Tent nail for increasing amount of oral implanted bones

Abstract

The tent nail comprises a nail point structure, a connecting structure and a nail cap structure which are sequentially arranged from bottom to top, the nail point structure is conical and comprises a nail point lower part and a nail point upper part, external threads are arranged on the surface of the nail point lower part, a first groove with an upward opening is formed in the nail point structure, a first threaded hole is formed in the lower part of the first groove, and a first counter bore is formed in the upper part of the first groove; the connecting structure comprises a connecting screw rod and a connecting body, the lower portion of the connecting screw rod is provided with an external thread matched with the first threaded hole, and the connecting body is in a circular truncated cone shape; a second groove with an upward opening is formed in the connector, a second threaded hole is formed in the lower part of the second groove, and a second counter bore is formed in the upper part of the second groove; the nail cap structure comprises a nail cap screw and a nail cap body, external threads matched with the second threaded hole are arranged on the lower portion of the nail cap screw, and a third counter bore is formed in the nail cap body. The utility model solves the problem that the clinical application of the titanium mesh is limited; the height of the titanium mesh can be adjusted individually, and trauma in the operation is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of oral medicine technology, specifically relating to a tent nail used for bone augmentation in oral implants. Background Technology

[0002] Following tooth loss, alveolar bone undergoes secondary resorption and atrophy, gradually leading to changes such as reduced alveolar ridge width and insufficient height over time. The quality and volume of alveolar bone in the implantation site are crucial factors affecting implant placement, initial stability, and soft tissue contour restoration—all key aspects of implant restoration outcomes. Therefore, the regeneration and reconstruction of alveolar bone defects in the implantation site is a critical and challenging aspect of dental implantology.

[0003] Guided bone regeneration (GBR) is the most common and longest-used treatment for repairing various peri-implant bone defects. In cases of large-scale bone defects, titanium mesh offers unique advantages in GBR due to its stability, space maintenance, and ability to support blood supply. Currently, titanium mesh is typically only fixed with implants. However, when encountering large tooth defects that cannot be simultaneously implanted, titanium mesh cannot be fixed, limiting its clinical application. Existing tent-type implants do not allow for height adjustment during surgery based on the actual defect situation, thus preventing personalized adjustment of the bone formation space.

[0004] For example, Chinese utility model patent CN202120926945.1 discloses a tent pin for supporting and maintaining the space of a GBR bone graft. It includes a tent pin body, a tent pin head at the top, a first connecting portion fixedly connected to the bottom of the tent pin head, a smooth pin body fixedly connected to the bottom of the first connecting portion, a second connecting portion fixedly connected to the bottom of the smooth pin body, and a threaded pin body fixedly connected to the bottom of the second connecting portion. A fixing circular hole is provided inside the tent pin head, with a slotted fixing groove fixedly connected to each side of the fixing circular hole, and multiple staggered fixing grooves evenly distributed around the fixing circular hole. The depth of the slotted fixing groove is two-thirds of the fixing circular hole. The threaded pin body secures the tent pin body, while the smooth pin body facilitates removal of the tent pin body, effectively reducing damage to the new bone during removal and improving the overall quality of the dental implant to some extent, making it worthy of promotion. However, this tent pin cannot be adjusted in height during surgery according to the actual defect situation.

[0005] Therefore, there is a need to design an oral medical device that can still fix the titanium mesh when the tooth loss is large and whose height can be adjusted in a personalized way. Summary of the Invention

[0006] The purpose of this invention is to provide a tent pin for bone augmentation in dental implants, in order to solve the problems mentioned in the background art, such as the inability to fix titanium mesh when encountering large tooth defects that cannot be implanted simultaneously, thus limiting clinical application, and the inability of existing tent pins to adjust the bone formation height according to the actual bone defect.

[0007] To achieve the above objectives, this utility model provides a tent nail for bone augmentation in oral implants, comprising a nail tip structure, a connecting structure, and a nail head structure arranged sequentially from bottom to top;

[0008] The nail tip structure is an inverted cone shape, including an integrally formed lower part and an upper part of the nail tip. The surface of the lower part of the nail tip is provided with external threads, and the surface of the upper part of the nail tip is smooth. The nail tip structure is provided with a first groove along the axis of the nail tip structure and opening upward. The lower part of the first groove is a first threaded hole, and the first threaded hole is provided with internal threads. The upper part of the first groove is a first countersunk hole for rotating and removing the entire nail tip structure.

[0009] The connecting structure includes an integrally formed connecting screw and a connecting body with the same axis. The connecting screw is located below the connecting body. The lower part of the connecting screw is provided with an external thread that matches the internal thread on the first threaded hole. The length of the connecting screw is greater than the depth of the first countersunk hole, and the depth of the first groove is greater than or equal to the length of the connecting screw. The connecting body is in the shape of an inverted frustum. The connecting body is provided with a second groove along the axis of the connecting structure and opening upward. The lower part of the second groove is a second threaded hole with an internal thread. The upper part of the second groove is a second countersunk hole for rotating and removing the entire connecting structure.

[0010] The nail head structure includes an integrally formed nail head screw and a nail head body with the same axis. The nail head screw is located below the nail head body. The lower part of the nail head screw is provided with an external thread that matches the internal thread on the second threaded hole. The length of the nail head screw is greater than the depth of the second countersunk hole. The depth of the second groove is greater than or equal to the length of the nail head screw. The outer diameter of the nail head body is greater than the outer diameter of the nail head screw. The nail head body is provided with a third countersunk hole along the axis of the nail head structure and opening upward for rotating and removing the entire nail head structure.

[0011] In one specific embodiment, the first countersunk hole, the second countersunk hole, and the third countersunk hole are all internal hexagonal countersunk holes.

[0012] In one specific embodiment, the diameter of the lower surface of the connector is the same as the diameter of the upper surface of the nail tip structure.

[0013] In one specific implementation, the tent pin used for the dental implant bone augmentation includes multiple connection structures of varying heights.

[0014] In one specific implementation, the tent pin used for the dental implant bone augmentation includes multiple pin tip structures of varying heights.

[0015] In one specific embodiment, the upper surface of the connecting structure is further provided with a ring of upwardly protruding bosses for fixing the titanium mesh; the bottom of the nail head body is provided with a nail head groove that matches the bosses.

[0016] In one specific embodiment, the height of the boss is 0.15 to 0.3 mm.

[0017] In one specific embodiment, the lower part of the nail tip has a height of 3-5 mm, the upper part of the nail tip has a height of 1-3 mm, the connector has a height of 1-4 mm, and the diameter of the connector has a diameter of 2.6-4 mm; the nail head body has a height of 1-2 mm, and the diameter of the nail head body has a diameter of 2.6-5 mm.

[0018] In one specific embodiment, the size of the first countersunk hole is larger than the sizes of the second and third countersunk holes.

[0019] In one specific embodiment, the diameter of the upper part of the nail tip is 2.2 to 3.8 mm.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This invention solves the problem that titanium mesh cannot be fixed when there is a large tooth defect that cannot be implanted at the same time, thus limiting the clinical application of titanium mesh.

[0022] This invention allows for personalized adjustment of the titanium mesh fixation height by selecting connection structures with different connector heights. Furthermore, it enables convenient adjustment of the overall height during surgery based on the actual bone defect, allowing for personalized adjustment of the bone formation space and reducing surgical trauma.

[0023] When encountering large-scale bone defects in the oral cavity, existing bone augmentation methods are expensive, often require the opening of a second surgical area, and involve complex surgical procedures. This utility model has a simple structure, is easy to install and disassemble, effectively reduces surgical costs, and saves surgical time.

[0024] This invention can be used in conjunction with titanium mesh or applied independently.

[0025] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0027] Figure 1 This is an exploded view of one embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the nail tip structure according to an embodiment of this utility model;

[0029] Figure 3 This is a top view of the nail tip structure according to an embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional view of the connection structure according to an embodiment of the present invention;

[0031] Figure 5 This is a top view of the connection structure according to an embodiment of the present invention;

[0032] Figure 6 This is a cross-sectional view of a nail head structure according to an embodiment of the present invention;

[0033] Figure 7 This is a top view of a nail head structure according to an embodiment of the present invention;

[0034] Among them, 1. nail tip structure; 2. connecting structure; 3. nail head structure; 11. lower part of nail tip; 12. upper part of nail tip; 13. first groove; 131. first threaded hole; 132. first countersunk hole; 21. connecting screw; 22. connecting body; 23. second groove; 231. second threaded hole; 232. second countersunk hole; 31. nail head screw; 32. nail head body; 33. third countersunk hole. Detailed Implementation

[0035] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0036] Example 1

[0037] This utility model provides a tent nail for bone augmentation in oral implants, comprising a nail tip structure 1, a connecting structure 2, and a nail head structure 3 arranged sequentially from bottom to top;

[0038] The nail tip structure 1 is an inverted cone shape, including an integrally formed lower nail tip 11 and upper nail tip 12. The surface of the lower nail tip is provided with external threads, and the surface of the upper nail tip is smooth. The nail tip structure is provided with a first groove 13 along the axis of the nail tip structure and opening upward. The lower part of the first groove is a first threaded hole 131, and the first threaded hole is provided with internal threads. The upper part of the first groove is a first countersunk hole 132 for rotating and removing the entire nail tip structure 1.

[0039] The connecting structure 2 includes an integrally formed connecting screw 21 and a connecting body 22 with the same axis. The connecting screw is located below the connecting body. The lower part of the connecting screw is provided with an external thread that matches the internal thread on the first threaded hole. The length of the connecting screw is greater than the depth of the first countersunk hole, and the depth of the first groove is greater than or equal to the length of the connecting screw. The connecting body is in the shape of an inverted frustum. The connecting body is provided with a second groove 23 along the axis of the connecting structure and opening upward. The lower part of the second groove is a second threaded hole 231 with an internal thread. The upper part of the second groove is a second countersunk hole 232 for rotating and removing the entire connecting structure 2.

[0040] The nail head structure 3 includes an integrally formed nail head screw 31 and a nail head body 32 with the same axis. The nail head screw is located below the nail head body. The lower part of the nail head screw is provided with an external thread that matches the internal thread on the second threaded hole. The length of the nail head screw is greater than the depth of the second countersunk hole. The depth of the second groove is greater than or equal to the length of the nail head screw. The outer diameter of the nail head body is greater than the outer diameter of the nail head screw. The nail head body is provided with a third countersunk hole 33 along the axis of the nail head structure and opening upward for rotating and removing the entire nail head structure 3.

[0041] The first countersunk hole 132, the second countersunk hole 232, and the third countersunk hole 33 are all internal hexagon countersunk holes. The design of internal hexagon countersunk holes allows for easy removal using only a regular internal hexagon screwdriver.

[0042] The diameter of the lower surface of the connector 22 is the same as the diameter of the upper surface of the nail tip structure 1.

[0043] The tent-shaped staples used for bone augmentation in oral implantation include multiple connecting structures of varying heights. The design of multiple connecting structures with different heights allows for easy adjustment of the height according to the specific circumstances during surgery.

[0044] The tent-shaped staples used for bone augmentation in oral implantation include multiple staple tip structures of varying heights 1. This facilitates preliminary selection before surgery.

[0045] The upper surface of the connecting structure 2 is also provided with a ring of upward-protruding bosses for fixing the titanium mesh; the bottom of the nail head body is provided with a nail head groove that matches the bosses. The design of the bosses is beneficial to the stability of the titanium mesh when placed on the connecting structure, thereby facilitating the installation of the titanium mesh.

[0046] The height of the boss is 0.15 to 0.3 mm.

[0047] The lower part 11 of the nail tip has a height of 3-5 mm, and the upper part 12 of the nail tip has a height of 1-3 mm; the connector 22 has a height of 1-4 mm and a diameter of 2.6-4 mm; the nail head body 32 has a height of 1-2 mm and a diameter of 2.6-5 mm. The nail head structure 3 with a diameter of 2.6-4 mm is mainly used to fix the titanium mesh. Because the titanium mesh has strong space retention, it does not require the expansion of the tent nail head to increase the bone formation space, thus avoiding excessive tension that could cause wound dehiscence. The nail head structure 3 with a diameter of 4-5 mm is mainly used for bone augmentation using the tent nail and tent screw technology alone. The expansion of the nail head supports the upper soft tissue and enhances space retention.

[0048] The first countersunk hole is larger than the second and third countersunk holes. The first countersunk hole has relatively higher strength, and its larger size facilitates installation and disassembly, resulting in a better fastening effect for the nail tip structure 1.

[0049] The diameter of the upper part of the nail tip is 2.2 to 3.8 mm.

[0050] The bone grafting method for bone defects using this invention is simple and easy to perform. Furthermore, during the second-stage surgery, only a simple flap can be made at the alveolar ridge crest to remove the titanium mesh and tented post. The space occupied by the tented post serves as the implant site, significantly reducing the surgical wound. In addition, the overall structure of this invention has a certain taper, preventing damage to excess bone during removal.

[0051] When using this invention, after disinfection and draping, local anesthesia is performed using articaine. The alveolar ridge crest is cut open, the flap is turned, and granulation tissue is scraped. A modified drill with a shape similar to the screw tip structure is used as a guide drill. The diameter of the modified drill is smaller than the diameter of the upper part of the screw tip. Based on the preoperative CBCT, a screw tip structure of appropriate height is initially selected and implanted. The implantation position is the future implant position. Connecting structures of different heights are selected according to the actual situation. The connecting structures are implanted by connecting screws. Bone powder is placed around the tent screw. A suitable pre-made titanium mesh is selected according to the tooth position and the required increase. The pre-made titanium mesh is fixed by the screw cap structure. Finally, a collagen membrane is covered on the surface, and tension-reducing sutures are made.

[0052] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions and substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A tent peg for use in oral implant bone augmentation, characterized in that, The tent peg comprises, from bottom to top, a nail tip structure (1), a connecting structure (2) and a nail cap structure (3); The nail tip structure (1) is in an inverted conical shape, comprising a nail tip lower part (11) and a nail tip upper part (12) which are integrally formed, the surface of the nail tip lower part is provided with external threads, and the surface of the nail tip upper part is smooth; the nail tip structure is provided with a first groove (13) along the axial line of the nail tip structure and opening upward, the lower part of the first groove is a first threaded hole (131), the first threaded hole is provided with internal threads, and the upper part of the first groove is a first counterbore (132) for rotating and removing the entire nail tip structure (1); The connecting structure (2) comprises a connecting screw (21) and a connecting body (22) which are integrally formed and have the same axial line, the connecting screw is arranged below the connecting body, the lower part of the connecting screw is provided with external threads matched with the internal threads of the first threaded hole, the length of the connecting screw is greater than the depth of the first counterbore, the depth of the first groove is greater than or equal to the length of the connecting screw, and the connecting body is in an inverted circular table shape; the connecting body is provided with a second groove (23) along the axial line of the connecting structure and opening upward, the lower part of the second groove is a second threaded hole (231), the second threaded hole is provided with internal threads, and the upper part of the second groove is a second counterbore (232) for rotating and removing the entire connecting structure (2); The nail cap structure (3) comprises a nail cap screw (31) and a nail cap body (32) which are integrally formed and have the same axial line, the nail cap screw is arranged below the nail cap body, the lower part of the nail cap screw is provided with external threads matched with the internal threads of the second threaded hole, the length of the nail cap screw is greater than the depth of the second counterbore, the depth of the second groove is greater than or equal to the length of the nail cap screw, the outer diameter of the nail cap body is greater than the outer diameter of the nail cap screw, and the nail cap body is provided with a third counterbore (33) along the axial line of the nail cap structure and opening upward for rotating and removing the entire nail cap structure (3); The tent peg for oral implant bone augmentation comprises a plurality of connecting structures (2) with different heights; The tent peg for oral implant bone augmentation comprises a plurality of nail tip structures (1) with different heights.

2. The tent peg for oral implant bone augmentation use according to claim 1, wherein, The first counterbore (132), the second counterbore (232) and the third counterbore (33) are all internal hexagonal counterbores.

3. The tent peg for dental implant bone augmentation use according to claim 1, wherein The lower surface of the connecting body (22) has the same diameter as the upper surface of the nail tip structure (1).

4. The tent peg for dental implant bone augmentation use according to claim 1, wherein The upper surface of the connecting structure (2) is further provided with a ring of upwardly protruding bosses for fixing a titanium mesh; the bottom of the nail cap body is provided with a nail cap groove matched with the bosses.

5. Tent peg for oral implant bone augmentation according to claim 4, characterized in that The height of the bosses is 0.15-0.3 mm.

6. The tent peg for dental implant bone augmentation use according to claim 1, wherein The height of the nail tip lower part (11) is 3-5 mm, the height of the nail tip upper part (12) is 1-3 mm, the height of the connecting body (22) is 1-4 mm, and the diameter of the connecting body is 2.6-4 mm; the height of the nail cap body (32) is 1-2 mm, and the diameter of the nail cap body (32) is 2.6-5 mm.

7. The tent peg for dental implant bone augmentation use according to claim 1, wherein The size of the first counterbore is greater than the size of the second counterbore and the third counterbore.

8. The tent peg for dental implant bone augmentation according to any one of claims 1 to 7, characterized in that The diameter of the nail tip upper part is 2.2-3.8 mm.

Images