CN104758137A - Mobile-bearing prosthesis of knee joint - Google Patents
Mobile-bearing prosthesis of knee joint Download PDFInfo
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- CN104758137A CN104758137A CN201510128892.8A CN201510128892A CN104758137A CN 104758137 A CN104758137 A CN 104758137A CN 201510128892 A CN201510128892 A CN 201510128892A CN 104758137 A CN104758137 A CN 104758137A
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- platform
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- prosthese
- knee joint
- holder
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Abstract
The invention provides a mobile-bearing prosthesis of knee joint. The mobile-bearing prosthesis comprises a support (3) and a pad (2); supporting plate of the support (31) is of a die drawing design; a vertical column (21) which is of a round angle design is formed on the pad (2); a fitting bulge (22) in with a groove in the support and a pressing part (23) are formed at the lower part of the pad, wherein the pressing part (23) can be deformed and pressed into an accepting groove in the support. With the adoption of the structural design above, the mobile-bearing prosthesis of knee joint has the advantages that the wear of the vertical column can be reduced, the pads and supports of the knee joint prosthesis of adjacent modes can be perfectly matched, so that the prosthesis can be implanted well; the operation is convenient, the wear is reduced, and the service life of the prosthesis can be prolonged.
Description
Technical field
The present invention relates to the knee joint fixed platform prosthese used in a kind of knee surgery.
Background technology
Knee-joint prosthesis is used to replace kneed surgical implant, for knee joint surface knee replacement surgery.The structure of the knee-joint prosthesis structure of prior art mainly press-fit, as shown in Figure 1, include femur ankle, platform pad and platform holder, the material of described femur ankle and platform holder is ultra high molecular polyethylene, described platform pad and platform holder sealed for being press-fitted, platform pad front portion is provided with translot, is convenient to the locked portions when described platform holder and described platform pad are installed and bounces back.
Although the knee-joint prosthesis of this structure can substitute knee joint femoral and tibia part articular surface, and has certain progressive, in actual use still there is following defect:
1, the wearing and tearing of platform pad column are heavier, go down on one's knees 10-45 ° time, column contacts with cam rear wall, although improve knee-joint prosthesis stability at the volley, but in daily walking process, just there will be cam contact phenomenon, make polyethylene column comparatively quick-wearing, thus reduce the service life of prosthese, what add prosthese reprocesses probability.
2, platform pad and platform holder be same model in operation with the use of, but when there is patient femur's ankle prosthese in operation and tibial plateau prosthese model is inconsistent, in order to avoid femur platform prosthese is to the wearing and tearing of side para-ligament, the platform pad that model will be selected less and platform holder, but the tibial plateau of respective model can be made thus to exceed tibia cross section or be less than the phenomenon in tibia cross section, when tibial plateau is less than tibia cross section, there will be the probability that Postoperative Bone is hemorrhage, considerably increase the postoperative probability occurring prosthetic loosening due to tibial prosthesis cover part sclerotin pine simultaneously.
Therefore, how to develop one and meet local physiological and biomechanics requirement, reduce tibial plateau pad and wear and tear and facilitate prosthese model interworking in operation, can reproduce the prosthese of the normal kinematics character of knee joint, be one of important subject of this area.
Summary of the invention
The object of the invention is to the defect overcoming the existence of existing knee-joint prosthesis, a kind of novel platform holder peace cushion is provided, to realize the wearing and tearing reducing platform pad column, and the platform pad of adjacent model knee-joint prosthesis and the perfect interworking of platform holder, thus Using prosthesis is stablized, facilitating operation, reduction wearing and tearing, extend the prosthese life-span.
To achieve these goals, knee joint fixed platform prosthese of the present invention have employed following technical scheme, a kind of knee joint fixed platform prosthese, it includes femur ankle prosthese, platform holder and platform pad, wherein, the pallet of described platform holder have employed withdrawing pattern design, described platform holder pallet is provided with the fit for coordinating platform pad.
Further, described platform pad forms platform pad column, described platform pad column is fillet design, concentrates with stress when effectively avoiding column and cam contact; The bottom of described platform pad forms in order to the fitting projection and compressed portion with platform holder groove fit, and described compressed portion can by the dump tank of distortion press-in platform holder.
Further, described femur ankle prosthese and platform holder use the manufacture of vitallium material; Described platform pad have employed the manufacture of High molecular weight polyethylene material.
Have employed the knee joint fixed platform prosthese of said structure, by designing the outline withdrawing pattern at platform holder upper tray place, when doctor can be made in operation to occur patient femur's ankle prosthese and the inconsistent situation of tibial plateau prosthese model, increase the selection of platform holder prosthese model, thus obtain better tibia cross section prosthese coverage rate, avoid the complication such as Postoperative Bone is hemorrhage.
Accompanying drawing explanation
Fig. 1 a is prior art knee-joint prosthesis structural representation;
Fig. 1 b is prior art femur ankle borrowed structure schematic diagram;
Fig. 1 c is prior art platform mat structure schematic diagram;
Fig. 1 d is prior art platform holder structure schematic diagram;
Fig. 2 a is the structural representation of knee-joint prosthesis of the present invention;
Fig. 2 b is femur ankle borrowed structure schematic diagram of the present invention;
Fig. 2 c is platform mat structure schematic diagram of the present invention;
Fig. 2 d is platform holder structure schematic diagram of the present invention.
Detailed description of the invention
Object for a better understanding of the present invention, construction features and function, be described in detail the structure of a detailed description of the invention of the present invention and function below in conjunction with accompanying drawing.
Fig. 2 a is the structural representation of knee-joint prosthesis of the present invention, as shown in Figure 2 a, knee-joint prosthesis of the present invention includes femur ankle prosthese 1, platform holder 3 and platform pad 2, as shown in Figure 2 b, described femur ankle prosthese has cam, and described cam is arc line type, as as described in Fig. 2 d, the pallet 31 of described platform holder have employed withdrawing pattern design, in order to the size with adaptation platform pad 2, described platform holder pallet is provided with the fit 32 for coordinating platform pad; As shown in Figure 2 c, described platform pad 2, platform pad 2 forms platform pad column 21, and described platform pad column is fillet design, concentrates with stress when effectively avoiding column and cam contact, is also conducive to the service life extending platform pad; The bottom of described platform pad forms in order to the fitting projection 22 and compressed portion 23 with platform holder groove fit, and described compressed portion 23 by the dump tank of distortion press-in platform holder, then can restore to the original state, thus promotes coordinating of platform holder and platform pad.
Further, described femur ankle prosthese 1 and platform holder 3 use the manufacture of vitallium material.
Further, described platform pad 2 have employed the manufacture of High molecular weight polyethylene material.
Have employed the knee joint fixed platform prosthese of said structure, due to the high goodness of fit of femur ankle peace cushion articular surface, the matching in stock-tibial prosthesis face is improved, thus reduce the wearing and tearing of articular surface, by the reach of platform pad column is made knee-joint prosthesis go down on one's knees 45 ° time there is contacting of platform pad column and femur ankle cam, thus contact too much when avoiding the daily walking of prosthese, turn avoid when prosthese moves to 45 ° to deviate from because rolling after femur appearance.
Claims (4)
1. a knee joint fixed platform prosthese, it includes femur ankle prosthese (1), platform holder (3) and platform pad (2), it is characterized in that, the pallet (31) of described platform holder have employed withdrawing pattern design, described platform holder pallet is provided with the fit (32) for coordinating platform pad.
2. knee joint fixed platform prosthese as claimed in claim 1, it is characterized in that, described platform pad (2) forms platform pad column (21), and described platform pad column is fillet design, concentrates with stress when effectively avoiding column and cam contact; The bottom of described platform pad forms in order to the fitting projection (22) and compressed portion (23) with platform holder groove fit, and described compressed portion (23) can by the dump tank of distortion press-in platform holder.
3. knee joint fixed platform prosthese as claimed in claim 1, is characterized in that, described femur ankle prosthese (1) and platform holder (3) use the manufacture of vitallium material.
4. knee joint fixed platform prosthese as claimed in claim 1, it is characterized in that, described platform pad (2) have employed the manufacture of High molecular weight polyethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510128892.8A CN104758137A (en) | 2015-03-23 | 2015-03-23 | Mobile-bearing prosthesis of knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510128892.8A CN104758137A (en) | 2015-03-23 | 2015-03-23 | Mobile-bearing prosthesis of knee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104758137A true CN104758137A (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510128892.8A Pending CN104758137A (en) | 2015-03-23 | 2015-03-23 | Mobile-bearing prosthesis of knee joint |
Country Status (1)
| Country | Link |
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| CN (1) | CN104758137A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105105888A (en) * | 2015-09-28 | 2015-12-02 | 北京市春立正达医疗器械股份有限公司 | Fixed platform knee joint prosthesis |
| CN111297520A (en) * | 2020-03-23 | 2020-06-19 | 北京市春立正达医疗器械股份有限公司 | Biological type tibial plateau holds in palm and platform pad |
| CN111759547A (en) * | 2020-07-06 | 2020-10-13 | 北京市春立正达医疗器械股份有限公司 | Personalized pelvis prosthesis |
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| US20100298947A1 (en) * | 2009-04-22 | 2010-11-25 | Unger Anthony S | Precision Total Knee Arthroplasty |
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| CN101951859A (en) * | 2008-01-08 | 2011-01-19 | 科润泰克株式会社 | The artificial knee joint that has curvature portion on the bearing part |
| CN101977570A (en) * | 2008-02-11 | 2011-02-16 | 精密技术公司 | Knee prosthesis system with slope |
| CN201404314Y (en) * | 2009-04-09 | 2010-02-17 | 联合骨科器材股份有限公司 | Orthopaedic implant structure improvement |
| US20100298947A1 (en) * | 2009-04-22 | 2010-11-25 | Unger Anthony S | Precision Total Knee Arthroplasty |
| CN102133137A (en) * | 2010-01-21 | 2011-07-27 | 德普伊产品公司 | Knee prosthesis system |
| CN104027188A (en) * | 2013-03-07 | 2014-09-10 | 德普伊(爱尔兰)有限公司 | Fixed-bearing Knee Prosthesis Having Interchangeable Components |
| CN104042364A (en) * | 2013-03-14 | 2014-09-17 | 德普伊(爱尔兰)有限公司 | Orthopaedic Knee Prosthesis Having Stem Components With A Varying Number Of Slots |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105105888A (en) * | 2015-09-28 | 2015-12-02 | 北京市春立正达医疗器械股份有限公司 | Fixed platform knee joint prosthesis |
| CN111297520A (en) * | 2020-03-23 | 2020-06-19 | 北京市春立正达医疗器械股份有限公司 | Biological type tibial plateau holds in palm and platform pad |
| CN111759547A (en) * | 2020-07-06 | 2020-10-13 | 北京市春立正达医疗器械股份有限公司 | Personalized pelvis prosthesis |
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Application publication date: 20150708 |