Arch expansion amount keeping device and arch expander

Abstract

The utility model provides a bow expansion amount keeping device which comprises a clamp body provided with an upper buckle and a lower buckle, a positioning pin is arranged on the inner side of the clamp body, when the clamp body is in a bow expansion amount keeping state, the upper buckle is located at the upper end of a bow expansion device, the lower buckle is located at the lower end of the bow expansion device, and the clamp is clamped and fixed on the bow expansion device through the upper buckle and the lower buckle. And the positioning pin is inserted into the adjusting hole of the arch expander. According to the arch expansion amount keeping device, the rotating seat of the arch expander can be conveniently locked, and the arch expansion amount can be kept.

Description

Technical Field

[0001] The utility model belongs to oral medical equipment, in particular to an arch expansion amount maintaining device and an arch expander. Background Art

[0002] The arch expander, also known as the dental arch expansion spiral, is used to treat the underdeveloped and narrow maxillary bone that may lead to crowding, protrusion, crossbite, etc. of the upper dentition, which requires maxillary arch expansion. Through orthopedic force, the width of the upper dentition and the maxilla is widened to improve the shape of the upper dental arch and alleviate the deformity of the upper dentition.

[0003] Reference Figure 1 The existing expander includes: a slide bar 7, a screw rod 6, a base 8 and an adjustment rod (not shown). The slide bar 7 and the screw rod 6 are arranged in parallel. There are two bases 8, which are slidably arranged on the slide bar 7 and threadedly connected with the screw rod 6. Usually, a rotating seat 9 is arranged on the screw rod 6, and an adjustment hole 10 is arranged in the circumference of the rotating seat 9. After the adjustment rod is inserted into the adjustment hole 10, the screw rod 6 can be rotated by toggling the adjustment rod, so as to adjust the distance between the two bases 8. When in use, the expander is placed in an appropriate position, the screw rod 6 is rotated by the adjustment rod to expand the expander, and the correction force is transmitted to the teeth and alveolar bones through the base 8 to expand the width and length of the upper and lower dental arches.

[0004] After the expander is opened to the predetermined position, it needs to be kept at that position. At present, the expander is usually sealed with resin to prevent the screw from reversing and causing loss of expansion. However, when the screw needs to be rotated to adjust the expander later, the resin needs to be removed, which is very inconvenient. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a bow expansion amount maintaining device and a bow expander, which are convenient for locking the rotating seat of the bow expander to maintain the bow expansion amount.

[0006] The utility model provides a bow expansion amount maintaining device, comprising: a clip body with an upper clip and a lower clip, a positioning pin is arranged on the inner side of the clip body, when in a bow expansion amount maintaining state, the upper clip is located at the upper end of the expander, the lower clip is located at the lower end of the expander, the clip is fixed on the expander through the upper clip and the lower clip, and the positioning pin is inserted into the adjustment hole of the expander.

[0007] The working principle of the expansion amount maintaining device provided by the utility model is as follows: after the expander is opened to a predetermined position, the expansion amount maintaining device is clamped on the expander, and the positioning pin is inserted into the adjustment hole of the expander rotating seat, so as to prevent the screw from rotating and maintain the expansion amount. When disassembly is required, only the clamp needs to be removed. It is easy to use and can be directly applied to the existing expander, with low cost.

[0008] According to an embodiment of the present invention, one end of the upper buckle and the lower buckle away from the clip body shrinks inwardly.

[0009] According to an embodiment provided by the utility model, the ends of the upper buckle and the lower buckle have outward expansion parts.

[0010] According to an embodiment provided by the utility model, the upper buckle and the lower buckle are sheet-shaped spring pieces.

[0011] According to an implementation manner provided by the utility model, the material of the spring piece is plastic or metal.

[0012] According to an embodiment of the present invention, the outer surface of the clip body is covered with a skin-friendly protective layer.

[0013] The utility model also protects an arch expander, comprising any arch expansion amount maintaining device provided by the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0015] Figure 1 It is a structural schematic diagram of an existing arch expander;

[0016] Figure 2 A schematic diagram of the structure of a device for maintaining the amount of expansion provided by an embodiment.

[0017] Description of Reference Numerals

[0018] 1-clip body, 10-adjustment hole, 2-upper buckle, 3-lower buckle, 4-positioning pin, 5-outer expansion part, 6-screw, 7-slide rod, 8-base, 9-rotating seat. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0020] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0021] Reference Figure 1 and Figure 2The present embodiment provides a device for maintaining the amount of expansion, comprising: a clip body 1 having an upper clip 2 and a lower clip 3, a positioning pin 4 being provided on the inner side of the clip body 1, when in the state of maintaining the amount of expansion, the upper clip 2 is located at the upper end of the expander, the lower clip 3 is located at the lower end of the expander, the clip is fixed to the expander through the upper clip 2 and the lower clip 3, and the positioning pin 4 is inserted into the adjustment hole 10 of the expander.

[0022] After the expander is opened to a predetermined position, the expansion amount retaining device is clamped on the expander, and the positioning pin 4 is inserted into the adjustment hole 10 of the expander rotating seat 9, thereby preventing the screw 6 from rotating and maintaining the expansion amount. When disassembly is required, only the clip needs to be removed. It is easy to use and can be directly applied to existing expanders with low cost.

[0023] Specifically, the ends of the upper buckle 2 and the lower buckle 3 away from the clip body 1 are contracted inwardly, and the ends of the upper buckle 2 and the lower buckle 3 have an outward expansion portion 5, and the ends away from the clip body 1 are opened outwardly for easy installation.

[0024] The upper buckle 2 and the lower buckle 3 are sheet-shaped springs, which are clamped on the base 8 after installation, and can also be clamped on the two slide bars 7 in other embodiments.

[0025] In this embodiment, the material of the spring piece is metal, and other materials such as plastic may also be used instead.

[0026] More specifically, the outer surface of the clip body 1 is covered with a skin-friendly protective layer, such as a silicone material, to improve comfort.

[0027] More specifically, it includes an expansion amount maintaining device.

[0028] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0029] In the description of this specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A device for maintaining the amount of expansion, characterized in that: include: A clip body (1) is provided with an upper clip (2) and a lower clip (3), wherein a positioning pin (4) is provided on the inner side of the clip body (1); when in a bow expansion amount maintaining state, the upper clip (2) is located at the upper end of the bow expander, and the lower clip (3) is located at the lower end of the bow expander; the clip is fixed to the bow expander via the upper clip (2) and the lower clip (3), and the positioning pin (4) is inserted into an adjustment hole (10) of the bow expander.

2. The device for maintaining the amount of expansion according to claim 1, characterized in that: The ends of the upper buckle (2) and the lower buckle (3) away from the clip body (1) are retracted inwards.

3. The device for maintaining the amount of expansion according to claim 2, characterized in that: The ends of the upper buckle (2) and the lower buckle (3) have outward expansion parts (5).

4. The device for maintaining the amount of expansion according to claim 1, characterized in that: The upper buckle (2) and the lower buckle (3) are sheet-shaped spring pieces.

5. The device for maintaining the amount of expansion according to claim 4, characterized in that: The material of the spring piece is plastic or metal.

6. The device for maintaining the amount of expansion according to claim 1, characterized in that: The outer surface of the clip body (1) is covered with a skin-friendly protective layer.

7. An expander, characterized in that: It comprises the expansion amount maintaining device according to any one of claims 1-6.

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