CN104874019A - Artificial joint femoral stem - Google Patents
Artificial joint femoral stem Download PDFInfo
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- CN104874019A CN104874019A CN201510266558.9A CN201510266558A CN104874019A CN 104874019 A CN104874019 A CN 104874019A CN 201510266558 A CN201510266558 A CN 201510266558A CN 104874019 A CN104874019 A CN 104874019A
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- femoral stem
- titanium alloy
- artificial hip
- hip joint
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Abstract
The invention discloses an artificial joint femoral stem which comprises a joint femoral stem body and at least one titanium alloy layer on the partial outer surface of the end part, close to a femoral ball head, of the joint femoral stem body, wherein the titanium alloy layer adopts a sponge hole structure; walls of holes in the sponge hole structure are made of titanium alloy materials; the holes are distributed in an irregular three-dimensional net-shaped manner in the thickness direction so as to form communicated hole channels. Integration of the artificial joint femoral stem and human body bone tissue is increased, so that looseness between the artificial joint femoral stem and the bone is effectively prevented.
Description
Technical field
The present invention relates to biomedical materials field, particularly relate to a kind of femoral stem component of artificial hip joint.
Background technology
Artificial hip joint replacing treats the most effective method of osteoarticular field disease at present, and it makes the patient of a lot of severe bone joint disease obtain rehabilitation.
In the clinical practice of artificial hip joint, also have many problems to need constantly to explore, wherein, joint acetabular cup and joint femoral stem stability problem, and the loosening problem of artificial joint are more fatal two problems.
The loosening problem of artificial joint causes the chips such as metal, pottery, macromolecule to cause aseptic loosening primarily of wearing and tearing between joint interface; matching between ball and socket joint and mortar cup interface is deteriorated; and then cause the inefficacy of artificial joint; chip can cause the biological respinse in human body usually; as inflammation or rejection etc., human body is damaged.In order to solve the loosening problem of artificial joint, at present, often surface treatment is carried out to artificial joint, titanium pearl sintering, titanium silk sintering or spraying titanium alloy powder, biological ceramic powder, hydroxyapatite (HA) coating etc. are such as carried out on artificial joint surface, but, although these surface treatments can alleviate loosening problem, poor with the amalgamation of body bone tissue, the problem of existence and stability.
Summary of the invention
The present invention is intended at least solve one of above-mentioned technological deficiency, provides a kind of femoral stem component of artificial hip joint, increases the amalgamation with body bone tissue, effectively prevents from occurring between femoral stem component of artificial hip joint and sclerotin to loosen.
For achieving the above object, technical scheme of the present invention is:
A kind of femoral stem component of artificial hip joint, comprise joint femoral stem body, and at least at the titanium alloy layer of joint femoral stem body on the partial outer face of the end of femur bulb, described titanium alloy layer is sponge pore structure, the wall of the hole in sponge pore structure is titanium alloy material, hole, in a thickness direction in irregular solid netted distribution, forms the duct be communicated with.
Optionally, the thickness of described titanium alloy layer is 50-1000um.
Optionally, the porosity of described titanium alloy layer is 70-85%.
Optionally, described titanium alloy layer is printed by 3D and is formed.
Optionally, the height forming the end of titanium alloy layer is 1/3 of whole joint femoral stem body height.
Optionally, the outer surface of described femur bulb is formed with carbon back lubricating film.
Optionally, described carbon back lubricating film comprises rich sp
2rich sp on the lamination that a-C layer and TiC layer stack gradually and lamination
3a-C layer.
Optionally, rich sp
3the thickness of a-C layer is 15-30nm, and the thickness of described carbon back lubricating film is 2.0 ~ 5.0 μm.
Optionally, described rich sp
2in a-C layer, the content of carbon is 75 ~ 95wt%.
Optionally, in described lamination, the content of carbon is 45 ~ 75wt%.
The femoral stem component of artificial hip joint that the embodiment of the present invention provides, the outer surface of joint femoral stem body is formed with titanium alloy layer, this titanium alloy layer is sponge pore structure, after this femoral stem component of artificial hip joint implant into body, osteocyte can be grown in the duct of sponge pore structure, increase the amalgamation with body bone tissue, effectively prevent from occurring between femoral stem component of artificial hip joint and sclerotin to loosen.
Accompanying drawing explanation
In order to be illustrated more clearly in technical scheme of the invention process, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the detonation configuration schematic diagram of the artificial hip joint according to the embodiment of the present invention;
Fig. 2 is the electromicroscopic photograph according to the titanium alloy layer on the outer surface of the joint femoral stem body of embodiment of the present invention femoral stem component of artificial hip joint;
Fig. 3 is the cross-sectional view according to the carbon back lubricating film on the outer surface of embodiment of the present invention femur bulb.
Detailed description of the invention
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Shown in figure 1, artificial hip joint mainly comprises acetabular outer cup 1, acetabular bone liner 2, femur bulb 3 and joint femoral stem 4, and acetabular bone liner 2 is engaged between the inwall of acetabular outer cup 1 and the outer surface of femur bulb 3, and joint femoral stem 4 is fixed on femur bulb 3.
Acetabular bone liner 2 is engaged between acetabular outer cup 1 inwall and femur bulb 3 outer surface, and as the interface of femur bulb 3, femur bulb 3 is bonded in joint femoral stem 4, with acetabular bone liner 2 for interface carries out activity.Acetabular bone liner 2 can improve the matching of acetabular outer cup and femur bulb, increases wearability and lubricity, extends the service life of artificial hip joint.
In the present invention, joint femoral stem body is comprised in joint femoral stem 4, and the titanium alloy layer on the outer surface of joint femoral stem body, joint femoral stem body can be the structure of the first body with femoral ball, also can for being the structure of split with femur bulb, this titanium alloy layer can be formed on the whole surface of joint femoral stem body, also titanium alloy layer can be formed with in joint femoral stem on the partial outer face of the end of femur bulb 3, shown in figure 1, joint femoral stem 4 is after the end 41 articulations digitorum manus femoral stem of femur bulb is connected with femur bulb, joint femoral stem is near the side face exposed of femur bulb, preferably, the height h of this end 41 is 1/3 of whole femoral stem height.Joint femoral stem body is the structure coordinated with femur bulb, and material can be medical metal material, and medical metal material is the metal or alloy for biomedical material, such as titanium alloy, rustless steel, vitallium, nickel cobalt (alloy) etc.
The structure of the titanium alloy layer on this joint femoral stem body outer surface is sponge pore structure, namely sponge pore structure is similar to the pore structure of sponge, as shown in Figure 2, the wall 20 of the hole in sponge pore structure is titanium alloy material, hole 22 is in rule or irregularly shaped, hole is distribution straggly in a thickness direction, in irregular solid netted distribution, form the duct be communicated with, wherein, titanium alloy material is medical titanium alloy material, be applicable in implant into body, porosity in titanium alloy layer is 75%, the thickness of titanium alloy layer can be 50-1000 μm, can be formed on the outer surface of femoral stem body by 3D printing technique.
Further, above-mentioned titanium alloy layer can also be formed on the outer surface 11 of acetabular outer cup 1 by 3D printing technique, this titanium alloy layer can be covered on the whole surface of acetabular outer cup 1, also can be partially formed this titanium alloy layer at acetabular outer cup 1, the local surfaces be especially combined with body bone tissue at this acetabular outer cup forms this titanium alloy layer.
This titanium alloy layer is sponge pore structure, there is the pore space structure being similar to osseous tissue, after artificial hip joint implant into body surface being formed with this titanium alloy layer, osteocyte can along the duct growth in sponge pore structure, and then make joint femoral stem chimeric with body bone tissue, increase the amalgamation with body bone tissue, effectively prevent from occurring between joint femoral stem and sclerotin to loosen.
Acetabular outer cup has mortar cup liner, acetabular bone liner 2 can adopt polyethylene, pottery or metal material etc., in the present embodiment, acetabular bone liner 2 can be ultra-high molecular weight polyethylene (UHMWPE) or high crosslinked ultra-high-molecular-weight polyethylene, the material of described acetabular outer cup 1 and femur bulb 3 can be medical metal material, medical metal material is the metal or alloy for biomedical material, such as titanium alloy, rustless steel, vitallium, nickel cobalt (alloy) etc.
In an embodiment of the present invention, at the outer surface of described femur bulb 3, and further, the inner surface of acetabular bone liner 2 is formed with carbon back lubricating film, this carbon back lubricating film is the composite film comprising material with carbon element, this carbon back lubricating film can be plated on the inner surface of femur bulb and acetabular bone liner by the mode of sputtering, makes the interface of femur bulb have good lubricity.
In the present embodiment, as shown in Figure 3, described carbon back lubricating film 10 comprises rich sp
2rich sp on the lamination 101 that a-C layer and TiC layer stack gradually and lamination
3a-C layer 102, can by the mode plating of sputtering, rich sp
3a-C layer 102 is that is main with sp
3the amorphous carbon of the form combination of key, rich sp
2a-C layer and main with sp
2the amorphous carbon of the form combination of key.
In a preferred embodiment, rich sp
3the thickness of a-C layer 102 is 15-30nm, and the thickness of described carbon back lubricating film is 2.0 ~ 5.0 μm, described rich sp
2in a-C layer, the content of carbon is 75 ~ 95wt%, and in described lamination 102, the content of carbon is 45 ~ 75wt%.In the carbon back lubricating film of the present embodiment, that the surface engaged with bulb and lining base is formed is rich sp
2the lamination 101 that a-C layer and TiC layer stack gradually, in top layer formation is rich sp
3a-C layer 102, the structure of this lamination and material make to have better adhesion with substrate, have the lubricity that low internal stress is become reconciled simultaneously, and by rich sp
3a-C layer improves hardness and anti-wear performance, greasy property.In addition, adopt the femur bulb of poly acetabular bone liner and carbon back lubricating film with the use of, there is between interface better lubricity and wearability, avoid the generation of wear debris, extend the service life of artificial hip joint.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention.
Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (10)
1. a femoral stem component of artificial hip joint, it is characterized in that, comprise joint femoral stem body, and at least at the titanium alloy layer of joint femoral stem body on the partial outer face of the end of femur bulb, described titanium alloy layer is sponge pore structure, the wall of the hole in sponge pore structure is titanium alloy material, and hole, in a thickness direction in irregular solid netted distribution, forms the duct be communicated with.
2. femoral stem component of artificial hip joint according to claim 1, is characterized in that, the thickness of described titanium alloy layer is 50-1000um.
3. femoral stem component of artificial hip joint according to claim 1, is characterized in that, the porosity of described titanium alloy layer is 70-85%.
4. femoral stem component of artificial hip joint according to claim 1, is characterized in that, described titanium alloy layer is printed by 3D and formed.
5. femoral stem component of artificial hip joint according to claim 1, is characterized in that, the height forming the end of titanium alloy layer is 1/3 of whole joint femoral stem body height.
6. femoral stem component of artificial hip joint according to claim 1, is characterized in that, the outer surface of described femur bulb is formed with carbon back lubricating film.
7. femoral stem component of artificial hip joint according to claim 6, is characterized in that, described carbon back lubricating film comprises rich sp
2rich sp on the lamination that a-C layer and TiC layer stack gradually and lamination
3a-C layer.
8. femoral stem component of artificial hip joint according to claim 7, is characterized in that, rich sp
3the thickness of a-C layer is 15-30nm, and the thickness of described carbon back lubricating film is 2.0 ~ 5.0 μm.
9. femoral stem component of artificial hip joint according to claim 7, is characterized in that, described rich sp
2in a-C layer, the content of carbon is 75 ~ 95wt%.
10. femoral stem component of artificial hip joint according to claim 7, is characterized in that, in described lamination, the content of carbon is 45 ~ 75wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266558.9A CN104874019A (en) | 2015-05-22 | 2015-05-22 | Artificial joint femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266558.9A CN104874019A (en) | 2015-05-22 | 2015-05-22 | Artificial joint femoral stem |
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| CN104874019A true CN104874019A (en) | 2015-09-02 |
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|---|---|---|---|
| CN201510266558.9A Pending CN104874019A (en) | 2015-05-22 | 2015-05-22 | Artificial joint femoral stem |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388976A (en) * | 2016-04-11 | 2017-02-15 | 四川大学华西医院 | 3D-printed imitated bone trabecula porous bearing reinforced metal prosthesis |
| CN106388975A (en) * | 2016-04-11 | 2017-02-15 | 四川大学华西医院 | 3D-printed imitated bone trabecula porous bearing metal prosthesis |
| WO2019113886A1 (en) * | 2017-12-14 | 2019-06-20 | 中奥汇成科技股份有限公司 | Novel bionic titanium artificial joint prosthesis |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001006960A1 (en) * | 1999-07-27 | 2001-02-01 | Tecnomeccanica S.R.L. | Anti-dislocation bilateral hip prosthesis |
| US20060184251A1 (en) * | 2005-01-07 | 2006-08-17 | Zongtao Zhang | Coated medical devices and methods of making and using |
| 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 |
| CN101843533A (en) * | 2010-05-18 | 2010-09-29 | 徐英忱 | Artificial hip joint on bone trabecula microporous surface |
-
2015
- 2015-05-22 CN CN201510266558.9A patent/CN104874019A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001006960A1 (en) * | 1999-07-27 | 2001-02-01 | Tecnomeccanica S.R.L. | Anti-dislocation bilateral hip prosthesis |
| US20060184251A1 (en) * | 2005-01-07 | 2006-08-17 | Zongtao Zhang | Coated medical devices and methods of making and using |
| 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 |
| CN101843533A (en) * | 2010-05-18 | 2010-09-29 | 徐英忱 | Artificial hip joint on bone trabecula microporous surface |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106388976A (en) * | 2016-04-11 | 2017-02-15 | 四川大学华西医院 | 3D-printed imitated bone trabecula porous bearing reinforced metal prosthesis |
| CN106388975A (en) * | 2016-04-11 | 2017-02-15 | 四川大学华西医院 | 3D-printed imitated bone trabecula porous bearing metal prosthesis |
| CN106388976B (en) * | 2016-04-11 | 2018-06-29 | 四川大学华西医院 | The porous load-bearing enhancing metal prostheses of bone trabecula are imitated in 3D printing |
| WO2019113886A1 (en) * | 2017-12-14 | 2019-06-20 | 中奥汇成科技股份有限公司 | Novel bionic titanium artificial joint prosthesis |
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Application publication date: 20150902 |
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