodiments of the present invention. It should be noted that the following detailed description of the present invention is only for the purpose of illustration and is not intended to limit the present invention.

[0030] A mechanically adjustable appliance for correcting mandibular retrusion, such as Figure 1 As shown, the braces are installed on both sides of the tooth 1, as shown in FIG. Figure 2 As shown, the corrector includes an upper connecting and fixing component 2, a rotating cylinder 3, a lower connecting and fixing member 6, a sloped moving member 4 and a spring component 5.

[0031] like Figure 2 、 4As shown, the upper connecting and fixing assembly 2 is fixedly connected to the upper row of teeth 1 and includes two fixing blocks and a first round rod arranged perpendicular to the fixing blocks. A cylindrical groove is provided on the inner wall of the lower end of each fixing block, and the ends of the first round rod are respectively installed in the cylindrical groove. The rotating cylinder 3 has a circular through-hole extending through the center and is sleeved on the outside of the first round rod, rotating relative to the first round rod. The upper connecting and fixing assembly 2 provides support for the rotating cylinder 3.

[0032] The rotating cylinder 3 is made of stainless steel, and its outer surface is processed with high precision and specially coated to reduce friction and improve comfort.

[0033] like Figure 2 、 5 As shown, the lower connecting and fixing member 6 is a concave connecting plate, which is fixedly connected to the lower row of teeth 1 on one side of the upper connecting and fixing component 2.

[0034] The upper connecting and fixing component 2 and the lower connecting and fixing member 6 are both made of medical titanium alloy to ensure biocompatibility and safety for long-term use.

[0035] like Figure 5 As shown, the ramp-shaped moving member 4 is connected to the concave connecting plate in a limited sliding manner and is arranged perpendicular to the rotating cylinder 3. The concave connecting plate provides support for the ramp-shaped moving member 4. The opposite side of the ramp-shaped moving member 4 is mounted on the concave connecting plate via a second round rod. The opposite side wall of the concave connecting plate is provided with a groove for mounting the second round rod and for limiting the sliding displacement of the second round rod. The groove acts like a slide rail and also serves as a limiter, allowing the second round rod to slide in the groove, thereby limiting the movement of the ramp-shaped moving member 4 on the concave connecting plate.

[0036] To avoid locking and ensure that the rotating cylinder 3 does not get stuck when rolling on the upper surface of the sloped moving part 4, the upper surface of the sloped moving part 4 is an upward-slanting parabola with a certain curvature, and the remaining surfaces are flat. It is made of high molecular polymer materials such as polytetrafluoroethylene, PTFE, etc., which have high lubricity and good wear resistance, can reduce friction and ensure smooth movement.

[0037] like Figure 5 As shown, the sloped moving member 4 is arranged along the opening direction of the concave connecting plate, the upper surface in the low position is located inside the concave connecting plate, the upper surface in the high position extends out of the opening of the concave connecting plate and is close to the upper connecting fixing component 2, and the horizontal position of the parabola located in the concave connecting plate is higher than the concave connecting plate, and the horizontal position of the bottom surface of the sloped moving member 4 is higher than the horizontal position of the bottom surface of the concave connecting plate.

[0038] In order to ensure that the interaction force between the rotating cylinder 3 and the sloped moving member 4 is mainly in the horizontal direction, the upper surface of the sloped moving member 4 is designed to have a specific angle and curvature.

[0039] The specific design parameters of the upper surface of the slope-shaped moving part 4 are:

[0040] The curvature parameter is: k = 0.003 mm -1 , the upper surface equation is: y = 0.03x 2 , the inclination angle of the posterior 4 / 5 section of the upper surface is limited to within 30°.

[0041] Through the above design, when the rotating cylinder 3 rolls, the force exerted on the sloped moving part 4 is mainly the horizontal component, thereby effectively reducing the vertical component and avoiding the adverse effects caused by the vertical force.

[0042] like Figure 5 As shown, the spring assembly 5 is arranged perpendicular to the ramp-shaped moving part 4. The spring assembly 5 includes an adjusting rod 51, a spring 52 and an adjusting nut 53. The spring 52 is made of stainless steel with high strength and good durability. The spring 52 is sleeved on the adjusting rod 51 between the ramp-shaped moving part 4 and the lower connecting fixed part 6. One end of the adjusting rod 51 is fixedly connected to the left inner wall of the concave connecting plate, and the outer side of the other end is smooth. It passes through the left side wall of the ramp-shaped moving part 4 and extends into the interior of the ramp-shaped moving part 4 and is slidably connected thereto. The ramp-shaped moving part 4 is provided with a channel for providing a moving space for the adjusting rod 51, so that the ramp-shaped moving part 4 can compress the spring 52 during the movement, so that the spring 52 can continuously generate a thrust on the lower connecting fixed part 6 to adjust the mandibular retraction. The adjusting nut 53 is installed on the adjusting rod 51 on one side of the lower connecting fixed part 6, and is used to cooperate with the external thread provided on the adjusting rod 51 to adjust the compression force of the spring 52.

[0043] In order to ensure that the spring assembly 5 is always in a compressed state and can effectively provide a corrective force, the initial distance between the slope-shaped moving part 4 and the lower connecting fixing part 6 should be reasonably set according to the characteristics of the spring 52 .

[0044] It is recommended that the spring 52 can be adjusted within the following range:

[0045] Spring 52 free length: 10 mm; initial compressed length: pre-compressed to an initial length of 5 mm using the adjusting nut 53 (adjustable from 3 to 7 mm, depending on individual patient needs); maximum compressed length: 8 mm. In actual use, the adjusting nut 53 is adjusted to pre-compress the spring 52 to an initial length of 5 mm, and then fine-tuned based on the patient's specific needs to ensure that the spring 52 is further compressed as the ramp-shaped moving member 4 slides to the right, thereby providing a continuous corrective force.

[0046] The corrector works as follows:

[0047] like Figure 1As shown, when the upper jaw moves when the mouth is opened, the upper connecting and fixing component 2 fixed on the upper jaw moves to the upper right. At this time, the rotating cylinder 3 at the lower end of the upper connecting and fixing component 2 rotates with the movement of the upper jaw, and converts the power into linear movement through contact with the ramp-shaped moving part 4, driving the ramp-shaped moving part 4 to move to the right in the groove on the lower connecting and fixing part 6. One end of the adjusting rod 51 penetrates into the ramp-shaped moving part 4, and the spring 52 of the adjusting rod 51 is compressed by the ramp-shaped moving part 4, continuously generating a rightward thrust on the lower connecting and fixing part 6, thereby achieving correction of the lower jaw. When the upper jaw moves to the highest point (the maximum opening angle), as shown in FIG. Figure 3 As shown, the rotating cylinder 3 also moves to the uppermost end of the ramp-shaped moving member 4.

[0048] Finally, it should be noted that the features mentioned and / or illustrated in the above description of the exemplary embodiments of the present invention may be combined in the same or similar manner into one or more other embodiments, and may be combined with or replace the features of other embodiments. The technical solutions obtained by such combination or replacement shall also be deemed to be included in the scope of protection of the present invention.

Claims

1. A mechanically adjustable brace for correcting mandibular retrusion, wherein the brace is mounted on each side of the tooth. include: An upper connecting fixing assembly, fixedly connected to the upper teeth; The rotating cylinder is rotatably connected to the lower end of the upper connecting and fixing assembly; A lower connecting fixture is fixedly connected to the lower row of teeth on one side of the upper connecting fixture assembly; The sloped moving part is connected to the lower connecting fixed part in a limited sliding manner, and the upper surface is an upwardly inclined paraboloid, which is used for the rotating cylinder to roll upward on the upper surface and generate horizontal thrust on the sloped moving part; A spring assembly is provided perpendicular to the ramp-shaped moving member and includes an adjusting rod, a spring, and an adjusting nut. The spring is sleeved on the adjusting rod between the ramp-shaped moving member and the lower connecting fixed member. One end of the adjusting rod is fixedly connected to the lower connecting fixed member, and the other end passes through the interior of the ramp-shaped moving member and is slidably connected thereto. The adjusting nut is mounted on the adjusting rod on one side of the lower connecting fixed member and is used to cooperate with the external thread provided on the adjusting rod to adjust the compression force of the spring. Among them, the sloped moving part is used to utilize the horizontal thrust exerted by the rotating cylinder on the sloped moving part when the maxilla moves, and cooperate with the compressed spring assembly to continuously generate horizontal thrust in the maxilla moving direction on the lower connecting fixing part.

2. The mechanically adjustable orthosis according to claim 1, characterized in that: The upper connecting fixing assembly includes two fixed blocks and a first round stick arranged perpendicular to the fixed blocks. A cylindrical groove is provided on the inner wall of each fixed block. The two ends of the first round stick are respectively installed in the cylindrical groove. The rotating cylinder is sleeved on the outside of the first round stick and rotates relative to the first round stick.

3. The mechanically adjustable orthosis according to claim 1, characterized in that: The lower connecting fixing member is a concave connecting plate, and the opposite side surface of the sloped moving member is mounted on the concave connecting plate through a second round rod; The upper surface of the sloped moving part is arranged along the opening direction of the concave connecting plate, the upper surface in a low position is located inside the concave connecting plate, and the upper surface in a high position extends out of the opening of the concave connecting plate and is close to the upper connecting fixing component. The horizontal position of the upper surface located inside the concave connecting plate is higher than the horizontal position of the top surface of the concave connecting plate, and the horizontal position of the bottom surface of the sloped moving part is higher than the horizontal position of the bottom surface of the concave connecting plate.

4. The mechanically adjustable orthosis according to claim 3, characterized in that: The curvature parameter of the upper surface of the sloped moving part is: k = 0.003 mm -1 , the upper surface equation is: y = 0.03x 2 , the inclination angle of the posterior 4 / 5 section of the upper surface is limited to within 30°.

5. The mechanically adjustable orthosis according to claim 3, characterized in that: The opposite side walls of the concave connecting plate are provided with grooves for installing the second round stick and for limiting the sliding displacement of the second round stick.

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