CN104825254A - Prosthesis part - Google Patents
Prosthesis part Download PDFInfo
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- CN104825254A CN104825254A CN201510236816.9A CN201510236816A CN104825254A CN 104825254 A CN104825254 A CN 104825254A CN 201510236816 A CN201510236816 A CN 201510236816A CN 104825254 A CN104825254 A CN 104825254A
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- pointed structures
- liner
- prosthetic component
- hook
- straight shape
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Abstract
The invention provides a prosthesis part which comprises a metal substrate (10) and a liner (20) matched with the metal substrate (10), wherein the liner (20) is made from ultra-high molecular weight polyethylene; the metal substrate (10) is provided with a matched surface facing to the liner (20); the matched surface is subjected to laser texturing to form a plurality of sharp-shaped structures (11); the liner (20) is connected with the metal substrate (10) together through hot pressing to enable at least part of each sharp-shaped structure (11) to enter the liner (20). The technical scheme of the prosthesis part can effectively solve the problem of high possibility of connection invalidity between a metal substrate and a liner in a prosthesis part in the prior art.
Description
Technical field
The present invention relates to technical field of medical instruments, in particular to a kind of prosthetic component.
Background technology
At present, total knee replacement be the various gonitis for the treatment of a kind of effectively and the therapeutic modality of maturation, its operation acceptance rate in recent years improves constantly, and it mainly utilizes bioartificial materials to replace disrupted bone and cartilage in knee joint.
In the prior art, artificial knee joint prosthesis is made up of following three parts: 1, the fluid origin lateral femoral condyle prosthesis of metal material; 2, tibial component, comprises the fluid origin tibial prosthesis chassis of metal material and take ultra high molecular polyethylene as the articular surface liner of main material; 3, patellar prosthesis, comprises ultra high molecular polyethylene material Patellar joint liner and/or metal patella pallet.Wherein, lateral femoral condyle prosthesis mates completely with the form on joint spacer surface, produces thus and stretches Qu Yundong.
In above-mentioned articular prosthesis, the metal prostheses chassis of tibial component and ultra high molecular polyethylene articular surface liner are between the two, and the metal patella pallet of patellar prosthesis is connected by mechanical means, as kayser pattern with ultra high molecular polyethylene Patellar joint liner is usual between the two.Easily there is the phenomenons such as kayser is deviate from, kayser fracture in this mechanical connection manner, thus causes Joint failure.
Summary of the invention
Main purpose of the present invention is to provide a kind of prosthetic component, to solve metallic matrix in prosthetic component of the prior art and to be connected the problem easily lost efficacy between liner.
To achieve these goals, the invention provides a kind of prosthetic component, the liner comprising metallic matrix and coordinate with metallic matrix, the material of liner is ultra high molecular polyethylene, it is characterized in that, metallic matrix has the matching surface towards liner, and matching surface forms multiple pointed structures after laser roughening process, liner linked together by hot pressing and metallic matrix and make each pointed structures enter in liner at least partly.
Further, multiple pointed structures comprises multiple straight shape pointed structures and/or multiple hook-type pointed structures.
Further, multiple pointed structures comprises multiple straight shape pointed structures and multiple hook-type pointed structures, and multiple straight shape pointed structures is positioned at predetermined circle scope, and multiple hook-type pointed structures is positioned at the outer circumferential of multiple straight shape pointed structures.
Further, the hook portion of each hook-type pointed structures is arranged towards the direction deviating from multiple straight shape pointed structures.
Further, the density of multiple hook-type pointed structures is less than the density of multiple straight shape pointed structures.
Further, the length of straight shape pointed structures is greater than the length of hook-type pointed structures.
Further, the length of straight shape pointed structures is the twice of the length of hook-type pointed structures.
Further, prosthetic component is patellar prosthesis.
Further, metallic matrix is metal support, and liner is the Patellar joint liner be connected with metal support, and metal support is matching surface towards the surface of Patellar joint liner.
Further, metal support comprises metal support main body, and Patellar joint liner has the pockets for holding metal support main body on the sidewall of metal support, and metal support main body is matching surface towards the surface of pockets.
Apply technical scheme of the present invention, after laser roughening process, form multiple pointed structures at the matching surface of metallic matrix.Before carrying out prosthetic replacement, first liner is linked together by hot pressing and metallic matrix, now, each pointed structures on the matching surface of metallic matrix enters in liner at least partly, thus play effect is connected and fixed to metallic matrix and liner, and multiple pointed structures can prevent liner relative to the fine motion of metallic matrix effectively, make between the two be fixedly connected with more stable, avoid Joint failure.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment according to prosthetic component of the present invention;
Fig. 2 shows the schematic front view of the prosthetic component of Fig. 1;
Fig. 3 shows the schematic top plan view of the prosthetic component of Fig. 1;
Fig. 4 shows the A-A of the prosthetic component of Fig. 3 to cross-sectional schematic;
Fig. 5 shows the structural representation of the metallic matrix of the prosthetic component of Fig. 1;
Fig. 6 shows the structural representation of another angle of the metallic matrix of Fig. 5;
Fig. 7 shows the schematic front view of the metallic matrix of Fig. 5;
Fig. 8 shows the schematic top plan view of the metallic matrix of Fig. 5; And
Fig. 9 shows the B-B of the metallic matrix of Fig. 8 to cross-sectional schematic.
Wherein, above-mentioned accompanying drawing comprises the following drawings labelling:
10, metallic matrix; 11, pointed structures; 111, straight shape pointed structures; 112, hook-type pointed structures; 12, metal support main body; 20, liner; 21, pockets.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figures 1 to 9, the prosthetic component in the present embodiment is patellar prosthesis.
As shown in Figures 1 to 9, the liner 20 that the prosthetic component in the present embodiment comprises metallic matrix 10 and coordinates with metallic matrix 10, the material of liner 20 is ultra high molecular polyethylene.Metallic matrix 10 has the matching surface towards liner 20, and matching surface forms multiple pointed structures 11 after laser roughening process, and liner 20 is linked together by hot pressing and metallic matrix 10 and each pointed structures 11 is entered in liner 20.
The prosthetic component of application the present embodiment, forms multiple pointed structures 11 at the matching surface of metallic matrix 10 after laser roughening process.Before carrying out prosthetic replacement, first liner 20 is linked together by hot pressing and metallic matrix 10, now, each pointed structures 11 on the matching surface of metallic matrix 10 enters in liner 20 at least partly, thus play effect is connected and fixed to metallic matrix 10 and liner 20, and multiple pointed structures 11 can prevent liner 20 relative to the fine motion of metallic matrix 10 effectively, make between the two be fixedly connected with more stable, avoid Joint failure.
In the present embodiment, liner 20 is linked together by hot pressing and metallic matrix 10.Particularly, metallic matrix 10 is contained in lower die compression mould, the matching surface with multiple pointed structures 11 of metallic matrix 10 upward, and in lower die compression mould filling ultra-high molecular polyethylene powder, by upper mould compression mould and lower die compression mould matched moulds, pressurization carries out pressure-maintaining and heat-preservation after heating up, liner 20 is formed to make ultrahigh molecular weight polyethylene powder, and make multiple pointed structures 11 enter in liner 20, thus play effect is connected and fixed to metallic matrix 10 and liner 20, can effectively prevent due to material modification after ultra high molecular polyethylene material aging simultaneously, the prosthetic component Joint failure that adhesion is lost and caused.
As shown in Fig. 4 to Fig. 9, in the prosthetic component of the present embodiment, multiple pointed structures 11 comprises multiple straight shape pointed structures 111 and multiple hook-type pointed structures 112.Above-mentioned multiple straight shape pointed structures 111 can enter in liner 20, metallic matrix 10 and liner 20 is fixed together.Above-mentioned multiple hook-type pointed structures 112 has hook portion, this hook portion can hook liner 20, thus the pulling function played liner 20, effectively prevent prosthetic loosening, meanwhile, what hook-type pointed structures 112 can also prevent metallic matrix 10 or liner 20 from producing under the moment of being rotated effectively loosens.It should be noted that, pointed structures 11 in the present embodiment comprises straight shape pointed structures 111 and hook-type pointed structures 112, but pointed structures 11 is not limited thereto, in other embodiments unshowned in the drawings, pointed structures 11 also can only include straight shape pointed structures 111 or only include hook-type pointed structures 112, and such setting can be fixedly connected with effect to metallic matrix 10 and liner 20 equally.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, multiple straight shape pointed structures 111 is positioned at predetermined circle scope, and multiple hook-type pointed structures 112 is positioned at the outer circumferential of multiple straight shape pointed structures 111.In the present embodiment, metallic matrix 10 is provided with predetermined circle scope on the matching surface of liner 20, and multiple straight shape pointed structures 111 is positioned at above-mentioned predetermined circle scope, ensure that good cutting experiment.Multiple hook-type pointed structures 112 is positioned at the outer circumferential of multiple straight shape pointed structures 111, makes it more even to the pulling function power of liner 20, prevents the better effects if of prosthetic loosening.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, multiple straight shape pointed structures 111 in the predetermined circle of metallic matrix 10 circumferentially interval arrange to form straight shape pointed structures group, straight shape pointed structures group is multiple, and multiple straight shape pointed structures group is arranged along the spaced radial of metallic matrix 10.Circumferentially interval setting is to form hook-type pointed structures group in the outside of multiple straight shape pointed structures 111 for multiple hook-type pointed structures 112, and hook-type pointed structures group is multiple, and multiple hook-type pointed structures group is arranged along the spaced radial of metallic matrix 10.The arrangement mode of above-mentioned straight shape pointed structures 111 and hook-type pointed structures 112 is simply neat, makes liner 20 stressed more even, and is easy to processing.It should be noted that, the arrangement mode of straight shape pointed structures 111 and hook-type pointed structures 112 is not limited thereto, and in other embodiments unshowned in the drawings, also can play the arrangement mode of fixation for other.
As shown in Fig. 4 to Fig. 9, in the prosthetic component of the present embodiment, the hook portion of each hook-type pointed structures 112 is arranged towards the direction deviating from multiple straight shape pointed structures 111.Said structure makes the pulling function force direction of hook-type pointed structures 112 pairs of liners 20 all radially, good fixing effect.Certainly, the hook portion of hook-type pointed structures 112 towards being not limited thereto, in other embodiments unshowned in the drawings, also can select according to specific needs other towards.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, the density of multiple hook-type pointed structures 112 is less than the density of multiple straight shape pointed structures 111.Said structure makes the better effects if preventing prosthetic loosening.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, the length of straight shape pointed structures 111 is greater than the length of hook-type pointed structures 112.The length of straight shape pointed structures 111 is greater than the length of hook-type pointed structures 112, can ensure the cuttage degree of depth of straight shape pointed structures 111, and increase the pulling function power of hook-type pointed structures 112 pairs of liners 20, strengthen anti-loosening effect.In the present embodiment, preferably, the length of straight shape pointed structures 111 is the twice of the length of hook-type pointed structures 112.In other embodiments unshowned in the drawings, the length of straight shape pointed structures 111 and the length of hook-type pointed structures 112 also can be selected according to specific needs.
In addition, in the present embodiment, pointed structures 11 is formed by laser roughening process.Laser roughening technology accurately can control pattern and the roughness of processed metal surface, it adopts the Gao Zhongying laser pulse of special acousto-optic modulation through optics into focus, Uniform Scanning is carried out to metal surface, form the stable micro-hole of consolidation of spacing and boss in metal surface, thus complete the even texturing of metal surface.Equipment has unique controlled random texturing distribution technique of two dimension, can realize texturing point rhombus, rectangle and random distribution texturing, substantially improve the uniformity of texturing.In addition, laser roughening technology while texturing, can make the metal material in laser action district obtain extraordinary hardness, increases the service life.
As shown in Figures 1 to 4, in the prosthetic component of the present embodiment, the metallic matrix 10 of patellar prosthesis is metal support, and liner 20 is the Patellar joint liner be connected with metal support, and metal support is matching surface towards the surface of Patellar joint liner.Metal support comprises metal support main body 12, and Patellar joint liner has the pockets 21 for holding metal support main body 12 on the sidewall of metal support, and metal support main body 12 is matching surface towards the surface of pockets 21.Metal support main body 12 is embedded in Patellar joint liner, can prevents metal support main body 12 from clashing into other implants or skeleton, and can effectively prevent Patellar joint liner from rupturing.
It should be noted that, prosthetic component is not limited to patellar prosthesis, and in other embodiments unshowned in the drawings, prosthetic component can also be lateral femoral condyle prosthesis, tibial plateau prosthese etc.Such as, the metal tibial prosthese chassis in tibial plateau prosthese and the connection between the articular surface liner of ultra high molecular polyethylene also can adopt the syndeton in the application, thus ensure the good combination on cushioning surface and metal tibial prosthese chassis.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a prosthetic component, the liner (20) comprising metallic matrix (10) and coordinate with described metallic matrix (10), the material of described liner (20) is ultra high molecular polyethylene, it is characterized in that, described metallic matrix (10) has towards the matching surface of described liner (20), described matching surface forms multiple pointed structures (11) after laser roughening process, described liner (20) is linked together by hot pressing and described metallic matrix (10) and makes the entering at least partly in described liner (20) of each described pointed structures (11).
2. prosthetic component according to claim 1, is characterized in that, described multiple pointed structures (11) comprises multiple straight shape pointed structures (111) and/or multiple hook-type pointed structures (112).
3. prosthetic component according to claim 2, it is characterized in that, described multiple pointed structures (11) comprises described multiple straight shape pointed structures (111) and described multiple hook-type pointed structures (112), described multiple straight shape pointed structures (111) is positioned at predetermined circle scope, and described multiple hook-type pointed structures (112) is positioned at the outer circumferential of described multiple straight shape pointed structures (111).
4. prosthetic component according to claim 3, is characterized in that, the hook portion of each described hook-type pointed structures (112) is arranged towards the direction deviating from described multiple straight shape pointed structures (111).
5. prosthetic component according to claim 2, is characterized in that, the distribution density of described multiple hook-type pointed structures (112) is less than the distribution density of described multiple straight shape pointed structures (111).
6. the prosthetic component according to any one of claim 3 to 5, is characterized in that, the length of described straight shape pointed structures (111) is greater than the length of described hook-type pointed structures (112).
7. prosthetic component according to claim 6, is characterized in that, the length of described straight shape pointed structures (111) is the twice of the length of described hook-type pointed structures (112).
8. prosthetic component according to claim 1, is characterized in that, described prosthetic component is patellar prosthesis.
9. prosthetic component according to claim 8, it is characterized in that, described metallic matrix (10) is metal support, described liner (20) is the Patellar joint liner be connected with described metal support, and described metal support is described matching surface towards the surface of described Patellar joint liner.
10. prosthetic component according to claim 9, it is characterized in that, described metal support comprises metal support main body (12), described Patellar joint liner has the pockets (21) for holding described metal support main body (12) on the sidewall of described metal support, and described metal support main body (12) is described matching surface towards the surface of described pockets (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236816.9A CN104825254B (en) | 2015-05-11 | 2015-05-11 | Prosthetic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236816.9A CN104825254B (en) | 2015-05-11 | 2015-05-11 | Prosthetic component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104825254A true CN104825254A (en) | 2015-08-12 |
| CN104825254B CN104825254B (en) | 2017-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510236816.9A Active CN104825254B (en) | 2015-05-11 | 2015-05-11 | Prosthetic component |
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| CN (1) | CN104825254B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997445A (en) * | 1989-12-08 | 1991-03-05 | Zimmer, Inc. | Metal-backed prosthetic implant with enhanced bonding of polyethylene portion to metal base |
| US5024670A (en) * | 1989-10-02 | 1991-06-18 | Depuy, Division Of Boehringer Mannheim Corporation | Polymeric bearing component |
| EP0438918A1 (en) * | 1990-01-16 | 1991-07-31 | Wright Medical Technology, Inc. | Patellar prosthesis and method of making the same |
| EP0705580A1 (en) * | 1994-10-05 | 1996-04-10 | Howmedica International Inc. | Metal backing for inclusion in the manufacture of a prosthetic component |
| US20040102854A1 (en) * | 2002-11-22 | 2004-05-27 | Mengke Zhu | Implantable orthopedic prosthesis with textured polymeric surfaces |
| GB2513372A (en) * | 2013-04-25 | 2014-10-29 | Derek James Wallace Mcminn | Prosthetic component with crosslinked polymer wear zone and edge protection |
| CN204049935U (en) * | 2014-07-16 | 2014-12-31 | 凯德信诚（北京）技术开发有限公司 | With the acetabular cup of thrust-type fixed structure |
| CN204636621U (en) * | 2015-05-11 | 2015-09-16 | 北京爱康宜诚医疗器材股份有限公司 | Prosthetic component |
-
2015
- 2015-05-11 CN CN201510236816.9A patent/CN104825254B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5024670A (en) * | 1989-10-02 | 1991-06-18 | Depuy, Division Of Boehringer Mannheim Corporation | Polymeric bearing component |
| US4997445A (en) * | 1989-12-08 | 1991-03-05 | Zimmer, Inc. | Metal-backed prosthetic implant with enhanced bonding of polyethylene portion to metal base |
| EP0438918A1 (en) * | 1990-01-16 | 1991-07-31 | Wright Medical Technology, Inc. | Patellar prosthesis and method of making the same |
| EP0705580A1 (en) * | 1994-10-05 | 1996-04-10 | Howmedica International Inc. | Metal backing for inclusion in the manufacture of a prosthetic component |
| US20040102854A1 (en) * | 2002-11-22 | 2004-05-27 | Mengke Zhu | Implantable orthopedic prosthesis with textured polymeric surfaces |
| GB2513372A (en) * | 2013-04-25 | 2014-10-29 | Derek James Wallace Mcminn | Prosthetic component with crosslinked polymer wear zone and edge protection |
| CN204049935U (en) * | 2014-07-16 | 2014-12-31 | 凯德信诚（北京）技术开发有限公司 | With the acetabular cup of thrust-type fixed structure |
| CN204636621U (en) * | 2015-05-11 | 2015-09-16 | 北京爱康宜诚医疗器材股份有限公司 | Prosthetic component |
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| Publication number | Publication date |
|---|---|
| CN104825254B (en) | 2017-12-19 |
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Address after: 102200 Beijing science and Technology Park of Changping District Bai Fu Road 10 Patentee after: Beijing Aikang Yicheng Medical Equipment Co., Ltd. Address before: 102200 Beijing science and Technology Park of Changping District Bai Fu Road 10 Patentee before: Beijing AKEC Medical Co.,Ltd. |
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