An adjustable angle abutment device and method of use

Abstract

The application discloses an angle-adjustable composite base device and a use method thereof, and the angle-adjustable composite base device and the use method thereof comprise an implant, a base part and a crown part; the base part comprises a fixed part and an adjusting part, the adjusting part is internally provided with an adjusting device, the adjusting device comprises a rotating groove, the rotating groove is provided with a through hole, a rotating disc is arranged in the rotating groove, a one-way groove is formed in the inner wall of the rotating groove, an adjusting groove is formed in the rotating disc, an adjusting block is arranged in the adjusting groove, an assembling part is fixedly connected to one side of the rotating disc, an assembling hole one is formed in the assembling part, an adjusting rod is fixedly connected to one side of the adjusting block, a repulsion device is arranged on one side of the adjusting rod, and the assembling part and the implant have an angle difference of 1-3 degrees; a cavity is formed in the implant, a threaded hole is formed in the fixed part of the base part, a fixing bolt is threadedly connected in the base part, a fixing block is arranged on the fixed part of the base part and corresponds to a clamping part of the cavity, an assembling groove is formed in the crown part, and the crown part is provided with an assembling bolt.

Description

Technical Field

[0001] This invention belongs to the field of dental implant technology, and more specifically, relates to an adjustable angle composite abutment device and its usage method. Background Technology

[0002] Dental implants are a method of tooth restoration that replaces missing teeth by inserting artificial implants. A dental implant consists of an implant, an abutment, and a crown. During the procedure, dentists first create a threaded groove in the alveolar bone, then screw the implant into the groove, connect the abutment to the implant using threads, and finally attach the crown to the abutment. Common methods for connecting the crown include adhesive bonding and screw connection.

[0003] The inventors believe that in the field of dental implant restoration, the abutment is a key component connecting the implant and the crown restoration. Because the angles of different teeth in the human oral cavity vary by 1° to 3°, the adaptability of the abutment angle directly affects the final restoration structure.

[0004] Traditional abutments with pre-set fixed angle designs have revealed significant limitations in clinical use due to the individual differences in the anatomical morphology of patients' alveolar bone. The angle of implant placement is often adjusted according to individual differences, and the fixed angle options of pre-formed abutments cannot match the clinical needs of multiple individuals with different differences.

[0005] Especially for edentulous patients with severe bone resorption, implants in the maxillary posterior region often need to be placed at an angle to avoid the maxillary sinus, while implants in the mandible need to avoid the nerve canal. In this case, the pre-formed fixed-angle abutment may cause the restoration to deviate from the ideal position, resulting in problems such as overhang of the restoration margin or occlusal interference.

[0006] Furthermore, for patients who need to implant all or most of their teeth, the errors during the implantation process can accumulate due to multiple implants. That is, the error of a single implant is added together by multiple factors, resulting in a large difference in the final product. Since implants are custom-made, they cannot be significantly modified in the hospital, so taking new impressions would take a long time.

[0007] Current solutions largely rely on custom-made abutments, but this method suffers from drawbacks such as long fabrication cycles and high costs, and requires re-impression fabrication if the angle is found to be incorrect post-operatively. Another compromise is to compensate for angular deviations by adjusting the crown wax model, but this sacrifices the mechanical strength and aesthetics of the crown restoration. More challenging are cases involving multiple implants working together. If the angles of each abutment cannot be independently fine-tuned, it can lead to difficulties in placing the overall restoration and even cause abnormal stress distribution around the implants. Clinicians are often forced to compromise on implant placement during surgery or to extensively grind and reshape the restoration to fit the existing abutments. This passive adaptation increases surgical risks and affects long-term restoration success rates.

[0008] Therefore, the inventors proposed an adjustable-angle composite base device and its usage method to enable it to flexibly adapt to different patients' conditions. Summary of the Invention

[0009] The purpose of this invention is to provide an adjustable angle composite base device and its usage method to solve the problems mentioned in the background art.

[0010] In view of the shortcomings of the prior art, the purpose of this invention is to provide an adjustable angle composite base device and its usage method.

[0011] To achieve the aforementioned objectives, the present invention employs a technical solution comprising an implant, an abutment, and a crown arranged sequentially. The implant's outer wall has external threads for threaded connection to the implant abutment location on the human body. The implant and abutment are coaxially aligned. The abutment includes a fixing part and an adjusting part. The fixing part is located near the implant, and the adjusting part is located away from the implant. A locking bolt is fixed to the adjusting part near the fixing part. A locking hole is provided on the fixing part corresponding to the locking bolt. The locking bolt is coaxially aligned with the locking hole and can be threaded into the locking hole. The adjusting part includes an adjusting device, which comprises a rotating groove coaxially aligned with the abutment. A through hole communicating with the rotating groove is provided on the side away from the fixed part. A rotating disk coaxially aligned with the adjusting part is located inside the rotating groove. Multiple one-way grooves are formed circumferentially on the inner wall of the rotating groove. Two adjusting grooves are mirror-imaged on the rotating disk. Two adjusting blocks are slidably connected within the two adjusting grooves. The outer walls of the adjusting blocks abut against the inner walls of the one-way grooves. An assembly part is fixedly connected to the side of the rotating disk away from the fixed part. An assembly hole with internal threads is provided on the assembly part, extending to the axis of the rotating disk. An adjusting rod is fixedly connected to the side of the adjusting block corresponding to the assembly hole. The two adjusting rods are perpendicular to the axis of the assembly hole. A repulsive device is provided on the side where the two adjusting rods approach each other. The assembly part has a 1°~3° angle with the implant. The implant has a cavity including a threaded portion and a clamping portion. The abutment has a threaded hole coaxial with the threaded portion of the cavity. The abutment has a threaded bolt coaxial with the threaded hole. The bolt can be threaded into the cavity. The abutment has a fixing block corresponding to the clamping portion of the cavity. The clamping portion and the fixing block cooperate to prevent the abutment and implant from rotating relative to each other. The crown is located at the end of the abutment away from the implant. The crown has a mounting groove. The mounting portion of the abutment can be inserted into the mounting groove. The top of the crown has a mounting hole 2 connected to the mounting groove. The abutment has symmetrical mounting surfaces on the side near the crown. The inner wall of the mounting groove and the mounting surface are adapted to each other. The crown has a mounting bolt coaxial with the mounting hole 2.

[0012] In this design, the implant, abutment (including fixation and adjustment), and crown are the main components of the device. The threaded connections, clamping fits, and adjustment mechanisms between these components are essential for realizing the device's functions. Without any one of these components, the device cannot fully achieve its adjustable angle and stable installation functions.

[0013] Optionally, the adjusting block can be inserted into the one-way slot, and the adjusting block can be accommodated in the adjusting slot. The repulsive device can push the two adjusting rods to move in a direction that moves away from each other, thus pushing the adjusting block to be inserted into the one-way slot.

[0014] Alternatively, the mounting bolts can fully push the two adjusting blocks into the one-way slots.

[0015] Optionally, the angle difference between the assembly and the implant is 1°.

[0016] This solution specifies that the angle difference between the assembly unit and the implant is 1°, which meets the characteristics of the device to adapt to the tilt angle requirements of different dental structures.

[0017] Optionally, the threads of the fixing bolt, external thread, and locking bolt are in the same direction.

[0018] This solution ensures that the threads of the fixing bolts, external threads, and locking bolts are in the same direction, thus preventing loosening of connected components during tightening and guaranteeing the stability of the device during installation and adjustment.

[0019] Optionally, the fixing block is an equilateral hexagon, and the clamping part of the cavity is an internal hexagonal fitting.

[0020] This solution defines the fixing block as an equilateral hexagon and the clamping part of the cavity as an internal hexagonal plate. This structure can better achieve anti-rotation fit between the abutment and the implant, and further defines the connection structure between the abutment and the implant.

[0021] Optionally, one side of the one-way groove is collinear with the diameter of the rotating disk, and the other side is inclined in the same direction. The shape of the adjusting block is the same as the shape of the one-way groove.

[0022] This solution details the shapes of the unidirectional groove and the regulating block, which form the basis for realizing the unidirectional multi-stage regulating mechanism.

[0023] Optionally, the rotating disk and the adjusting part are arranged coaxially, and multiple one-way grooves are opened circumferentially on the inner wall of the rotating groove. One side of each one-way groove is arranged collinearly with the diameter of the rotating disk, and the other side of each one-way groove is inclined in the same direction.

[0024] This scheme further emphasizes the arrangement relationship between the rotating disk, rotating groove, and one-way groove to ensure the normal operation of the adjustment device.

[0025] Optionally, S1: Implant placement S101: At the predetermined implantation site in the alveolar bone of the patient's jawbone, a threaded groove matching the external thread of the implant is created using surgical tools; S102: Screw the implant vertically into the threaded groove, ensuring that the implant axis is basically aligned with the axis of the natural teeth on the alveolar bone, thus completing the initial fixation of the implant; S2: The abutment fixation part is connected to the implant; S201: Insert the fixing part of the abutment into the implant cavity, so that the fixing block on the outer wall of the fixing part is fully embedded in the clamping part of the implant cavity, ensuring that the abutment and the implant cannot rotate relative to each other; S202: Screw the fixing bolt into the threaded hole of the abutment fixing part, through the threaded part of the implant cavity, and tighten the fixing bolt to make the abutment fixing part and the implant firmly connected. S3: The abutment adjustment section, assembly section, and crown section are connected to the implant; S301: Tighten the locking bolt between the adjusting part and the fixed part to fix the angle between the base adjusting part and the fixed part. At the same time, the relative position of the adjusting part and the assembly part is stationary. The assembly part is located on one side of the fixed part and its relative position does not change. S302: Fit the mounting slot of the crown into the outer wall of the mounting part of the abutment, so that the inner wall of the mounting slot is completely fitted with the mounting surface of the mounting part of the abutment, ensuring that the crown and the abutment cannot rotate relative to each other. S4: Assembly section angle adjustment; S401: Manually rotate the assembly part of the adjustment unit to drive the rotating disk to rotate unidirectionally in the rotation groove of the adjustment unit; S402: During the rotation, the two adjusting blocks on the rotating disk are pushed by the repulsive force device and always fit with the one-way groove on the inner wall of the rotating groove. Each time the disk rotates to a one-way groove position, the adjusting block automatically embeds itself into the groove. S403: After adjusting to the target angle, screw the mounting bolt into the mounting hole 1 of the mounting part corresponding to the mounting hole 2 of the crown part. The bottom of the mounting bolt pushes the two adjusting rods to move away from the axis, further pushing the adjusting block completely into the corresponding one-way groove. At the same time, the repulsion device is destroyed, so that the two adjusting blocks do not have the tendency to approach each other, and the current angle of the mounting part is locked. S5: Final inspection; S501: Confirm that there is no looseness at any connection point between the implant, abutment, and crown.

[0026] This solution includes complete steps for using the adjustable angle composite base device. Each step is a necessary operation for device installation and angle adjustment. Only by following this procedure can the device be used correctly.

[0027] Optionally, the threads of the fixing bolt, the implant external thread, and the locking bolt are aligned.

[0028] Optionally, in step S4, one side of the one-way groove is collinear with the diameter of the rotating disk, and the other side is inclined in the same direction. The shape of the adjusting block is the same as the shape of the one-way groove.

[0029] Effects of this invention: I. Advantages of Structural Design 1. Modular Component Structure: The device adopts a modular design consisting of the implant, abutment (fixation and adjustment sections), and crown. Each component functions independently yet works collaboratively. The implant is securely connected to the alveolar bone via external threads. The fixation section precisely engages with the hexagonal locking mechanism within the implant using hexagonal fixing blocks, forming an anti-rotation structure. The adjustment section connects to the fixation section via locking bolts, achieving both angle adjustment and locking functions. The crown section matches the abutment assembly section via a non-circular mounting surface, preventing relative rotation. This modular design reduces the difficulty of surgical procedures and facilitates subsequent maintenance and adjustments.

[0030] 2. Unidirectional Multi-level Adjustment Mechanism: The adjustment unit features a rotating disk and a unidirectional groove structure. Adjustment blocks, mirror-distributed on the rotating disk, are pushed by a repulsive force device (such as a spring) and remain in contact with the inner wall of the unidirectional groove. The unidirectional groove has multiple circumferential positions; each time the rotation reaches a position, the adjustment block automatically engages within the groove, forming multiple angle fixations. This design allows dentists to precisely adapt to the patient's tooth inclination requirements (e.g., a difference of 1° to 3°), achieving personalized angle adjustment without complex measurements.

[0031] 3. Double anti-loosening protection: Mechanical anti-rotation design: The hexagonal fixing block of the fixation part and the hexagonal clamping part inside the implant form a rigid constraint to ensure that there is no relative rotation between the abutment and the implant; the non-circular mounting surface of the crown part matches the mounting part of the abutment part, further eliminating the risk of rotation between the crown and the abutment part; consistent thread direction: the external threads of the implant, the fixing bolts and the locking bolts have the same thread direction, avoiding loosening of connected parts due to opposite directions during the tightening process, and improving the overall structural stability.

[0032] 4. Repulsion device and mounting bolt locking mechanism: The repulsion device (such as a magnetic pole) continuously pushes the adjusting block into the one-way groove, maintaining the angle of the adjusting part; after the mounting bolt is screwed in, the bottom pushes the two adjusting rods away from the axis, further pushing the adjusting block completely into the one-way groove, eliminating the possibility of the adjusting block retraction. The synergistic effect of the two ensures that the position is fixed after angle adjustment, avoiding angle deviation caused by external forces during use.

[0033] II. Advantages of Usage 1. Clear step-by-step operation logic: The usage process is divided into five steps: implant installation, abutment fixation, adjustment unit connection, angle adjustment, and final inspection. Each step has a clear function: Implant installation: The threaded groove is matched to ensure that the axis is basically consistent with the natural tooth, providing a benchmark for subsequent abutment positioning; Abutment fixation: After the fixation unit is inserted into the implant, the fixing bolts are tightened to form a rigid connection, ensuring that there is no relative displacement between the abutment and the implant; Adjustment unit connection: After the locking bolts are tightened, the angle between the adjustment unit and the fixation unit is fixed, providing stable support for subsequent crown assembly; Angle adjustment: The assembly unit is rotated in one direction, and the adjustment block is matched with the one-way groove to achieve precise angle adaptation, which is finally locked by the assembly bolts; Final inspection: Confirm that there is no looseness at any connection point to ensure safety during use.

[0034] 2. Unidirectional adjustment to meet individual needs: The adjustment unit can only rotate in a preset direction (such as clockwise) to accommodate the different tilt angles of different patients' dental structures (such as different tooth rotation angles in a 1° group). Doctors can manually rotate the assembly unit to the target position based on actual observation, and the adjustment block will automatically embed into the corresponding unidirectional slot to achieve the effect of "adjust and fix immediately" without the need for additional measurement or complex adjustments.

[0035] 3. High reliability of final locking: After the assembly bolt is screwed in, the adjusting block is not only pushed into the one-way groove by the adjusting rod, but also the springback space of the repulsion device is eliminated by mechanical pressure (such as compressing a spring to its limit), ensuring that the adjusting block cannot retract due to the action of the repulsion device. This design avoids the risk of angle deviation caused by the aging of elastic elements in traditional adjusting mechanisms, and significantly improves long-term stability. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is an overall schematic diagram of an adjustable angle composite base device according to the present invention; Figure 2 This is a partial schematic diagram of an adjustable angle composite abutment device protruding from the implant in this invention; Figure 3 This is an exploded view of the implant and fixation part of an adjustable angle composite abutment device according to the present invention; Figure 4 This is a side view of the connection relationship of the protruding base portion of an adjustable angle composite base device according to the present invention; Figure 5This is a cross-sectional view showing the connection relationship of the protruding base portion of an adjustable angle composite base device according to the present invention. Figure 6 This is a partial schematic diagram showing the connection relationship between the protruding assembly part and the turntable of an adjustable angle composite base device according to the present invention. Figure 7 This is a cross-sectional view of the adjustable angle composite base device of the present invention, showing the adjustment device protruding from the device. Figure 8 This is a cross-sectional view of the protruding crown portion of an adjustable angle composite abutment device according to the present invention; Figure label: 1. Implant; 11. Cavity; 12. Threaded part; 13. Clamping part; 14. Threaded hole; 15. Fixing bolt; 2. Abutment part; 21. Fixing part; 211. Locking hole; 212. Fixing block; 22. Adjusting part; 221. Locking bolt; 23. Assembly part; 231. Assembly surface; 3. Crown part; 31. Assembly groove; 32. Assembly bolt; 4. Adjusting device; 41. Rotating groove; 42. Rotating disk; 43. One-way groove; 44. Adjusting groove; 45. Adjusting block; 46. Adjusting rod; 5. Repulsion device; 61. Assembly hole one; 62. Assembly hole two; In the accompanying drawings, the same parts are labeled with the same reference numerals; the drawings are not drawn to scale. Detailed Implementation

[0038] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0039] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0041] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0042] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0043] The present invention aims to introduce and explain the structural composition of an adjustable angle composite base device and its usage method, as well as the cooperation relationship between the various components. Unless otherwise specified, the dimensions, materials, and manufacturing processes of the various components suitable for the adjustable angle composite base device and its usage method in the present invention embodiments can be selected according to specific circumstances, and are not particularly limited or explained here.

[0044] Furthermore, in order to provide the public with a better understanding of the invention, certain specific details have been described in detail. However, those skilled in the art can fully understand the invention even without these detailed descriptions.

[0045] Example 1 Please see Figure 1-8As shown, an adjustable-angle composite abutment device and its usage method include an implant 1, an abutment portion 2, and a crown portion 3, which are arranged sequentially.

[0046] Please see Figure 1-8 As shown, the implant 1 is located on one side of the abutment 2. The outer wall of the implant 1 is provided with external threads (not shown or labeled in the prior art drawings for clarity). The implant 1 is used for threaded connection to the position of the implant abutment in the human body. The axis of the implant 1 is a straight line, and the implant 1 is coaxial with the abutment 2.

[0047] In use, a threaded groove is made in the alveolar bone at the patient's jawbone. The external thread of the implant 1 is matched with the alveolar bone to connect the implant 1 to the alveolar bone. The angle of the implant 1 is the same as that of the teeth that are naturally formed on the alveolar bone, ensuring that the angle of the patient's teeth is basically consistent.

[0048] Please see Figure 1-8 As shown, the abutment part 2 includes a fixing part 21 and an adjusting part 22. The fixing part 21 is located on the side close to the implant 1, and the adjusting part 22 is located on the side of the fixing part 21 away from the implant 1. A locking bolt 221 is provided on the side of the adjusting part 22 close to the fixing part 21. A locking hole 211 is provided on the side of the fixing part 21 corresponding to the locking bolt 221. The locking bolt 221 and the locking hole 211 are coaxially arranged. The locking bolt 221 can be threaded into the locking hole 211 to limit the relative position of the fixing part 21 and the adjusting part 22.

[0049] Please see Figure 1-8As shown, the adjustment part 22 is equipped with an adjustment device 4, which includes a rotating groove 41. The rotating groove 41 is coaxially arranged with the base part 2. A through hole is opened on the side of the rotating groove 41 away from the fixed part 21, and the through hole communicates with the rotating groove 41, but is not shown in the figure. A rotating disk 42 is arranged in the rotating groove 41. The rotating disk 42 is coaxially arranged with the adjustment part 22. Multiple one-way grooves 43 are opened circumferentially on the inner wall of the rotating groove 41. One side of each one-way groove 43 is collinear with the diameter of the rotating disk 42, and the other side of each one-way groove 43 is inclined in the same direction. Two adjustment grooves 44 are mirror-image opened on the rotating disk 42. Two adjustment blocks 45 are slidably connected in the two adjustment grooves 44. The shape of the two adjustment blocks 45 is the same as the shape of the one-way grooves 43. The outer wall of the adjustment block 45 can abut against the inner wall of the one-way groove 43. The one-way groove 43 can fully accommodate the adjusting block 45; the rotating disk 42 is fixedly connected to the side away from the fixed part 21 with an assembly part 23. The assembly part 23 has an assembly hole 61 with an internal thread. The assembly hole 61 extends to the axis of the rotating disk 42. The adjusting block 45 is fixedly connected to the side of the assembly hole 61 with an adjusting rod 46. The two adjusting rods 46 are perpendicular to the axis of the assembly hole 61. The two adjusting rods 46 are provided with a repulsion device 5 on the side of the two adjusting rods 46 that are close to each other. The repulsion device 5 includes, but is not limited to, a spring and a magnetic pole. The repulsion device 5 can push the two adjusting rods 46 to move in a direction that moves away from each other, pushing the adjusting block 45 into the one-way groove 43; the assembly part 23 and the implant 1 have an angle difference of 1° to 3°. In this invention, it has 1°, which is in line with the angle of human teeth.

[0050] In use, by rotating the assembly part 23, the rotating disk 42 is driven to rotate in the rotating groove 41 of the adjustment part 22. The rotating disk 42 and the assembly part 23 can only rotate in one direction. Since the assembly part 23 has an angle of 1°, it can adapt to different dental structures of people with a 1° angle by rotating in one direction. The inclination angle of each tooth and the rotation angle relative to the oral cavity and throat are different. Multiple one-way grooves 43 are arranged circumferentially in the rotating groove 41, which can adjust the rotation angle of the assembly part 23 according to the level. At the same time, the two adjustment blocks 45 are pushed into the one-way grooves 43 by the repulsion device 5 to realize one-way multi-level adjustment. When the assembly hole 61 in the assembly part 23 is filled by the assembly bolt 32, the assembly bolt 32 can push the two adjustment rods 46 to move in a direction away from each other, so that the two adjustment blocks 45 are inserted into the one-way grooves 43, limiting the relative position of the assembly part 23 to not change. The tilt angle of the assembly part 23 does not affect the assembly bolt 32 from pushing the two adjustment rods 46 in a direction away from each other, so that the adjustment blocks 45 can be completely pushed into the one-way grooves 43.

[0051] Please see Figure 1-8As shown, the implant 1 has a cavity 11. The cavity 11 of the implant 1 includes a threaded portion 12 and a clamping portion 13. The threaded portion 12 is located on the side of the implant 1 away from the crown portion 3, and the clamping portion 13 is located on the side of the threaded portion 12 close to the crown portion 3.

[0052] Please see Figure 1-8 As shown, a threaded hole 14 is provided in the fixing part 21 of the base part 2. The threaded hole 14 is coaxially arranged with the threaded part 12 of the cavity 11 of the implant 1. A fixing bolt 15 is threadedly connected to the base part 2. The fixing bolt 15 is coaxially arranged with the threaded hole 14. The fixing bolt 15 is threadedly connected to the threaded hole 14 of the base part 2 and to the threaded part 12 in the cavity 11. Please see Figure 1-8 As shown, the fixing part 21 of the abutment part 2 is provided with a fixing block 212 corresponding to the clamping part 13 of the cavity 11. The fixing block 212 is an equilateral hexagonal shape. The clamping part 13 of the cavity 11 corresponds to the shape of the fixing block 212, and is configured to have an internal hexagonal inner wall. The clamping part 13 of the cavity 11 can cooperate with the fixing block 212, and is limited to the fact that when the fixing block 212 of the abutment part 2 is inserted into the clamping part 13, the abutment part 2 and the implant 1 cannot rotate relative to each other. The threads of the fixing bolt 15, the external thread, and the locking bolt 221 are in the same direction.

[0053] In use, the fixing part 21 of the abutment part 2 is inserted into the implant 1, and the fixing block 212 provided on the abutment fixing part 21 is inserted into the clamping part 13 of the implant 1. The inner wall of the clamping part 13 abuts against the outer surface of the fixing block 212, limiting the relative angle between the fixing block 212 of the abutment part 2 and the implant 1 to remain unchanged. By tightening the fixing bolt 15, the fixing part 21 of the abutment part 2 and the implant 1 are connected to each other, limiting the relative position to remain unchanged. The threads of the fixing bolt 15, the external thread, and the locking bolt 221 are in the same direction, so there will be no situation where the threaded connection between the implant 1 and the alveolar bone is loosened when the fixing bolt 15 is tightened. Similarly, when the adjusting part 22 of the abutment part 2 and the fixing part 21 of the abutment part 2 are connected by the locking bolt 221, there will be no situation where the threaded connection between the implant 1 and the alveolar bone is loosened, and there will be no situation where the fixing bolt 15 of the implant 1 and the fixing part 21 is loosened.

[0054] Please see Figure 1-8As shown, the crown portion 3 has an abutment portion 2 at one end away from the implant 1. A mounting groove 31 is provided inside the crown portion 3. The mounting portion 23 of the abutment portion 2 can be inserted into the mounting groove 31. A mounting hole 62 communicating with the mounting groove 31 is provided at the top of the crown portion 3. A mounting surface 231 is symmetrically provided on the side of the abutment portion 2 near the crown portion 3. The inner wall of the mounting groove 31 is adapted to the mounting surface 231. Because the mounting surface 231 makes the inner wall of the crown groove non-circular, the crown portion 3 and the abutment portion 2 cannot rotate relative to each other when the crown portion 3 is fitted outside the abutment portion 2. A mounting bolt 32 is provided on the crown portion 3 at the position corresponding to the mounting hole. The mounting bolt 32 is coaxially arranged with the mounting hole.

[0055] In use, the crown portion 3 is fitted over the mounting groove 31, and the mounting groove 31 matches the mounting surface 231 opened on the abutment portion 2, so that the relative angle between the crown portion 3 and the abutment portion 2 does not change.

[0056] A method for using an adjustable angle composite base device: S1: Implant 1 installation; S101: At the predetermined implantation site in the alveolar bone of the patient's jawbone, a threaded groove matching the external thread of implant 1 is created using surgical tools.

[0057] S102: Screw implant 1 vertically into the threaded groove, ensuring that the axis of implant 1 is basically aligned with the axis of the natural teeth on the alveolar bone, thus completing the initial fixation of implant 1.

[0058] S2: The abutment part 2 and the fixing part 21 are connected to the implant 1; S201: Insert the fixing part 21 of the abutment part 2 into the cavity 11 of the implant 1, so that the hexagonal fixing block 212 on the outer wall of the fixing part 21 is completely embedded in the clamping part 13 (internal hexagonal structure) of the cavity 11 of the implant 1, ensuring that the abutment part 2 and the implant 1 cannot rotate relative to each other.

[0059] S202: Screw the fixing bolt 15 into the threaded hole 14 of the fixing part 21 of the abutment 2, pass through the threaded part 12 of the cavity 11 of the implant 1, and tighten the fixing bolt 15 to make the fixing part 21 of the abutment 2 and the implant 1 firmly connected; the threads of the fixing bolt 15, the external thread of the implant 1 and the subsequent locking bolt 221 are in the same direction to avoid loosening the connected parts when tightening.

[0060] S3: The abutment part 2, the adjustment part 22, the assembly part 23 and the crown part 3 are connected to the implant 1; S301: Tighten the locking bolt 221 between the adjusting part 22 and the fixing part 21 to fix the angle between the adjusting part 22 and the fixing part 21 of the base part 2. At the same time, the adjusting part 22 and the assembly part 23 remain stationary relative to each other. The assembly part 23 is located on one side of the fixing part 21 and its relative position does not change.

[0061] S302: Fit the mounting groove 31 of the crown portion 3 into the outer wall of the mounting portion 23 of the abutment portion 2, so that the inner wall of the mounting groove 31 is completely fitted with the non-circular mounting surface 231 of the mounting portion 23 of the abutment portion 2, ensuring that the crown portion 3 and the abutment portion 2 cannot rotate relative to each other.

[0062] S4: Assembly section 23 angle adjustment; S402: Manually rotate the assembly part 23 of the adjustment part 22 to drive the rotating disk 42 to rotate unidirectionally in the rotating groove 41 of the adjustment part 22 (due to the structural limitation of the unidirectional groove 43, it can only rotate in the preset direction); the assembly part 23 and the implant 1 have a preset tilt angle of 1°, and the tilt angle requirements of different dental structures can be adapted by unidirectional rotation.

[0063] S402: During rotation, the two adjusting blocks 45 on the rotating disk 42 are pushed by the repulsive force device 5 (such as a spring) and always fit against the one-way groove 43 on the inner wall of the rotating groove 41; each time it rotates to the position of a one-way groove 43, the adjusting block 45 automatically embeds into the groove to achieve multi-level angle fixation.

[0064] S403: After adjusting to the target angle, screw the mounting bolt 32 into the mounting hole 62 of the crown part 3 corresponding to the mounting hole 61 of the mounting part 23. The bottom of the mounting bolt 32 pushes the two adjusting rods 46 to move away from the axis, further pushing the adjusting block 45 completely into the corresponding one-way groove 43, while destroying the repulsion device 5, so that the two adjusting blocks 45 do not have the tendency to approach each other, and locking the current angle of the mounting part 23.

[0065] S5: Final inspection; S501: Confirm that there is no looseness at the connection points of implant 1, abutment 2, and crown 3.

[0066] Effects of this invention: I. Advantages of Structural Design 1. Modular Component Structure: The device adopts a modular design consisting of implant 1, abutment 2 (fixation part 21 + adjustment part 22), and crown 3. Each component functions independently yet works collaboratively. Implant 1 is securely connected to the alveolar bone via external threads. Fixation part 21 precisely engages with the internal hexagonal locking part 13 of implant 1 via hexagonal fixing block 212, forming an anti-rotation structure. Adjustment part 22 connects to fixation part 21 via locking bolt 221, achieving both angle adjustment and locking functions. Crown 3 matches abutment part 23 via non-circular mounting surface 231, preventing relative rotation. The modular design reduces the difficulty of surgical procedures and facilitates subsequent maintenance and adjustments.

[0067] 2. Unidirectional Multi-level Adjustment Mechanism: The adjustment unit 22 is equipped with a rotating disk 42 and a unidirectional groove 43. The adjustment blocks 45, which are mirror-distributed on the rotating disk 42, are pushed by the repulsive force device 5 (such as a spring) and are always in contact with the inner wall of the unidirectional groove 43. The unidirectional groove 43 has multiple positions along its circumference. Each time it is rotated to a position, the adjustment block 45 automatically embeds into the groove, forming a multi-level angle fixation. This design allows doctors to make precise adaptations according to the patient's tooth inclination requirements (such as a difference of 1° to 3°) and achieve personalized angle adjustment without complicated measurements.

[0068] 3. Double anti-loosening protection: Mechanical anti-rotation design: The hexagonal fixing block 212 of the fixing part 21 and the internal hexagonal clamping part 13 of the implant 1 form a rigid constraint to ensure that there is no relative rotation between the abutment part 2 and the implant 1; the non-circular mounting surface 231 of the crown part 3 matches the mounting part 23 of the abutment part 2, further eliminating the risk of rotation between the crown part 3 and the abutment part 2; Thread direction consistency: The external thread of the implant 1, the fixing bolt 15 and the locking bolt 221 have the same thread direction, avoiding loosening of connected parts due to opposite directions during the tightening process, and improving the overall structural stability.

[0069] 4. Repulsion device 5 and mounting bolt 32 work together to lock: The repulsion device 5 (such as a magnetic pole) continuously pushes the adjusting block 45 into the one-way groove 43, maintaining the angle of the adjusting part 22; after the mounting bolt 32 is screwed in, the bottom pushes the two adjusting rods 46 to move away from the axis, further pushing the adjusting block 45 completely into the one-way groove 43, eliminating the possibility of the adjusting block 45 retracting. The two work together to ensure that the position is fixed after the angle is adjusted, avoiding angle deviation caused by external force during use.

[0070] II. Advantages of Usage 1. Clear step-by-step operation logic: The usage process is divided into five steps: implant 1 installation, abutment 2 fixation, adjustment part 22 connection, angle adjustment, and final inspection. Each step has a clear function: Implant 1 installation: The external thread is matched to ensure that the axis is basically consistent with the natural tooth, providing a reference for the subsequent positioning of abutment 2; Abutment 2 fixation: After the fixation part 21 is inserted into the implant 1, it is tightened by the fixing bolt 15 to form a rigid connection, ensuring that there is no relative displacement between abutment 2 and implant 1; Adjustment part 22 connection: After the locking bolt 221 is tightened, the angle between adjustment part 22 and fixation part 21 is fixed, providing stable support for the subsequent assembly of crown 3; Angle adjustment: The assembly part 23 is rotated in one direction, and the adjustment block 45 is matched with the gear of the one-way groove 43 to achieve precise angle adaptation, and finally locked by the assembly bolt 32; Final inspection: Confirm that there is no looseness at each connection to ensure safety of use.

[0071] 2. Unidirectional adjustment to meet individual needs: The adjustment unit 22 can only rotate in a preset direction (such as clockwise) to adapt to the different tilt angles of different patients' dental structures (such as different tooth rotation angles in a 1° group). The doctor can manually rotate the assembly unit 23 to the target position according to actual observation, and the adjustment block 45 will automatically fit into the corresponding unidirectional slot 43 to achieve the effect of "adjust and fix immediately" without additional measurement or complex adjustment.

[0072] 3. High reliability of final locking: After the assembly bolt 32 is screwed in, not only does the adjusting rod 46 push the adjusting block 45 to fully embed into the one-way groove 43, but mechanical pressure also eliminates the springback space of the repulsion device 5 (such as compressing a spring to its limit), ensuring that the adjusting block 45 cannot retract due to the action of the repulsion device 5. This design avoids the risk of angle deviation caused by the aging of elastic elements in traditional adjusting mechanisms, and significantly improves long-term stability.

[0073] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An adjustable-angle composite base device, characterized in that: The implant includes an implant (1), an abutment (2), and a crown (3) arranged sequentially. The implant (1) has external threads on its outer wall for threaded connection to the implant abutment. The implant (1) and the abutment (2) are coaxially aligned. The abutment (2) includes a fixation part (21) and an adjustment part (22). The fixation part (21) is located near the implant (1), and the adjustment part (22) is located away from the implant (1). 22) A locking bolt (221) is fixedly connected to the side near the fixing part (21). The fixing part (21) has a locking hole (211) on the side corresponding to the locking bolt (221). The locking bolt (221) is coaxial with the locking hole (211) and can be threaded into the locking hole (211). The adjusting part (22) is provided with an adjusting device (4). The adjusting device (4) includes a rotating groove (41) coaxial with the base part (2). The rotating groove (41) is away from the fixing part. (21) has a through hole communicating with it on one side. The rotating groove (41) has a rotating disk (42) arranged coaxially with the adjusting part (22). The inner wall of the rotating groove (41) has multiple one-way grooves (43) arranged circumferentially. Two adjusting grooves (44) are mirrored on the rotating disk (42). Two adjusting blocks (45) are slidably connected in the two adjusting grooves (44). The outer wall of the adjusting block (45) can abut against the inner wall of the one-way groove (43). The rotating disk (42) is away from the fixed part. (21) is fixedly connected to one side of the assembly part (23). The assembly part (23) has an assembly hole (61) extending to the axis of the rotating disk (42) and having an internal thread. The adjusting block (45) is fixedly connected to one side of the assembly hole (61) with an adjusting rod (46). The two adjusting rods (46) are perpendicular to the axis of the assembly hole (61). The two adjusting rods (46) are provided with a repulsion device (5) on the side where they are close to each other. The assembly part (23) and the implant (1) have a 1°~3° angle. The angle difference; the implant (1) has a cavity (11) including a threaded part (12) and a clamping part (13) inside. The fixing part (21) of the abutment part (2) has a threaded hole (14) coaxial with the threaded part (12) of the cavity (11) inside the implant (1). The abutment part (2) is threadedly connected with a fixing bolt (15) coaxial with the threaded hole (14). The fixing bolt (15) can be threadedly connected with the threaded part (12) inside the cavity (11). The fixing part (21) of the abutment part (2) is provided with a fixing block (212) corresponding to the clamping part (13) of the cavity (11). The clamping part (13) of the cavity (11) and the fixing block (212) cooperate with each other to limit the abutment part (2) and the implant (1) from rotating relative to each other.The crown portion (3) is located at the end of the abutment portion (2) away from the implant (1). A mounting groove (31) is provided inside the crown portion (3). The mounting portion (23) of the abutment portion (2) can be inserted into the mounting groove (31). A mounting hole (62) communicating with the mounting groove (31) is provided at the top of the crown portion (3). A mounting surface (231) is symmetrically provided on the side of the abutment portion (2) near the crown portion (3). The inner wall of the mounting groove (31) and the mounting surface (231) are mutually adapted. A mounting bolt (32) coaxially aligned with the mounting hole (62) is provided on the crown portion (3) at the position corresponding to the mounting hole (62).

2. The adjustable angle composite base device according to claim 1, characterized in that: The adjusting block (45) can be inserted into the one-way slot (43) and can be accommodated in the adjusting slot (44). The repulsive device (5) can push the two adjusting rods (46) to move in a direction away from each other, and push the adjusting block (45) to be inserted into the one-way slot (43).

3. The adjustable angle composite base device according to claim 2, characterized in that: The assembly bolt (32) can fully push the two adjusting blocks (45) into the one-way slot (43).

4. The adjustable angle composite base device according to claim 1, characterized in that: The angle difference between the assembly part (23) and the implant (1) is 1°.

5. The adjustable angle composite base device according to claim 1, characterized in that: The threads of the fixing bolt (15), the external thread, and the locking bolt (221) are in the same direction.

6. The adjustable angle composite base device according to claim 1, characterized in that: One side of the one-way groove (43) is collinear with the diameter of the rotating disk (42), and the other side is inclined in the same direction. The shape of the adjusting block (45) is the same as that of the one-way groove (43).

7. The adjustable angle composite base device according to claim 6, characterized in that: The rotating disk (42) and the adjusting part (22) are arranged on the same axis. Multiple one-way grooves (43) are opened in the inner wall of the rotating groove (41) along the circumference. One side of each one-way groove (43) is arranged collinearly with the diameter of the rotating disk (42), and the other side of each one-way groove (43) is inclined in the same direction.

8. A method of using the adjustable angle composite base device according to any one of claims 1-7, characterized in that: S1: Implant (1) installation; S101: At the predetermined implantation site in the alveolar bone of the patient's jawbone, a threaded groove matching the external thread of the implant (1) is created using surgical tools; S102: Screw the implant (1) vertically into the threaded groove to ensure that the axis of the implant (1) is basically consistent with the axis of the natural teeth on the alveolar bone, and complete the initial fixation of the implant (1). S2: The abutment part (2) and the fixing part (21) are connected to the implant (1); S201: Insert the fixing part (21) of the abutment part (2) into the cavity (11) of the implant (1), so that the fixing block (212) on the outer wall of the fixing part (21) is completely embedded in the clamping part (13) of the cavity (11) of the implant (1), ensuring that the abutment part (2) and the implant (1) cannot rotate relative to each other; S202: Screw the fixing bolt (15) into the threaded hole (14) of the fixing part (21) of the abutment part (2), pass through the threaded part (12) of the cavity (11) of the implant (1), and tighten the fixing bolt (15) to make the fixing part (21) of the abutment part (2) and the implant (1) firmly connected. S3: The abutment (2), adjustment section (22), assembly section (23) and crown section (3) are connected to the implant (1); S301: Tighten the locking bolt (221) between the adjusting part (22) and the fixing part (21) to fix the angle between the adjusting part (22) and the fixing part (21) of the base part (2). At the same time, the adjusting part (22) and the assembly part (23) remain stationary relative to each other. The assembly part (23) is located on one side of the fixing part (21) and its relative position does not change. S302: Fit the mounting groove (31) of the crown part (3) into the outer wall of the mounting part (23) of the abutment part (2), so that the inner wall of the mounting groove (31) is completely fitted with the mounting surface (231) of the mounting part (23) of the abutment part (2), ensuring that the crown part (3) and the abutment part (2) cannot rotate relative to each other. S4: Angle adjustment of assembly part (23); S401: Manually rotate the assembly part (23) of the adjustment part (22) to drive the rotating disk (42) to rotate unidirectionally in the rotating groove (41) of the adjustment part (22); S402: During the rotation, the two adjusting blocks (45) on the rotating disk (42) are pushed by the repulsive force device (5) and always fit with the one-way groove (43) on the inner wall of the rotating groove (41). Every time the rotation reaches the position of a one-way groove (43), the adjusting block (45) automatically embeds into the groove. S403: After adjusting to the target angle, screw the mounting bolt (32) into the mounting hole 2 (62) of the crown part (3) corresponding to the mounting hole 1 (61) of the mounting part (23). The bottom of the mounting bolt (32) pushes the two adjusting rods (46) to move away from the axis, further pushing the adjusting block (45) completely into the corresponding one-way groove (43), while destroying the repulsion device (5), so that the two adjusting blocks (45) do not have the tendency to approach each other, and locking the current angle of the mounting part (23); S5: Final inspection; S501: Confirm that there is no looseness at any of the connections of the implant (1), abutment (2), and crown (3).

9. The method of using the adjustable angle composite base device according to claim 8, characterized in that: The threads of the fixing bolt (15), the implant (1) external thread, and the locking bolt (221) are in the same direction.

10. A method of using an adjustable angle composite base device according to any one of claims 8-9, characterized in that: In step S4, one side of the one-way groove (43) is collinear with the diameter of the rotating disk (42), and the other side is inclined in the same direction. The shape of the adjusting block (45) is the same as that of the one-way groove (43).

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