Oral tent peg

Abstract

The utility model discloses a tent nail for oral cavity, including the nail column and the nail cap, the top of nail column is equipped with the limit head, is equipped with the blind hole on the top end face of limit head, is equipped with the cone frustum between the lower part of limit head and the stem of nail column, is equipped with the self -tapping thread on the outer wall from the stem lower part of nail column to its end, the end of nail column is set up in the pointed cone structure, the nail cap is set up in the flat dome structure, the nail cap includes the openwork net part and the edge part, the edge part surrounds the outside edge of openwork net part, the middle part of openwork net part of nail cap is equipped with the central hole, the inner wall of central hole is protruding and is equipped with the inclined plane contact part with the taper of cone frustum matching, is equipped with the outer thread on the stem of cone frustum lower end, the inner thread of central hole of nail cap and the outer thread of nail column can be screwed to realize detachable connection with thread connection. The utility model adopts the split type design of nail column and nail cap to realize flexible use, can choose single use bone nail or combined tent nail as needed, simplifies instrument configuration, improves surgical effect, and reduces cost.

Description

Technical Field

[0001] This utility model relates to the field of medical repair tools, and more specifically, to a tent nail for oral cavity use. Background Technology

[0002] Dental implant restoration is a modern method of replacing missing teeth by surgically implanting artificial tooth roots (implants) into the alveolar bone. However, many patients in clinical practice often lack sufficient bone volume at the implant site. Therefore, alveolar bone augmentation surgery is necessary before implant surgery. During alveolar bone augmentation surgery, tented anchors are used to maintain a stable space, resist pressure from the surrounding soft tissues, and provide a long-term stable osteogenic environment. However, traditional tented anchors often use a one-piece design that cannot be disassembled for use or flexibly switched according to surgical needs. Furthermore, if traditional tented anchors use a perforated mesh structure, their fixed overall shape may not be able to accurately adapt to different bone surfaces or soft tissue repair needs, thus affecting blood supply penetration and osteogenic effectiveness. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide an oral tent nail with a split design, which can be used alone or in combination with tent nails as needed, has good flexibility, and can improve surgical results.

[0004] To achieve the above objectives, this utility model provides a nail post and a nail head. The top of the nail post is provided with a limiting head, and a blind hole is opened on the top end face of the limiting head. A frustum portion is provided between the lower part of the limiting head and the rod body of the nail post. A self-tapping thread is provided on the outer wall of the lower part of the rod body to its end. The end of the nail post is set with a pointed cone structure. The nail head is set with a flat dome structure. The nail head includes a hollow mesh portion and an edge portion. The edge portion surrounds the outer edge of the hollow mesh portion. A central hole is opened in the middle of the hollow mesh portion of the nail head. A beveled contact portion matching the taper of the frustum portion is protruded on the inner wall of the central hole. An internal thread is provided at the lower end of the inner wall of the central hole. An external thread is provided on the rod body at the lower end of the frustum portion. The internal thread of the nail head and the external thread of the nail post can be threadedly connected to achieve a detachable connection.

[0005] Preferably, the perforated mesh portion of the nail head is made of metal, polymer, or biodegradable material.

[0006] Preferably, the metal material of the perforated mesh section is titanium or titanium alloy.

[0007] Preferably, the shape of the blind hole is set to a cross shape or a straight line shape.

[0008] Preferably, the top arc angle of the flat dome of the nail head is ≤20°.

[0009] Preferably, the diameter of the nail head is set to 5-10 mm, and the width of the edge of the nail head is 0.3-1 mm.

[0010] Preferably, the length of the nail post is set to 10mm, 8mm or 6mm.

[0011] Preferably, the diameter of the limiting head of the nail post is set to 1.5-3 mm, and the diameter of the rod of the nail post is set to 1-2 mm.

[0012] Preferably, the center diameter of the nail head center hole is adapted to the diameter of the nail post body, and the bottom diameter of the nail head center hole is set to 1-2 mm.

[0013] Preferably, the length of the limiting head of the nail post is set to 0.6-2mm, the length of the frustum portion of the limiting head is set to 0.3-1mm, the length of the self-tapping thread at the lower part of the nail post is 2-4mm, and the length of the pointed cone structure at the end of the nail post is set to 1mm-2mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model features a novel structure and a reasonable design. The separate design of the nail post and nail head enables flexible use. When used alone, the nail post can serve as a bone screw in surgeries such as BBA to fix bone blocks. When combined with the nail post, the nail head forms a tent nail that can be used for bone augmentation surgery. The hollow mesh design of the nail head provides better blood supply, adapts to different bone surface or soft tissue repair needs, and has good osteogenesis effect. The threaded connection between the nail post and nail head ensures good stability and makes operation simple. It meets a variety of clinical needs, improves surgical results, and reduces costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the oral tent nail provided in an embodiment of the present invention;

[0018] Figure 2 This is a top view schematic diagram of the oral tent nail provided in an embodiment of the present utility model;

[0019] Figure 3This is a schematic diagram of the structure of the nail post of the oral tent nail provided in this embodiment of the utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the oral tent nail provided in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the nail head of the oral tent nail provided in this embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the guide drill bit provided in an embodiment of the present invention;

[0023] Figure 7 This is a top view schematic diagram of the guide drill bit provided in an embodiment of this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Please refer to Figure 1 The present invention provides an oral tent nail, including a nail post 1 and a nail head 2. The components of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 3 As shown, the top of the nail post 1 may be provided with a limiting head 11, and a blind hole 111 is provided on the top end face of the limiting head 11. A frustum portion 112 is provided between the lower part of the limiting head 11 and the rod body of the nail post 1. A self-tapping thread 12 is provided on the outer wall from the lower part of the rod body of the nail post 1 to its end. The end of the nail post 1 is provided with a pointed cone structure.

[0027] like Figure 2 As shown, the shape of the blind hole 111 can be set to a cross shape or a straight line shape. In this embodiment, the blind hole 111 is preferably set to a cross shape.

[0028] Depending on the actual needs, the length of nail post 1 can be set to 10mm, 8mm or 6mm.

[0029] In this embodiment, the nail post 1 can be used alone and as a conventional bone nail for surgeries such as BBA (bone splitting surgery). The pointed cone structure and self-tapping thread 12 of the nail post 1 facilitate direct screwing into the bone block, providing stable support for fixing the bone block or assisting in bone augmentation.

[0030] Preferably, the length of the limiting head 11 of the nail post 1 is set to 0.6-2mm, the length of the frustum portion 112 of the limiting head 11 is set to 0.3-1mm, the length of the self-tapping thread 12 at the lower part of the nail post 1 is 2-4mm, and the length of the pointed cone structure at the end of the nail post 1 is set to 1mm-2mm.

[0031] like Figure 4 and Figure 5 As shown, the nail head 2 can be configured as a flat dome structure. The nail head 2 includes a perforated mesh portion 21 and an edge portion 22. The edge portion 22 surrounds the outer edge of the perforated mesh portion 21. A central hole 23 is provided in the middle of the perforated mesh portion 21 of the nail head 2. The inner wall of the central hole 23 is provided with a beveled contact portion 231 that matches the taper of the truncated cone portion 112. The lower end of the inner wall of the central hole 23 is provided with an internal thread 232. The rod at the lower end of the truncated cone portion 112 is provided with an external thread 13. The internal thread 232 of the nail head 2 and the external thread 13 of the nail post 1 can be threadedly connected to achieve a detachable connection.

[0032] The external thread 13 and internal thread 232 at the connection between the nail head 1 and the nail post 2 both adopt a double thread structure. The two are tightened by a torque of no more than 8 N·cm, which can not only ensure that the nail head 2 and the nail post 1 are firmly fixed, but also avoid bone tissue damage due to excessive tightening, thus ensuring the safety of the operation.

[0033] Specifically, the top arc angle of the flat dome of the nail head 2 can be ≤20°. In this embodiment, the top arc angle is set to <17°, which takes into account both spatial support and tissue fit, and reduces stimulation to the surrounding soft tissue.

[0034] Preferably, the material of the perforated mesh portion 21 of the nail head 2 can be set as a metal material, a polymer material, or a biodegradable material.

[0035] In this embodiment, the hollow mesh part 21 is made of metal, preferably titanium or titanium alloy.

[0036] Preferably, the diameter of the nail head 2 is set to 5-10 mm, and the width of the edge portion 22 of the nail head 2 is 0.3-1 mm.

[0037] In this embodiment, the diameter of the limiting head 11 of the nail post 1 is set to 1.5-3mm, and the diameter of the rod body of the nail post 1 is set to 1-2mm.

[0038] Furthermore, the center diameter of the center hole 23 of the nail head 2 is adapted to the diameter of the nail post 1, and the bottom diameter of the center hole 23 of the nail head 2 is set to 1-2 mm.

[0039] In practical implementation, a guide drill bit 3 with a bottom diameter of 1mm can be used first (e.g., Figure 6 and Figure 7As shown, the alveolar bone cavity is prepared by guiding the pin post 1 and the pin cap 2, and then the pin post 1 and the pin cap 2 are screwed together to form a tent pin. The tent pin is then inserted into the prepared cavity, thereby providing a stable space for bone graft material during bone augmentation surgery. The flat dome structure of the pin cap 2 can avoid mucosal compression and reduce the risk of postoperative perforation. The hollow mesh part 21 simulates the function of a small titanium mesh, allowing blood and tissue to grow in, promoting blood supply and bone regeneration. The edge part 22 also provides additional support area.

[0040] The diameter of the guide drill bit 3 is usually 0.2 mm smaller than the diameter of the rod of the nail post 1. The tip of the guide drill bit 3 is set as a triangular shape. The tail end of the guide drill bit 3 can be inserted into the planting machine or a low-speed machine for driving. The length of the guide drill bit 3 can be 21 mm or 25 mm. In this embodiment, its length is not limited.

[0041] In summary, this utility model adopts a separate design of the nail post and nail head, which enables flexible use. When used alone, the nail post can be used as a bone screw in surgeries such as BBA to fix bone blocks. The nail head and nail post are combined to form a tent nail, which can be used for bone augmentation surgery. The hollow mesh design of the nail head can provide better blood supply, adapt to different bone surface or soft tissue repair needs, and has good osteogenesis effect. The threaded connection between the nail post and nail head has good stability, is easy to operate, meets a variety of clinical needs, improves surgical results, and reduces costs.

[0042] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A tent peg for oral cavity use, characterized in that: The device includes a post and a head. The top of the post has a limiting head with a blind hole on its top surface. A truncated cone portion is provided between the lower part of the limiting head and the post body. The lower part of the post body has a self-tapping thread on its outer wall from the end to the tip. The end of the post is a pointed cone structure. The head has a flat dome structure and includes a perforated mesh portion and an edge portion. The edge portion surrounds the outer edge of the perforated mesh portion. A central hole is provided in the middle of the perforated mesh portion of the head. The inner wall of the central hole has a beveled contact portion that matches the taper of the truncated cone portion. The lower end of the inner wall of the central hole has an internal thread. The lower end of the post body of the truncated cone portion has an external thread. The internal thread of the head and the external thread of the post can be threaded together to achieve a detachable connection.

2. The oral tent nail according to claim 1, characterized in that: The perforated mesh portion of the nail head is made of metal, polymer, or biodegradable material.

3. The oral tent nail according to claim 2, characterized in that: The metal material of the perforated mesh section is set as titanium or titanium alloy.

4. The oral tent peg according to claim 1, characterized in that: The shape of the blind hole is set to a cross shape or a straight line shape.

5. The oral tent peg according to claim 1, characterized in that: The top arc angle of the flat dome of the nail head is ≤20°.

6. The oral tent nail according to claim 1, characterized in that: The diameter of the nail head is set to 5-10 mm, and the width of the edge of the nail head is 0.3-1 mm.

7. The oral tent peg according to claim 1, characterized in that: The length of the nail post is set to 10mm, 8mm or 6mm.

8. The oral tent peg according to claim 1, characterized in that: The diameter of the limiting head of the nail post is set to 1.5-3mm, and the diameter of the rod of the nail post is set to 1-2mm.

9. A tenting nail for oral cavity use according to claim 8, characterized in that: The center diameter of the central hole of the nail head is adapted to the diameter of the nail post body, and the bottom diameter of the central hole of the nail head is set to 1-2 mm.

10. A tenting nail for oral cavity use according to claim 1, characterized in that: The length of the limiting head of the nail post is set to 0.6-2mm, the length of the frustum portion of the limiting head is set to 0.3-1mm, the length of the self-tapping thread at the bottom of the nail post is 2-4mm, and the length of the pointed cone structure at the end of the nail post is set to 1mm-2mm.

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