A composite implant healing abutment with a gradient biomimetic micro / nano structure

Abstract

This invention discloses a composite implant healing abutment with a gradient biomimetic micro / nano structure, relating to the field of healing abutments. It includes an abutment body connected to the implant, comprising an abutment head, a transgingival portion, and a threaded connection portion arranged sequentially. This composite implant healing abutment with a gradient biomimetic micro / nano structure achieves a composite fixation mode of "axial threaded fastening + circumferential cross-shaped interlocking rotation restriction" between the abutment head and the implant. This mode effectively restricts the relative circumferential rotation of the abutment and implant, resisting alternating torque and lateral loads in the oral cavity, thus eliminating the risk of loosening and rotation from a mechanical structural perspective.

Description

Technical Field

[0001] This invention relates to healing abutment technology, specifically to a dental implant healing composite abutment with a gradient biomimetic micro / nano structure. Background Technology

[0002] A healing abutment is a device used in dental implantology, typically installed after dental implant surgery. Its main function is to provide a temporary structure between the implant (the artificial tooth root implanted in the alveolar bone) and the gingiva to promote soft tissue healing and shaping. A gradient biomimetic micro / nano structure implant healing abutment, based on the traditional titanium / zirconia healing abutment substrate, is a novel oral implant healing component designed to address the different physiological needs of the gingival epithelium, connective tissue layer, and gingival sulcus sealing area. It features an axial (vertical) gradient, micron + nano multi-scale composite design, and biomimetic natural periodontal tissue morphology in the critical transgingival area. The "one-size-fits-all homogeneous surface" is replaced with a zoned gradient customized bio-interface to directionally induce soft tissue growth, strengthen transgingival seal, and inhibit bacteria and protect the gums.

[0003] In dental implant restoration, the healing abutment, as a crucial component connecting the implant to the oral soft tissue, directly determines the quality of soft tissue healing, the effectiveness of perforation closure, and the long-term survival rate of the implant. Currently, the mainstream clinical method for connecting the healing abutment to the implant is threaded connection. This method achieves mechanical fixation through thread engagement, is simple in structure, and has low processing costs, making it widely used in implant restoration. However, during long-term use, the attached gingiva near the upper part of the healing abutment, rich in collagen fibers, generates significant contractile forces. During the use of the healing abutment, it exerts an upward pushing force, and when the patient eats, food comes into contact with the healing abutment, exerting a back-and-forth shaking force. Under the combined effect of these two forces, the threaded connection between the healing abutment and the implant is prone to loosening, resulting in insufficient connection stability of the healing abutment and hindering the healing process at the gingival cuff. Summary of the Invention

[0004] The purpose of this invention is to provide a dental implant healing composite abutment with a gradient biomimetic micro / nano structure to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dental implant healing composite abutment with a gradient biomimetic micro-nano structure, comprising an abutment body connected to an implant, the abutment body comprising an abutment head, a transgingival portion, and a threaded connection portion arranged sequentially, the implant comprising a mating groove adapted to the transgingival portion and a threaded connection groove adapted to the threaded connection portion, the surface of the abutment head having a receiving circular groove, the bottom surface of the receiving circular groove having a locking threaded groove extending into the threaded connection portion, the bottom end of the locking threaded groove having a movable circular groove, and the bottom end of the movable circular groove having a cross-shaped sliding groove; The inner side of the accommodating circular groove is slidably connected to a drive column, the end of the drive column is fixedly connected to a locking screw, the end of the locking screw is fixedly connected to a positioning column, the end of the positioning column is fixedly connected to a limiting plate, and the bottom surface of the threaded connection groove is provided with a limiting groove. The end face of the drive column has a slot, and the end of the base head has a combined slot corresponding to the slot.

[0006] Furthermore, the shape and specifications of the drive column are adapted to the receiving circular groove, the locking screw is slidably connected to the inner side of the locking thread groove, the shape and specifications of the positioning column are adapted to the movable circular groove, and the positioning column is slidably connected to the inner side of the movable circular groove.

[0007] Furthermore, both the limiting plate and the limiting groove are arranged in a cross shape, and the shape and specifications of the limiting plate are adapted to the cross groove.

[0008] Furthermore, when the end face of the drive column is flush with the end face of the base head, the slot is connected to the combination slot.

[0009] Furthermore, the distance between the bottom surface of the drive column and the bottom surface of the receiving circular groove is consistent with the depth of the limiting groove.

[0010] Furthermore, the inner walls of the movable circular groove are respectively provided with an upper limiting end face and a lower limiting end face. When the positioning column moves to contact the upper limiting end face, the outer end face of the driving column is flush with the head end face of the base, and the outer side end face of the limiting plate is flush with the end face of the cross slide groove. When the positioning column moves to contact the lower limiting end face, the driving column is flush with the inner side end face of the accommodating circular groove, and the end face of the limiting plate is in contact with the inner side end face of the limiting groove.

[0011] Compared with existing technologies, the dental implant healing composite abutment with a gradient biomimetic micro / nano structure provided by this invention has the following beneficial effects: 1. This implant healing composite abutment with a gradient biomimetic micro-nano structure, through the built-in transmission channel composed of a receiving circular groove, locking thread groove, movable circular groove and cross slide groove in the abutment head of the abutment body, combined with the linkage structure of drive post, locking screw, positioning post and cross-shaped limiting plate, and adapted to the threaded connection groove and limiting groove of the implant, realizes the composite fixation mode of "axial thread fastening + circumferential cross interlocking rotation restriction" between the abutment and the implant. This can completely restrict the circumferential relative rotation between the abutment and the implant, effectively resist the alternating torque and lateral load in the oral cavity, and eliminate the risk of loosening and rotation from the mechanical structure.

[0012] 2. This implant healing composite abutment with a gradient biomimetic micro-nano structure completes pre-assembly through "synchronous screwing in" and then achieves anti-rotation locking through "independent locking" in a step-by-step operation logic. Not only is the operation logic clear, but it also ensures the convenience and accuracy of clinical installation, thereby effectively avoiding mis-screwing and misalignment during the installation process and greatly improving the efficiency and accuracy of clinical installation.

[0013] 3. This implant healing composite abutment with a gradient biomimetic micro / nano structure, by setting upper and lower limiting end faces on the inner wall of the movable circular groove, can precisely mechanically limit the axial movement of the positioning post, ensuring that the drive post and limiting plate are accurately positioned in the preset position. This avoids assembly interference and anti-rotation failure caused by excessive or insufficient extension of the limiting plate, and also prevents damage to the internal structure caused by over-tightening of the locking screw. At the same time, it ensures that the drive post remains flush with the abutment surface in both the unlocked and locked states, reducing the risk of soft tissue irritation and bacterial retention, and significantly improving the reliability of abutment installation, ease of operation, and long-term stability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the overall structure (non-locked state) provided for an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure (locked state) provided for an embodiment of the present invention; Figure 3 This is a schematic diagram of the implant structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the abutment body and the implant in a separated state according to an embodiment of the present invention; Figure 5This is a schematic diagram of the internal structure of the base body provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the locking screw separated from the base body according to an embodiment of the present invention; Figure 7 Provided for embodiments of the present invention Figure 6 A magnified schematic diagram of the central part of the structure.

[0016] Explanation of reference numerals in the attached figures: 1. Abutment body; 101. Abutment head; 102. Transgingival portion; 103. Threaded connection portion; 2. Implant; 201. Docking groove; 202. Threaded connection groove; 3. Receiving circular groove; 31. Locking threaded groove; 32. Movable circular groove; 33. Cross slide groove; 34. Drive post; 35. Locking screw; 36. Positioning post; 37. Limiting plate; 38. Limiting groove; 39. Slotted groove; 310. Combination groove; 4. Upper limiting end face; 41. Lower limiting end face. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Example 1: Please see Figures 1-7 A composite implant healing abutment with a gradient biomimetic micro / nano structure includes an abutment body 1 connected to an implant 2. The abutment body 1 includes an abutment head 101, a transgingival portion 102, and a threaded connection portion 103 arranged sequentially. The implant 2 includes a mating groove 201 adapted to the transgingival portion 102 and a threaded connection groove 202 adapted to the threaded connection portion 103.

[0019] It should be noted that the abutment body 1 is connected and fixed to the threaded connection groove 202 on the implant 2 through the threaded connection part 103 at the bottom.

[0020] The base head 101 has a receiving circular groove 3 on its surface. The bottom surface of the receiving circular groove 3 has a locking thread groove 31 extending into the threaded connection part 103. The bottom end of the locking thread groove 31 has a movable circular groove 32. The bottom end of the movable circular groove 32 has a cross slide groove 33. A drive column 34 is slidably connected to the inner side of the accommodating circular groove 3. A locking screw 35 is fixedly connected to the end of the drive column 34. A positioning column 36 is fixedly connected to the end of the locking screw 35. A limiting plate 37 is fixedly connected to the end of the positioning column 36. A limiting groove 38 is opened on the bottom surface of the threaded connection groove 202. A slot 39 is provided on the end face of the drive column 34, and a combination slot 310 corresponding to the slot 39 is provided at the end of the base head 101.

[0021] It should be noted that the shape and specifications of the drive column 34 are adapted to the receiving circular groove 3, the locking screw 35 is slidably connected to the inner side of the locking thread groove 31, and the shape and specifications of the positioning column 36 are adapted to the movable circular groove 32. The positioning column 36 is slidably connected to the inner side of the movable circular groove 32, so that the drive column 34, the locking screw 35 and the positioning column 36 can all maintain a stable working state.

[0022] In this embodiment, both the limiting plate 37 and the limiting groove 38 are arranged in a cross shape, and the shape and specifications of the limiting plate 37 are adapted to the cross groove 33. By setting the shape of the limiting plate 37 and the limiting groove 38 in a cross shape, after the limiting plate 37 is embedded in the limiting groove 38, the relative rotation between the abutment body 1 and the implant 2 is restricted under the cooperation and restriction between the two, thereby effectively ensuring the stable connection between the abutment body 1 and the implant 2 and making it less susceptible to the influence of external forces.

[0023] In this embodiment, when the end face of the drive column 34 is flush with the end face of the base head 101, the slot 39 is connected to the combination slot 310.

[0024] It should be noted that in the unlocked state, the end face of the drive post 34 is flush with the end face of the base head 101. At this time, the slot 39 and the combination slot 310 are connected, meaning they are on the same straight line. During installation, the operator simultaneously inserts a flathead screwdriver into both the slot 39 and the combination slot 310. When the operator rotates the screwdriver, the drive post 34 and the base head 101 move synchronously, allowing the base body 1 to achieve a stable threaded connection with the implant 2. After the threaded connection 103 and the threaded connection slot 202 are stably connected, the operator inserts the screwdriver alone into the slot 39. When the operator rotates the screwdriver, it no longer applies rotational force to the base head 101, thus only driving the drive post 34 to rotate.

[0025] In this embodiment, the distance between the bottom surface of the drive column 34 and the bottom surface of the receiving circular groove 3 is the same as the depth of the limiting groove 38, so that when the drive column 34 moves to contact the inner wall end face of the receiving circular groove 3, it can drive the limiting plate 37 to be completely embedded in the limiting groove 38.

[0026] When installing the base body 1, the operator inserts the threaded connection part 103 into the groove of the threaded connection groove 202, and then inserts a flathead screwdriver into both the flathead groove 39 and the combination groove 310. At this time, the operator rotates the flathead screwdriver and drives the base head 101 and the drive column 34 to rotate synchronously, so that the base body 1 rotates as a whole, and the threaded connection part 103 gradually enters the interior of the threaded connection groove 202, so that the base body 1 and the implant 2 can be connected and fixed.

[0027] After the threaded connection between the two is stable, the operator inserts only the end of the slotted screw into the slot 39. Then, the operator rotates the slotted screwdriver so that it drives only the drive post 34 to rotate. The rotation of the drive post 34 drives the locking screw 35 to rotate. With the cooperation of the locking threaded groove 31, the rotation of the locking screw 35 will drive the positioning post 36 to move from one end of the movable circular groove 32 to the other end, thereby causing the limiting plate 37 to move outward along the inner wall of the cross slide groove 33 and enter the limiting groove 38. This allows the limiting plate 37 to cooperate with the limiting groove 38 to stably limit the relative rotation between the abutment body 1 and the implant 2, making the connection stability between the two less susceptible to external forces and improving the stability of the abutment body 1 during use.

[0028] Example 2: This embodiment provides a technical solution based on the above embodiment: the inner walls of the movable circular groove 32 are respectively provided with an upper limiting end face 4 and a lower limiting end face 41. When the positioning column 36 moves to contact the upper limiting end face 4, the outer end face of the driving column 34 is flush with the end face of the base head 101, and the outer side end face of the limiting plate 37 is flush with the end face of the groove opening of the cross slide 33. When the positioning column 36 moves to contact the lower limiting end face 41, the driving column 34 is flush with the inner side end face of the accommodating circular groove 3, and the end face of the limiting plate 37 is in contact with the inner side end face of the limiting groove 38.

[0029] By setting an upper limiting end face 4 and a lower limiting end face 41 on the inner wall of the movable circular groove 32, the axial movement stroke of the positioning column 36 can be precisely mechanically limited, ensuring that the drive column 34 and the limiting plate 37 are accurately positioned in the preset position. This avoids assembly interference and anti-rotation failure caused by the limiting plate 37 extending too far or too far, and also prevents damage to the internal structure caused by over-tightening of the locking screw 35. At the same time, it ensures that the drive column 34 remains flush with the surface of the base head 101 in both the unlocked and locked states, reducing the risk of soft tissue irritation and bacterial retention, and significantly improving the reliability of base installation, ease of operation and long-term stability.

[0030] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dental implant healing composite abutment with a gradient biomimetic micro / nano structure, comprising an abutment body (1) connected to an implant (2), the abutment body (1) comprising an abutment head (101), a transgingival portion (102), and a threaded connection portion (103) arranged sequentially, the implant (2) comprising a mating groove (201) adapted to the transgingival portion (102) and a threaded connection groove (202) adapted to the threaded connection portion (103), characterized in that, The base head (101) has a receiving circular groove (3) on its surface. The bottom surface of the receiving circular groove (3) has a locking thread groove (31) extending into the threaded connection part (103). The bottom end of the locking thread groove (31) has a movable circular groove (32). The bottom end of the movable circular groove (32) has a cross slide groove (33). The inner side of the accommodating circular groove (3) is slidably connected to a drive column (34), the end of the drive column (34) is fixedly connected to a locking screw (35), the end of the locking screw (35) is fixedly connected to a positioning column (36), the end of the positioning column (36) is fixedly connected to a limiting plate (37), and the bottom surface of the threaded connection groove (202) is provided with a limiting groove (38). The end face of the drive column (34) has a slot (39), and the end of the base head (101) has a combination slot (310) corresponding to the slot (39).

2. The dental implant healing composite abutment with a gradient biomimetic micro / nano structure according to claim 1, characterized in that, The shape and specifications of the drive column (34) are adapted to the receiving circular groove (3), the locking screw (35) is slidably connected to the inner side of the locking thread groove (31), the shape and specifications of the positioning column (36) are adapted to the movable circular groove (32), and the positioning column (36) is slidably connected to the inner side of the movable circular groove (32).

3. The dental implant healing composite abutment with a gradient biomimetic micro / nano structure according to claim 2, characterized in that, The limiting plate (37) and the limiting groove (38) are both arranged in a cross shape, and the shape and specifications of the limiting plate (37) are adapted to the cross groove (33).

4. The dental implant healing composite abutment with a gradient biomimetic micro / nano structure according to claim 3, characterized in that, When the end face of the drive column (34) is flush with the end face of the base head (101), the slot (39) is connected to the combination slot (310).

5. The dental implant healing composite abutment with a gradient biomimetic micro / nano structure according to claim 4, characterized in that, The distance between the bottom surface of the drive column (34) and the bottom surface of the accommodating circular groove (3) is the same as the depth of the limiting groove (38).

6. The dental implant healing composite abutment with a gradient biomimetic micro / nano structure according to claim 5, characterized in that, The inner walls of the movable circular groove (32) are respectively provided with an upper limiting end face (4) and a lower limiting end face (41). When the positioning column (36) moves to contact the upper limiting end face (4), the outer end face of the driving column (34) is flush with the end face of the base head (101), and the outer side end face of the limiting plate (37) is flush with the end face of the groove of the cross slide (33). When the positioning column (36) moves to contact the lower limiting end face (41), the driving column (34) is flush with the inner side end face of the accommodating circular groove (3), and the end face of the limiting plate (37) is in contact with the inner side end face of the limiting groove (38).

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