CN214549677U - Grid cap bone nail - Google Patents
Grid cap bone nail Download PDFInfo
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- CN214549677U CN214549677U CN202120358645.8U CN202120358645U CN214549677U CN 214549677 U CN214549677 U CN 214549677U CN 202120358645 U CN202120358645 U CN 202120358645U CN 214549677 U CN214549677 U CN 214549677U
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Abstract
The utility model discloses a net cap bone nail, it contains: the bone nail comprises a bone nail body and a grid-shaped supporting part connected with the top of the bone nail body; the grid-shaped support part comprises: an outer ring and a connecting portion; the outer ring surrounds the top of the bone nail body; the connecting part is radial and extends from the top of the bone nail body to the outer ring so as to connect the top of the bone nail body with the outer ring; the mesh aperture of the mesh-shaped supporting part is a big hole with 2-6 mm. The grid design of the utility model can reduce stress concentration, is beneficial to the integration of the mucous membrane tissue on the surface of the nail part and the lower tissue, so as to convey nutrition interactively, promote bone regeneration and avoid the necrosis of the mucous membrane tissue caused by ischemia; after the latticed bone nail is implanted, certain bone regeneration space can be set up, bone regeneration materials such as bone meal are conveyed to a bone regeneration area through the grid structure, the grid structure is convenient to fix periosteum through modes such as sewing, and the condition that bone meal and periosteum shift in the traditional GBR (bone guaranteed ratio) operation is avoided. The shape of the mesh can also be preformed during the operation according to the defect range.
Description
Technical Field
The utility model relates to the technical field of oral medical equipment, concretely relates to net cap bone nail.
Background
The bone quality and insufficient bone quantity of the edentulous area in the oral treatment seriously affect the proceeding and success rate of the implant operation. Currently, bone augmentation is performed clinically by using titanium nails, titanium meshes, guided bone regeneration GBR (guided bone regeneration GBR), and the like. Wherein the titanium nail can play a role in supporting bone powder and is used for repairing small-range bone defects. The use of the titanium mesh can avoid the problems that the traditional barrier film is difficult to self-form and can not maintain the bone repair space. The GBR technology builds a bone regeneration space through a biological barrier membrane, and blocks epithelial cells or fibroblasts from entering bone defect areas, so that a good regeneration environment is provided for osteogenesis related cells, and bone regeneration is promoted.
However, the long-term clinical effects of titanium nails and titanium meshes still remain to be improved: 1. the surface of the titanium nail has stress to the soft tissue, and the lower part of the soft tissue is easy to be broken due to insufficient blood supply. 2. The problem of biological barrier membrane displacement exists in the traditional GBR operation. 3. The use of titanium mesh has the problem of stress accumulation, which often causes the surface soft tissue to crack and the titanium mesh to be exposed. In the traditional operation, a full-thickness valve is usually adopted to contain a full-layer mucosa and a periosteum in the process of using the titanium mesh, because the aperture of the titanium mesh is small, blood vessels are difficult to communicate tissues above and below the titanium mesh, the valve turning operation range is large, and the situation of postoperative swelling can appear in a patient. When the titanium mesh is used in cooperation with the GBR operation, bone powder needs to be implanted in a bone defect area firstly, and then the titanium mesh is covered, so that the problem of bone powder displacement exists in the process.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel net cap bone nail for among the hyperostosis volume treatment process when jaw bone matter, bone mass are not enough, can solve the easy aversion of bone powder in the GBR art, the poor problem of periosteum retention ability.
In order to achieve the above object, the utility model provides a net cap bone nail, it contains: the bone nail comprises a bone nail body and a grid-shaped supporting part connected with the top of the bone nail body; the lattice-shaped support portion includes: an outer ring and a connecting portion; the outer ring surrounds the top of the bone nail body; the connecting part is radial and extends from the top of the bone nail body to the outer ring so as to connect the top of the bone nail body with the outer ring; the mesh aperture of the latticed supporting part is 2-6 mm.
Preferably, the grid-shaped supporting part further comprises: a reinforcing portion; the reinforcing part is an inner ring surrounding the top of the bone nail body and is arranged between the top of the bone nail body and the outer ring; the reinforcing part is connected with the connecting part.
Preferably, the grid-shaped supporting part is made of a plastic material.
Preferably, the connecting portion and the reinforcing portion have a diameter of 0.5 to 1 mm.
Preferably, the bone nail body comprises: the screw planting part and the smooth part are connected with the top of the screw planting part and the top of the bone nail body.
Preferably, the diameter of the top of the bone nail body is 3-4mm, and the thickness of the top of the bone nail body is 1-2 mm; the height of the smooth part is 2-4mm, and the diameter is 1-2 mm; the height of the spiral planting part is 1-3mm, and the diameter of the spiral planting part is 1-2 mm.
Preferably, the upper part of the grid cap bone nail is covered with a bone repair film, and the bone repair film is sutured and fixed on the grid cap bone nail.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. compare in traditional titanium nail, the utility model discloses a grid design can reduce stress concentration, and latticed structure does benefit to the blood vessel and grows into, carries the nutrition for nail portion surface soft tissue, avoids the soft tissue to lack blood necrosis.
2. Can be earlier according to defective scope in the art, the shape of preforming net after implanting latticed bone nail, can build certain bone regeneration space, through grid structure to bone regeneration regional bone regeneration materials such as bone meal of carrying, avoided in the traditional GBR art, the condition of bone meal, periosteum aversion.
3. The utility model relates to a bone nail which can be artificially built according to needs and has different shapes formed within the bone regeneration space range. The grid-shaped bone nail can be flexibly combined for use, and bone defects in different ranges can be recovered in an individualized way.
4. The utility model discloses a grid cap bone nail adopts degradable material, avoids the secondary operation to take out. And a special surface treatment mode is adopted, a coating with a micro-nano structure is formed on the surface of the material, so that drug loading and growth factor slow release are facilitated, and the bone increment effect is improved.
Drawings
Fig. 1 is a schematic structural view of the grid cap bone nail of the present invention.
Fig. 2 is a side view of the grid cap bone screw shown in fig. 1.
Fig. 3 is a schematic view of a lattice-shaped support in the lattice-capped bone screw shown in fig. 1.
Fig. 4 is a schematic view of a lattice-shaped support provided with a reinforcement.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural view of the grid cap bone nail of the present invention. Fig. 2 is a side view of the grid cap bone screw shown in fig. 1. As shown in fig. 1 and 2, the grid cap bone nail of the present invention comprises: a bone screw body 20 and a lattice-shaped support 10 connected to the top of the bone screw body 20. The side view of the grid cap bone nail is basically T-shaped. As shown in fig. 3, the lattice-shaped support portion 10 includes: an outer race 11 and a connecting portion 12. The outer ring 11 surrounds the top 23 of the bone nail body 20; the connecting portion 12 is radial and extends from the top 23 of the bone screw body 20 to the outer ring 11 to connect the top 23 of the bone screw body 20 and the outer ring 11. The top part 23 of the bone screw body 20 is located at the central part of the grid-shaped support part 10. The lattice-shaped support 10 is formed in a lattice shape having a lattice 30. The lattice cap bone screw shown in fig. 1 has 4 connecting rods at the connecting part 12. The number of connecting rods is not limited to 4. The lattice-shaped supporting portion 10 is made of a plastic material, such as titanium metal, tantalum metal, stainless steel, PEEK, and a degradable material. The degradable material can be natural degradable high molecular material (collagen, chitosan, gelatin, hyaluronic acid, fibroin), natural degradable inorganic material (coral), synthetic degradable high molecular material (polylactic acid, polyglycolic acid, polycaprolactone), synthetic degradable inorganic material (calcium phosphate cement, hydroxyapatite, tricalcium phosphate) and degradable metal (magnesium alloy) according to the source. The ideal degradable biomaterial should have the following characteristics: (1) good physical and mechanical properties and plasticity, plays a supporting role and can change the shape as required; (2) good biocompatibility; (3) bone conduction and osteoinduction, the degradation rate is matched with the bone regeneration and repair rate; (4) has mutually communicated pore diameter and porosity, and is beneficial to the exchange of nutrient substances and metabolic wastes.
The grid-shaped supporting part 10 has certain strength, has the function of building and supporting a bone regeneration space, has plasticity, and can pre-form the bending degree and the shape of the grid-shaped top of the bone nail according to different bone defect ranges. Utilize traditional GBR membrane or tent nail to keep bone regeneration space, can also block the soft tissue for the tissue blood supply of membrane below while keeping barrier membrane soft tissue, long-term placing can lead to the wound to split, increases the infection risk. Because the grid design of the grid-shaped supporting part 10 can enable the upper and lower tissues to be communicated and integrated, and the supporting part 10 has certain elasticity, the stress to soft tissues can be reduced compared with the top of the traditional aporate titanium nail, the situation that the lower part of the soft tissues covering the bone nail is easy to be broken due to insufficient blood supply is avoided, the contact between a periosteum adhesion film and bone powder below the periosteum adhesion film can be ensured, and nutrition is provided to accelerate bone formation.
As shown in fig. 4, to improve the supporting strength, a reinforcing part 13 may be provided on the lattice-shaped supporting part 10. The reinforcing part 13 is arranged between the top part 23 of the bone nail body 20 and the outer ring 11, and the reinforcing part 13 is connected with the connecting part 12 in an inner ring surrounding the top part 23 of the bone nail body 20. More than 1 reinforcing part 13 may be provided as necessary. The reinforcement portion 13 is parallel to the outer ring 11 in shape, and is formed in a closed figure with a gradually decreasing diameter, so that the lattice-shaped support portion 10 can support a bone regeneration space.
In order to improve the manual forming effect of the top of the grid cap bone nail, the grid cap bone nail shown in fig. 1 is not provided with the reinforcing part 13, only the connecting part 12 is reserved to connect the top of the bone nail body 20 with the grid-shaped supporting part 10, the design not only reserves the supporting function of the grid-shaped supporting part 10, but also improves the plasticity of the grid-shaped supporting part 10, and the grid cap is convenient to adjust the bending degree of the grid cap clinically according to the bone defect range.
The shape of the outer ring 11 of the grid-shaped supporting part 10 is divided into a long ellipse, a long strip, an ellipse and the like, and bone nails with different specifications can be selected according to bone defect ranges with different sizes. The grid cap bone nails are implanted through the bone nail body 20 into the jaw bone for retention. The connecting portion 12 and the reinforcing portion 13 have a uniform diameter of about 0.5 to 1 mm. The mesh 30 of the mesh-shaped support part 10 has an aperture of about 2-6mm, and is given flexibility so as to be preformed into different shapes as required to construct a bone regeneration space to be adapted to a bone defect area. When in use, bone regeneration materials such as bone powder and the like can be conveyed into the space supported by the titanium mesh through the mesh, and the mesh 30 with larger aperture improves the plasticity of the titanium mesh.
Referring to fig. 2, the bone screw body 20 is divided into a top portion 23, a smooth portion 22 and a spiral planting portion 21. The top of the bone nail is provided with a pattern, such as a triangular pattern and a cross pattern, so as to facilitate the implantation or the removal in the operation. The diameter of the top 23 of the bone nail body 20 is 3-4mm, the thickness is 1-2mm, the height of the smooth part 22 is 2-4mm, the diameter is 1-2mm, the height of the spiral planting part 21 is 1-3mm, and the diameter is 1-2 mm.
The utility model discloses a latticed bone nail conveniently takes out, cuts the connecting portion 12 that directly links to each other with bone nail body 20 top in the accessible art, can separate bone nail body 20 and latticed supporting part 10, and the substep is taken out.
The upper surface of the grid cap bone nail can adopt special surface treatment technologies such as plasma spraying and the like to obtain a smooth surface with antibacterial performance. The bone nail body 20 can be provided with a micro-nano porous coating structure on the surface through surface treatment methods such as micro-arc oxidation, anodic oxidation, selective laser melting and the like, and medicines for promoting bone formation or antibiosis, growth factors and the like can be loaded in the porous structure, so that the bone increment effect is improved on one hand, and periphytosis caused by bacterial infection is prevented on the other hand.
In some embodiments, the upper part of the grid-shaped bone nails can be covered with a bone repair film to realize the function of the traditional tent nails. The grid structure is convenient for fixing periosteum by means of suturing and the like, so that the problem that the periosteum is displaced in the traditional GBR operation and the mechanical strength is poor and the bone repair space cannot be maintained is solved.
As a preferable example, the grid cap bone nail can use degradable metal such as magnesium alloy or degradable biological ceramic material with proper mechanical strength to replace the traditional titanium alloy, so as to avoid secondary operation removal and reduce operation trauma.
To sum up, the grid design of the utility model can reduce stress concentration, and the grid structure is beneficial to the integration of the mucous membrane tissue on the surface of the nail part and the lower tissue, so as to interactively convey nutrition, promote bone regeneration and avoid the necrosis of the mucous membrane tissue due to ischemia; after the latticed bone nail is implanted, certain bone regeneration space can be set up, bone regeneration materials such as bone meal are conveyed to a bone regeneration area through the grid structure, the grid structure is convenient to fix periosteum through modes such as sewing, and the condition that bone meal and periosteum shift in the traditional GBR (bone guaranteed ratio) operation is avoided. The shape of the mesh can also be preformed during the operation according to the defect range.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (7)
1. A grid cap bone screw, comprising: a bone screw body (20) and a grid-shaped support part (10) connected with the top part (23) of the bone screw body (20); the lattice-shaped support (10) comprises: an outer ring (11) and a connecting portion (12); the outer ring (11) surrounds a top portion (23) of the bone screw body (20); the connecting part (12) is radial and extends from the top (23) of the bone nail body (20) to the outer ring (11) so as to connect the top (23) of the bone nail body (20) with the outer ring (11); the aperture of the grid (30) of the grid-shaped supporting part (10) is 2-6 mm.
2. The grid cap bone nail according to claim 1, characterized in that the grid-like support (10) further comprises: a reinforcement section (13); the reinforcing part (13) is an inner ring surrounding the top part (23) of the bone nail body (20) and is arranged between the top part (23) of the bone nail body (20) and the outer ring (11); the reinforcing part (13) is connected to the connecting part (12).
3. Grid cap bone peg according to claim 1, characterized in that the grid-like support (10) is of a mouldable material.
4. Grid cap bone peg according to claim 2, characterized in that the connecting part (12) and the reinforcement part (13) have a diameter of 0.5-1 mm.
5. The mesh cap bone screw according to claim 1, characterized in that said bone screw body (20) comprises: a spiral planting part (21) and a smooth part (22) connecting the spiral planting part (21) and the top part (23) of the bone nail body (20).
6. The mesh cap bone nail according to claim 5, characterized in that the top (23) of the bone nail body (20) has a diameter of 3-4mm and a thickness of 1-2 mm; the height of the smooth part (22) is 2-4mm, and the diameter is 1-2 mm; the height of the spiral planting part (21) is 1-3mm, and the diameter is 1-2 mm.
7. The grid cap bone nail according to claim 1, wherein an osseous repair film covers the upper part of the grid cap bone nail, and the osseous repair film is fixed on the grid cap bone nail in a suturing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120358645.8U CN214549677U (en) | 2021-02-09 | 2021-02-09 | Grid cap bone nail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120358645.8U CN214549677U (en) | 2021-02-09 | 2021-02-09 | Grid cap bone nail |
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| CN214549677U true CN214549677U (en) | 2021-11-02 |
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| CN202120358645.8U Active CN214549677U (en) | 2021-02-09 | 2021-02-09 | Grid cap bone nail |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112826621A (en) * | 2021-02-09 | 2021-05-25 | 上海交通大学医学院附属第九人民医院 | Grid cap bone nail |
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2021
- 2021-02-09 CN CN202120358645.8U patent/CN214549677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112826621A (en) * | 2021-02-09 | 2021-05-25 | 上海交通大学医学院附属第九人民医院 | Grid cap bone nail |
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