CN201668542U - Tantalum Coated Artificial Knee Prosthesis - Google Patents
Tantalum Coated Artificial Knee Prosthesis Download PDFInfo
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- CN201668542U CN201668542U CN201020187747XU CN201020187747U CN201668542U CN 201668542 U CN201668542 U CN 201668542U CN 201020187747X U CN201020187747X U CN 201020187747XU CN 201020187747 U CN201020187747 U CN 201020187747U CN 201668542 U CN201668542 U CN 201668542U
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Abstract
本实用新型涉及到人工膝关节假体，特别涉及到一种表面设置有钽微孔涂层的人工膝关节假体，它包括股骨髁组件、胫骨垫组件、胫骨托组件及髌骨组件，股骨髁组件安装于股骨远端，胫骨托组件与胫骨垫组件嵌合后安置于胫骨平台，髌骨组件与经过截骨处理的人体髌骨相嵌合；股骨髁组件、胫骨托组件、胫骨垫组件与髌骨组件复位后，将周围的韧带积及肌腱组织复位、缝合固定，其特征是：股骨髁组件、胫骨托组件是钛合金或钴铬钼合金材料，髌骨组件系是高分子聚乙烯材料，股骨髁组件的上面或称内面、胫骨托组件的底面表层是微孔化的钽涂层。它克服目前人工假体涂层的不足，提高人工假体在人体内的固定效果，延长人工假体的使用寿命。
The utility model relates to an artificial knee joint prosthesis, in particular to an artificial knee joint prosthesis with a tantalum microporous coating on the surface, which includes a femoral condyle component, a tibial pad component, a tibial support component, a patella component, a femoral condyle The assembly is installed on the distal end of the femur. The tibial tray assembly and the tibial pad assembly are fitted and placed on the tibial plateau. The patellar assembly fits with the osteotomized human patella; the femoral condyle assembly, the tibial tray assembly, the tibial pad assembly and the patella assembly After reduction, the surrounding ligaments and tendon tissues are reset, sutured and fixed. It is characterized in that: the femoral condyle component and the tibial tray component are made of titanium alloy or cobalt-chromium-molybdenum alloy material, the patella component is made of high molecular polyethylene material, and the femoral condyle component is The superior or medial, bottom surface of the tibial tray component is a microporous tantalum coating. It overcomes the deficiency of the artificial prosthesis coating at present, improves the fixing effect of the artificial prosthesis in the human body, and prolongs the service life of the artificial prosthesis.
Description
Technical field
This utility model relates to artificial knee joint prosthesis, specially refers to the tantalum coating artificial knee joint prosthesis that a kind of surface is provided with the tantalum micro porous coating, belongs to the bio-medical composition application.
Background technology
At present, bio-ceramic coating material and micropore metal coating biology material are the main directions that prosthetic surface is handled, and are representative with hydroxyapatite (HA) and titanium (Ti) coating respectively.They are that technology by sintering or plasma spraying is with HA(Ca
10(PO
4)
6(OH)
2) and the Ti coating metal at rustless steel or Ti metal base surface, formation has the biological coating composite of certain bone conduction, inducing function, overcome body implanting material in the past in the deficiency that exists aspect mechanical strength, biocompatibility, the combination property such as corrosion-resistant, become more satisfactory in recent years bone reconstruction biomaterials.Chinese patent description CN 201171731Y discloses a kind of artificial knee joint prosthesis, at femoral prosthesis and tibial prosthesis surface the coating formation is set, and coating is that hydroxylapatite constitutes.But existing bibliographical information because HA belongs to the material of human body degradable and absorption, can make between material matrix and tissue after its coating degraded and produce the gap, causes prosthetic loosening gradually.For Ti coating composite biological material, though be better than HA coating biology material aspect the stability late period at surperficial mechanical strength, corrosion-resistant and prosthese, but implant in early days at prosthese, also there are certain gap in Ti coating and HA coating material aspect bone conduction and the bone inducing function.
The middle of last century, tantalum (Ta) metallic biomaterial begins to enter field of medical applications.At first, the biocompatibility of tantalum metallic biomaterial and provide theoretical foundation as coating material in orthopedic applications for the tantalum metal in the characteristic that is better than titanium and other metallic biomaterials aspect chemical stability, the corrosion resistance, secondly, the tantalum metal has been broken away from many holes Tantalum outer lining assembly in the restriction that is subjected to the mechanics requirement of prosthese own aspect thickness, the volume as the prosthese coating, has feasibility.
Summary of the invention
The purpose of this utility model provides a kind of tantalum coating artificial knee joint prosthesis, and it overcomes the deficiency of present artificial prosthesis coating, improves artificial prosthesis at the intravital fixed effect of people, prolongs the service life of artificial prosthesis.
The technical solution adopted in the utility model is: tantalum coating artificial knee joint prosthesis, comprise condyle of femur assembly, tibia pad assembly, tibia holder assembly and patella assembly, the condyle of femur assembly is installed on distal femur, be placed in tibial plateau after tibia holder assembly and tibia pad assembly are chimeric, patella assembly and the Human Patella tabling of handling through osteotomy; After condyle of femur assembly, tibia pad assembly, tibia holder assembly and patella assembly reset, ligament around inciting somebody to action again is long-pending and tendon tissue resets, sutured, it is characterized in that: condyle of femur assembly, tibia holder assembly are titanium alloy T i-6Al-4V or vitallium Co30Cr6Mo0.35C material, the patella assembly is the high-molecular polythene material, and the top or title inner face of condyle of femur assembly, the top layer, bottom surface of tibia holder assembly are micropore tantalum coatings.
Described micropore tantalum coating layer thickness is the 30-800 micron, and porosity is 20%-50%.
Described micropore tantalum coating layer thickness value is 150 microns, and porosity is 35%.
Described condyle of femur assembly side is to have certain thickness, downward " C " arcuate structure in arc top, the bottom surface is slick full arc shape structure, be that several planes cross in twos and form different dihedral angle structures above, the arc of general outline shape and bottom articular surface is consistent; The Facad structure of bottom surface is similar to the condyle of femur articular surface, and both sides are the colyliform projection downwards, depression or disappearance on the mediad.
Described tibia pad assembly and tibia holder assembly are that certain thickness polythene material is arranged, and are articular surface above the tibia pad assembly, and central authorities are projection slightly, and both sides are the plate-like depression, are complementary with the both sides colyliform projection of condyle of femur assembly below; The bottom surface of tibia holder assembly is the central planar structure that has hollow-cone shape or columnar projections, and plane, tibia holder assembly bottom surface, projection closely contact with the osseous tissue of the treated side of proximal tibia.
The beneficial effects of the utility model are: have the compatibility is good, corrosion-resistant, wear-resistant, bond strength is high metal tantalum material as coating material because this utility model has adopted, coating is utilized plasma spraying technology simultaneously, having sprayed a layer thickness for the distal femoral component of prosthese and tibial component outer surface is the 30-800 micron, and porosity is the tantalum micro porous coating of 20%-50%; The tantalum micro porous coating is between prosthese and skeleton; be that one of prosthetic surface creation has the micropore environment when prosthetic surface being played the effect of strengthening and protecting; the roughness and the porosity of prosthetic surface have been increased; make prosthetic surface form the synosteosis face that existing matsurface has tiny hole again; increased the grappling area of skeleton and prosthese; also created prerequisite for the long people in hole of freshman bone tissue; set up a kind of synostosis between prosthese after feasible implantation the and skeleton and reach biological fixation; avoid the loosening of prosthese and come off; increase bone amount of growing into and prosthesis stability after prosthese is implanted, thereby further guaranteed the fixed effect and the service life of prosthese.It is mainly used in pathological changes such as pain that treatment causes because of knee joint wound, inflammation, tumor, degeneration, stiff, the dyskinesia, improves patient's life quality.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing, but not as to qualification of the present utility model:
Fig. 1 is the condyle of femur modular construction sketch map of this utility model tantalum coating artificial knee joint prosthesis;
Fig. 2 is the structural representation of the tibia pad of this utility model tantalum coating artificial knee joint prosthesis;
Fig. 3 is the structural representation of the tibia holder of this utility model tantalum coating artificial knee joint prosthesis;
Fig. 4 is the coating position sketch map of this utility model tantalum coating artificial knee joint condyle of femur assembly;
Fig. 5 is the coating position sketch map of this utility model tantalum coating artificial knee joint tibia holder assembly.
Among the figure: 1, condyle of femur assembly; 2, tibia pad assembly; 3, tibia holder assembly; 4, band coating condyle of femur assembly; 5, band coating tibia holder assembly; 6, coating position.
The specific embodiment
The structure that is not described in detail in an embodiment, its structure is identical with existing known structure.
As Figure 1-3, tantalum coating artificial knee joint prosthesis is made of condyle of femur assembly 1, tibia pad assembly 2, tibia holder assembly 3 and patella assembly (not shown), more than each combination of components use together, condyle of femur assembly 1 is installed on distal femur, be placed in tibial plateau after tibia pad assembly 2 and tibia holder assembly 3 are chimeric, the patella assembly with through the Human Patella of osteotomy processing mutually down close; After condyle of femur assembly 1, tibia holder assembly 3, tibia pad assembly 2 resets with the patella assembly, with around ligament long-pending and tendon tissue resets, sutured.Condyle of femur assembly 1, tibia holder assembly 3 are titanium alloy (Ti-6Al-4V) or vitallium (Co30Cr6Mo0.35C) material, and patella assembly system is the high-molecular polythene material.Use hard Al
2O
3Or SiC sand is as medium, and sandblasting pretreatment is carried out in top (or claiming inner face) of condyle of femur assembly 1, the bottom surface of tibia holder assembly 3, forms matsurface in prosthetic surface, is beneficial to the combination of coating.
Shown in Fig. 4,5, this utility model has adopted has the compatibility is good, corrosion-resistant, wear-resistant, bond strength is high metal tantalum material as coating material, coating is utilized plasma spraying technology simultaneously, having sprayed a layer thickness for the bottom surface of the condyle of femur assembly 1 of prosthese top (or claiming inner face), tibia holder assembly 3 is the 30-800 micron, porosity is the tantalum micro porous coating of 20%-50%, and the preferred value of tantalum micro porous coating is that thickness is that 150 microns porositys are 35%; The position of spraying is band coating condyle of femur assembly 4(Fig. 4) and band coating tibia holder assembly 5(Fig. 5) the position at coating position 6.
Condyle of femur assembly 1 side is to have certain thickness, downward " C " arcuate structure in arc top, the bottom surface is slick full arc shape structure, above (being inner face) be that several planes cross in twos and form different dihedral angle structures, the arc of general outline shape and bottom articular surface is consistent.The Facad structure of bottom surface is similar to the condyle of femur articular surface, and both sides are the colyliform projection downwards, depression or disappearance on the mediad.Above (inner face) dihedral angle structure of crossing in twos and form several by several planes, respectively there is a cylindrical-shaped structure that makes progress both sides or upwards forms a square body structure that raises up in the position of depression with respect to the below with respect to the position of below colyliform projection.Cylindrical bump or square body projection are gone into intercalation when joint replacement surgery in the boring of femur far-end, above several planes of (being inner face) will closely contact with the osseous tissue of the remote processor face of femur (around osteotomy surface, the boring).
Micropore tantalum coating described in the utility model mainly is coated on the surface on (being inner face) each plane and bulge-structure above the distal femoral component, and the surface of the base plane of tibia holder in the tibial component and taper or columnar projections.
This utility model passes through the tantalum micro porous coating between prosthese and skeleton; be that one of prosthetic surface creation has the micropore environment when prosthetic surface being played the effect of strengthening and protecting; the roughness and the porosity of prosthetic surface have been increased; make prosthetic surface form the synosteosis face that existing matsurface has tiny hole again; increased the grappling area of skeleton and prosthese; also created prerequisite for the long people in hole of freshman bone tissue; set up a kind of synostosis between prosthese after feasible implantation the and skeleton and reach biological fixation; avoid the loosening of prosthese and come off; increase bone amount of growing into and prosthesis stability after prosthese is implanted, thereby further guaranteed the fixed effect and the service life of prosthese.
This utility model tantalum coating artificial knee joint prosthesis, with titanium alloy (Ti-6Al-4V) or vitallium materials such as (Co30Cr6Mo0.35C) body portion as prosthese, utilize its characteristics, make prosthese the tired or damage of material can under the situation of physiological loads of bearing human body and movement load, not occur with higher mechanical strength; Use hard Al
2O
3Or SiC sand carries out sandblasting pretreatment as medium to the artificial prosthesis matrix, forms matsurface in prosthetic surface, is beneficial to Bond Strength of Coating; Take good biocompatibility, corrosion-resistant, wear-resistant, the high metal tantalum material of bond strength as coating material; contact portion at prosthese and implanted skeleton is coated with one deck tantalum micro porous coating; make that it is that one of prosthetic surface creation has the micropore environment when prosthetic surface is played the effect of strengthening and protecting, to increase bone amount of growing into and the prosthesis stability after prosthese is implanted.
The matrix material of the above prosthesis with tantalum coating, as titanium alloy (Ti-6Al-4V) or vitallium (Co30Cr6Mo0.35C) only is the comparatively specific embodiment of exemplary embodiments of this utility model, because the kind of medical medical alloy is more, so this utility model is not limited to the matrix material of the mentioned artificial prosthesis of above-mentioned several embodiment.
The above; it only is the specific embodiment of this utility model preferred embodiment; this utility model is not limited to this embodiment; for those skilled in the art; in the category that this utility model provides, carry out the interpolation of technical characterictic and replace all belonging to scope of the present utility model; therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (5)
1. tantalum coating artificial knee joint prosthesis, comprise condyle of femur assembly (1), tibia pad assembly (2), tibia holder assembly (3) and patella assembly, condyle of femur assembly (1) is installed on distal femur, be placed in tibial plateau after tibia holder assembly (3) and tibia pad assembly (2) are chimeric, patella assembly and the Human Patella tabling of handling through osteotomy; After condyle of femur assembly (1), tibia pad assembly (2), tibia holder assembly (3) reset with the patella assembly, ligament around inciting somebody to action again is long-pending and tendon tissue resets, sutured, it is characterized in that: condyle of femur assembly (1), tibia holder assembly (3) are titanium alloy T i-6Al-4V or vitallium Co30Cr6Mo0.35C material, the patella assembly is the high-molecular polythene material, and the top layer, bottom surface of the inner face of condyle of femur assembly (1) and tibia holder assembly (3) is a micropore tantalum coating.
2. tantalum coating artificial knee joint prosthesis according to claim 1 is characterized in that: described micropore tantalum coating layer thickness is the 30-800 micron, and porosity is 20%-50%.
3. tantalum coating artificial knee joint prosthesis according to claim 2 is characterized in that: described micropore tantalum coating layer thickness value is 150 microns, and porosity is 35%.
4. tantalum coating artificial knee joint prosthesis according to claim 1, it is characterized in that: described condyle of femur assembly (1) side is to have certain thickness, downward " C " arcuate structure in arc top, the bottom surface is slick full arc shape structure, be that several planes cross in twos and form different dihedral angle structures above, the arc of general outline shape and bottom articular surface is consistent; The Facad structure of bottom surface is similar to the condyle of femur articular surface, and both sides are the colyliform projection downwards, depression or disappearance on the mediad.
5. tantalum coating artificial knee joint prosthesis according to claim 1, it is characterized in that: described tibia pad assembly (2) and tibia holder assembly (3) are polythene materials, above the tibia pad assembly (2) is articular surface, central authorities are projection slightly, both sides are plate-like depression, are complementary with the both sides colyliform projection of condyle of femur assembly (1) below; The bottom surface of tibia holder assembly (3) is the central planar structure that has hollow-cone shape or columnar projections, and tibia holder assembly (3) plane, bottom surface, projection closely contact with the osseous tissue of the treated side of proximal tibia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020187747XU CN201668542U (en) | 2010-05-12 | 2010-05-12 | Tantalum Coated Artificial Knee Prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020187747XU CN201668542U (en) | 2010-05-12 | 2010-05-12 | Tantalum Coated Artificial Knee Prosthesis |
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| Publication Number | Publication Date |
|---|---|
| CN201668542U true CN201668542U (en) | 2010-12-15 |
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ID=43325956
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020187747XU Expired - Fee Related CN201668542U (en) | 2010-05-12 | 2010-05-12 | Tantalum Coated Artificial Knee Prosthesis |
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|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968301A (en) * | 2013-02-07 | 2015-10-07 | 捷迈有限公司 | Tapered tibial augment |
| CN111839828A (en) * | 2020-08-14 | 2020-10-30 | 北京大学第三医院（北京大学第三临床医学院） | A 3D printed ankle joint system prosthesis |
| CN112618114A (en) * | 2020-11-27 | 2021-04-09 | 北京市春立正达医疗器械股份有限公司 | Tantalum metal trabecular femoral condyle prosthesis and knee joint replacement body |
-
2010
- 2010-05-12 CN CN201020187747XU patent/CN201668542U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104968301A (en) * | 2013-02-07 | 2015-10-07 | 捷迈有限公司 | Tapered tibial augment |
| CN104968301B (en) * | 2013-02-07 | 2017-03-22 | 捷迈有限公司 | Tapered tibial augment |
| CN111839828A (en) * | 2020-08-14 | 2020-10-30 | 北京大学第三医院（北京大学第三临床医学院） | A 3D printed ankle joint system prosthesis |
| CN112618114A (en) * | 2020-11-27 | 2021-04-09 | 北京市春立正达医疗器械股份有限公司 | Tantalum metal trabecular femoral condyle prosthesis and knee joint replacement body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20130512 |