CN210903428U

CN210903428U - Bow expander

Info

Publication number: CN210903428U
Application number: CN201921118063.1U
Authority: CN
Inventors: 刘从华; 王春林; 宋思吟; 周丽淑; 林丽佳
Original assignee: Stomatological Hospital Of Southern Medical University
Current assignee: Stomatological Hospital Of Southern Medical University
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-07-03
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses an expand bow ware, it includes expands bow ware body and deflector, expands bow ware body and includes that installation department, two first connecting portion and two tooth close hold in the palm, and the tooth close holds in the palm the tip that is located first connecting portion, and two first connecting portions are located the both sides of installation department respectively, and the installation department shaping has four first mounting holes that are used for implanting a resistance nail, and the deflector shaping has four second mounting holes that correspond with first mounting hole. The design has the deflector of second mounting hole, and when installing the expander clinically, anchorage nail implanted along the second mounting hole, avoids anchorage nail implantation to appear the deviation. The utility model discloses rational in infrastructure, convenient operation, but wide application in oral cavity apparatus technical field.

Description

Bow expander

Technical Field

The utility model relates to the technical field of oral cavity instruments, in particular to a bow expander.

Background

The clinical manifestations of transverse maxillary hypoplasia include that the upper arch is smaller than the lower arch, the posterior teeth are in inverse occlusion or even in inverse locking occlusion, the dentition is crowded, the palatal vault is high, the buccal vestibular sulcus gap is widened, sometimes in order to avoid the inverse occlusion, the upper jaw is in compensatory buccal inclination for molar teeth, and the lower jaw is in compensatory lingual inclination for molar teeth, more and more doctors are aware that the transverse maxillary hypoplasia is an important reason for malocclusion, the sagittal and vertical problems are mostly generated in the transverse direction, the potential periodontal problem can be reduced by treating the transverse problem, and the stability of orthodontic treatment is improved. In 1860, Angell proposed a maxillary arch expansion technology to treat maxillary transverse growth deficiency, in recent years, maxillary rapid arch expansion, maxillary slow arch expansion, operation-assisted maxillary arch expansion and micro-anchorage nail-assisted bony arch expansion are widely applied clinically, and orthodontists select different arch expansion modes according to factors such as age, arch expansion amount and wound size.

At present, micro-anchorage nail-assisted bone-type arch augmentation treatment for adult maxillary transverse development deficiency is agreed by scholars at home and abroad, has the characteristics of minimal invasion, small side effect and difficult recurrence, but orthodontists also find the deficiency in the use process: 1, patients with transverse maxillary development deficiency often have palatal caps with high arch and different shapes, and the finished product of the micro-branch anti-nail auxiliary bony arch expander is difficult to place at an ideal position; 2, the anchorage pin needs to be implanted into double cortical bone to obtain long-term stability, and due to the individualized difference of the structures of the palatal caps of patients, it is difficult to implant the anchorage pin at an optimal angle into an optimal position in the implantation process.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned technical problem, conveniently implant anchorage nail, the utility model provides an expand bow ware, the technical scheme who adopts as follows:

expand the bow ware and hold in the palm including installation department, two first connecting portions and two occlusal supports including expanding bow ware body and deflector, expand the bow ware body, the occlusal support is located the tip of first connecting portion, and two first connecting portions are located the both sides of installation department respectively, and the installation department shaping has four first mounting holes that are used for implanting a anchorage nail, and the deflector shaping has four second mounting holes that correspond with first mounting hole.

Furthermore, the both sides of deflector are the shaping respectively and are had the second connecting portion, and the one end shaping of keeping away from the deflector on the second connecting portion has the three location portion that corresponds upper jaw second premolar, first molar, second molar respectively.

Furthermore, a through hole is formed in one end, far away from the guide plate, of the second connecting part.

Furthermore, the two occlusal supports respectively correspond to the palatal sides of the first molars on both sides of the upper jaw.

Further, the installation department includes left half and right half, and two first connecting portions are located left half and right half respectively, and the shaping has a concave part that is used for placing spiral expansion portion after left half and the concatenation of right half.

Has the advantages that: the guide plate with the second mounting hole is designed, and when the arch expander is clinically mounted, the anchorage nail is implanted along the second mounting hole, so that the implantation deviation of the anchorage nail is avoided; during installation, the arch expander body determines the position of the upper jaw through the guide plate, and the arch expander body is prevented from deviating. The utility model discloses rational in infrastructure, convenient operation, but wide application in oral cavity apparatus technical field.

Drawings

FIG. 1 is a schematic structural view of an expander body;

FIG. 2 is a top view of the structure of FIG. 1;

FIG. 3 is a view showing the structure of a guide plate;

FIG. 4 is a top view of the structure of FIG. 3;

fig. 5 is a schematic structural view of the helical expansion portion.

Detailed Description

The present invention will be further described with reference to fig. 1 to 5.

The utility model relates to an expand bow ware, it is including expanding bow ware body and deflector 11, and deflector 11 is used for confirming the mounted position of expanding the bow ware body and the implantation position of anchorage nail, expands bow ware body and deflector 11 and all adopts the technological preparation that 3D printed, according to patient palatal cover shape adaptability preparation, expands bow ware body and organizes a configuration structure and palatal mucosa and dissect the form laminating, reduces clinical operation's technological sensitivity.

The arch expander body comprises an installation part 12, two first connection parts 13 and two tooth-closing supports 14, the installation part 12 is fixed on the palate through an anchorage nail, the tooth-closing supports 14 are located at the end parts of the first connection parts 13, the two first connection parts 13 are respectively located on two sides of the installation part 12, and the two tooth-closing supports 14 respectively correspond to the palate side surfaces of first molar teeth on two sides of the upper jaw.

The mounting portion 12 includes a left half and a right half, the two first connecting portions 13 are respectively located on the left half and the right half, and a concave portion 18 for placing the spiral expansion portion is formed after the left half and the right half are spliced.

The spiral expansion part is a prior art, and the spiral expansion part is arranged in the concave part 18 by welding, and the two first connecting parts 13 are gradually expanded outwards by the spiral expansion part.

The spiral expansion part comprises a first connecting rod 21, a second connecting rod 22, a first moving plate 23, a second moving plate 24 and a threaded rod 20, the first connecting rod 21, the threaded rod 20 and the second connecting rod 22 are arranged in parallel, the first moving plate 23 is welded on the left half part, and the second moving plate 24 is welded on the right half part. The first moving plate 23 is formed with through holes for the first connecting rod 21, the threaded rod 20 and the second connecting rod 22 to pass through respectively, the second moving plate 24 is formed with through holes for the first connecting rod 21, the threaded rod 20 and the second connecting rod 22 to pass through respectively, the first connecting rod 21 and the second connecting rod 22 support the first moving plate 23 and the second moving plate 24 in the bow expanding process, the middle of the threaded rod 20 is provided with 4 small holes, each small hole is arranged at every 90 degrees, the threaded rod 20 is rotated through the small holes once every morning and evening, the threaded rod is rotated at every 90 degrees, the first moving plate 23 and the second moving plate 24 can be moved towards opposite directions, the total moving amount of the two plates is 0.5mm every day, and therefore the bow expander is slowly expanded outwards.

Second connecting portions 19 are respectively formed on two sides of the guide plate 11, and three positioning portions respectively corresponding to the second premolar, the first molar and the second molar of the upper jaw are formed at one end, far away from the guide plate 11, of the second connecting portions 19. The second connecting portion 19 has a through hole 17 formed at an end thereof remote from the guide plate 11, and the through hole 17 is used to check whether the guide plate 11 is in place when the guide plate 11 is worn in the mouth.

The shaping of installation department 12 has four first mounting holes 15 that are used for implanting anchorage nail, and the distribution of first mounting hole 15 specifically is: the left half and the right half are provided with two first mounting holes 15, and the concave part 18 is positioned between the two first mounting holes.

The guide plate 11 is formed with four second mounting holes 16 corresponding to the first mounting holes 15, the aperture of the first mounting holes 15 is slightly larger than the diameter of the anchorage nail, and the aperture of the second mounting holes 16 is slightly larger than the diameter of the working end of the anchorage nail implanting handle. Clinically, when the anchorage nail is implanted, the anchorage nail sequentially passes through the first mounting hole 15 and the second mounting hole 16, and the guide plate 11 plays a role in guiding the implantation direction, angle and depth of the anchorage nail.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. Expand bow ware, its characterized in that: including expanding bow ware body and deflector (11), expand bow ware body and include installation department (12), two first connecting portion (13) and two occlusal braces (14), occlusal brace (14) are located the tip of first connecting portion (13), two first connecting portion (13) are located the both sides of installation department (12) respectively, installation department (12) shaping has four first mounting hole (15) that are used for implanting an anchorage nail, deflector (11) shaping has four second mounting hole (16) that correspond with first mounting hole (15).

2. The arch expander of claim 1, wherein: second connecting parts (19) are respectively formed on two sides of the guide plate (11), and three positioning parts respectively corresponding to the second premolar, the first molar and the second molar of the upper jaw are formed at one end, far away from the guide plate (11), of the second connecting parts (19).

3. The arch expander of claim 2, wherein: a through hole (17) is formed in one end, far away from the guide plate (11), of the second connecting part (19).

4. The arch expander of claim 1, wherein: the two occlusal supports (14) respectively correspond to the palatal side surfaces of the first molars on two sides of the upper jaw.

5. The arch expander of claim 1, wherein: the mounting part (12) comprises a left half part and a right half part, the two first connecting parts (13) are respectively positioned on the left half part and the right half part, and a concave part (18) for placing the spiral expansion part is formed after the left half part and the right half part are spliced.