Anti-slip multidirectional traction tooth orthodontic anchorage nail

Abstract

The anti-slip multidirectional traction tooth orthodontic anchorage nail comprises a top part, a contraction head part, a limiting part, a transition neck part and a screw tail end, the contraction head part is respectively adjacent to the top part and the limiting part, and the transition neck part is respectively adjacent to the limiting part and the screw tail end. The top is equally divided into four fan-shaped blocks through a center cross groove, the central angle edge of each fan-shaped block inclines towards the longitudinal center line of the center cross groove, and the bottom of each fan-shaped block is undercut to form an arc notch. The contraction head part is provided with a hyperbolic contour and is provided with a transverse through hole parallel to one groove direction of the central cross groove of the top part; and the maximum outer diameter of the contraction head part is respectively smaller than the maximum outer diameter of the top part and the maximum outer diameter of the limiting part. And the limiting part is in a hexahedron shape and is provided with a transverse through hole parallel to the other groove direction of the central cross-shaped groove of the top part. The orthodontic anchorage nail disclosed by the utility model can realize multi-angle, multi-direction and multi-point firm traction matched with a traction piece, and can effectively adapt to dynamic angle change and reduce clinical operation difficulty.

Description

Technical Field

[0001] The utility model relates to a tooth orthodontic anchorage nail. Background Art

[0002] During orthodontic treatment, orthodontic anchorage pins are implanted in the maxillary and mandibular bones as a fixed component to resist the reaction force generated by tooth movement and assist in orthodontic movement. Because anchorage pins remain in the patient's mouth for a period of time, their heads must be smooth to prevent scratches or punctures, while also minimizing the patient's foreign body sensation.

[0003] The existing orthodontic anchorage nail head configuration is mostly disc-shaped or hemispherical, and there is a phenomenon that the traction line is easy to slip: when the angle between the traction force direction and the axis of the anchorage nail is too large (especially in the near horizontal direction), the rubber band is easy to detach from the head.

[0004] Furthermore, existing orthodontic anchorage nails suffer from the drawbacks of single functions and limited static anti-slip structures. For example, the "cloverleaf" structure disclosed in CN221949972U can only fix traction forces in three or four directions and cannot adapt to dynamic changes in angles. Furthermore, there are still problems such as insufficient ligature points and unstable fixation of tiny traction lines. Utility Model Content

[0005] The utility model aims to provide a tooth orthodontic anchorage nail, which can at least realize multi-directional traction in an anti-slip manner.

[0006] According to the utility model, an anti-slip multi-directional traction tooth orthodontic anchorage nail is provided, comprising a top, a shrinking head, a limiting portion, a transition neck and a screw end, wherein the shrinking head is adjacent to the top and the limiting portion respectively, and the transition neck is adjacent to the limiting portion and the screw end respectively.

[0007] The top is divided into four sectors by the central cross groove, and the central corner of each sector is inclined toward the longitudinal center line of the central cross groove and the bottom is undercut to form a circular arc notch.

[0008] The shrinking head has a hyperbolic profile and is formed with a transverse through hole parallel to one of the central cross grooves of the top. The maximum outer diameter of the shrinking head is smaller than the maximum outer diameter of the top and the maximum outer diameter of the limit portion.

[0009] The limiting portion has a hexagonal shape and is formed with a transverse through hole parallel to the other groove direction of the central cross groove at the top.

[0010] According to the orthodontic anchorage nail of the present invention, the top preferably has a dome profile.

[0011] According to the orthodontic anchorage nail of the present invention, the central angle edge of each sector block is preferably inclined at 30° toward the longitudinal center line of the cross groove.

[0012] According to the orthodontic anchorage nail of the present invention, the transition neck preferably has a smooth arc-shaped circumferential surface.

[0013] According to the orthodontic anchorage nail of the present invention, the corners of each sector block are preferably rounded.

[0014] According to the orthodontic anchorage nail of the present invention, it is preferably made in one piece and has a maximum outer diameter at the limiting portion.

[0015] The orthodontic anchorage nail of the utility model is designed with an inclined cross groove at the top and a root-cut arc, so that the four fan-shaped blocks at the top can be used individually and / or in any combination to securely tie elastic traction lines, rubber bands and other traction parts at multiple angles, directions and points, and can effectively adapt to dynamic angle changes and reduce the difficulty of clinical operation. In addition, the spatial cross-shaped through hole formed by the shrinking head and the limiting part further enhances the long-term traction and flexible ligation operation effect of the orthodontic anchorage nail. In addition, the rounded corners and smooth arc surface design also effectively reduce the risks of soft tissue irritation, plaque adhesion and inflammation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the perspective structure of the orthodontic anchorage nail according to the present invention;

[0017] Figure 2 for Figure 1 A schematic top view of the orthodontic anchorage pin shown; and

[0018] Figure 3 for Figure 1 Schematic diagram of the partial cross-sectional structure of the orthodontic anchorage nail shown in . DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective structural diagram of an orthodontic anchorage nail according to the present invention. Figure 2 for Figure 1 The top view of the orthodontic anchorage nail is shown in FIG. Figure 3 for Figure 1 The partial cross-sectional structure diagram of the orthodontic anchorage nail is shown in FIG. Figure 1 As shown, the orthodontic anchorage nail of the present invention is made in one piece, and generally comprises a top 1, a shrinking head 2, a limiting portion 3, a transition neck 4 and a screw end 5 from top to bottom.

[0021] like Figure 1-3As shown, the top 1 forms a dome profile and is provided with a first transverse groove (in the Y-axis direction) 10 and a second transverse groove (in the X-axis direction). The two intersect at the center of the top 1 to form a cross groove, thereby equally dividing and defining four sector-shaped blocks 12. The central corner edge 121 of each sector-shaped block 12 is inclined at an angle of approximately 30° toward the longitudinal centerline (in the vertical direction shown in the figure) of the cross groove, and the bottom is undercut to form an arc notch 1210, as shown in FIG. Figure 3 In addition, the chord edge 122, the arc edge 123 and the corners of each sector 12 are all rounded to form a smooth contour.

[0022] like Figure 1 and Figure 3 As shown, the shrinking head 2 has a hyperbolic profile and is formed with a first transverse through hole 20 parallel to the second transverse groove 11 of the top 1. The shrinking head 2 connects the top 1 and the limiting portion 3 and has a maximum outer diameter smaller than the maximum outer diameters of the two.

[0023] like Figure 1 and 2 As shown, the limiting portion 3 has a hexagonal configuration and is formed with a second transverse through hole 30 parallel to the first transverse groove 10 of the top 1. The corners of the limiting portion 3 are also rounded. The orthodontic anchorage nail has a maximum outer diameter at the limiting portion 3.

[0024] like Figure 1 As shown, the transition neck 4 has a smooth arc-shaped circumferential surface or a similar inverted cone surface, connecting the limiting portion 3 and the screw end 5.

[0025] According to the orthodontic anchor nail of the present invention, when the cross groove is used to cooperate with the elastic traction line or rubber ring and other matching traction parts, the inclined design of the sector blocks 12 not only makes the cross groove as a whole similar to the inverted hook shape, but also the transverse grooves between any adjacent sector blocks 12 are all inverted hook shape, so that the matching traction part can be hung firmly without slipping, and the greater the traction force, the more firmly it is hung. Even when the angle between the traction force direction and the axis of the anchor nail is too large (especially when it is close to the horizontal direction), it can still ensure that the matching traction part is stably hung on the anchor nail, and even when the traction angle changes, it can still maintain stable traction and hanging. The matching traction part can also be chosen to be hung on any sector block 12 individually - the arc notch 1210 formed by the root cutting at the bottom of the central angle edge 121 of the circle can make any sector block 12 individually hang the matching traction part and make it firmly stuck on the top 1. In addition, the above structural design allows the doctor to match the ligature wire and other parts at the top 1 of the orthodontic anchor nail when necessary, expanding the ligature point position.

[0026] The cross-shaped through hole formed by the shrinking head 2 and the limiting portion 3 allows for long-term traction with different traction angles of the traction piece and flexible ligation of orthodontic ligatures or ligature rings.

[0027] In short, the orthodontic anchorage nail of the present invention can effectively adapt to dynamic angle changes while achieving multi-angle and multi-directional firm traction.

Claims

1. An anti-slip multi-directional traction tooth orthodontic anchorage nail, characterized in that: It includes a top, a shrinking head, a limiting portion, a transition neck and a screw end, wherein the shrinking head is adjacent to the top and the limiting portion respectively, and the transition neck is adjacent to the limiting portion and the screw end respectively. The top is divided into four sectors by the central cross groove, and the central corner of each sector is inclined toward the longitudinal center line of the central cross groove and the bottom is undercut to form a circular arc notch. The shrinking head has a hyperbolic profile and is formed with a transverse through hole parallel to one of the central cross grooves of the top. The maximum outer diameter of the shrinking head is smaller than the maximum outer diameter of the top and the maximum outer diameter of the limit portion. The limiting portion has a hexagonal shape and is formed with a transverse through hole parallel to the other groove direction of the central cross groove at the top.

2. The anti-slip multi-directional traction tooth orthodontic anchorage nail according to claim 1, characterized in that: The top has a dome profile.

3. The anti-slip multi-directional traction tooth orthodontic anchorage nail according to claim 1, characterized in that: The central angle edge of each sector block is inclined 30° toward the longitudinal center line of the cross slot.

4. The anti-slip multi-directional traction tooth orthodontic anchorage nail according to claim 1, characterized in that: The transition neck has a smooth arc-shaped circumferential surface.

5. The anti-slip multi-directional traction tooth orthodontic anchorage nail according to claim 1, characterized in that: The corners of each sector are rounded.

6. The anti-slip multi-directional traction tooth orthodontic anchorage nail according to claim 1, characterized in that: It is made in one piece and has a maximum outer diameter at the limiting portion.

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