Anti-reverse-rotation self-locking type planting nail

Abstract

The invention discloses an anti-reverse-rotation self-locking type implanting nail which comprises a screw part used for osseointegration, and threads used for bone fixation are arranged outside the screw part; the head is provided with a mounting hole, the mounting hole is used for mounting the auxiliary bow, the axis of the mounting hole is perpendicular to the axis of the screw part, and the axis of the mounting hole and the axis of the screw part are mutually staggered in the axis direction of the screw part; when the installation hole is stressed, the rotation axis of the installation hole and the axis of the screw part are staggered, the staggered arrangement of the axis of the installation hole and the axis of the screw part is adopted, it can be ensured that the rotation axis and the axis of the screw part are staggered when the installation hole is stressed, and then the anti-reverse-rotation self-locking function is achieved. Therefore, an operator can complete implanting of the implanting nail at a conventional angle, and the operation difficulty is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dental implants, and more particularly to an anti-reverse rotation self-locking implant nail. Background Art

[0002] During the orthodontic process, it is necessary to first place anchor pins on the tooth surface to provide a fixed source of force during the orthodontic process, and then further connect multiple teeth together through braces to provide continuous and stable traction for the teeth.

[0003] Refer to the attached Figure 1-2 The existing orthodontic appliance generally includes an auxiliary arch and an implant screw, wherein the implant screw is fixed in the bone by means of a thread and connected to one end of the auxiliary arch. During use, the existing implant screw will be reversed due to the traction force brought by the auxiliary arch, thereby causing the implant screw connection to become unstable. In response to this, the current clinical practice often adjusts the implant screw implantation angle from the general 45 degrees to 60 degrees-70 degrees to reduce the reversal force on the implant screw. However, this implantation angle has high requirements for the doctor's operation, resulting in greater difficulty in implantation, and therefore needs to be improved. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an anti-reverse rotation self-locking implant screw, which can avoid the instability of the connection caused by the force applied by the auxiliary arch, so as to ensure the stable connection with the bone and reduce the difficulty of the operation.

[0005] To achieve the above object, the present invention provides the following technical solutions: An anti-reverse rotation self-locking implant nail, comprising: A screw part for bone integration, the screw part is provided with a thread for bone fixation; A head, wherein a mounting hole is provided on the head, wherein the mounting hole is used for auxiliary bow installation, wherein the axis of the mounting hole is perpendicular to the axis of the screw portion, and the axis of the mounting hole is mutually misaligned with the axis of the screw portion along the direction of the axis of the screw portion; When the installation hole is subjected to force, the rotation axis and the axis of the screw portion are misaligned with each other.

[0006] As a further improvement of the present invention, the maximum angle formed by the axis of the installation hole and the axis of the screw portion is 20 degrees.

[0007] As a further improvement of the present invention, the thread is a self-tapping screw, and a healing groove extending along the axial direction of the screw portion is provided on one side of the self-tapping screw corresponding to the screw portion.

[0008] As a further improvement of the present invention, the shapes of the mounting holes include circular and square.

[0009] As a further improvement of the present invention, a connecting rod is provided on the head, and the head is connected to the screw part through the connecting rod. The connecting rod is inclined relative to the screw part so that the axis of the installation hole is misaligned with the axis of the screw part along the axis direction of the screw part.

[0010] As a further improvement of the present invention, the projection area of ​​the connecting rod decreases from an end close to the screw portion to an end far from the screw portion.

[0011] As a further improvement of the present invention, support plates are provided on both sides of the connecting rod, and the support plates are respectively connected to the connecting rod and the screw part to provide support for one side of the support plate.

[0012] As a further improvement of the present invention, the upper end of the screw portion forms a base, and the head is connected to one side of the base.

[0013] Beneficial effects of the present invention: 1. The axis of the installation hole and the axis of the screw are staggered, which can ensure that the rotation axis and the axis of the screw are staggered when the installation hole is stressed, thereby realizing the anti-reverse rotation self-locking function, so that the operator can complete the implantation of the implant screw at a conventional angle, thereby greatly reducing the difficulty of the operation; 2. By setting a healing groove on the self-tapping screw, the screw part can obtain a larger healing range during the bone healing process, thereby improving the stability of the implant, while also reducing the impact of the screw part screwing into the bone and the subsequent removal from the bone; 3. Due to the misalignment of the installation holes, the auxiliary arch can be pressed down on the anterior teeth area by lowering the force on the anterior teeth area on the basis of achieving a smaller implantation angle, while reducing the trauma of implanting nails in the anterior teeth area, and avoiding the problem of loose nails in the anterior teeth area causing re-implantation trauma or loose nails causing unbalanced force in the anterior teeth area. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of auxiliary bow installation in the prior art; Figure 2 This is an angle diagram of the prior art implant nail installation; Figure 3 It is an overall schematic diagram of the first embodiment of the present invention; Figure 4 It is an overall schematic diagram of the second embodiment of the present invention; Figure 5 It is an overall schematic diagram of the third embodiment of the present invention; Figure 6 This is a schematic diagram of the front installation of the present invention on a human body; Figure 7 This is a schematic diagram of the installation on the side of my body.

[0015] Figure numerals: 1. screw part; 2. thread; 3. base; 4. head; 5. mounting hole; 6. connecting rod; 7. support plate; 8. healing groove. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1-7 The present invention is further described in detail with reference to the accompanying drawings and embodiments, wherein the same components are represented by the same reference numerals.

[0017] Figure 3 The first embodiment of the present invention is an anti-reverse rotation self-locking implant screw, the overall length of which includes at least two sizes, preferably 6mm, 8mm and 10mm, and specifically includes: a screw part 1 for bone integration, the screw part 1 is provided with a thread 2 for bone fixation, and the screw part 1 is fixedly implanted with the bone through the thread 2.

[0018] Specifically, the thread 2 is a self-tapping screw to achieve implantation into the bone.

[0019] It also includes a head 4. A base 3 is provided on the top of the screw part 1. The base 3 includes a spherical, polygonal or other regular and irregular shapes. The head 4 is fixedly connected to the base 3. A mounting hole 5 is provided on the head 4. The mounting hole 5 is used for auxiliary bow installation. The mounting hole 5 is penetrated in the horizontal direction so that the axis of the mounting hole 5 is perpendicular to the axis of the screw part 1.

[0020] Furthermore, the axis of the mounting hole 5 is misaligned with the axis of the screw portion 1 along the axis direction of the screw portion 1 , so that when the mounting hole 5 is subjected to force, its rotation axis is misaligned with the axis of the screw portion 1 .

[0021] Preferably, the maximum angle formed by the axis of the mounting hole 5 and the axis of the screw portion 1 is 20 degrees.

[0022] Specifically, the shapes of the mounting holes 5 include circular and square, which are adapted to different models of auxiliary bows.

[0023] Since the axis of the mounting hole 5 is staggered with the axis of the screw part 1 along the axis direction of the screw part 1, when the mounting hole 5 is subjected to force from the auxiliary bow, the torsional force takes the axis of the mounting hole 5 as the center. However, due to the staggered axis of the mounting hole 5, the torsional force will not affect the fixation of the screw part 1, thereby achieving the reverse anti-self-locking effect.

[0024] Figure 4 This is the second embodiment of the present invention. It is different from the above embodiment in that a connecting rod 6 is provided on the head 4, and the head 4 is connected to the screw part 1 through the connecting rod 6. The connecting rod 6 is inclined relative to the screw part 1 so that the axis of the mounting hole 5 is misaligned with the axis of the screw part 1 along the axis direction of the screw part 1.

[0025] The connection method of the connecting rod 6 can enable the mounting hole 5 to obtain a larger adjustment range, and then the angle range between the axis of the mounting hole 5 and the axis of the screw part 1 can be adjusted by selecting the connecting rod 6 with a corresponding tilt angle.

[0026] Figure 5 This is the third embodiment of the present invention, which is different from the above embodiments in that the projection area of ​​the connecting rod 6 decreases from the end close to the screw portion 1 to the end far away from the screw portion 1 .

[0027] By setting the projection area, the root of the connecting rod 6 can obtain a larger diameter to improve its strength.

[0028] Furthermore, support plates 7 are provided on both sides of the connecting rod 6 , and the support plates 7 are respectively connected to the connecting rod 6 and the screw part 1 to provide support for one side of the support plate 7 .

[0029] The provision of the support plate 7 can further improve the overall strength of the connecting rod 6 to avoid breakage.

[0030] Preferably, a healing groove 8 extending along the axial direction of the screw portion 1 is provided on one side of the self-tapping screw corresponding to the screw portion 1 .

[0031] The provision of the healing groove 8 allows a larger healing range to be obtained during the bone healing process, thereby improving the bone healing effect, and further increasing the connection strength between the screw part 1 and the bone, thereby ensuring a stable connection.

[0032] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An anti-reverse rotation self-locking implant nail, characterized in that: include: A screw part (1) for bone integration, the screw part (1) is provided with a thread (2) for bone fixation on the outside, and a base (3) is provided on the top of the screw part (1); A head (4), the head (4) being fixedly connected to the base (3), the head (4) being provided with a mounting hole (5), the mounting hole (5) being used for mounting the auxiliary bow, the axis of the mounting hole (5) being arranged perpendicular to the axis of the screw portion (1), and the axis of the mounting hole (5) being offset from the axis of the screw portion (1) along the axis direction of the screw portion (1); When the installation hole (5) is subjected to force, its rotation axis and the axis of the screw portion (1) are misaligned with each other.

2. The anti-reverse rotation self-locking implant nail according to claim 1, characterized in that: The maximum angle formed by the axis of the installation hole (5) and the axis of the screw portion (1) is 20 degrees.

3. The anti-reverse rotation self-locking implant nail according to claim 1, characterized in that: The shapes of the mounting holes (5) include circular and square.

4. The anti-reverse rotation self-locking implant nail according to any one of claims 1 to 3, characterized in that: The head (4) is provided with a connecting rod (6), and the head (4) is connected to the base (3) via the connecting rod (6). The connecting rod (6) is arranged obliquely relative to the screw portion (1), so that the axis of the mounting hole (5) is offset from the axis of the screw portion (1) along the axis direction of the screw portion (1).

5. The anti-reverse rotation self-locking implant nail according to claim 4, characterized in that: The projection area of ​​the connecting rod (6) decreases from an end close to the screw portion (1) to an end away from the screw portion (1).

6. The anti-reverse rotation self-locking implant nail according to claim 4, characterized in that: Support plates (7) are provided on both sides of the connecting rod (6), and the support plates (7) are respectively connected to the connecting rod (6) and the screw portion (1) to provide support for one side of the support plate (7).

7. The anti-reverse rotation self-locking implant nail according to any one of claim 6, characterized in that: The thread (2) is a self-tapping screw, and a healing groove (8) extending along the axial direction of the screw portion (1) is provided on one side of the self-tapping screw corresponding to the screw portion (1).

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