CN102499795A - Knee joint prosthesis with functions of elastic meniscus - Google Patents
Knee joint prosthesis with functions of elastic meniscus Download PDFInfo
- Publication number
- CN102499795A CN102499795A CN2011103546930A CN201110354693A CN102499795A CN 102499795 A CN102499795 A CN 102499795A CN 2011103546930 A CN2011103546930 A CN 2011103546930A CN 201110354693 A CN201110354693 A CN 201110354693A CN 102499795 A CN102499795 A CN 102499795A
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- China
- Prior art keywords
- tibial plateau
- joint prosthesis
- elastic
- tibial
- knee
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- 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.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Abstract
A knee joint prosthesis with functions of the elastic meniscus comprises a thighbone component; the thighbone component comprises a tibia component; the tibia component comprises a tibial plateau and a tibial tray; an elastic part with functions of the elastic meniscus is arranged between the tibial plateau and the tibial tray and is in contact with the bottom of the tibial plateau; the elastic part can be an elastic pad; the elastic pad is matched with the space which is positioned between the tibial plateau and the tibial tray and capable of accommodating the elastic pad in shape and size; a limit post is arranged below the tibial plateau; a positioning hole is formed on the elastic pad and in a position corresponding to the limit post; and the limit post passes through the positioning hole to be fixed in a clearance fit with an inner hole of a fixing post on the tibial tray. Since the elastic material or part (namely the elastic part) is additionally arranged between the tibial plateau and the tibial tray to simulate the functions of the natural meniscus, the following effects can be achieved that the operation difficulty during operation can be reduced; a favorable buffer can be provided for the knee joint after operation; oscillation conveyed among the joints can be absorbed; abrasion can be reduced substantially; the flexion range of the knee joint can be expanded; and compared with a traditional knee joint prosthesis, the knee joint prosthesis provided by the utility model can improve physical performance of the lower limbs of a human body.
Description
Technical field
The invention belongs to technical field of medical instruments, relate to the artificial knee joint prosthesis that is used to treat diseases of knee joint.
Technical background
Human body natural walking or when doing various motion, knee joint is stressed quite big, yet; In natural knee joint inside natural meniscus is arranged, from meniscal shape and position, briefly; Meniscal function promptly is stabilized knee; Spread the knee joint load forces,, just guaranteed knee joint weight loading exercise and unlikely damage all the year round just because of the steady load effect that meniscus played.
Natural meniscus itself has good elasticity, when it still keeps elasticity when 5mm is compressed to 2.5mm.Meniscus similarly is a buffer between condyle of femur and tibial plateau, has protected the two articular surface, absorbs the concussion of passing on downwards, and especially in hyperflexion or when stretching, this effect is more obvious.When eminence is jumped off, knee has born sizable power that the health action of gravity is brought, but the cartilage of condyle of femur and tibial plateau do not sustain damage, and is because meniscal existence is dispersed to whole knee joint with this power and bears simultaneously.
At present; Rigid fully contact the between the distal femoral component of all full knee joint transposing prosthesis and the tibial component; Normally the condyle of femur of metal directly contacts with the liner that high-molecular polythene is processed; Liner also directly contacts with following metal tibia holder, thus loosening, the wearing and tearing of liner with vibrate all very serious.Though the knee-joint prosthesis that uses liner simulation natural meniscus is also arranged; But liner is just simulated natural meniscus in shape; Can only rotate, move, can not move up and down and do not have elasticity capacity perpendicular to tibia, so the real pooling feature of natural meniscus does not provide.
That is, existing knee-joint prosthesis does not have traditional meniscal pooling feature, therefore, can only rotate, move, and can not move up and down perpendicular to tibia, and user can not bring more comfortable experience.
Summary of the invention
The object of the present invention is to provide a kind of knee-joint prosthesis with elasticity meniscus function, do not have traditional meniscal pooling feature to solve existing knee-joint prosthesis, user can not bring the technical problem of more comfortable experience.
The invention provides a kind of knee-joint prosthesis with elasticity meniscus function; Comprise distal femoral component; Distal femoral component comprises tibial component; Tibial component comprises tibial plateau and tibia holder, between tibial plateau and tibia holder, is folded with the elastomeric element with elasticity meniscus function, the pig of elastomeric element and tibial plateau.
Elastomeric element has 2 to 5mm decrement.
A kind of instance: said elastomeric element is at least one spring.The below of tibial plateau is provided with a limited post, and through hole and the fixed leg endoporus matched in clearance in the tibia holder that limited post passes on the spring are fixed.
Another kind of instance: said elastomeric element is a cushion, and the shape size of said cushion and the spatial form that can be placed between tibial plateau and the tibia holder are adaptive.The below of tibial plateau is provided with a limited post, in the cushion correspondence one locating hole is set, and the fixed leg endoporus matched in clearance that limited post passes in locating hole and the tibia holder is fixed.
The present invention solves the problem that existing knee-joint prosthesis exists, and provides more near the natural knee joint performance.Through between tibial plateau and tibia holder, adding elastomeric material or parts (being elastomeric element); The function of simulation natural meniscus can reduce the operating difficulty in the art, and postoperative is that knee joint provides comfort cushioning; Absorb and close the concussion that internode is passed on; Significantly reduce wear, increase the knee sprung scope, contrast traditional knee-joint prosthesis and can improve the human body lower limbs motion function.
Description of drawings
Fig. 1 is the knee-joint prosthesis STRUCTURE DECOMPOSITION sketch map with elasticity meniscus function.
The specific embodiment
Knee-joint prosthesis provided by the invention comprises: distal femoral component (femoral prosthesis also can comprise the patella prosthese if necessary), tibial component (tibia holder, tibial plateau, tibia cushion or parts).The parts that knee-joint prosthesis comprises can be according to existing differentiation difference to some extent.In order to narrate conveniently, tibial plateau, tibia cushion or parts etc., this instance is referred to as tibial plateau.
See also Fig. 1; Between tibia holder 14, tibial plateau 12, add elastomeric element 13 with spring function; Thereby tibial plateau 12 can have elastic effect; Therefore the spring function of mimic actual natural meniscus, postoperative have better exercise performance and ruggedness more near the natural knee joint performance.
Common knee-joint prosthesis is not owing to possess the leeway of compression; So operation the time is carried out need be to the adjusting of loosening of soft tissue and ligament, and the ligament amount of loosening needs doctor's experience to decide usually, has very high uncertainty; And prosthese of the present invention is owing to have the elasticity similar with natural meniscus; Can reduce or cancel the requirement of this link, it is simpler and easy that prosthese is laid, and reduces operating difficulty.
For knee-joint prosthesis commonly used at present; No matter be fixed platform prosthese or rotation, sliding platform prosthese; Ligamentaum cruciatum conservative prosthese (CR type prosthese), posterior cruciate ligament substituted type prosthese (PS type prosthese) or hinge type knee-joint prosthesis can improve and add this spring function.
Core of the present invention is the tibial component adding spring function to knee-joint prosthesis; Current knee-joint prosthesis brand, kind are numerous; Various prostheses can add spring function through the technological means that is fit to oneself, so method, scheme are more, differ at this and one enumerate concrete solution; Below only listing a kind of product sketch map, is a kind of improvement (as shown in Figure 1) that the fixed platform knee-joint prosthesis is carried out.The polyethylene liner of fixed platform knee-joint prosthesis in the past is fixed on the tibial plateau 12, has no degree of freedom.Through improving, add cushion 13 in tibia holder 14 and 12 of tibial plateaus, compared with former fixed platform design, up and down degree of freedom is arranged.Simultaneously; Below tibial plateau 12, add a limited post; Limited post just in time can cooperate with the interporal lacuna in the tibia holder fixed leg; Limited post makes tibial plateau 12 when receiving the power of all around direction, still remain on original position, and restriction cushion 13 can only move up and down by elasticity of compression pad on tibial plateau, thereby makes knee-joint prosthesis have the elastic effect of natural meniscus.
Elastomeric element has 2 to 5mm decrement.
Elastomeric element is at least one spring.The below of tibial plateau 12 is provided with a limited post 16, and through hole and fixed leg endoporus 15 matched in clearance in the tibia holder 14 that limited post 16 passes on the spring are fixed.
Said elastomeric element is a cushion 13, and the shape size of cushion and the spatial form that can be placed between tibial plateau 12 and the tibia holder 13 are adaptive.The below of tibial plateau 13 is provided with a limited post 16, in cushion 13 correspondences one locating hole is set, and fixed leg endoporus 15 matched in clearance that limited post 16 passes in locating hole and the tibia holder are fixed.
More than disclosedly be merely preferred embodiment mode of the present invention, but the present invention is not limited thereto, the technical staff in any field can think change, all should drop in protection scope of the present invention.
Claims (6)
1. knee-joint prosthesis with elasticity meniscus function; Comprise distal femoral component; Distal femoral component comprises tibial component, it is characterized in that, tibial component comprises tibial plateau and tibia holder; Between tibial plateau and tibia holder, be folded with elastomeric element, the pig of elastomeric element and tibial plateau with elasticity meniscus function.
2. the knee-joint prosthesis with elasticity meniscus function as claimed in claim 1 is characterized in that elastomeric element has 2 to 5mm decrement.
3. the knee-joint prosthesis with elasticity meniscus function as claimed in claim 1 is characterized in that, said elastomeric element is at least one spring.
4. the knee-joint prosthesis with elasticity meniscus function as claimed in claim 1 is characterized in that, said elastomeric element is a cushion, and the shape size of said cushion and the spatial form that can be placed between tibial plateau and the tibia holder are adaptive.
5. the knee-joint prosthesis with elasticity meniscus function as claimed in claim 4; It is characterized in that; The below of tibial plateau is provided with a limited post, in the cushion correspondence one locating hole is set, and the fixed leg endoporus matched in clearance that limited post passes in locating hole and the tibia holder is fixed.
6. the knee-joint prosthesis with elasticity meniscus function as claimed in claim 1 is characterized in that the below of tibial plateau is provided with a limited post, and through hole and the fixed leg endoporus matched in clearance in the tibia holder that limited post passes on the spring are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103546930A CN102499795A (en) | 2011-11-10 | 2011-11-10 | Knee joint prosthesis with functions of elastic meniscus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103546930A CN102499795A (en) | 2011-11-10 | 2011-11-10 | Knee joint prosthesis with functions of elastic meniscus |
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| Publication Number | Publication Date |
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| CN102499795A true CN102499795A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103546930A Pending CN102499795A (en) | 2011-11-10 | 2011-11-10 | Knee joint prosthesis with functions of elastic meniscus |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490493A (en) * | 2014-12-29 | 2015-04-08 | 北京市春立正达医疗器械股份有限公司 | Knee-joint rotating platform prosthesis |
| CN104840279A (en) * | 2015-05-26 | 2015-08-19 | 北京爱康宜诚医疗器材股份有限公司 | Knee joint prosthesis |
| CN106344134A (en) * | 2016-09-26 | 2017-01-25 | 河北医科大学第三医院 | Absorbable pads for high tibial osteotomy |
| CN106726016A (en) * | 2017-03-03 | 2017-05-31 | 叶川 | A kind of knee joint prosthesis system and human synovial repair system |
| CN109106477A (en) * | 2018-09-17 | 2019-01-01 | 东营市人民医院 | Therapeutic device for tendon bone |
| WO2019007287A1 (en) * | 2017-07-03 | 2019-01-10 | 朱红文 | Hemi-condyle type artificial knee joint |
| CN109199648A (en) * | 2017-07-03 | 2019-01-15 | 天津富华医疗科技有限公司 | Artificial knee joint |
| CN109199646A (en) * | 2017-07-03 | 2019-01-15 | 天津富华医疗科技有限公司 | Adjustable spring component on artificial knee joint |
| CN109620477A (en) * | 2019-02-01 | 2019-04-16 | 北京爱康宜诚医疗器材有限公司 | Meniscus substitute and knee-joint prosthesis with it |
| CN110022798A (en) * | 2016-12-06 | 2019-07-16 | 捷迈有限公司 | Shin bone plug-in unit |
| CN111588520A (en) * | 2020-05-08 | 2020-08-28 | 天衍医疗器材有限公司 | Knee joint prosthesis |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0046926A2 (en) * | 1980-09-03 | 1982-03-10 | Waldemar Link (GmbH & Co.) | Knee joint endoprosthesis |
| WO1994009724A1 (en) * | 1992-04-20 | 1994-05-11 | Orthopaedic Research Institute | Prosthesis with low stiffness factor |
| CN2579375Y (en) * | 2002-11-15 | 2003-10-15 | 黄国富 | Buffer combined embedding type knee joint |
| WO2004024037A1 (en) * | 2002-09-10 | 2004-03-25 | Ferree Bret A | Shock-absorbing joint and spine replacements |
| US20050192674A1 (en) * | 1999-10-08 | 2005-09-01 | Ferree Bret A. | Prosthetic joints with contained compressible resilient members |
| WO2010023062A2 (en) * | 2008-09-01 | 2010-03-04 | Mmk Consulting Gmbh | Trial prosthesis for total knee arthroplasty |
| CN101879099A (en) * | 2009-05-07 | 2010-11-10 | 德普伊(爱尔兰)有限公司 | Anterior stabilized knee implant |
| US20110035018A1 (en) * | 2007-09-25 | 2011-02-10 | Depuy Products, Inc. | Prosthesis with composite component |
| US20110087333A1 (en) * | 2006-11-07 | 2011-04-14 | Kellar Franz W | Prosthetic knee joint |
-
2011
- 2011-11-10 CN CN2011103546930A patent/CN102499795A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0046926A2 (en) * | 1980-09-03 | 1982-03-10 | Waldemar Link (GmbH & Co.) | Knee joint endoprosthesis |
| WO1994009724A1 (en) * | 1992-04-20 | 1994-05-11 | Orthopaedic Research Institute | Prosthesis with low stiffness factor |
| US20050192674A1 (en) * | 1999-10-08 | 2005-09-01 | Ferree Bret A. | Prosthetic joints with contained compressible resilient members |
| WO2004024037A1 (en) * | 2002-09-10 | 2004-03-25 | Ferree Bret A | Shock-absorbing joint and spine replacements |
| CN2579375Y (en) * | 2002-11-15 | 2003-10-15 | 黄国富 | Buffer combined embedding type knee joint |
| US20110087333A1 (en) * | 2006-11-07 | 2011-04-14 | Kellar Franz W | Prosthetic knee joint |
| US20110035018A1 (en) * | 2007-09-25 | 2011-02-10 | Depuy Products, Inc. | Prosthesis with composite component |
| WO2010023062A2 (en) * | 2008-09-01 | 2010-03-04 | Mmk Consulting Gmbh | Trial prosthesis for total knee arthroplasty |
| CN101879099A (en) * | 2009-05-07 | 2010-11-10 | 德普伊(爱尔兰)有限公司 | Anterior stabilized knee implant |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490493A (en) * | 2014-12-29 | 2015-04-08 | 北京市春立正达医疗器械股份有限公司 | Knee-joint rotating platform prosthesis |
| CN104840279A (en) * | 2015-05-26 | 2015-08-19 | 北京爱康宜诚医疗器材股份有限公司 | Knee joint prosthesis |
| CN106344134A (en) * | 2016-09-26 | 2017-01-25 | 河北医科大学第三医院 | Absorbable pads for high tibial osteotomy |
| CN110022798A (en) * | 2016-12-06 | 2019-07-16 | 捷迈有限公司 | Shin bone plug-in unit |
| CN106726016A (en) * | 2017-03-03 | 2017-05-31 | 叶川 | A kind of knee joint prosthesis system and human synovial repair system |
| WO2019007287A1 (en) * | 2017-07-03 | 2019-01-10 | 朱红文 | Hemi-condyle type artificial knee joint |
| CN109199648A (en) * | 2017-07-03 | 2019-01-15 | 天津富华医疗科技有限公司 | Artificial knee joint |
| CN109199646A (en) * | 2017-07-03 | 2019-01-15 | 天津富华医疗科技有限公司 | Adjustable spring component on artificial knee joint |
| CN109106477A (en) * | 2018-09-17 | 2019-01-01 | 东营市人民医院 | Therapeutic device for tendon bone |
| CN109620477A (en) * | 2019-02-01 | 2019-04-16 | 北京爱康宜诚医疗器材有限公司 | Meniscus substitute and knee-joint prosthesis with it |
| CN109620477B (en) * | 2019-02-01 | 2024-04-02 | 北京爱康宜诚医疗器材有限公司 | Meniscus substitute and knee joint prosthesis with same |
| CN111588520A (en) * | 2020-05-08 | 2020-08-28 | 天衍医疗器材有限公司 | Knee joint prosthesis |
| CN111588520B (en) * | 2020-05-08 | 2021-08-03 | 天衍医疗器材有限公司 | Knee joint prosthesis |
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Application publication date: 20120620 |