Personalized abutment

Abstract

The utility model belongs to the technical field of medical equipment, concretely relates to a kind of individualized composite abutment, including abutment ontology, fixed through hole is set in the abutment ontology and is passed through the connecting portion and implant portion set on the abutment ontology, fixed bolt is movably set in the fixed through hole, the hole wall of the fixed through hole is provided with the limiting structure that axial abuts the fixed bolt bolt cap, limiting thread is set in the limiting structure and cooperates with the thread segment of the fixed bolt. Since the nominal diameter of the thread segment of the fixed bolt is greater than the channel of the limiting structure, the fixed bolt will not fall out of either end of the fixed through hole when it is not connected to the implant, and the limiting structure also has a thread matching the threaded end of the bolt, so that the thread segment of the fixed bolt can pass through the limiting structure in a rotating manner to achieve easy disassembly, thereby reducing the manufacturing cost of the abutment.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to a personalized composite base. Background Technology

[0002] Implant abutments are crucial instruments in dental restorations. Their primary function is to connect, support, and retain dental implants placed within the jawbone after tooth loss, similar to the supporting beams in architecture. Based on shape, they can be categorized as conical, cylindrical, and composite abutments; in terms of materials, they include pure titanium, titanium alloy, and all-ceramic abutments. Their core functions include providing mechanical support for the crown, enhancing the retention of the restoration, and maintaining long-term occlusal stability.

[0003] A composite abutment for dental implant restoration disclosed in patent CN220938201U includes an installation part and a connecting part. The installation part is used to connect with the implant and has an installation hole inside. The connecting part includes a connecting surface with a tapered boss. The boss has a threaded hole, and the axis of the threaded hole is set at an angle A with the axis of the installation hole. The top of the boss has a top surface parallel to the connecting surface, and the distance between the top surface and the connecting surface is 2.27 mm. The taper of the boss is 47.7°. This utility model has a simple and ingenious structure. The installation part can match the implant to achieve connection and fixation. The connecting part adopts a universal structure, so that the crown can be matched with a variety of implants of different brands through this abutment, realizing the universality of the crown, facilitating crown restoration for patients, and reducing their treatment costs.

[0004] In the above scheme, although a limiting ring is set in the mounting hole to limit the screw, so that the screw head and thread at both ends of the screw are blocked by the limiting ring and will not fall out of the mounting hole, it raises the question of how to install the screw into the hole, thereby increasing the manufacturing cost of the base. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a personalized composite base that can solve the technical issues described above.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A personalized composite base includes a base body, in which a fixing through hole is provided and passes through a connecting part and an implantation part provided on the base body. A fixing bolt is movably provided in the fixing through hole. A limiting structure is provided on the hole wall of the fixing through hole to axially abut against the bolt cap of the fixing bolt. The limiting structure has a limiting thread that engages with the threaded section of the fixing bolt.

[0008] In the aforementioned personalized composite base, the limiting structure includes a limiting abutment surface and a width limiting guide surface. The limiting abutment surface abuts axially with the cap of the fixing bolt, and the limiting thread is formed on the width limiting guide surface and circumferentially engages with the threaded section of the fixing bolt.

[0009] In the personalized composite base, the limiting structure is concentrically arranged in a ring in the fixed through hole. The end face of the ring is a limiting abutment surface with an inner diameter smaller than that of the fixing bolt cap. The inner wall of the ring is the width limiting guide surface and the limiting thread extends axially.

[0010] In the aforementioned personalized composite base, the limiting structure consists of at least three limiting strips evenly distributed circumferentially on the wall of the fixed through hole. The ends of the limiting strips are limiting abutment surfaces, and the side of the limiting strip closest to the axis is a width limiting guide surface with the limiting thread extending axially.

[0011] In the personalized composite abutment, at least a portion of the threaded section of the fixing bolt extends from one side of the implantation portion through the limiting structure.

[0012] In the aforementioned personalized composite base, a sliding section is provided between the threaded section of the fixing bolt and the bolt cap, and the sliding section slides in contact with the limiting thread.

[0013] In the personalized composite base, the bolt cap of the fixing bolt is clearance-fitted with the wall of the fixing through hole.

[0014] In the aforementioned personalized composite base, the implantation part is provided with a positioning block with a polygonal main body shape, and the threaded section of the fixing bolt extends vertically from the locking abutment surface at one end of the positioning block.

[0015] In the aforementioned personalized composite base, the connecting part is provided with a connecting abutment surface inclined to the fixed through hole, and a connecting platform is provided on the connecting abutment surface. A positioning rod is detachably connected to the platform of the connecting platform.

[0016] In the aforementioned personalized composite base, a connecting through hole is provided in the connecting platform body, the connecting through hole is connected to the fixing through hole, and the positioning rod is threadedly connected to the connecting through hole and at least a portion of it extends into the fixing through hole.

[0017] The advantages of this utility model are:

[0018] The threaded section at the end of the fixing bolt in the fixing through hole is tightened to fit the implant. The bolt head abuts against the limiting structure, thereby fixing the abutment body to the implant. Since the nominal diameter of the threaded section of the fixing bolt is larger than the channel of the limiting structure, the fixing bolt will not fall out from either end of the fixing through hole when it is not connected to the implant. The limiting structure also has threads that match the threaded end of the bolt, so that the threaded section of the fixing bolt can pass through the limiting structure by rotation to achieve the effect of easy disassembly and assembly, thereby reducing the manufacturing cost of the abutment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the base structure of this utility model.

[0022] In the diagram, the base body 1, connecting part 11, connecting abutment surface 111, connecting platform 112, positioning rod 113, connecting through hole 114, implantation part 12, positioning block 121, locking abutment surface 122, fixing through hole 2, limiting structure 21, limiting thread 22, limiting abutment surface 23, width limiting guide surface 24, and fixing bolt 3 are shown. Detailed Implementation

[0023] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings. However, the utility model is not limited to these embodiments.

[0024] Example 1

[0025] like Figures 1-3 As shown, the personalized composite base includes a base body 1. A fixing through hole 2 is provided in the base body 1 and passes through the connecting part 11 and the implantation part 12 provided on the base body 1. A fixing bolt 3 is movably provided in the fixing through hole 2. A limiting structure 21 is provided on the hole wall of the fixing through hole 2 to axially abut against the cap of the fixing bolt 3. A limiting thread 22 is provided in the limiting structure 21 to cooperate with the threaded section of the fixing bolt 3.

[0026] In other words, the threaded end of the fixing bolt in the fixing hole mates with the implant and is tightened. The bolt head abuts against the limiting structure, thus fixing the abutment body to the implant. Because the nominal diameter of the fixing bolt threaded end is larger than the channel of the limiting structure, the fixing bolt will not fall out from either end of the fixing hole when not connected to the implant, preventing the bolt from falling into the oral cavity. The threaded end of the fixing bolt can be rotated through the limiting structure for easy assembly and disassembly, thereby reducing the manufacturing cost of the abutment.

[0027] In this embodiment, the limiting structure 21 includes a limiting abutment surface 23 and a width limiting guide surface 24. The limiting abutment surface 23 abuts axially with the cap of the fixing bolt 3, and the limiting thread 22 is formed on the width limiting guide surface 24 and circumferentially engages with the threaded section of the fixing bolt 3.

[0028] The limiting abutment surface prevents the bolt cap from passing through, forming a physical limit, while the width-limiting guide surface ensures that the thread axis is concentric during threaded engagement, allowing the fixing bolt to accurately drop and connect with the implant. The bolt achieves automatic guidance and positioning fixation through the limiting structure, enhancing installation convenience and stability.

[0029] In this embodiment, the limiting structure 21 is concentrically arranged in a ring shape in the fixing through hole 2. The end face of the ring is a limiting abutment surface 23 with an inner diameter smaller than the cap of the fixing bolt 3. The inner wall of the ring is a width limiting guide surface 24 and a limiting thread 22 is provided and extends axially.

[0030] A complete limiting thread can be made in the annular fixed through hole to match the fixing bolt, making the screwing of the fixing bolt smoother, while ensuring the axial position of the fixing bolt to prevent eccentric screwing, so that the threaded section can accurately reach the connection point.

[0031] In this embodiment, at least a portion of the threaded section of the fixing bolt 3 extends from one side of the implantation part 12 through the limiting structure 21.

[0032] When the fixing bolt cap contacts the limiting structure, the length of the bolt rod needs to be sufficient to extend from the other end of the fixing through hole, and the abutment body is tightened into the connecting groove of the implant by tightening the bolt cap.

[0033] In this embodiment, a sliding section is provided between the threaded section of the fixing bolt 3 and the bolt cap, and the sliding section slides in contact with the limiting thread 22.

[0034] After the fixing bolt rotates through the limiting thread, the sliding section can slide axially with the limiting thread. The fixing bolt has more adjustment space before being connected to the implant, so that the implant part 12 can be fitted into the connecting groove of the implant first, preventing the problem of the abutment being lifted before the threaded section is screwed in.

[0035] In this embodiment, the cap of the fixing bolt 3 is clearance-fitted with the wall of the fixing through hole 2.

[0036] Clearance fit provides assembly flexibility and a certain buffer, preventing bolts from getting stuck or difficult to screw in due to hole wall tolerance errors.

[0037] In this embodiment, the implantation part 12 is provided with a positioning block 121 with a polygonal main body shape, and the threaded section of the fixing bolt 3 extends vertically from the locking abutment surface 122 at one end of the positioning block 121.

[0038] Polygonal positioning blocks are used for anti-rotation and implant positioning. Geometric fits such as hexagons or octagons can enhance shear resistance and improve initial stability. The vertical locking structure helps to balance the force on the locking abutment surface and improves the accuracy of the threaded section and implant docking.

[0039] In this embodiment, the connecting part 11 is provided with a connecting abutment surface 111 inclined to the fixing through hole 2, and a connecting platform 112 is provided on the connecting abutment surface 111. A positioning rod 113 is detachably connected to the platform of the connecting platform 112.

[0040] The inclined connecting abutment surface facilitates installation to align with the angle of the prosthesis or implant. The prosthesis or implant uses the connecting abutment surface as a reference platform and is fixed using positioning bolts on the connecting platform. A positioning rod is connected via holes on the connecting platform to fix the prosthesis or implant. This positioning rod makes it easier to observe the angle of the abutment in the oral cavity, and the inclined positioning rod also effectively improves the operability of the implant entering the implant connection slot, greatly reducing the difficulty of the surgery.

[0041] In this embodiment, a connecting through hole 114 is provided in the connecting platform 112, the connecting through hole 114 is connected to the fixing through hole 2, and the positioning rod 113 is threadedly connected to the connecting through hole and at least part of it extends into the fixing through hole 2.

[0042] When the positioning rod is screwed into the connecting through hole, a part of the rod is exposed in the fixing through hole. The exposed part just blocks the path of the fixing bolt from exiting the fixing through hole, which can prevent the fixing bolt from accidentally falling out from the entry end of the fixing through hole.

[0043] Example 2

[0044] The shape of the limiting structure 21 in Embodiment 1 is changed. The limiting structure 21 is composed of at least three limiting strips evenly distributed on the wall of the fixed through hole 2 in the circumferential direction. The end of the limiting strip is the limiting abutment surface 23, and the side of the limiting strip near the axis is the width limiting guide surface 24 with a limiting thread 22 extending axially.

[0045] Multiple limiting strips are used to reduce the inner diameter of the fixing through hole, allowing the bolt shank to pass through while blocking the bolt cap. The circumferential guiding surfaces of each limiting strip form a non-continuous limiting thread that mates with the threaded segment. Gaps are left between the limiting strips to allow air to escape from the fixing through hole during bolt insertion, rather than from the implantation site connected to the implant.

[0046] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A personalized composite base, comprising a base body (1), characterized in that, The base body (1) has a fixed through hole (2) that passes through the connecting part (11) and the implantation part (12) provided on the base body (1). A fixing bolt (3) is movably provided in the fixed through hole (2). A limiting structure (21) that axially abuts against the cap of the fixing bolt (3) is provided on the hole wall of the fixed through hole (2). A limiting thread (22) is provided in the limiting structure (21) that engages with the threaded section of the fixing bolt (3).

2. The personalized composite base according to claim 1, characterized in that, The limiting structure (21) includes a limiting abutment surface (23) and a width limiting guide surface (24). The limiting abutment surface (23) abuts axially with the cap of the fixing bolt (3). The limiting thread (22) is opened on the width limiting guide surface (24) and circumferentially engages with the threaded section of the fixing bolt (3).

3. The personalized composite base according to claim 2, characterized in that, The limiting structure (21) is concentrically arranged in a ring in the fixed through hole (2). The end face of the ring is the limiting abutment surface (23) with an inner diameter smaller than the cap of the fixing bolt (3). The inner wall of the ring is the width limiting guide surface (24) and the limiting thread (22) extends axially.

4. The personalized composite base according to claim 2, characterized in that, The limiting structure (21) is composed of at least three limiting strips evenly distributed around the wall of the fixed through hole (2). The end of the limiting strip is a limiting abutment surface (23), and the side of the limiting strip near the axis is a width limiting guide surface (24) with the limiting thread (22) extending axially.

5. The personalized composite base according to claim 1, characterized in that, At least a portion of the threaded section of the fixing bolt (3) extends from one side of the implantation part (12) through the limiting structure (21).

6. The personalized composite base according to claim 5, characterized in that, A sliding section is provided between the threaded section of the fixing bolt (3) and the bolt cap, and the sliding section slides in contact with the limiting thread (22).

7. The personalized composite base according to claim 5, characterized in that, The cap of the fixing bolt (3) is clearance-fitted with the wall of the fixing through hole (2).

8. The personalized composite base according to claim 1, characterized in that, The implantation part (12) is provided with a positioning block (121) with a polygonal main body shape, and the threaded section of the fixing bolt (3) extends vertically from the locking abutment surface (122) at one end of the positioning block (121).

9. The personalized composite base according to claim 1, characterized in that, The connecting part (11) is provided with a connecting abutment surface (111) inclined to the fixed through hole (2), and a connecting platform (112) is provided on the connecting abutment surface (111). A positioning rod (113) is detachably connected to the platform of the connecting platform (112).

10. The personalized composite base according to claim 9, characterized in that, The connecting platform (112) has a connecting through hole (114) which is connected to the fixing through hole (2). The positioning rod (113) is threadedly connected to the connecting through hole (114) and at least part of it extends into the fixing through hole (2).

Images