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CN205885583U - Artificial total knee joint prosthesis - Google Patents

Artificial total knee joint prosthesis Download PDF

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Publication number
CN205885583U
CN205885583U CN201620163696.4U CN201620163696U CN205885583U CN 205885583 U CN205885583 U CN 205885583U CN 201620163696 U CN201620163696 U CN 201620163696U CN 205885583 U CN205885583 U CN 205885583U
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China
Prior art keywords
liner
knee joint
condyle
femur
tibia support
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CN201620163696.4U
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Chinese (zh)
Inventor
肖骏
靳忠民
朱元莉
黄登峰
朱皓
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Tongji Hospital Affiliated To Tongji Medical College Of Huazhong University Of Science & Technology
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Tongji Hospital Affiliated To Tongji Medical College Of Huazhong University Of Science & Technology
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Priority to CN201620163696.4U priority Critical patent/CN205885583U/en
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Abstract

The utility model discloses an artificial total knee joint prosthesis, which comprises a femur condyle, a liner and a tibia support which are connected in sequence, wherein the upper surface of the liner is in sliding fit with the femur condyle, and the lower surface of the liner is matched with the tibia support; the femoral condyle, the liner and the tibial tray are all made of polyetheretherketone or derivatives thereof. The utility model provides an artifical total knee joint prosthesis has high wear resistance, better biocompatibility and better shock-absorbing capacity, can simulate the biological properties of normal knee joint better, can also improve patient's subjective impression, just artifical total knee joint prosthesis's long service life, the renovation rate is low, can not produce metal ion toxicity and anaphylactic reaction, does not influence perspective development and nuclear magnetic resonance formation of image.

Description

A kind of artificial complete knee joint prosthese
Technical field
This utility model is related to medical rehabilitation instrument field, more particularly, to a kind of artificial complete knee joint prosthese.
Background technology
Knee joint is that human body is maximum and construction is the most complicated, damages the also more joint of chance.Joint replacement is current improvement The common method of knee joint function, can mitigate arthralgia, orthotic joint deformity, recover range of motion.Artificial knee joint The material that prosthese is commonly used at present is cocrmo alloy/uhmwpe frictional interface, and this interface has preferable frictional behaviour and superelevation Molecular weight polyethylene provides certain shock-absorbing capacity, but because the granule that the abrasion of polyethylene produces can lure under life-time service Lead inflammatory reaction, induction bone dissolves and leads to prosthetic loosening;Secondly, cocrmo alloy elastic modulus is big, can produce stress shielding Problem;Again, cocrmo alloy can discharge a certain amount of metal ion, have certain toxicity to body;In addition, metal material meeting Show artifact under x-ray, and affect the imaging of nuclear magnetic resonance, NMR, therefore in the urgent need to a kind of high abrasion, there is preferable biology The compatibility and the knee-joint prosthesis of preferable shock-absorbing capacity and long service life.
Utility model content
The technical problems to be solved in the utility model is, for artificial knee joint prosthesis in prior art because easy to wear and Easily inflammation inducing reaction, bone dissolve and lead to prosthetic loosening and can produce stress shielding problem, have certain toxicity to body And the drawbacks described above of impact nuclear magnetic resonance, NMR molding, a kind of high abrasion is provided, there is preferable biocompatibility and preferable buffering Performance, can more preferably the biological property of simulation Normal Knee, improve the subjective feeling of patient, increase the service life and reduce The artificial complete knee joint prosthese of revision rate.
This utility model is to solve above-mentioned technical problem, and the technical scheme that it is adopted is as follows:
A kind of artificial complete knee joint prosthese, including the condyle of femur being sequentially connected, liner and tibia support, and the upper surface of liner Formed with condyle of femur and be slidably matched, and the lower surface of liner is coordinated with tibia support;
Condyle of femur, liner and tibia support are all made using polyether-ether-ketone or derivatives thereof.
In artificial complete knee joint prosthese described in the utility model, the upper surface of above-mentioned liner and condyle of femur form slip and join Close, and the lower surface of liner and tibia support coordinate, not only enable described artificial complete knee joint prosthese to replace human body total knee to close Section to realize this function of having of human body complete knee joint, and because for being slidably matched, serving as a contrast between the upper surface of liner and condyle of femur Contact surface between pad and tibia support is shiny surface, contributes to slowing down mutual between condyle of femur and liner, tibia support and liner Abrasion, extends the service life of described artificial complete knee joint prosthese, reduces its revision rate.
Above-mentioned condyle of femur, liner and tibia support are all made using polyether-ether-ketone or derivatives thereof, polyether-ether-ketone or it is derivative Thing has relatively low coefficient of friction, relatively low wear rate and preferable elastic modelling quantity so that described artificial complete knee joint is false Body has high-wear resistance and preferable shock-absorbing capacity, greatly reduces abrasion, and then contributes to reducing bone dissolving and described people The incidence rate that work total knee prostheses loosen, and it is capable of the biological property of more preferable simulation Normal Knee;In addition, polyethers Ether ketone or derivatives thereof also has good biocompatibility, is so favorably improved the biology of described artificial complete knee joint prosthese The compatibility, contributes to improving the subjective feeling of patient.In addition, because above-mentioned condyle of femur, liner and tibia support are all using polyethers ether Ketone or derivatives thereof is made, so that not metal-containing material in described artificial complete knee joint prosthese, will not produce metal ion poison Property and anaphylaxiss, do not affect perspective development and NMR (Nuclear Magnetic Resonance)-imaging.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, the elastic modelling quantity of above-mentioned condyle of femur Span is 10gpa~25gpa.The span of the elastic modelling quantity of this condyle of femur is defined to 10gpa~25gpa, so Design make the elastic modelling quantity of condyle of femur and body bone tissue close, stress shielding can be avoided, body bone tissue can be risen To protective effect, on the one hand, can avoid producing wear particle, contribute to reducing bone dissolving and described artificial complete knee joint prosthese pine Dynamic incidence rate, on the other hand, contributes to extending the service life of described artificial complete knee joint prosthese further, reduces it and turn over Repair rate.If the elastic modelling quantity of condyle of femur is less than 10gpa, then the intensity of described artificial complete knee joint prosthese can be made too poor, such as If the elastic modelling quantity of condyle of femur is more than 25gpa, stress shielding can be led to that is to say, that taking the elastic modelling quantity of condyle of femur Value scope is defined to 10gpa~25gpa so that described artificial complete knee joint prosthese can simulate the performance of skeleton, is protecting Stress shielding is avoided while demonstrate,proving its intensity.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, the lower surface of above-mentioned condyle of femur is provided with Patella chute.The patella chute of condyle of femur lower surface setting, is enabled to condyle of femur and is fitted with patellar tract, thus preventing patella Incarceration or abrasion.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, the upper surface of described condyle of femur is provided with Condyle of femur rock-steady structure.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, above-mentioned liner apex edge is provided with kneecap Bone groove.The patella groove of this liner apex edge setting is conducive to the transmission of patellar ligament strength, also enables liner and patella rail Mark is fitted, thus preventing patellar ligament from wearing and tearing.
In artificial complete knee joint prosthese described in the utility model, liner is additionally provided with anterior lip, and this anterior lip is positioned at above-mentioned The top position of patella groove, this anterior lip can with fit outside condyle of femur so that described artificial complete knee joint prosthese have higher Stretch a stability.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, the elastic modelling quantity of above-mentioned tibia support Span is 10gpa~25gpa.Same as above, the elastic modelling quantity of tibia support is defined to 10gpa~25gpa, such sets Meter makes the elastic modelling quantity of tibia support and body bone tissue close, can avoid stress shielding, can play guarantor to body bone tissue Shield acts on, on the one hand, can avoid producing wear particle, contributes to reducing bone dissolving and described artificial complete knee joint prosthese further Loosening incidence rate, on the other hand, contributes to extending the service life of described artificial complete knee joint prosthese, its revision rate further Also it is greatly reduced.If the elastic modelling quantity of tibia support is less than 10gpa, then can make the intensity of described artificial complete knee joint prosthese too Difference, if the elastic modelling quantity of tibia support is more than 25gpa, then can lead to stress shielding, i.e. by the value of the elastic modelling quantity of tibia support Scope is defined to 10gpa~25gpa so that described artificial complete knee joint prosthese can simulate the performance of skeleton, is ensureing Stress shielding is avoided while its intensity.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, above-mentioned tibia support includes tibial plateau And be arranged on the fixing axle of this tibial plateau bottom, and the outer surface of this fixing axle is provided with least one pair of fixed-wing.This is fixed Axle, fixed-wing with spongy bone stable bond, can play the effect of artificial complete knee joint prosthese described in stable bond and spongy bone; This fixed-wing can prevent this tibia support from rotating so that described artificial complete knee joint prosthese has preferable early stage stability.
In artificial complete knee joint prosthese described in the utility model, between above-mentioned liner and tibia support, it is provided with limitation unit, This limitation unit can prevent liner from deviating from, and plays the effect being connected between stable liner and tibia support.
Above-mentioned limitation unit includes the liner limiting structure being arranged on liner and the anticreep knot being arranged on tibia support top Structure, and this liner limiting structure cooperated with disconnecting prevention structure.When liner limiting structure is cooperated with disconnecting prevention structure, just may be used Reach and liner and tibia support are consolidated the purpose being combined together, using very convenient.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, above-mentioned condyle of femur and tibia support hard Degree is all higher than the hardness of liner.Such design makes liner as the side of being worn, and is ensureing comfort cushioning and function of joint Slow down the abrasion between condyle of femur and liner, tibia support and liner simultaneously, contribute to lifting described artificial complete knee joint prosthese Shock-absorbing capacity;If condyle of femur is all identical with the hardness of liner with the hardness of tibia support, then condyle of femur and liner, tibia support and lining Abrasion between pad can be quite serious;If the hardness of condyle of femur and tibia support is respectively less than the hardness of liner, then can make femur Condyle deforms in wear process so that the function of joint of described artificial complete knee joint prosthese is severely impacted.
As one kind improvement to artificial complete knee joint prosthese described in the utility model, above-mentioned condyle of femur, liner or tibia Support surface inserting has developing materials.After described artificial complete knee joint prosthese is installed, condyle of femur, liner or tibia support surface inserting Developing materials facilitate Fluoroscopy location carried out to described artificial complete knee joint prosthese.
In addition, in technical scheme described in the utility model, all be not specifically noted, all can be by using in this area Routine techniquess means realizing.
Therefore, the artificial complete knee joint prosthese that this utility model provides has high-wear resistance, preferable biocompatibility With preferable shock-absorbing capacity, the biological property being capable of more preferable simulation Normal Knee moreover it is possible to improve the subjective feeling of patient, and The long service life of described artificial complete knee joint prosthese, revision rate is low, will not produce Metal and anaphylaxiss, not shadow Ring perspective development and NMR (Nuclear Magnetic Resonance)-imaging.
Brief description
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the installation diagram of artificial complete knee joint prosthese in embodiment one;
Fig. 2 is the explosive view of artificial complete knee joint prosthese in embodiment one;
Fig. 3 is the structural representation of condyle of femur in embodiment one;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the structural representation of liner in embodiment one;
Fig. 6 is the structural representation of tibia support in embodiment one;
Fig. 7 is the installation diagram of artificial complete knee joint prosthese in embodiment two;
Fig. 8 is the explosive view of artificial complete knee joint prosthese in embodiment two;
Fig. 9 is the structural representation of condyle of femur in embodiment two;
Figure 10 is the top view of Fig. 9;
Figure 11 is the structural representation of liner in embodiment two;
Figure 12 is the structural representation of tibia support in embodiment two;
Now will be as follows for the label declaration in accompanying drawing: 1 is condyle of femur, 1.1 is patella chute, and 1.2 is condyle of femur rock-steady structure, 2 is liner, and 2.1 is patella groove, and 2.2 is anterior lip, and 2.3 is nest rod structure, and 2.4 is that ellipse column is convex, and 2.5 is that strip is convex, and 2.6 is lock Determine groove, 3 is tibia support, 3.1 is tibial plateau, 3.2 is fixing axle, 3.3 is fixed-wing, 3.4 grooves, 3.5 is fixing groove, 3.6 For tab, 4 is 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 enforcement Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only in order to explain this Utility model, is not used to limit this utility model.
Embodiment one:
A kind of artificial complete knee joint prosthese, this artificial complete knee joint prosthese is ligamentaum cruciatum conservative prosthese, i.e. cr prosthese, As depicted in figs. 1 and 2, including the condyle of femur 1 being sequentially connected, liner 2 and tibia support 3, and the upper surface of this liner 2 and condyle of femur 1 formation is slidably matched, and the lower surface of this liner 2 and tibia support 3 coordinate, and this liner 2 is smooth with the contact surface of tibia support 3 Face.
Above-mentioned condyle of femur 1, liner 2 and tibia support 3 are all made using polyether-ether-ketone or derivatives thereof, the spreading out of this polyether-ether-ketone Biology can be carbon fiber reinforced polyether-ether-ketone, glass fiber reinforced polyester ether ether ketone etc..
The span of the elastic modelling quantity of above-mentioned condyle of femur 1 is 10gpa~25gpa;As shown in Figure 3 and Figure 4, this condyle of femur 1 lower surface and upper surface are respectively equipped with patella chute 1.1 and condyle of femur rock-steady structure 1.2, and this condyle of femur 1 surface is also inlayed There are developing materials 4.
As shown in figure 5, the tip edge of this liner 2 is provided with patella groove 2.1, this liner 2 surface is also inlaid with development thing Matter 4.
The span of the elastic modelling quantity of above-mentioned tibia support 3 is 10gpa~25gpa;As shown in fig. 6, this tibia support 3 includes Tibial plateau 3.1 and the fixing axle 3.2 being arranged on this tibial plateau 3.1 bottom, and the outer surface of this fixing axle 3.2 be provided with to Few a pair of fixed-wing 3.3, concretely a pair of fixed-wing 3.3;In addition, the surface of this tibia support 3 is also inlaid with developing materials 4.
It is additionally provided with limitation unit, this limitation unit includes the lining being arranged on liner 2 between above-mentioned liner 2 and tibia support 3 Pad limiting structure and the disconnecting prevention structure being arranged on tibia support 3 top, and this liner limiting structure is cooperated with disconnecting prevention structure, from And allow liner 2 to rotate within the specific limits, specifically can refer to Fig. 5 and Fig. 6: this liner limiting structure is to be arranged on liner 2 bottom The ellipse column convex 2.4 at end, this disconnecting prevention structure includes being arranged on the groove 3.4 on tibia support 3 top, and this ellipse column convex 2.4 with recessed Groove 3.4 cooperates.
In the present embodiment, the hardness of above-mentioned condyle of femur 1 and tibia support 3 is all higher than the hardness of liner 2.
Embodiment two:
A kind of artificial complete knee joint prosthese, this artificial complete knee joint prosthese is posterior stabilized prosthese, i.e. ps type prosthese adopts Fixed platform designs, including the condyle of femur 1 being sequentially connected, liner 2 and tibia support 3, and as shown in Figure 7 and Figure 8, this liner 2 Upper surface is formed with condyle of femur and is slidably matched, and the lower surface of this liner and tibia support coordinate, and this liner 2 and tibia support 3 Contact surface is shiny surface.
Above-mentioned condyle of femur 1, liner 2 and tibia support 3 are all using polyether-ether-ketone or derivatives thereof (such as fibre reinforced polyethers Ether ketone, glass fiber reinforced polyester ether ether ketone etc.) make.
The span of the elastic modelling quantity of above-mentioned condyle of femur 1 is 10gpa~25gpa;As shown in Figure 9 and Figure 10, this femur The lower surface of condyle 1 and upper surface are respectively equipped with patella chute 1.1 and condyle of femur rock-steady structure 1.2, and this condyle of femur 1 surface is also inlayed It is embedded with developing materials 4.
As shown in figure 11, this liner 2 is provided with patella groove 2.1 and anterior lip 2.2, and wherein, patella groove 2.1 is located at this liner 2 Tip edge, this anterior lip 2.2 be located at patella groove 2.1 top position;The upper surface of this liner 2 is additionally provided with nest rod structure 2.3, This nest rod structure can prevent condyle of femur 1 from slipping forward under high flexion state, that is, contribute to maintaining artificial complete knee joint false The stability of body;In addition, this liner 2 surface is also inlaid with developing materials 4.
The span of the elastic modelling quantity of above-mentioned tibia support 3 is 10gpa~25gpa;As shown in figure 12, this tibia support 3 wraps The fixing axle 3.2 including tibial plateau 3.1 and being arranged on this tibial plateau 3.1 bottom, and the outer surface of this fixing axle 3.2 is provided with At least one fixed-wing 3.3, concretely a pair of fixed-wing 3.3;In addition, the surface of this tibia support 3 is also inlaid with developing materials 4.
It is additionally provided with limitation unit, this limitation unit includes the lining being arranged on liner 2 between above-mentioned liner 2 and tibia support 3 Pad limiting structure and the disconnecting prevention structure being arranged on tibia support 3 top, and this liner limiting structure is cooperated with disconnecting prevention structure, tool It is strip convex 2.5 and the lock slots 2.6 being arranged on liner 2 bottom that body can refer to Figure 11 and Figure 12: this liner limiting structure, and this is prevented De- structure includes fixing groove 3.5 and the tab 3.6 being arranged on tibia support 3 top, and this liner 2 can be along fixing groove 3.5 from forward direction After slip into, strip convex 2.5 and fixing groove 3.5 cooperate, and tab 3.6 and lock slots 2.6 mutually locking, thus stable serve as a contrast Pad 2, prevents from rotating and deviates from.
In the present embodiment, the hardness of above-mentioned condyle of femur 1 and tibia support 3 is also all higher than the hardness of liner 2.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted, And all these modifications and variations all should belong to the protection domain of this utility model claims.

Claims (9)

1. a kind of artificial complete knee joint prosthese is it is characterised in that include condyle of femur (1), liner (2) and the tibia support being sequentially connected (3), and the upper surface of described liner (2) and described condyle of femur (1) form and be slidably matched, and the lower surface of described liner (2) with Described tibia support (3) cooperation, is additionally provided with limitation unit between described liner (2) and described tibia support (3), described limitation unit bag Include the liner limiting structure being arranged on described liner (2) and the disconnecting prevention structure being arranged on described tibia support (3) top, described lining Pad limiting structure is cooperated with described disconnecting prevention structure so that described liner (2) rotates within the specific limits;
Described condyle of femur (1), liner (2) and tibia support (3) are all made using polyether-ether-ketone or derivatives thereof;
The span of the elastic modelling quantity of described condyle of femur (1) is 10gpa~25gpa.
2. artificial complete knee joint prosthese according to claim 1 is it is characterised in that described liner limiting structure is to be arranged on The ellipse column convex (2.4) of described liner (2) bottom, described disconnecting prevention structure includes being arranged on the groove on described tibia support (3) top (3.4), described ellipse column convex (2.4) and described groove (3.4) cooperate.
3. artificial complete knee joint prosthese according to claim 1 is it is characterised in that described liner limiting structure is to be arranged on The strip convex (2.5) of described liner (2) bottom and lock slots (2.6), described disconnecting prevention structure includes being arranged on described tibia support (3) The fixing groove (3.5) on top and tab (3.6), described liner (2) can be slipped into from front to back along described fixing groove (3.5), institute State strip convex (2.5) to cooperate with described fixing groove (3.5), described tab (3.6) and described lock slots (2.6) mutually interlock Fixed.
4. the artificial complete knee joint prosthese according to Claims 2 or 3 is it is characterised in that the lower surface of described condyle of femur (1) It is provided with patella chute (1.1), the upper surface of described condyle of femur (1) is provided with condyle of femur rock-steady structure (1.2).
5. the artificial complete knee joint prosthese according to Claims 2 or 3 is it is characterised in that described liner (2) tip edge sets There is patella groove (2.1).
6. the artificial complete knee joint prosthese according to Claims 2 or 3 is it is characterised in that the springform of described tibia support (3) The span of amount is 10gpa~25gpa.
7. the artificial complete knee joint prosthese according to Claims 2 or 3 is it is characterised in that described tibia support (3) includes tibia Platform (3.1) and the fixing axle (3.2) being arranged on described tibial plateau (3.1) bottom, and the outside table of described fixing axle (3.2) Face is provided with least one pair of fixed-wing (3.3).
8. the artificial complete knee joint prosthese according to Claims 2 or 3 is it is characterised in that described condyle of femur (1) and tibia support (3) hardness is all higher than the hardness of described liner (2).
9. the artificial complete knee joint prosthese according to Claims 2 or 3 is it is characterised in that described condyle of femur (1), liner (2) Or tibia support (3) surface inserting has developing materials (4).
CN201620163696.4U 2016-03-03 2016-03-03 Artificial total knee joint prosthesis Active CN205885583U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106726016A (en) * 2017-03-03 2017-05-31 叶川 A kind of knee joint prosthesis system and human synovial repair system
CN108938146A (en) * 2017-05-19 2018-12-07 上海博玛医疗科技有限公司 Knee-joint prosthesis
CN109009575A (en) * 2018-07-12 2018-12-18 宽岳医疗器材(苏州)有限公司 Artificial knee joint prosthesis
CN109662811A (en) * 2019-03-01 2019-04-23 安徽工程大学 A kind of artificial knee joint prosthesis
CN109662812A (en) * 2019-03-01 2019-04-23 安徽工程大学 A kind of knee-joint prosthesis
CN110680568A (en) * 2019-10-21 2020-01-14 北京安颂科技有限公司 Artificial tibia prosthesis and artificial knee joint
CN111616841A (en) * 2020-05-26 2020-09-04 天衍医疗器材有限公司 Novel knee joint prosthesis of locking mechanism
CN114983635A (en) * 2022-08-02 2022-09-02 北京爱康宜诚医疗器材有限公司 Joint spacer structure

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106726016A (en) * 2017-03-03 2017-05-31 叶川 A kind of knee joint prosthesis system and human synovial repair system
CN108938146A (en) * 2017-05-19 2018-12-07 上海博玛医疗科技有限公司 Knee-joint prosthesis
CN109009575A (en) * 2018-07-12 2018-12-18 宽岳医疗器材(苏州)有限公司 Artificial knee joint prosthesis
CN109009575B (en) * 2018-07-12 2024-02-20 宽岳医疗器材(苏州)有限公司 Artificial knee joint prosthesis
CN109662811A (en) * 2019-03-01 2019-04-23 安徽工程大学 A kind of artificial knee joint prosthesis
CN109662812A (en) * 2019-03-01 2019-04-23 安徽工程大学 A kind of knee-joint prosthesis
CN109662812B (en) * 2019-03-01 2024-05-17 安徽工程大学 Knee joint prosthesis
CN109662811B (en) * 2019-03-01 2024-05-17 安徽工程大学 Artificial knee joint prosthesis
CN110680568A (en) * 2019-10-21 2020-01-14 北京安颂科技有限公司 Artificial tibia prosthesis and artificial knee joint
CN111616841A (en) * 2020-05-26 2020-09-04 天衍医疗器材有限公司 Novel knee joint prosthesis of locking mechanism
CN111616841B (en) * 2020-05-26 2022-04-12 天衍医疗器材有限公司 Knee joint prosthesis of locking mechanism
CN114983635A (en) * 2022-08-02 2022-09-02 北京爱康宜诚医疗器材有限公司 Joint spacer structure

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