CN215130919U - Acetabular cup with tantalum coating - Google Patents
Acetabular cup with tantalum coating Download PDFInfo
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- CN215130919U CN215130919U CN202120227402.0U CN202120227402U CN215130919U CN 215130919 U CN215130919 U CN 215130919U CN 202120227402 U CN202120227402 U CN 202120227402U CN 215130919 U CN215130919 U CN 215130919U
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- tantalum coating
- acetabular cup
- porous structure
- structure layer
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Abstract
The utility model discloses an acetabular cup with tantalum coating, acetabular cup include metal base member, porous structure layer and tantalum coating, and metal base member is the hemisphere, and the metal base member inboard forms the holding tank, and the holding tank is inside to be used through inside lining and bulb cooperation, and the metal base member outside is equipped with porous structure layer, has seted up a plurality of micropores on porous structure layer inside and the surface, and the porous structure layer outside has tantalum coating through the even coating of chemical vapor deposition method. It has the advantages of high biocompatibility, strong osseointegration capability, long-term biological stability and the like.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to acetabular cup with tantalum coating.
Background
The currently applied materials of the acetabular cup prosthesis mainly comprise metal materials, polyethylene materials and ceramic materials, and the metal materials become important materials of the acetabular cup prosthesis due to the advantages of high strength, high toughness, easiness in processing and fatigue resistance. The titanium alloy material has excellent mechanical property, corrosion resistance and biocompatibility, is the metal material for surgical implants which is most widely applied and technically mature in China, but the titanium alloy is easy to wear, and easily causes the penetration of particles, so that soft tissues near the implants are blackened.
In the prior art, the surface of an implant is usually modified by adopting a plasma spraying technology, but a coating formed on the surface of the implant after the plasma spraying technology is treated is poor in combination with a matrix, so that the coating is easy to peel off, inflammation is caused to occur near an implanted part, the implant is loosened, the success rate of implantation is influenced, and meanwhile, the plasma spraying technology has relatively high cost and low material utilization rate; in addition, the implant has poor bioactivity, poor combination effect with bone tissues of an implanted part, high elastic modulus of the implant, and easy stress shielding phenomenon, so that bone absorption is caused to further cause the implant to be loosened.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the prior acetabular cup prosthesis has poor biocompatibility and is easy to loosen and fall off after being implanted and needs to be taken out by a secondary operation, the utility model aims to provide an acetabular cup with a tantalum coating, which has the advantages of high biocompatibility, strong bone combination capability, long-term biological stability and the like.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an acetabular cup with tantalum coating, acetabular cup includes metal base, porous structure layer and tantalum coating, metal base is the hemisphere, the inboard holding tank that forms of metal base, the holding tank is inside to be used through inside lining and bulb cooperation, the metal base outside is equipped with porous structure layer, a plurality of micropores have been seted up on porous structure layer inside and the surface, the porous structure layer outside has tantalum coating through the even coating of Chemical Vapor Deposition (CVD) method.
The further improvement is that the thickness of the porous structure layer is 1-2mm, and the thickness of the tantalum coating layer is 100-500 μm.
The further improvement is that the pore diameter of the micropores in the porous structure layer is 200-800 μm. In actual use, a piece of sample bone is taken from the femoral greater tuberosity of a patient according to the hip joint replacement part of the patient, the porosity and the micropore aperture size of the sample bone are collected, and the micropore aperture size and the micropore distribution in the porous structure layer are determined according to the obtained data of the porosity and the micropore aperture size.
The further improvement is that the metal matrix is a titanium alloy matrix, and the porous structure layer is a titanium alloy porous layer.
The further improvement is that the material of the metal matrix and the porous structure layer is Ti6Al4V。
In a further improvement, the accommodating groove is of a hemispherical structure or a conical structure. During the use, install in the holding tank of metal base member inboard rather than the shape assorted and have the inside lining of certain compression plasticity, inside lining outside one side is the conical surface, and one side is the sphere, has guaranteed the stable connection between inside lining and the holding tank, then inserts the bulb to the inside lining in, bulb and inside lining relative slip.
The further improvement is that the metal matrix and the porous structure layer are both formed by 3D printing. The metal substrate and the porous structure layer are prepared by adopting a 3D printing and forming process, the metal substrate and the porous structure layer are combined closely, the service life of the acetabular cup is long, the production automation degree is high, the dosage and the size are strictly controlled, and the prepared acetabular cup is high in precision.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses in adopt 3D to print forming process and prepare metal substrate and porous structure layer, production degree of automation is high, both combine closely, quantity and size strict control, the implant is accurate higher, produce no waste material, need not use special mould, the microporous structure on porous structure layer inside and the surface can reduce the weight of implant, also for the new growth bone tissue grow in provide the passageway, increased the area of contact of implant and planting area tissue simultaneously, promote the interface bonding ability, make bone tissue grow in and form mechanical closure, bonding strength promotes by a wide margin, effectively reduce not hard up production; the metal tantalum has excellent corrosion resistance, stable biological characteristics and unique structural properties, can make up the defect that a base titanium alloy material is poor in corrosion resistance and wear resistance, and then the tantalum is deposited on the surface of a porous structural layer by using a chemical vapor deposition method to obtain a tantalum coating structure. The utility model provides an acetabular cup has excellent biocompatibility and osteogenesis inducible ability, and bone combination ability is strong to have long-term biostability, solved traditional acetabular cup false body biocompatibility poor, easily become flexible after implanting, drop, need the problem that the secondary operation was taken out.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the acetabular cup of the invention without a tantalum coating applied thereto;
FIG. 2 is a schematic view of an acetabular cup having a tantalum coating in accordance with the present invention;
wherein, the specific reference numbers are: the metal substrate 1, the holding tank 2, the porous structure layer 3, the tantalum coating 4.
Detailed Description
The embodiment of the utility model discloses acetabular cup with tantalum coating, acetabular cup includes metal base member 1, porous structure layer 3 and tantalum coating 4, metal base member 1 is the hemisphere, 1 inboard formation holding tank 2 of metal base member, holding tank 2 is inside to be used through inside lining and bulb cooperation, the 1 outside of metal base member is equipped with porous structure layer 3, a plurality of micropores have been seted up on porous structure layer 3 inside and the surface, the even coating of chemical vapor deposition method has tantalum coating 4 in the porous structure layer 3 outside.
Wherein, the thickness of the porous structure layer 3 is 1-2mm, and the thickness of the tantalum coating layer 4 is 100-500 μm.
Wherein, the pore diameter of the micropores in the porous structure layer 3 is 200-800 μm. In practical use, a piece of sample bone is taken from the femoral greater tuberosity of a patient according to the hip joint replacement part of the patient, the porosity and the micropore diameter of the sample bone are collected, and the micropore diameter and the micropore distribution of the porous structure layer 3 are determined according to the obtained data of the porosity and the micropore diameter.
Wherein, the metal matrix 1 is a titanium alloy matrix, and the porous structure layer 3 is a titanium alloy porous layer.
Wherein, the material of the metal matrix 1 and the porous structure layer 3 is Ti6Al4V。
Wherein, the accommodating groove 2 has a hemispherical structure or a conical structure. During the use, install in the holding tank 2 of metal substrate 1 inboard rather than the shape assorted and have the inside lining of certain compression plasticity, inside lining outside one side is the conical surface, and one side is the sphere, has guaranteed the stable connection between inside lining and the holding tank 2, then inserts the bulb to the inside lining in, bulb and inside lining relative slip.
Wherein, metal substrate 1 and porous structure layer 3 are all through 3D printing shaping. The metal substrate 1 and the porous structure layer 3 are prepared by adopting a 3D printing and forming process, the metal substrate and the porous structure layer are combined closely, the service life of the acetabular cup is long, the production automation degree is high, the dosage and the size are strictly controlled, and the prepared acetabular cup is high in precision.
The utility model discloses in adopt 3D to print forming process and prepare metal substrate 1 and porous structure layer 3, production degree of automation is high, both combine closely, quantity and size strict control, the implant is accurate higher, produce no waste material, the microporous structure on porous structure layer 3 inside and the surface can reduce the weight of implant, also for the new bone tissue grow in provide the passageway, increased the area of contact of implant and planting regional tissue simultaneously, promote the interface bonding ability, make the bone tissue grow in and form mechanical closure, bonding strength promotes by a wide margin, effectively reduce not hard up production; the metal tantalum has excellent corrosion resistance, stable biological characteristics and unique structural properties, can make up the defect of poor corrosion resistance and wear resistance of a base titanium alloy material, adopts a chemical vapor deposition method to deposit tantalum on the surface of the porous structural layer 3 to obtain a tantalum coating 4 structure, reduces the elastic modulus of an implant, increases the integration capacity of bone tissues after the implant, and improves the long-term biological stability of the acetabular cup prosthesis. The utility model discloses well acetabular cup who makes has excellent biocompatibility and osteogenesis induction ability, and bone union ability is strong to have long-term biostability, solved traditional acetabular cup false body biocompatibility poor, after implanting easily not hard up, drop, need the problem that the secondary operation was taken out.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (7)
1. The acetabulum cup with the tantalum coating is characterized by comprising a metal base body, a porous structure layer and the tantalum coating, wherein the metal base body is hemispherical, an accommodating groove is formed in the inner side of the metal base body, the accommodating groove is used by matching a ball head with an inner lining, the porous structure layer is arranged on the outer side of the metal base body, a plurality of micropores are formed in the porous structure layer and on the outer surface of the porous structure layer, and the tantalum coating is uniformly deposited on the outer side of the porous structure layer through a chemical vapor deposition method.
2. The acetabular cup with tantalum coating of claim 1, wherein the thickness of the porous structural layer is 1-2mm and the thickness of the tantalum coating is 100-500 μm.
3. The acetabular cup with the tantalum coating of claim 1 or 2, wherein the pore size of the micropores in the porous structural layer is 200-800 μm.
4. The acetabular cup with tantalum coating of claim 1, wherein said metal substrate is a titanium alloy substrate and said porous structural layer is a titanium alloy porous layer.
5. The acetabular cup with tantalum coating of claim 4, wherein the metal substrate and the porous structural layer are Ti6Al4V。
6. The acetabular cup with tantalum coating of claim 1, wherein said receiving groove is a hemispherical structure or a conical structure.
7. The acetabular cup with tantalum coating of claim 1, wherein said metal substrate and said porous structural layer are each formed by 3D printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120227402.0U CN215130919U (en) | 2021-01-27 | 2021-01-27 | Acetabular cup with tantalum coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120227402.0U CN215130919U (en) | 2021-01-27 | 2021-01-27 | Acetabular cup with tantalum coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215130919U true CN215130919U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120227402.0U Active CN215130919U (en) | 2021-01-27 | 2021-01-27 | Acetabular cup with tantalum coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215130919U (en) |
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2021
- 2021-01-27 CN CN202120227402.0U patent/CN215130919U/en active Active
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