CN109758244B - An anti-rotation and anti-dislocation oral implant system - Google Patents

Abstract

The invention discloses an oral implant system with anti-rotation and anti-dislocation, comprising an abutment, an implant and an abutment screw. The implant includes an implant inner cavity and an implant inner core arranged inside the implant cavity. The implant inner core is provided with an anti-rotation wing mechanism, and the implant body is provided with a rotary wing outlet for the anti-rotation wing mechanism to extend and lock the implant. . The oral implant system with anti-rotation, anti-dislocation and prevention of abutment screw fracture provided by the present invention is mainly used for patients with insufficient alveolar bone density in the edentulous area. The initial stability of the implant-bone contact area is increased by increasing the implant-bone contact area. Prevent implant dislocation; prevent implant rotation through the antagonistic action of the anti-rotation wing mechanism; prevent it from breaking due to lateral force by providing a fulcrum under the abutment screw.

Description

An anti-rotation and anti-dislocation oral implant system

technical field

The invention relates to the technical field of implant restoration after tooth loss. Specifically, it relates to an oral implant system with anti-rotation and anti-dislocation.

Background technique

In dental implant clinics, there is often a special edentulous patient. For example, the bone density of the alveolar bone in the edentulous area is low, and bone compression surgery is required to complete the conventional intraosseous implant surgery. However, excessive bone compression will cause surrounding implants. Osteonecrosis is not conducive to implant osseointegration.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the above problems and provide an anti-rotation and anti-dislocation oral implant system, so that patients with low alveolar bone density in the edentulous area can avoid problems such as implant rotation and dislocation after receiving implant surgery. .

To achieve the above object, the present invention adopts the following technical means:

An anti-rotation and anti-dislocation oral implant system includes an abutment, an implant and an abutment screw, wherein the abutment is arranged on the implant and fixed by the abutment screw;

The implant includes an implant cavity and an implant core arranged inside the implant cavity. The implant core is provided with an anti-rotation wing mechanism, and the implant is provided with an anti-rotation wing mechanism for extending and locking the implant. Rotary wing exit.

As a further improvement of the present invention, the anti-rotation wing mechanism includes a shaft and a rotary wing arranged on the shaft, the shaft is arranged on the outer wall of the implant core; the rotary wing is spirally arranged along the outer wall of the shaft, and the edge of the rotary wing is pointed The gradient body mechanism, the outer wall of the rotating wing is arc-shaped.

As a further improvement of the present invention, when the implant core rotates in one direction, the rotary wing can contact the cavity of the implant and extend out of the outlet of the rotary wing to form a locked state; when the implant core rotates in the other direction, the rotary wing It rotates with the implant core and does not lock with the implant cavity.

As a further improvement of the present invention, the outlet of the rotary wing penetrates the inner and outer walls of the implant, and the outlet of the rotary wing forms an included angle with the radial direction of the implant.

As a further improvement of the present invention, the upper end of the implant core is provided with a concave cavity, and the concave cavity includes a threaded section for cooperating with the abutment screw and a wrench operating section for cooperating with an operating wrench to realize rotation, The threaded section is arranged on the upper end of the wrench operating section.

As a further improvement of the present invention, the operating section of the wrench has a polygonal structure; the operating wrench includes an operating head and an operating rod connected with the operating head, and the operating head is a polygonal structure matched with the operating section of the wrench.

As a further improvement of the present invention, the implant inner core is a regular polygon structure, and the anti-rotation wing mechanism is arranged on the vertex of the regular polygon.

As a further improvement of the present invention, the anti-rotation wing mechanism is provided with multiple layers on the implant inner core, and each layer is provided with at least one anti-rotation wing mechanism; the plurality of anti-rotation wing mechanisms are evenly arranged on the same circumferential direction of the implant inner core. on flat surface.

As a further improvement of the present invention, the surface of the implant is treated by sandblasting and acid etching.

As a further improvement of the present invention, a rotary table is provided on the bottom of the cavity of the implant, and the bottom of the core of the implant is installed on the rotary table.

Compared with the prior art, the present invention has the following advantages:

The oral implant system with anti-rotation, anti-dislocation and prevention of abutment screw breakage provided by the present invention is used in conjunction with bone extrusion. To achieve the purpose of increasing the osseointegration area while preventing the rotation and dislocation of the implant. At the same time, when the upper mechanism is repaired in the later stage, the abutment screw that matches the inner diameter of the implant is inserted into the switch of the anti-rotation wing mechanism, thereby balancing the lateral force of the abutment screw during the stressing process of the crown, and then To achieve the effect of preventing abutment screw breakage. The oral implant system is mainly used for patients with insufficient alveolar bone density in the edentulous area. By increasing the implant-bone contact area, the initial stability is increased to prevent implant dislocation; the antagonism of the anti-rotating wing mechanism prevents implantation. body rotation.

Further, the lower cavity of the implant core prevents it from breaking due to lateral force by providing a fulcrum under the abutment screw.

Further, the implant provided by the present invention adopts an octagonal internal connection method between the implant and the abutment, the abutment is fixed by the abutment screw, and the surface of the implant is treated with sandblasting and acid etching, which increases the surface hydrophilicity of the implant and is beneficial to bone. combine.

Description of drawings

FIG. 1 is a schematic diagram of the oral implant mechanism of the present invention.

FIG. 2 is an internal structure diagram of the present invention.

3 is a cross-sectional view of the anti-rotation wing mechanism when it is not rotated out.

FIG. 4 is a cross-sectional view of the anti-rotation wing mechanism after being rotated out.

FIG. 5 is a partial enlarged view of the section after the anti-rotation wing mechanism is rotated out.

Fig. 6 is a three-dimensional structural diagram of the lower 1/3 of the implant after the anti-rotation wing mechanism is rotated out.

FIG. 7 is a schematic diagram of the mechanism of the screwdriver for controlling the rotary wing.

Figure 8 is the overall three-dimensional view after the repair is completed.

Among them, 1 is the crown; 2 is the abutment; 3 is the implant; 4 is the anti-rotation wing mechanism; 5 is the rotary table; 6 is the implant cavity; 7 is the abutment screw; 8 is the implant core; Wing outlet; 10 is the jaw; 11 is the concave cavity; 12 is the tip of the rotating wing; 13 is the operating head; 14 is the operating rod.

Detailed ways

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the specific implementation of the present invention will be further described below with reference to the accompanying drawings and embodiments, which are to explain rather than limit the present invention.

As shown in FIG. 1 to FIG. 4, an anti-rotation and anti-dislocation oral implant system of the present invention includes an abutment 2, an implant 3 and an abutment screw 7, and the abutment 2 is arranged on the implant. 3 and fixed by abutment screws 7;

The implant 3 includes an implant inner cavity 6 and an implant inner core 8 arranged inside the implant inner cavity 6. The implant inner core 8 is provided with an anti-rotation wing mechanism 4, and the implant 3 is provided with an anti-rotation wing mechanism 4 for extending and extending. Lock the rotor outlet 9 of the implant.

Wherein, the anti-rotation wing mechanism 4 includes a shaft and a rotary wing 12 arranged on the shaft, and the shaft is arranged on the outer wall of the implant core 8; the rotary wing 12 is spirally arranged along the outer wall of the shaft, and the rotary wing 12 is a gradient body with a pointed edge mechanism, the outer wall of the rotary wing 12 is arc-shaped.

The bottom of the implant cavity 6 is provided with a rotary table 5 , and the bottom of the implant core 8 is installed on the rotary table 5 . Reduce the frictional force generated by the rotation of the implant core 8.

As shown in Figures 3 and 4, the action principle of the anti-rotation wing mechanism is: when the implant core 8 rotates in one direction, the rotary wing 12 can contact the implant cavity 6 and extend out of the rotary wing outlet 9 to form a locked state, By increasing the implant-bone contact area, its initial stability is increased to prevent implant dislocation; when the implant core 8 rotates in the other direction, the rotating wing 12 rotates with the implant core 8 and is not locked with the implant cavity 6 .

As shown in FIGS. 5 and 6 , the rotary wing outlet 9 penetrates the inner and outer walls of the implant 3 , and the rotary wing outlet 9 and the implant 3 radially form an included angle α. The setting of the included angle enables the rotary wing 12 to easily enter the rotary wing outlet 9 after the implant core 8 is rotated, thereby improving the locking accuracy.

The upper end of the implant core 8 is provided with a concave cavity 11. The concave cavity 11 includes a threaded section for connecting with the abutment screw 7 and a wrench operating section for cooperating with an operating wrench to achieve rotation. The threaded section is provided with At the upper end of the wrench operating section, the wrench operating section has a polygonal structure.

As shown in FIG. 7 , a schematic diagram of the mechanism of operating the wrench, the operating wrench includes an operating head 13 and an operating rod 14 connected with the operating head 13 , and the operating head 13 is a polygonal structure that cooperates with the operating section of the wrench. A regular hexagonal structure is preferred.

The implant inner core 8 has a regular polygonal structure, preferably a regular quadrilateral structure. Four anti-rotation wing mechanisms 4 are provided on the vertices of the regular quadrilateral.

Preferably, the anti-rotation wing mechanism 4 is provided with multiple layers on the implant inner core 8, and each layer is provided with at least one anti-rotation wing mechanism; the plurality of anti-rotation wing mechanisms are evenly arranged on the same plane in the circumferential direction of the implant inner core 8 superior. Improve the locking force of the anti-rotation wing mechanism.

Among them, the connection between the implant neck and the abutment adopts an octagonal internal connection, and the abutment screw is retained. The implant body can be cylindrical or tapered, with or without threads on the surface; if the implant surface is threaded, a self-tapping thread design is available. The surface of the implant is treated with sandblasting and acid etching to increase the surface hydrophilicity and promote osseointegration; the anti-rotation wing mechanism adopts the same material and treatment method as the implant.

The anti-rotation wing mechanism shown in the present invention is distributed in the lower 1/3 part of the implant, and each group has a total of 4 anti-rotation wing mechanisms. In the actual application process, the distribution of the anti-rotation wing mechanism and the number of each group can be adjusted according to the situation.

The installation method of the anti-rotation and anti-dislocation oral implant of the present invention comprises the following steps:

1. Gradually prepare the planting cavity with a split drill of the corresponding specification;

2. Insert the implant and increase the force to 40-45N, so that the top edge of the implant is flush with the bone surface;

3. Use the wrench to rotate the internal mechanism of the implant, so that the anti-rotation wing mechanism protrudes from the inside of the implant;

4. Install the cover nut.

Example

As shown in Figures 1 to 7, the present invention adopts pure titanium material to machine to obtain the implant, the outer is cylindrical or conical, the diameter is 4.0mm, 4.5mm, 5.0mm, 5.5mm, and the length is 8.0mm. , 9.0mm, 10.0mm, 11.0mm, 12.0mm five specifications.

As shown in Figures 3 and 4, the anti-rotation wing is located inside the implant before the implant is in place. After the implant is in place, use the wrench in Figure 7 to rotate the internal mechanism to rotate out and lock the anti-rotation wing.

The upper end of the implant core 8 is provided with a concave cavity 11. The concave cavity 11 includes a threaded section for connecting with the abutment screw 7 and a wrench operating section for cooperating with an operating wrench to achieve rotation. The threaded section is provided with At the upper end of the wrench operating section, the wrench operating section has a polygonal structure. When the upper mechanism is repaired, the conical abutment screw can enter the switch slot of the anti-rotation wing to provide a fulcrum.

As shown in Fig. 3 and Fig. 4, the implant prepared according to the present invention can be unthreaded or threaded, and if a thread is prepared, it can be a self-tapping thread with a diameter of 1.5-2.5 mm and a length of 3-5 mm; It can be a standard thread with a diameter of 2 to 3 mm and a length of 2 to 5 mm. Figure 8 is the overall three-dimensional view after the repair is completed.

The implant of the invention is a cylindrical or conical implant, the outer surface of the implant is provided with or without threads, the abutment is connected with the implant through abutment screws, and the crown is fixed above. It is used to prevent the rotation and dislocation of the implant when the remaining alveolar bone density is poor, and at the same time, it can achieve a certain function of preventing the fracture of the abutment screw.

The implant implantation method provided by the present invention is as follows: after the implant cavity is completed and the implant is implanted, a special screwdriver is used to extend into the implant, and the pure titanium material hidden inside the implant is removed by rotating the screwdriver. The anti-rotation wing mechanism protrudes from the inside of the implant, thereby improving the initial stability of the implant by increasing the implant-bone contact area, and achieving the anti-rotation and anti-dislocation function of the implant through the antagonism of the anti-rotation wing mechanism. When the abutment is installed, the abutment screw with a matched diameter is inserted into the screw hole of the anti-rotation wing mechanism to achieve the function of resisting the breakage of the abutment screw. The implant placement torque is the same as the conventional implant, which is 45NCM.

The above-mentioned specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and cannot be identified as specific embodiments of the present invention. Limited to this, any simple deductions or substitutions made within the spirit and principles of the present invention shall be deemed to belong to the scope of patent protection determined by the submitted claims of the present invention.

Although the specific embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative, instructive, and not restrictive. Under the enlightenment of this specification, those skilled in the art can also make various forms without departing from the scope of protection of the claims of the present invention, which all belong to the protection of the present invention.

Claims (9)

1. An anti-rotation anti-dislocation oral implant system, comprising: comprises a base platform (2), an implant body (3) and a base platform screw (7), wherein the base platform (2) is arranged on the implant body (3) and is fixed through the base platform screw (7);

the implant (3) comprises an implant inner cavity (6) and an implant inner core (8) arranged in the implant inner cavity (6), wherein an anti-rotation wing mechanism (4) is arranged on the implant inner core (8), and a rotation wing outlet (9) used for extending out of the anti-rotation wing mechanism (4) and locking the implant is arranged on the implant (3);

the anti-rotation wing mechanism (4) comprises a shaft and a rotation wing (12) arranged on the shaft, and the shaft is arranged on the outer wall of the implant inner core (8); the rotary wing (12) is spirally arranged along the outer wall of the shaft, the rotary wing (12) is a gradual change body mechanism with a pointed edge, and the outer wall of the rotary wing (12) is arc-shaped.

2. The anti-rotational anti-dislocation oral implant system as claimed in claim 1, wherein: when the implant inner core (8) rotates towards one direction, the rotary wing (12) can be in contact with the implant inner cavity (6) and extend out of the rotary wing outlet (9) to form a locking state; when the implant inner core (8) rotates towards the other direction, the rotating wing (12) rotates along with the implant inner core (8) and is not locked with the implant inner cavity (6).

3. The anti-rotational anti-dislocation oral implant system according to claim 1 or 2, wherein: the outlet (9) of the rotating wing penetrates through the inner wall and the outer wall of the implant (3), and an included angle is formed between the outlet (9) of the rotating wing and the implant (3) in the radial direction.

4. The anti-rotational anti-dislocation oral implant system according to claim 1 or 2, wherein: implant inner core (8) upper end be provided with down cavity (11), lower cavity (11) including be used for with base station screw (7) cooperation be connected the screw thread section with be used for with the operation spanner cooperation realize pivoted spanner operation section, the screw thread section sets up in spanner operation section upper end.

5. The anti-rotational anti-dislocation oral implant system according to claim 4, wherein: the wrench operation section is of a polygonal structure; the operation spanner include operating head (13) and operating rod (14) be connected with operating head (13), operating head (13) be with spanner operation section complex polygon structure.

6. The anti-rotational anti-dislocation oral implant system as claimed in claim 1, wherein: the implant inner core (8) is of a regular polygon structure, and the anti-rotation wing mechanism (4) is arranged on the vertex of the regular polygon.

7. The anti-rotational anti-dislocation oral implant system as claimed in claim 1, wherein: the anti-rotation wing mechanism (4) is provided with a plurality of layers on the implant inner core (8), and each layer is provided with at least one anti-rotation wing mechanism; the anti-rotation wing mechanisms are uniformly arranged on the same circumferential plane of the implant inner core (8).

8. The anti-rotational anti-dislocation oral implant system as claimed in claim 1, wherein: the surface of the implant (3) is treated by sand blasting and acid etching.

9. The anti-rotational anti-dislocation oral implant system as claimed in claim 1, wherein: the bottom of the implant inner cavity (6) is provided with a rotating platform (5), and the bottom of the implant inner core (8) is arranged on the rotating platform (5).

Images