Composite structure implant and implant system

Abstract

The utility model relates to the technical field of oral implant teeth, and particularly discloses a composite structure implant and an implant system. The implant with the composite structure comprises a metal part and a zirconium oxide part wrapping the outer side of the metal part, a cavity is formed in the metal part and used for being connected with a base table and a connecting screw in a matched mode. The thickness of each part of the zirconium oxide part is uniform, and the outer side of the zirconium oxide part is connected with an alveolar bone. Through the design of a composite structure, the machining of an internal complex structure can be adapted, and the requirement for external attractiveness can be met; in addition, the utility model further discloses an implant system, the implant system is composed of the composite structure implant, the abutment, the connecting screw and the spring, through the design of the structure and the connection relation, the fastening connection of the implant system is guaranteed, and the implant system has better overall strength.

Description

Technical Field

[0001] The present application relates to the technical field of oral dental implants, and in particular to a composite structure implant and an implant system. Background Art

[0002] Implants, commonly known as artificial tooth roots, are an important part that replaces natural teeth in the jaw to perform the chewing function. They usually form an implant system together with abutments, screws, crowns, etc., which can restore the function and beauty of missing teeth while maintaining oral health and stability.

[0003] Implants are usually made of biocompatible materials that can form a stable bone bond with bone tissue. Currently, the most commonly used material for implants is pure titanium. However, for pure titanium implants, its metallic color can cause aesthetic problems when the implant leaks out in the patient's later years. Studies have found that zirconia material is also a good biocompatible material, and its color is similar to that of natural tooth roots and has strong aesthetics. However, since implants are small in size, complex in structure (especially their inner surface must be designed with anti-rotation, channels, internal threads and other structures that match the base and screws), and have high precision requirements, and zirconia materials are hard and difficult to process, and are highly sensitive to defects. They are prone to cracks and implant breakage due to processing processes such as mechanical cutting. Therefore, there are few pure zirconia implants on the market. In summary, providing a new composite structure implant to solve the above problems is an urgent need in the current market. Utility Model Content

[0004] The purpose of this application is to provide a composite structure implant and an implant system that can solve the problems described in the background technology.

[0005] The embodiments of the present application can be implemented through the following technical solutions:

[0006] A composite structure implant comprises a metal part and a zirconium oxide part wrapped around the outside of the metal part; a cavity is opened inside the metal part, and the cavity is used to cooperate with the base and connecting screws for connection; the zirconium oxide part has a uniform thickness at all places, and its outer side is used to connect to the alveolar bone.

[0007] Furthermore, the top of the metal part is flush with the top of the zirconium oxide part, and the metal part and the zirconium oxide part are connected by sintering and welding.

[0008] Furthermore, the thickness of the zirconia portion is 0.4 to 2.0 mm.

[0009] Furthermore, the zirconia portion includes a fixed platform section, a main body section and a cone section arranged from top to bottom, the outer sides of the main body section and the cone section are provided with external threads, and the outer side of the cone section is provided with a self-tapping groove.

[0010] Furthermore, the cavity includes a first connecting hole and a second connecting hole arranged in sequence from top to bottom, the first connecting hole is a through hole with a cross-section shaped like a plum blossom or a regular polygon, and the second connecting hole is a blind hole structure with an internal thread provided on its circumferential side wall.

[0011] Furthermore, the metal part is made of any one of nickel-chromium alloy, cobalt-chromium alloy, titanium alloy, pure titanium, and gold alloy.

[0012] An implant system comprises the implant described in any one of the above items, a connecting screw and a base, the base comprising a crown connecting section, a gingival section and a first connecting protrusion arranged from top to bottom, the interior of the base is a through-hole structure, the internal cavity of the metal part comprises a first connecting hole and a second connecting hole, during assembly, the first connecting protrusion is matched and connected with the first connecting hole, and the connecting screw passes through the through-hole inside the base and connects with the cavity inside the metal part to achieve a fixed connection between the base and the implant.

[0013] Furthermore, the through-hole structure inside the base includes a first through-hole and a second through-hole, and the diameter of the first through-hole is larger than the diameter of the second through-hole.

[0014] Furthermore, it also includes a spring, which is sleeved on the connecting screw and located in the space formed by the connecting screw and the first connecting hole.

[0015] Furthermore, the top of the spring abuts against the bottom surface of the head of the connecting screw, and the bottom of the spring abuts against the lower surface of the first connecting hole, and the natural length of the spring is greater than the height of the first connecting hole.

[0016] The embodiments of the present application provide a composite structure implant and implant system that have at least the following beneficial effects: the implant of the present application is composed of a composite structure consisting of an internal metal part and an external zirconia part. The internal metal processing is convenient and suitable for making complex internal structures, and the external zirconia also meets the requirements of aesthetics; in addition, the thickness of the external zirconia part is uniform, which can make the force uniform everywhere, reduce stress concentration, and further improve the overall strength of the implant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the implant structure according to an embodiment of the present application;

[0018] Figure 2 This is an exploded schematic diagram of the implant structure according to an embodiment of the present application;

[0019] Figure 3 A side view and an AA-cross-sectional view of the implant structure according to an embodiment of the present application;

[0020] Figure 4 A top view and a BB-cross-sectional view of the implant structure according to an embodiment of the present application;

[0021] Figure 5 This is an exploded schematic diagram of the overall structure of an implant system according to another embodiment of the present application;

[0022] Figure 6 A cross-sectional view of a base according to another embodiment of the present application;

[0023] Figure 7 A cross-sectional view of an implant system according to another embodiment of the present application;

[0024] Figure 8 A cross-sectional view of an implant system according to another embodiment of the present application;

[0025] Figure 9 for Figure 8 A partial enlarged schematic diagram of the structure in the middle rectangular frame;

[0026] Numbers in the figure

[0027] Implant 1, metal portion 11, zirconia portion 12, fixed platform segment 121, main body segment 122, cone segment 123, self-tapping groove 1231, external thread 124, first connecting hole 131, second connecting hole 132, connecting screw 2, abutment 3, crown connecting segment 31, gingival segment 32, first connecting protrusion 33, first through hole 341, second through hole 342, spring 4; DETAILED DESCRIPTION

[0028] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0029] In addition, various components in the drawings are enlarged or reduced in size for ease of understanding, but this is not intended to limit the scope of protection of this application.

[0030] Words importing the singular include the plural and vice versa.

[0031] In the description of the embodiments of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the products of the embodiments of the present application are usually placed when in use, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, in the description of the present application, in order to distinguish different units, words such as first and second are used in this specification, but these are not limited by the order of manufacture, nor can they be understood as indicating or implying relative importance. Their names may be different in the detailed description and claims of the present application.

[0032] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between the two components. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.

[0033] Figures 1 to 4 The overall structure, explosion diagram, cross-sectional view, etc. of the implant provided by an embodiment of the present application are respectively shown. As shown in the figure, the implant 1 includes an inner metal part 11 and a zirconia part 12 wrapped around the outside of the metal part 11. The top of the metal part 11 is flush with the top of the zirconia part 12. The outer side surface of the metal part 11 and the inner side surface of the zirconia part 12 are sintered and fused. The outer contour of the metal part 11 is adapted to the outer contour of the zirconia part 12, so that the thickness of the zirconia part 12 is uniform at all locations, which can make the zirconia part evenly stressed at all locations, avoiding cracks or even breakage due to concentrated stress at fragile locations; in some preferred embodiments, the thickness of the zirconia part 12 is preferably 0.4 to 2.0 mm.

[0034] like Figure 3 and Figure 4 As shown, a cavity is opened inside the metal part 11, the upper part of which is connected to the outside world and the lower part is closed, and is used to connect with the connecting screw 2 and the base 3. The cavity includes a first connecting hole 131 and a second connecting hole 132 arranged in sequence from top to bottom. The first connecting hole 131 is a through hole with a cross-section shaped like a hexagonal plum blossom, which is used to connect with the base 3 to limit the position and prevent the base 3 and the implant 1 from rotating relative to each other. It is conceivable that the cross-section of the first connecting hole 131 can also be a pentagonal, square, triangular or more than hexagonal plum blossom. In some other specific embodiments, the cross-section of the first connecting hole 131 can also be a regular polygon; the second connecting hole 132 is a blind hole structure, and its circumferential side wall is provided with an internal thread for matching with the external thread of the connecting screw 2 for connection.

[0035] The zirconia part 12 includes a fixed platform section 121, a main body section 122 and a cone section 123 arranged in sequence from top to bottom, wherein the fixed platform section 121 is an inverted conical frustum structure, which can reduce the pressure on the cortical bone and avoid cortical bone absorption; the main body section 122 and the cone section 123 are both provided with external threads 124 on the outer periphery for connecting with the alveolar bone.

[0036] In some preferred embodiments, the cone section 123 is further provided with a self-tapping groove 1231. Figure 1In the embodiment shown, the self-tapping groove 1231 is a vertical groove, which extends in the vertical direction to the bottom end of the cone section 123, so that the implant has self-tapping performance and can be directly screwed into the connecting hole without the need for a tapping step; in some other embodiments, the self-tapping groove 1231 can also be an oblique groove, a spiral groove, etc.

[0037] The external structure of the zirconia part 12 is described in detail above. The external structure of the metal part 11 is similar to the external structure of the zirconia part 12, and also includes a fixed platform section, a main body section, a cone section, and an external thread and a self-tapping groove structure arranged from top to bottom. For details, please refer to the external structure of the zirconia part 12, which will not be repeated here.

[0038] In some specific embodiments, the metal part 11 may be made of any one of nickel-chromium alloy, cobalt-chromium alloy, titanium alloy, pure titanium, and gold alloy.

[0039] Figures 5 to 7 Exploded views and cross-sectional views of the overall structure of an implant system provided in another embodiment of the present application are shown. As can be seen from the figure, the implant system includes the implant 1, the connecting screw 2, and the abutment 3 as described in any of the above embodiments, which are coaxially arranged. The abutment 3 includes a crown connecting section 31, a gingival section 32, and a first connecting protrusion 33 coaxially arranged from top to bottom. The interior of the abutment 3 is a through-hole structure, including a first through-hole 341 and a second through-hole 342. The diameter of the first through-hole 341 is larger than the diameter of the second through-hole 342.

[0040] Among them, the crown connecting section 31 is a frustum-shaped structure, which is convenient for the production and installation of the crown; the gingival section 32 is a frustum-shaped structure with an inverted taper, and its bottom end face abuts against the top end face of the fixed platform section 121 of the implant 1; the first connecting protrusion 33 is a protrusion structure that matches the first connecting hole 131, such as Figure 5 In the embodiment shown, it is a hexagonal plum blossom-shaped protrusion structure, which can ensure a stable connection between the implant 1 and the abutment 3 and improve the anti-rotation effect;

[0041] The connecting screw 2 is used to connect the implant 1 and the base 3, and includes a head and a threaded part, wherein the head cooperates with the first through hole 341 in the base 3, and the threaded part passes through the second through hole 342 in the base 3 and the first connecting hole 131 in the implant 1, and is connected to the second connecting hole 132 in the implant 1.

[0042] In some preferred embodiments, the head of the connecting screw 2 is provided with a hexagonal cylindrical head to facilitate operation with a tool.

[0043] In some preferred embodiments, Figure 8 and Figure 9As shown, the implant system also includes a spring 4, which is located in the cavity formed by the implant 1, the connecting screw 2 and the base 3. Specifically, it is sleeved on the connecting screw 2 and is located in the space formed by the connecting screw 2 and the first connecting hole 131. The top of the spring 4 abuts against the bottom surface of the head of the connecting screw 2, and the bottom of the spring abuts against the lower surface of the first connecting hole 131. The natural length of the spring 4 is greater than the height of the first connecting hole 131. By adding a spring structure and assembling the spring in a compressed state, the impact caused by the bite force can be buffered, the stress level at the connection between the components can be effectively reduced, and the overall strength of the implant system can be improved.

[0044] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A composite structure implant, characterized in that: include: A metal portion (11) and a zirconium oxide portion (12) surrounding the metal portion (11); A cavity (13) is formed inside the metal part (11), and the cavity (13) is used to cooperate with the base and the connecting screws for connection; The thickness of the zirconium oxide part (12) is uniform at all locations, and the outer side thereof is used for connection with the alveolar bone.

2. The composite structure implant according to claim 1, characterized in that: The top end of the metal part (11) is flush with the top end of the zirconium oxide part (12), and the metal part (11) and the zirconium oxide part (12) are connected by sintering and welding.

3. The composite structure implant according to claim 1, characterized in that: The thickness of the zirconia portion (12) is 0.4 to 2.0 mm.

4. The composite structure implant according to claim 1, characterized in that: The zirconia portion (12) comprises a fixed platform section (121), a main section (122) and a cone section (123) arranged from top to bottom, the main section (122) and the cone section (123) are provided with external threads on their outer sides, and the cone section (123) is provided with a self-tapping groove (1231) on its outer side.

5. The composite structure implant according to claim 1, characterized in that: The cavity (13) comprises a first connecting hole (131) and a second connecting hole (132) arranged in sequence from top to bottom, wherein the first connecting hole (131) is a through hole with a cross section shaped like a plum blossom or a regular polygon, and the second connecting hole (132) is a blind hole structure with an internal thread provided on its circumferential side wall.

6. The composite structure implant according to claim 1, characterized in that: The metal part (11) is made of any one of nickel-chromium alloy, cobalt-chromium alloy, titanium alloy, pure titanium and gold alloy.

7. An implant system, characterized in that: The invention comprises an implant, a connecting screw (2) and a base (3) as described in any one of claims 1 to 5, wherein the base (3) comprises a crown connecting section (31), a gingival section (32) and a first connecting protrusion (33) arranged from top to bottom, the interior of the base (3) is a through-hole structure, the internal cavity (13) of the metal part (11) comprises a first connecting hole (131) and a second connecting hole (132), and during assembly, the first connecting protrusion (33) is matched and connected with the first connecting hole (131), and the connecting screw (2) passes through the through-hole inside the base (3) and is connected with the cavity inside the metal part (11) to realize a fixed connection between the base (3) and the implant (1).

8. The implant system according to claim 7, characterized in that The through-hole structure inside the base (3) comprises a first through-hole (341) and a second through-hole (342), and the diameter of the first through-hole (341) is greater than the diameter of the second through-hole (342).

9. The implant system according to claim 7 or 8, characterized in that: It also includes a spring (4), which is sleeved on the connecting screw (2) and located in the space formed by the connecting screw (2) and the first connecting hole (131).

10. The implant system according to claim 9, characterized in that The top of the spring (4) abuts against the bottom surface of the head of the connecting screw (2), and the bottom abuts against the lower surface of the first connecting hole (131). The natural length of the spring (4) is greater than the height of the first connecting hole (131).

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