CN219878384U - Magnesium alloy radius distal end intraosseous support implant - Google Patents
Magnesium alloy radius distal end intraosseous support implant Download PDFInfo
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- CN219878384U CN219878384U CN202320865830.5U CN202320865830U CN219878384U CN 219878384 U CN219878384 U CN 219878384U CN 202320865830 U CN202320865830 U CN 202320865830U CN 219878384 U CN219878384 U CN 219878384U
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- China
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- distal radius
- support implant
- radius
- magnesium alloy
- intraosseous
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- 239000007943 implant Substances 0.000 title claims abstract description 50
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 17
- 241000209094 Oryza Species 0.000 claims abstract description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 6
- 235000009566 rice Nutrition 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 12
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 abstract description 12
- 206010037802 Radius fracture Diseases 0.000 abstract description 8
- 238000002513 implantation Methods 0.000 abstract description 7
- 208000010392 Bone Fractures Diseases 0.000 abstract description 6
- 206010017076 Fracture Diseases 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 3
- 230000008468 bone growth Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 210000003857 wrist joint Anatomy 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 208000006820 Arthralgia Diseases 0.000 description 1
- 208000025962 Crush injury Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 201000008482 osteoarthritis Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008467 tissue growth Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 230000000472 traumatic effect Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model relates to a magnesium alloy distal radius intraosseous support implant, belongs to the technical field of bone repair and reconstruction, and solves the problem that distal radius bone defect implantation in the prior art cannot meet biomechanical stability requirements after distal radius fracture reconstruction. The utility model comprises that the radial distal end internal support implant is of a birdcage structure, the birdcage structure comprises an external curved surface frame and an internal aperture support structure, the aperture support structure is in a rice lattice shape, a round hole is arranged in the middle of the rice lattice of the radial distal end internal support implant, and the diameter of the round hole is 2.5-4.5 mm. The utility model can effectively disperse stress and can better meet the biomechanical stability requirement after radius distal fracture reconstruction.
Description
Technical Field
The utility model relates to the technical field of bone repair and reconstruction, in particular to a magnesium alloy distal radius intraosseous support implant.
Background
The distal radius refers to the bone mass region within 3cm from the wrist joint surface of the radius, and the fracture in this region is clinically common, accounting for about 20% of the total fracture, and is most common in the elderly patients suffering from osteoporosis after falling and in the young patients suffering from high-energy trauma. More than 50% of distal radius fractures do not crush fractures and involve the joint surface, and in severe cases, the joint surface collapses and cancellous bone compresses to form a sub-joint bone defect, which has a significant effect on the patient's wrist joint movement. If the treatment of the distal radius fracture is not timely or the treatment method is improper, the distal radius fracture not only can cause wrist pain in a short term, but also can cause wrist stiffness, traumatic osteoarthritis and other complications for a long term, and the normal life ability and the level of a patient are greatly influenced.
The key step of the operation treatment of the distal radius fracture is to restore the flatness and stability of the joint surface, and simultaneously, the steel plate screws are used for internal fixation, support and fixation, and the important factor affecting the stability of the whole structure is whether the bone defect is properly treated or not. The current distal radius bone defect implant materials applied in clinic are difficult to fully meet the biomechanical stability requirement after distal radius fracture reconstruction, unstable distal radius fracture fixation can improve the risks of long-term internal fixation failure and fracture re-collapse, and re-operation treatment is needed when serious.
Disclosure of Invention
In view of the above analysis, the present utility model aims to provide a magnesium alloy distal radius intraosseous support implant for solving the problem that distal radius defect implantation cannot meet the biomechanical stability requirement after distal radius fracture reconstruction.
The utility model provides a magnesium alloy distal radius intra-osseous support implant which comprises a birdcage structure, wherein the birdcage structure comprises an external curved surface frame and an internal aperture support structure, the aperture support structure is in a shape of a rice lattice, a round hole is arranged in the middle of the rice lattice of the distal radius intra-osseous support implant, and the diameter of the round hole is 2.5-4.5 mm.
Further, the upper and lower surfaces of the radial distal inner support implant are in a crisscross solid structure with the bone contacting parts.
Further, the square lattice spacing of the cross solid structure is 2-5 mm, and the thickness of the solid sheet layer of the cross solid structure is 1-2 mm.
Further, the edge of the radius distal end inner support implant is provided with a round angle, and the round angle is 0.5-1 mm in size.
Further, the distal radius endosteal support implant is wedge-shaped.
Further, the wedge angle of the wedge is 5-25 degrees.
Further, the upper surface of the wedge body is a concave curved surface, the long curvature radius of the concave curved surface is 35-50 mm, and the short curvature radius is 20-35 mm.
Further, the side surface of the wedge body is a curved surface, and the radius of the curved surface is 25-35 mm.
Further, the porosity of the distal radius intraosseous support implant is 20% -90%.
Further, the material of the intraosseous support implant is WE43 magnesium-aluminum alloy.
Compared with the prior art, the utility model has at least the following beneficial effects:
the radial far-end internal support implant adopts a birdcage structure, the outside of the radial far-end internal support implant adopts a large frame combined curved surface design, the stress after implantation can be effectively dispersed, the inside of the radial far-end internal support implant adopts a small-aperture support, the space required by bone growth can be provided, and a round hole is designed in the middle of a Mi-shaped lattice of the prosthesis, so that the prosthesis can be matched with a screw for use in implantation, and meanwhile, the stress can be effectively dispersed, so that the radial far-end internal support implant can better meet the biomechanical stability requirement after the fracture of the radial far-end fracture is rebuilt.
In the utility model, the technical schemes can be mutually combined to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, like reference numerals being used to refer to like parts throughout the several views.
FIG. 1 is a schematic view of the overall structural design of a distal radius intra-osseous implant;
FIG. 2 is a schematic view of the overall structural design of the distal radius intra-osseous implant (II);
FIG. 3 is a schematic view of the overall structural design of the distal radius intra-osseous implant (III);
FIG. 4 is a schematic view of the internal structure of a distal radius intraosseous implant;
fig. 5 is a schematic view of the overall structural design of the distal radius intra-osseous Implant (IV).
Detailed Description
The following detailed description of preferred embodiments of the utility model is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the utility model, are used to explain the principles of the utility model and are not intended to limit the scope of the utility model.
1-5, a magnesium alloy distal radius intraosseous support implant (hereinafter referred to as distal radius intraosseous support implant) is disclosed, wherein the intraosseous support implant is made of WE43 magnesium-aluminum alloy and is manufactured in a 3D printing mode.
As shown in fig. 1-3, the distal radius intraosseous support implant is a wedge, the design of the wedge conforms to the physiological construction curve of the human radius, and the wedge angle (wedge angle) alpha is 5-25 degrees. The upper surface of the wedge body adopts a concave curved surface design, the long curvature radius R1 of the concave curved surface is 35-50 mm, and the short curvature radius R2 is 20-35 mm. The long curvature is the curvature in the longitudinal direction of the concave curved surface, and the short curvature is the curvature in the width direction of the concave curved surface. The side surface of the wedge body is designed to be in fit with the side surface of the radius of the human body, and the radius of the side curved surface is 25-35 mm. For convenient implantation, the four sides of the prosthesis are designed with round angles, and the radius of the round angles is 5-10 mm. The whole dimension of the wedge body is 8-20 mm wide, the length L is 10-25 mm, and the height H is 5-20 mm.
As shown in fig. 4, the radial distal end internal support implant adopts a bird cage structure, the external part adopts a large frame combined curved surface design, the stress after implantation can be effectively dispersed, the internal part adopts a small-aperture support, the space required by bone growth can be provided, and a round hole is arranged in the middle of a Mi-shaped lattice of the prosthesis, as shown in fig. 2, the prosthesis can be matched with a screw for use in implantation, and the stress can be effectively dispersed. The diameter D1 of the middle round hole is 2.5-4.5 mm (see FIG. 2). Meanwhile, in order to improve the hole connectivity of the distal radius bone implant, the bone tissue growth and bone healing are facilitated, and meanwhile early failure of the implant caused by local accelerated degradation due to local stress concentration is avoided, so that the structure of the bone implant is further designed. The porous structure can play a good role in force conduction and support, the porous structure can disperse stress, stress concentration is reduced, and meanwhile, the quality of the bone implant material can be reduced. The porous structure is generated based on a three-period minimum curved surface (TPMS), the size of the adopted porous structure unit is 2-8 mm, and the porosity is 20% -90%.
As shown in fig. 5, the upper and lower surfaces of the distal radius inner support implant and the bone contacting portion are designed in a crisscross solid structure. The square space of the cross solid structure is 2-5 mm, the thickness of the solid sheet is 1-2 mm, the joint of each solid is designed with a round angle, and the size of the round angle is 0.5-1 mm.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (10)
1. The magnesium alloy distal radius intraosseous support implant is characterized by comprising a birdcage structure, wherein the birdcage structure comprises an external curved surface frame and an internal aperture support structure, the aperture support structure is in a rice lattice shape, a round hole is arranged in the middle of a rice lattice of the distal radius intraosseous support implant, and the diameter of the round hole is 2.5-4.5 mm.
2. The magnesium alloy distal radius intra-osseous support implant according to claim 1, wherein the upper and lower surfaces of the distal radius intra-osseous support implant have a crisscross solid structure.
3. The magnesium alloy distal radius intraosseous support implant according to claim 2, wherein the square lattice spacing of the cross-shaped solid structure is 2-5 mm, and the solid sheet thickness of the cross-shaped solid structure is 1-2 mm.
4. The magnesium alloy distal radius intra-osseous support implant according to claim 1, wherein the distal radius intra-osseous support implant rim is provided with rounded corners.
5. The magnesium alloy distal radius endosteal support implant of claim 1, wherein the distal radius endosteal support implant is a wedge.
6. The magnesium alloy distal radius intra-osseous support implant according to claim 5, wherein the wedge has a wedge angle of 5-25 °.
7. The magnesium alloy distal radius intraosseous support implant according to claim 5, wherein the wedge upper surface is a concave curved surface, the concave curved surface has a long radius of curvature of 35 to 50mm and a short radius of curvature of 20 to 35mm.
8. The magnesium alloy distal radius intraosseous support implant of claim 5, wherein the side of the wedge is curved, and the radius of the curved surface is 25-35 mm.
9. The magnesium alloy distal radius intra-osseous support implant according to claim 1, wherein the porosity of the distal radius intra-osseous support implant is 20% -90%.
10. The magnesium alloy distal radius intraosseous support implant according to any one of claims 1-9, wherein the intraosseous support implant is made of WE43 magnesium aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320865830.5U CN219878384U (en) | 2023-04-18 | 2023-04-18 | Magnesium alloy radius distal end intraosseous support implant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320865830.5U CN219878384U (en) | 2023-04-18 | 2023-04-18 | Magnesium alloy radius distal end intraosseous support implant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219878384U true CN219878384U (en) | 2023-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320865830.5U Active CN219878384U (en) | 2023-04-18 | 2023-04-18 | Magnesium alloy radius distal end intraosseous support implant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219878384U (en) |
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2023
- 2023-04-18 CN CN202320865830.5U patent/CN219878384U/en active Active
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