WO2018139690A1

WO2018139690A1 - Palatal expander

Info

Publication number: WO2018139690A1
Application number: PCT/KR2017/000868
Authority: WO
Inventors: 김성훈; 안효원; 김혜웅; 권태훈
Original assignee: 경희대학교 산학협력단
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2018-08-02

Abstract

The present invention discloses a palatal expander capable of expanding the palate by exceeding maximum expansion width allowed by an expansion screw. The palatal expander, according to the present invention, comprises: a left-side body capable of adjusting width in the right and left directions; a right-side body provided at the right side of the left-side body and capable of adjusting width in the right and left directions; and a first expansion screw for connecting the left-side body and the right-side body and adjusting the right and left space between the left-side body and the right-side body. According to the present invention, it is possible to solve the problems such as the inconvenience of fabricating a plurality of palatal expanders having an extension screw with a different length, respectively, and sequentially applying replacement so as to expand upper palate having a narrow width and the increase of treatment costs, and adjusting for expansion width having left and right asymmetry is also possible. Therefore, when rapid palate expansion is required, sufficient palate expansion as required can be achieved without any additional fabrication or replacement treatment of the palate expander.

Description

Archery expansion unit

The present invention relates to an arch expansion device used to widen the left and right width of the maxillary arch, and more particularly, to an arch expansion device which can maximize the arch expansion width and further, the left and right asymmetrical expansion distance can be adjusted.

In general, the jawbone of a normal person is composed of the maxilla and the mandible, and the upper and lower teeth are arranged in the upper and lower jaw, respectively, and the upper teeth and the lower teeth are engaged by the jaw joint movement to perform the chewing action of the food.

When the malocclusion occurs due to anatomical structures, such as the size and shape of the maxilla and the mandible, more specifically, the width of the maxilla is abnormally narrow, such as when the maxilla is less developed than the mandible, resulting in facial asymmetry or malocclusion. In this case, a procedure to expand the width of the maxilla, ie, the expansion of the arch, is performed.

The arch expansion device used for the expansion of the arch is an apparatus that expands the width of the maxilla by applying a lateral expansion force to the maxilla. The bones on the face are like a puzzle, making it easier to move the bones during the growing phase. More specifically, the palatal bone is divided into left and right with respect to the palatal suture, and the maxilla is large enough to accommodate permanent teeth. In case of small or other narrow maxilla, it is possible to widen the palate itself by spreading the palate or palate to the left and right.

1 is a view showing a conventional arch expansion device. Conventional arch expansion device, the main body 10 that can be extended to the left and right, the arm (20; Arm) fixed to both sides of the main body 10, and the expansion screw 30 for adjusting the width of the main body 10 And, the expansion guide 40 for guiding the expansion of the main body 10, a key hole 50 formed in the expansion screw 30, and the arm 20 is provided in each of the teeth (B) And a fixing part 60 fixed to the upper part and a hook 70 fixed to the upper jaw by a mini screw. A key for rotation is selectively inserted into the key hole 50 to rotate the expansion screw 30.

Therefore, when the operator inserts the rotation key into the key hole 50 and rotates the expansion screw 30, the main body 1 is extended to the left and right sides while applying the expansion force to the left and right teeth B, and to the main body The expansion force expressed by is transmitted to the maxilla through the left and right teeth, thereby realizing the expansion of the arch.

However, when the maxillary arch is very narrow below a predetermined width, it is difficult to install the arch of the palate, namely the palate, having an expansion screw of a length sufficient to obtain a desired amount of expansion. In other words, the width of the expansion screw installable to the palate is limited by the initial width of the maxillary arch.

Therefore, conventionally, the use of an arch expansion device having a small extension screw in accordance with the width of the maxillary arch first, followed by the replacement of a new arch expansion device with an extension screw of a larger length to obtain further expansion of the primary extended arch As this is required, the burden on the cost of treatment increases, and the burden and pain for the treatment is accompanied from the position of the patient undergoing orthodontic treatment, and the hassle of additional manufacture and procedure of the villain expansion device occurs, and eventually the orthodontic treatment process This becomes complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for expanding the arch, which can expand the arch, i.e., the maxillary, from side to side, exceeding the maximum expansion width of the arch.

More specifically, the object of the present invention is to solve the problem of the hassle and the increase in the procedure cost to manufacture a plurality of arch expansion devices each having an extension screw having a different length for the expansion of the narrow upper arch It is to provide a arch expansion device that can be eliminated, and the adjustment of the asymmetrical expansion width.

One embodiment of the present invention includes: a left body width adjustable in the left and right directions; A right body provided at a right side of the left body and having a width adjustable in a left and right direction; And a first expansion screw connecting the left body and the right body to adjust the left and right spacing between the left body and the right body.

The left body may include a first base body provided at a left side of the right body, a left wing provided at a left side of the first base body, and a left and right gap between the first base body and the left wing. It may be configured to include a second expansion screw to adjust.

The right body includes a second base body provided on the right side of the first base body, a right wing provided on the right side of the second base body, the second base body and the right wing. It may be configured to include a third expansion screw for adjusting the left and right spacing between. Thus, the arch expansion device may be implemented as a device including a triple screw system.

The first expansion screw is provided in the horizontal direction through the left body and the right body; The second expansion screw is provided in parallel with the first expansion screw through the left body; The third expansion screw is provided in parallel with the first expansion screw through the right body.

The left wing has a first through hole into which a left side of the first expansion screw is retractably inserted; The right wing has a second through hole into which the right side of the first expansion screw is retractably inserted.

The archery expansion device is; It is provided in a left and right direction through the left body and the right body, and may further comprise a first extension guide for guiding the left body and the right body movement during the rotation of the first expansion screw.

And, the archery expansion device; It is provided in the left and right direction through the left body, the second expansion guide for guiding the expansion of the left body when the second expansion screw is rotated, provided in the left and right direction through the right body, the third It may further comprise a; third extension guide for guiding the expansion of the right body when the expansion screw is rotated.

In order to transfer the expansion force generated by the left body and the right body to the maxilla, the left body and the right body is provided with a push member that can be fixed to the palate or teeth, respectively.

The push member may be configured to include an arm provided at each of a left portion of the left body and a right portion of the right body. The arm may be fixed to the maxilla or fixed to a tooth by a mini screw placed in the maxilla.

The first expansion screw, the second expansion screw, and the third expansion screw are each provided with a tool hole, that is, a key hole so that a rotational tool, for example, a rotation key is fitted.

The arch expansion device according to the present invention has the following effects.

According to the present invention, it is possible to solve the problem of the hassle and the increase in the procedure cost, which must be sequentially replaced by making a plurality of arch expansion devices each having an extension screw having a different length for the expansion of the narrow width of the maxillary arch, It is also possible to adjust the asymmetrical extension width. Thus, if rapid palatal expansion is required, sufficient palatal expansion can be achieved without additional fabrication or replacement of the arch expansion device.

That is, the arch expansion device of the present invention, by the expansion unit having a triple screw system, can implement a palatal expansion, that is, wider maxillary arch expansion than one conventional in one device, unlike the existing expansion further expansion due to lack of expansion The hassle of creating a new arch expansion device and replacing the new arch expansion device in the oral cavity and the burden on the cost of treatment received from a patient undergoing orthodontic treatment can be significantly reduced.

In addition, according to the present invention, when the left and right asymmetrical expansion is required as needed, it is possible to adjust the palate expansion asymmetrically using the second expansion screw and / or the third expansion screw, the left and right symmetrical expansion Compared to the existing arch expansion device, which was only possible, more versatile and effective palatal expansion control is possible.

That is, as more various and effective palatal dilatation control is possible than before, the orthodontic treatment effect can be further increased, and patient satisfaction and reliability can be improved.

The features and advantages of the present invention may be better understood with reference to the following drawings in conjunction with the following detailed description of embodiments of the invention, of which:

1 is a view showing an example of a conventional archery device;

2 is a view showing an example in which an embodiment of the arch expansion device according to the present invention is applied to the maxillary (palate) of the patient;

3 is a front view of a triple screw system for arch expansion as an example of an expansion unit for the arch expansion device according to the present invention;

4 is a cross-sectional view of FIG. 3;

5 shows the initial state before the arch expansion and the left and right expansion by the first expansion screw; And

6 shows the expansion of the left body by the second expansion screw and the expansion of the right body by the third expansion screw;

Hereinafter, preferred embodiments of the present invention, in which the object of the present invention can be specifically realized, are described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted below.

Figure 2 is a view showing an embodiment of the arch expansion device according to the present invention is applied to the maxillary (palate) of the patient, Figure 3 is an example of the expansion unit for the arch expansion device according to the invention triple triple 4 is a front view of the screw system, and FIG. 4 is a sectional view of FIG. 5 and 6 are views illustrating the operation of the arch expansion apparatus according to an embodiment of the present invention.

2 to 6, the arch expansion device according to an embodiment of the present invention is provided with an expansion unit (TSC), for example triple screw system (Triple Screw System) is adjustable width, It is configured to include a push member (200).

More specifically, the arch expansion device according to an embodiment of the present invention in particular the expansion unit, the left body 100a adjustable width in the left and right direction, the right body 100b is adjustable width in the left and right direction, It is configured to include an expansion screw 300 for adjusting the left and right spacing between the left body (100a) and the right body (100b).

The right body 100b is provided on the right side of the left body 100a, and the expansion unit 300 opens the gap between the left body 100a and the right body 100b by the expansion screw 300. ) Can be implemented.

In the present embodiment, the left body 100a and the right body 100b are disposed symmetrically with each other. In addition, the expansion screw 300 is provided to penetrate the left body (100a) and the right body (100b) long in the horizontal direction.

In other words, the expansion screw 300 connects the left body 100a and the right body 100b. More specifically, the left side of the expansion screw 300 is fastened to the left body 100a through the left body 100a, and the right side of the expansion screw 300 passes through the right body 100b. It is fastened to the right body 100b. The left side and the right side of the expansion screw 300 is formed with a male screw having a different spiral direction.

Hereinafter, for convenience of description, the expansion screw 300 that adjusts the left and right spacing between the left body 100a and the right body 100b is referred to as a first expansion screw.

The left body 100a includes a first base body 101a provided on the left side of the right body 100b and a left wing 102a provided on the left side of the first base body 101a. It may be configured to include a second expansion screw (300a) for adjusting the left and right spacing between the first base body (101a) and the left wing (101b).

The right body 100b includes a second base body 101b provided on the right side of the first base body 101a and a right wing 102b provided on the right side of the second base body 101b; Right Wing), and the third expansion screw 300b for adjusting the left and right spacing between the second base body 101b and the right wing 102b.

Therefore, the expansion device of the arch expansion device according to the present embodiment is implemented as a device including a triple screw system.

In the present embodiment, the first expansion screw 300 is provided in the left and right direction through the left body 100a and the right body 100b. In addition, the second expansion screw 300a penetrates the left body 100a and is provided side by side to the first expansion screw 300, and the third expansion screw 300b connects the right body 100b. It penetrates and is provided in parallel with the first expansion screw 300.

In this case, a tool hole, that is, a key hole, is inserted into the first expansion screw 300, the second expansion screw 300a, and the third expansion screw 300b so that a rotational tool, for example, a rotational key, is fitted. 500, 500a and 500b are provided, respectively.

On the other hand, the left wing 102a has a first through hole 150a into which the left side portion of the first expansion screw 300 is retractably inserted. In addition, the right wing 102b has a second through hole 150b into which the right side portion of the first expansion screw 300 is retractably inserted.

In other words, the first through hole 150a penetrates the left wing 102a in a left and right direction, and a left side portion of the first expansion screw 300 extends in the axial direction in the first through hole 150a. Slidably inserted.

In addition, the second through hole 150b penetrates the right wing 102b in a left and right direction, and a right side portion of the first expansion screw 300 slides in the axial direction through the second through hole 150b. Possibly inserted.

In addition, the expansion unit TSC may include a first extension guide 400 extending through the left body 100a and the right body 100b in a horizontal direction. The first extension guide 400 guides the stable movement of the left body 100a and the right body 100b when the first expansion screw 300 rotates.

In addition, the expansion unit TSC may further include a second expansion guide 400a penetrating the left body 100a and a third expansion guide 400b penetrating the right body 100b. . The second extension guide 400a and the third extension guide 400b are installed in parallel with the first extension guide 400.

The second expansion guide 400a penetrates the left body 100a and is provided in a left and right direction, and guides the expansion of the left body 100a when the second expansion screw 300a is rotated. More specifically, the second extension guide 400a realizes parallel movement of the left wing 102a in the left and right directions with respect to the first base body 101a.

Next, the third extension guide 400b is provided in the left and right direction through the right body 100b and guides the expansion of the right body 100b when the third expansion screw 300b is rotated. . More specifically, the third extension guide 400b implements parallel movement of the right wing 102b in the left and right direction with respect to the second base body 101b.

In the present embodiment, the second extension guide 400a is provided on the opposite side of the first extension guide 400 based on the first expansion screw 300, and the third extension guide 400b is formed on the first extension guide 400b. 2 is provided coaxially with the extension guide 400a, but the positions of the first to third extension guides are not limited thereto.

On the other hand, since the arch expansion device is applied to the oral cavity, not only the overall size but also the size of each component is very small.

Accordingly, the diameters of the first expansion screw 300, the second expansion screw 300a, and the third expansion screw 300b are also very small. Therefore, the

key hole

500, 500a, 500b of the size that can be sustained without being broken while receiving sufficient rotational force through a rotation control tool, that is, a key (not shown) that is selectively coupled for the rotation of each expansion screw It is not easy to form the

key holes

500, 500a, and 500b in the first to third expansion screws 300, 300a, and 300b.

Therefore,

expansion portions

520, 520a and 520b larger than the diameter of each expansion screw are formed in the center of each of the first to third expansion screws 300, 300a and 300b, and the

expansion portions

520, 520a and 520b. It is preferable to form a plurality of

key holes

500, 500a, 500b at regular intervals along the circumferential direction.

The first expansion screw 300, the second expansion screw 300a, and the third expansion screw 300b have different directions on the left and right sides of each of the

expansion parts

520, 520a, and 520b. The threads of, i.e., left and right threads are formed.

Therefore, for the primary expansion by the first expansion screw 300, by inserting a rotating key in the key hole 500 of the first expansion screw 300 and turning the first expansion screw 300, The left body 100a and the right body 100b simultaneously move to the left and the right while being guided by the rod-shaped first extension guide 400.

In addition, when the second expansion screw 300a is rotated by using the key hole 500a of the second expansion screw 300a for further expansion of the arch by the second expansion screw 300a, the first With the base body 101a fixed, the left wing 102a moves to the left side while being guided by the rod-shaped second extension guide 400a, and as a result, the left body 100a opens to the left and right. .

The third expansion screw 300b also operates on the same principle as the second expansion screw, and uses the key hole 500b provided in the third expansion screw 300b to connect the third expansion screw 300b. When turned, the right wing 102b moves to the right while being guided by the rod-shaped third extension guide 400b while the second base body 101b is fixed, and as a result, the right body 100b. ) Spreads from side to side.

On the other hand, the left body (100a) and the right body (100b) is provided with a first screw hole 130 for screwing the first expansion screw 300, respectively, the left body (100a) has a second expansion screw ( A second screw hole 130a to which the 300a is screwed is additionally formed, and a third screw hole 130b to which the third expansion screw 300b is screwed is further formed on the right body 100b. More specifically, first screw holes 130 having different spiral directions are formed in the first base body 101a and the second base body 101b.

In addition, a first guide hole 140 through which the first extension guide 400 is installed is formed in the left body 100a and the right body 100b, and a second extension guide (in the left body 100a). A second guide hole 140a through which 400a is installed is further formed, and a third guide hole 140b through which the third extension guide 400b is installed is further formed in the right body 100b. .

Referring to FIGS. 3 and 4, the left wing 102a has a left side portion of the first expansion screw 300 so that the width of the left body 100a can be adjusted by the second expansion screw 300a. A through hole, ie, a first through hole 150a, is formed to be inserted (retracted / retracted) in a possible manner.

In addition, the through hole in which the right side portion of the first expansion screw 300 is retractably inserted into the right wing 102b so that the width of the right body 100b can be adjusted by the third expansion screw 300b. That is, the second through hole 150b is formed.

In the present embodiment, as shown in Figs. 3 and 4, the left side of the first expansion screw 300 is inserted into the first through-hole 150a of the left wing (102a), for example, is slidably inserted. The right side of the first expansion screw 300 is inserted into the second through hole 150b of the right wing 102b so as to slide forward and backward, for example. For example, the first through hole 150a and the second through hole 150b are non-threaded holes in which the left side and the right side of the first expansion screw 300 are loosely inserted and have no female thread. It can be made of a flat pattern hole.

In order to transfer the expansion force generated by the left body 100a and the right body 100b to the maxilla, the left body 100a and the right body 100b are pushed to the palate (palate) or the teeth, respectively. The member 200 is provided.

The push member 200, as in the present embodiment, includes an arm (Arm) provided in the left portion of the left body, that is, the left wing (102a) and the right portion of the right body, that is, the right wing (102b), respectively Can be configured. The arm may be fixed to the maxilla by a mini screw (S) implanted in the maxilla as shown in FIG. 2, or may be fixed to a tooth as in the example shown in FIG. 1.

The action of the arch expansion device having the expansion unit TSC described above, that is, the triple screw system TSC as in the present embodiment is as follows.

The arch expansion device described in this embodiment expands through a plurality of steps for the narrow and narrowed maxillary arch where palatal expansion is required.

First, Figure 5 (A) is the initial state before the expansion of the arch, the palatal expansion is not made.

Referring to FIG. 5B, after installing the arch expansion device on the palate, the operator inserts a rotation operation key (not shown) into the key hole 500 provided in the first expansion screw 300. By rotating to, the first expansion screw 300 can perform the symmetrical expansion of the maxillary arch to the first allowable range.

That is, when the first expansion screw 300 is rotated so that the gap between the left body 100a and the right body 100b is widened, the first expansion guide 400 is the left body 100a and the right body ( It guides the movement of 100b), ie symmetrical parallel movement, and as a result, the primary maxillary arch expansion by the first expansion screw can be performed.

And, as shown in (B) of FIG. 5, if further expansion is required after the arch expansion by the first expansion screw 300, the second expansion screw 300a and / or as shown in Figure 6 Further expansion of the arch may be performed by the third expansion screw 300b.

First, referring to FIG. 6A, in order to further expand the maxillary arch to the left side, a rotation operation key (not shown) is inserted into the key hole 500a provided in the second expansion screw 300a. When the second expansion screw 300a is rotated, the width of the left body 100a is extended while being guided by the second expansion guide 400a.

And, as shown in Figure 6 (B), in order to further expand the maxillary arch to the right, a rotation action key (not shown) in the key hole 500b provided in the third expansion screw (300b) When the third extension screw 300b is inserted to rotate, the width of the right body 100b is expanded by receiving the guide of the third extension guide 400b.

Further expansion of the archery using the left body (100a) and further expansion of the archery using the right body (100b), may be carried out at the same time or at a time difference in consideration of the patient's condition and the treatment environment, etc. In consideration of the state and the like, the amount of expansion using the left body 100a and the amount of expansion using the right body 100b may be different.

That is, according to the present invention, after the expansion of the first step by the first expansion screw 300, it is symmetrical or asymmetrical using the second expansion screw 300a and / or the third expansion screw 300b. Additional archery extensions can be implemented.

Thus, in one embodiment of the present invention, unlike the conventional arch expansion device that was only possible to expand the left and right symmetrical arch, it becomes possible to control a variety of more effective palatal expansion.

According to the present invention, the arch expansion process is performed in two stages of the first and second stages under the premise of performing symmetrical expansion, but the triple screw system (TSC) for expanding the arch of the present invention is asymmetrically expanded left and right. Since it is possible to perform, the arch expansion process may be performed in three stages: the first expansion screw adjustment step which is substantially symmetrical, the second expansion screw adjustment step of the left side, and the third expansion screw adjustment step of the right side.

Therefore, according to the present invention, after the primary palatal expansion, the patient may further expand symmetrically or asymmetrically according to the patient's condition, and may also perform an alternative extension to either of the maxillas of the left and right as needed. Compared to the conventional arch expansion device, which was only symmetrical and can be expanded only in a narrow range, more diverse and effective palatal dilatation control can be achieved, thereby improving orthodontic treatment effect and further improving patient satisfaction and reliability. It can also be raised further.

As described above, in the narrow, narrowed maxillary arch, or palate, where rapid palatal expansion is required, it is difficult to place an expansion screw of sufficient length to achieve the desired extension distance due to spatial constraints, and further expansion due to lack of expansion In order to not only solve the existing cost burden and hassle according to the new manufacturing and operation of the device, but also according to the present invention it is possible to adjust the left and right asymmetrical palate expansion.

As described above, a preferred embodiment according to the present invention has been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof has ordinary skill in the art. It is obvious to them.

Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

The present invention is a medical device used to expand the width of the maxillary bone, that is, the maxilla, according to the present invention can be maximized the width of the arch can be obtained with one arch.

Claims

Left body width adjustable in the left and right directions;

A right body provided at a right side of the left body and having a width adjustable in a left and right direction; And

And a first expansion screw connecting the left body and the right body to adjust the left and right spacing between the left body and the right body.
The method of claim 1,

The left body may include a first base body provided at a left side of the right body, a left wing provided at a left side of the first base body, and a left and right gap between the first base body and the left wing. A second expansion screw to adjust the pressure;

The right body may include a second base body provided at a right side of the first base body, a right wing provided at a right side of the second base body, and between the second base body and the right wing. The arch expansion device comprising a third expansion screw for adjusting the left and right spacing.
The method of claim 2,

The first expansion screw is provided in the left and right direction through the left body and the right body; The second expansion screw is provided in parallel with the first expansion screw through the left body; The third expansion screw, penetrating the right body is provided in parallel with the first expansion screw, the arch expansion device.
The method of claim 3,

The left wing has a first through hole into which a left side of the first expansion screw is retractably inserted;

The right wing, the arch expansion device having a second through hole in which the right side portion of the first expansion screw is retractably inserted.
The method of claim 1,

And a first extension guide penetrating the left body and the right body in a left and right direction and guiding movement of the left body and the right body during rotation of the first expansion screw.
The method according to any one of claims 1 to 5,

A second extension guide penetrating the left body in a left and right direction and guiding expansion of the left body when the second expansion screw is rotated; And

And a third expansion guide provided through the right body in a left and right direction and guiding the expansion of the right body when the third expansion screw is rotated.
The method of claim 1,

In order to transfer the expansion force generated by the left body and the right body to the maxilla, the left body and the right body is provided with a push member that can be fixed to the palate or teeth, respectively.
The method of claim 7, wherein

The push member is an arch expansion device configured to include an arm provided in each of the left portion of the left body and the right portion of the right body.