CN206560485U - Borrowed structure - Google Patents
Borrowed structure Download PDFInfo
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- CN206560485U CN206560485U CN201620847811.XU CN201620847811U CN206560485U CN 206560485 U CN206560485 U CN 206560485U CN 201620847811 U CN201620847811 U CN 201620847811U CN 206560485 U CN206560485 U CN 206560485U
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- protective coating
- borrowed structure
- coating
- prosthetic main
- structure according
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Abstract
The utility model provides a kind of borrowed structure, including prosthetic main, and borrowed structure also includes protective coating, and protective coating is coated in the outer surface of prosthetic main.Borrowed structure 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 borrowed structure.
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 borrowed structure, to solve borrowed structure of the prior art
The problem of life-span is relatively low.
To achieve these goals, the utility model provides a kind of borrowed structure, including prosthetic main, and borrowed structure is also
Including protective coating, protective coating is coated in the outer surface of prosthetic main.
Further, protective coating is 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, borrowed structure is hip prosthesis, and protective coating is coated on the bone interface of hip prosthesis.
Further, hip prosthesis includes femoral stem and the neck of femur being connected with femoral stem, and protective coating is coated in stock
On bone handle.
Borrowed structure in the utility model includes prosthetic main and the protective coating being coated in prosthetic main, due to protecting
Shield coating is coated in the outer surface of prosthetic main, so, and protective coating just can wrap material for Ti6Al4The prosthese of V alloy
The outer surface of main body, prevents the situation for occurring prosthese aseptic loosening because of Al, V elemental release from occurring, improves the longevity of prosthese
Life, 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 borrowed structure of the present utility model.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, prosthetic main；20th, femoral stem；30th, neck of femur.
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.
The utility model provides a kind of borrowed structure, refer to Fig. 1, and the borrowed structure includes prosthetic main 10, prosthese
Structure also includes protective coating, and protective coating is coated in the outer surface of prosthetic main 10.
Borrowed structure in the utility model includes prosthetic main 10 and the protective coating being coated in prosthetic main 10, by
The outer surface of prosthetic main 10 is coated in protective coating, so, protective coating just can wrap material for Ti6Al4V alloy
Prosthetic main 10 outer surface, the situation for preventing from occurring because of Al, V elemental release prosthese aseptic loosening occurs, 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 is 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 TiO2Diaphragm.
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, borrowed structure is hip prosthesis, and protective coating is coated on the bone interface of hip prosthesis.
In the present embodiment, as shown in figure 1, hip prosthesis includes femoral stem 20 and the neck of femur being connected with femoral stem 20
30, protective coating is coated in femoral stem 20.Preferably, protective coating is coated in the outer peripheral face of the femoral stem of hip prosthesis.
It can be seen that, the present embodiment by the prepares coating at bone interface, can improve titanium alloy material prosthese security and
Service life.
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 hip joint prosthesis material, and one is prepared on artificial hip prosthesis surface
Plant safe and nontoxic, durable graded alloy coating.
To achieve these goals, the utility model employs magnetron sputtering TaTiMg graded alloy coating+diffusion in vacuum
Technique, 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% left side of projectile energy
The right side, most of energy is consumed in the collision with top layer atom.
Sputtering is typically only occurred in the atom on several nanometers of surface, thus, it is believed that atom is opened from surface when sputtering occurs
Begin 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 is full of
So as to the film layer being deposited on needed for matrix surface generation in vacuum chamber atmosphere.Splash coating technology has simple to operate, technique
The advantages of 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.
This programme uses the form that TaTiMg is sputtered jointly, and Ta targets, Ti targets and Mg targets are mounted in into sputter respectively
In.The target platform of sputter uses particular design, and target shutter can complete opening and closing action under the drive of servomotor.
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 alloy is applied
The proportion containing this metal is just big in layer；Conversely, the proportion containing this metal is just small in alloy coat.
In addition to target metal, miscellaneous part can avoid producing coating using the material for being not susceptible to sputtering effect
Interference.
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 hip joint surface prepare be TaTiMg graded alloy coatings, it is as follows using the advantage of this coating：
(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 hip 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) Ti is being pressed close to6Al4At V 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 hip prosthesis life-span；
Outside alloy coat, Ta content is high, and Ta after Coatings in Vacuum diffusion can be made to be sufficiently mixed in coating, strengthened
Solution strengthening effect, improves strength of coating, extends the hip prosthesis life-span.Mg content definite value, but be uniformly distributed to as far as possible
In coating, solution strengthening effect is improved, strength of coating is improved, extends the hip prosthesis life-span.
As can be seen from the above description, the utility model the above embodiments realize following technique effect：
Borrowed structure in the utility model includes prosthetic main and the protective coating being coated in prosthetic main, due to protecting
Shield coating is coated in the outer surface of prosthetic main, so, and protective coating just can wrap material for Ti6Al4The prosthese of V alloy
The outer surface of main body, prevents the situation for occurring prosthese aseptic loosening because of Al, V elemental release from occurring, improves the longevity of prosthese
Life, 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 borrowed structure, including prosthetic main (10), it is characterised in that the borrowed structure also includes protective coating, institute
State the outer surface that protective coating is coated in the prosthetic main (10).
2. borrowed structure according to claim 1, it is characterised in that the protective coating is sputtering sedimentation plated film.
3. borrowed structure according to claim 1, it is characterised in that the protective coating is alloy coat.
4. borrowed structure according to claim 1, it is characterised in that the protective coating is tantalum titanium magnesium alloy coating.
5. borrowed structure according to claim 4, it is characterised in that the protective coating is close to the prosthetic main (10)
The tantalum content of the painting interval of side is less than its Ti content.
6. the borrowed structure according to claim 4 or 5, it is characterised in that the protective coating is away from the prosthetic main
(10) tantalum content of the painting interval of side is more than its Ti content.
7. borrowed structure according to claim 1, it is characterised in that the protective coating includes Ta2O5Diaphragm.
8. borrowed structure according to claim 1, it is characterised in that the protective coating includes TiO2Diaphragm.
9. borrowed structure according to claim 1, it is characterised in that the borrowed structure is hip prosthesis, the guarantor
Shield coating is coated on the bone interface of the hip prosthesis.
10. borrowed structure according to claim 9, it is characterised in that the hip prosthesis include femoral stem (20) and
The neck of femur (30) being connected with the femoral stem (20), the protective coating is coated in the femoral stem (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620847811.XU CN206560485U (en) | 2016-08-05 | 2016-08-05 | Borrowed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620847811.XU CN206560485U (en) | 2016-08-05 | 2016-08-05 | Borrowed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206560485U true CN206560485U (en) | 2017-10-17 |
Family
ID=60029707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620847811.XU Active CN206560485U (en) | 2016-08-05 | 2016-08-05 | Borrowed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206560485U (en) |
-
2016
- 2016-08-05 CN CN201620847811.XU patent/CN206560485U/en active Active
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