CN2681706Y

CN2681706Y - Artificial joint prosthesis of patella-femur joint

Info

Publication number: CN2681706Y
Application number: CN 200420006915
Authority: CN
Inventors: 张翀; 张文涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-09
Filing date: 2004-03-09
Publication date: 2005-03-02
Anticipated expiration: 2014-03-09

Abstract

The utility model relates to an artificial joint prosthesis of patella-femur joint used in the knee joint, comprising a patella surface prosthesis and a femur trochlea joint surface prosthesis; wherein, the top part is the spherical pyramidal mushroom-shaped patella joint prosthesis, a circular arc is provided as the transition between the pyramidal surface and the circumference edge, an equal cylinder body is arranged below the circumference edge, and a column connected with the osteoid is arranged under the cylinder body. The femur trochlea joint surface prosthesis collocated with the patella surface prosthesis is in the shape of integrative double sledge plates; the single plate of the femur trochlea joint surface prosthesis is in the shape of a convex arc, and a concave arc is provided as the smooth transmission between the plates with the external side plate provided broad and thick and the internal side plate provided narrow and thin; a flat face is provided as the lower face of the plate with the two external sides of the plate bending upwards, and the rear plate is connected with the lower rotation angle, so that the artificial joint prosthesis of patella-femur joint is composed. The patella joint prosthesis can also present the shape of an ellipse in top view, the upper top of the short shaft is in the shape of a spherical pyramid, and the lower part of the prosthesis is in the shape of a reverse 'V'; the patella joint prosthesis integrally presents an exponential declining impulse image in right front view and is matched with the trochlea prosthesis with the femur bending upwards. The utility model is used for the joint replacement in curing the pathologic change and damage of knee joint patellar chondromalacia, osteoarthritis of the patella femur joint, etc. , filling up the blank of displacement therapy of the patella-femur joint.

Description

Kneecap-femoral joint artificial joint prosthesis

Technical field

This utility model relates to a kind of orthopaedics and replaces kneed artificial joint prosthesis, specifically kneecap-joint artificial joint prosthesis.

Background technology

In the prior art, artificial prosthesis is one of metathetical important measures of clinical treatment, and artificial joint prosthesis is that metathetical key is carried out in the change of treatment joint damage sexually transmitted disease (STD), and at present, shoulder, elbow, knee joint and ankle joint all have the artificial prosthesis user.

Human knee joint is made of inboard shin-femoral joint, outside shin-femoral joint and kneecap-femoral joint three parts.In artificial knee joint, two kinds of existing complete knee joint and single ankle joint, complete knee joint is used for knee joint three part pathological changes, and single ankle joint is used for shin-femoral joint pathological changes, technology maturation, curative effect is sure, but also is not specifically designed to the prosthese of kneecap-femoral joint now both at home and abroad.

Summary of the invention

The purpose of this utility model is at the knee joint chondromalacia patella, the arthralgia that pathological changes such as patellofemoral joint osteoarthritis cause, and can carry out metathetical kneecap-joint artificial joint prosthesis to it for a kind of.

Task of the present utility model is achieved in that a kind of kneecap-femoral joint artificial joint prosthesis, it is characterized in that: artificial joint prosthesis is to be made of patella surface prosthesis and femur trochoid surface prosthesis, wherein:

The patella articular prosthesis of A, mushroom-shaped is overlooked and is that circle, top are the sphere cone-shaped, mushroom capitiform 1, cone profile and following peripheral are the arc transition switchings, periphery down for and the cylinder 2 of its circle such as grade, the fixedly pillar 3 that links sclerotin is arranged on the lower surface of cylinder 2; Being mated used femoral joint prosthese is femur coaster prosthese, its shape is like large and small differing, but for slightly being the two skiing board that are same as one, be that flat plane 7 and corner thereof connect back seesaw 8 below this plate, being outer panel 4, the interior plate 6 that has the convex face above the veneer, is with the switching of cancave cambered surface 5 rounding ofves, outer panel 4 thicker and face widths between the inside and outside side plate, and interior plate 6 is thin and the convex face is narrower, is useful on the fixedly pillar 3 that connects sclerotin on lower plane 7.Finish mushroom-shaped patella prosthese and femur coaster prosthese thus, the kneecap of phase configuration-femoral joint artificial joint prosthesis.

B, patella articular prosthesis also can be waveform, overlook slightly ovalize, facing minor axis center upper top is sphere cone-shaped 9, along the level and smooth declivity in major axis both sides, back curved arc upwarps, and its curved arc is slightly to be at the semiaxis middle part to have the circular shallow low-lying area that cuts an arch surface to cheat (slightly being " D ") shape; The going to the bottom of patella articular prosthesis, be that middle branch slightly is " Λ " shape face 10 with minor axis, whole observation waveform kneecap joint artificial prosthesis is exponential damping pulse image, and there is the fixedly stake 3 that connects sclerotin its underpart.

With patella articular prosthesis in wave shape, make the femur rake angle coaster prosthese of corresponding configuration, in the outside of the two skiing board of likeness in form one, change with inside and

outside side plate

4,6 that to connect concave arcs 5 facial positions be benchmark, upwards respectively change an angle, the last gyration α of outer panel 4 ₁Last gyration α greater than interior plate 6 ₂, i.e. α ₁＞α ₂, and lower plane 7 connects back seesaw 8 with the circular arc rounding off, and the fixedly pillar 3 that connects sclerotin is arranged at lower plane 7 bottoms.

Above-mentioned kneecap-femoral joint artificial joint prosthesis adopts high-molecular polythene and titanium alloy material to make.

This utility model filled up internal and international on, still be not specifically designed to the blank of kneecap-femoral joint artificial joint prosthesis, remedied knee prosthesis artificial joint prosthesis shortcoming.

Description of drawings

Below in conjunction with accompanying drawing this utility model is further described.

Fig. 1 is the patella articular prosthesis figure that this utility model slightly is the capitiform of pestering.

Fig. 2 is the femur coaster prosthese figure with Fig. 1 phase configuration.

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the A-A cutaway view of Fig. 3.

Fig. 5 is the vertical view of waveform patella articular prosthesis figure.

Fig. 6 is the B-B cutaway view of Fig. 5.

Fig. 7 is the femur rake angle coaster prosthese figure with Fig. 5,6 phase configuration.

Fig. 8 is the C-C cutaway view of Fig. 7.

Among the figure: 1. on behalf of cylinder 3., representative mushroom capitiform 2. represent pillar 4. to represent outer panel 5. to represent concave arc 6. to represent interior plate 7. to represent lower plane 8. to represent back seesaw 9. to represent sphere cone-shaped 10. representative " Λ " shape faces

The specific embodiment

Referring to Fig. 1-8, a kind of kneecap-femoral joint artificial joint prosthesis, this prosthese is made up of patella surface prosthesis and femur trochoid surface prosthesis two parts, has adopted high-molecular polythene and titanium alloy material to make.The patella articular prosthesis of mushroom capitiform 1, bow and regard it as circle, its top is the sphere cone-shaped, slightly be mushroom capitiform 1, the periphery that cone-shaped basifacial is overlooked with it to circle is the arc transition switching, the bottom of periphery is and the cylinder 2 of circle such as its grade, and four pillars 3 that link sclerotin are arranged on the below end face of cylinder 2, its long and short can be different and lower end be shaped on groove.With patella articular prosthesis, the phase configuration of mushroom capitiform 1 be femur coaster prosthese, be the large and small difference of its shape but be linked as whole two skiing board; Be that flat face 7 rake angles change even back seesaw 8 below the patella articular prosthesis plate, be with 5 rounding off switchings of concave arc between outer panel 4 and the interior plate 6, the convex face on outer panel 4 tops is high (thick) and face widths, and convex face on interior plate 6 tops low (approaching) and face are narrow; Have and banded four pillars 3 of sclerotin below the simultaneously straight plane 7.By the patella articular prosthesis of mushroom capitiform 1, configuration femur coaster prosthese constitutes kneecap-femoral joint artificial joint prosthesis.This prosthese is to adopt high-molecular polythene and titanium alloy material to make.During use, after the patella face excision with the disease damage, punch on patella, adopt the pillar 3 under the medical cement cementation patella articular prosthesis 1, its underpart groove has strengthened connection sclerotin intensity, after the femur trochlear surface excision of again disease being decreased, on femur, punch, pillar 3 is inserted in the hole, adopt the stake 11 under the medical cement cementation femoral hip joint prosthesis 4, with its underpart groove coagulation force, strengthened the intensity of prosthese connection sclerotin.

Waveform patella articular prosthesis can be made into, overlook it and be approximately oval, minor axis top is to be made of sphere cone-shaped 9, along the level and smooth declivity in major axis both sides, back curved arc upwarps, its curved arc is slightly to be to have cut an arch surface circular shallow hollow cheat (slightly being " D ") shape at semiaxis middle part, and declivity has the arc round pool in shallow low-lying area along major axis at 1/4 place, is " Λ " shape face below the prosthese.The femur coaster prosthese that is disposed, linking concave arc 5 slick and sly switchings place with inside and

outside side plate

6,4 with it is starting point, upwarps corner, its outer panel 4 upwarps corner α ₁, upwarp corner α greater than interior plate 6 ₂And becoming femur coaster rake angle prosthese, its lower plane 7 cooperates also to constitute kneecap one femoral joint artificial joint prosthesis with circular arc switching back seesaw 8 thus.This utility model has filled up internal and international and has gone up, still has not been specifically designed at present blank in the displacement knee joint, kneecap-femoral joint artificial joint prosthesis.

Claims

1, a kind of kneecap-femoral joint artificial joint prosthesis, it is characterized in that: artificial prosthesis is to be made of patella surface prosthesis and femur trochoid surface prosthesis, the patella articular prosthesis of mushroom-shaped wherein, overlook and be circle, top is mushroom capitiform (1) for the sphere cone-shaped, cone profile and following peripheral are the arc transition switchings, and periphery for the cylinder (2) round with its grade, has the fixedly pillar (3) that connects sclerotin down on the lower surface of cylinder (2); Being mated used osteoarthrosis prosthese is femur coaster prosthese, its shape differs but for slightly being the two skiing board that are same as one like large and small, be that seesaw (8) was outer panel (4), the interior plate (6) that has the convex face above the plate after flat plane (7) and corner thereof connected below this plate, be to transfer between the inside and outside side plate with concave arc (5) face rounding off, thicker and the face width of outer panel (7), and interior plate (6) is thin and the convex face is narrower, is useful on the fixedly pillar (3) that connects sclerotin on lower plane (7);

2, a kind of kneecap according to claim 1-joint artificial joint prosthesis, it is characterized in that: overlooking of waveform patella articular prosthesis is ellipse, facing minor axis center upper top is sphere cone-shaped (9), along the level and smooth declivity in major axis both sides, back curved arc upwarps, slightly being at the semiaxis middle part has the circular shallow low-lying area that cuts an arch surface to cheat, prosthese to go to the bottom with minor axis be that middle branch slightly is " Λ " shape (10), whole kneecap joint artificial prosthesis is exponential damping pulse image, and there is the fixedly pillar (3) that connects sclerotin its underpart; With slightly be exponential damping pulse image patella articular prosthesis, what make corresponding configuration is femur rake angle coaster prosthese, the outside in the two skiing board of likeness in form one, connecting the facial position of concave arc (5) with the commentaries on classics between inside and outside side plate (4), (6) is benchmark, upwards respectively change an angle, the last gyration α of outer panel (4) ₁Last gyration α greater than interior plate (6) ₂, i.e. α ₁＞α ₂, and following plane (7) have the fixedly pillar (3) that connects sclerotin with circular arc rounding off connection back seesaw (8) under plane (7).

3, a kind of kneecap according to claim 1 and 2-joint artificial joint prosthesis is characterized in that: kneecap-femoral joint artificial joint prosthesis, adopt high-molecular polythene and titanium alloy material to make.