KR101709164B1 - Maxillary Skeletal Expander With Triple expansion screw system - Google Patents

Abstract

The present invention relates to a maxillary expansion device having a triple screw system for rapid palatal expansion. In the case of narrow and constricted maxillary arches requiring rapid palatal expansion, an expansion screw that is large enough to obtain a desired amount of expansion can be hardly positioned and new device preparation and repetition of procedures are required for additional expansion. The present invention is to deal with an increase in cost and hassles attributable to those requirements and allow adjustment of the amount of palatal expansion that is laterally asymmetrical. The present invention includes: a pair of left main bodies; a pair of right main bodies; a first expansion screw having both side portions inserted to penetrate the left main bodies and the right main bodies and adjusting a gap between the left main bodies and the right main bodies; a second expansion screw having both side portions inserted to penetrate the left main bodies and adjusting a gap between the left main bodies; and a third expansion screw having both side portions inserted to penetrate the right main bodies and adjusting a gap between the right main bodies.

Description

Technical Field [0001] The present invention relates to an expandable arch device having a triple screw system for rapid palatal expansion,

The present invention relates to an arch expansion device, and more particularly, to a narrow and narrowed upper arch requiring rapid palatal expansion, it is difficult to arrange an expansion screw having a sufficient size to obtain a desired expansion amount. The present invention relates to a new structure of an arch expansion device that can eliminate the existing cost burdens and hassles associated with the fabrication and operation of a new apparatus, and can also adjust the asymmetric palatal expansion amount.

Generally, a normal human jaw is composed of a maxillary bone and a mandible, an upper tooth and a lower tooth connected to the upper and lower mandibles are formed on the upper and lower sides, respectively, and the upper and lower teeth are meshed with each other according to the jaw joint motion, It consists of a chewable structure.

In the arrangement of the maxillary and mandible, a normal person is formed such that the maxillary bone protrudes forward more than the mandible, but malocclusion occasionally occurs where the maxillary bone is smaller than the mandible and the maxillary and mandible are reversed.

In other words, if the size of the maxillary bone is smaller than the size of the mandible in the anteroposterior direction and the left and right direction when viewed from the side and front of the human face, the malocclusion is regarded as malocclusion. In this case, the maxillary bone is pulled forward, To the right and left.

An arch expansion device used in this orthodontic treatment is a device used for treating a patient whose upper jaw is less developed than a mandible, and is an apparatus for facilitating treatment by extending the maxilla. The bones of the face are like puzzles. It is easy to move the bones during the growing season. The maxilla is also not composed of one bones, and there are several bones. If the upper jaw is small enough to accommodate the permanent teeth, it is possible to widen the arch itself by opening the bone in the center of the mouth.

1 is a view showing a conventional arch expansion device. The conventional arch expansion device is an apparatus fixed to the upper arch A and includes a pair of main bodies 10, an arm 20 fixed to the main body 10, a gap between the pair of main bodies 10 A guide rail 40 for guiding the movement of the main body 10 when adjusting the gap of the main body 10 and an extension screw 30 for adjusting the gap of the main body 10, A key hole 50 for rotating the screw 30 and a fixing part 60 which is engaged with the arm 20 and fixed to the patient's teeth B and a miniscrew, And hooks 70 (hooks) for fixing them to each other.

Such a conventional archery prescription device has a structure in which a key is inserted into the keyhole 50 and the expansion screw 30 is rotated so that the main body 1 moves in the direction of the teeth B on the left and right sides, The gap widens and the arch expansion device expands the fixed maxilla.

However, when the above-described conventional arch expansion device is applied to the extension of the palate, the following problems have been encountered.

In the case of a narrow and narrowed maxillary arch requiring rapid palatal expansion, it is difficult to locate a jackscrew of sufficient size to obtain the desired expansion amount.

Therefore, since a small-sized jackscrew having a limited amount of expansion is used and a new enlarging device using a jackscrew of a larger size is required to obtain an additional expansion amount, The burden on the user is increased.

Further, since it is required to manufacture a new arch expansion device to obtain an additional expansion amount, there is a disadvantage in that it is troublesome to newly manufacture and manipulate the apparatus, and as a result, the correction treatment can not be performed smoothly.

Korean Patent Laid-Open Publication No. 10-2015-0024245 (June 05, 2015) Korean Patent Publication No. 10-2006-0086753 (2006. 08. 01.) Korean Patent Publication No. 10-2011-0091268 (2011. 08. 11.)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide an apparatus and a method for constructing a narrow and narrowed maxillary arch, And it is an object of the present invention to provide an apparatus for expanding an arch of a new structure capable of adjusting an asymmetrical amount of palatal expansion as well as eliminating the cost burden and troubles associated with rework.

In order to achieve the above object, according to the present invention, there is provided a screw system of an arch expansion device in which an interval of a main body fixed to the maxilla is adjusted according to rotation of an extension screw so that the maxilla is expanded, comprising: a pair of left main bodies; A pair of right side bodies; A first extension screw inserted into both the left and right main bodies and the pair of right and left main bodies to adjust left and right gaps between the pair of left and right main bodies; A second extension screw inserted into both the left and right main bodies so as to penetrate the pair of left main bodies to adjust left and right gaps between the pair of left main bodies; And a third extension screw inserted into both the right and left main bodies so as to penetrate through the pair of right main bodies to adjust left and right gaps between the pair of right main bodies. Device is provided. A first through hole is formed in the left side body of the pair of left main bodies so that a left side portion of the first extending screw can be moved forward and backward; A second through hole is formed in the right side body of the pair of right side bodies so that the right side portion of the first expansion screw can be moved forward and backward.

Here, the arch expansion device of the present invention is provided so as to penetrate both the pair of left main bodies and the pair of right main bodies, and as the first expansion screw rotates, the pair of left main bodies and the pair of right main bodies And a first guide rail for symmetrically guiding the movement.

Further, the arch expansion device of the present invention may include a second guide rail installed to penetrate the pair of left main bodies and symmetrically guiding the movement of the pair of left main bodies symmetrically at the time of rotation of the second expansion screw, and; And a third guide rail provided so as to penetrate the pair of right side bodies and symmetrically guide movement of only the pair of right side bodies when the third extension screw rotates.

The first expansion screw, the second expansion screw, and the third expansion screw are provided with key holes for screw rotation, respectively.

On the other hand, an arm coupled to the side of the micro screw (S) to be placed in the maxilla is connected to the pair of left main body and the pair of right main bodies.

The present invention provides the arch expansion device having a triple screw system for rapid palatal expansion, as follows.

According to the present invention, when rapid palatal expansion is required, there is provided an advantage that a desired expansion amount can be obtained without a new manufacture or a procedure of an arch expansion device.

In other words, in the past, when rapid palatal expansion is required, it is difficult to obtain a desired amount of expansion. In order to further expand the device, a device has to be newly fabricated and performed. However, the arch expansion device of the present invention can be manufactured by a triple screw system A larger amount of expansion can be obtained compared with the existing one.

Therefore, according to the present invention, it is possible to manufacture a new arch expansion device for additional expansion due to a lack of expansion amount, and it is troublesome for re-operation and a burden on the treatment cost to be received from a patient receiving orthodontic treatment Thereby providing a remarkably reduced effect.

In addition, according to the present invention, when the asymmetrical extension is required as the need arises, the second extension screw and the third extension screw can be used to adjust the amount of palatal expansion asymmetrically, It is possible to control the palatal expansion amount more effectively and more effectively than the conventional arch expansion device.

In other words, as more and more effective control of the amount of palatal expansion can be made, it is possible to further improve the effect of orthodontic treatment, and to improve the patient's satisfaction with the procedure and the reliability.

1 is a view showing an example of a conventional arch device
Figure 2 is a front view of a triple screw system for an arch expansion device for rapid palatal expansion of the present invention
Figure 3 is a cross-
Figure 4 is a view showing the operation of the triple screw system of the present invention of Figure 2,
4A is a view showing the state before the expansion of the arch,
FIG. 4 (B) is a view showing the expansion of the first stage by the first expansion screw
4 (C) is a view showing the second-stage left expansion by the second expansion screw
Fig. 4 (D) is a view showing the right expansion of the second stage by the third expansion screw
5 is a view showing an example in which the arch expansion device of the present invention is applied to a maxilla of a patient;

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5.

Fig. 2 is a front view of a triple screw system for an arch expansion device for rapid palatal expansion of the present invention, Fig. 3 is a sectional view of Fig. 2, Figs. 4 (a) FIG. 5 is a view showing an example in which the arch expansion device of the present invention is applied to the upper part of a patient. FIG.

Referring to these drawings, the arch expansion device according to the present invention is characterized by having a triple screw system (TSC).

2 to 5, the arch expansion device according to the present invention includes a pair of left main bodies 100a, a pair of right main bodies 100a corresponding to the pair of left main bodies 100a, And a pair of right and left main bodies 100b and 100b which are inserted into the pair of left and right main bodies 100a and 100b so as to pass through the pair of left and right main bodies 100a and 100b, A second expansion screw 300a for adjusting the left and right spacing between the pair of left and right main bodies 100a and 200b by inserting both sides of the left and right main bodies 100a and 100b so as to penetrate the pair of left main bodies 100a, And a third extension screw 300b inserted into the pair of right and left main bodies 100b so as to pass through the right and left main bodies 100b.

The arch expansion device of the present invention is installed to penetrate both the pair of left main body 100a and the pair of right main bodies 100b, and as the first expansion screw 300 rotates, And a first guide rail 400 for guiding movement of both the left main body 100a and the pair of right main bodies 100b.

The arch expansion device of the present invention is installed to penetrate the pair of left main bodies 100a on the opposite side of the first guide rail 400 with respect to the first expansion screw 300, A second guide rail 400a for guiding the movement of the pair of left main bodies 100a when the main body 100a rotates and a third extension screw 300b And a third guide rail 400b for guiding the movement of the pair of right main bodies 100b during rotation of the right main body 100b.

The first expansion screw 300, the second expansion screw 300a, and the third expansion screw 300b are provided with key holes 500, 500a, and 500b for screw rotation, respectively.

On the other hand, since the arch expansion device using miniscrew is applied in the oral cavity, the size of each part is very small as well as the overall size.

Therefore, 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 holes 500, 500a, 500b of a size that can be held without being broken while receiving a sufficient rotational force through a rotary operation key (not shown) coupled to the key holes 500, 500a, The third expansion screw 300, 300a, 300b.

Therefore, the enlarged portion 520 having a diameter larger than the diameter of the screw portion inserted into the pair of left and right main bodies 100a and 100b at the center of each of the first to third expansion screws 300, 300a, 520a and 520b and a plurality of keyholes 500, 500a and 500b are formed on the extensions 520, 520a and 520b at regular intervals along the circumferential direction.

The first expansion screw 300, the second expansion screw 300a and the third expansion screw 300b may have different extensions 520, 520a, and 520b on the left and right sides of the screw, Are formed, that is, the left screw and the right screw are formed.

Therefore, for example, when the screw is turned using the key hole 500 of the first expansion screw 300 when the first step is expanded, the screw is disposed on the left and right sides of the screw about the extension 520 along the screw rotation direction The pair of left main body 100a and the pair of right main bodies 100b can be simultaneously moved in the direction in which the gap between the pair of left main bodies 100a and the pair of right main bodies 100b is guided by the first guide rails 400,

On the other hand, when the screw is rotated using the key hole 500a of the second expansion screw 300a in the left expansion of the second stage, the screw is rotated around the extension 520a in the screw rotation direction The pair of left main bodies 100a are guided by the second guide rails 400a, which are rod-shaped, and spaced apart therebetween.

At this time, of the pair of left main bodies 100a, the right main body remains in place around the extended portion 520a, and the left main body moves so that an interval therebetween is opened.

When the screw is rotated using the keyhole 500b provided in the third expansion screw 300b at the time of right expansion of the second step, the third expansion screw 300b operates on the same principle. When the screw is rotated, The pair of right side bodies 100b disposed on the right and left sides of the screw about the extension 520b are spaced apart from each other while being guided by the rod-like third guide rail 400b.

At this time, of the pair of right-side bodies 100b, the left-side main body stays in place around the extended portion 520b, and the right-side main body moves so that an interval between the two becomes open.

The first extension screw 300 is provided at one side of the pair of left main body 100a and the pair of right main bodies 100b and is provided with a screw installation hole 130 in which the first extension screw 300 is engaged, The main body 100a is provided with a screw installation hole 130a in which a second expansion screw 300a is engaged and a screw installation hole 130b in which a third expansion screw 300b is fitted to the pair of right side bodies 100b. 130b.

A guide hole 140 through which the first guide rail 400 passes is formed on the other side of the pair of the left main body 100a and the pair of right main bodies 100b, A guide hole 140a through which the second guide rail 400a passes is provided in the right side body 100a and a guide hole 140b through which the third guide rail 400b passes is provided in the pair of right side bodies 100b. do.

2 to 4, a pair of left main bodies 100a are provided on the left main body 100a so that the distance between the pair of left main bodies 100a can be adjusted by the second extension screw 300a, A through hole 150a (hereinafter, referred to as a "first through hole") through which the left side portion of the first expansion screw 300 is inserted so as to be advanced or retreated is formed. In addition, the right side body of the pair of right side bodies 100b may be provided with the first expansion screw 300 (see FIG. 1) so that the gap between the pair of right side bodies 100b can be adjusted by the third expansion screw 300b. (Hereinafter, referred to as 'second through hole') through which the right side of the first through-hole 150a is movably inserted. More specifically, with respect to the extension part 520a of the second expansion screw of the pair of left main bodies 100a, a first through-hole 150a through which the first expansion screw 300 passes is formed in the left- A second through hole 150b through which the first expansion screw 300 passes is formed in the right side body with respect to the extension 520b of the third expansion screw among the pair of right side bodies 100b, . 2 and 3, the left side portion of the first expansion screw 300 is moved forward and backward in the first through-hole 150a of the left side body of the pair of left side bodies 100a, for example, The right side portion of the first expansion screw 300 is slidably and retractably moved to the second through hole 150b of the right side body of the pair of right side bodies 100a . For example, as shown in FIGS. 2 and 3, the through holes 150a and 150b may be non-threaded holes without a female thread.

The operation of the triple screw system (TSC) for rapid palate extension of the present invention and the operation of the arch expansion device having the TSC are as follows.

The triple screw system (TSC) for the arch expansion device for rapid palatal expansion of the present invention acts to extend the maxilla over two stages for a narrow and narrowed maxillary arch requiring palate extension.

First, Fig. 4 (a) shows an initial state before the expansion of the arch, and no palatal expansion is performed.

In this state, referring to FIG. 4 (B), a rotary operation key (not shown) is inserted into the keyhole 500 provided in the first expansion screw and rotated to move the symmetrical Extension.

That is, when the first extension screw 300 is rotated, the first guide rail 400 moves the pair of left and right main bodies 100a and 100b with a gap therebetween Direction.

More specifically, when a screw is turned using the key hole 500 of the first expansion screw 300, a pair of left and right main bodies 100a and 100b disposed on the left and right sides of the screw with respect to the extension 520, The right main body 100b of the pair is guided by the first guide rail 400 and simultaneously moves in the direction opposite to the gap between them so that the first stage of the maxillary arch expansion is performed.

4 (b), the second stage of the maxillary arch expansion is performed. If the additional expansion is required in the state shown in (b) of FIG. 4, referring to (D) and (D) The case of expanding the left and right sides of the maxillary arch in performing the expansion will be described in order.

Referring to FIG. 4 (c), when the left side of the maxillary arch is to be further expanded in performing the second-stage maxillary arch expansion, the key holes 500a (500a) provided in the second expansion screw 300a The left main body 100a is guided by the second guide rail 400a so that the gap between the left main body 100a and the left main body 100a is opened.

More specifically, when the screw is turned using the keyhole 500a of the second expansion screw 300a, a pair of left main bodies 100a disposed on the left and right sides of the screw about the extension 520a, A main body positioned on the right side of the extended portion 520a of the pair of left main bodies 100a is not left in place but a pair of left side bodies The space between the main bodies 100a is opened.

Referring to FIG. 4 (d), when the right side of the maxillary arch is to be further extended in performing the second-stage maxillary arch expansion, the key hole 500b provided in the third expansion screw 300b, So that the pair of right side bodies 100b are guided by the third guide rails 400b and spaced apart therefrom.

More specifically, when the screw is turned using the keyhole 500b of the third expansion screw 300b, a pair of right-side bodies 100b disposed on the left and right sides of the screw about the extension 520b, The main body positioned on the left side of the pair of right side bodies 100b on the left side with respect to the extended portion 520b does not stay in place but a pair of right side bodies The gap between the main bodies 100b is opened.

In the above-described second step, the extension operation using the pair of left main bodies 100a and the extension operation using the pair of right main bodies 100b are performed in a comprehensive manner The amount of extension using the pair of left main bodies 100a and the amount of extension using the pair of right main bodies 100b, that is, the amount of extension using the pair of right main bodies 100b, It goes without saying that the amount of expansion may be different.

That is, according to the present invention, when additional expansion is required after the first-stage maxillary arch expansion, the amount of extension to the maxillary arch can be increased symmetrically through the second-stage maxillary arch expansion, When asymmetrical extension is required, the amount of palate extension is adjusted asymmetrically using the second extension screw 300a or the third extension screw 300b (refer to (C) of FIG. 4 and (D) of FIG. 4 )can do.

Accordingly, the present invention enables a more various and effective palatal expansion amount control as compared with the existing arch expansion device which can only symmetrically expand.

According to the present invention, the arch expansion process is performed through two steps of the first stage and the second stage on the premise that symmetrical expansion is performed basically. However, the triple screw system (TSC) It can be seen that the arch expansion process is performed in three stages of the first expansion screw adjustment step, the second expansion screw adjustment step on the left side, and the third expansion screw adjustment step on the right side in a substantially symmetrical manner will be.

5 is a view showing an example in which an arch expansion device to which a triple screw system for rapid palatal expansion of the present invention is applied is applied to a maxilla of a patient.

5, an arch expansion device according to the present invention includes components of a triple screw system (TSC), and further includes a pair of left and right main bodies 100a and 100b, And the other end is configured to include arms 200 extending toward the side of the micro screw (S) to be placed in the maxilla.

At this time, the arm 200 includes a main body positioned on the left side of the pair of left main bodies 100a with respect to the extending portion 520a, and a main body positioned on the left side of the pair of right main bodies 100b with respect to the extending portion 520b Respectively, to the right side of the body.

That is, the arm 200 is connected to a portion capable of providing an expanding force to the maxilla through movement of the first to third expansion screws 300, 300a, 300b.

The arch expansion device having the triple screw system (TSC) according to the present embodiment configured as described above is capable of expanding the amount of the maxillary arch according to the state of the patient by the expansion amount adjusting function of the first to third expansion screws 300, 300a, Can be adjusted.

In other words, according to the present invention, it is possible to perform symmetrical additional expansion or asymmetrical additional expansion according to the patient's condition, and to perform only alternative expansion to any one of the left and right maxims as necessary, It is possible to more variously and effectively control the amount of palatal expansion as compared with a conventional arch expansion device which can be expanded only in a narrow range, thereby further improving the effect of orthodontic treatment and further enhancing the patient's satisfaction with the procedure and reliability have.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them.

For example, although the first to third guide rails 400, 400a, and 400b are provided to smoothly guide the movement of the main body, the guide rails may be omitted.

This is because a pair of left and right main bodies 100a and 100b are opened or closed by a rotation of any one of the first to third expansion screws 300, 300a and 300b, When the space between the main body 100a or between the pair of right main bodies 100a is opened, a pair of left main bodies 100a and a pair of right main bodies 100b are provided with a micro screw S So that the left and right movement of the main body can be stably performed when the respective extension screws are rotated.

Although the first guide rails 400 are disposed on opposite sides of the first expansion screw 300 in the above embodiment, the present invention is not limited thereto. That is, the first guide rails 400 may be designed so that they are located on the same side rather than on opposite sides with respect to the first expansion screw 300.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and thus the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

TSC: Triple screw system S: Microscrew
100a: a pair of left main bodies 100b: a pair of right main bodies
130, 130a, 130b: screw mounting holes 140, 140a, 140b: guide holes
150a, 150b: Through hole 200:
300: first expansion screw 300a: second expansion screw
300b: third expansion screw 400: first guide rail
400a: second guide rail 400b: third guide rail
500, 500a, 500b: keyhole 520, 520a, 520b:

Claims (10)

A pair of left side bodies;
A pair of right side bodies;
An arm fixed at one end to the pair of left main bodies and the pair of right main bodies, the other end extending toward the teeth;
A first extension screw inserted into both the left and right main bodies and the pair of right and left main bodies so as to penetrate through the pair of left and right main bodies and the pair of right and left main bodies;
A second extension screw inserted into both the left and right main bodies so as to penetrate the pair of left main bodies to adjust left and right gaps between the pair of left main bodies; And
And a third extension screw inserted into both the right and left main bodies so as to penetrate through the pair of right main bodies to adjust the left and right gaps between the pair of right main bodies,
Wherein a first through hole is formed in the left side body of the pair of left main bodies so that a left side portion of the first extending screw can be moved forward and backward;
Wherein a right side body of the pair of right side bodies is formed with a second through hole into which a right side portion of the first expansion screw can be moved forward and backward. The method according to claim 1,
The arch expansion device includes:
A pair of left and right main bodies,
And a first guide rail guiding movement of both the pair of left and right bodies as the first extension screw rotates. 3. The method according to claim 1 or 2,
The arch expansion device includes:
A second guide rail installed to penetrate the pair of left main bodies and guiding movement of the pair of left main bodies only when the second extension screw rotates; And
And a third guide rail installed to penetrate the pair of right side bodies and guiding movement of only the pair of right side bodies when the third extension screw rotates. . The method according to claim 1,
Wherein the first expansion screw, the second expansion screw, and the third expansion screw are provided with key holes for screw rotation, respectively. delete delete A screw system for an arch expansion device in which the gap of the main body fixed to the maxilla is adjusted according to the rotation of the extension screw,
A pair of left side bodies;
A pair of right side bodies;
A first extension screw inserted into both the left and right main bodies and the pair of right and left main bodies so as to pass through the left and right main bodies and the pair of right and left main bodies;
A second extension screw inserted into both the left and right main bodies so as to penetrate the pair of left main bodies to adjust left and right gaps of the pair of left main bodies; And
And a third extension screw inserted into both the right and left main bodies so as to penetrate the pair of right main bodies to adjust left and right gaps of the pair of right main bodies,
Wherein a first through hole is formed in the left side body of the pair of left main bodies so that a left side portion of the first extending screw can be moved forward and backward;
Wherein the right side body of the pair of right side bodies is formed with a second through hole into which the right side portion of the first expansion screw is inserted so as to be movable forward and backward. 8. The method of claim 7,
In the triple screw system,
A pair of left and right main bodies,
And a first guide rail for guiding movement of both the pair of left and right main bodies as the first expansion screw rotates. 9. The method according to claim 7 or 8,
In the triple screw system,
A second guide rail installed to penetrate the pair of left main bodies and guiding movement of the pair of left main bodies when the second extension screw rotates; And
And a third guide rail extending through the pair of right side bodies and guiding movement of the pair of right side bodies during rotation of the third extension screw. Triple screw system for. 8. The method of claim 7,
Wherein the first expansion screw, the second expansion screw, and the third expansion screw are provided with key holes for screw rotation, respectively.

Images