CN105147419A - Knee joint prosthesis capable of being matched with diseased knee joint - Google Patents
Knee joint prosthesis capable of being matched with diseased knee joint Download PDFInfo
- Publication number
- CN105147419A CN105147419A CN201510644396.8A CN201510644396A CN105147419A CN 105147419 A CN105147419 A CN 105147419A CN 201510644396 A CN201510644396 A CN 201510644396A CN 105147419 A CN105147419 A CN 105147419A
- Authority
- CN
- China
- Prior art keywords
- knee joint
- platform
- condyle
- knee
- prosthesis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Prostheses (AREA)
Abstract
The invention discloses a knee joint prosthesis capable of being matched with a diseased knee joint. The knee joint prosthesis capable of being matched with the diseased knee joint comprises a femoral condyle (1), a platform mat and a platform holder. The platform mat comprises an inner condyle (2) and an outer condyle (3) which are arranged on the two sides respectively. The inner condyle and the outer condyle are integrally formed to form the platform mat. The thickness of an inner condyle platform mat body is larger than that of an outer condyle platform mat body so that the knee joint can move to perform outwards-turning movement. According to the knee joint prosthesis capable of being matched with the diseased knee joint, the knee joint can physiologically turn outwards by 6 degrees or so during movement. The individually-designed prosthesis is adopted, the platform mat can have an extremely high joint face shape suitability degree, mechanical stress of a joint face can be distributed on a larger area, the proportion of contact stress is reduced, and excessive abrasion of the platform mat is avoided; a fermoral prosthesis in the knee joint prosthesis and the platform mat are good in geometrical shape match, and therefore abnormal movement is obviously reduced, and the knee joint prosthesis can have more superior knee joint dynamics.
Description
Technical field
The present invention relates to a kind of medical prosthesis, particularly relate to and a kind ofly can make the kneed knee-joint prosthesis of the mated sufferer of knee joint proper motion.
Background technology
Knee-joint prosthesis is for replacing kneed surgical implant, for the knee replacement surgery of knee joint surface, existing knee-joint prosthesis structure is mainly made up of the structure of press-fit, comprises condyle of femur, platform pad and platform holder, wherein, the material of condyle of femur, platform holder is vitallium, the material of platform pad is ultra-high molecular weight polyethylene, as shown in Figure 1, platform holder and platform pad sealed for being press-fitted, the front portion of platform pad is provided with translot, is convenient to the locked portions when platform holder and platform pad are installed and bounces back.
Above-mentioned knee joint, though alternative knee joint femoral and tibia part articular surface, has progressive really, but but find when reality uses also to have some shortcomings in its structure, cause this knee joint in practical application, fail to reach best result of use, and its shortcoming can be summarized as follows:
1) much research shows that various fixed platform knee prosthesis all exists improper motion of knee joint pattern, after the total knee replacement that the low shape of posterior cruciate ligament conservative is right, after tibiofemoral contact position is positioned at normal position when knee joint is stretched, then forwards move when flexing, the femur of this contradiction depends primarily on the geometric shape of prosthese and the tension force of ligament relative to the activity of tibia, and this abnormal activity can cause the Rapid Damage of polyethylene liner.
2) need when platform pad and platform holder are installed just can be in place by very large thrust, by the conduction of power, the bone cement between platform holder and tibia cross section may be made to produce gap.In life-time service, there is loosening danger in platform holder and tibia cross section afterwards.
Still there is LCS and contradiction between rotating freely in the prosthese of existing Platform Designing, do not mate owing to fixed platform prosthetic designs must there be slight geometric shape, the kinetics deviation of the exception therefore occurred in low restricted type prosthese still exists, and is urgently further improved.How developing one and meet local physiological and biomechanics requirement, can reproduce the prosthese of the normal kinematics character of knee joint, is one of current important subject in this area.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, the right kneed knee-joint prosthesis of mated sufferer of high articular surface shape can be had.
For achieving the above object, a kind of concrete technical scheme of mating the kneed knee-joint prosthesis of sufferer of the present invention is:
One can mate the kneed knee-joint prosthesis of sufferer, comprise condyle of femur, platform pad and platform holder, platform pad comprises the interior condyle and ectocondyle that are separately positioned on both sides, interior condyle and ectocondyle one-body molded formation platform pad, the thickness of interior condyle platform pad is greater than the thickness of ectocondyle platform pad, and to make, knee joint is movable carries out motion of turning up.
A kind of advantage of mating the kneed knee-joint prosthesis of sufferer of the present invention is:
1) knee joint can reach physiology at the volley and turn up about 6 degree;
2) adopt the prosthese of personalized designs, platform can be made to be lined with high articular surface shape right, the mechanical stress of articular surface can be distributed on larger area, makes the reduction that contact stress is proportional, avoids the excessive wear of platform pad;
3) in knee-joint prosthesis, femoral prosthesis peace cushion has good geometric match, thus considerably reduces abnormal movement, makes it have more superior knee joint kinetics.
Accompanying drawing explanation
Fig. 1 is the structural representation of the knee-joint prosthesis of prior art;
Fig. 2 is the structural representation of condyle in platform pad in the present invention;
Fig. 3 is the side view of condyle in the platform pad in Fig. 2;
Fig. 4 is the structural representation of platform pad ectocondyle in invention
Fig. 5 is the side view of the platform pad ectocondyle in Fig. 4.
Detailed description of the invention
In order to better understand object of the present invention, structure and function, below in conjunction with accompanying drawing, further detailed description is done to a kind of knee-joint prosthesis of the present invention.
The invention discloses one and can mate the kneed knee-joint prosthesis of sufferer, comprise condyle of femur 1, platform pad and platform holder, as shown in Figures 2 to 5, it shows that platform pad is spill for the platform pad in the knee-joint prosthesis in the present invention, comprises the interior condyle 2 and ectocondyle 3 that are separately positioned on both sides, interior condyle and ectocondyle are connected to form platform pad, the thickness of interior condyle platform pad is greater than the thickness of ectocondyle platform pad, and can carry out motion of turning up during knee articulation motion, knee joint can be turned up 4-8 degree.
Further, knee-joint prosthesis of the present invention is made to measure according to the various sizes in sufferer knee joint, produce the femoral head prosthesis meeting sufferer size, it is right that platform pad can have high articular surface shape, the mechanical stress acting on articular surface can be distributed on larger area, make the reduction that contact stress is proportional, avoid the excessive wear of platform pad.
Further, platform pad is spill, is provided with groove, and condyle of femur is arranged in the groove of platform pad.The curve form of condyle of femur and the curve form of platform pad match, and decrease abnormal, erratic activity, can make the better moving rotary of knee joint, meet motion of knee joint.
One of the present invention can mate the kneed knee-joint prosthesis of sufferer, and knee joint can reach physiology at the volley and turn up about 6 degree; Adopt the prosthese of personalized designs, platform can be made to be lined with high articular surface shape right, the mechanical stress of articular surface can be distributed on larger area, makes the reduction that contact stress is proportional, avoids the excessive wear of platform pad; In knee-joint prosthesis, femoral prosthesis peace cushion has good geometric match, thus considerably reduces abnormal movement, makes it have more superior knee joint kinetics.
Further describe invention has been by specific embodiment above; but it should be understood that; here concrete description; should not be construed as the restriction to the spirit and scope of the invention; one of ordinary skilled in the art to the various amendments that above-described embodiment is made, belongs to the scope that the present invention protects after reading this specification.
Claims (3)
1. one kind can mate the kneed knee-joint prosthesis of sufferer, comprise condyle of femur (1), platform pad and platform holder, it is characterized in that, platform pad comprises the interior condyle (2) and ectocondyle (3) that are separately positioned on both sides, interior condyle and ectocondyle one-body molded formation platform pad, the thickness of interior condyle platform pad is greater than the thickness of ectocondyle platform pad, and to make, knee joint is movable carries out motion of turning up.
2. knee-joint prosthesis according to claim 1, is characterized in that, platform pad is spill, is provided with groove, and condyle of femur is arranged in the groove of platform pad.
3. knee-joint prosthesis according to claim 2, is characterized in that, the curve form of condyle of femur and the curve form of platform pad match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510644396.8A CN105147419A (en) | 2015-10-08 | 2015-10-08 | Knee joint prosthesis capable of being matched with diseased knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510644396.8A CN105147419A (en) | 2015-10-08 | 2015-10-08 | Knee joint prosthesis capable of being matched with diseased knee joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105147419A true CN105147419A (en) | 2015-12-16 |
Family
ID=54788725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510644396.8A Pending CN105147419A (en) | 2015-10-08 | 2015-10-08 | Knee joint prosthesis capable of being matched with diseased knee joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105147419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475415A (en) * | 2016-07-08 | 2019-03-15 | 拜欧米特制造有限责任公司 | Knee arthroplasty system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000076428A1 (en) * | 1999-06-16 | 2000-12-21 | Btg International Limited | Tibial component of a knee prosthesis |
| EP2255755A1 (en) * | 2007-11-02 | 2010-12-01 | Biomet UK Limited | Prosthesis for simulating natural kinematics |
| WO2013074145A1 (en) * | 2011-11-18 | 2013-05-23 | Zimmer, Inc. | Tibial bearing component for a knee prosthesis with improved articular characteristics |
| CN203138747U (en) * | 2012-12-26 | 2013-08-21 | 北京爱康宜诚医疗器材股份有限公司 | Novel tibial lateral integral pad prosthesis |
| WO2015095009A1 (en) * | 2013-12-17 | 2015-06-25 | Depuy (Ireland) | Low profile mobile/fixed prosthetic knee systems |
| US20150190235A1 (en) * | 2014-01-07 | 2015-07-09 | Derek J.W. McMinn | Knee prosthesis |
-
2015
- 2015-10-08 CN CN201510644396.8A patent/CN105147419A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000076428A1 (en) * | 1999-06-16 | 2000-12-21 | Btg International Limited | Tibial component of a knee prosthesis |
| EP2255755A1 (en) * | 2007-11-02 | 2010-12-01 | Biomet UK Limited | Prosthesis for simulating natural kinematics |
| WO2013074145A1 (en) * | 2011-11-18 | 2013-05-23 | Zimmer, Inc. | Tibial bearing component for a knee prosthesis with improved articular characteristics |
| CN203138747U (en) * | 2012-12-26 | 2013-08-21 | 北京爱康宜诚医疗器材股份有限公司 | Novel tibial lateral integral pad prosthesis |
| WO2015095009A1 (en) * | 2013-12-17 | 2015-06-25 | Depuy (Ireland) | Low profile mobile/fixed prosthetic knee systems |
| US20150190235A1 (en) * | 2014-01-07 | 2015-07-09 | Derek J.W. McMinn | Knee prosthesis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109475415A (en) * | 2016-07-08 | 2019-03-15 | 拜欧米特制造有限责任公司 | Knee arthroplasty system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1974693B1 (en) | Mobile tibial bearing assembly | |
| KR101617896B1 (en) | Total knee replacement prosthesis | |
| EP2165681B1 (en) | Fixed bearing joint endoprosthesis with combined congruent - incongruent prosthetic articulations | |
| US20100016978A1 (en) | Antero-posterior placement of axis of rotation for a rotating platform | |
| EP0993812A2 (en) | Femoral component for knee endoprosthesis | |
| CN104622605A (en) | Single-condylar knee joint prosthesis | |
| US20130204382A1 (en) | Total Knee Replacement Implant Based on Normal Anatomy and Kinematics | |
| US20170189195A1 (en) | Knee Prosthetic Implant | |
| Nakamura et al. | Fluoroscopic and computed tomographic analysis of knee kinematics during very deep flexion after total knee arthroplasty | |
| CN105193523A (en) | Ankle joint implant | |
| AU2013300021A1 (en) | Total knee replacement substituting function of anterior cruciate ligament | |
| US10413414B2 (en) | Replica guided motion knee | |
| CN105147419A (en) | Knee joint prosthesis capable of being matched with diseased knee joint | |
| Barink et al. | A mechanical comparison of high-flexion and conventional total knee arthroplasty | |
| Lian et al. | Patient-specific design and biomechanical evaluation of a novel bipolar femoral hemi-knee prosthesis | |
| US11331195B2 (en) | Articular gasket prosthesis and articular prosthesis with articular gasket prosthesis | |
| CN208048840U (en) | A kind of novel artificial knee joint tibial component | |
| CN106109063B (en) | A kind of artificial knee joint prosthesis | |
| CN204521059U (en) | Knee joint rotating platform prosthesis | |
| CN108135706B (en) | Knee endoprosthesis for replacing at least part of a knee joint | |
| CN105105888A (en) | Fixed platform knee joint prosthesis | |
| CN104490493A (en) | Knee-joint rotating platform prosthesis | |
| US9795489B2 (en) | System for a knee prosthetic | |
| CN111084678A (en) | Distal femoral prosthesis | |
| CN116059015A (en) | Knee joint spacer and knee joint prosthesis having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |
|
| RJ01 | Rejection of invention patent application after publication |