CN101972178A - Magnetic suspension artificial knee joint - Google Patents
Magnetic suspension artificial knee joint Download PDFInfo
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- CN101972178A CN101972178A CN 201010559938 CN201010559938A CN101972178A CN 101972178 A CN101972178 A CN 101972178A CN 201010559938 CN201010559938 CN 201010559938 CN 201010559938 A CN201010559938 A CN 201010559938A CN 101972178 A CN101972178 A CN 101972178A
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- prosthesis
- knee joint
- artificial knee
- magnetic suspension
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Abstract
The invention discloses a magnetic suspension artificial knee joint comprising a femur prosthesis and a tibia prosthesis, wherein a connecting slot is arranged on the femur prosthesis; a connecting column is arranged on the tibia prosthesis; the femur prosthesis and the tibia prosthesis are connected in an up and down mode through a semi-hinge structure formed by the connecting column and the connecting slot; two rows of inlaid holes are arranged on the femur prosthesis and the tibia prosthesis; magnetic steel is inlaid in the inlaid holes; the polarity on the lower end of the magnetic steel arranged on the femur prosthesis and the polarity on the upper end of the magnetic steel arranged on the tibia prosthesis are the same, and the same polarities are guaranteed to mutually repel. The surface of the magnetic suspension artificial knee joint is covered with a smooth and wearable surface layer material to be implanted into a human body when being applied. The magnetic suspension artificial knee joint has the advantages of high feasibility, good effect, and clinical popularization and use suggestion.
Description
Technical field
The present invention relates to a kind of magnetic suspension artificial knee joint.
Background technology
Osteoarthritis has another name called degenerated arthrosis, hyperplastic osteoarthritis, is a kind of chronic joint disease, and main the change is the degeneration and the Secondary cases hyperosteogeny of articular cartilage face, and main the realization is arthralgia and movable ineffective.The X line is cashed to the joint space narrows down, subchondral bone densification, bone trabecula fracture, have and harden and there is lip shape hypertrophy at edge, cystis degeneration joint, the disconnected distortion of bone then appears in the later stage, articular surface is uneven, and the intraarticular cartilage strips off, the cracked joint that enters of sclerotin forms joint bodies.Osteoarthritis is the frequently-occurring disease of middle-aged and elderly people, and kneed osteoarthritis sickness rate is that crowd's prevalence is the one of the main reasons that causes the mid-aged population functional disability up to 78.5% more than 9.65%, 60 years old in the population of China.Primary disease increases the weight of gradually with the growth at age, and early stage expectant treatment all can not stop spreading of the state of an illness effectively, and the unique effective treatment means of end-stage patients is exactly an artificial knee joint replacement.Carry out the artificial knee replacement surgery every year in the U.S. and reach more than 200,000 examples, China is owing to the reason quantity of economic dispatch aspect is obviously on the low side, but every year is also more than ten thousand examples.
At present, the progress of artificial knee joint is as follows:
The forties in 20th century, Campbell etc. at first designed a kind of metal prostheses, because weak curative effect fails to promote.
The 1950's, Wallidus etc. designed the restricted knee-joint prosthesis of hinge type, and because of possessing self stability, short term effect is better, but long-term loosening rate height.
After the 6's of 20th century Gunston had invented oversensitive type prosthese, modern artificial kneed history really began.
In 70 generations of 20th century, invented full condyle type prosthese, and curative effect is fairly obvious, is widely used, and become " standard " of weighing other various surface type artificial complete knee joint prostheses.
The eighties in 20th century, China began the artificial knee replacement surgery.
In decades, along with articular prosthesis material design and installation technology is perfect more, the modernization of operation technique technology, operating theater instruments, anaesthesia technology, aseptic technique, the surgical effect of artificial joint is greatly enhanced.Artificial knee replacement surgery's art has become the effective and the most reliable method of the serious joint disease of internationally recognized processing now.In the world, have every year the patient above 1,000,000 to accept artificial locking technique art, success rate reaches more than 90%.China since the seventies in 20th century development and the clinical practice of artificial knee joint. along with the raising of medical skill and people's living standard, people have had darker understanding to the artificial knee joint replacement technology, have also obtained clinically widely using.
Effort through the several generations people improves, and present artificial knee joint is with comparative maturity, and it mainly is made up of femoral prosthesis, polyethylene pad and tibial prosthesis (from top to bottom), as shown in Figure 1.Femoral prosthesis and tibial prosthesis be respectively by bone cement and femur and tibia strong bonded, and the function of the polyethylene pad between two prostheses is exactly to alleviate the friction of prosthese and the service life of final decision artificial knee joint.
From above introduction as can be seen, the factor that influences artificial knee joint service life mainly is the wearing and tearing in joint and loosening, and the tissue reaction that the microgranule that wearing and tearing are produced can cause Periprosthetic is the main cause that causes prosthetic loosening.In view of this, if can reduce the wear rate between the knee-joint prosthesis knee joint then can prolong kneed service life widely.For a long time, just how to solve the wear problem of artificial knee joint, scientists has been carried out a lot of explorations.As, update the prosthetic surface treatment process and reduce frictional force; The material that changes metal alloy increases wear resistence; Quote high-abrasive material such as pottery etc.; Add with filling or the like with lubricating fluid between high molecular abrasion-proof pad such as polyethylene and the prosthese.Above method all in various degree reduction the frictional force of artificial knee joint, increased its anti-wear performance, prolonged the service life of artificial knee joint greatly.But because there are some limitation objectively in they, the general status that makes artificial knee joint use is unsatisfactory.Present high-quality artificial knee joint is still shorter service life, does not wait average about 15 years from 10 years by 20 years.
The electromagnetic suspension technology is that the eddy current that utilizes the electromagnetic field of high frequency to produce in the metal surface is realized the suspension to Metal Ball.Magnetic levitation technology has used ON TRAINS, utilizes the Magnet principle of " same sex is repelled each other, and there is a natural attraction between the sexes ", allow Magnet have gravitational ability of resistance, car body is de-orbited fully, be suspended in apart from the about centimeters of track, ride on air has been created the flight miracle that is close to " zero elevation ".Three types magnetic suspension is arranged at present in the world.The one, be the normal conduction formula magnetic suspension of representative with Germany, the 2nd, be that the superconduction of representative is electrically driven, magnetically levitated with Japan, these two kinds of magnetic suspension all need to produce magnetic suspension power with electric power.And the third is exactly the permanent magnet suspension of China, and it utilizes special permanent magnet material, supports without any need for other power.At present, magnetic levitation technology not only is applied to train, has invented the low-frictional force magnetic suspension bearing industrial people, also come out at magnetic suspension manual heart medically, and be fully possible so magnetic levitation technology is applied to artificial knee joint.Magnetic levitation technology is not applied to the relevant report and the research of artificial knee joint at present.
Summary of the invention
At above-mentioned prior art, the invention provides a kind of magnetic suspension artificial knee joint, the present invention utilizes magnetic levitation technology, avoids or reduces contacting between femoral prosthesis and the tibial prosthesis, eliminating the friction between the prosthese, is a kind of long-life artificial knee joint that does not have friction or low friction.
The present invention is achieved through the following technical solutions:
A kind of magnetic suspension artificial knee joint comprises femoral prosthesis and tibial prosthesis, and wherein, femoral prosthesis is provided with link slot, and tibial prosthesis is provided with joint pin, and femoral prosthesis is connected up and down with half hinge arrangement that link slot forms by joint pin with tibial prosthesis; Be equipped with two row's inlaid holes on femoral prosthesis and the tibial prosthesis, be inlaid with magnet steel in the inlaid hole; The polarity of the magnet steel upper end on the polarity of the magnet steel lower end on the femoral prosthesis and the tibial prosthesis is identical, guarantees that its same sex repels each other.
Described inlaid hole is cylinder type, and magnet steel is column type.
During application, smooth attrition resistant skin-material on magnetic suspension artificial knee joint surface coverage of the present invention, implant into body gets final product then.
The present invention utilizes magnetic levitation technology to make and does not directly contact between femoral prosthesis and the tibial prosthesis, has eliminated the friction between the prosthese, thereby has made improve greatly its service life.
Perhaps, people can worry: can bring harm to human body after having the prosthese implant into body of high-intensity magnetic field, but invention of the present invention thinks for it is feasible, the reasons are as follows:
1. magnetic field extensively is present in nature.The earth itself that we live is exactly the big magnet with N, two utmost points of S, and its magnetic field is the biological growth of influence not only, and in the universe unique life hatchery and biological paradise known to becoming at present to make it on the contrary.Just because of its magnetic field protection, just avoided a large amount of ionizing radiation from the sun, make the biology that grows in above it be grown and breed, and its magnetic field still is the good tool of many animal orientation, flight and migration.China ancients find and have used the magnetic field of the earth just and just invented compass, thereby the naval technology in the world has been made huge contribution.
2. magnetic field is in diagnosis that medically is widely used in disease and treatment.Medically Chang Yong magnetic resonance scanner is exactly to have the very instrument of high-intensity magnetic field.Its magnetic field intensity can reach 3.0 teslas.This device is applied to clinical diagnosis, and a bout of illness in the finder soma becomes clearly.Its application not only can not damage human body, has made very big contribution for people's health on the contrary.
In addition, also there is performance out of the ordinary in magnetic field in treatment of diseases, it is found that there is good facilitation in magnetic field to the growth of tissue healing, thereby has invented magnet therapeutic apparatus, is used to fracture to promote the healing of fracturing; Be used for the effect that soft tissue injury can play reducing swelling and alleviating pain, relaxing muscles and tendons to promote blood circulation.
3. existing in the world a lot of bar magnetic suspension trains are in operation, and they itself have huge magnetic field, facts have proved that it can not produce infringement to human body.
4. magnetic suspension manual heart comes out, and illustrates that the magnetic field implant into body has precedent.Moreover artificial heart is the core position of implant into body, circumstantial evidence implant the feasibility of the magnetic suspension artificial knee joint at non-core position.
To sum up, magnetic suspension artificial knee joint feasibility height of the present invention, effective, the suggestion clinical expansion uses.
Description of drawings
Fig. 1 is an artificial knee joint sketch map of the prior art (photo);
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the structural representation of femoral prosthesis of the present invention;
Fig. 4 is the structural representation of tibial prosthesis of the present invention;
Fig. 5 is structural representation of the present invention (photo);
Fig. 6 is the structural representation (photo) of femoral prosthesis of the present invention;
Fig. 7 is the structural representation (photo) of tibial prosthesis of the present invention;
Fig. 8 is result of use figure of the present invention (photo);
Fig. 9 is the rearview (photo) of Fig. 8.
Wherein, 1, femoral prosthesis; 2, tibial prosthesis; 3, link slot; 4, joint pin; 5, inlaid hole; 6, magnet steel.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing.
A kind of magnetic suspension artificial knee joint, comprise femoral prosthesis 1 and tibial prosthesis 2, as Fig. 2, Fig. 3, shown in Figure 4, wherein, femoral prosthesis 1 is provided with link slot 3, tibial prosthesis 2 is provided with joint pin 4, and femoral prosthesis 1 is connected up and down with half hinge arrangement that link slot 4 forms by joint pin 3 with tibial prosthesis 2; Be equipped with two row's inlaid holes 5 on femoral prosthesis 1 and the tibial prosthesis 2, be inlaid with magnet steel 6 in the inlaid hole 5; The polarity of magnet steel 6 upper ends on the polarity of magnet steel 6 lower ends on the femoral prosthesis 1 and the tibial prosthesis 2 is identical, guarantees that its same sex repels each other.
Described inlaid hole 5 is cylinder type, and magnet steel 6 is column type.
During application, smooth attrition resistant skin-material on magnetic suspension artificial knee joint surface coverage of the present invention, implant into body gets final product then.The concrete photo of using such as Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9.
Claims (2)
1. magnetic suspension artificial knee joint, comprise femoral prosthesis and tibial prosthesis, it is characterized in that: described femoral prosthesis is provided with link slot, and tibial prosthesis is provided with joint pin, and femoral prosthesis is connected up and down with half hinge arrangement that link slot forms by joint pin with tibial prosthesis; Be equipped with two row's inlaid holes on femoral prosthesis and the tibial prosthesis, be inlaid with magnet steel in the inlaid hole; The polarity of the magnet steel upper end on the polarity of the magnet steel lower end on the femoral prosthesis and the tibial prosthesis is identical.
2. a kind of magnetic suspension artificial knee joint according to claim 1, it is characterized in that: described inlaid hole is cylinder type, and magnet steel is column type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010559938 CN101972178A (en) | 2010-11-25 | 2010-11-25 | Magnetic suspension artificial knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010559938 CN101972178A (en) | 2010-11-25 | 2010-11-25 | Magnetic suspension artificial knee joint |
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| CN101972178A true CN101972178A (en) | 2011-02-16 |
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| CN 201010559938 Pending CN101972178A (en) | 2010-11-25 | 2010-11-25 | Magnetic suspension artificial knee joint |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888021A (en) * | 1988-02-02 | 1989-12-19 | Joint Medical Products Corporation | Knee and patellar prosthesis |
| WO1997030661A1 (en) * | 1996-02-21 | 1997-08-28 | Smith & Nephew Inc. | Trial wedges with magnetic attachments |
| WO2002067811A2 (en) * | 2001-01-16 | 2002-09-06 | Hyde Edward R Jr | Prostheses and instrumentation for joint replacement and repair |
| WO2006121652A2 (en) * | 2005-05-06 | 2006-11-16 | Hyde Edward Jr | Magnetic vector control system for joints |
| CN201481594U (en) * | 2009-07-04 | 2010-05-26 | 戴闽 | Magnetic suspension artificial joint |
| CN201870774U (en) * | 2010-11-25 | 2011-06-22 | 高若云 | Magnetic suspension artificial knee joint |
-
2010
- 2010-11-25 CN CN 201010559938 patent/CN101972178A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4888021A (en) * | 1988-02-02 | 1989-12-19 | Joint Medical Products Corporation | Knee and patellar prosthesis |
| WO1997030661A1 (en) * | 1996-02-21 | 1997-08-28 | Smith & Nephew Inc. | Trial wedges with magnetic attachments |
| WO2002067811A2 (en) * | 2001-01-16 | 2002-09-06 | Hyde Edward R Jr | Prostheses and instrumentation for joint replacement and repair |
| WO2006121652A2 (en) * | 2005-05-06 | 2006-11-16 | Hyde Edward Jr | Magnetic vector control system for joints |
| CN201481594U (en) * | 2009-07-04 | 2010-05-26 | 戴闽 | Magnetic suspension artificial joint |
| CN201870774U (en) * | 2010-11-25 | 2011-06-22 | 高若云 | Magnetic suspension artificial knee joint |
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Application publication date: 20110216 |