An appliance for expanding arch springs

Abstract

The application relates to the technical field of oral correction instruments, and particularly relates to a device for expanding the spring of an expander, which comprises an expander body, a plurality of retaining clamps arranged on the two sides of the expander body, a plurality of connecting steel frames arranged between the retaining clamps and the expander body and fixedly connected at the two ends of the connecting steel frames on the expander body and the retaining clamps, and a protection device fixedly arranged on the expander body, wherein the protection device comprises two protection plates arranged on the expander body and used for blocking the apertures and grooves of the expander body, a receiving groove arranged on the opposite side of the two protection plates and extending towards the interior of the protection plates, and extension blocking plates slidably inserted into the two protection plates through the receiving groove. The setting of the protection plates blocks the food debris from entering the gap between the expansion screw spring and the connecting steel frame. The extension blocking plates block the gap between the two protection plates, so that the food residues are prevented from being accumulated in the apertures and grooves between the expansion screw spring and the supporting frame.

Description

Technical Field

[0001] This application relates to the technical field of orthodontic appliances, and in particular to an expander spring device for an orthodontic appliance. Background Technology

[0002] The expander spring device of an orthodontic appliance is an appliance used for teeth straightening. Its main structure includes the expander body, retention clasps, and a connecting steel frame located between the retention clasps and the expander body, with both ends fixedly connected to the expander body and the retention clasps respectively. The expander body includes two parallel support frames, an expander coil spring passing through the two support frames and threaded to the two support frames, and an adjustment hole on the side of the expander coil spring. When the patient wears the device, the medical staff can insert a tool into the adjustment hole and apply force to the tool, causing the adjustment ring to drive the expander coil spring to rotate, causing the support frames to move away from each other, thereby increasing the device to generate orthodontic force and ultimately expanding the width and length of the upper and lower dental arches.

[0003] However, in actual use, due to the gaps and grooves between the expander coil spring and the support frame, food residue is easily trapped inside the expander, making it very inconvenient for patients to clean the expander. Therefore, this application proposes an expander spring device for an orthodontic device to prevent food residue from accumulating in the gaps and grooves between the expander coil spring and the support frame. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide an expansion spring device for an orthodontic appliance, used to prevent food residue from accumulating in the gaps and grooves between the expansion coil spring and the support frame.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: a bow-expanding spring device for an orthodontic appliance, comprising a bow expander body, a retaining ring assembly disposed on both sides of the bow expander body, a connecting steel frame disposed between the retaining ring assembly and the bow expander body, and a protective device fixedly disposed on the bow expander body. The retaining ring assembly includes retaining retaining rings located at the front and rear ends of the bow expander body. One end of the connecting steel frame is fixedly connected to the retaining retaining ring, and the other end is fixedly connected to the bow expander body. The protective device includes two protective plates that are installed side by side and spaced apart on the bow expander body and are used to block the holes and grooves of the bow expander body, a receiving groove opened on one side of the two protective plates and extending into the interior of the protective plates, and an extension baffle whose two ends are slidably inserted into the two protective plates through the receiving groove.

[0006] By adopting the above technical solution, the protective plates can directly block the gaps and grooves on the expander body, preventing food debris from entering these hard-to-clean areas. For example, during a patient's eating process, food debris moves in the mouth with chewing. The protective plates can prevent these debris from entering the gaps in the expander body. However, during the use of the expander spring device, medical staff need to periodically adjust the expander spring device to orthodontically adjust the patient's teeth. During this process, the expander body expands, causing the two protective plates to move away from each other, creating a gap between them. This can lead to food debris entering the expander body. The extension baffle solves this technical problem. With the extension baffle, when the two protective plates move away from each other, the two ends of the extension baffle gradually extend from the receiving groove to block the gap between the two protective plates, further preventing food debris from entering the expander body. This achieves the goal of preventing food debris from accumulating in the gaps and grooves of the expander body.

[0007] Furthermore, the bow expander body includes two parallel support frames, a bow expander coil spring passing through the two support frames and threadedly connected to the two support frames, and an adjusting gear concentrically fixed in the middle of the bow expander coil spring. A portion of the adjusting gear extends out from between the two protective plates. Two extension baffles are provided and located on both sides of the adjusting gear, and the side of the extension baffle abuts against the tooth top surface of the adjusting gear.

[0008] While the protective device prevents food residue from accumulating in the gaps and grooves between the expander spring and the support frame, it also necessitates that medical staff disassemble the protective device each time they adjust the expander spring, which is inconvenient. The adjustment gear solves this problem. Part of the adjustment gear extends between the two protective plates, allowing medical staff to directly access the adjustment gear without disassembling the expander or performing complex procedures. Furthermore, the exposed gear provides good support and guidance, enabling faster and more accurate adjustments, thus making the adjustment of the expander spring more convenient.

[0009] Furthermore, both of the protective plates are equipped with an elastic sealing device located between the protective plate and the adjusting gear.

[0010] Furthermore, the elastic sealing device includes a sealing plate located between two protective plates and slidably inserted into the protective plates, and a sealing spring disposed within the protective plates for pushing the sealing plate against the adjusting gear. One end of the sealing plate abuts against the adjusting gear, and the other end is fixedly connected to the sealing spring.

[0011] While the adjustment gear makes it more convenient for medical staff to adjust the expander spring device, the two protective plates move away from each other when the expander spring device is adjusted periodically. This causes a gap to appear between the protective plates and the adjustment gear, which may allow food debris to enter the expander body. The elastic sealing device solves this technical problem. When the two protective plates move away from each other and a gap appears between the protective plates and the adjustment gear, the sealing spring pushes the sealing plate against the circumference of the adjustment gear to fill the gap, thereby preventing food debris from entering the expander body due to the gap between the protective plates and the adjustment gear.

[0012] Furthermore, the closed spring is provided in multiple forms.

[0013] By adopting the above technical solution, sufficient thrust is provided for the sealing plate.

[0014] Furthermore, the support frame has mounting screw holes on its surface, and each of the two protective plates has a mounting structure for fixing the protective plates through the mounting screw holes on its opposite sides.

[0015] Furthermore, the mounting structure includes a mounting plate fixedly mounted on the protective plate and mounting screws passing through the mounting plate and threadedly connected to the protective plate via mounting screw holes.

[0016] By adopting the above technical solution, when medical staff install protective devices, they only need to place the two protective plates on the two support frames respectively and align the mounting plates with the mounting screw holes. Then, they can pick up the mounting screws and screw them in, so that the mounting plates are connected to the protective plates through the mounting screw holes.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] The protective device directly blocks the openings and grooves on the expander body, preventing food debris from entering these hard-to-clean areas. For example, during eating, food debris moves in the mouth with chewing; the protective plate prevents this debris from entering the gap between the expander coil spring and the connecting steel frame. It also adapts to the expander body as it expands, continuously protecting it. The adjustable gear design allows medical staff to directly access the gear without disassembling the expander or performing complex procedures. The exposed gear provides good support and guidance, allowing for faster and more accurate adjustments, making the adjustment of the expander spring mechanism more convenient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0020] Figure 2 It is along Figure 1 A partial sectional view of line AA in the middle;

[0021] Figure 3 yes Figure 2 Enlarged view of section B in the middle.

[0022] Reference numerals: 1. Bow expander body; 10. Support frame; 11. Bow expander coil spring; 12. Adjusting gear; 2. Retaining ring; 3. Connecting steel frame; 4. Protective device; 40. Protective plate; 41. Storage slot; 42. Extension baffle; 5. Elastic sealing device; 50. Sealing plate; 51. Sealing spring; 6. Mounting structure; 60. Mounting plate; 61. Mounting screw. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] Reference Figure 1 , Figure 2 A bow-expanding spring device for a corrective device includes a bow expander body 1, multiple retaining ring assemblies respectively disposed on both sides of the bow expander body 1, a connecting steel frame 3 disposed between the retaining ring assemblies and the bow expander body 1, and a protective device 4 fixedly disposed on the bow expander body 1. The retaining ring assembly includes retaining retaining rings 2 located at the front and rear ends of the bow expander body 1. One end of the connecting steel frame 3 is fixedly connected to the retaining retaining rings 2, and the other end is fixedly connected to the bow expander body 1. The protective device 4 includes two protective plates 40 installed on the bow expander body 1 to block the gaps and grooves of the bow expander body 1, and a protective plate 40 formed on the opposite side of the two protective plates 40. The bow expander body 1 includes two parallel support frames 10, a bow expander coil spring 11 that passes through the two support frames 10 and is threaded to the two support frames, and an adjusting gear 12 that is concentrically fixed in the middle of the bow expander coil spring 11. A portion of the adjusting gear 12 extends out between the two protection plates 40. The extending baffle 42 has two pieces and is located on both sides of the adjusting gear 12. The side of the extending baffle 42 abuts against the tooth top surface of the adjusting gear 12.

[0025] The connecting steel frame 3 is fixedly connected to the expander body 1 and the retention clasps 2 by welding. There are four retention clasps 2 in total, with each group consisting of two retention clasps 2. The four retention clasps 2 are located at the four corners of the rectangular frame formed by two parallel support frames 10. The connecting steel frame 3 is strip-shaped, and the protective plate 40 is rectangular, covering the gap and groove between the two parallel support frames 10. The expander coil spring is made of metal wire and is spiral-shaped, with both ends fixed to the two support frames. The mechanism of the expander coil spring force is as follows: by rotating the coil spring (e.g., rotating 1 / 4 turn every 2-3 days), it undergoes elastic deformation and stores elastic potential energy. When released, the spring returns to its original deformation, generating a continuous and gentle orthodontic force that pushes the teeth outward (buccal side), thereby expanding the dental arch.

[0026] By setting up the protective plate 40, the gaps and grooves on the expander body 1 can be directly blocked, preventing food debris from entering these hard-to-clean areas. For example, during the patient's eating process, food debris will move in the oral cavity with the chewing action, and the protective plate 40 can prevent these debris from entering the gap between the expander coil spring 11 and the connecting steel frame 3.

[0027] However, during the use of the expander body 1, medical staff need to adjust the expander body 1 regularly so that it can orthodontically treat the patient's teeth. During this process, the expander body 1 will expand, causing the two protective plates 40 to move away from each other, resulting in a gap between the two protective plates 40. This may cause food debris to enter the expander body 1. The extension baffle 42 solves this technical problem. By setting the extension baffle 42, when the two protective plates 40 move away from each other, the two ends of the extension baffle 42 will gradually extend from the storage groove 41 to block the gap between the two protective plates 40, further preventing food residue from entering the expander body 1. This achieves the purpose of preventing food residue from accumulating in the gaps and grooves between the expander coil spring 11 and the support frame 10.

[0028] Although the protective device 4 prevents food residue from accumulating in the gaps and grooves between the expander coil spring 11 and the support frame 10, it also means that medical staff must remove the protective device 4 each time they adjust the expander spring device before they can rotate the expander coil spring 11. This is very inconvenient for medical staff when adjusting the expander spring device. The setting of the adjusting gear 12 solves this technical problem. Since part of the adjusting gear 12 extends between the two protective plates 40, medical staff can directly access the adjusting gear 12 when adjusting the expander without disassembling the expander or performing complicated procedures. Furthermore, the exposed adjusting gear 12 provides good support and guidance, allowing medical staff to perform adjustments more quickly and accurately, thus making it more convenient for medical staff to adjust the expander spring device.

[0029] In other embodiments, the adjusting gear 12 can be replaced with a roller, which can also achieve the purpose of adjusting the bow expander spring device. Compared with the roller, the adjusting gear 12 has a raised surface and greater friction, which allows medical staff to adjust the bow expander spring device stably.

[0030] Although the adjustment gear 12 makes it more convenient for medical staff to adjust the expander spring device, the two protective plates 40 will move away from each other when the medical staff adjusts the expander spring device periodically. This causes a gap to appear between the protective plate 40 and the adjustment gear 12, and food debris may enter the expander body 1. To solve this technical problem, refer to... Figure 3 In this embodiment, an elastic sealing device 5 is provided in both protective plates 40, located between the protective plate 40 and the adjusting gear 12. The elastic sealing device 5 includes a sealing plate 50 located between the two protective plates 40 and slidably inserted into the protective plate 40, and a sealing spring 51 provided in the protective plate 40 for pushing the sealing plate 50 to abut against the adjusting gear 12. One end of the sealing plate 50 abuts against the adjusting gear 12, and the other end is fixedly connected to the sealing spring 51.

[0031] With the setting of the elastic sealing device 5, when the two protective plates 40 are far apart and a gap appears between the protective plate 40 and the adjusting gear 12, the sealing spring 51 pushes the sealing plate 50 against the circumference of the adjusting gear 12 to fill the gap, thereby preventing food debris from entering the bow spreader body 1 due to the gap between the protective plate 40 and the adjusting gear 12. In addition, multiple sealing springs 51 are provided to provide sufficient thrust for the sealing plate 50.

[0032] In other embodiments, the sealing spring 51 can be replaced by an elastic rubber column, which can also achieve the purpose of pushing the sealing plate 50 against the circumference of the adjusting gear 12. Compared with the elastic rubber column, the extension of the sealing spring 51 is longer, which makes the distance between the two protective plates 40 longer, so as to accommodate different patients.

[0033] In this embodiment, the support frame 10 has mounting screw holes on its surface. The two protective plates 40 are provided with mounting structures 6 on opposite sides of each other, which are fixed to the protective plates 40 through the mounting screw holes. The mounting structure 6 includes a mounting plate 60 fixed on the protective plate 40 and mounting screws 61 that pass through the mounting plate 60 and are threaded to the protective plate 40 through the mounting screw holes.

[0034] Two mounting screw holes are provided on both sides of the support frame 10, and the mounting plate 60 is fixedly installed on the opposite side of the two protective plates 40 and facing the mounting screw holes. This fixing can be done by welding, bonding or integration.

[0035] With the installation structure 6, when medical staff install the protective device 4, they only need to place the two protective plates 40 on the two support frames 10 respectively and align the mounting plate 60 with the mounting screw hole. Then, they can pick up the mounting screw 61 and screw it in, so that the mounting plate 60 is connected to the protective plate 40 through the mounting screw hole. This makes it more convenient for medical staff to install and remove the protective device 4.

[0036] In other embodiments, the protective plate 40 may also be fixed to the support frame 10 by welding or bonding. However, compared to welding or bonding, the installation structure 6 makes it easier for medical staff to remove the protective plate 40, simply by turning the mounting screws 61.

[0037] The specific implementation process is as follows: First, medical staff adjust the retaining ring 2 according to the patient's dental mold. Then, the connecting steel frame 3 is welded to the outside of the retaining ring 2, and the other end of the connecting steel frame 3 is welded to the end of the support frame 10. After all the retaining rings 2 are welded, the two protective plates 40 are placed on the two support frames 10 respectively, and the mounting plate 60 is aligned with the mounting screw hole. Then, the mounting screw 61 is picked up and screwed in, so that the mounting plate 60 is threadedly connected to the protective plate 40 through the mounting screw hole.

[0038] When the expander needs to be adjusted, simply contact the adjusting gear 12 directly and rotate the adjusting gear 12 to rotate the expanding coil spring 11, causing the two support frames 10 to move away from each other to expand the entire device and orthodontize the patient's teeth.

[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spring-expanding device for an orthodontic appliance, characterized in that, The device includes a bow expander body, a retaining ring assembly on both sides of the bow expander body, a connecting steel frame between the retaining ring assembly and the bow expander body, and a protective device fixedly mounted on the bow expander body. The retaining ring assembly includes retaining rings located at the front and rear ends of the bow expander body. One end of the connecting steel frame is fixedly connected to the retaining ring, and the other end is fixedly connected to the bow expander body. The protective device includes two protective plates installed side by side and spaced apart on the bow expander body to block the gaps and grooves of the bow expander body, a receiving groove opened on one side of the two protective plates and extending into the interior of the protective plates, and an extension baffle with both ends slidably inserted into the two protective plates through the receiving groove.

2. The bow-expanding spring device of the orthodontic appliance according to claim 1, characterized in that, The bow expander body includes two parallel support frames, a bow expander coil spring that passes through the two support frames and is threaded to the two support frames, and an adjusting gear that is concentrically fixed in the middle of the bow expander coil spring. A portion of the adjusting gear extends out between two protective plates. Two extension baffles are provided and are located on both sides of the adjusting gear, and the side of the extension baffle abuts against the tooth top surface of the adjusting gear.

3. The bow-expanding spring device of the orthodontic appliance according to claim 2, characterized in that, Both of the aforementioned protective plates are equipped with an elastic sealing device located between the protective plate and the adjusting gear.

4. The bow-expanding spring device of the orthodontic appliance according to claim 3, characterized in that, The elastic sealing device includes a sealing plate located between two protective plates and slidably inserted into the protective plates, and a sealing spring disposed within the protective plates for pushing the sealing plate against the adjusting gear. One end of the sealing plate abuts against the adjusting gear, and the other end is fixedly connected to the sealing spring.

5. The bow-expanding spring device of the orthodontic appliance according to claim 4, characterized in that, The closed spring is provided in multiple ways.

6. The bow-expanding spring device of the orthodontic appliance according to claim 2, characterized in that, The support frame has mounting screw holes on its surface, and the two protective plates each have a mounting structure on their opposite sides that are fixed to the protective plates by means of the mounting screw holes.

7. The bow-expanding spring device of the orthodontic appliance according to claim 6, characterized in that, The mounting structure includes a mounting plate fixedly mounted on the protective plate and mounting screws passing through the mounting plate and threadedly connected to the protective plate via mounting screw holes.

Images