Head cap type multi-direction adjusting extramaxillary traction tool

Abstract

The invention discloses a head cap type multi-directional adjustment extramaxillary traction tool which comprises a head cap, a traction rod and a traction column, the traction rod is connected with the head cap, and the traction column is connected with the traction rod; by the adoption of the structure, a chin pocket in the prior art is omitted, and the device has the following advantages that the chin continuously bears the pressure of the chin pocket instead of being stressed, pain and discomfort of temporomandibular joints and mandibular angles are avoided, and therefore a patient does not feel uncomfortable even if the patient wears the device every day, and the treatment time span is shortened; the chin is not limited by the chin pocket, so that the wearer can normally speak with an opening when wearing the cap-type external maxillary traction tool; and the structure of the tool is simplified, so that a wearer can eat normally.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of extraoral traction tools, and particularly relates to a head cap type multidirectional adjustment extraoral traction tool. BACKGROUND

[0002] An extraoral traction device is a classic auxiliary treatment tool in the field of orthodontics, and is mainly applied to the treatment of malocclusion caused by the development of the upper and lower jaws. The technical development of the extraoral traction device is derived from the core demand of guiding the growth of the jaw through external force in orthodontic treatment. The extraoral traction device is mainly used for patients in the mixed dentition period or the early permanent dentition period to solve the problem of insufficient development of the upper jaw or Angle Class III malocclusion. The extraoral traction device is fixed on the head by means of an extraoral traction device, a chin cap, a fixed belt and other components, a traction column is hung on the traction device, and an upper jaw appliance is connected to the traction column to apply a traction force forward, thereby guiding the growth of the upper jaw and improving the 'earth covering the sky' facial type.

[0003] The traditional extraoral traction tool has a large volume and a distinct appearance after being worn, which affects the social and aesthetic needs of patients, and the acceptance of adolescent patients is low. Figure 12 The patient needs to wear the device for a long time (usually 12-15 hours, and the longer the time, the better the effect), and the lower jaw is continuously stressed for a long time, which can easily cause pain and discomfort of the temporomandibular joint and the mandibular angle. When wearing the device, the lower jaw is stressed, and it is inconvenient to open the mouth and speak. The device is only suitable for patients with insufficient development of the upper jaw or Angle Class III malocclusion. The structure of the device is complex, and there are components above and below the mouth, which hinder eating. SUMMARY

[0004] The purpose of the present application is to solve one or more of the problems in the background art, and to provide a head cap type multidirectional adjustment extraoral traction tool.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a head cap type multidirectional adjustment extraoral traction tool, comprising a head cap, a traction rod and a traction column, the traction rod is connected with the head cap, and the traction column is connected with the traction rod.

[0006] For the improvement of the present application, the traction column is connected with the traction rod through an adjustment rod.

[0007] For the improvement of the present application, the adjustment rod is connected with the traction rod through a first bolt.

[0008] For the improvement of the present application, the end of the adjustment rod away from the traction column is centered on a first bolt hole and radiates a plurality of grooves, and the end of the traction rod away from the head cap is centered on a first bolt hole and radiates a plurality of protrusions which are in clearance fit with the grooves.

[0009] For the improvement of the present application, the number of protrusions is the same as that of grooves and one-to-one correspondence.

[0010] In an improvement to the present invention, the end of the traction rod away from the head cap radiates outwards from the first bolt hole, with a number of elongated protrusions extending outwards. The distance between any two adjacent elongated protrusions is greater than or equal to the width of one elongated protrusion. The structure of the end of the adjusting rod away from the traction column is the same as the structure of the end of the traction rod away from the head cap.

[0011] In an improvement to the present invention, the traction rod is provided with a first shaft hole at one end near the traction column, the adjusting rod is provided with a second shaft hole, the traction rod is provided with a first arc-shaped through groove at a predetermined distance centered on the first shaft hole, and the adjusting rod is provided with a second arc-shaped through groove at one end near the traction rod centered on the second shaft hole. The distance between the first shaft hole and the first arc-shaped through groove is equal to the distance between the second shaft hole and the second arc-shaped through groove.

[0012] In an improvement to the present invention, the outer side of the headgear is provided with a sliding groove, and the traction rod is inserted into the sliding groove and connected to the headgear.

[0013] In an improvement to the present invention, the slide groove is provided with a first pin hole, and the end of the traction rod away from the adjusting rod is provided with a plurality of second pin holes at predetermined distances.

[0014] In an improvement to the present invention, the traction column is provided with a plurality of annular slots spaced at predetermined intervals.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The chin support in the existing technology has been eliminated, so that the chin (mandible) does not have to bear the pressure of the chin support continuously, thus avoiding pain and discomfort in the temporomandibular joint and mandibular angle. As a result, patients can wear it for longer periods of time each day without discomfort, and the treatment time span is reduced. 2. The chin support in existing technologies is removed, and the chin is not restricted by the chin support, ensuring that the wearer can still speak normally while wearing the cap-type extramaxillary traction device; 3. By eliminating the chin support found in existing technologies, the structure of the tool is simplified, allowing the wearer to eat normally; 4. By eliminating the chin support in existing technologies, the mandible is no longer subjected to pressure from the chin support, thus expanding the treatment range. This tool can be used for maxillary hypoplasia or Angle Class I, II, and III malocclusion problems. If an unmodified external traction device is used for mandibular retrusion (Angle Class II), the pressure on the chin will cause the chin to retrude further. However, by using a cap-type external traction device, an intraoral appliance can be installed on the mandible, and the mandible can be pulled out through traction, thereby improving the mandibular retrusion. 5. The forehead pad in the existing technology is replaced with a larger head cap, which provides better coverage and sufficient support, making it more comfortable for patients to wear; 6. The traction rod is equipped with several pin holes, which can be used to adjust the up and down position of the traction rod so that the traction column is always in front of the mouth, thereby providing more accurate traction force; 7. The traction post is equipped with several annular slots, which can be selected according to the width of the patient's dental arch to install rubber bands, thereby providing accurate traction force. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 2 This is an exploded structural diagram of the first direction of the adjusting rod in Embodiment 1 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 3 yes Figure 2 A magnified structural diagram of point A in the middle; Figure 4 This is an exploded structural diagram of the second direction of the adjusting rod in Embodiment 1 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 5 This is an exploded structural diagram of the first direction of the adjusting rod in Embodiment 2 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 6 This is an exploded structural diagram of the second direction of the adjusting rod in Embodiment 2 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 7 This is a schematic diagram of the first angle adjustment of the adjusting rod in Embodiment 3 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 8 This is a schematic diagram of the second angle adjustment of the adjusting rod in Embodiment 3 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 9 This is a schematic diagram of the third angle adjustment of the adjusting rod in Embodiment 3 of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 10 A side view of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 11 This is a frontal reference diagram of the headgear-type multi-directional adjustable external jaw traction tool of the present invention; Figure 12 This is a schematic diagram illustrating the use of existing technology products. Detailed Implementation

[0017] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0019] like Figures 1 to 11 The illustrated multi-directional adjustable external jaw traction tool includes a headgear 1, a traction rod 2, and a traction column 3. The traction rod 2 is connected to the headgear 1, and the traction column 3 is connected to the traction rod 2. Specifically, the cap 1 can be made of plastic material, with a layer of soft material on the inside of the cap 1 to ensure user comfort. Using plastic material can reduce the weight of the tool and reduce the pressure on the user. The cap 1 has a large hollow structure, which can further reduce the weight of the tool and also has a ventilation effect, further improving wearing comfort.

[0020] Understandably, the headgear 1 can be configured as a curved sheet structure. The headgear 1 has mounting holes on both sides, and each mounting hole has a fixing strap 13. The two fixing straps are connected by an adjusting buckle 14, and the wearing length of the fixing straps is adjusted by adjusting the buckle. It is understood that the fixing straps and adjusting buckles are existing technology, and will not be elaborated upon here. After the user puts on the headgear 1, one end of the traction rod 2 is connected to the headgear 1, and the other end extends to the wearer's chin. Then, a traction rope is prepared. One end of the traction rope is hung on the orthodontic appliance inside the wearer's mouth, and the other end is hung on the traction post 3. It should be noted that the traction rope is generally made of an elastic material, such as a rubber band.

[0021] Preferably, it is understood that different users have different ages, facial features, and degrees of oral deformities. When the traction rod 3 is positioned under the user's chin using only the traction rod 2, the distance between the chin and the traction rod 3 will vary. To ensure that the traction rope provides appropriate traction, it is necessary to adjust the distance between the user's chin and the traction rod 3. The system also includes an adjusting rod 4, through which the traction rod 3 is connected to the traction rod 2. The adjusting rod 4 is used to adjust the distance between the traction rod 3 and the chin, either increasing or decreasing the distance, thus providing a suitable traction force for the user. The adjusting rod 4 is connected to the traction rod 2 via a first bolt.

[0022] For the same reasons as above, different users have different ages, facial features, and degrees of oral deformities. Even when the traction rod 3 is positioned under the user's chin using only the traction rod 2, the distance between the chin and the traction rod 3 varies from user to user. This solution provides an adjustment rod 4, embodiment one, a method for adjusting the distance between the chin and the traction rod 3 for different users; see [link to relevant documentation]. Figures 2 to 4The adjusting rod 4, with the end furthest from the traction rod 3 centered on the first bolt hole, has several grooves radiating outwards (extending in straight lines from the center in all directions). The traction rod 2, with the end furthest from the headgear 1 centered on the first bolt hole, has protrusions radiating outwards that fit with the grooves 41 with clearance. Using this structure, the position of the traction rod 3 is adjusted to the width of at least one protrusion 41. During adjustment, the user loosens the bolt, making the adjusting rod 4 and traction rod 2 separable. The user rotates the traction rod 3 around the first bolt hole. When the traction rod 3 is rotated to the appropriate position, the adjusting rod 4 is then engaged with the traction rod 2, allowing the protrusions 41 to insert into the grooves 21, and the bolt is tightened. This adjustment method is stepped, with each adjustment position being the width of at least one protrusion 41. Although this method is stepped, its advantage is stable adjustment. When the protrusions 41 are inserted into the grooves 21 and the bolts are tightened, the distance between the traction rod 3 and the user's chin... The distance will not change, which is more stable than simply fixing with bolts; while ensuring the strength of the protrusion 41, the more grooves 21 the better. Although this allows for stepped adjustment, it can also maximize the accuracy of the distance between the chin and the traction post 3 for different users; in addition, the number of protrusions 41 can be one or the same as the number of grooves 21. When the number of protrusions 41 is one, special attention needs to be paid to the width of the protrusion 41 to ensure its strength. When the number of protrusions 41 is the same as the number of grooves 21 and they correspond one-to-one, the number of grooves 21 can be set as much as possible; the number of grooves 21 can be selected between 15 and 45, preferably 30, which ensures both the strength of the protrusion 41 and the accuracy of adjustment; it can be understood that in this solution, the grooves 21 are set on the traction rod 2 and the protrusions 41 are set on the adjusting rod 4. It can also be set in reverse, with the grooves 21 set on the adjusting rod 4 and the protrusions 41 set on the traction rod 2.

[0023] For the same reason as above, this solution further provides an embodiment two of adjusting rod 4, a solution for adjusting the distance between the chin and traction column 3 for different users; see [link to embodiment]. Figure 5 and Figure 6 Preferably, the end of the traction rod 2 away from the head cap 1 radiates out with a number of elongated protrusions 22 centered on the first bolt hole, and the distance between any two adjacent elongated protrusions 22 is greater than or equal to the width of one elongated protrusion 22; the structure of the end of the adjusting rod 4 away from the traction column 3 is the same as the structure of the end of the traction rod 2 away from the head cap 1; this scheme is based on the same principle as the previous scheme, both based on the mortise and tenon relationship, only slightly different in structure.

[0024] It should be noted that the distance adjustment between the traction post 3 and the user's chin in the above two embodiments is stepped adjustment. That is, each adjustment is at least the width of one protrusion 41 and one elongated protrusion 22. The more protrusions 41 or elongated protrusions 22 are set, the more precise the distance adjustment between the traction post 3 and the user's chin can be. However, no matter how many protrusions 41 or elongated protrusions 22 are set, stepless adjustment cannot be achieved. In addition, the number of protrusions 41 and elongated protrusions 22 is not set arbitrarily. At least the strength of the protrusions 41 or elongated protrusions 22 must be considered to prevent the width of the protrusions 41 or elongated protrusions 22 from being too narrow and affecting the strength. Therefore, this solution provides an additional embodiment of the adjusting rod 4, see Embodiment 3. Figures 7 to 9 The traction rod 2 has a first shaft hole 23 at one end near the traction column 3, and the adjusting rod 4 has a second shaft hole. The traction rod 2 has a first arc-shaped through groove 24 at a predetermined distance from the first shaft hole 23, and the adjusting rod 4 has a second arc-shaped through groove 42 at one end near the traction rod 2 with the second shaft hole as the center. The distance between the first shaft hole 23 and the first arc-shaped through groove 24 is equal to the distance between the second shaft hole and the second arc-shaped through groove 42.

[0025] The second shaft hole on the adjusting rod 4 is connected to the second shaft hole on the traction rod 2 by a rotating shaft or bolt. The first arc-shaped through groove 24 and the second arc-shaped through groove 42 are connected by bolts. With the rotating shaft as the center, the distance between the user's chin and the traction column 3 is adjusted by the misalignment of the first arc-shaped through groove 24 and the second arc-shaped through groove 42. It should be noted that one of the first arc-shaped through groove 24 and the second arc-shaped through groove 42 does not have to be an arc-shaped through groove; a simple bolt through hole is sufficient. If both are set as arc-shaped through grooves, the adjustable distance between the user's chin and the traction column 3 is larger. If one is set as a bolt through hole, the adjustable distance between the user's chin and the traction column 3 is slightly smaller. In this embodiment, the distance between the traction column 3 and the user's chin can be steplessly adjusted within a certain range through the above mechanism. Although this stepless adjustment can precisely adjust the distance between the traction column 3 and the user's chin, this adjustment method also has the drawback of limited distance adjustment.

[0026] Preferably, it is understood that the distance between the forehead and chin of people of the same age will not be very different, but there is still a difference between teenagers and adults. In order for this tool to be applicable to users of all ages, the outer side of the headgear 1 is provided with a sliding groove 11, and the traction rod 2 is inserted into the sliding groove 11 and connected to the headgear 1; by sliding the traction rod 2 in the sliding groove 11 to a suitable position and then fixing it, the position of the traction column 3 corresponding to the user's chin can be adjusted; the fixing here can be achieved by bolt locking or pin positioning.

[0027] Preferably, this embodiment provides a scheme for fixing the traction rod 2 to the slide 11. The slide 11 is provided with a first pin hole 12, and the end of the traction rod 2 away from the adjusting rod 4 is provided with a plurality of second pin holes 25 at a predetermined distance. It can be understood that the first pin hole 12 on the slide 11 can be one or more. However, considering that there is a difference in the distance between the forehead and chin of teenagers and adults, the multiple second pin holes 25 on the traction rod 2 are sufficient. During adjustment, the user adjusts the traction column 3 to a suitable height, and then aligns the first pin hole 12 with the second pin hole 25 closest to the first pin hole 12. The pin is inserted into the pin hole to position the traction rod 2 and the headgear 1.

[0028] Preferably, the traction post 3 is provided with a plurality of annular slots 31 at predetermined intervals. The appropriate annular slot 31 can be selected according to the width of the user's dental arch to install the elastic band. The other end of the elastic band is installed on the user's intraoral appliance to provide traction force.

[0029] It should be noted that the adjustment rod 4 can be combined with other embodiments, such as embodiment one, two, or three, to achieve the up-and-down adjustment of the traction column 3 and the adjustment of the distance between the traction column 3 and the user's chin, which is perfectly applicable to all age groups and different degrees of oral deformity of different users.

[0030] It should be noted that the headgear 1, traction rod 2, adjusting rod 4 and traction column 3 can all be made of lightweight plastic materials. In addition, the adjusting rod 4 and traction column 3 can also be processed by integral molding, such as plastic injection molding.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A headgear multi-directional adjustment extra-oral distraction tool, characterized in that: The traction rod (2) and the head cap (1) are connected, and the traction column (3) and the traction rod (2) are connected.

2. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 1, wherein: The adjusting rod (4) is connected with the traction rod (2) through the first bolt.

3. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 2, wherein: The adjusting rod (4) is connected with the traction rod (2) through the first bolt.

4. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 3, wherein: The end of the adjusting rod (4) away from the traction column (3) is centered on the first bolt hole and radiates a plurality of grooves (41), and the end of the traction rod (2) away from the head cap (1) is centered on the first bolt hole and radiates a plurality of protrusions (21) matched with the grooves (41).

5. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 4, wherein: The number of the protrusions (41) is the same as that of the grooves (21) and one-to-one corresponding.

6. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 3, wherein: The end of the traction rod (2) away from the head cap (1) is centered on the first bolt hole and radiates a plurality of long strip protrusions (22), and the distance between every two adjacent long strip protrusions (22) is greater than or equal to the width of one long strip protrusion (22); the structure of the end of the adjusting rod (4) away from the traction column (3) is the same as that of the end of the traction rod (2) away from the head cap (1).

7. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 2, wherein: The end of the traction rod (2) close to the traction column (3) is provided with a first shaft hole (23), the adjusting rod (4) is provided with a second shaft hole, the traction rod (2) is provided with a first arc-shaped through slot (24) at a predetermined distance away from the first shaft hole (23), and the end of the adjusting rod (4) close to the traction rod (2) is provided with a second arc-shaped through slot (42) away from the second shaft hole.

8. The headgear-style multi-way adjustable extra-oral traction tool according to claim 4 or 5 or 6 or 7, wherein: The outer side of the head cap (1) is provided with a sliding groove (11), and the traction rod (2) is inserted into the sliding groove (11) to be connected with the head cap (1).

9. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 8, wherein: The sliding groove (11) is provided with a first bolt hole (12), and the end of the traction rod (2) away from the adjusting rod (4) is provided with a plurality of second bolt holes (25) at a predetermined distance.

10. The headgear-style multiplanar adjustable extra-oral traction appliance of claim 9, wherein: The traction column (3) is provided with a plurality of annular clamping grooves (31) at a predetermined distance.

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