CN104840275B - A kind of artificial hip joint - Google Patents
A kind of artificial hip joint Download PDFInfo
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- CN104840275B CN104840275B CN201510266807.4A CN201510266807A CN104840275B CN 104840275 B CN104840275 B CN 104840275B CN 201510266807 A CN201510266807 A CN 201510266807A CN 104840275 B CN104840275 B CN 104840275B
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- artificial hip
- hip joint
- acetabular
- carbon
- titanium alloy
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Abstract
The invention discloses a kind of artificial hip joint, including：Acetabular outer cup, acetabular bone liner, femur bulb and joint femoral stem, acetabular bone liner coordinate between the inwall of acetabular outer cup and the outer surface of femur bulb, and joint femoral stem is fixed on femur bulb.The artificial hip joint wearability and lubricity of the present invention is good, can increase the service life.
Description
Technical field
The present invention relates to biomedical materials field, more particularly to a kind of artificial hip joint.
Background technology
Artificial hip joint replacing is current treatment osteoarticular field disease most efficient method, and it makes many serious Bones and joints
The patient of disease obtains rehabilitation.
Need constantly to explore in the clinical practice of artificial hip joint, the problem of also many, wherein, joint acetabular cup
It is two fatal problems of comparison with the loosening problem of joint femoral stem stability problem, and joint prosthesis.
The main abrasion between joint interface of the loosening problem of joint prosthesis causes the chips such as metal, ceramics, macromolecule to cause
Aseptic loosening so that the matching between ball and socket joint and mortar cup section is deteriorated, and then causes the failure of joint prosthesis, and chip is usual
The biological respinse in human body, such as inflammation or rejection can be caused, human body is damaged.In order to solve the pine of joint prosthesis
Dynamic problem, at present, is often surface-treated to joint prosthesis, for example, titanium pearl sintering, titanium silk sintering are carried out on joint prosthesis surface
Or spraying titanium alloy powder, biological ceramic powder, hydroxyapatite (HA) coating etc., although however, these surface treatments can delay
Loosening problem is solved, it is but poor with the amalgamation of body bone tissue, the problem of existence and stability.
In addition, the chip that articular surface long term wear is produced, caused bone resorption element causes osteocyte degeneration atrophy, causes hip
The disengaging of interfacial gap loosens between mortar outer cup and sclerotin, in this case it is still possible to cause acetabular outer cup to be implanted into ultimate failure, therefore, improves
While mortar cup, femoral stem are effectively combined reinforcement stability with human body bone, joint anti-wear performance is improved also most important.
The content of the invention
It is contemplated that at least solving one of above-mentioned technological deficiency there is provided a kind of artificial hip joint, extend artificial hip joint
Service life.
To achieve the above object, the technical scheme is that：
A kind of artificial hip joint, including：Acetabular outer cup, acetabular bone liner, femur bulb and joint femoral stem, acetabular bone liner are matched somebody with somebody
Close between the inwall of acetabular outer cup and the outer surface of femur bulb, joint femoral stem is fixed on femur bulb.
Optionally, it is formed with carbon-based lubricating film on the outer surface of the femur bulb and/or the inner surface of acetabular bone liner.
Optionally, the carbon-based lubricating film includes richness sp2On the lamination and lamination that a-C layers stack gradually with TiC layer
Rich sp3A-C layers.
Optionally, rich sp3A-C layers of thickness is 15-30nm, and the thickness of the carbon-based lubricating film is 2.0~5.0 μm.
Optionally, the rich sp2The content of carbon is 75~95wt% in a-C layers.
Optionally, the content of carbon is 45~75wt% in the lamination.
Optionally, acetabular bone liner is ultra-high molecular weight polyethylene or high crosslinked ultra-high-molecular-weight polyethylene, the acetabular bone
The material of outer cup, femur bulb and joint femoral stem is medical metal material.
Optionally, the metal outer cup and/or joint femoral stem are formed with the outer surface of the end of femur bulb
Titanium alloy layer, the titanium alloy layer is sponge pore structure.
Optionally, the thickness of the titanium alloy layer is 50-1000 μm.
Optionally, the titanium alloy layer is formed by 3D printing.
Optionally, the porosity of the titanium alloy layer is 70-85%.
Artificial hip joint provided in an embodiment of the present invention, using acetabular outer cup, acetabular bone liner, femur bulb structure, lead to
The matching that acetabular bone liner improves acetabular outer cup and femur bulb, increase wearability and lubricity are crossed, extension artificial hip joint
Service life.
Further, carbon-based lubricating film is formed with the outer surface of the femur bulb and/or the inner surface of acetabular bone liner,
Carbon-based lubricating film, which can be used, includes richness sp3A-C layers and richness sp2The a-C layers of structure of lamination that is stacked gradually with TiC layer so that
The interface of femur bulb has good self-lubricating property and high rigidity, the stability for improving the wearability of acetabular bone and using.
Further, the metal outer cup and/or joint femoral stem are formed on the outer surface of the end of femur bulb
There is titanium alloy layer, the titanium alloy layer is sponge pore structure, after artificial hip joint implantation human body, osteocyte can grow into sponge hole
In the duct of structure, increase and the amalgamation of body bone tissue effectively prevent from loosening between artificial hip joint and sclerotin.
Brief description of the drawings
The technical scheme implemented in order to illustrate more clearly of the present invention, below by the required accompanying drawing used in embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the configuration schematic diagram of the artificial hip joint according to the embodiment of the present invention；
Fig. 2 is the cross-sectional view of the carbon-based lubricating film according to the embodiment of the present invention；
Fig. 3 is the electromicroscopic photograph of the titanium alloy layer according to the embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
With reference to shown in Fig. 1, the artificial hip joint of the embodiment of the present invention includes acetabular outer cup 1, acetabular bone liner 2, femur bulb 3
With joint femoral stem 4, acetabular bone liner 2 coordinates between the inwall of acetabular outer cup 1 and the outer surface of femur bulb 3, joint femur
Handle 4 is fixed on femur bulb 3.
In the present invention, acetabular bone liner 2 coordinates between the inwall of acetabular outer cup 1 and the outer surface of femur bulb 3, is used as femur
The interface of bulb 3, femur bulb 3 is bonded in joint femoral stem 4, with acetabular bone liner 2 for interface carry out activity.Acetabular bone liner 2
The matching of acetabular outer cup and femur bulb, increase wearability and lubricity can be improved, extends the use longevity of artificial hip joint
Life.
Acetabular bone liner 2 can be using polyethylene, ceramics or metal material etc., and in the present embodiment, acetabular bone liner 2 can be super
High molecular weight polyethylene (UHMWPE) or high crosslinked ultra-high-molecular-weight polyethylene, the acetabular outer cup 1, femur bulb 3 and pass
The material for saving femoral stem 4 is medical metal material, and medical metal material is the metal or alloy for biomedical material, for example
Titanium alloy, stainless steel, vitallium, nickel cobalt (alloy) etc..
In an embodiment of the present invention, formed on the inner surface of the outer surface of the femur bulb 3 and acetabular bone liner 2
There is carbon-based lubricating film, the carbon-based lubricating film is usually to include the composite film of carbon material, the carbon-based lubricating film can pass through sputtering
Mode be plated on the inner surface of femur bulb and acetabular bone liner so that the interface of femur bulb has good lubricity.
In the present embodiment, as shown in Fig. 2 the carbon-based lubricating film 10 includes richness sp2A-C layers stack gradually with TiC layer
Lamination 101 and lamination on rich sp3A-C layers 102, can by way of sputtering plating, rich sp3A-C layers 102 are i.e. main
With sp3The amorphous carbon that the form of key is combined, rich sp2A-C layers i.e. main with sp2The amorphous carbon that the form of key is combined.
In a preferred embodiment, rich sp3The thickness of a-C layers 102 is 15-30nm, and the thickness of the carbon-based lubricating film is
2.0~5.0 μm, the rich sp2The content of carbon is 75~95wt% in a-C layers, in the lamination 102 content of carbon for 45~
75wt%.In the carbon-based lubricating film of the present embodiment, formed on the surface engaged with bulb and lining base for rich sp2a-C
The lamination 101 that layer is stacked gradually with TiC layer, is rich sp in top layer formation3A-C layers 102, the structure and material of the lamination cause
There is more preferable adhesion with substrate, while having the lubricity that low internal stress is become reconciled, and pass through rich sp3A-C layers are improved hard
Degree and anti-wear performance, greasy property.In addition, being coordinated using the acetabular bone liner of polyethylene with the femur bulb of carbon-based lubricating film is made
With, between interface have more preferable lubricity and wearability, it is to avoid the generation of wear debris, extend the use longevity of artificial hip joint
Life.
In order to further improve the amalgamation of artificial hip joint and body bone tissue, on the surface 11 of metal outer cup 1, with
, can be in the whole of metal outer cup 1 and joint femoral stem 4 is formed with titanium alloy layer on the outer surface 41 of the end of femur bulb
The titanium alloy layer is covered on individual surface.Joint femoral stem 4 is fixed with femur bulb 3, and joint femoral stem can be and femur bulb
The structure of one, or with the structure that femur bulb is split, can be formed in the whole surface of joint femoral stem 4 should
Titanium alloy layer, can also be formed with titanium alloy layer in joint femoral stem on the partial outer face of the end of femur bulb 3, ginseng
Examine shown in Fig. 3, joint femoral stem 4 is after the articulations digitorum manus femoral stem of end 41 of femur bulb is connected with femur bulb, joint stock
The side face that exposes of the bone handle close to femur bulb, it is preferred that the height h of the end 41 is the 1/3 of whole femoral stem height.
The structure sponge pore structure of the titanium alloy layer, sponge pore structure is the pore structure similar to sponge, as shown in figure 3,
The wall 20 of hole in sponge pore structure is titanium alloy material, and hole 22 is in rule or irregular shape, and hole is in thickness direction
Upper distribution straggly, in irregular solid netted distribution, forms the duct of connection, wherein, titanium alloy material is medical titanium alloy material
Material, it is adaptable to be implanted into human body, the porosity in titanium alloy layer is 75%, and the thickness of titanium alloy layer can be 50-1000 μm, can
To be formed on the surface of the substrate by 3D printing technique.
The titanium alloy layer is sponge pore structure, and with the pore space structure similar to bone tissue, surface is being formed with into the titanium
After the artificial hip joint implantation human body of alloy-layer, osteocyte can grow along the duct in sponge pore structure, and then cause artificial
Hip joint is chimeric with body bone tissue, increase and the amalgamation of body bone tissue, effectively prevents from sending out between artificial hip joint and sclerotin
It is raw to loosen.
The above described is only a preferred embodiment of the present invention, not making any formal limitation to the present invention.
Although the present invention is disclosed as above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with ability
The technical staff in domain, without departing from the scope of the technical proposal of the invention, all using in the methods and techniques of the disclosure above
Appearance makes many possible variations and modification to technical solution of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, the technical spirit according to the present invention is to made for any of the above embodiments any simple
Modification, equivalent variations and modification, in the range of still falling within technical solution of the present invention protection.
Claims (9)
1. a kind of artificial hip joint, it is characterised in that including：Acetabular outer cup, acetabular bone liner, femur bulb and joint femoral stem,
Acetabular bone liner coordinates between the inwall of acetabular outer cup and the outer surface of femur bulb, and joint femoral stem is fixed on femur bulb；
Carbon-based lubricating film is formed with the outer surface of the femur bulb and/or the inner surface of acetabular bone liner；
The carbon-based lubricating film includes richness sp2Rich sp on a-C layers of lamination and lamination that are stacked gradually with TiC layer3A-C layers.
2. artificial hip joint according to claim 1, it is characterised in that rich sp3A-C layers of thickness is 15-30nm, the carbon
The thickness of base lubricating film is 2.0~5.0 μm.
3. artificial hip joint according to claim 1, it is characterised in that the rich sp2In a-C layers the content of carbon be 75~
95wt%.
4. artificial hip joint according to claim 1, it is characterised in that in the lamination content of carbon be 45~
75wt%.
5. artificial hip joint according to claim 1, it is characterised in that acetabular bone liner be ultra-high molecular weight polyethylene or
High crosslinked ultra-high-molecular-weight polyethylene, the material of the acetabular outer cup, femur bulb and joint femoral stem is medical metal material.
6. the artificial hip joint according to any one of claim 1-5, it is characterised in that the acetabular outer cup and/or pass
Section femoral stem is formed with titanium alloy layer on the outer surface of the end of femur bulb, and the titanium alloy layer is sponge pore structure.
7. artificial hip joint according to claim 6, it is characterised in that the thickness of the titanium alloy layer is 50-1000 μm.
8. artificial hip joint according to claim 6, it is characterised in that the titanium alloy layer is formed by 3D printing.
9. artificial hip joint according to claim 6, it is characterised in that the porosity of the titanium alloy layer is 70-85%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266807.4A CN104840275B (en) | 2015-05-22 | 2015-05-22 | A kind of artificial hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266807.4A CN104840275B (en) | 2015-05-22 | 2015-05-22 | A kind of artificial hip joint |
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| Publication Number | Publication Date |
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| CN104840275A CN104840275A (en) | 2015-08-19 |
| CN104840275B true CN104840275B (en) | 2017-10-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112018009696A8 (en) * | 2015-11-19 | 2019-02-26 | Ceram Gmbh | annular ceramic insert for the stent graft |
| CN107157626A (en) * | 2017-07-18 | 2017-09-15 | 优适医疗科技（苏州）有限公司 | Distal femoral component prosthese |
| CN111134905B (en) * | 2019-12-30 | 2021-12-07 | 云南省第一人民医院 | Artificial hip joint and preparation method thereof |
| CN113456304A (en) * | 2021-05-20 | 2021-10-01 | 北京中安泰华科技有限公司 | 3D prints full hip joint system of double acting high abrasion |
| CN113456308B (en) * | 2021-07-12 | 2024-03-19 | 北京中安泰华科技有限公司 | Double-coating double-acting hip joint system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060184251A1 (en) * | 2005-01-07 | 2006-08-17 | Zongtao Zhang | Coated medical devices and methods of making and using |
| JP5100023B2 (en) * | 2006-03-29 | 2012-12-19 | 京セラメディカル株式会社 | Biomaterial, artificial joint using the same, and manufacturing method thereof |
| CN101224141A (en) * | 2007-12-21 | 2008-07-23 | 浙江大学 | Artificial hip joint with joint head and mortar cup surface coated by carbon/TiC nanometer multilayer compound film |
| CN201154007Y (en) * | 2008-01-22 | 2008-11-26 | 徐宁 | Hip-joint prosthesis with hydroxylapatite coating |
| CN101347358B (en) * | 2008-09-10 | 2012-04-25 | 哈尔滨工业大学 | Method for producing titanium alloy artificial hip joint with abrasion-proof ceramic coat |
| CN201404313Y (en) * | 2009-02-25 | 2010-02-17 | 裴可 | Anatomical biological fixation type artificial acetabulum prosthesis for adult acetabulum hypogenesis |
| CN101843533A (en) * | 2010-05-18 | 2010-09-29 | 徐英忱 | Artificial hip joint on bone trabecula microporous surface |
| US20130226307A1 (en) * | 2012-02-28 | 2013-08-29 | Amedica Corporation | Coated endoprostheses and related systems & methods |
| CN203598077U (en) * | 2013-10-11 | 2014-05-21 | 浙江一火科技有限公司 | Artificial acetabular cup |
| CN204798063U (en) * | 2015-05-22 | 2015-11-25 | 中奥汇成科技股份有限公司 | Artificial hip joint |
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- 2015-05-22 CN CN201510266807.4A patent/CN104840275B/en active Active
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