阅读说明：本技术 一种内膨胀式仿牙根 (Inner expansion type tooth root imitation ) 是由 张春雨 李敬 陈贤帅 于 2021-07-14 设计创作，主要内容包括：本发明涉及医疗器械技术领域,公开了一种内膨胀式仿牙根,其包括植体、基台和连接装置,连接装置包括套筒、膨胀件和螺杆,植体设有安装孔,膨胀件和套筒依次装配于安装孔中,基台装配于套筒中,基台设有第一通孔,套筒设有第二通孔,膨胀件设有与螺杆相匹配的内螺纹,螺杆穿过第一通孔和第二通孔并与膨胀件螺纹连接,套筒的底部还设有多个弹性片,弹性片可在膨胀件的支撑下向外张开。与现有技术相比,该内膨胀式仿牙根结构简单可靠、连接效果好。(The invention relates to the technical field of medical instruments, and discloses an inner expansion type tooth root simulation device which comprises an implant body, a base station and a connecting device, wherein the connecting device comprises a sleeve, an expansion part and a screw rod, the implant body is provided with a mounting hole, the expansion part and the sleeve are sequentially assembled in the mounting hole, the base station is assembled in the sleeve, the base station is provided with a first through hole, the sleeve is provided with a second through hole, the expansion part is provided with an internal thread matched with the screw rod, the screw rod penetrates through the first through hole and the second through hole and is in threaded connection with the expansion part, the bottom of the sleeve is further provided with a plurality of elastic sheets, and the elastic sheets can be outwards expanded under the support of the expansion part. Compared with the prior art, the inner expansion type artificial tooth root has simple and reliable structure and good connection effect.)

1. An inner expansion type tooth root imitation device is characterized by comprising an implant body, a base station and a connecting device for connecting the implant body and the base station, wherein the connecting device comprises a sleeve, an expansion piece and a screw rod, a mounting hole is formed in the middle of the implant body, the expansion piece and the sleeve are sequentially assembled in the mounting hole, the base station is assembled in the sleeve, a first through hole for the screw rod to pass through is formed in the middle of the base station, a second through hole for the screw rod to pass through is formed in the middle of the sleeve, an internal thread matched with the screw rod is formed in the expansion piece, the screw rod passes through the first through hole and the second through hole and is in threaded connection with the expansion piece, the expansion piece is arranged in a circular truncated cone shape, the diameter of the bottom of the expansion piece is the same as that of the mounting hole, the diameter of the top of the expansion piece is the same as that of the inner diameter of the sleeve, and the diameter of the bottom of, the bottom of the sleeve is provided with a plurality of elastic sheets which can be expanded outwards under the support of the expansion piece.

2. The internal expansion type artificial tooth root according to claim 1, wherein a hexagonal installation groove is formed in the top of the sleeve, and a hexagonal boss matched with the installation groove is formed in the abutment.

3. The internal expansion type artificial tooth root according to claim 1, wherein the bottom of the mounting hole is cylindrically arranged.

4. The internal expansion type artificial tooth root according to claim 1, wherein the top of the mounting hole is arranged in a truncated cone shape.

5. The internal expansion type artificial tooth root according to claim 1, wherein the implant body and the abutment are manufactured by a 3D printing technology.

Technical Field

The invention relates to the technical field of medical instruments, in particular to an inner expansion type tooth root imitation device.

Background

The dental implant is a component which is implanted into bone tissues to support the upper dental prosthesis to bear the chewing force, and the artificial tooth root for supporting the prosthesis can be obtained by adopting an implant implantation method under the condition of dentition defect. The combination degree of the implant after being implanted and the alveolar bone is an important index for judging the effect of the implant operation, and the combination degree is mainly expressed by the growth degree of bone tissues on the surface of the implant and the stability of the implant in the alveolar bone. The implant is connected with the alveolar bone mainly through external threads in the prior art, internal threads need to be tapped on the alveolar bone by a drill bit in the process of an implantation operation, and the connection mode of a base station and the implant in the implant system mainly adopts the connection mode of Morse taper and a central screw rod so as to achieve the sealing and stable connection effect.

The mode that current adoption threaded connection plants the body is comparatively loaded down with trivial details in operation process, need utilize the drill bit operation that increases the diameter step by step just can generate the screw hole that is fit for the implant and implants many times, and the profile of tooth closed angle of screw thread produces stress concentration easily simultaneously, and there is the hidden danger of fracture inefficacy in the implant.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide an inner expansion type artificial tooth root which has the advantages of simple and reliable structure, excellent connection effect and the like.

Based on the above, the invention provides an inner expansion type artificial tooth root, which comprises an implant body, a base station and a connecting device for connecting the implant body and the base station, wherein the connecting device comprises a sleeve, an expansion piece and a screw rod, the middle part of the implant body is provided with a mounting hole, the expansion piece and the sleeve are sequentially assembled in the mounting hole, the base station is assembled in the sleeve, the middle part of the base station is provided with a first through hole for the screw rod to pass through, the middle part of the sleeve is provided with a second through hole for the screw rod to pass through, the expansion piece is provided with an internal thread matched with the screw rod, the screw rod passes through the first through hole and the second through hole and is in threaded connection with the expansion piece, the expansion piece is arranged in a circular truncated cone shape, the diameter of the bottom of the expansion piece is the same as that of the mounting hole, the diameter of the top of the expansion piece is the same as that of the inner diameter of the sleeve, and the diameter of the bottom of the expansion piece is larger than that of the top of the expansion piece, the bottom of the sleeve is provided with a plurality of elastic sheets which can be expanded outwards under the support of the expansion piece.

In some embodiments of the present application, a hexagonal mounting groove is formed in the top of the sleeve, and a hexagonal boss matched with the mounting groove is formed on the base platform.

In some embodiments of the present application, the bottom of the mounting hole is cylindrically configured.

In some embodiments of the present application, the top of the mounting hole is disposed in a circular truncated cone shape.

In some embodiments of the present application, the implant and the abutment are made using 3D printing techniques.

The embodiment of the invention provides an inner expansion type artificial tooth root, which has the following beneficial effects compared with the prior art:

the invention provides an inner expansion type artificial tooth root which comprises an implant body, a base station and a connecting device for connecting the implant body and the base station, wherein the connecting device comprises an expansion piece, a sleeve and a screw rod, the implant body is provided with a mounting hole, the expansion piece and the sleeve are sequentially arranged in the mounting hole, and the screw rod penetrates through the base station and the sleeve to be in threaded connection with the expansion piece. Before the operation is implanted to the implant, put into the mounting hole in proper order with inflation piece and sleeve earlier, put into the sleeve with the base station, screw rod is twisted to first through-hole through the base station afterwards, along with the twist of screw rod, inflation piece and screw rod contact and with screw rod threaded connection, continue to twist the screw rod this moment, inflation piece moves down at the twisting of screw rod and lasts to rise, the top of inflation piece at first contacts with the sleeve and inserts in the sleeve, along with the bottom of the rising inflation piece leans on the elastic sheet of sleeve lower extreme gradually, because the bottom diameter of inflation piece is greater than the top diameter, the elastic sheet supports to expand all around under the support of inflation piece bottom, the elastic sheet after expanding supports and leans on the implant, and then realize the fixed connection of sleeve and implant, the screw rod wears base station and sleeve together, the fixed connection of base station and implant has been realized simultaneously. Therefore, the inner expansion type tooth root imitation can realize the quick connection of the abutment and the implant, and has the advantages of ingenious structural design and good connection effect; in addition, the implant is made by adopting a 3D printing technology, has high similarity with the tooth root of a patient and good tight combination degree with the alveolar bone, so that the implant has no obvious stress concentration in the occlusion process, the biomechanical fusion of the implant in the later period is improved by the design, and the operation difficulty and risk of the implantation operation are also reduced.

Drawings

FIG. 1 is an exploded view of an inner expanding artificial tooth root according to an embodiment of the invention;

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

fig. 3 is an assembly schematic of an embodiment of the invention.

In the figure, 1, an implant; 11. mounting holes; 2. a base station; 3. a sleeve; 31. an elastic sheet; 4. an expansion member; 5. a screw.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

It should be understood that the terms "front", "rear", and the like are used herein to describe various information, but the information should not be limited to these terms, which are used only to distinguish one type of information from another. For example, "front" information may also be referred to as "rear" information, and "rear" information may also be referred to as "front" information without departing from the scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides an inner expansion type artificial tooth root, which includes an implant 1, a base 2 and a connecting device for connecting the implant and the base, specifically, the connecting device includes a sleeve 3, an expansion part 4 and a screw 5, a mounting hole 11 is provided in the middle of the implant 1, the expansion part 4 and the sleeve 3 are sequentially assembled in the mounting hole 11, the base 2 is assembled in the sleeve 3, a first through hole for the screw 5 to pass through is provided in the middle of the base 2, a second through hole for the screw 5 to pass through is provided in the middle of the sleeve 3, the expansion part 4 is provided with an internal thread matching with the screw 5, and the screw 5 passes through the first through hole and the second through hole and is in threaded connection with the expansion part 4. The expansion piece 4 is arranged in a circular truncated cone shape, the bottom diameter of the expansion piece 4 is the same as the diameter of the mounting hole 11, the top diameter of the expansion piece 4 is the same as the inner diameter of the sleeve 3, therefore, the bottom diameter of the expansion piece 4 is larger than the top diameter of the expansion piece 4, and meanwhile, the bottom of the sleeve 3 is also provided with a plurality of elastic sheets 31, and the elastic sheets 31 can be outwards expanded under the support of the expansion piece 4.

Based on the structure, before the implant 1 is implanted into an operation, the expansion piece 4 and the sleeve 3 are sequentially placed into the mounting hole 11, the base table 2 is placed into the sleeve 3, the screw 5 is screwed in through the first through hole of the base table 2, the expansion piece 4 is in contact with the screw 5 and is in threaded connection with the screw 5 along with the screwing of the screw 5, the screw 5 is continuously screwed at the moment, the expansion piece 4 continuously rises under the screwing of the screw 5, the top of the expansion piece 4 is firstly in contact with the sleeve 3 and is inserted into the sleeve 3, the bottom of the expansion piece 4 gradually abuts against the elastic sheet 31 at the lower end of the sleeve 3 along with the rising of the expansion piece 4, as the diameter of the bottom of the expansion piece 4 is larger than that of the top, the elastic sheet 31 is unfolded downwards and outwards against the bottom of the expansion piece 4, the unfolded elastic sheet 31 abuts against the implant 1, so that the sleeve 3 is fixedly connected with the implant 1, and the base table 2 and the sleeve 3 are penetrated together by the screw 5, meanwhile, the abutment 2 is fixedly connected with the implant 1. Therefore, the inner expansion type artificial tooth root can realize the quick connection of the abutment 2 and the implant 1, and has ingenious structural design and good connection effect; in addition, the implant 1 is made by adopting a 3D printing technology, has high similarity with the tooth root of a patient and good tight combination degree with the alveolar bone, so that the implant 1 has no obvious stress concentration in the occlusion process, the biomechanical fusion of the implant in the later period is improved by the design, and the operation difficulty and risk of the implantation operation are also reduced.

Optionally, in some embodiments of the present application, the top of the sleeve 3 is provided with a hexagonal mounting groove, the base station 2 is provided with a hexagonal boss matched with the mounting groove, the mounting groove and the boss are connected by means of morse taper, and this setting mode can further improve the connection strength between the base station 2 and the sleeve 3, thereby ensuring the connection effect.

Further, as for the mounting hole 11 of the present application, the whole body is arranged in a cylindrical shape, which facilitates the arrangement of various structures. Of course, the shape of the mounting hole 11 can be optimized in many ways on the premise of ensuring the connection effect. Specifically, in the embodiment of the present invention, the top of the mounting hole 11 is formed in a circular truncated cone shape, and the abutment 2 and the sleeve 3 are also formed in a circular truncated cone shape here, so that the mutual recognition between the sleeve 3 and the implant 1 is facilitated.

Furthermore, the implant 1 and the abutment 2 in the embodiment of the invention are manufactured by adopting a 3D printing technology, the shape of the implant 1 is highly similar to the shape of the tooth root of a patient by means of the 3D printing technology, the bionic degree is high, the tight combination degree of the implant 1 and the alveolar bone can be enhanced compared with the prior thread-shaped structure, and meanwhile, the implant 1 has no obvious stress concentration in the occlusion process.

In summary, the invention provides an inner expansion type tooth root imitation device, which comprises an implant body, a base station and a connecting device, wherein the connecting device comprises a sleeve, an expansion piece and a screw rod, the implant body is provided with a mounting hole, the expansion piece and the sleeve are sequentially assembled in the mounting hole, the base station is assembled in the sleeve, the base station is provided with a first through hole, the sleeve is provided with a second through hole, the expansion piece is provided with an internal thread matched with the screw rod, the screw rod penetrates through the first through hole and the second through hole and is in threaded connection with the expansion piece, the bottom of the sleeve is further provided with a plurality of elastic sheets, and the elastic sheets can be outwards expanded under the support of the expansion piece. Compared with the prior art, the inner expansion type artificial tooth root has simple and reliable structure and good connection effect.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.