CN104644290A - Porous total knee prosthesis - Google Patents
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- CN104644290A CN104644290A CN201310578654.8A CN201310578654A CN104644290A CN 104644290 A CN104644290 A CN 104644290A CN 201310578654 A CN201310578654 A CN 201310578654A CN 104644290 A CN104644290 A CN 104644290A
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Abstract
A porous total knee prosthesis comprises a femoral ankle prothesis, an artificial meniscus and a tibial tray prothesis, wherein a connection hole is formed in a solid main body part of the femoral ankle prothesis; a first porous fixing layer which can play a fixing role together with the femoral bone is arranged on the surface, combined with the femur of a patient, of the solid main body part in a covering manner; a structure wrapping the femoral end subjected to osteotomy is formed on the surface, opposite to the femur of the patient, of the first porous fixing layer, and two femoral articular surfaces are symmetrically arranged on the surface, back to the femur, of the first porous fixing layer; the artificial meniscus is provided with a protrusion matched with the connection hole and used for preventing the femoral ankle prothesis from dislocation, tibial articular surfaces matched with the femoral articular surfaces and a connection part matched with the tibial tray prothesis; and a locating part matched with the connection part is arranged at the upper end of the tibial tray prothesis, a second porous fixing layer is arranged on the outer surface of a supporting part at the lower end of the tibial tray prothesis in a covering manner, and a third porous fixing layer is arranged on the surface of a tibial bonding surface. The porous total knee prosthesis has a strong binding force with the femoral bone of the patient, facilitates growing-in of bone tissues and can achieve a relatively good biological fixation effect.
Description
Technical field
The present invention relates to medical instruments field, be specifically related to ball-joint locking method and the device of any man-machine interactive (also known as passive type) mechanical arm and robot.
Background technology
Total knee replacement has become the treatment means of the whole Terminal Disease in treatment joint and femoral neck fracture in elders at present, significantly improves the quality of life of patient.The whole world accepts every year because joints lose function patient that arthritis causes carries out the quantity about 1,500,000 of prosthetic replacement's operation.Artificial hip joint replacing can alleviating pain better, improves function of joint, recovers the function of the stable of joint and limbs, obtained the approval of extensive patients.
Human body knee joint bears the effect of pulling force, pressure, torsion and interface shearing and the power such as fatigue, wearing and tearing repeatedly simultaneously when bearing a heavy burden, therefore require the tibia of implantation and femur ankle prosthese must and bone between firmly fix.
Artificial knee joint is generally made up of three parts: femur ankle prosthese, artificial meniscus, tibia support prosthese.Artificial meniscus is positioned in the middle of femur ankle prosthese and tibia support prosthese, can conduct load between femur and tibia support prosthese.
Traditional artificial knee joint main body and surface are the structure of atresia densification, usually adopt and increase surface roughness, realize the object of the frictional engagement improved between skeleton.Long term follow-up data shows, about has the patient of 10% to need in 15 years to carry out artificial joint overhaul technology after first artificial joint replacement.Artificial joint prosthesis aseptic loosening is one of modal complication after artificial joint replacement, is also the major influence factors in restriction artificial joint service life.Prosthese, once occur to loosen, can cause the problem such as pain, joint function disturbance, need what is more to carry out overhaul technology.
Therefore, how to make implanting prosthetic can obtain bone as early as possible and fix, be considered to the key of preventing artificial knee joint to loosen.Fixing of current artificial joint prosthesis, refers to tibia support prosthese and how femur ankle prosthese is fixed with bone.Fixed form is divided into cement reaction and biology to fix two types substantially.But all there are problems in these two kinds of fixed forms.
Cement reaction, by filling bone cement between installation prosthese and bone bed, forms prosthese--bone cement and bone cement--bone two interfaces, prosthese is fixed in bone cement.All there is bone cement fatigue in cement reaction, make the result of bone cement in the long-time stability maintaining artificial joint unsatisfactory, usually occur " bone cement is sick ", also namely Aseptic Loosening and bone dissolve.If but the sclerotin of patient is of poor quality, use life-span of prosthese short, situation such as activity intensity is lower, suggestion Cement is fixed.But cement reaction, because there is bone cement fatigue, make the result of bone cement in the long-time stability maintaining artificial joint unsatisfactory, usually occur " bone cement is sick ", also namely Aseptic Loosening and bone dissolve.
Biology is fixed, and fixes also known as none-cement, is the porous surface by artificial joint prosthesis and bone close contact, realizes a kind of fixed form that Bone Ingrowth reaches biological locking.Biology, fixed fae body depended on the profile of prosthese and the near press-fit of bone bed at the implantation initial stage, and in the Bone Ingrowth stage, then depend on the surface treatment effect of prosthese, the porous surface/coating of prosthetic surface determines the combination of prosthese and bone, thus determines fixing firmness.Biology, fixed surface porous was mainly divided into following two kinds: (1) megathyrid surface (as Corallium Japonicum Kishinouye face type, Margarita face type), prosthese and the synosteosis with megathyrid surface are that mechanicalness " two dimension " is fixed, become compressive stress to realize by means of only the shearing force changing bone-prosthetic surface and fix, this mode improves limited strength.(2) pore type is fixed, and is divided into again two-dimensional surface micropore and three-dimensional porous design.Two-dimensional surface micropore is realize the microcellular structure on surface by the method such as metal beadlet sintering, sandblasting, differential arc oxidation (aperture mostly is micron order mostly, aperture layer is communicated with rate variance), result of study is had to show, be suitable for the aperture of Bone Ingrowth between 150-700 micron, when aperture is less than 100 microns, the just fibrous tissue of growing in hole, and non-bone tissue.Therefore the micropore of two-dimensional surface can not provide Bone Ingrowth, only has " bone long on " phenomenon, its interface bond strength and self-bone grafting ability poor; And three-dimensional porous surface be mostly by the method such as plasma spraying, chemical vapour deposition (CVD) realize (aperture is at 100-700 micron, porosity is about 25% ~ 75%), than two-dimentional porous surface, there is stronger self-bone grafting ability and interface bond strength, but on a large amount of Clinical practice, do not obtain good fixed effect, along with clinical case of reprocessing, its defect comes out gradually, because the adhesion of coating and prosthese is weak, occur that coating is stripped off, to rupture and the reason such as granule formation causes prosthetic loosening.Perspective study shows, hydroxyapatite (HA) coating prosthese has the loosening rate of 5% in mid-term, be obviously greater than simple cement reaction prosthese, and the synosteosis of Periprosthetic discontinuous.When this kind of artificial joint is installed, fully will ensure that artificial joint and the bone cavity put into want size to mate very good, can not leave space, the sclerotin simultaneously in bone cavity also will have the fixation at support and initial stage preferably, artificial joint just can be made to stablize, and after being convenient to, sclerotin grows into.If cementless artificial hip joint occurs to loosen, just there will be discrepancy, weak to the corrosivity of osseous tissue, the disappearance amount of osseous tissue is few, is easy to overhaul.
Perspective study shows, current fixed fae body biology improves early stage fixed effect, but in, fixed effect at a specified future date takes on a new look not yet, the stripping off of main because coating, to rupture and the reason such as formation of granule causes prosthetic loosening, and even lost efficacy.
Summary of the invention
The object of the invention is to the defect overcoming above-mentioned prior art, provide a kind of strong with patient's femur sclerotin adhesion, be conducive to the artificial knee joint that osseous tissue is grown into, can realize preferably biology fixed effect.
Porous artificial knee joint provided by the invention, comprise femur ankle prosthese, tibia support prosthese and the artificial meniscus between described femur ankle prosthese and described tibia support prosthese, it is characterized in that, described femur ankle prosthese has solid body, the solid body of described femur ankle prosthese offers connecting hole, in the surface that described solid body combines with the femur of patient, be covered with the first porous fixed layer that can be combined fixation with femur sclerotin; On described first porous fixed layer, the surface relative with the femur of patient is arranged with ankle faying face and at faying face between ankle faying face and between the ankle being positioned at described connecting hole both sides described in two, form the structure of the femur end after encasing osteotomy, solid body and the surface opposing with the femur of patient of described femur ankle prosthese are arranged with two femoral joint faces; Described artificial meniscus has one and can to coordinate with described connecting hole and for preventing the projection of described femur ankle prothesis dislocation, the tibial prosthesis face of matching with described femoral joint face, the connecting portion that matches with described tibia support prosthese; Described tibia support prosthese comprises tibia marrow solid body, and described tibia marrow solid body upper end has the location division that can coordinate with described connecting portion, and lower end is support, and this support outer surface is covered with the second porous fixed layer.
In the further structural design of the present invention, the surface relative with described support, the location division on described tibia support prosthese is tibia faying face, and described tibia faying face surface is covered with the 3rd porous fixed layer.
In the structural design that the present invention is concrete, described first porous fixed layer, described second porous fixed layer and described 3rd porous fixed layer thickness 0.2-3mm, aperture 0.2-0.8mm, porosity 30-90%.
In the structural design that the present invention is concrete, the described connecting portion on described artificial meniscus comprises boss and is arranged at the locating flange on this boss; Described location division on described tibia support prosthese comprises the cavity coordinated with described boss and the central channel coordinated with described locating flange.
In the structural design that the present invention is concrete, described tibia support prosthese support has gradually little in external diameter frustum structure downwards, and along the axis of the large end periphery of described frustum, offer at least two symmetrical strip grooves downwards, the intersection of described strip groove and frustum periphery seamlessly transits.
In the structural design that the present invention is concrete, described femoral joint face is high burnishing surface.
Femur ankle prosthese of the present invention and tibia support prosthese are made up of vitallium, rustless steel, titanium, titanium alloy, nickel cobalt (alloy) or metal tantalum material, and described artificial meniscus is made up of ultra high molecular polyethylene material.
In the structural design that the present invention is concrete, the solid body both sides of described femur ankle prosthese be also provided with for the femur ankle of patient outside combine auxiliary fixing location wing.
The present invention on described solid body, and with Human Patella or patellar prosthesis contact surface centre position, be provided with patellar groove, the both sides of described patellar groove are respectively equipped with two trochlear surfaces, form the coaster part that is flexibly connected with patella or patellar prosthesis.
The present invention is intended to make artificial knee joint have more excellent fixed effect biology (Bone Ingrowth).On the surface that femur ankle prosthese combines with patient's femur sclerotin, the support of tibia support prosthese is arranged can integrated three-dimensional porous structure sheaf, utilize porous fixed layer and knee-joint prosthesis bond strength large, the porosity of porous fixed layer is high, the aperture of porous fixed layer is beneficial to osseous tissue and the feature such as grows into, make patient's diaphysis form interlocking with between prosthese to be combined, simultaneously because porous fixed layer has stronger self-bone grafting ability, be easier to Bone Ingrowth and extend intertexture in interior company in duct, can overcome current artificial prosthesis utilizes coating to carry out the deficiency of biological fixation, thus realize more excellent fixed effect biology, extend the service life of artificial prosthesis.
Accompanying drawing explanation
Fig. 1 is the porous artificial knee joint installation diagram that the embodiment of the present invention provides;
Fig. 2 is the porous artificial knee joint explosive view that the embodiment of the present invention provides;
Fig. 3 A is the first porous fixed layer structural representation of the femur ankle prosthese that the embodiment of the present invention provides;
Fig. 3 B is the solid body structural representation of the femur ankle prosthese that the embodiment of the present invention provides;
Fig. 3 C is the femur ankle prosthese first viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 3 D is the femur ankle prosthese second viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 3 E is the A-A cross-sectional view of Fig. 3 D;
Fig. 4 A is the artificial meniscus first viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 4 B is the artificial meniscus second viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 4 C is artificial meniscus the 3rd viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 5 A is the tibia support prosthese first viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 5 B is the B-B structural representation of Fig. 5 A;
Fig. 5 C is the tibia support prosthese second viewing angle constructions schematic diagram that the embodiment of the present invention provides;
Fig. 5 D is the tibia support prosthese decomposition texture schematic diagram that the embodiment of the present invention provides;
Fig. 5 E is the second porous fixed layer structural representation of the tibia support prosthese that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See Fig. 1-Fig. 5, the invention provides a kind of porous artificial knee joint, comprise femur ankle prosthese 1, tibia support prosthese 3 and the artificial meniscus 2 between described femur ankle prosthese 1 and described tibia support prosthese 3, see Fig. 3 A-Fig. 3 E, wherein said femur ankle prosthese has solid body 12, the solid body 12 of described femur ankle prosthese 1 offers connecting hole 13, is positioned at solid body 12 center; In the surface that described solid body 12 combines with the femur of patient, be covered with the first porous fixed layer 11 that can be combined fixation with femur sclerotin, the three-dimensional porous structure that it has is beneficial to osseous tissue and grows into fixing; On described first porous fixed layer 11, the surface relative with the femur of patient is arranged with ankle faying face 111 and at faying face 112 between ankle faying face 111 and between the ankle being positioned at described connecting hole 13 both sides described in two, forms the structure of the femur end after encasing osteotomy; In the solid body 12 of described femur ankle prosthese 1, and on the surface opposing with the femur of patient, being arranged with two femoral joint faces, femoral joint face 1231, two 1231 is cambered surface, is convenient to the rotation in joint;
See Fig. 4 A-Fig. 4 C, described artificial meniscus 2 is positioned between femur ankle prosthesis 1 and tibia support prosthese 3, for conducting load, it comprises a plate body 20, and this body 20 is for having the discoid component of arcuate perimeter, and its upper surface is outwards provided with a conoid protuberance 21, can coordinate with described connecting hole 13, can being inserted in this connecting hole 13 during installation, for limiting knee articulation degree, preventing described femur ankle prosthese 1 from dislocating; Described body 20 upper surface, is provided with the tibial prosthesis face 22 of matching with the femoral joint face 1231 of femur ankle prosthese 1, is divided into projection 21 both sides, and described body 20 lower end has the connecting portion 23 matched with described tibia support prosthese 4;
See Fig. 5 A-Fig. 5 E, described tibia support prosthese 3 comprises tibia marrow solid body 32, described tibia marrow solid body 32 upper end has the location division 321 that can coordinate with described connecting portion 23, and lower end is cylindrical support part 322, and this support 322 outer surface is covered with the second porous fixed layer 31.
In said structure, the stationary plane that artificial prosthesis contacts with sclerotin arranges porous fixed layer, and its loose structure is conducive to growing into of osseous tissue.Like this, porous fixed layer and knee-joint prosthesis bond strength can be made to increase, and porous fixed layer compares to existing coating formulation has stronger self-bone grafting ability, be easier to Bone Ingrowth and extend intertexture in interior company in duct, make between bone with prosthese, to form interlocking to be combined, thus realize more excellent fixed effect biology.Artificial femur ankle prosthese of the present invention and artificial tibia support prosthese carry out loose structure design by CAD software, it is standby that the artificial prosthesis with loose structure realizes the preparation of porous fixed layer or porous fixed layer and artificial prosthesis integration system by three-dimensional fast shaping system, and the design of above-mentioned porous fixed layer, be applicable to the artificial knee joint prosthesis use that the none-cement of all models is fixing, highly versatile, can realize suitability for industrialized production.
Please again see Fig. 3 A-Fig. 3 E, in the structural design that the present invention is concrete, described femur ankle prosthese 1 can be made up of vitallium, rustless steel, titanium, titanium alloy, nickel cobalt (alloy) or metal tantalum material, described solid body 12 comprises the bottom 122 uprightly arranging long bound edge 121, short bound edge 123 and be connected between long bound edge 121 and short bound edge 123, and forming outer peripheral face is the concave architecture of cambered surface.Described short bound edge 123 periphery, namely with the surface that the femur of patient is opposing, be arranged with femoral joint face 1231 described in two, in the centre position of described bottom 122, upwards be provided with an arch support platform 1221, described connecting hole 13 is vertically arranged in arch support platform 1221, can be the rectangular opening shown in diagram or polygonal hole, it has the straight line that can prevent from rotating.The plane that the both sides 1222 of described arch support platform 1221 are formed and between ankle, fit in faying face 112 back side, bottom 122 upper surface 1223 being positioned at arch support platform 1221 two side ends is fitted with ankle faying face 111 back side.Like this, the first porous fixed layer 11 is covered on long bound edge 121, the medial surface of short bound edge 123 and arch support platform 1221, both sides 1222 and upper surface 1223, forms the structure of the femur end after encasing osteotomy.Because the first porous fixed layer 11 being covered in solid body 12 inner surface is made up of multiple different levels and different surfaces, and design according to the femur end shape after osteotomy, so can preferably and human femur under loading combine, faying face between first porous fixed layer 11 and femur is increased, is convenient to the infiltration growth of osseous tissue and the first porous fixed layer 11 and being separated between femur end can be avoided.
Further, described femoral joint face 1231 is arc height burnishing surface, and can reduce the coefficient of friction between femur ankle prosthese 1 and artificial meniscus 2, femoral joint face 1231 and east ethnic group knee-joint anatomy characteristic match simultaneously, can realize larger range of flexion.
See Fig. 3 B and Fig. 3 C, described in two between femoral joint face 1231, be also arranged with nest 1232 between ankle, be convenient to the formation of femoral joint face 1231 arcwall face.
Please again see Fig. 3 B and Fig. 3 C, the solid body 12 of described femur ankle prosthese 1 and in the both sides of connecting hole 13, also be provided with location wing 14, this location wing 14 is in the arcuate groove towards connecting hole 13 direction indent, for with the femur ankle of patient outside combine auxiliary fixing, ensure the stability that whole knee joint is connected with human femur under loading.
See Fig. 3 D, in the structural design that the present invention is concrete, along its vertical position in the middle of long bound edge 121 outer peripheral face of described solid body 12, be provided with patellar groove 1211, the both sides of described patellar groove 1211 are respectively equipped with two trochlear surfaces 1222, form the coaster part that is flexibly connected with patella or patellar prosthesis, with being flexibly connected of Human Patella or patellar prosthesis contact surface, be convenient to whole kneed rotation.
Refer to Fig. 4 A-Fig. 4 C, in the structural design that the present invention is concrete, described artificial meniscus 2 is made up of ultra high molecular polyethylene material.Because meniscus of knee joint is kneed important component part, having increases joint contact face, lubricating joint, bears and transmit load between tibia and femur, absorbs damping and keep the functions such as kneed functional structure.Therefore, adopt metal and high-molecular polythene to form articular surface, instead of metal and metal to articular surface, the biomechanical compatibility of human body knee joint activity can be increased like this.The front and back end of described artificial meniscus 2 projection 21 is along being arranged with arc slide surface 24 respectively in tibial prosthesis face 22 bottom it, with rounding off bottom projection 21, be convenient to connection and the installation of projection 21 and femur ankle prosthese 1 on the one hand, another aspect can be conducive to artificial meniscus 2 and tibia support prosthese 3 rotates around the front and back of femur ankle prosthese 1; Described connecting portion 23 comprises the boss 232 that periphery is arcuation, this boss 232 centre position is outwards also provided with a locating flange 231, in illustrated embodiment, the structure of this locating flange 231 is open circles cover, has both been convenient to processing, and has been conducive to the weight alleviating whole component simultaneously.
Refer to Fig. 5 A-Fig. 5 E, in the structural design that the present invention is concrete, described tibia support prosthese 3 is made up of vitallium, rustless steel, titanium, titanium alloy, nickel cobalt (alloy) or metal tantalum material, described location division 321 structure of tibia marrow solid body 32 upper end and connecting portion 23 physical fit of artificial meniscus 2, comprise and the cavity 3211 of described boss 232 structure and form fit and the central channel 3213 that coordinates with described locating flange 231, artificial meniscus 2 can be made to be socketed with tibia support prosthese 3.Like this, artificial meniscus 2 can be made to be fixed by dual nested realization with tibia support prosthese 3, can realize firmly locating fixing between the two, and the processing of this structure is simple, easy to manufacture and assembling is also very convenient.The cylindrical support part 322 of described tibia marrow solid body 32 lower end has gradually little in external diameter frustum structure downwards, along the axis of the large end periphery of described frustum, offer at least two symmetrical strip grooves 3221 downwards, described strip groove 3221 seamlessly transits with the intersection of frustum periphery.Illustrated embodiment is depicted as four strip arc grooves, and support 322 cross section is shown as from cylinder seamlessly transitting to diamond curve.Correspondingly, the second porous fixed layer 31 periphery shape of cross section is consistent with support 322 shape of cross section.Like this, be conducive to coordinating of tibia support prosthese 3 and human body thigh bone, avoid tibia support prosthese 3 and loosen, the rotation of the ossa tibiale posterius holder prosthese 3 that simultaneously can prevent from being connected, adds the stability of biological fixation.
Further, in the concrete structure of described tibia support prosthese 3, the surface relative with support 322, its location division 321 is tibia faying face 3213, described tibia faying face 3213 matches with east ethnic group tibial plateau osteotomy anatomical structure, and tibia support prosthese 3 can be made to have with Tibial osteotomy, there is maximum contact area, reduce the pressure that tibia sclerotin is subject to; In this tibia faying face 3213 surface, be covered with the 3rd porous fixed layer 3213 contacted with Tibial osteotomy, consistent with the loose structure of the first porous fixed layer 11, second fixed layer 31.Due to tibia faying face 3213 and human tibia surface contact, so place's design loose structure, contact that is more large-area and osseous tissue can be realized on the basis of the first porous fixed layer 11, second porous fixed layer 31, more be conducive to growing into of osseous tissue, biological fixation better effects if.
Particularly, the thickness of the first porous fixed layer 11 of the present invention, described second porous fixed layer 31 and the 3rd porous fixed layer 3213 can be 0.2-3mm, aperture 0.2-0.8mm, porosity 30-90%.Above-mentioned parameter carries out structural design by CAD software operation, is made by three-dimensional fast shaping system, and the loose structure of its aperture and porosity and Human cancellous bone is close, is conducive to osseous tissue and grows into, and can realize firmly fixing biology.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a porous artificial knee joint, comprise femur ankle prosthese, tibia support prosthese and the artificial meniscus between described femur ankle prosthese and described tibia support prosthese, it is characterized in that, described femur ankle prosthese has solid body, the solid body of described femur ankle prosthese offers connecting hole, in the surface that described solid body combines with the femur of patient, be covered with the first porous fixed layer that can be combined fixation with femur sclerotin; On described first porous fixed layer, the surface relative with the femur of patient is arranged with ankle faying face and at faying face between ankle faying face and between the ankle being positioned at described connecting hole both sides described in two, form the structure of the femur end after encasing osteotomy, solid body and the surface opposing with the femur of patient of described femur ankle prosthese are arranged with two femoral joint faces; Described artificial meniscus has one and can to coordinate with described connecting hole and for preventing the projection of described femur ankle prothesis dislocation, the tibial prosthesis face of matching with described femoral joint face, the connecting portion that matches with described tibia support prosthese; Described tibia support prosthese comprises tibia marrow solid body, and described tibia marrow solid body upper end has the location division that can coordinate with described connecting portion, and lower end is support, and this support outer surface is covered with the second porous fixed layer.
2. porous artificial knee joint according to claim 1, is characterized in that: the surface relative with described support, the location division on described tibia support prosthese is tibia faying face, and described tibia faying face surface is covered with the 3rd porous fixed layer.
3. porous artificial knee joint according to claim 1, is characterized in that: described first porous fixed layer and described second porous fixed layer thickness 0.2-3mm, aperture 0.2-0.8mm, porosity 30-90%.
4. porous artificial knee joint according to claim 2, is characterized in that: described 3rd porous fixed layer thickness 0.2-3mm, aperture 0.2-0.8mm, porosity 30-90%.
5. the porous artificial knee joint according to any one of claim 1-4, is characterized in that: the described connecting portion on described artificial meniscus comprises boss and is arranged at the locating flange on this boss; Described location division on described tibia support prosthese comprises the cavity coordinated with described boss and the central channel coordinated with described locating flange.
6. the porous artificial knee joint according to any one of claim 1-4, it is characterized in that: described tibia support prosthese support has gradually little in external diameter frustum structure downwards, and along the axis of the large end periphery of described frustum, offer at least two symmetrical strip grooves downwards, the intersection of described strip groove and frustum periphery seamlessly transits.
7. the porous artificial knee joint according to any one of claim 1-4, is characterized in that: described femoral joint face is high burnishing surface.
8. the porous artificial knee joint according to any one of claim 1-4, it is characterized in that: described femur ankle prosthese and tibia support prosthese are made up of vitallium, rustless steel, titanium, titanium alloy, nickel cobalt (alloy) or metal tantalum material, and described artificial meniscus is made up of ultra high molecular polyethylene material.
9. the porous artificial knee joint according to any one of claim 1-4, is characterized in that: the solid body both sides of described femur ankle prosthese be also provided with for the femur ankle of patient outside combine auxiliary fixing location wing.
10. the porous artificial knee joint according to any one of claim 1-4, it is characterized in that: on described solid body, and with Human Patella or patellar prosthesis contact surface centre position, be provided with patellar groove, the both sides of described patellar groove are respectively equipped with two trochlear surfaces, form the coaster part be flexibly connected with patella or patellar prosthesis.
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| CN201310578654.8A CN104644290A (en) | 2013-11-18 | 2013-11-18 | Porous total knee prosthesis |
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| CN105662657A (en) * | 2015-06-02 | 2016-06-15 | 北京大学第三医院 | Preartis-matching femoral prosthesis for artificial knee joint |
| CN107198598A (en) * | 2016-03-18 | 2017-09-26 | 重庆润泽医药有限公司 | A kind of artificial knee joint |
| CN107280812A (en) * | 2017-07-18 | 2017-10-24 | 优适医疗科技（苏州）有限公司 | A kind of artificial knee joint prosthesis |
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| 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 |
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| CN111281610A (en) * | 2019-12-30 | 2020-06-16 | 雅博尼西医疗科技(苏州)有限公司 | Connection structure of porous structure and substrate |
| CN111281614A (en) * | 2020-03-11 | 2020-06-16 | 北京市春立正达医疗器械股份有限公司 | Knee joint prosthesis |
| CN112220591A (en) * | 2020-11-05 | 2021-01-15 | 嘉思特华剑医疗器材(天津)有限公司 | Wedge-shaped pressurization biological type single compartment knee joint tibial platform |
| 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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| CN105662657A (en) * | 2015-06-02 | 2016-06-15 | 北京大学第三医院 | Preartis-matching femoral prosthesis for artificial knee joint |
| CN104921845A (en) * | 2015-07-03 | 2015-09-23 | 江苏奥康尼医疗科技发展有限公司 | Bone defect filler |
| CN107198598A (en) * | 2016-03-18 | 2017-09-26 | 重庆润泽医药有限公司 | A kind of artificial knee joint |
| CN110022798A (en) * | 2016-12-06 | 2019-07-16 | 捷迈有限公司 | Shin bone plug-in unit |
| CN107280812A (en) * | 2017-07-18 | 2017-10-24 | 优适医疗科技（苏州）有限公司 | A kind of artificial knee joint prosthesis |
| CN109528356A (en) * | 2019-01-21 | 2019-03-29 | 北京爱康宜诚医疗器材有限公司 | Compound insert |
| CN109620477B (en) * | 2019-02-01 | 2024-04-02 | 北京爱康宜诚医疗器材有限公司 | Meniscus substitute and knee joint prosthesis with same |
| 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 |
| CN110538012A (en) * | 2019-09-17 | 2019-12-06 | 北京爱康宜诚医疗器材有限公司 | Knee joint prosthesis |
| CN110772359A (en) * | 2019-10-15 | 2020-02-11 | 佛山市第一人民医院（中山大学附属佛山医院） | Manufacturing method of joint prosthesis and manufacturing method of test mold thereof |
| CN110772359B (en) * | 2019-10-15 | 2022-02-01 | 佛山市第一人民医院（中山大学附属佛山医院） | Manufacturing method of joint prosthesis and manufacturing method of test mold thereof |
| CN111281610B (en) * | 2019-12-30 | 2023-08-18 | 雅博尼西医疗科技(苏州)有限公司 | Porous structure and connection structure of substrate |
| CN111281610A (en) * | 2019-12-30 | 2020-06-16 | 雅博尼西医疗科技(苏州)有限公司 | Connection structure of porous structure and substrate |
| CN111281614A (en) * | 2020-03-11 | 2020-06-16 | 北京市春立正达医疗器械股份有限公司 | Knee joint prosthesis |
| CN111281614B (en) * | 2020-03-11 | 2022-03-25 | 北京市春立正达医疗器械股份有限公司 | Knee joint prosthesis |
| CN112220591A (en) * | 2020-11-05 | 2021-01-15 | 嘉思特华剑医疗器材(天津)有限公司 | Wedge-shaped pressurization biological type single compartment knee joint tibial platform |
| 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 |
| CN114886620A (en) * | 2022-04-27 | 2022-08-12 | 大连大学附属中山医院 | Biological tantalum metal knee joint prosthesis |
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Application publication date: 20150527 |