CN105055050B - The method that patterned surface prepares low friction high rigidity artificial hip joint bulb - Google Patents
The method that patterned surface prepares low friction high rigidity artificial hip joint bulb Download PDFInfo
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- CN105055050B CN105055050B CN201510473611.2A CN201510473611A CN105055050B CN 105055050 B CN105055050 B CN 105055050B CN 201510473611 A CN201510473611 A CN 201510473611A CN 105055050 B CN105055050 B CN 105055050B
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- hip joint
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Abstract
The present invention relates to a kind of method that patterned surface prepares low friction high rigidity artificial hip joint bulb, it is made up of vitallium material, feature is that patterning dimple array is formed on artificial hip joint bulb surface, patterning dimple array is prepared in artificial hip joint bulb friction surface with laser interference lithography, form the small-sized buffer of joint fluid or tissue fluid, reduce the real contact area between friction pair simultaneously, accommodate caused abrasive particle in friction process, reach the purpose of antifriction.The TRANSIENT HIGH TEMPERATURE of laser, make crystal grain refinement, material hardness enhancing, obtain low friction, high rigidity performance artificial hip joint.Artificial hip joint bulb of the invention has good greasy property, can reduce the rubbing action between artificial hip joint friction pair interface, reduce friction.Hardness enhancing simultaneously, reduces abrasion, optimizes friction, the polishing machine of existing artificial hip joint bulb.
Description
Technical field
The present invention relates to a kind of method that patterned surface prepares low friction high rigidity artificial hip joint bulb, belong to existing
There is the improvement of artificial hip joint performance.
Background technology
Artificial joint replacement is to treat whole end stage joint illness most efficient method at present, can be obviously improved patient's
Motor function and raising life quality.Because population continues aging and the notable extension of human longevity, there is an urgent need to develop
The joint prosthesis of long-life.Therefore, need at present the key issue solved be exactly can be the hundreds of millions of osteoarthropathy in the whole world
Patient provides super quality and competitive price, long life, the joint prosthesis of bio-compatible.
Joint prosthesis technology is related to the multi-disciplinary intersection such as materialogy, bio-tribology and engineering in medicine, is related to people
Quality of life.The friction and wear behavior of joint prosthesis is a key factor for evaluating its quality.How people is improved
The performance at work joint-friction interface, and then the service life for significantly improving joint prosthesis has become a crowd world of interest
Problem.Domestic and international material and medical science and technology worker have carried out numerous studies to improving artificial joint material antiwear and friction reduction property,
Focus primarily upon at present and surface modification treatment is carried out to traditional joint material, to improve material surface state and physics, chemistry
Performance, so as to improve the anti-wear performance of artificial joint material, reduce coefficient of friction.
The Main Means for reaching improvement artificial joint material tribological property are modified by surface face coat method, surface
Graft modification, plasma treatment, patterned surface etc..Found by the retrieval to prior art, Chinese invention patent number
200810137090.3 day for announcing 2009-01-21, Chinese invention patent number describes the titanium alloy people with abrasion-proof ceramic coat
Work hip joint and its manufacture method, Chinese invention patent, 201210086231.X, publication date 2012-08-08, describe artificial
Hip joint surface of friction pair film layer and preparation method thereof, the key of coating quality are interface bond strength between coating and matrix
Size, this is most important in coating and more scabrous problem.Meanwhile the difference of the thermal coefficient of expansion of coating and matrix can be led
Cause internal stress in material be present, and then influence the abrasion-resistance of joint prosthesis.
Patterned surface is micro- on micro/nano level micro-capsule patterning of the material surface structure with regular shape, surface
Capsule has the function that to store lubricating fluid, matches somebody with somebody the lubricating status of secondary surface so as to improve to rub, realize the raising of tribological property.In
State patent of invention 201010103613.X, day for announcing 2010-07-14, describe joint prosthesis ultra-high molecular weight polyethylene material
Expect surface superfine texture processing method, improve its tribological property as artificial joint material.
The advantage of mating surface patterning, laser interference manufacture have other technologies can not in terms of patterned surface modification
The potentiality and advantage of replacement.The technology is straight using pattern (the spatially Energy distribution of multicycle) caused by multi-beam laser interference
Connect processing or modification material surface (curved surface or plane) forms high-precision nanoscale, micron order and the micro-nano corresponding with pattern and mixed
The periodic structure of conjunction, obtain the material surface with specific physical and chemical characteristic.
Therefore, the present invention by laser interference manufacturing technology and patterning techniques R. concomitans in the table of artificial hip joint bulb
In terms of the modification of face, overcome the deficiencies in the prior art, there is provided a kind of patterned surface prepares low friction high rigidity artificial hip joint
Method, belong to the improvement to existing artificial hip joint performance, improve the hardness and tribological property of artificial hip joint.
The content of the invention
The technology of the present invention solves problem：Overcome the deficiencies in the prior art, there is provided one kind is real using laser interference photolithography technology
The method that existing patterned surface prepares low friction high rigidity artificial hip joint bulb, this method have excellent controllability, good
Stability and durability, and with exposure field area is big, efficiency high, be adapted to overcast to produce in enormous quantities the advantages of.Belong to pair
The improvement of existing artificial hip joint performance, improve the hardness and tribological property of artificial hip joint.
The purpose of the present invention can be realized by following technical measures：A kind of patterned surface prepares low friction high rigidity people
The method of work hip joint bulb, it is made up of vitallium material, it is characterised in that：Formed and schemed on artificial hip joint bulb surface
Case dimple array, i.e., patterning dimple array is prepared with laser interference lithography in artificial hip joint bulb friction surface, including
Following steps：
A. hip joint bulb is cleaned by ultrasonic；
B. three beam laser optical interference circuit systems are established, etch sample；
C. change Three-beam Interfere parameter, obtain structural cycle from nanoscale to micrometer-adjustable, the depth controllable cycle
Property lattice structure；
D. optimize the parameters such as interference light intensity and the time for exposure of Three-beam Interfere system, obtain low friction high rigidity performance people
Work hip joint bulb.
The patterning dimple array is made up of the periodically miniature dimple oldered array of large area, the dimple array week of preparation
Phase is 1-10 μm, and dimple depth is 0.3-6 μm.
The three beam lasers interference system is made up of laser, beam splitting, refractive power and orthopedic systems, and one is sent by laser
Shu Jiguang, it is divided into three beams coherent beam through divided beam system, divided beam system is by high reflective mirror, spectroscope, half-wave plate and polarizer group
Into making three beams coherent light space symmetr through dioptric system, orthopedic systems carry out beam shaping before three light beams converge at sample, made
They are irradiated on sample simultaneously with certain incidence angle, change three beams spatial light interferometric parameter, and parameter includes wavelength, space
Angle, incidence angle, phase angle, polarization state, interference light intensity and time for exposure etc., make three beam laser interference system interference figures
Characteristic size is interfered on artificial hip joint bulb surface from nanoscale to micrometer-adjustable and obtains different cycles, density, feature
The dimple lattice structure of size and different depth.
Carry out beam shaping respectively to three-beam before three light beams converge at sample, orthopedic systems placed angle is according to light beam
Incident angle depending on, make spot energy distribution more uniform, be shaped to uniform beam.
Laser output wavelength used is 1064nm, and Gauss beam reshaping time for exposure 10-70s, swashs into uniform beam
Optical energy density is 0.15-0.26Jcm-2。
Cycle, dimple depth and the pattern of adjustment artificial hip joint bulb surface dimple array, obtain low friction, high rigidity
The surface of performance, obtain coefficient of friction and reduce 64%, the optimization artificial hip joint of hardness enhancing 40%.
The present invention has the advantage that compared with existing method and system：
(1) existing joint modification technology is mostly to realize hardness or the one-side optimization of tribology.Using laser interference
Patterning dimple lattice structure prepared by method, optimizes the tribological property between joint-friction interface, while laser is instantaneous
High temperature, during ablator, make crystal grain refinement, material hardness is improved simultaneously.
(2) present invention per beam of coherent light in light path due to all employ optical polarization device, to the polarization of every light beam
State and luminous intensity are regulated and controled respectively, to improve the contrast of conoscope image, make the shape of conoscope image and quality more accurate
The advantages that controllable.
(3) because laser interferometry can produce nanoscale to the structure plan of micrometer-adjustable, there is graphic feature
The advantages of size is small, pattern density adjustability is good.
(4) due to laser interferometry make pattern caused by the present invention without mask, exposure field area is big, efficiency
It is high, manufacture craft is relatively easy, have quick, large area, efficiently, be realized with a low cost artificial hip joint bulb patterning and reach and subtract
The advantages of friction, high rigidity performance.
(5) micro-nano structure caused by laser interferometry makes the present invention can pass through Mechanical Moving wafer workpiece
The method of platform or interference opticses realizes the preparation of large area periodic structure, has and makes large area periodicity dimple battle array
The advantages of row.
(6) due to dimple array, the small-sized buffer of joint fluid or tissue fluid can be formed, while is reduced between friction pair
Real contact area, accommodate caused abrasive particle in friction process, reach the purpose of antifriction.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is artificial hip joint Sphere Model figure prepared by the present invention；
Fig. 3 is the system schematic that the present invention realizes artificial hip joint bulb dimple array using Three-beam Interfere；
Fig. 4 is the system light path figure that the present invention realizes artificial hip joint bulb dimple array using Three-beam Interfere；
Fig. 5 and Fig. 6 is dimple array structure pattern caused by Three-beam Interfere.
Embodiment
Shown in Fig. 1, the present invention is embodied as：
Patterning dimple array is formed on artificial hip joint bulb surface, i.e., uses and swashs in artificial hip joint bulb friction surface
Light interference lithography prepares patterning dimple array, comprises the following steps：
A. hip joint bulb is cleaned by ultrasonic；
B. three beam laser optical interference circuit systems are established, etch sample；
C. change Three-beam Interfere parameter, obtain structural cycle from nanoscale to micrometer-adjustable, the depth controllable cycle
Property lattice structure；
D. optimize the interference light intensity and exposure time parameter of Three-beam Interfere system, obtain low friction, high rigidity performance people
Work hip joint bulb.
As shown in Fig. 2 the artificial hip joint Sphere Model figure prepared for the present invention；Artificial hip joint bulb sample is carried out
It is cleaned by ultrasonic, is cleaned by ultrasonic 5min in acetone soln, absolute ethyl alcohol, deionized water solution successively, washes away surface contaminant.Take
Build optical interference circuit as shown in Figure 3 to be interfered, prepare dimple lattice structure on artificial hip joint bulb surface, prepare design sketch
As shown in Fig. 2 wherein dimple array period is 1-10 μm, dimple depth is 0.3-6 μm.
As shown in figure 3, the system signal of artificial hip joint bulb dimple array is realized using Three-beam Interfere for the present invention
Figure.The laser interference system of use forms beam splitting system by 6 high reflective mirrors (M1-M6) and two spectroscopes (B1-B2).By laser
Device (Laser) sends beam of laser, is turned back light path by speculum M4, then be divided into three beams coherent beam, beam splitting system by divided beam system
System is into making three beams coherent light space symmetr, shaping system through dioptric system by high reflective mirror, spectroscope, half-wave plate and polarizer group
System carries out beam shaping before three light beams converge at sample, makes them with certain incidence angle while is irradiated on sample, is formed
Dimple lattice structure is patterned, as shown in Figure 5,6.
By changing three beams spatial light interferometric parameter, parameter includes wavelength, Space Angle, incidence angle, phase angle, polarization shape
State, interference light intensity and time for exposure etc., make the characteristic size of three beam laser interference system interference figures from nanoscale to micron
Level is adjustable, interferes obtaining the dimple point of different cycles, density, characteristic size and different depth on artificial hip joint bulb surface
Battle array structure.
Carry out beam shaping respectively to three-beam before three light beams converge at sample, orthopedic systems placed angle is according to light beam
Incident angle depending on, make spot energy distribution more uniform, be shaped to uniform beam.
As shown in figure 4, sending the laser of 1064nm wavelength by laser, it is divided into three beams through beam splitting, refractive power and orthopedic systems
Coherent light, converges at artificial hip joint bulb surface, and incident light Space Angle is distributed into system centre axial symmetry, i.e., 0 °, 120 °,
240 °, with 5 ° of incident angles, light intensity and the polarization direction of each light beam are accurately controlled by wave plate and polarizer, polarization direction is
TE-TE-TM, periodicity optical field distribution structure is formed, direct etching artificial hip joint bulb surface forms corresponding dimple battle array
Array structure.
Claims (1)
1. a kind of method that patterned surface prepares low friction high rigidity artificial hip joint bulb, by vitallium material system
Into, it is characterised in that：Patterning dimple array is formed on artificial hip joint bulb surface, i.e., in artificial hip joint bulb friction table
Face prepares patterning dimple array with laser interference lithography, comprises the following steps：
A. hip joint bulb is cleaned by ultrasonic；
B. three beam laser optical interference circuit systems are established, etch sample；
C. change Three-beam Interfere parameter, obtain structural cycle from nanoscale to micrometer-adjustable, the controllable periodic points of depth
Battle array structure；
D. optimize the parameters such as interference light intensity and the time for exposure of Three-beam Interfere system, obtain low friction high rigidity performance artificial
Joint ball head；
E. the patterning dimple array is made up of the periodically miniature dimple oldered array of large area, the dimple array period of preparation
For 1-10 μm, dimple depth is 0.3-6 μm；
F. cycle, dimple depth and the pattern of artificial hip joint bulb surface dimple array are adjusted, obtains low friction high rigidity
The surface of energy, obtain coefficient of friction and reduce 64%, the optimization artificial hip joint of hardness enhancing 40%；
The three beam lasers interference system is swashed by laser, beam splitting, refractive power and orthopedic systems composition by what laser was sent
Light, it is divided into three beams coherent light through beam splitting, refractive power and orthopedic systems, converges at artificial hip joint bulb surface, incident light Space Angle
It is distributed into system centre axial symmetry, i.e., 0 °, 120 °, 240 °, with 5 ° of incident angles, by wave plate and polarizer, accurately control is each
The light intensity of light beam and polarization direction, polarization direction TE-TE-TM, form periodicity optical field distribution structure, direct etching artificial
Joint ball head surface forms corresponding dimple array structure；Optical polarization device is all employ per beam of coherent light in light path,
Polarization state and luminous intensity to every light beam regulate and control respectively, to improve the contrast of conoscope image, make conoscope image
Shape and quality more controllable precise；
Beam shaping is carried out before three light beams converge at sample, depending on orthopedic systems placed angle is according to the incident angle of light beam,
Make spot energy distribution more uniform, be shaped to uniform beam；
Laser output wavelength used is 1064nm, and Gauss beam reshaping is into uniform beam, time for exposure 10-70s, laser energy
Metric density is 0.15-0.26Jcm-2。
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| US10737462B2 (en) * | 2016-08-24 | 2020-08-11 | Hyundai Motor Company | Method for coating surface of moving part of vehicle and moving part of vehicle manufactured by the same |
| CN106842822A (en) * | 2017-01-18 | 2017-06-13 | 长春理工大学 | The laser interference nanometer lithography system of one step texturing modified titanium alloy implant surface |
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| US7578851B2 (en) * | 2005-12-23 | 2009-08-25 | Howmedica Osteonics Corp. | Gradient porous implant |
| CN101254138B (en) * | 2008-03-28 | 2010-06-02 | 西北有色金属研究院 | Micropore processing method of bone repairing body rough surface |
| CN101916042A (en) * | 2010-07-23 | 2010-12-15 | 长春理工大学 | Multi-beam semiconductor laser interference nanoimprinting technology and system |
| US8728563B2 (en) * | 2011-05-03 | 2014-05-20 | Palmaz Scientific, Inc. | Endoluminal implantable surfaces, stents, and grafts and method of making same |
| CN102259826A (en) * | 2011-06-22 | 2011-11-30 | 上海电机学院 | Method and device for preparing micro nano composite periodic structure by using femtosecond laser beams |
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