CN104825254B - Prosthetic component - Google Patents
Prosthetic component Download PDFInfo
- Publication number
- CN104825254B CN104825254B CN201510236816.9A CN201510236816A CN104825254B CN 104825254 B CN104825254 B CN 104825254B CN 201510236816 A CN201510236816 A CN 201510236816A CN 104825254 B CN104825254 B CN 104825254B
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- China
- Prior art keywords
- pointed structures
- pad
- prosthetic component
- hook
- metallic matrix
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- 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.)
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- 239000011159 matrix material Substances 0.000 claims abstract description 48
- 229920000573 polyethylene Polymers 0.000 claims abstract description 11
- 239000004698 Polyethylene Substances 0.000 claims abstract description 10
- -1 polyethylene Polymers 0.000 claims abstract description 10
- 238000007788 roughening Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 37
- 229910052751 metal Inorganic materials 0.000 claims description 37
- 238000009826 distribution Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 210000004417 patella Anatomy 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 241001421185 Anomis Species 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 206010003246 arthritis Diseases 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000013150 knee replacement Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The invention provides a kind of prosthetic component, the pad (20) coordinated including metallic matrix (10) and with metallic matrix (10), the material for padding (20) is ultra high molecular polyethylene, metallic matrix (10) has the matching surface towards pad (20), matching surface forms multiple pointed structures (11) after laser roughening is handled, and pad (20) is linked together by hot pressing and metallic matrix (10) and makes being at least partially into for each pointed structures (11) interior to pad (20).Technical scheme can efficiently solve the problem of easily failure is connected between metallic matrix and pad in prosthetic component of 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 is a kind of effective and ripe therapeutic modality for treating various gonitis,
Its operation acceptance rate in recent years improves constantly, and it mainly replaces disrupted bone in knee joint using bioartificial materials
And cartilage.
In the prior art, artificial knee joint prosthesis is made up of following three parts：1st, the fluid origin condyle of femur of metal material
Prosthese；2nd, tibial component, including the fluid origin tibial prosthesis chassis of metal material and using ultra high molecular polyethylene as main material
Articular surface pad；3rd, patellar prosthesis, including ultra high molecular polyethylene material Patellar joint pad and/or metal kneecap support
Disk.Wherein, lateral femoral condyle prosthesis matches completely with the form on joint spacer surface, thus produces and stretches Qu Yundong.
In above-mentioned articular prosthesis, both the metal prostheses chassis of tibial component and ultra high molecular polyethylene articular surface pad
Between, and the metal kneecap pallet of patellar prosthesis and ultra high molecular polyethylene Patellar joint pad generally pass through machine between the two
Tool method is connected, such as clamping lock pattern.Easily there is phenomena such as clamping lock abjection, clamping lock fracture in this mechanical connection manner, so as to
Cause Joint failure.
The content of the invention
It is a primary object of the present invention to provide a kind of prosthetic component, to solve the gold in prosthetic component of the prior art
Belong to the problem of easily failure is connected between matrix and pad.
To achieve these goals, the invention provides a kind of prosthetic component, including metallic matrix and and metallic matrix
The pad of cooperation, the material of pad is ultra high molecular polyethylene, it is characterised in that metallic matrix has the cooperation table towards pad
Face, matching surface form multiple pointed structures after laser roughening is handled, and pad is linked together by hot pressing and metallic matrix
And make being at least partially into pad of each pointed structures.
Further, multiple pointed structures include multiple straight pointed structures and/or multiple hook-type pointed structures.
Further, multiple pointed structures include multiple straight pointed structures and multiple hook-type pointed structures, multiple straights
Pointed structures are located in the range of predetermined circle, and multiple hook-type pointed structures are located at the outer circumferential of multiple straight pointed structures.
Further, the hook portion of each hook-type pointed structures faces away from the direction setting of multiple straight pointed structures.
Further, the density of multiple hook-type pointed structures is less than the density of multiple straight pointed structures.
Further, the length of straight pointed structures is more than the length of hook-type pointed structures.
Further, the length of straight pointed structures is twice of length of hook-type pointed structures.
Further, prosthetic component is patellar prosthesis.
Further, metallic matrix is metal support, the Patellar joint pad for padding to be connected with metal support, metal support direction
The surface of Patellar joint pad is matching surface.
Further, metal support includes metal support main body, and Patellar joint pad is used for towards having in the side wall of metal support
Accommodate metal support main body pockets, metal support main body towards the surface of pockets be matching surface.
Apply the technical scheme of the present invention, formed in the matching surface of metallic matrix after laser roughening is handled multiple pointed
Structure.Before prosthetic replacement is carried out, first pad is linked together by hot pressing and metallic matrix, now, metallic matrix is matched somebody with somebody
The each pointed structures closed on surface are at least partially into pad, and metallic matrix and pad are connected so as to play
Effect, and multiple pointed structures can effectively prevent fine motion of the pad relative to metallic matrix, make fixation between the two
Connection is more stable, avoids Joint failure.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of the embodiment of the prosthetic component according to the present invention；
Fig. 2 shows the schematic front view of Fig. 1 prosthetic component；
Fig. 3 shows the schematic top plan view of Fig. 1 prosthetic component；
Fig. 4 shows the A-A of Fig. 3 prosthetic component to schematic cross-sectional view；
Fig. 5 shows the structural representation of the metallic matrix of Fig. 1 prosthetic component；
Fig. 6 shows the structural representation of another angle of Fig. 5 metallic matrix；
Fig. 7 shows the schematic front view of Fig. 5 metallic matrix；
Fig. 8 shows the schematic top plan view of Fig. 5 metallic matrix；And
Fig. 9 shows the B-B direction schematic cross-sectional view of Fig. 8 metallic matrix.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
10th, metallic matrix；11st, pointed structures；111st, straight pointed structures；112nd, hook-type pointed structures；12nd, metal support master
Body；20th, pad；21st, pockets.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and 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 prosthetic component in the present embodiment includes metallic matrix 10 and coordinated with metallic matrix 10
Pad 20, the material for padding 20 is ultra high molecular polyethylene.Metallic matrix 10 has the matching surface towards pad 20, coordinates
Surface forms multiple pointed structures 11 after laser roughening is handled, and pad 20 is linked together simultaneously by hot pressing and metallic matrix 10
Each pointed structures 11 are made to enter in pad 20.
Using the prosthetic component of the present embodiment, formed in the matching surface of metallic matrix 10 after laser roughening is handled multiple
Pointed structures 11.Before prosthetic replacement is carried out, first pad 20 is linked together by hot pressing and metallic matrix 10, now, gold
Belong to each pointed structures 11 on the matching surface of matrix 10 to be at least partially into pad 20, so as to play to metallic matrix
10 and the being connected effect of pad 20, and multiple pointed structures 11 can effectively prevent from padding 20 relative to metallic matrix
10 fine motion, make between the two be fixedly connected more stable, avoid Joint failure.
In the present embodiment, pad 20 is linked together by hot pressing and metallic matrix 10.Specifically, by metallic matrix 10
In the molding die of bottom, the matching surface with multiple pointed structures 11 of metallic matrix 10 upward, and is molded in bottom
Filling ultra-high molecular polyethylene powder in mould, top molding die and bottom molding die matched moulds, pressurization heating is laggard
Row pressure-maintaining and heat-preservation, so that ultrahigh molecular weight polyethylene powder forms pad 20, and multiple pointed structures 11 are made to enter to pad
In 20, so as to play the effect of being connected to metallic matrix 10 and pad 20, while can effectively it prevent due to supra polymer
Prosthetic component Joint failure caused by material modification, adhesion are lost after polythene material aging.
As shown in Fig. 4 to Fig. 9, in the prosthetic component of the present embodiment, it is pointed that multiple pointed structures 11 include multiple straights
Structure 111 and multiple hook-type pointed structures 112.Above-mentioned multiple straight pointed structures 111 can be entered in pad 20, by metal
Matrix 10 and pad 20 are fixed together.Above-mentioned multiple hook-type pointed structures 112 have hook portion, and the hook portion can hook lining
Pad 20, so as to play the pulling function to pad 20, prosthetic loosening is effectively prevented, meanwhile, hook-type pointed structures 112 can also
Effectively prevent the 20 caused loosenings under by the torque rotated of metallic matrix 10 or pad.It should be noted that this implementation
Pointed structures 11 in example include straight pointed structures 111 and hook-type pointed structures 112, but the not limited to this of pointed structures 11,
In other embodiment not shown in figure, pointed structures 11 can also only include straight pointed structures 111 or only include
Hook-type pointed structures 112, such setting equally to metallic matrix 10 and can pad 20 and are fixedly connected with effect.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, multiple straight pointed structures 111 are located at
In the range of predetermined circle, multiple hook-type pointed structures 112 are located at the outer circumferential of multiple straight pointed structures 111.In this implementation
Example in, metallic matrix 10 towards pad 20 matching surface on be provided with predetermined circle scope, multiple straight pointed structures 111
In the range of above-mentioned predetermined circle, good cutting experiment ensure that.It is pointed that multiple hook-type pointed structures 112 are located at multiple straights
The outer circumferential of structure 111, make its pulling function power to pad 20 more uniform, prevent that the effect of prosthetic loosening is more preferable.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, multiple straight pointed structures 111 are in gold
The predetermined circle interior edge of category matrix 10 is provided at circumferentially spaced to form straight pointed structures group, straight pointed structures group be it is multiple,
Spaced radial of multiple straight pointed structures groups along metallic matrix 10 is set.Multiple hook-type pointed structures 112 are in multiple straights point
To form hook-type pointed structures group, hook-type pointed structures group is multiple, multiple hooks for the circumferentially spaced setting in outside of shape structure 111
Spaced radial of the shape pointed structures group along metallic matrix 10 is set.Above-mentioned straight pointed structures 111 and hook-type pointed structures 112
Arrangement mode is simply neat, is more uniformly stressed pad 20, and easy to process.It should be noted that straight pointed structures
111 and the arrangement mode not limited to this of hook-type pointed structures 112, in the other embodiment not shown in figure, or
Other can play the arrangement mode of fixation.
As shown in Fig. 4 to Fig. 9, in the prosthetic component of the present embodiment, the hook portion direction back of the body of each hook-type pointed structures 112
Direction from multiple straight pointed structures 111 is set.Said structure makes pulling function power of the hook-type pointed structures 112 to pad 20
Direction radially, good fixing effect.Certainly, the hook portion of hook-type pointed structures 112 towards not limited to this, not shown in figure
Other embodiment in, other directions can also be selected according to specific needs.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, multiple hook-type pointed structures 112 it is close
Density of the degree less than multiple straight pointed structures 111.Said structure makes to prevent that the effect of prosthetic loosening is more preferable.
As shown in Fig. 4, Fig. 5, Fig. 7 to Fig. 9, in the prosthetic component of the present embodiment, the length of straight pointed structures 111 is big
In the length of hook-type pointed structures 112.The length of straight pointed structures 111 is more than the length of hook-type pointed structures 112, Ke Yibao
The cuttage depth of straight pointed structures 111 is demonstrate,proved, and increases pulling function power of the hook-type pointed structures 112 to pad 20, enhancing
Anti-loosening effect.In this embodiment, it is preferred that the length of straight pointed structures 111 is the length of hook-type pointed structures 112
Twice.In other embodiment not shown in figure, the length of straight pointed structures 111 and the length of hook-type pointed structures 112
Degree can also be selected according to specific needs.
In addition, pointed structures 11 are formed by laser roughening processing in the present embodiment.Laser roughening technology can essence
Really the pattern and roughness of metal surface are processed in control, and it uses the Gao Zhongying laser pulse of special acousto-optic modulation through optical system
System is focused on, and uniform scanning is carried out to metal surface, the stable micro- hole of consolidation of spacing and boss is formed in metal surface, so as to complete
The uniform texturing of metal surface.Two-dimentional controllable random texturing distribution technique of the equipment with uniqueness, achievable texturing point rhombus,
Rectangle and random distribution texturing, substantially improve the uniformity of texturing.In addition, laser roughening technology can be in the same of texturing
When, the metal material in laser action area is obtained extraordinary hardness, increase 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, lining
Pad 20 is that the Patellar joint that be connected with metal support pads, metal support towards the surface that Patellar joint pads be matching surface.Metal
Support includes metal support main body 12, and Patellar joint pad is towards the appearance having in the side wall of metal support for accommodating metal support main body 12
Receive groove 21, metal support main body 12 towards the surface of pockets 21 be matching surface.Metal support main body 12 is embedded into kneecap
It in joint spacer, can prevent metal support main body 12 from being hit with other implants or bone, and can effectively prevent
Patellar joint pad fracture.
It should be noted that prosthetic component is not limited to patellar prosthesis, and in the other embodiment not shown in figure, prosthese
Part can also be lateral femoral condyle prosthesis, tibial plateau prosthese etc..For example, metal tibial prosthese chassis in tibial plateau prosthese and
Connection between the articular surface pad of ultra high molecular polyethylene can also use the attachment structure in the application, so as to ensure table
Face pads the good combination with metal tibial prosthese chassis.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of prosthetic component, including metallic matrix (10) and the pad (20) with the metallic matrix (10) cooperation, described
The material for padding (20) is ultra high molecular polyethylene, it is characterised in that the metallic matrix (10) has towards the pad
(20) matching surface, the matching surface form multiple pointed structures (11), the pad (20) after laser roughening is handled
Linked together by hot pressing and the metallic matrix (10) and make each pointed structures (11) be at least partially into
In the pad (20), the multiple pointed structures (11) include multiple straight pointed structures (111) and/or multiple hook-types are pointed
Structure (112).
2. prosthetic component according to claim 1, it is characterised in that the multiple pointed structures (11) include the multiple
Straight pointed structures (111) and the multiple hook-type pointed structures (112), the multiple straight pointed structures (111) are positioned at pre-
Determine in circumference range, the multiple hook-type pointed structures (112) are located at the week of the multiple straight pointed structures (111) outwards
Side.
3. prosthetic component according to claim 2, it is characterised in that the hook portion of each hook-type pointed structures (112)
The direction for facing away from the multiple straight pointed structures (111) is set.
4. prosthetic component according to claim 1, it is characterised in that the distribution of the multiple hook-type pointed structures (112)
Density is less than the distribution density of the multiple straight pointed structures (111).
5. the prosthetic component according to any one of claim 2 to 4, it is characterised in that the straight pointed structures (111)
Length be more than the hook-type pointed structures (112) length.
6. prosthetic component according to claim 5, it is characterised in that the length of the straight pointed structures (111) is institute
State the length of hook-type pointed structures (112) twice.
7. prosthetic component according to claim 1, it is characterised in that the prosthetic component is patellar prosthesis.
8. prosthetic component according to claim 7, it is characterised in that the metallic matrix (10) is metal support, the lining
Pad (20) is the Patellar joint pad being connected with the metal support, and the metal support is towards the surface that the Patellar joint pads
The matching surface.
9. prosthetic component according to claim 8, it is characterised in that the metal support includes metal support main body (12), institute
Patellar joint pad is stated towards having the pockets that are used for accommodating the metal support main body (12) in the side wall of the metal support
(21), the metal support main body (12) towards the surface of the pockets (21) be the matching surface.
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 CN104825254A (en) | 2015-08-12 |
| CN104825254B true CN104825254B (en) | 2017-12-19 |
Family
ID=53803733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510236816.9A Active CN104825254B (en) | 2015-05-11 | 2015-05-11 | Prosthetic component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104825254B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (7)
| 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 |
| US5019104A (en) * | 1990-01-16 | 1991-05-28 | Dow Corning Wright Corporation | Patellar prosthesis and method of making the same |
| GB9420071D0 (en) * | 1994-10-05 | 1994-11-16 | Howmedica | Metal backing for inclusion in the manufacture of a prosthetic component |
| US6974482B2 (en) * | 2002-11-22 | 2005-12-13 | Zimmer Austin, Inc. | Implantable orthopedic prosthesis with textured polymeric surfaces |
| GB2513372B (en) * | 2013-04-25 | 2015-10-14 | 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 |
-
2015
- 2015-05-11 CN CN201510236816.9A patent/CN104825254B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN104825254A (en) | 2015-08-12 |
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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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