CN104352291A - Surface micro-texture artificial knee joint meniscus - Google Patents
Surface micro-texture artificial knee joint meniscus Download PDFInfo
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- CN104352291A CN104352291A CN201410614650.5A CN201410614650A CN104352291A CN 104352291 A CN104352291 A CN 104352291A CN 201410614650 A CN201410614650 A CN 201410614650A CN 104352291 A CN104352291 A CN 104352291A
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- meniscus
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Abstract
The invention relates to a surface micro-texture artificial knee joint meniscus. Micro-texture arrays are arranged on a carrying surface of the artificial knee joint meniscus, and the micro-texture arrays are distributed in a contact area between the artificial knee joint meniscus and artificial knee joint femoral condyle. By adopting the surface micro-texture artificial knee joint meniscu, the stress concentration phenomenon in partial area of the surface of the knee joint can be improved; the friction between the artificial knee joint meniscus and the artificial knee joint femoral condyle can be reduced, and the vibration and abnormal noise caused by the friction can also be reduced; the abrasive diffusion caused by the artificial knee joint friction pair can be reduced, and the service life of the artificial knee joint can be prolonged.
Description
Technical field
The present invention relates to a kind of surperficial micro-texture type artificial knee joint meniscus, belong to Medical Technology, Orthopeadic Surgery implant field.
Background technology
Along with the aging of human body and various joint disease or wound are on the impact of human synovial, cause the secondary local of joint motions or all damage, causing sufferer handicapped, even function of joint complete failure.For this problem, the main human body natural joint carrying out alternative defect by prosthetic joint implants in modern medicine, is clinically called artificial joint replacement.The pain of patient can not only be alleviated and eliminate by the displacement of artificial joint, and can also joint motions be rebuild, help sufferer to recover normal mobility, improve its quality of life.
Knee joint is the joint that organization of human body and function are the most complicated, its motion amplitude is large, carry stressed large, frequency of utilization is high, noneffective rate is high.Because knee joint existing rolling in motor process has slip again, therefore, prosthetic surface reaches lasting wear-resistant particularly difficulty.Present stage, the subject matter of artificial knee joint is the fretting wear produced between artificial knee-joint thighbone far-end and artificial knee joint meniscus.
Artificial knee joint meniscus is the important composition parts in artificial knee joint, its Main Function for substituting human body meniscus, with artificial tibial base is formed motion loading end, finally and lateral femoral condyle prosthesis form artificial knee joint.At present, the material that in artificial knee joint, artificial knee joint meniscus is conventional is ultra high molecular polyethylene, and prosthetic surface is shiny surface.In actual applications, the fretting wear on artificial knee joint surface directly has influence on the clinical performance of artificial knee joint.The High molecular weight polyethylene abrasive particle that wearing and tearing produce also can cause the generation of adhesive wear and abrasive wear.In addition, because artificial knee joint meniscus area supported is for a long time by the effect of alternation, cyclic loading, cause exfoliated, spot corrosion and the fatigue crack of the sub-surface of ultra high molecular polyethylene tibia liner, and produce with a large amount of polyethylene particles, form fatigue wear.High molecular weight polyethylene, to the ill effect of human body, except infringement soft tissue causes painful synovitis, also can encroach on surrounding bone tissue.Finally cause prosthetic loosening and cause joint replacement failure.
Summary of the invention
For the defect that prior art exists, the object of the present invention is to provide a kind of surperficial micro-texture type artificial knee joint meniscus, the rubbing action between artificial knee-joint thighbone condyle and artificial knee joint meniscus contact interface can be reduced, reduce the generation of wearing and tearing, vibration.
For achieving the above object, design of the present invention is:
Artificial knee joint meniscal surface makes micro-texture array, and such texture as the miniature memory container of joint fluid or tissue fluid, can provide lubricating fluid to artificial knee-joint thighbone condyle and artificial knee joint meniscus contact interface, prevents the generation of dry friction.In addition, when in, fast gait, increase the probability of happening of elastohydrodynamic lubrication between artificial knee-joint thighbone condyle and artificial knee joint meniscus contact interface.In the present invention, surperficial micro-texture type artificial knee joint meniscus can improve artificial knee joint surface of friction pair contact stress state, improves surperficial wettability, reduce meniscus and artificial knee-joint thighbone condyle is joined stress concentration phenomenon between pair, reduces three-body-abrasion, reduced the generation vibrated caused by rubbing.
For achieving the above object, the present invention adopts following technical scheme:
A kind of surperficial micro-texture type artificial knee joint meniscus, makes micro-texture array at the meniscal load-bearing surface of artificial knee joint, and described micro-texture array distribution is on the contact area of artificial knee joint meniscus and artificial knee-joint thighbone condyle.
Described micro-texture array along the contact area dense distribution of load-bearing surface, the spacing of unit texture be 1 × 10 micron to 1 × 10
3micron.
Described micro-texture array is being cylindrical perpendicular to shape on the cross section of load-bearing surface or the pit of circular arc rearranges by one group, radius and hole depth be 1 × 10 micron to 1 × 10
3micron.
Existing slippery inner surface artificial knee joint meniscus is designed to micro-texture surface by the present invention, and change artificial knee-joint thighbone condyle and artificial knee joint meniscus touch interface into Limited contact interface, improve subregion contact surface stress distribution.This micro-texture array can be used for storing joint fluid and tissue fluid, improves artificial knee joint meniscal surface wellability, helps protein film layer to generate.Micro-texture on artificial knee joint meniscus is mainly present in artificial knee-joint thighbone condyle prosthese and the meniscal primary contact regions of artificial knee joint in gait cycle, the generation of dry friction is caused when preventing artificial knee-joint thighbone condyle from contacting with artificial knee joint meniscus, and can wear particle be collected, reduce the diffusibility of abrasive particle to knee joint soft tissue and peri-prosthetic tissues, the generation of reduction bone dissolution phenomena.
Compared with prior art, the present invention has following outstanding substantive distinguishing features and significant advantage:
Comparatively Traditional Man meniscus of knee joint, the present invention can improve the stress concentration phenomenon of articular surface subregion, and reduces this regions wear rate; Artificial knee joint meniscus of the present invention has higher surface wettability, is conducive to the generation of elastohydrodynamic lubrication state, reduces direct contact of artificial knee-joint thighbone condyle and artificial knee joint meniscus friction pair; Artificial knee joint meniscus of the present invention can reduce the generation of vibration and the abnormal sound phenomenon produced because of friction between artificial knee joint loading end; Artificial knee joint meniscus of the present invention can reduce the abrasive particle diffusion that artificial knee joint friction pair produces, and reduces the generation of bone dissolution phenomena.
Accompanying drawing explanation
Fig. 1 is the meniscal population structure schematic diagram of artificial knee joint of the present invention.
Fig. 2 is artificial knee joint meniscus of the present invention micro-texture array schematic diagram.
Fig. 3 is the generalized section of the micro-texture of artificial knee joint meniscal surface of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, specific embodiments of the invention are described further.
As shown in Figure 1, a kind of surperficial micro-texture type artificial knee joint meniscus, make micro-texture array 2 at the meniscal load-bearing surface of artificial knee joint 1, described micro-texture array 2 is distributed on the contact area of artificial knee joint meniscus and artificial knee-joint thighbone condyle.
As shown in Figure 2, described micro-texture array 2 is totally rectangular array, along the contact area dense distribution of load-bearing surface 1, the spacing of unit texture be 1 × 10 micron to 1 × 10
3micron.
As shown in Figure 3, described micro-texture array 2 by one group on the cross section perpendicular to load-bearing surface 1 shape be cylindrical or the pit of circular arc 3 rearranges, radius and hole depth be 1 × 10 micron to 1 × 10
3micron.
The artificial meniscus of knee joint of the present invention, by biomaterials such as medical plastic, pottery, cobalt chrome molybdenums, adopts machining, laser fast shaping, physical chemistry surface etch process, makes surperficial micro-texture type artificial knee joint meniscus.
Claims (3)
1. surface micro-texture type artificial knee joint meniscus, it is characterized in that: make micro-texture array (2) at the meniscal load-bearing surface of artificial knee joint (1), described micro-texture array (2) is distributed on the contact area of artificial knee joint meniscus and artificial knee-joint thighbone condyle.
2. the micro-texture type artificial knee joint in surface according to claim 1 meniscus, is characterized in that: described micro-texture array (2) along the contact area dense distribution of load-bearing surface (1), the spacing of unit texture be 1 × 10 micron to 1 × 10
3micron.
3. the micro-texture type artificial knee joint in surface according to claim 1 meniscus, it is characterized in that: described micro-texture array (2) by one group on the cross section perpendicular to load-bearing surface (1) shape be cylindrical or the pit of circular arc (3) rearranges, radius and hole depth be 1 × 10 micron to 1 × 10
3micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614650.5A CN104352291A (en) | 2014-11-05 | 2014-11-05 | Surface micro-texture artificial knee joint meniscus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410614650.5A CN104352291A (en) | 2014-11-05 | 2014-11-05 | Surface micro-texture artificial knee joint meniscus |
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| CN104352291A true CN104352291A (en) | 2015-02-18 |
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|---|---|---|---|
| CN201410614650.5A Pending CN104352291A (en) | 2014-11-05 | 2014-11-05 | Surface micro-texture artificial knee joint meniscus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620477A (en) * | 2019-02-01 | 2019-04-16 | 北京爱康宜诚医疗器材有限公司 | Meniscus substitute and knee-joint prosthesis with it |
| CN109662812A (en) * | 2019-03-01 | 2019-04-23 | 安徽工程大学 | A kind of knee-joint prosthesis |
| CN110652382A (en) * | 2018-06-28 | 2020-01-07 | 苏州微创骨科医疗工具有限公司 | Joint prosthesis |
| CN112276367A (en) * | 2020-10-15 | 2021-01-29 | 江苏科技大学 | Porous titanium artificial bone microstructure and manufacturing method thereof |
| CN115813613A (en) * | 2023-02-17 | 2023-03-21 | 北京德益达美医疗科技有限公司 | Wear-resistant meniscus prosthesis with surface texture and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109662812A (en) * | 2019-03-01 | 2019-04-23 | 安徽工程大学 | A kind of knee-joint prosthesis |
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| CN112276367A (en) * | 2020-10-15 | 2021-01-29 | 江苏科技大学 | Porous titanium artificial bone microstructure and manufacturing method thereof |
| CN115813613A (en) * | 2023-02-17 | 2023-03-21 | 北京德益达美医疗科技有限公司 | Wear-resistant meniscus prosthesis with surface texture and preparation method thereof |
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Application publication date: 20150218 |