Adjustable front traction device

Abstract

The utility model provides an adjustable front traction device, which comprises a head band, a front traction device and a rear traction device, the extraoral traction assembly is connected with the intraoral appliance through an elastic piece; the chin pocket can be fixed with the chin part; the two ends of the turnover supporting assembly are coaxially arranged and connected with the head band and the extraoral traction assembly respectively, and the turnover supporting assembly can turn over towards the inner side and / or the outer side of the face and be locked; one end of the fixed supporting assembly is fixedly connected with the overturning supporting assembly and / or the extraoral traction assembly, and the other end of the fixed supporting assembly is fixedly connected with the chin pocket; due to the fact that the two ends of the overturning supporting assembly are coaxially arranged, stable supporting is still achieved in the overturning process. When a child patient wears the device in the daytime, the overturning supporting assembly can be overturned to the outer side of the face and locked, and the sight is prevented from being affected; when a child patient wears the device during sleeping, the overturning supporting assembly only needs to be overturned to the inner side of the face and locked, long-time wearing is facilitated, and the wearing comfort is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an adjustable front traction device. Background Art

[0002] Skeletal Class III malocclusion (commonly known as: underbite) is a common dentofacial deformity in clinical practice. It has genetic characteristics and a high incidence rate in my country. Severe skeletal Class III malocclusion not only has dental problems, but is also accompanied by abnormalities in the morphology and position of the jaw, which not only affects the facial appearance and oral and maxillary function of the child, but also has adverse effects on the mental health of the child and his parents. Therefore, for skeletal Class III malocclusion in the growth and development period and with insufficient maxillary development, the maxillary anterior traction device (also known as face bow) is often used clinically to utilize the child's own growth potential to promote the growth and development of the maxilla and improve the severity of the dentofacial deformity.

[0003] However, the support rods of the existing front traction device are generally arranged on both sides of the device or in the middle of the device; since the front traction device needs to be worn for 14-16 hours a day, during the wearing process, the front traction device with the support rod located in the middle of the device will have a certain impact on the line of sight and tend to form cross-eyes; the front traction device with the support rods located on both sides of the device often affects the sleep of the child when worn at night, so the wearing comfort is poor; the existing traction device cannot solve the problems that patients encounter when wearing it during the day and at night at the same time, and the size and direction of the traction force of different traction devices need to be readjusted, which increases the difficulty of physician operation and patient wearing. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable front traction device to solve the problem of poor wearing comfort of the traditional front traction device mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable front traction device, comprising: a headband, which can be kept fixed to the forehead; an extraoral traction assembly, which is connected to the intraoral appliance through an elastic member; a chin pocket, which can be kept fixed to the chin; two flip support assemblies, which are distributed on both sides of the central axis of the face, and the two ends of the flip support assembly are coaxially arranged and respectively connected to the headband and the extraoral traction assembly, and the middle sections of the two flip support assemblies are bent in opposite directions, and the flip support assembly can be flipped to the inside and / or outside of the face and locked; a fixed support assembly, one end of which is fixedly connected to the flip support assembly and / or the extraoral traction assembly, and the other end is fixedly connected to the chin pocket.

[0006] Optionally, the two flip support assemblies are symmetrically distributed on both sides of the facial midline.

[0007] Optionally, the flip support assembly includes: a rotating connecting block, which is fixedly connected to the headband; a connecting piece, which is fixedly connected to the extraoral traction assembly and is coaxially arranged with the rotating connecting block; and a flip bracket, whose two ends are respectively rotatably matched with the rotating connecting block and the connecting piece, and the middle section of the flip bracket is bent in a U-shape along the radial direction.

[0008] Optionally, the flip bracket is threadedly connected to the rotating connecting block and the connecting piece respectively, and when the flip bracket is flipped to the outside of the face, the flip bracket is threadedly cooperated with the rotating connecting block and the connecting piece to be locked; a permanent magnet is also provided in the middle section of the flip bracket, and when the flip bracket is flipped to the inside of the face, the flip brackets distributed on both sides of the central axis of the face are magnetically attracted and locked.

[0009] Optionally, a second rotating core is respectively provided at both ends of the flip bracket, and two second rotating cores are movably connected to the inside of the rotating connecting block and the connecting member and have damping.

[0010] Optionally, a second rotating core is respectively provided at both ends of the flip bracket, and the two second rotating cores are respectively movably connected to the inside of the rotating connecting block and the connecting piece; the second rotating core is fixedly connected with a buckle, and the rotating connecting block and the connecting piece are both provided with a slot, and when the flip bracket is flipped to the outside of the face, the buckle is snapped into the inside of the slot; a permanent magnet is also provided in the middle section of the flip bracket, and when the flip bracket is flipped to the inside of the face, the flip bracket distributed on both sides of the central axis of the face is magnetically attracted and locked.

[0011] Optionally, the permanent magnet is disposed inside the flip bracket or is sleeved outside the flip bracket, or the middle section of the flip bracket is a permanent magnet.

[0012] Optionally, the extraoral traction assembly includes: a limiting bracket, whose two ends are respectively fixedly connected to the two connecting members; at least one positioning block, which is fixedly connected to the limiting bracket; and a traction hook corresponding to and fixedly connected to the positioning block one by one, which is connected to the intraoral appliance through an elastic member.

[0013] Optionally, the fixed support assembly includes: two fixed brackets, which correspond to the connecting pieces one by one, one end of each fixed bracket is fixedly connected to the connecting piece, and the other end is bent and extends to the bottom of the chin pocket and is fixedly connected to the chin pocket.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, two flip support components are arranged, which are distributed on both sides of the central axis of the face. The two ends of the flip support components are coaxially arranged and respectively connected to the headband and the extraoral traction component. The bending directions of the middle sections of the two flip support components are opposite, and the flip support components can be flipped and locked to the inside and / or outside of the face; during wearing and use, since the two ends of the flip support components are coaxially arranged, the flip support components still have a stable supporting effect when flipping; and when the child wears the front traction device during the day, the flip support component can be flipped to the outside of the face and locked to avoid affecting the line of sight; when the child wears the front traction device when sleeping at night, it is only necessary to flip the flip support component to the inside of the face and lock it, so as to avoid affecting the sleep of the child when sleeping on the side, making it convenient for the child to wear it for a long time, and greatly improving the wearing comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the front structure of the utility model in the first state.

[0017] Figure 2 It is a schematic diagram of the front structure of the utility model in the second state.

[0018] Figure 3 This is a schematic diagram of the structure of the first state of the flip bracket of the utility model.

[0019] Figure 4 It is a schematic diagram of the structure of the flip bracket of the utility model in the second state.

[0020] In the figure: 1-headband, 2-anti-slip pad, 3-rotating connecting block, 301-slot, 4-flip bracket, 401-permanent magnet, 402-first rotating core, 403-second rotating core, 404-buckle, 5-connector, 6-limiting bracket, 7-positioning block, 8-traction hook, 9-fixed bracket, 10-chin pocket, 11-flexible pad. DETAILED DESCRIPTION

[0021] The scheme of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0024] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0025] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Please refer to Figure 1-Figure 4The utility model discloses an adjustable front traction device, comprising: a headband 1, which can be fixed to the forehead; an extraoral traction assembly, which is connected to the intraoral appliance through an elastic member; a chin pocket 10, which can be fixed to the chin; two flip support assemblies, which are distributed on both sides of the central axis of the face, and the two ends of the flip support assembly are coaxially arranged and respectively connected to the headband 1 and the extraoral traction assembly, the middle sections of the two flip support assemblies are bent in opposite directions, and the flip support assembly can be flipped to the inside and / or outside of the face and locked; a fixed support assembly, one end of which is fixedly connected to the flip support assembly and / or the extraoral traction assembly, and the other end is fixedly connected to the chin pocket 10.

[0028] Specifically, the headband 1, the extraoral traction assembly and the chin pocket 10 are all arranged along a first direction and arranged at intervals along a second direction, and the first direction is perpendicular to the second direction; the headband 1 is curved to fit the forehead surface, and the shape of the chin pocket 10 fits the chin area. The headband 1 and the chin pocket 10 are connected and fixed by the flip support assembly and the fixed support assembly, so as to stably support the extraoral traction assembly on the outside of the child's mouth and pull the intraoral appliance through the elastic member.

[0029] More specifically, in the present application, the first direction is the direction of the line connecting the two eyes or the horizontal direction, the second direction is the direction of the central axis of the face or the vertical direction, and the elastic member is a leather ring, a rubber band or an elastic rope.

[0030] During wearing and use, since the two ends of the flip support assembly are coaxially arranged, the flip support assembly still has a stable supporting effect when flipped; and when the child wears the front traction device during the day, the flip support assembly can be flipped to the outside of the face and locked to avoid affecting the field of vision; when the child wears the front traction device when sleeping at night, it is only necessary to flip the flip support assembly to the inside of the face and lock it, so as to avoid affecting the sleep of the child when sleeping on the side, making it convenient for the child to wear it for a long time, and greatly improving the wearing comfort.

[0031] In one embodiment of the present invention, the two flip support components are symmetrically distributed on both sides of the facial center axis.

[0032] Specifically, when the flip support assembly is flipped toward the inside of the face, its locked state does not interfere with the position of the mouth and nose, and when the flip support assembly is flipped toward the outside of the face, its locked state does not interfere with the position of the face and ears. By arranging the flip support assembly on both sides, good stable support can be provided, and at the same time, the flip support assembly will not affect the use when flipping toward the inside of the face or flipping toward the outside of the face and has good comfort.

[0033] In one embodiment of the utility model, the flip support assembly includes: a rotating connecting block 3, which is fixedly connected to the headband 1; a connecting piece 5, which is fixedly connected to the extraoral traction assembly and is coaxially arranged with the rotating connecting block 3; a flip bracket 4, whose two ends are respectively rotatably matched with the rotating connecting block 3 and the connecting piece 5, and the middle section of the flip bracket 4 is bent in a U-shape along the radial direction.

[0034] Specifically, the flip bracket 4 extends from the rotating connecting block 3 toward the connecting member 5, is radially bent in the middle section of the flip bracket 4, and is bent and extended again in parallel to the initial extension direction, and finally returns to the inside of the connecting member 5. Since the rotating connecting block 3 and the connecting member 5 are coaxially arranged, multiple bendings in the middle section of the flip bracket 4 will not affect the supporting effect, so that it has both flipping and supporting functions.

[0035] It can be understood that the bending angle of the flip bracket 4 each time can be a right angle bend, an acute angle bend or an obtuse angle bend, and the bending surface can be a right angle, a chamfer or a curved surface; as long as the flip bracket 4 does not affect the line of sight when it is flipped toward the inside of the face, and the two flip brackets 4 do not interfere with the mouth and nose when they are abutted together.

[0036] In one embodiment of the utility model, the flip bracket 4 is threadedly connected to the rotating connecting block 3 and the connecting piece 5 respectively. When the flip bracket 4 is flipped to the outside of the face, the flip bracket 4 is threadedly matched and locked with the rotating connecting block 3 and the connecting piece 5. A permanent magnet 401 is also provided in the middle section of the flip bracket 4. When the flip bracket 4 is flipped to the inside of the face, the flip bracket 4 distributed on both sides of the central axis of the face is magnetically attracted and locked.

[0037] Specifically, the flip bracket 4 is flipped toward the outside of the face and locked by threaded cooperation between the first rotating cores 402 at both ends and the rotating connecting block 3 and the connecting piece 5. The flip bracket 4 is flipped toward the inside of the face and locked by magnet attraction. The magnetic poles of the magnets connected to the two flip brackets 4 are opposite, so that the flip bracket is flexible and adjustable. The front traction device is easy to wear and has good comfort.

[0038] In one embodiment of the utility model, the two ends of the flip bracket 4 are respectively provided with second rotating cores 403 , and the two second rotating cores 403 are respectively movably connected to the inside of the rotating connecting block 3 and the connecting member 5 and have damping.

[0039] Specifically, the flip bracket 4 is locked by damping when flipping toward the outside of the face or the inside of the face, so that the flip bracket is flexible and adjustable. The front traction device is easy to wear and has good comfort.

[0040] In one embodiment of the present invention, the permanent magnet 401 is disposed inside the flip bracket 4 or sleeved outside the flip bracket 4 , or the middle section of the flip bracket 4 is the permanent magnet 401 .

[0041] Specifically, the setting form of the permanent magnet 401 and the flip bracket 4 can be selected according to the needs of the user. In the present application, in order to provide a better support and have a magnetic attraction and locking function, the permanent magnet 401 is sleeved on the outside of the flip bracket 4. The permanent magnet 401 can be fixedly sleeved on the outside of the flip bracket 4, or movably sleeved on the outside of the flip bracket 4, so that the flip bracket is flexible and adjustable. The front traction device is easy to wear and has good comfort.

[0042] In one embodiment of the utility model, the extraoral traction assembly includes: a limiting bracket 6, both ends of which are fixedly connected to the two connecting members 5 respectively; at least one positioning block 7, which is fixedly connected to the limiting bracket 6; and a traction hook 8 which corresponds to and is fixedly connected to the positioning block 7 one by one, and is connected to the intraoral appliance through an elastic member.

[0043] Specifically, the limiting bracket 6 is a horizontally arranged supporting frame, which may be a supporting rod or a curved rod, or the middle section of the supporting frame may protrude from both ends, as long as the limiting bracket 6 and the mouth position do not interfere with each other when the front traction device is worn; the front traction device is easy to wear and has good comfort.

[0044] In one embodiment of the utility model, the fixed support assembly includes: two fixed brackets 9, which correspond to the connecting member 5 one by one, one end of the fixed bracket 9 is fixedly connected to the connecting member 5, and the other end is bent and extended to the bottom of the chin pocket 10 and fixedly connected to the chin pocket 10.

[0045] Specifically, the fixing bracket 9 extends from the inside of the connecting member 5 in a vertical direction, and is bent toward the bottom of the chin pocket 10, and is finally fixedly connected to the bottom of the chin pocket 10, and the bending direction of the fixing bracket 9 is inclined close to the face, so that the chin pocket 10 can support the chin area and play a good supporting role.

[0046] In one embodiment of the present invention, the headband 1 is further fixedly connected to a non-slip pad 2; the chin pocket 10 is further fixedly connected to a flexible pad 11.

[0047] Specifically, the anti-slip pad 2 has a good anti-slip effect and can fit the forehead surface well. The flexible pad 11 is comfortable and elastic and can fit the chin well, so that the front traction device is easy to wear and has good comfort.

[0048] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable front traction device, characterized in that: include: A headband (1) capable of being fixed to the forehead; An extraoral traction assembly connected to the intraoral appliance via an elastic member; A chin pocket (10) which can be fixed to the chin; Two flip support components are distributed on both sides of the central axis of the face, the two ends of the flip support components are coaxially arranged and respectively connected to the headband (1) and the extraoral traction component, the middle sections of the two flip support components are bent in opposite directions, and the flip support components can be flipped toward the inside and / or outside of the face and locked; A fixed support component, one end of which is fixedly connected to the flip support component and / or the extraoral traction component, and the other end of which is fixedly connected to the chin pocket (10).

2. The adjustable front traction device according to claim 1, characterized in that: The two flip support components are symmetrically distributed on both sides of the facial center axis.

3. The adjustable front traction device according to claim 2, characterized in that: The flip support assembly comprises: A rotating connecting block (3) which is fixedly connected to the headband (1); A connecting member (5), which is fixedly connected to the extraoral traction assembly and is coaxially arranged with the rotating connecting block (3); The flip bracket (4) has two ends which are respectively rotatably matched with the rotating connection block (3) and the connecting member (5), and the middle section of the flip bracket (4) is bent in a U-shaped shape along the radial direction.

4. The adjustable front traction device according to claim 3, characterized in that: The flip bracket (4) is threadedly connected to the rotating connection block (3) and the connection piece (5) respectively. When the flip bracket (4) is flipped to the outside of the face, the flip bracket (4) is threadedly matched and locked with the rotating connection block (3) and the connection piece (5); A permanent magnet (401) is also provided in the middle section of the flip bracket (4). When the flip bracket (4) is flipped to the inside of the face, the flip brackets (4) distributed on both sides of the central axis of the face are magnetically attracted and locked.

5. The adjustable front traction device according to claim 3, characterized in that: Second rotating cores (403) are respectively provided at both ends of the flip bracket (4), and the two second rotating cores (403) are respectively movably engaged with the inside of the rotating connection block (3) and the connecting member (5) and have damping.

6. The adjustable front traction device according to claim 3, characterized in that: The two ends of the flip bracket (4) are respectively provided with a second rotating core (403), and the two second rotating cores (403) are respectively movably clamped in the inside of the rotating connecting block (3) and the connecting member (5); The second rotating core (403) is fixedly connected with a buckle (404), and a buckle groove (301) is provided inside the rotating connecting block (3) and the connecting member (5), and when the flip bracket (4) is flipped to the outside of the face, the buckle (404) is snapped into the inside of the buckle groove (301); A permanent magnet (401) is also provided in the middle section of the flip bracket (4). When the flip bracket (4) is flipped to the inside of the face, the flip brackets (4) distributed on both sides of the central axis of the face are magnetically attracted and locked.

7. The adjustable front traction device according to claim 4 or 6, characterized in that: The permanent magnet (401) is arranged inside the flip bracket (4) or sleeved outside the flip bracket (4), or the middle section of the flip bracket (4) is the permanent magnet (401).

8. The adjustable front traction device according to claim 3, characterized in that: The extraoral traction assembly comprises: A limiting bracket (6), two ends of which are respectively fixedly connected to the two connecting members (5); At least one positioning block (7) fixedly connected to the limiting bracket (6); A traction hook (8) corresponding one-to-one to and fixedly connected to the positioning block (7) is connected to the intraoral appliance via an elastic member.

9. The adjustable front traction device according to claim 3, characterized in that: The fixed support assembly comprises: Two fixed brackets (9) correspond to the connecting member (5) one by one, one end of the fixed bracket (9) is fixedly connected to the connecting member (5), and the other end is bent and extends to the bottom of the chin pocket (10) and is fixedly connected to the chin pocket (10).

Images