CN213489407U

CN213489407U - Novel temporary anchorage nail

Info

Publication number: CN213489407U
Application number: CN202021356759.0U
Authority: CN
Inventors: 姜楠; 孟勇
Original assignee: Qingdao Guanting Medical Technology Co ltd
Current assignee: Qingdao Guanting Medical Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-06-22
Anticipated expiration: 2030-07-09

Abstract

The utility model provides a novel interim anchorage nail, top-down includes: the head part is of a hemispherical structure, and 2-4 mutually-communicated holes are formed in the spherical surface of the hemisphere. The utility model discloses the head of anchorage nail is hemisphere structure, and the head is slick and sly ensured to the design of this kind of bulb cap formula, and furthest reduces the stimulation to the mucosa, is equipped with the hole that link up each other on the spheroid simultaneously, during the use, can the multi-angle be brought into and rescues the arch wire, realizes three-dimensional direction's control to the anterior teeth, has richened the single anchorage function of traditional anchorage nail.

Description

Novel temporary anchorage nail

Technical Field

The utility model relates to an just abnormal interim anchorage nail.

Background

The traditional temporary anchorage nail is used as a strong anchorage to be applied to orthodontic clinical correction, and can provide anchorage force during moving and adduction of anterior teeth, so that the anchorage of the posterior teeth is protected, the unfavorable mesial movement of the posterior teeth is avoided, the tooth extraction gap is completely used for crowding relief and anterior protrusion adduction of the anterior teeth, and a good clinical effect is achieved.

The implantation sites of the anchorage nails are located in the area near the membrane gum joint line, the head parts of the existing temporary anchorage nails are mostly in a blade shape or a prismatic shape, so that traumatic ulcer is easily caused by repeated friction with buccal mucosa, and the existing anchorage nails only can realize elastic traction, adduction and movement of anterior teeth and cannot be brought into the orthodontic arch wire to realize three-dimensional direction control of the anterior teeth; on the other hand, the gingival part of the existing anchorage nail is of a rough threaded structure and is mostly implanted obliquely, which can easily stimulate the injury of the gingival mucosa to form soft tissue infection and even cause the inflammation and pus overflow of the mucosa and the loosening and falling of the anchorage nail when the anchorage nail is serious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses head to current interim anchorage nail is sword form or arris form, very easily arouses traumatic ulcer with buccal mucosa repeated friction, and current anchorage nail only can realize that elasticity pulls adduction and remove anterior teeth, can't incorporate the problem of the three-dimensional direction control of correcting the arch wire and realizing anterior teeth, provides a novel interim anchorage nail of ball cap, adopts following technical scheme to realize: a novel temporary anchorage nail, comprising from top to bottom: the head part is of a hemispherical structure, and 2-4 mutually communicated holes are formed in the spherical surface of the hemisphere.

Further, the outer surface of the neck is a conical smooth surface.

Further, the threaded rod includes an upper portion, a middle portion, and a distal portion, the distal portion being tapered, a depth of the middle portion thread groove being greater than a depth of the upper portion thread groove.

Furthermore, two vertical chip removal grooves are symmetrically formed in the tail end portion.

Furthermore, the number of the holes is 4, and the holes are uniformly distributed.

Further, the cubic structure is a hexagonal structure.

Further, the thread of the threaded rod is in an asymmetric tooth form, the angle of one side of the tooth form is 20 degrees, and the angle of the other side of the tooth form is 35 degrees.

Furthermore, the height of the head part is 1.2-1.5mm, the height of the columnar connecting part is 0.6-0.8mm, the height of the neck part is 1.5-2mm, and the height of the cube structure is 1-1.5 mm.

Compared with the prior art, the utility model discloses a main advantage lies in with positive effect:

the utility model discloses the head of anchorage nail is hemisphere structure, and the head is slick and sly ensured to the design of this kind of bulb cap formula, and furthest reduces the stimulation to the mucosa, is equipped with the hole that link up each other on the spheroid simultaneously, during the use, can the multi-angle be brought into and rescues the arch wire, realizes three-dimensional direction's control to the anterior teeth, has richened the single anchorage function of traditional anchorage nail.

The utility model discloses the neck surface of anchorage nail is the toper smooth surface for wear the smooth migration of gum part, can reduce the peri-implantitis, and then greatly reduced anchorage nail's the rate of droing.

Other advantages and positive effects of the utility model are detailed in the specific implementation mode.

Drawings

FIG. 1 is a schematic view of an anchorage nail according to an embodiment of the present invention;

FIG. 2 is a schematic view of a front view structure of an anchorage nail according to an embodiment of the present invention;

FIG. 3 is a schematic top view of the anchorage pin head according to the embodiment of the present invention;

fig. 4 is a schematic longitudinal sectional view of a part of the thread of the threaded rod according to the embodiment of the present invention;

in the above figures: 1. a head portion; 1-1, a well; 2. a cubic structure; 3. a neck portion; 4. a threaded shank portion; 4-1, this department; 4-2, a terminal portion; 4-3, screw thread; 5. a columnar connecting portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments.

Example one

Referring to fig. 1 to 4, the present embodiment provides a novel ball cap anchorage nail, which includes, from top to bottom: head 1, cubic structure 2, neck 3 and screw rod portion 4.

In this embodiment, the head 1 has a smooth hemispherical structure, and 2-4 through holes 1-1 are formed on the spherical surface of the hemisphere, and the number of the holes is preferably 4 from the perspective of controlling the teeth in the clinical three-dimensional direction, and the holes are uniformly distributed on the spherical surface. The square structure 2 is a hexagonal structure, so that the anchorage nail can be locked and screwed into a bone conveniently by the handle. The outer surface of the neck 3 is a conical smooth surface. The threaded rod part 4 comprises an upper part, a middle part and a tail end part, wherein the tail end part is conical, the depth of a middle thread groove is greater than that of an upper thread groove, and loose cancellous bone structures can be better held. In order to increase the screwing force and the holding force of the threaded rod, referring to fig. 4, the thread 4-3 of this embodiment is an asymmetric tooth form, the tooth form has a side angle D of 20 ° and another side angle C of 35 °.

The smooth hemispherical head part greatly reduces the friction stimulation to the buccal mucosa, and the porous design of the head part can be used for containing the arch wire and realizing the three-dimensional direction control of the anterior teeth. The hexagonal structure is convenient for the handle to lock the anchorage nail and screw into the bone. The smooth neck design greatly reduces the incidence of periapical inflammation of the anchorage nail, because the existing anchorage nails clinically require oblique implantation, and if the anchorage nail is implanted too deeply, the hexagonal structure can press the gingival mucosa at the implantation position; if implanted too shallowly, the coarse thread structure under the hexagonal structure is exposed. This problem is effectively solved by the smooth moving transgingival part of the neck of this embodiment for the smooth transition of temporary anchorage nail from the alveolar bone under the soft tissue to the open oral environment, reduces the mucosa irritation, reduces the plaque attachment.

When the novel temporary anchorage nail is used, the hexagonal structure is locked by the handle and is implanted into the alveolar bone, the thread part of the hexagonal structure is positioned in the bone, the smooth neck part is a gum penetrating part, and the hexagonal structure is positioned above the gum mucous membrane. After implantation, the elastic traction device can be hung on the short columnar structure between the head and the cubic structure, and the correcting arch wire is placed in the hole which is communicated with the head of the anchorage pin, so that the three-dimensional direction control of the anterior teeth is realized.

Example two

Referring to fig. 2, the difference between this embodiment and the first embodiment is that in this embodiment, in order to minimize the foreign body sensation caused by the head in the oral cavity, the height L3 of the head 1 is set to 1.2-1.5mm after a plurality of tests in consideration of the mechanical strength of the head after punching; on the premise of not influencing the clinical traction effect, the height L4 of the columnar connecting part 5 is selected to be 0.6-0.8 mm; the height L2 of the neck 3 is 1.5-2mm according to the thickness of normal gum mucosa; under the condition of ensuring that the handle and the square body structure can be tightly locked, the height L1 of the square body structure 2 is 1-1.5 mm.

When the tail end tip of the threaded rod is screwed into the alveolar bone, bone fragments can be generated, so that the periphery of the anchorage nail is extruded, and the anchorage nail is not beneficial to being screwed in.

The reasonable structural design of this example both has promoted structural strength, has reduced the stimulation to the membrane gum again, and clinical use effect is preferred.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A novel temporary anchorage nail, comprising from top to bottom: head, column connecting portion, square body structure, neck and screw thread pole portion, its characterized in that: the head is of a hemispherical structure, and 2-4 mutually communicated holes are formed in the spherical surface of the hemisphere.

2. The new temporary anchorage nail according to claim 1, characterized in that the outer surface of the neck is a conical smooth surface.

3. The new temporary anchorage nail according to claim 1 or 2, wherein the threaded shank comprises an upper portion, a middle portion and a distal portion, the distal portion being tapered, the middle portion having a depth of the thread groove greater than the depth of the thread groove of the upper portion.

4. The new temporary anchorage nail according to claim 3, wherein the distal end portion is symmetrically provided with two vertical flutes.

5. The new temporary anchorage nail according to claim 1, wherein the number of the holes is 4, and the holes are uniformly distributed.

6. The new temporary anchorage nail according to claim 3, characterized in that the cubic structure is a hexagonal structure.

7. The new temporary anchorage nail according to claim 1, characterized in that the thread of the threaded rod is of asymmetrical profile, with an angle of 20 ° on one side and 35 ° on the other side.

8. The new temporary anchorage nail according to claim 1, wherein the height of the head is 1.2-1.5mm, the height of the columnar connecting part is 0.6-0.8mm, the height of the neck is 1.5-2mm, and the height of the cube structure is 1-1.5 mm.