Jaw position correction device and method for manufacturing jaw position correction device

Abstract

A jaw position correction device is provided with a corrector (1), a retractor (20), and a correction helmet (50). The retractor (20) is provided with a pulled part (21) and a helmet fixing part (41). The correcting helmet (50) comprises a first covering part (51) for covering the front head part and the left and right head parts of the head, a second covering part (52) for covering the rear head part of the head, and a pair of left and right extending parts (54) extending downwards from the first covering part (51). A pair of left and right third covering parts (53) extending forward from the extension part (54) along the zygomatic arch part; and a first fixing part (55) for fixing the helmet fixing part (41). The pulled section (21) has: a first locking section (24) to which an upward force is applied by a first elastic member at the front end of the forward extending section (23); a second locking section (25) to which a forward force is applied by a second elastic member at the front end of the forward extending section (23); and a third locking section (27) to which an upward force is applied by a third elastic member at the rear end of the bending section (26).

Description

Technical Field

[0001] The invention relates to a jaw position correction device with a correction helmet and a manufacturing method thereof. A tractor is fixed to the correction helmet and is used to pull a corrector installed on the upper jaw in the oral cavity forward and upward. Background Art

[0002] In the prior art, in the field of orthodontics and oral and maxillofacial development and treatment, it is known that there is a corrective device that promotes the correct growth of the jaw position and dentition by pulling the corrector in the oral cavity forward from outside the oral cavity. For example, it is known that a person who has a corrector installed in the oral cavity wears a head device on his head, and uses a traction device installed between the head device and the corrector to pull the jaw position correction device forward (maxillofacial correction device). The head device has a structure of a wire frame assembled by fixing a sponge-like pad and a belt-like belt to a welded metal wire (see patent documents 1 to 3). With this structure, a head device that is light and easy to fit the shape of the head can be realized.

[0003] (Prior art literature) (Patent document) Patent Document 1: Japanese Patent No. 4058105 Patent Document 2: Japanese Patent No. 5466797 Patent Document 3: Japanese Patent Application No. 2021-500179 Summary of the invention

[0004] (Problems to be solved by the invention) However, on the other hand, the above-mentioned head device has a problem that its relative position with respect to the head may shift when subjected to external force, and it is difficult to stabilize the traction direction of the corrector due to its usage method. For example, when wearing the head device and lying on a sofa or bed, the position of the head device relative to the head may shift. As a result, the traction direction of the corrector changes, and the correction effect of the jaw position and dentition decreases. In particular, when the wearer of the head device is a child, there is a possibility that the hem of the clothes or the sleeves may be pulled by the wire rack during play, or the head device may hit the wall in the room, which may often cause the position of the head device to shift.

[0005] The present invention is proposed in view of such a problem, and one of its purposes is to provide a jaw correction device and a method for manufacturing the jaw correction device that can suppress the deviation of the traction direction by a simple structure. In addition, it is not limited to this purpose. As other purposes of the present application, there are also effects derived from the various structures shown in the "specific implementation method" to be described later and that cannot be obtained in the prior art.

[0006] (Measures taken to resolve the problem) The present application is implemented as the following disclosed modes or application examples to solve at least a part of the above-mentioned problems.

[0007] The disclosed jaw correction device is a jaw correction device comprising a corrector installed in the oral cavity for the upper jaw, a traction device for traction of the corrector forward and upward, and a correction helmet worn on the head of a person using the corrector and used to fix the traction device.

[0008] The retractor includes a retracted portion connected to the corrector and extending outside the oral cavity, and a helmet fixing portion fixed to the corrective helmet.

[0009] The corrective helmet comprises a first covering portion that covers the front and left and right sides of the head, a second covering portion that extends rearward from the first covering portion and covers the back of the head, a pair of left and right extended portions that extend downward from a portion of the first covering portion that covers the left and right sides of the head, a pair of left and right third covering portions that extend forward from the extended portions along the zygomatic arch and cover the vicinity of the zygomatic body, and a first fixing portion that is provided on the first covering portion and is used to fix the helmet fixing portion.

[0010] The pulled portion includes a first stop portion, a second stop portion, and a third stop portion, wherein the first stop portion is arranged at the front end of a front extension portion extending from the inside of the oral cavity to the front end to the outside of the oral cavity, and is applied with an upward force by a first elastic component installed between the first stop portion and the helmet fixing portion, the second stop portion is arranged at the front end of the front extension portion, and is applied with a forward force by a second elastic component installed between the second stop portion and the helmet fixing portion, and the third stop portion is arranged at the rear end of a curved portion extending from the front end of the front extension portion to the vicinity of the auricle, and is applied with an upward force by a third elastic component installed between the third stop portion and the corrective helmet.

[0011] The disclosed method for manufacturing a jaw correction device is a method for manufacturing a jaw correction device having the above-mentioned structure. First, a three-dimensional scanner is used to obtain information on the three-dimensional shape of the head. Based on the information on the three-dimensional shape obtained by the three-dimensional scanner, a 3D (three-dimensional) printer is used to form the correction helmet having the first covering part, the second covering part, the left and right pair of third covering parts, and the left and right pair of extension parts and having an internal shape corresponding to the three-dimensional shape. In addition, a traction device having a pulled part connected to the corrector installed on the upper jaw in the oral cavity and extending outside the oral cavity and a helmet fixing part fixed to the correction helmet is formed.

[0012] Then, the helmet fixing part is fixed to the first covering part in the corrective helmet. The first elastic component for applying an upward force to the pulled part is installed between the first stopper provided at the front end of the front extension part in the pulled part and the helmet fixing part. On the other hand, the second elastic component for applying a forward force to the pulled part is installed between the second stopper provided at the front end of the front extension part in the pulled part and the helmet fixing part. In addition, the third elastic component for applying an upward force to the pulled part is installed between the third stopper provided at the rear end of the curved part in the pulled part and the corrective helmet.

[0013] (Effects of the Invention) According to the disclosed technology, the stability of the wearing state can be improved, and the deviation of the pulling direction of the corrector caused by the pulling device can be suppressed. Therefore, the correct growth of the jaw position and the dentition can be promoted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a perspective view of a corrective helmet as an embodiment when viewed from an oblique front.

[0015] Figure 2 (A) and (B) show the view from the rear. Figure 1 A three-dimensional diagram of the state of the correction helmet.

[0016] Figure 3 An exploded perspective view of an orthodontic appliance installed in the upper jaw of the oral cavity.

[0017] Figure 4 It is a perspective view showing the structure of the pulled part of the tractor.

[0018] Figure 5 (A) and (B) are perspective views showing the structure of the helmet fixing part of the retractor.

[0019] Figure 6 It is a side view showing the wearing state of the correction helmet and the traction device.

[0020] Figure 7 The following is a flow chart showing the manufacturing procedure of a corrective helmet.

[0021] Figure 8 (A) and (B) are perspective views showing correction helmets as modified examples.

[0022] Fig. 9 (A) and (B) are perspective views showing correction helmets as modified examples. DETAILED DESCRIPTION

[0023] The disclosed corrective helmet is worn on the head of a person who has a corrector installed in the upper jaw of the oral cavity. A tractor for pulling the corrector forward and upward is fixed to the corrective helmet. The tractor is a device that applies a force to pull the corrector forward and upward relative to the corrective helmet, and is also called an active bow. As a specific example of the tractor, for example, a part of the structure described in Japanese Patent Gazette No. 5466797 can be used. In addition, there is a case where "jaw correction device" is used as the name of a whole having a corrector, a tractor, and a corrective helmet.

[0024] The disclosed correction helmet can replace the head device (a device worn on the head that fixes a sponge-like pad and a belt-like belt to a metal wire frame) in the existing RAMPA (registered trademark) device such as the device described in Japanese Patent No. 4058105 and Japanese Patent No. 5466797. The name RAMPA comes from the Right Angle Maxillary Protraction Appliance (a push correction device at the right angle of the maxilla). The jaw correction device with the disclosed correction helmet can also be called a RAMPA device.

[0025] The corrector is an instrument used to apply a pressing force toward the front and upward while aligning the maxillary teeth, and is also called ROA (RAMPA Oral Appliance). As a specific example of ROA, there is a corrector with a pressing plate (Sup-Ad) and an adjustment unit as described in Japanese Patent Gazette No. 6732272. The pressing force toward the front and upward can be applied by the corrector alone. On the other hand, by using the corrector, a correction helmet and a traction device together to increase the pressing force toward the front and upward, the correction effect of the jaw position and the teeth is improved.

[0026] The disclosed corrective helmet and jaw correction device can be suitably used for children whose jaws are in the growth stage (for example, children aged 6 to 12 years old). On the other hand, the disclosed corrective helmet and jaw correction device are not limited to the age of the target, and can also be used for teenagers and adults. In addition, unless otherwise specified, the directions shown in the embodiments (directions of the parts and parts constituting the jaw correction device) represent directions based on the person wearing the jaw correction device (directions observed from the perspective of the person).

[0027] Example

[0028] [1. Structure] [1-1. Corrective helmet] Figure 11 is a perspective view of the head of a person wearing a jaw correction device having a correction helmet 50 as an embodiment, as viewed from the oblique front. Figure 2 (A) and (B) are perspective views of the person as seen from the rear obliquely. The corrective helmet 50 is worn on the head of the person with the corrector 1 mounted on the upper jaw of the oral cavity.

[0029] The traction device 20 for pulling the corrector 1 forward and upward is fixed to the corrective helmet 50. The traction device 20 includes a pulled portion 21 connected to the corrector 1 and extending outside the oral cavity, a helmet fixing portion 41 fixed to the corrective helmet 50, and a plurality of elastic members 40 (40a to 40c) elastically connecting the pulled portion 21 and the helmet fixing portion 41 to apply a force to pull the pulled portion 21 forward and upward. Specific examples of the elastic member 40 include a rubber band, a coil spring, and the like.

[0030] like Figure 1 As shown, the corrective helmet 50 includes a first covering portion 51, a second covering portion 52, a third covering portion 53, an extension portion 54, a first fixing portion 55, a second fixing portion 56, and an inner pad 57. The first covering portion 51, the second covering portion 52, the third covering portion 53, and the extension portion 54 are integrally formed of a synthetic resin (plastic).

[0031] The inner pad 57 is a soft sponge-like member that elastically contacts the head, and is attached to the inner side surfaces of the first cover portion 51 and the second cover portion 52. In addition, the cheek pad 58 is a member that elastically contacts the skin near the zygomatic body, and is attached to at least the inner side surface of the third cover portion 53. Specific examples of the materials of the inner pad 57 and the cheek pad 58 include polyurethane foam, melamine foam, polyester foam, cloth, nonwoven fabric, pile material, sponge, and the like. Figure 1 The cheek pad 58 shown is formed by sewing a thick cloth (fluffy material) with a sponge embedded therein into a bag shape, and is attached so as to cover the peripheral surface of the third cover portion 53 .

[0032] The first covering part 51 is a part that covers the front part (forehead) and the left and right sides of the head. The first covering part 51 is formed into a curved shape that matches the frontal bone (frontal bone) and part of the side bones, and supports the front part and the left and right sides of the head through the inner pad 57. Figure 2 As shown in (A) in FIG. 1 , the first covering portion 51 is formed into a shape that covers the front of the head and the left and right sides of the head. Figure 2 As shown in (B) in FIG. 1 , the first covering portion 51 may be formed in a shape that goes around the left and right sides of the head to the rear of the auricle.

[0033] The first covering portion 51 may not be a shape that covers the entire front of the head and the left and right sides of the head. For example, an opening may be formed in the first covering portion 51 to achieve lightweight within a range that can stably support the front of the head and the left and right sides of the head. Alternatively, the overall shape may be simplified to a point that stably supports the front of the head and two points on the left and right sides of the head while ensuring the rigidity and strength of the first covering portion 51.

[0034] The second cover portion 52 is a portion extending backward from the first cover portion 51 to cover the back of the head. The second cover portion 52 is formed into a curved shape that matches a portion of the parietal bone and the occipital bone (occipital bone), and supports the back of the head through the inner pad 57 . Figure 2 The second covering portion 52 shown in (A) is an example in which the second covering portion 52 is extended backward from the portion of the first covering portion 51 that covers the left and right sides of the head. Figure 2 The second covering portion 52 shown in (B) is an example in which the second covering portion 52 is extended rearward from a portion of the first covering portion 51 that covers the front of the head.

[0035] Similar to the first covering portion 51, the second covering portion 52 may not be shaped to cover the entire occipital region. For example, an opening may be formed in the second covering portion 52 to achieve weight reduction within a range that can stably support the occipital region. Alternatively, the overall shape may be simplified to a degree that stably supports the left and right points of the occipital region and ensures the rigidity and strength of the second covering portion 52.

[0036] The extensions 54 are a pair of left and right portions extending downward from portions covering the left and right sides of the head in the first covering portion 51. The extensions 54 extend in the longitudinal direction so as to pass through the auricle and the area in front of it from top to bottom in a side view of the head.

[0037] The third covering part 53 is a pair of left and right parts extending forward along the cheekbones from the extension part 54 and covering the vicinity of the cheekbones. The third covering part 53 is formed into a curved shape that matches the cheekbones, and supports the vicinity of the cheekbones through the cheek pad 58 .

[0038] The zygomatic bone is composed of a zygomatic arch and a zygomatic body. The zygomatic arch is a portion extending in the front-back direction, and has a curved shape protruding outwardly to the left and right sides like an arch. The rear side of the zygomatic arch is joined to the temporal skull. In addition, the zygomatic body is a portion of the zygomatic bone located in front of the zygomatic arch, and is a portion extending from the bottom of the eye socket to the outside of the left and right sides. The front side of the zygomatic body is joined to the maxilla. The third covering portion 53 of this embodiment extends forward along the zygomatic arch from the lower part (near the lower end) of the extension portion 54, and covers the vicinity of the zygomatic body (zygomatic body or maxilla).

[0039] The first fixing portion 55 is provided in the cover portion 51 and is a portion for fixing the tractor 20. The first fixing portion 55 is provided at at least one position in the first cover portion 51. In consideration of the stability of the tractor 20, the first fixing portion 55 may be provided at a plurality of positions. In the present embodiment, the first fixing portion 55 is arranged near the left and right temples (near the portion corresponding to the temples) in the first cover portion 51. The first fixing portion 55 is formed in a hollow cylindrical shape into which, for example, the end portions of the front and rear extension portions 42 described later are inserted and fixed.

[0040] The second fixing portion 56 is a hole-shaped portion provided in the first covering portion 51 or the extension portion 54. The second fixing portion 56 is used to fix the third support portion 47 of the retractor 20 to be described later. The second fixing portion 56 is provided, for example, near the auricle. In the present embodiment, a pair of left and right second fixing portions 56 are provided near the first fixing portion 55 and near the boundary between the first covering portion 51 and the extension portion 54. In addition, the second fixing portion 56 may be provided at a plurality of positions, thereby being able to change the configuration position of the third support portion 47.

[0041] Figure 2 The second covering part 52 shown in (A) is provided as a pair of left and right parts, and extends almost horizontally from the part of the first covering part 51 that covers the left and right sides of the head through the top of the auricle to the back of the head. Among them, the left side of the pair of left and right second covering parts 52 is called the left back head covering part, and the other side is called the right back head covering part. The left back head covering part extends backward from the left side of the head, and the right back head covering part extends backward from the right side of the head.

[0042] In addition, a gap 61 is provided between the left and right occipital covering parts in a rear view of the corrective helmet 50. This facilitates relative movement and elastic deformation of the left and right occipital covering parts, facilitates wearing and removing of the corrective helmet 50, and improves wearing comfort (fitting feeling, stability feeling) of the corrective helmet 50.

[0043] In addition, if Figure 8 As shown in (A) in FIG. 1 , the left back head covering part and the right back head covering part can be connected by a belt member 63 (e.g., a rubber belt, a belt, a hook and loop fastener, etc.). For example, the left and right second covering parts 52 can be connected by forming openings in the left and right second covering parts 52 and inserting a belt therein. Alternatively, the hook surface of the hook and loop fastener can be adhered to the left and right second covering parts 52 and connected by the fur surface of the hook and loop fastener.

[0044] Figure 2The overall shape of the second covering portion 52 shown in (B) is a spoon shape that is thin at the top and becomes wider toward the bottom. In addition, a slit portion 62 is provided between the portion of the first covering portion 51 that covers the left and right sides of the head and the second covering portion 52 to separate these components in the horizontal direction. The upper end of the slit portion 62 reaches near the top of the head. As a result, the relative movement and elastic deformation of the first covering portion 51 and the second covering portion 52 become easy, the putting on and taking off of the corrective helmet 50 becomes easy, and the wearing comfort (sense of fit, sense of stability) of the corrective helmet 50 is improved. In addition, as Figure 8 As shown in FIG. 5B , the first covering portion 51 and the second covering portion 52 are connected by a belt member 63 .

[0045] [1-2. Correction device] Figure 3 It is an exploded perspective view for explaining the structure of the corrector 1. Figure 3 The two-dot chain lines in are virtual lines for showing the positions of the components before decomposition. The corrector 1 includes a pair of left and right sliding components 2 , a pressing plate 3 , an adjustment unit 4 , a pair of left and right guide holes 5 , and a guide component 6 .

[0046] The sliding member 2 is a pair of members respectively mounted on the right and left sides of the maxillary dentition. The sliding member 2 is provided with a stopper 13 and a curved surface 14, wherein the stopper 13 is stopped at a part such as a crown, and the curved surface 14 is extended from the stopper 13 along the upper jaw into a curved surface.

[0047] The retaining portion 13 is formed into a three-dimensional shape (impression shape of the teeth) that matches the shape of the teeth of the person wearing the corrector 1, for example, and is worn in a manner that covers the crown of the tooth. Alternatively, it can also be a structure that is indirectly worn on the teeth by fixing parts such as a correction band (a metal part formed in a ring shape surrounding the outer circumference of the teeth) and a wire. In addition, the curved surface portion 14 is formed into a curved surface shape that matches the upper jaw, for example. The portion of the curved surface portion 14 that contacts the upper jaw is formed into a three-dimensional shape that matches the upper jaw. A hollow cylindrical mounting metal part 12 for connecting the traction device 20 is buried in the curved surface portion 14.

[0048] The pressing plate 3 is a component that presses the upper jaw forward and upward (front and above). The pressing plate 3 is a curved component that is configured in a manner that spans the curved surface portion 14 on the left and right in a top view, and is extended along the median palatal suture of the maxillary bone. The upper surface side of the pressing plate 3 contacts the upper jaw (hard palate), so that it is formed into a three-dimensional shape that matches the upper jaw. A sliding plate 11 is installed between the sliding component 2 and the pressing plate 3, and the pressing plate 3 can slide relative to the sliding component 2. The sliding plate 11 is a component for facilitating the sliding of the pressing plate 3, and is formed into a curved surface by a resin sheet, a film, etc. for protecting the mucous membrane.

[0049] The adjustment unit 4 is a member for adjusting the distance between two sliding members 2 and is provided between a pair of sliding members 2. By rotating a nut member built into the adjustment unit 4, the sliding members 2 can be moved in a direction of approaching or moving away from each other, thereby adjusting the distance between the sliding members 2.

[0050] The guide holes 5 are holes formed in the slide members 2. The ends of the guide members 6 are inserted and fixed in the guide holes 5. The openings of the guide holes 5 are provided on the mutually adjacent facing surfaces (or the vicinity thereof) of the two curved surface portions 14 adjacent to each other.

[0051] The guide member 6 is a member for moving the pressing plate 3 forward and upward based on the position of the sliding member 2, and is provided between each sliding member 2 and the pressing plate 3. The guide member 6 includes a guide pin 7, a pin tube 8, a triangular portion 9, and beads 10.

[0052] The guide pin 7 is a member that is slidably inserted into the two guide holes 5 formed in the slide member 2. The overall shape of the guide pin 7 is a V-shape. In addition, the pin tube 8 is a cylindrical member that is fixed in a state of being inserted into the inside of the guide hole 5.

[0053] The triangular portion 9 is a member for connecting the guide pin 7 to the pressing plate 3, and is fixed to the fitting portion 15 of the pressing plate 3. The triangular portion 9 is formed in an isosceles triangle shape with the vertex facing forward in a plan view. The cylindrical bead portion 10 is fixed to the triangular portion 9. The guide pin 7 is provided so as to be loosely inserted into the bead portion 10 and penetrate the triangular portion 9.

[0054] When the interval between the left and right sliding members 2 widens, the pin tube 8 built into each sliding member 2 moves in parallel to the left and right while maintaining the angle. At this time, the guide pin 7 inserted into the pin tube 8 receives a reaction force from the force of the pin tube 8, which acts to move the guide pin 7 forward along the extension direction of the pin tube 8. Therefore, the guide pin 7 moves forward. In this way, the guide member 6 plays a role in moving the pressing plate 3 forward and upward as the distance between the two sliding members 2 increases.

[0055] [1-3. Tractor] Figure 4 2 is a perspective view showing the structure of a pulled portion 21 in the traction device 20 connected to the orthosis 1. Figure 5 (A) and (B) are perspective views showing the structure of the helmet fixing portion 41 of the retractor 20 that is fixed to the corrective helmet 50 . Figure 6It is a side view showing the wearing state of the traction device 20 and the corrective helmet 50. One end of the elastic member 40 is attached to the pulled portion 21, and the other end is attached to the helmet fixing portion 41. The helmet fixing portion 41 supports the elastic member 40 relative to the corrective helmet 50, and the pulled portion 21 is pulled forward and upward by the elastic member 40 (the first elastic member 40a and the second elastic member 40b).

[0056] like Figure 4 As shown, the pulled part 21 includes a mounting part 22, a front extension part 23, a first stopper 24, a second stopper 25, a bent part 26, a third stopper 27, and a movable unit 30. The components constituting the pulled part 21 are arranged in pairs on the left and right, and are formed into nearly mirror-symmetrical shapes on the left and right except for the movable unit 30. The mounting part 22, the front extension part 23, the first stopper 24, the second stopper 25, the bent part 26, and the third stopper 27 are integrally formed by bending or welding metal wires.

[0057] The mounting portion 22 is a portion that is inserted from the rear and fixed to the mounting metal component 12 of the corrector 1, and is provided as a pair of left and right portions. The mounting portion 22 is provided so that it can be inserted and removed relative to the mounting metal component 12. In addition, the front extension portion 23 is a portion that extends from the mounting portion 22 toward the front to the outside of the oral cavity, and is formed in a shape that extends linearly. In addition, the mounting portion 22 of this embodiment can be formed by bending the rear end of the wire-shaped front extension portion 23 by 180 degrees.

[0058] The first stopper 24 and the second stopper 25 are welded and fixed to the front end of each front extension 23, and are formed into hooks that can respectively hold the elastic member 40. The first stopper 24 is provided to extend forward from the front end of the front extension 23, and is a portion that is urged upward by the elastic member 40 (the first elastic member 40a). In addition, the second stopper 25 is provided to extend upward from the front end of the front extension 23, and is a portion that is urged forward by the elastic member 40 (the second elastic member 40b).

[0059] The curved portion 26 is a shaft-shaped portion that is welded and fixed to the front end of each front extension portion 23 and extends toward the rear side of the head toward the vicinity of the auricle. The curved portion 26 is formed in a curved shape that protrudes outward in a plan view. In addition, a third stopper 27 formed in a hook shape is provided at the rear end of the curved portion 26. The third stopper 27 is a portion that is urged upward by the elastic member 40 (third elastic member 40c). The position of the third stopper 27 is set to be located behind the mounting portion 22 in a side view.

[0060] The movable unit 30 is a unit for connecting the left and right front extensions 23 in a state where the width direction distance of the left and right front extensions 23 can be changed according to the movement of the sliding member 2. The movable unit 30 is provided with a pair of cylindrical movable pipes 31 fixed to at least one of the front extensions 23 and a pair of axial movable pins 32 fixed to the other front extension 23. The movable pin 32 is slidably inserted into the inside of the movable pipe 31. The direction of the cylindrical axis of the movable pipe 31 is consistent with the direction of the central axis of the movable pin 32, and both are set to the left and right direction. Figure 4 The illustrated movable unit 30 has two sets of movable tubes 31 and movable pins 32 pairs.

[0061] like Figure 5 As shown in (A) in FIG. 1 , the helmet fixing portion 41 includes a front-rear extension portion 42, a left-right extension portion 43, an extension portion 44, a first support portion 45, a second support portion 46, and a third support portion 47. The components constituting the helmet fixing portion 41 are formed into a shape that is nearly mirror-symmetrical in the left and right directions. The front-rear extension portion 42, the left-right extension portion 43, the extension portion 44, the first support portion 45, and the second support portion 46 are integrally formed by welding metal wires. The third support portion 47 is provided independently of these components.

[0062] The front and rear extension parts 42 are wire-shaped parts extending in the front and rear direction and provided as a pair of left and right parts. The rear end of the front and rear extension parts 42 is inserted into the hollow cylindrical first fixing part 55 and fixed by the fixing screw 48 at any insertion position. In the case where there is no need to adjust the fixing position, the front and rear extension parts 42 and the first fixing part 55 can be fixed by welding, or the first fixing part 55 can be omitted and the rear end of the front and rear extension parts 42 can be directly fixed to the corrective helmet 50 by bonding.

[0063] The left and right extensions 43 are wire-shaped portions that connect the front end portions of the left and right pair of front and rear extensions 42 in the left and right direction. The configuration position of the left and right extensions 43 is set, for example, at a position slightly above the mouth when viewed from the front of the person wearing the correction helmet 50. In addition, the extensions 4 are portions extending forward from the left and right extensions 43, and are provided as a pair of left and right. The extensions 44 of this embodiment are formed in a shape extending forward and obliquely downward from the left and right extensions 43.

[0064] In addition, the shapes of the front and rear extension parts 42 and the left and right extension parts 43 are not limited to the shapes shown in (A) in Figure 5. For example, Figure 5 As shown in (B) in the figure, a curved piece 42' bent into an arc shape may be used to form the portion corresponding to the front and rear extension portion 42 and the left and right extension portion 43. As a result, the width of the curved piece 42' can be easily changed (adjusted to match the width of the user's head), and the versatility of the helmet fixing portion 41 is improved.

[0065] A first support portion 45 and a second support portion 46 formed into a hook shape that can hold the elastic member 40 are provided at certain positions in the left and right extension portions 43 and the extension portion 44. The first support portion 45 is a portion that engages with the elastic member 40 (first elastic member 40a) that is locked to the first locking portion 24 and supports the reaction force to the bottom. In addition, the second support portion 46 is a portion that engages with the elastic member 40 (second elastic member 40b) that is locked to the second locking portion 25 and supports the reaction force to the rear. The first support portion 45 of this embodiment is provided on the left and right extension portions 43, and the second support portion 46 is provided on the extension portion 44.

[0066] The elastic member 40 (first elastic member 40a) connecting the first stopper 24 and the first supporter 45 is used to pull the pulled portion 21 upward relative to the helmet fixing portion 41, and therefore, it can also be called a vertical rubber (upper pulling rubber). Similarly, the elastic member 40 (second elastic member 40b) connecting the second stopper 25 and the second supporter 46 is used to pull the pulled portion 21 forward relative to the helmet fixing portion 41, and therefore, it can also be called a horizontal rubber (forward pulling rubber).

[0067] like Figure 6 As shown, the first support portion 45 is configured to be located at least above the first stop portion 24 of the pulled portion 21, preferably located near directly above the first stop portion 24. In addition, the second support portion 46 is configured to be located at least in front of the second stop portion 25 of the pulled portion 21, preferably located near directly in front of the second stop portion 25. Figure 5 In the examples shown in (A) and (B), the second support portion 46 is arranged at multiple positions, thereby finely adjusting the pulling direction of the second locking portion 25. Similarly, the first support portion 45 can be arranged at multiple positions to finely adjust the pulling direction of the first locking portion 24.

[0068] The third support portion 47 is a portion that engages with the elastic member 40 (third elastic member 40c) engaged with the third stopper 27 of the pulled portion 21 and supports the downward reaction force, and is provided as a pair of left and right. The third support portion 47 is formed in a hook shape that can engage the elastic member 40 (third elastic member 40c), and is inserted and fixed to the second fixing portion 56 of the correction helmet 50. The elastic member 40 (third elastic member 40c) engaged with the third support portion 47 pulls the third stopper 27 upward, thereby Figure 6 In the side view shown, a counterclockwise moment is generated in the mounting portion 22 of the pulled portion 21 and the mounting metal member 12, and the direction of the pressing force applied to the maxilla from the orthotic device 1 is optimized.

[0069] [2. Manufacturing sequence] Figure 7 Flowchart showing the manufacturing process of the correction helmet 50. For example, the correction helmet 50 is manufactured using a computer such as a workstation or server having a three-dimensional CAD system, a three-dimensional scanner device connected to the computer, and a 3D printer. In step A1, a person who uses the correction device 1 is used as an object, and the three-dimensional shape information of the head is scanned (obtained) by a three-dimensional scanner. Here, the scanned data is sent to the computer.

[0070] Then, in step A2, based on the information of the three-dimensional shape obtained by the three-dimensional scanner, data of the corrective helmet 50 having an internal shape corresponding to the three-dimensional shape is created on the three-dimensional CAD system, and based on the data, the corrective helmet 50 is formed by a 3D printer. Specific examples of synthetic resins that are materials for the corrective helmet 50 include ABS, PLA, PET, TPU, polyamide (nylon), photocurable resin, PC (polycarbonate), PP (polypropylene), and the like.

[0071] Here, in the formed corrective helmet 50, at least the first covering portion 51, the second covering portion 52, the third covering portion 53, and the extension portion 54 are formed. The first fixing portion 55 and the second fixing portion 56 may be included in advance in the manufacturing data of the corrective helmet 50. Alternatively, after the corrective helmet 50 without the first fixing portion 55 and the second fixing portion 56 is manufactured, the hole for mounting the first fixing portion 55 and the hole for becoming the second fixing portion 56 may be formed.

[0072] In step A3, the hollow cylindrical first fixing portion 55 is mounted on the corrective helmet 50, and the front and rear extension portions 42 of the helmet fixing portion 41 are inserted and fixed to the first fixing portion 55. Then, in step A4, the third support portion 47 is inserted and fixed to the hole-shaped second fixing portion 56. Thus, the corrective helmet 50 in which the pulling direction of the corrector 1 is not easily deviated by the pulling device 20 is completed.

[0073] [3. Effect] (1) If Figure 1 As shown, the above-mentioned correction helmet 50 has a first covering part 51, a second covering part 52, a pair of left and right third covering parts 53, a pair of left and right extension parts 54, and a first fixing part 55. The first covering part 51 covers the front of the head and the left and right sides of the head. The second covering part 52 is extended backward from the first covering part 51 to cover the back of the head. The extension part 54 is extended downward from the part of the first covering part 51 that covers the left and right sides of the head. The third covering part 53 is extended forward from the extension part 54 along the zygomatic arch to cover the vicinity of the zygomatic body. The first fixing part 55 is provided on the first covering part 51, and the tractor 20 is fixed to the first fixing part 55.

[0074] This structure can improve the stability of the wearing state of the correction helmet 50 on the head. In addition, by providing the first fixing portion 55 on the correction helmet 50, the retractor 20 (helmet fixing portion 41) can be firmly fixed to the correction helmet 50. Therefore, the deviation of the pulling direction of the corrector 1 caused by the retractor 20 can be suppressed, and the correction effect of the jaw and the dentition can be improved.

[0075] In addition, regarding the displacement of the correction helmet 50 caused by external force, the head device in the existing RAMPA (registered trademark) device such as the device described in Japanese Patent No. 4058105 is displaced in the pitch direction ( Figure 6 When the head device is rotated (counterclockwise in the side view shown), the position of the jaw cap supporting the jaw may be greatly offset. As a result, the overall shape of the head device is easily distorted, and it is difficult to suppress the deviation of the traction direction of the corrector caused by the traction device 20.

[0076] In contrast, in the above-mentioned corrective helmet 50, the rear end of the helmet fixing part 41 is fixed to the first covering part 51. Therefore, even if the corrective helmet 50 is rotated in the pitch direction around the front head due to external force, the position deviation of the retractor 20 is small. As a result, compared with the existing head device, the deviation of the pulling direction of the corrector 1 caused by the retractor 20 can be suppressed, and the correction effect of the jaw and the dentition can be improved.

[0077] In addition, in the above-mentioned correction helmet 50, the first covering part 51, the second covering part 52, the pair of left and right third covering parts 53, and the pair of left and right extension parts 54 are integrally formed of synthetic resin, so the overall shape of the above-mentioned correction helmet 50 is not easily distorted compared to a head device composed of a wire frame. Therefore, compared with the existing head device, the deviation of the pulling direction of the corrector 1 caused by the puller 20 can be suppressed, and the correction effect of the jaw and the dentition can be improved.

[0078] (2) If Figure 1 As shown in FIG. 1 , the first fixing portion 55 of the present embodiment is disposed near the left and right temples (near the portion corresponding to the temples) in the first covering portion 51. With this structure, the retractor 20 can be firmly fixed to the corrective helmet 50 without obstructing the field of vision of the person wearing the corrective helmet 50. Therefore, the correction effect of the jaw and the dentition can be improved.

[0079] (3) In the present embodiment, a sponge-like inner pad 57 that elastically contacts the head is mounted on the inner side surfaces of the first cover portion 51 and the second cover portion 52. With this structure, the fit of the first cover portion 51 and the second cover portion 52 to the head can be improved, and the stability of the wearing state of the corrective helmet 50 can be improved.

[0080] (4) The third cover portion 53 of the present embodiment is provided with a cheek pad 58 that elastically contacts the skin near the zygomatic body. With this structure, the fit of the third cover portion 53 to the skin near the zygomatic body can be improved, and the stability of the wearing state of the corrective helmet 50 can be improved. In addition, the structure supporting the vicinity of the zygomatic body is less likely to hinder the movement of the jaw and mouth than the structure supporting the mandible, so there is an advantage that it is less likely to cause discomfort when talking or eating.

[0081] (5) If Figure 2 As shown in (A) in FIG. 1 , the second covering portion 52 may be extended backward from the portion of the first covering portion 51 that covers the left and right sides of the head. In this case, by providing a gap 61 between the left and right back head covering portions, the left and right back head covering portions are facilitated to move relative to each other and to elastically deform. Therefore, the wearing and removing properties and the wearing feeling of the correction helmet 50 can be further improved.

[0082] In addition, if Figure 8 As shown in (A) in FIG. 1 , the left rear head covering part and the right rear head covering part can be connected by the belt part 63. In this case, the position deviation of the corrective helmet 50 relative to the head can be effectively suppressed, and the stability of the wearing state of the corrective helmet 50 can be improved. For example, even when lying on a sofa or a bed while wearing the corrective helmet 50, the position of the corrective helmet 50 can be prevented from being easily deviated relative to the head.

[0083] (6) Figure 2 As shown in (B) in the figure, the second covering portion 52 may be extended backward from the portion of the first covering portion 51 that covers the front of the head. In this case, by providing a slit portion 62 between the portion of the first covering portion 51 that covers the left and right sides of the head and the second covering portion 52, the relative movement and elastic deformation of the first covering portion 51 and the second covering portion 52 are facilitated. Therefore, the wearing and removing properties and the wearing feeling of the correction helmet 50 can be further improved. In addition, as Figure 8 As shown in (B) in FIG. 1 , the first covering portion 51 and the second covering portion 52 are connected by a belt member 63. This can effectively suppress positional deviation of the corrective helmet 50 relative to the head, and improve the stability of the wearing state of the corrective helmet 50.

[0084] (7) In this embodiment, the second fixing portion 56 for supporting the pulled portion 21 connected to the orthodontic appliance 1 and extending outside the oral cavity is provided on the first covering portion 51 or the extending portion 54. Figure 6In the side view shown, a counterclockwise moment can be generated in the mounting portion 22 of the pulled portion 21 and the mounting metal member 12, and the direction of the pressing force applied to the maxilla from the orthotic device 1 can be optimized. Therefore, the correction effect of the jaw and dentition can be improved.

[0085] [4. Others] The above embodiments are merely examples and do not mean that various modifications and technical applications not explicitly described in the present embodiment are excluded. The various structures of the present embodiment can be implemented by various modifications within the scope of the present invention. In addition, the various structures of the present embodiment can be selected and chosen as needed, or can be appropriately combined.

[0086] The inner pad 57, cheek pad 58, gap 61, slit portion 62 and other components of the corrective helmet 50 of the embodiment can be omitted. The corrective helmet 50 only needs to have the first covering portion 51, the second covering portion 52, the third covering portion 53, the extension portion 54, and the first fixing portion 55. With this structure, the deviation of the pulling direction of the corrector 1 caused by the traction device 20 can be suppressed, and the same effect as the above-mentioned embodiment can be achieved. In addition, considering the stability and fit when wearing the corrective helmet 50, only a part of the inner pad 57 can be used, and the thickness, softness, and shape of the inner pad 57 and cheek pad 58 can be appropriately adjusted.

[0087] In addition, in the above-mentioned embodiment, the structure in which the first fixing part 55 is arranged near the left and right temples in the first covering part 51 is shown, but the number of positions of the first fixing part 55 can be changed. Fig. 9 As shown in (A) in FIG. 1 , the first fixing portion 55 may be provided at four positions of the first covering portion 51. By increasing the number of fixing positions of the retractor 20, the shape stability and rigidity of the retractor 20 can be improved, thereby improving the correction effect of the jaw and dentition.

[0088] Or, if Fig. 9 As shown in (B) in the figure, the first fixing portion 55 can be provided at one position of the first covering portion 51. In this case, the first fixing portion 55 can be arranged near the center of the forehead in the first covering portion 51. By reducing the number of fixing positions of the traction device 20, the structure of the corrective helmet 50 can be simplified, and the cost and time required for manufacturing can be reduced. In addition, by setting the position of the first fixing portion 55 at the center of the forehead, the field of vision of the person wearing the corrective helmet 50 can be guaranteed to a certain extent. In addition, in consideration of ensuring the field of vision, the helmet fixing portion 41 can also be formed using a transparent resin material, for example, for a part.

[0089] (Industrial Applicability) The present invention can be used in the manufacturing industry of correction helmets and jaw correction devices used in the fields of orthodontics and oral and maxillofacial development and treatment.

[0090] (Explanation of Reference Numerals) 1: Orthotic device; 2: Sliding parts; 3: Press plate; 4: Adjustment unit; 5: Guide hole; 6: Guide component; 7: Guide pin; 8: Sales tube; 9: triangular part; 10: Beads Department; 11: Sliding plate; 12: Metal parts for installation; 13: stopper; 14: curved surface; 15: Chimeric part; 20: tractor; 21: traction part; 22: Installation department; 23: anterior extension; 24: first stopper; 25: second stopper; 26: bending part; 27: third stopper; 30: movable unit; 31: movable tube; 32: movable pin; 40: elastic component; 40a: a first elastic member; 40b: second elastic member; 40c: third elastic member; 41: Helmet fixing part; 42: front and rear extensions; 43: left and right extensions; 44: extension; 45: First support part; 46: Second support unit; 47: Third support department; 48: fixing screw; 50: Corrective helmet; 51: first covering portion; 52: second covering portion; 53: third covering portion; 54: Extension Department; 55: first fixing portion; 56: second fixing portion; 57: Inner pad; 58: Cheek pads; 61: gap; 62: Gap

Claims

1. A jaw correction device, characterized in that: have: The braces, which are installed in the upper jaw inside the mouth; a traction device that pulls the orthosis forward and upward; and a corrective helmet, which is worn on the head of a person using the corrector, and the traction device is fixed to the corrective helmet, The traction device comprises a traction portion connected to the corrector and extending outside the oral cavity and a helmet fixing portion fixed to the corrective helmet. The corrective helmet comprises: a first covering portion that covers the front and left and right sides of the head; a second covering portion extending rearward from the first covering portion and covering the back of the head; A pair of left and right extension portions extending downward from the portion of the first covering portion that covers the left and right heads; a pair of left and right third covering parts, which extend forward from the extending part along the zygomatic arch part and cover the vicinity of the zygomatic body part; and a first fixing portion, which is arranged on the first covering portion, and the helmet fixing portion is fixed to the first fixing portion, The towed portion comprises: A first stopper is provided at the front end of the front extension portion extending from the inside of the oral cavity to the outside of the oral cavity, and is urged upward by a first elastic component installed between the first stopper and the helmet fixing portion; A second stopper, which is arranged at the front end of the front extension portion and is urged forward by a second elastic component installed between the second stopper and the helmet fixing portion; as well as The third stopper is provided at the rear end of the curved portion extending from the front end of the front extension portion toward the vicinity of the auricle portion, and is biased upward by a third elastic member installed between the third stopper and the corrective helmet.

2. The jaw correction device according to claim 1, characterized in that: The first fixing portion is disposed near the center of the forehead or near the temple in the first covering portion.

3. The jaw correction device according to claim 1, characterized in that: A sponge-like inner pad is provided on each inner side surface of the first covering portion and the second covering portion and elastically contacts the head.

4. The jaw correction device according to claim 1, characterized in that: A cheek pad is provided on the third covering portion and elastically contacts the skin near the zygomatic body portion.

5. The jaw correction device according to claim 1, characterized in that: The second covering portion includes a left occipital covering portion extending rearward from the left side of the head and a right occipital covering portion extending rearward from the right side of the head, and a gap is formed between the left occipital covering portion and the right occipital covering portion in a rear view.

6. The jaw correction device according to claim 5, characterized in that: A belt member is provided to connect the left occipital head covering portion and the right occipital head covering portion.

7. The jaw correction device according to claim 1, characterized in that: A slit portion is provided to separate the second covering portion from the portion of the first covering portion that covers the left and right head parts in the horizontal direction.

8. The jaw correction device according to claim 7, characterized in that: A belt member is provided to connect the portions covering the left and right sides of the head and the second covering portion.

9. The jaw correction device according to claim 1, characterized in that: The corrector has: A pair of sliding members, which are respectively mounted on the right and left sides of the maxillary dentition and are respectively formed with guide holes; an adjusting unit, which is disposed between the pair of sliding components and adjusts the distance between the sliding components; A guide pin slidably inserted into each of the guide holes; as well as A pressing plate is connected to the guide pin and moves forward and upward as the distance between the sliding members adjusted by the adjustment unit increases, thereby pressing the upper jaw.

10. The jaw correction device according to claim 1, characterized in that: A second fixing portion is provided on the first covering portion or the extending portion and is used to support the pulled portion.

11. The jaw correction device according to claim 1, characterized in that: The third covering portion is formed in a curved shape along the cheekbone.

12. A method for manufacturing a jaw correction device, which is a method for manufacturing the jaw correction device according to claim 1, characterized in that: Using a three-dimensional scanner to obtain the three-dimensional shape information of the head, Based on the information of the three-dimensional shape obtained by the three-dimensional scanner, the corrective helmet having the first covering part, the second covering part, the pair of left and right third covering parts and the pair of left and right extension parts and having an internal shape corresponding to the three-dimensional shape is formed using a 3D printer, A traction device is formed having a traction portion connected to the upper jaw corrector installed in the oral cavity and extending outside the oral cavity and a helmet fixing portion fixed to the correction helmet, fixing the helmet fixing part to the first covering part in the corrective helmet, The first elastic member for applying upward force to the pulled part is installed between the first stopper portion at the front end of the front extension portion of the pulled part and the helmet fixing portion. The second elastic member for applying a forward force to the pulled part is installed between the second stopper provided at the front end of the front extension part of the pulled part and the helmet fixing part. The third elastic member for applying an upward force to the pulled portion is mounted between the third locking portion provided at the rear end of the curved portion of the pulled portion and the corrective helmet.

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