CN206228469U - A kind of integral type artificial complete knee joint prosthese - Google Patents
A kind of integral type artificial complete knee joint prosthese Download PDFInfo
- Publication number
- CN206228469U CN206228469U CN201620357753.2U CN201620357753U CN206228469U CN 206228469 U CN206228469 U CN 206228469U CN 201620357753 U CN201620357753 U CN 201620357753U CN 206228469 U CN206228469 U CN 206228469U
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- China
- Prior art keywords
- femur
- condyle
- integral type
- knee joint
- shin bone
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Abstract
Condyle of femur and shin bone the utility model discloses a kind of integral type artificial complete knee joint prosthese, including interconnection are padded, and condyle of femur and shin bone pad are made of polyether-ether-ketone or derivatives thereof.The integral type artificial complete knee joint prosthese that the utility model is provided has anti-wear performance higher, preferable biocompatibility and preferable shock-absorbing capacity, its biological property for being capable of more preferable simulation Normal Knee, also the subjective feeling of patient can be improved, its long service life, revision rate is low, will not produce Metal and allergic reaction and not influence perspective to develop and Magnetic resonance imaging.
Description
Technical field
The utility model is related to medical rehabilitation instrument field, more particularly to a kind of integral type artificial complete knee joint prosthese.
Background technology
Knee joint is that human body is maximum and construction is most complicated, damages the also more joint of chance.Joint replacement is to improve at present
The common method of knee joint function, can mitigate arthralgia, and orthotic joint deformity recovers range of motion.Traditional knee is closed
Section prosthese is made up of condyle of femur, pad, the part of tibia support three, therefore articular surface skimming wear and lining between condyle of femur and pad
Fretting wear between pad and tibia support is all very serious, substantially reduces the service life of knee-joint prosthesis.In addition, mesh
Preceding conventional material is CoCrMo alloys/UHMWPE frictional interfaces, and this interface has preferable frictional behaviour and super high molecular weight
Polyethylene provides certain shock-absorbing capacity, but the particle that the abrasion of polyethylene is produced under long-term use can be with inflammation inducing anti-
Should, induce bone and dissolve and cause prosthetic loosening；In addition, CoCrMo alloy elastics modulus is big, stress shielding problem can be produced, with this
Meanwhile, CoCrMo alloys can discharge a certain amount of metal ion, there is certain toxicity to body；Finally, metal material can be penetrated in X
Show artifact under line, and influence the imaging of nuclear magnetic resonance, therefore in the urgent need to a kind of high abrasion, with preferable biocompatibility
With preferable shock-absorbing capacity and the knee-joint prosthesis of long service life.
Utility model content
The technical problems to be solved in the utility model is, for artificial knee joint prosthesis in the prior art because easy to wear
Easy inflammation inducing reaction, bone dissolve and cause prosthetic loosening and can produce stress shielding problem, have certain toxicity to body
And the drawbacks described above of artifact is formed under X-ray, there is provided a kind of high abrasion, with preferable biocompatibility and preferable resiliency
Can, can more preferably the biological property of simulation Normal Knee, Metal and allergic reaction will not be produced, can be improved
The subjective feeling of patient, the artificial complete knee joint prosthese for increasing the service life and reducing revision rate.
The utility model is in order to solve the above technical problems, its technical scheme for being used is as follows：
A kind of integral type artificial complete knee joint prosthese, including be connected with each other condyle of femur and shin bone pad, and condyle of femur and
Shin bone pad is made of polyether-ether-ketone or derivatives thereof.
Integral type artificial complete knee joint prosthese described in the utility model includes the condyle of femur being connected with each other and shin bone pad, i.e.,
Pad is integrally formed with tibia support, with padding in the prior art compared with tibia support is separately separately provided, by pad and shin bone
Support is integrally molded so as shin bone pad and not only simplify the structure of the integral type artificial complete knee joint prosthese, and avoids pad
Fretting wear between tibia support, helps to extend the service life of the integral type artificial complete knee joint prosthese, reduces
Revision rate, also reduces the generation of wear particle, alleviates inflammatory reaction, improves the subjective feeling of patient.
Above-mentioned condyle of femur and shin bone pad are made of polyether-ether-ketone or derivatives thereof, polyether-ether-ketone or derivatives thereof tool
There are relatively low coefficient of friction, relatively low wear rate and preferable elastic modelling quantity, so that the integral type artificial complete knee joint
Prosthese has high-wear resistance and preferable shock-absorbing capacity, greatly reduces abrasion, and then contribute to reduction bone to dissolve and described
The incidence of integral type artificial complete knee joint prosthetic loosening, and it is capable of the biological property of more preferable simulation Normal Knee；Except this
Outside, polyether-ether-ketone or derivatives thereof also has good biocompatibility, is so favorably improved the integral type manually complete
The biocompatibility of knee-joint prosthesis, helps to improve the subjective feeling of patient.In addition, because above-mentioned condyle of femur and shin bone are padded
It is made of polyether-ether-ketone or derivatives thereof, so that not metal-containing material in the integral type artificial complete knee joint prosthese,
Metal and allergic reaction will not be produced, does not influence perspective to develop and Magnetic resonance imaging.
In integral type artificial complete knee joint prosthese described in the utility model, the elasticity of above-mentioned condyle of femur or shin bone pad
The span of modulus is 10GPa~25GPa, and such design causes the elastic modelling quantity and human body bone of condyle of femur or shin bone pad
Tissue is close, can avoid stress shielding, and body bone tissue can be played a protective role, and helps to reduce bone dissolving and described one
The incidence of body formula artificial complete knee joint prosthetic loosening, further extends the use of the integral type artificial complete knee joint prosthese
In the life-span, reduce its revision rate.If the elastic modelling quantity of condyle of femur or shin bone pad is less than 10GPa, then the one can be caused
The intensity of formula artificial complete knee joint prosthese is too poor, if the elastic modelling quantity of condyle of femur or shin bone pad is more than 25GPa, then can cause
Stress shielding, that is to say, that the span of the elastic modelling quantity for padding condyle of femur or shin bone is defined to 10GPa~25GPa, makes
Obtaining the integral type artificial complete knee joint prosthese can simulate the performance of skeleton, and stress is avoided while its intensity is ensured
Block.
Used as preferred scheme of the present utility model, the lower surface of above-mentioned condyle of femur is provided with kneecap chute.
In integral type artificial complete knee joint prosthese described in the utility model, the kneecap chute that condyle of femur lower surface is set,
Condyle of femur is enabled to be fitted with patellar tract, so as to prevent kneecap incarceration or abrasion.
Used as preferred scheme of the present utility model, the upper surface of above-mentioned condyle of femur is provided with condyle of femur rock-steady structure.
In integral type artificial complete knee joint prosthese described in the utility model, the condyle of femur stabilization that condyle of femur upper surface is set
Structure can limit condyle of femur movement, play a part of resected femur condyle；In addition, the condyle of femur rock-steady structure can be channel-shaped knot
Structure, can also be in the form of a column.
Used as preferred scheme of the present utility model, the tip edge of above-mentioned shin bone pad is provided with kneecap groove.
In integral type artificial complete knee joint prosthese described in the utility model, the kneecap of the tip edge setting of shin bone pad
Groove is conducive to the transmission of ligamentum patellae strength, also causes that shin bone pad can fit with patellar tract, so as to prevent ligamentum patellae from being ground
Damage.
It is further preferred that the top of above-mentioned shin bone pad is provided with anterior lip, and the anterior lip is located at the top position of kneecap groove.
In technical scheme described in the utility model, the anterior lip that the top of shin bone pad is set can be with condyle of femur outside
Laminating so that the integral type artificial complete knee joint prosthese stretches a stability with higher.
In integral type artificial complete knee joint prosthese described in the utility model, the upper surface of above-mentioned shin bone pad is provided with nest post
Structure, the nest rod structure can prevent condyle of femur from being slipped forward under high flexion state, that is, contribute to maintain integral type artificial
The stability of total knee prostheses.
Used as preferred scheme of the present utility model, above-mentioned shin bone pad bottom is provided with fixed column.
In technical scheme described in the utility model, the fixed column that shin bone pad bottom is set can be tied with cancellous bone stabilization
Close, serve the effect of integral type artificial complete knee joint prosthese described in stable bond and shin bone.
It is further preferred that the outer surface of above-mentioned fixed column is additionally provided with least one pair of fixed-wing, and the fixed-wing and shin
The bottom connection of bone pad.
In technical scheme described in the utility model, at least one pair of fixed-wing that the outer surface of the fixed column is set also may be used
With with cancellous bone stable bond, also can integral type artificial complete knee joint prosthese described in stable bond and shin bone effect, and should
Fixed-wing is also possible to prevent shin bone pad rotation so that the integral type artificial complete knee joint prosthese has preferably early stage steady
It is qualitative.
As preferred scheme of the present utility model, the hardness of the hardness more than shin bone pad of above-mentioned condyle of femur.
It is more than shin bone by the hardness Design of condyle of femur in integral type artificial complete knee joint prosthese described in the utility model
The hardness of pad so that shin bone pad slows down condyle of femur as the side of being worn while comfort cushioning and function of joint is ensured
Abrasion between shin bone pad, helps to lift the shock-absorbing capacity of the integral type artificial complete knee joint prosthese, also beneficial to prolonging
The service life of the length integral type artificial complete knee joint prosthese；If condyle of femur is identical with the hardness that shin bone is padded, then femur
Condyle and shin bone pad between abrasion meeting quite it is serious；If the hardness of condyle of femur can then be caused less than the hardness of shin bone pad
Condyle of femur deforms in wear process so that the function of joint of the integral type artificial complete knee joint prosthese is subject to serious shadow
Ring.
Used as preferred scheme of the present utility model, above-mentioned condyle of femur or shin bone pad surfaces are inlaid with developing materials.
After the integral type artificial complete knee joint prosthese is installed, the developing materials that condyle of femur or shin bone pad surfaces are inlayed
Facilitate carries out Fluoroscopy location to the integral type artificial complete knee joint prosthese, facilitates and uses.
In integral type artificial complete knee joint prosthese described in the utility model, the middle addition of above-mentioned polyether-ether-ketone or derivatives thereof
There are nano-particle or fibre reinforced materials, so contribute to improve the mechanical property of the integral type artificial complete knee joint prosthese.
It is all to be not specifically noted in addition, in technical scheme described in the utility model, can be by using in this area
Conventional technical means realize.
In sum, compared with prior art, the utility model has the advantages that：
1st, in technical scheme described in the utility model, shin bone insert integral shaping, with tibia support in the prior art and lining
Pad is separately independently arranged to be compared, and not only simplify the structure of the integral type artificial complete knee joint prosthese, and avoid pad
Fretting wear between tibia support, helps to extend the service life of the integral type artificial complete knee joint prosthese, reduces
Revision rate, also reduces the generation of wear particle, alleviates inflammatory reaction, improves the subjective feeling of patient；
2nd, in technical scheme described in the utility model, above-mentioned condyle of femur and shin bone pad using polyether-ether-ketone or its spread out
Biology is made, polyether-ether-ketone or derivatives thereof with relatively low coefficient of friction, relatively low wear rate and preferable elastic modelling quantity, this
Sample causes that the integral type artificial complete knee joint prosthese has high-wear resistance and preferable shock-absorbing capacity, greatly reduces mill
Damage, and then help to reduce the incidence of bone dissolving and the integral type artificial complete knee joint prosthetic loosening, and can be preferably
Simulate the biological property of Normal Knee；In addition, polyether-ether-ketone or derivatives thereof also has good biocompatibility, this
Sample is favorably improved the biocompatibility of the integral type artificial complete knee joint prosthese, helps to improve the subjective feeling of patient.
In addition, because above-mentioned condyle of femur and shin bone pad are made of polyether-ether-ketone or derivatives thereof, so that the integral type people
Not metal-containing material in work total knee prostheses, will not produce Metal and allergic reaction, do not influence perspective development and
Magnetic resonance imaging；
3rd, in technical scheme described in the utility model, the value model of the elastic modelling quantity of above-mentioned condyle of femur or shin bone pad
It is 10GPa~25GPa to enclose so that the elastic modelling quantity of condyle of femur or shin bone pad is close with body bone tissue, can avoid stress
Block, body bone tissue can be played a protective role；
4th, in technical scheme described in the utility model, the kneecap chute that condyle of femur lower surface is set enables to femur
Condyle is fitted with patellar tract, so as to prevent kneecap incarceration or abrasion；The kneecap groove that the tip edge of shin bone pad is set is conducive to
The transmission of ligamentum patellae strength, also causes that shin bone pad can fit with patellar tract, so as to prevent ligamentum patellae to be worn；
5th, in technical scheme described in the utility model, the condyle of femur rock-steady structure that condyle of femur upper surface is set can be limited
Condyle of femur is moved, and plays a part of resected femur condyle；
6th, in technical scheme described in the utility model, above-mentioned shin bone pad bottom is provided with fixed column and is arranged on this to be consolidated
At least one pair of fixed-wing of fixed column outer surface, the fixed column and fixed-wing with cancellous bone stable bond, play stabilization knot
Close the effect of the integral type artificial complete knee joint prosthese and shin bone；In addition, the fixed-wing is also possible to prevent shin bone pad rotation
Turn so that the integral type artificial complete knee joint prosthese has preferable early stage stability.
7th, it is the hardness padded more than shin bone by the hardness Design of condyle of femur in technical scheme described in the utility model,
So that shin bone pad is used as the side of being worn, condyle of femur is slowed down while comfort cushioning and function of joint is ensured and pads it with shin bone
Between abrasion, help to lift the shock-absorbing capacity of the integral type artificial complete knee joint prosthese, also beneficial to extending the integral type
The service life of artificial complete knee joint prosthese；
8th, in technical scheme described in the utility model, the developing materials that condyle of femur or shin bone pad surfaces are inlayed are facilitated
Fluoroscopy location is carried out to the integral type artificial complete knee joint prosthese, is facilitated and is used.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing：
Fig. 1 is the structural representation of integral type artificial complete knee joint prosthese in embodiment 1；
Fig. 2 is the explosive view of Fig. 1；
Fig. 3 is the structural representation of condyle of femur in embodiment 1；
Fig. 4 is the structural representation of integral type artificial complete knee joint prosthese in embodiment 2；
Fig. 5 is the explosive view of Fig. 4；
Fig. 6 is the structural representation of condyle of femur in embodiment 2；
In accompanying drawing, 1, condyle of femur；1.1st, kneecap chute；1.2nd, condyle of femur rock-steady structure；, 2, shin bone pad；2.1st, kneecap
Groove；2.2nd, anterior lip；2.3rd, nest rod structure；2.4th, fixed column；2.5th, fixed-wing；3rd, developing materials.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model, is not used to limit the utility model.
Embodiment 1：
A kind of integral type artificial complete knee joint prosthese, the integral type artificial complete knee joint prosthese is posterior stabilized prosthese, such as
Shown in Fig. 1, including the condyle of femur 1 and shin bone pad 2 being connected with each other, and the condyle of femur 1 and shin bone pad 2 use polyether-ether-ketone
Or derivatives thereof be made, and nano-particle or fibre reinforced materials are added with the polyether-ether-ketone or derivatives thereof.
As shown in Fig. 2 the lower surface of above-mentioned condyle of femur 1 is provided with kneecap chute 1.1, and as shown in figure 3, the condyle of femur 1
Upper surface is provided with condyle of femur rock-steady structure 1.2, and the condyle of femur rock-steady structure 1.2 is groove-like structure.Again as shown in Fig. 2 above-mentioned shin
The tip edge of bone pad 2 is provided with kneecap groove 2.1, and the top of shin bone pad 2 is additionally provided with anterior lip 2.2, and the anterior lip 2.2 is located at
The top position of kneecap groove 2.1, and the shin bone pad 2 upper surface be provided with nest rod structure 2.3, the nest rod structure 2.3 can in case
Only condyle of femur 1 is slipped forward under high flexion state, that is, contribute to maintain the stabilization of the integral type artificial complete knee joint prosthese
Property；The shin bone pads 2 bottoms and is provided with fixed column 2.4, and the outer surface of the fixed column 2.4 is provided with least one pair of fixed-wing 2.5,
Specifically, in the present embodiment, the outer surface of the fixed column 2.4 is provided with a pair of fixed-wings 2.5, and the fixed-wing 2.5 with
Shin bone pads the connection of 2 bottoms.
Again as depicted in figs. 1 and 2, above-mentioned condyle of femur 1 or shin bone pad 2 surface insertings developing materials 3, and the condyle of femur
Hardness of 1 hardness more than shin bone pad 2.
In the present embodiment, above-mentioned condyle of femur 1 or shin bone pad 2 elastic modelling quantity span for 10GPa~
25GPa。
Embodiment 2：
The present embodiment also provides a kind of integral type artificial complete knee joint prosthese, and the integral type artificial complete knee joint prosthese is
Posterior cruciate ligament of knee conservative prosthese, as shown in figure 4, its structure and the integral type artificial complete knee joint prosthese of the offer of embodiment 1
Structure is roughly the same, and difference therebetween is：
As shown in Figure 5 and Figure 6, the condyle of femur rock-steady structure 1.2 that the upper surface of condyle of femur 1 is set is in the form of a column；Due to retaining
Posterior cruciate ligament of knee, the upper surface of above-mentioned shin bone pad 2 need not set nest rod structure.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the utility model appended claims.
Claims (9)
1. a kind of integral type artificial complete knee joint prosthese, it is characterised in that padded including the condyle of femur (1) being connected with each other and shin bone
(2), and the condyle of femur (1) and shin bone pad (2) be made of polyether-ether-ketone or derivatives thereof, the polyether-ether-ketone or its
Nano-particle or fibre reinforced materials are added with derivative, the upper surface of the condyle of femur (1) is provided with condyle of femur rock-steady structure
(1.2), the condyle of femur rock-steady structure (1.2) is groove-like structure, and the upper surface of shin bone pad (2) is provided with nest rod structure
(2.3)。
2. a kind of integral type artificial complete knee joint prosthese, it is characterised in that padded including the condyle of femur (1) being connected with each other and shin bone
(2), and the condyle of femur (1) and shin bone pad (2) be made of polyether-ether-ketone or derivatives thereof, the polyether-ether-ketone or its
Nano-particle or fibre reinforced materials are added with derivative, the upper surface of the condyle of femur (1) is provided with condyle of femur rock-steady structure
(1.2), the condyle of femur rock-steady structure (1.2) is in the form of a column.
3. integral type artificial complete knee joint prosthese according to claim 1 and 2, it is characterised in that the condyle of femur (1)
Lower surface is provided with kneecap chute (1.1).
4. integral type artificial complete knee joint prosthese according to claim 1 and 2, it is characterised in that the shin bone pads (2)
Tip edge be provided with kneecap groove (2.1).
5. integral type artificial complete knee joint prosthese according to claim 4, it is characterised in that shin bone pad (2)
Top is provided with anterior lip (2.2), and the anterior lip (2.2) positioned at the top position of kneecap groove (2.1).
6. integral type artificial complete knee joint prosthese according to claim 1 and 2, it is characterised in that the shin bone pads (2)
Bottom is provided with fixed column (2.4).
7. integral type artificial complete knee joint prosthese according to claim 6, it is characterised in that the fixed column (2.4)
Outer surface is additionally provided with least one pair of fixed-wing (2.5), and the fixed-wing (2.5) is connected with shin bone pad (2) bottom.
8. integral type artificial complete knee joint prosthese according to claim 1 and 2, it is characterised in that the condyle of femur (1)
Hardness of the hardness more than shin bone pad (2).
9. integral type artificial complete knee joint prosthese according to claim 1 and 2, it is characterised in that the condyle of femur (1) or
Shin bone pad (2) surface inserting has developing materials (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357753.2U CN206228469U (en) | 2016-04-26 | 2016-04-26 | A kind of integral type artificial complete knee joint prosthese |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357753.2U CN206228469U (en) | 2016-04-26 | 2016-04-26 | A kind of integral type artificial complete knee joint prosthese |
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| Publication Number | Publication Date |
|---|---|
| CN206228469U true CN206228469U (en) | 2017-06-09 |
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ID=58985873
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| CN201620357753.2U Expired - Fee Related CN206228469U (en) | 2016-04-26 | 2016-04-26 | A kind of integral type artificial complete knee joint prosthese |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648672A (en) * | 2017-09-13 | 2018-02-02 | 北京爱康宜诚医疗器材有限公司 | Fluorine richness polyether-ether-ketone/graphite nanometer composite material and artificial joint prosthesis |
-
2016
- 2016-04-26 CN CN201620357753.2U patent/CN206228469U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107648672A (en) * | 2017-09-13 | 2018-02-02 | 北京爱康宜诚医疗器材有限公司 | Fluorine richness polyether-ether-ketone/graphite nanometer composite material and artificial joint prosthesis |
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