CN109662812A - A kind of knee-joint prosthesis - Google Patents
A kind of knee-joint prosthesis Download PDFInfo
- Publication number
- CN109662812A CN109662812A CN201910154442.4A CN201910154442A CN109662812A CN 109662812 A CN109662812 A CN 109662812A CN 201910154442 A CN201910154442 A CN 201910154442A CN 109662812 A CN109662812 A CN 109662812A
- Authority
- CN
- China
- Prior art keywords
- potsherd
- prosthesis
- femoral condyle
- lateral femoral
- knee
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 229920000642 polymer Polymers 0.000 claims description 17
- 210000000988 bone and bone Anatomy 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 230000007774 longterm Effects 0.000 claims description 5
- 210000000689 upper leg Anatomy 0.000 claims description 5
- 239000003462 bioceramic Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 230000008467 tissue growth Effects 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 1
- 210000002303 tibia Anatomy 0.000 abstract description 34
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 229920002521 macromolecule Polymers 0.000 abstract description 6
- 229910021645 metal ion Inorganic materials 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 210000001124 body fluid Anatomy 0.000 description 6
- 239000010839 body fluid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 2
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 229920002627 poly(phosphazenes) Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3859—Femoral components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/389—Tibial components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2002/3093—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth for promoting ingrowth of bone tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
Abstract
The invention discloses a kind of knee-joint prosthesis, including lateral femoral condyle prosthesis, liner, tibial plateau support, the liner is located in tibial plateau support, the lateral femoral condyle prosthesis is equipped with the potsherd for reducing lateral femoral condyle prosthesis and pad wear, the potsherd is one group of potsherd of dispersed placement, by being welded to connect, it is secondary that the convex outward of potsherd contacts composition friction with the upper surface of liner for the potsherd and lateral femoral condyle prosthesis.Several potsherds are distributed on lateral femoral condyle prosthesis in the knee-joint prosthesis, lateral femoral condyle prosthesis and shin bone liner are separated, lateral femoral condyle prosthesis and shin bone pad wear amount are reduced；Friction between metal and macromolecule polymer material is changed into the friction of metal and ceramics, reduce metal ion caused by metal and macromolecule friction to be precipitated, potsherd dispersed placement keeps potsherd not easily broken, mitigate kneed quality, keep patient motion lighter and handier, and there is certain impact resistance and Noise Reduction.
Description
Technical field
The present invention relates to biomedical engineering orthopaedics implant prosthese technical fields, false more particularly, to a kind of knee joint
Body.
Background technique
Total knee replacement is that a kind of effective clinic of injury of knee joint caused by treating because of wound or disease is controlled
Treatment method.Artificial knee joint system is made of lateral femoral condyle prosthesis, shin bone liner, tibial plateau support.It is closed as artificial knee is applied to
The biomaterial of section prosthese will not only reach good repair, mitigate patient's slight illness, restore outside knee joint function, more important
Be cannot have an adverse effect to the tissue around human body knee joint.
Common knee-joint prosthesis is made of metal lateral femoral condyle prosthesis, polyethylene shin bone liner and metal tibial platform support.
Lateral femoral condyle prosthesis and shin bone liner constitute friction pair.The artificial knee joint type clinically used at present is metal condyle of femur
Prosthese and macromolecule shin bone liner are with pair.With the secondary friction pair formed in long-term process of friction and wear, there are toxic for this
Metal ion is precipitated, and accumulation will lead to chronic disease to a certain concentration in human body, while wear debris can induce Periprosthetic
Bone tissue generate bone dissolution；This is very high with the wear rate that the secondary friction pair formed pads macromolecule shin bone, most common height
Molecular material is ultra-high molecular weight polyethylene, and a year abrasion loss is about 0.1-0.2mm, in long-term friction process, be will lead to
The thickness of macromolecular lining is constantly reduced, and then influences the intensity of shin bone liner.In addition, there is also the artificial knees of another type to close
Save prosthese: ceramic lateral femoral condyle prosthesis and macromolecule shin bone liner are with pair, this has good wearability with secondary tool, and abrasion loss is very
Small, also there is no metal ions to be precipitated, and has good development prospect, but due to ceramic fragility inherently, causes
Ceramic lateral femoral condyle prosthesis is easy to break, and at present also in the laboratory research stage, there is no clinical applications.
Therefore, the friction for reducing lateral femoral condyle prosthesis and shin bone liner, reduces the abrasion loss of shin bone liner, improves it and uses the longevity
Life is the necessity for improving Quality of Life of Patients.
Summary of the invention
In view of the shortcomings of the prior art, technical problem to be solved by the invention is to provide a kind of knee-joint prosthesis, to reach
Reduce the abrasion of lateral femoral condyle prosthesis and liner, reduce ceramic fragmentation risk, reduce Metal ion release, extending knee-joint prosthesis makes
With the purpose in service life.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is as follows:
The knee-joint prosthesis, including lateral femoral condyle prosthesis, liner, tibial plateau support, the liner are located in tibial plateau support,
The lateral femoral condyle prosthesis is equipped with the potsherd for reducing lateral femoral condyle prosthesis and pad wear, and the potsherd is dispersed placement
One group of potsherd, the potsherd and lateral femoral condyle prosthesis are by being welded to connect, the convex outward of potsherd and the upper table of liner
It is secondary that face contact constitutes friction.
Preferably, being equipped with intermediate between the potsherd, the intermediate is high molecular polymer.The ceramics
The outer peripheral surface of piece and intermediate connected component is equipped with groove or protrusion.
Preferably, the convex outward of the potsherd protrudes from outer surface or and the lateral femoral condyle prosthesis of lateral femoral condyle prosthesis
Outer surface in same curved surface.
Preferably, the convex outward curvature of the potsherd is consistent with the outer surface curvature of lateral femoral condyle prosthesis.
Preferably, the lateral femoral condyle prosthesis has two condyle outer surfaces, dispersed placement is equipped on two condyle outer surfaces
Potsherd.
Preferably, the shape of the potsherd is cylinder and/or polygon prism or irregular shape.
Preferably, the liner is high molecular polymer or its compound or surface-modified, lateral femoral condyle prosthesis are
Titanium and its alloy or tantalum and its alloy or medical stainless steel or cochrome, potsherd are bioceramic.
Preferably, what the inner surface and tibial plateau support lower external face of the lateral femoral condyle prosthesis were contacted with host bone
Part, which is equipped with, is suitable for tissue growth, convenient for biology connection, one group of hole of the clinical long-term connection effect of enhancing.
Preferably, the upper surface of the liner is equipped with one group of pit for storing human body fluid.
Compared with prior art, the present invention having the advantage that
Several potsherds are distributed on lateral femoral condyle prosthesis in the present invention, it, will be golden instead of traditional metal lateral femoral condyle prosthesis
Belong to and high molecular polymer liner between friction be changed into ceramics and high molecular polymer pad between friction, while potsherd it
Between have gap, accommodate lubricating fluid, thus reduce lateral femoral condyle prosthesis and shin bone liner coefficient of friction, reduce abrasion loss, subtract
Metal ion precipitation is lacked；The fragmentation risk of ceramic condyle of femur type prosthese can also be reduced simultaneously；Mitigate kneed quality,
Keep patient motion lighter and handier；High molecular polymer between potsherd has certain impact resistance and Noise Reduction.
Detailed description of the invention
Content expressed by each width attached drawing of this specification and the label in figure are briefly described below:
Fig. 1 is a kind of structural schematic diagram of knee-joint prosthesis of the present invention.
Fig. 2 is a kind of structural schematic diagram of potsherd on lateral femoral condyle prosthesis in Fig. 1.
Fig. 3 is potsherd another kind structural schematic diagram on lateral femoral condyle prosthesis in Fig. 1.
Fig. 4 is knee-joint prosthesis another kind structural schematic diagram of the present invention.
Fig. 5 is that shin bone pads a kind of upper structural schematic diagram of potsherd in Fig. 4.
Fig. 6 is that shin bone pads upper potsherd another kind structural schematic diagram in Fig. 4.
In figure: 1. lateral femoral condyle prosthesis, 201. potsherds I, 202. potsherds II, 3. shin bones liner, 4. tibial plateau supports.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation.
Knee-joint prosthesis, including lateral femoral condyle prosthesis, shin bone liner, tibial plateau support, shin bone liner are located at tibial plateau support
On, lateral femoral condyle prosthesis outer surface is corresponding with shin bone liner upper surface, and lateral femoral condyle prosthesis outer surface or shin bone liner upper surface are set
Have for reducing the potsherd to rub between the two, potsherd is one group, one group of potsherd discrete type distribution, concretely uniformly
Or non-uniform spacing arrangement.Non-uniform spacing arrangement can increase contact area, to reduce contact stress.
Wherein, the part that the inner surface of lateral femoral condyle prosthesis and tibial plateau support lower external face are contacted with host bone is equipped with
It is suitable for tissue growth, convenient for biology connection, one group of hole of the clinical long-term connection effect of enhancing, one group of Kong Weiyi group is micro-
Hole；Micropore can make bone tissue grow to the inside, reinforce the connection in joint and human body host bone, prosthese can be improved and fix in human body
Reliability, guarantee using effect.
The present invention is illustrated below by specific embodiment, specific as follows:
As shown in Figure 1 to Figure 3, the knee-joint prosthesis, including lateral femoral condyle prosthesis 1, potsherd II 202, shin bone liner 3 and shin
Bone platform support 4, wherein pad as high molecular polymer or its compound or surface-modified, lateral femoral condyle prosthesis is titanium and its conjunction
Gold or tantalum and its alloy or medical stainless steel or cochrome, potsherd are bioceramic.
Potsherd II is quadrangular shape body or hexagonal prism or cylindrical body, one side and the lateral femoral condyle prosthesis appearance of potsherd II
By being welded together, lateral femoral condyle prosthesis 1 is prepared using powder metallurgy sintered method in face, and the material of lateral femoral condyle prosthesis 1 is preferred
Two end faces for medical titanium alloy, potsherd II are arc, and potsherd is in same cambered surface, potsherd II after laser welding
Material be preferably aluminium oxide ceramics, it is secondary that the convex outward of potsherd contacts composition friction with the upper surface of liner.
The shape of potsherd is cylinder and/or polygon prism, and one group of potsherd non-uniform spacing arrangement can increase contact surface
Product.
Two end faces of potsherd are arc；Specifically, potsherd has convex outward and inner sunken face；Potsherd
Convex outward protrudes from the outer surface of lateral femoral condyle prosthesis or with the outer surface of lateral femoral condyle prosthesis in same curved surface.Outside potsherd
Convex curved surface is consistent with the outer surface curvature of lateral femoral condyle prosthesis.Lateral femoral condyle prosthesis has two condyle outer surfaces, on two condyle outer surfaces
It is equipped with the potsherd of dispersed placement.Uniform force, it is reliable and stable.
Intermediate is equipped between potsherd, intermediate is high molecular polymer, and the surface of high molecular polymer is lower than ceramics
The convex outward of piece.The outer peripheral surface of potsherd and intermediate connected component is equipped with groove or protrusion.Preferably, on potsherd
Groove is helicla flute, has high molecular polymer in groove, the setting of groove increases the withdrawal force and binding force of potsherd, makes
Potsherd fixation is stronger.
There is certain gap between adjacent ceramic piece, can be used for storing human body fluid in gap；And the upper table of liner
Face is equipped with one group of hole for storing human body fluid, and one group of hole is one group of micro- hole, for storing human body fluid；Lubricate potsherd with
The contact surface of shin bone liner reduces the two friction.
Alternatively, the outer surface of lateral femoral condyle prosthesis is equipped with groove, groove is for accommodating supporting mass, one group of potsherd dispersed placement
On supporting mass, it is secondary that the convex outward of potsherd contacts composition friction with the upper surface of liner.Wherein, supporting mass is polyphosphazene polymer
Close object.The contact surface of potsherd and femoral prosthesis reduces processing technology, reduces cost, while having certain without finishing
Impact resistance and Noise Reduction.The outer peripheral surface of potsherd and supporting mass connected component is equipped with groove or protrusion.Preferably, ceramic
The groove of on piece is helicla flute.Supporting mass is high molecular polymer, and potsherd is embedded in high molecular polymer, is had in groove
High molecular polymer, the setting of groove increase the withdrawal force and binding force of potsherd, keep potsherd fixation stronger.
As shown in Figures 4 to 6, the knee-joint prosthesis, including lateral femoral condyle prosthesis, potsherd I 201, shin bone liner and shin bone
Platform support, lateral femoral condyle prosthesis 1 are metal structure, are connected convenient for lateral femoral condyle prosthesis with skeleton.Potsherd I is quadrangular shape body
Or hexagonal prisms or cylindrical body, the effect of shin bone liner 3 are similar to meniscus structure, and the above is half a month arc, below at platform-like,
Top is contacted with lateral femoral condyle prosthesis 1, and lower part and tibial plateau support 4 are fixed, potsherd I be embedded in shin bone liner 3 to it is recessed be in one
Determine on the semilune curved surface of radian.
Potsherd I protrudes certain altitude, and the preparation method of shin bone liner 3 includes injection molding or 3D increases material manufacturing technology, femur
Condyle prosthese and powder metallurgy sintered method or plasma spraying method can be used for tibial plateau support preparation method or 3 D-printing is rapid-result fastly
Type technology.
The material of shin bone liner and supporting mass uses high molecular polymer, preferably ultra-high molecular weight polyethylene, potsherd I
Material is bioceramic, preferably aluminium oxide ceramics, and potsherd I is padded with shin bone to be linked by filled polyethylene material.
Potsherd and the outer peripheral surface of shin bone liner coupling part are equipped with groove or protrusion；Preferably, groove is helicla flute,
Groove is placed in shin bone liner, increases the withdrawal force and binding force of potsherd, and potsherd is fixed reliable.
The outer surface of lateral femoral condyle prosthesis is equipped with one group of hole, and one group of hole is one group of micro- hole, for storing human body fluid, lubricates stock
The contact surface of bone condyle prosthese and potsherd reduces the two friction, reduces abrasion loss.Between having centainly between adjacent ceramic piece
Gap, can be used for storing human body fluid in gap, the contact surface of lubrication potsherd and shin bone liner, both reduce friction.The two knot
The abrasion loss of structure collective effect, potsherd and lateral femoral condyle prosthesis is very small.
Above or on lateral femoral condyle prosthesis several potsherds are distributed in shin bone liner in the knee-joint prosthesis, by metal and high score
Fretting wear between sub- polymer material is changed into the fretting wear of ceramics with high molecular polymer, reduces conventional femoral condyle prosthese
With shin bone pad wear amount, it is precipitated to prevent metal ion caused by metal and macromolecule friction；Potsherd dispersed placement
Keep potsherd not easily broken, overcomes the frangible performance of potsherd, mitigate kneed quality, keep patient motion lighter and handier.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, if use the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or it is not improved will
Conception and technical scheme of the invention directly apply to other occasions, within the scope of the present invention.
Claims (10)
1. a kind of knee-joint prosthesis, including lateral femoral condyle prosthesis, liner, tibial plateau support, the liner is located in tibial plateau support,
It is characterized by: the lateral femoral condyle prosthesis is equipped with the potsherd for reducing lateral femoral condyle prosthesis and pad wear, the ceramics
Piece is one group of potsherd of dispersed placement, the potsherd and lateral femoral condyle prosthesis by being welded to connect, the convex outward of potsherd
It is secondary that composition friction is contacted with the upper surface of liner.
2. knee-joint prosthesis as described in claim 1, it is characterised in that: be equipped with intermediate, the centre between the potsherd
Body is high molecular polymer.
3. knee-joint prosthesis as described in claim 1, it is characterised in that: the convex outward of the potsherd protrudes from condyle of femur vacation
The outer surface of body or with the outer surface of lateral femoral condyle prosthesis in same curved surface.
4. knee-joint prosthesis as described in claim 1, it is characterised in that: the convex outward curvature and condyle of femur of the potsherd are false
The outer surface curvature of body is consistent.
5. knee-joint prosthesis as described in claim 1, it is characterised in that: the lateral femoral condyle prosthesis has two condyle outer surfaces, two condyles
The potsherd of dispersed placement is equipped on outer surface.
6. knee-joint prosthesis as described in claim 1, it is characterised in that: the shape of the potsherd is cylinder and/or prism.
7. knee-joint prosthesis as described in claim 1, it is characterised in that: the liner be high molecular polymer or its compound or
Surface-modified, lateral femoral condyle prosthesis is titanium and its alloy or tantalum and its alloy or medical stainless steel or cochrome, potsherd are
Bioceramic.
8. knee-joint prosthesis as described in claim 1, it is characterised in that: the lateral femoral condyle prosthesis inner surface and tibial plateau
The part that support lower external face is contacted with host bone, which is equipped with, to be suitable for tissue growth, is convenient for biology connection, enhancing clinical
One group of hole of long-term connection effect.
9. knee-joint prosthesis as described in claim 1, it is characterised in that: the upper surface of the liner is equipped with for storing body
One group of pit of liquid.
10. knee-joint prosthesis as claimed in claim 2, it is characterised in that: the periphery of the potsherd and intermediate connected component
Face is equipped with groove or protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154442.4A CN109662812A (en) | 2019-03-01 | 2019-03-01 | A kind of knee-joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910154442.4A CN109662812A (en) | 2019-03-01 | 2019-03-01 | A kind of knee-joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109662812A true CN109662812A (en) | 2019-04-23 |
Family
ID=66152220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910154442.4A Pending CN109662812A (en) | 2019-03-01 | 2019-03-01 | A kind of knee-joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109662812A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111084677A (en) * | 2019-11-29 | 2020-05-01 | 北京力达康科技有限公司 | Knee joint prosthesis |
| WO2021135927A1 (en) * | 2019-12-30 | 2021-07-08 | 骄英医疗器械(上海)有限公司 | Connection structure of porous surface structure and substrate, preparation method for connection structure, and prosthesis |
| CN113209381A (en) * | 2021-04-23 | 2021-08-06 | 江苏毅松医疗科技有限公司 | Artificial knee joint cuboid condyle and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5549700A (en) * | 1993-09-07 | 1996-08-27 | Ortho Development Corporation | Segmented prosthetic articulation |
| CN1596091A (en) * | 2001-12-04 | 2005-03-16 | 迪斯酋有限公司 | Implants for load bearing applications |
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| WO2021135927A1 (en) * | 2019-12-30 | 2021-07-08 | 骄英医疗器械(上海)有限公司 | Connection structure of porous surface structure and substrate, preparation method for connection structure, and prosthesis |
| CN113209381A (en) * | 2021-04-23 | 2021-08-06 | 江苏毅松医疗科技有限公司 | Artificial knee joint cuboid condyle and preparation method thereof |
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