CN206560488U - Knee-joint prosthesis - Google Patents
Knee-joint prosthesis Download PDFInfo
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- CN206560488U CN206560488U CN201620849095.9U CN201620849095U CN206560488U CN 206560488 U CN206560488 U CN 206560488U CN 201620849095 U CN201620849095 U CN 201620849095U CN 206560488 U CN206560488 U CN 206560488U
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- Prior art keywords
- knee
- protective coating
- joint prosthesis
- coating
- prosthetic main
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Abstract
The utility model provides a kind of knee-joint prosthesis, including prosthetic main, and borrowed structure also includes protective coating, and protective coating is coated on the outer surface of prosthetic main.Knee-joint prosthesis in the utility model includes prosthetic main and the protective coating being coated in prosthetic main, because protective coating is coated in the outer surface of prosthetic main, so, and protective coating just can wrap material for Ti6Al4The outer surface of the prosthetic main of V alloy, prevents the situation for occurring prosthese aseptic loosening because of Al, V elemental release from occurring, and improves the life-span of prosthese, and prevents the infringement of Al ions and V ion pair human bodies, improves the safety and reliability that prosthese is used.
Description
Technical field
The utility model is related to therapeutic treatment field, in particular to a kind of knee-joint prosthesis.
Background technology
Ti6Al4V alloy is because preferable biocompatibility, corrosion resistance, high intensity, modulus of elasticity and cortex of bone are close etc. excellent
More performance, is widely used in medical domain.But be used to that in human body environment Al, V ion will be discharged for a long time.Al and V ions
There is toxicity, the possibility of carcinogenic and teratogenesis to human body.And Al shuffles Ti surface potentials, in the environment contacted with thrombus liquid
Fibrinous deposition can be caused and thrombus is formed.This reduces the safety and reliability of materials'use.
At present, the material that most of hip joint and some knee joint are used is Ti6Al4V alloy, then in articular surface
Corresponding modification is done, increases its wearability and hardness.It is less demanding to wearability at bone interface, but Al, V elemental release meeting
Cause prosthese aseptic loosening, reduce the prosthese life-span.
Utility model content
Main purpose of the present utility model is to provide a kind of knee-joint prosthesis, to solve borrowed structure of the prior art
Life-span it is relatively low the problem of.
To achieve these goals, the utility model provides a kind of knee-joint prosthesis, including prosthetic main, borrowed structure
Also include protective coating, protective coating is coated on the outer surface of prosthetic main.
Further, protective coating sputtering sedimentation plated film.
Further, protective coating is alloy coat.
Further, protective coating is tantalum titanium magnesium alloy coating.
Further, protective coating is less than its Ti content close to the tantalum content of the painting interval of prosthetic main side.
Further, the tantalum content of painting interval of the protective coating away from prosthetic main side is more than its Ti content.
Further, protective coating includes Ta2O5Diaphragm.
Further, protective coating includes TiO2Diaphragm.
Further, protective coating is coated on the bone interface of knee-joint prosthesis.
Further, knee-joint prosthesis also includes distal femoral component, and protective coating is arranged on the medial surface of distal femoral component.
Further, knee-joint prosthesis also includes tibial tray, and tibial tray includes stage body portion and the rod body part being connected with each other, protected
Shield coating is arranged on the upper surface in stage body portion and the outer peripheral face of rod body part.
Knee-joint prosthesis in the utility model includes prosthetic main and the protective coating being coated in prosthetic main, due to
Protective coating is coated in the outer surface of prosthetic main, so, and protective coating just can wrap material for Ti6Al4The vacation of V alloy
The outer surface of phosphor bodies, prevents the situation for occurring prosthese aseptic loosening because of Al, V elemental release from occurring, improves prosthese
Life-span, and the infringement of Al ions and V ion pair human bodies is prevented, improve the safety and reliability that prosthese is used.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows the structural representation of the embodiment according to knee-joint prosthesis of the present utility model.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, prosthetic main；20th, distal femoral component；30th, tibial tray；31st, stage body portion；32nd, rod body part；40th, support member.
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 utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of knee-joint prosthesis is present embodiments provided, Fig. 1 is refer to, the knee-joint prosthesis includes prosthetic main 10, false
Body structure also includes protective coating, and protective coating is coated on the outer surface of prosthetic main 10.
Knee-joint prosthesis in the utility model includes prosthetic main 10 and the protective coating being coated in prosthetic main 10,
Because protective coating is coated in the outer surface of prosthetic main 10, so, protective coating just can wrap material for Ti6Al4V is closed
The outer surface of the prosthetic main 10 of gold, prevents the situation for occurring prosthese aseptic loosening because of Al, V elemental release from occurring, improves
The life-span of prosthese, and the infringement of Al ions and V ion pair human bodies is prevented, improve the safety and reliability that prosthese is used.
For the ease of forming the protective coating, this programme is by the way of sputtering, i.e. protective coating sputtering sedimentation plated film.
Specifically, protective coating is alloy coat.
Further, protective coating is tantalum titanium magnesium alloy coating.Both metals of tantalum, titanium are not injured to human body, are had
Higher security.
In the present embodiment, protective coating is less than its Ti content close to the tantalum content of the painting interval of the side of prosthetic main 10.
It is less than Ti contents by making the Ta contents in the painting interval close to the side of prosthetic main 10, makes to press close to Ti6Al4At V base materials, Ti's
Content is high, can make the line of demarcation obfuscation of coating and matrix, can also strengthen the adhesiveness of coating, extends the articular prosthesis longevity
Life.
In the present embodiment, the tantalum content of painting interval of the protective coating away from the side of prosthetic main 10 is more than its Ti content.
Outside alloy coat, Ta content is high, and Ta after Coatings in Vacuum diffusion can be made to be sufficiently mixed in coating, strengthen solution strengthening
Effect, improves strength of coating, extends the articular prosthesis life-span.
In the present embodiment, protective coating includes Ta2O5Diaphragm.
In the present embodiment, protective coating includes TiO2 diaphragms.
Ta metals can be chemically reacted with Ti metals with oxygen, and Ta is generated respectively2O5With TiO2Sull,
Corrosion resistance is strong, and the risk by human body fluid corrosion failure is low.
The alloy coat also includes magnesium metal, and the modulus of elasticity of magnesium metal is 40Gpa, the modulus of elasticity (10- with human body bone
It is 30Gpa) close, it is possible to decrease stress-shielding effect.Magnesium metal can chemically react with oxygen, generate MgO, its corrosion resisting property is not
Such as Ta2O5With TiO2By force, but Mg is the essential trace elements of the human body, can be by being fallen by body metabolism, so not resulted in human body
Influence.
In the present embodiment, protective coating is coated on the bone interface of knee-joint prosthesis.
Specifically, as shown in figure 1, knee-joint prosthesis also includes distal femoral component 20, protective coating is arranged on distal femoral component 20
Medial surface.
Secondly, knee-joint prosthesis also includes tibial tray 30, and tibial tray 30 includes stage body portion 31 and the rod body part being connected with each other
32, protective coating is arranged on the upper surface in stage body portion 31 and the outer peripheral face of rod body part 32.
Upper surface in the present embodiment is that the upper and lower installed with prosthese is set to reference.
This programme prepares coating at bone interface, can improve the security and service life of titanium alloy material prosthese,.
This programme is that TaTiMg graded alloy coatings are prepared at knee joint bone interface by the method for magnetron sputtering.
The purpose of this programme is the deficiency for solving above-mentioned knee joint material, and one is prepared at artificial knee joint prosthesis bone interface
Plant safe and nontoxic, durable graded alloy coating.
To achieve these goals, this programme employs the work of magnetron sputtering TaTiMg graded alloy coating+diffusion in vacuum
Skill, technological principle is as follows：
Magnetron sputtering is the process of exchange of kinetic energy, when incoming particle with tens volts of energy-incident to target material surface when,
Generation elastic collision, energy transmission gives target surface atom, and target surface atom is again this energy transmission to interior atoms, so, energy
Amount is gradually transmitted.The outside momentum of target surface is pointed to when one of atom is obtained, while this momentum overcomes surface potential enough
During base, you can to depart from target surface as sputtered atom.
The energy for the atom being sputtered out is only 1% of projectile energy or so, and most of energy is consumed in and table
In the collision of layer atom.Sputtering typically only occur in the atom on several nanometers of surface, thus, it is believed that sputtering generation when atom from
Surface starts to peel off.
Sputtering sedimentation plated film is in high vacuum conditions, to use high-energy particle bombardment target, and the particle being shelled out fills
Reprimand is in vacuum chamber atmosphere, so as to be deposited on the film layer needed for matrix surface generation.Splash coating technology has simple to operate, work
The advantages of skill is reproducible, easy realization is automatically controlled.
Diffusion in vacuum is that sputtering is expanded by vacuum again after completing in order that the cohesive force of splash coating further increases
Dissipate, that is, be placed in vacuum high-temperature environment (fusing point for not exceeding base material) held for some time, furnace cooling of then cutting off the electricity supply,
Coating atoms are made to be sufficiently mixed with matrix atom in intersection, so as to increase coating cohesive force.
The utility model uses the form that TaTiMg is sputtered jointly, is mounted in Ta targets, Ti targets and Mg targets splashes respectively
Penetrate in instrument.The target platform of sputter uses particular design, and target shutter can complete opening and closing under the drive of servomotor
Action.When target shutter is fully open, then sputtering effect occurs for the gross area of target, and that target atom escaped is just more, so
The proportion containing this metal is just big in alloy coat；Conversely, the proportion containing this metal is just small in alloy coat.In addition to target metal,
Miscellaneous part is using the material for being not susceptible to sputtering effect, it is to avoid produce interference to coating.
The proportion of Ta, Ti and Mg element can be controlled in real time when preparing TaTiMg graded alloy coatings by designing this device,
The high Mg contents definite value of the low Ti contents of Ta contents at base material can be prepared, contained away from the high low Mg of Ti contents of Ta contents at base material
Measure the gradient coating of definite value.
This programme be at knee joint bone interface prepare be TaTiMg graded alloy coatings, using this coating advantage such as
Under：
(1) Ta metals, Ti metals and Mg metals are all biocompatible materialses, do not have toxic side effect to human body.
(2) modulus of elasticity of Ta metals, Ti metals and Mg metals is relatively low, especially Mg metals, its modulus of elasticity (40Gpa)
With the modulus of elasticity (10-30Gpa) of people's bone closely, it is adapted to do orthopedics transplanted material.
(3) Ta metals can be chemically reacted with Ti metals with oxygen, and Ta is generated respectively2O5With TiO2Oxide it is thin
Film, corrosion resistance is strong, and the risk by human body fluid corrosion failure is low；Mg metals chemically react with oxygen, generate MgO, its
Corrosion resisting property is not so good as Ta2O5With TiO2By force, but Mg is the essential trace elements of the human body, can be by being fallen by body metabolism, so to people
Body does not result in influence.
(4) Ta coating surface modifyings processing can effectively improve the anticorrosive and resistance to electrochemical corrosion energy of titanium alloy, for solution
Certainly provide and ensure the problem of biological medical titanium alloy implant aseptic loosening.
(5) at high operating temperatures, Ti metals can be with matrix material (Ti6Al4V the Ti phase double replacements in), so as to improve alloy
The adhesion of coating, extends knee-joint prosthesis service life.
(6) there is solution strengthening effect in alloy coat, i.e., a kind of metallic element, which is solid-solution in another metal, causes certain
The distortion of lattice of degree is so that the phenomenon that alloy strength is improved, this is better than simple substance coating mechanical property, it is not easy to produce coating
The phenomenon of cracking.
Therefore, add micro Mg again in TaTi alloy coats, the solution strengthening effect of alloy coat can be improved, increase
Plus the service life of coating.
(7) pressing close at Ti6Al4V base materials, Ti content is high, can make the line of demarcation obfuscation of coating and matrix, also may be used
To strengthen the adhesiveness of coating, extend the knee-joint prosthesis life-span；Outside alloy coat, Ta content is high, coating can be made true
Ta is sufficiently mixed in coating after sky diffusion, strengthens solution strengthening effect, improves strength of coating, extends the knee-joint prosthesis life-span.
Mg content definite value, but be uniformly distributed to as far as possible in coating, solution strengthening effect is improved, coating is improved strong
Degree, extends the knee-joint prosthesis life-span.
As can be seen from the above description, the utility model the above embodiments realize following technique effect：
Knee-joint prosthesis in the utility model includes prosthetic main and the protective coating being coated in prosthetic main, due to
Protective coating is coated in the outer surface of prosthetic main, so, and protective coating just can wrap material for Ti6Al4The vacation of V alloy
The outer surface of phosphor bodies, prevents the situation for occurring prosthese aseptic loosening because of Al, V elemental release from occurring, improves prosthese
Life-span, and the infringement of Al ions and V ion pair human bodies is prevented, improve the safety and reliability that prosthese is used.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (10)
1. a kind of knee-joint prosthesis, including prosthetic main (10), are characterised by, the knee-joint prosthesis also includes protective coating,
The protective coating is coated on the outer surface of the prosthetic main (10)；The prosthetic main (10) includes tibial tray (30), institute
Stage body portion (31) and rod body part (32) that tibial tray (30) includes being connected with each other are stated, the protective coating is arranged on the stage body portion
(31) upper surface and the outer peripheral face of the rod body part (32).
2. knee-joint prosthesis according to claim 1, it is characterised in that the protective coating sputtering sedimentation plated film.
3. knee-joint prosthesis according to claim 1, it is characterised in that the protective coating is alloy coat.
4. knee-joint prosthesis according to claim 1, it is characterised in that the protective coating is tantalum titanium magnesium alloy coating.
5. knee-joint prosthesis according to claim 4, it is characterised in that the protective coating is close to the prosthetic main
(10) tantalum content of the painting interval of side is less than its Ti content.
6. the knee-joint prosthesis according to claim 4 or 5, it is characterised in that the protective coating is away from the prosthese master
The tantalum content of the painting interval of body (10) side is more than its Ti content.
7. knee-joint prosthesis according to claim 1, it is characterised in that the protective coating includes Ta2O5Diaphragm.
8. knee-joint prosthesis according to claim 1, it is characterised in that the protective coating includes TiO2Diaphragm.
9. knee-joint prosthesis according to claim 1, it is characterised in that it is false that the protective coating is coated in the knee joint
On the bone interface of body.
10. knee-joint prosthesis according to claim 1, it is characterised in that the knee-joint prosthesis also includes distal femoral component
(20), the protective coating is arranged on the medial surface of the distal femoral component (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620849095.9U CN206560488U (en) | 2016-08-05 | 2016-08-05 | Knee-joint prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620849095.9U CN206560488U (en) | 2016-08-05 | 2016-08-05 | Knee-joint prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206560488U true CN206560488U (en) | 2017-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620849095.9U Active CN206560488U (en) | 2016-08-05 | 2016-08-05 | Knee-joint prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206560488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699860A (en) * | 2017-10-23 | 2018-02-16 | 南昌航空大学 | A kind of preparation method for improving medical porous titanium alloy bioactivity |
-
2016
- 2016-08-05 CN CN201620849095.9U patent/CN206560488U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699860A (en) * | 2017-10-23 | 2018-02-16 | 南昌航空大学 | A kind of preparation method for improving medical porous titanium alloy bioactivity |
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