CN2863017Y - Composition type multi-function artificial acetabulum cup - Google Patents

Abstract

A compound multi-functional artificial acetabulum cup is provided belonging to the technical field of artificial human body parts, which comprises an acetabulum reconstruction cup and a bone deficiency reconstruction cup. Inner lining (1) of the two cups is in a ball-hood structure, and inner lining (2) is in an octagonal structure. Their cup shells are all in semicircle shape. Fixed wings (4) are respectively arranged below circle track of the cup shell (5). Screw holes are provided on the fixed wings (4). The cup and the artificial femoral head will form a plug-socket structure, so that two thirds of the artificial femoral head can be sleeved. The disjointing prevention effect is good and it has the function of transmitting force.

Description

Multifunctional assembled manual acetabulum cup

Technical field

This utility model relate to pelvic tumor and invade and the metastatic carcinoma of pelvis by wide excision after, carry out the artificial prosthesis of defect and restore, specifically a kind ofly be used for the pelvis acetabular bone and with the multifunctional assembled manual acetabulum cup of the defect and restore of upper part.

Background technology

Human pelvis is to be made of left and right sides hipbone, rumpbone, coccyx and affiliated ligament.Hip joint is the significant points that pelvis is connected with lower limb, is made up of acetabular bone and femoral head.Wherein acetabular bone is to be made of ilium, pubis and body of ischium, and central authorities get deeply stuck in, and claims acetabular fossa (seeing 9 among Fig. 8); Around the nest semicircular articular surface arranged, claims lunate surface (seeing 10 among Fig. 8), the acetabular bone below for acetabular notch (seeing 11 among Fig. 8) on anatomy, acetabular bone is not contour at the incisura of pubis and ischium side, elevation differs some values.The function of acetabular bone is to guarantee that femoral head rotates on three-dimensional, finishes physiological activities such as upright, capable, race.

Because pelvis is the flat bone group of human body maximum, contain a large amount of spongy bone, and by the bone marrow filling, so marrow sexual cell pathological changes and metastatic carcinoma are invaded very easily and pelvis.Statistics shows that a considerable amount of malignant tumor and metastatic carcinoma occur in pelvis.The existence of a large amount of soft tissues around the pelvis simultaneously causes the early symptom of pelvic tumor few and be easy to hiddenly, manyly when making a definite diagnosis forms the enclosed mass of significant volume to break through inside and outside hone lamella, and pelvis has been caused heavy damage.Rely on chemotherapy, radiotherapy long-term control large volume tumor effectively separately, therefore both at home and abroad pelvic tumor is generally taked based on the excision of surgical operation popularity, chemotherapy, radiotherapy, Chinese medicine are the comprehensive treatment of assisting.The excision of surgery popularity should be excised tumor bone section, the normal bone around excising again, thus cause bone damaged.From humanitarian angle, be badly in need of implementing the operation of acetabular bone defect and restore in the cut back of tumor bone.

The hip joint reconstructing device generally is made up of two parts at present, and the one, the manual acetabulum prosthese also claims acetabular cup; The 2nd, artificial femoral head prosthesis and handle.Acetabular cup both domestic and external is semicircle shape.Facts have proved that the acetabular cup of this kind shape exists following defective and deficiency after the human body interplantation:

Improper if the angle of the lower boundary of acetabular cup and handle is selected during interplantation, patient's postoperative is in carrying out physiological activity, and femoral head prosthesis easily dislocates.

Owing under the situation of acetabular bone complete resection, have certain space between cup lower limits and pubis and the ischium, or partly keeping under the situation of bottom acetabular bone, because of being difficult for adopting physical method enforcement and pubis, ischium, fixes by semicircle cup, therefore acetabular cup very easily is shifted under the effect of power, even the phenomenon of pelvic organs takes place to stimulate.

When acetabular bone top, when needing defect and restore, then must use be connected and fixed (spring attentions and reaches company's product) that auxiliary part could be realized acetabular cup and pubis, ischium again as ilium.The greatest drawback of this product is that acetabular cup is two hollow cylinders with top being connected of member of reconstruction, there is no self-locking mechanism, only depends on screw and top to keep bone and fixes.Thereby on attachment screw, produce stress concentration, and, cause screw to rupture reconstruction failure because of undercapacity because of the rotation of hollow cylinder produces torsion.

Summary of the invention

The technical problems to be solved in the utility model is at the deficiencies in the prior art, provides a kind of and is connected firmly, and does not dislocate, non-wiping multifunctional assembled manual acetabulum cup.

The technical scheme that solves the problems of the technologies described above is: a kind of multifunctional assembled manual acetabulum cup, form by acetabulum reconstruction cup and defect and restore cup, its structural feature is, described two glasss liner 1 is a spherical cap-shaped structure, liner 2 is octagonal structures, their cup shell is semicircle, is provided with on two fixed-wings, 4, two fixed-wings 4 below edge cup shell 5 circle tracks and is equipped with screw.

After adopting technique scheme, compared with prior art, this utility model and artificial thigh bone are formed plug-socket structure, have the following advantages:

1, anti-dislocation is effective.Spherical liner and octagonal liner can be wrapped up in 2/3 artificial femur headgear, and the angle of liner 2 lower edges and cup shell lower edge and horizontal plane, have guaranteed that on geometry artificial thigh bone can not break away from acetabular cup, have anti-dislocation effect.

2, has the function of bearing and transmit power.Because this utility model is connected with reservation bones such as screw and pubis and ischiums, and having carried out helping the micropore spraying that soft tissue is grown on cup shell surface, this physics and the mode that is connected and fixed that bioanalysis combines extremely help the present invention and keep the stable of bone on every side and be connected.The trend of screw is parallel with the direction of pubis, ischium conductance again or crossing with acute angle in design simultaneously, has avoided failure by shear, has the effect of equilibrium stress.Be connected firmly so this device is existing, the characteristics that can be shifted do not have the function of bearing and transmit stress again.

3, has multiple function.Because the present invention forms by two glasss, has the multiple use of hip joint reconstruction and the damaged reconstruction of ilium.

Description of drawings

Fig. 1 is the acetabular cup structural representation that is used for acetabulum reconstruction.

Fig. 2 is the acetabular cup structural representation that is used for acetabular bone and top defect and restore thereof.

Fig. 3 is an acetabular cup cup shell-side view.

Fig. 4 is the vertical view at acetabular cup cup shell bottom opening place.

Fig. 5 is the vertical view of octagonal liner.

Fig. 6 is that the I-I of Fig. 5 is to generalized section.

Fig. 7 is the structural representation of spherical liner.

Fig. 8 is the front view of left side half pelvis.

Fig. 9 is the outer side view of left side half pelvis.

Figure 10 is the assembly drawing of multifunction manual acetabular cup and artificial thigh bone and handle.

Among the figure, liner 1,2 connects screw 3, fixed-wing 4, cup shell 5, adapter sleeve 6, screw 7, nut 8, acetabular fossa 9, lunate surface 10, acetabular notch 11, ilium 12, rumpbone 13, femoral head 11, handle 15, groove 16.

The specific embodiment

Below in conjunction with the drawings and the specific embodiments this utility model is further described.

Referring to Fig. 8 and Fig. 9, the pelvis acetabular bone is to be made of acetabular fossa 9, lunate surface 10, is acetabular notch 11 below them, and the top is an ilium 12.The health that acetabular bone not only bears by rumpbone 13, ilium 12 conduction bears a heavy burden, and also power will be conducted to lower limb when standing, and passes to ischium during the seat, also will bear the tension force of pubis simultaneously.According to these characteristics, acetabulum reconstruction cup and acetabulum reconstruction and defect and restore cup have been designed.

The acetabulum reconstruction cup is by liner 1,2, and fixed-wing 4 and cup shell 5 are formed.Referring to accompanying drawing 1, the liner 1 of acetabulum reconstruction cup is a spherical cap-shaped structure, and liner 1 is provided with screw 8.Liner 2 is octagonal structures, and a cup shell 5 is semicircle, and below cup shell 5 circle tracks, promptly the acetabular notch position is respectively equipped with two fixed-wings 4, is respectively equipped with glass shell and pubis are connected usefulness with ischium oval-shaped screw 3 on fixed-wing 4.

Referring to accompanying drawing 2, the structure of acetabulum reconstruction and defect and restore cup is identical with the acetabulum reconstruction cup, just is fixed with adapter sleeve 6 at the top of cup shell 5.As shown in Figure 2, adapter sleeve 6 is cylindrical, and the groove 16 of grafting usefulness is arranged on the circumferential edge of cylinder.Adapter sleeve 6 can be connected locking with me " replacement equipment for artificial ilium ", " multifunctional large pelvis artificial prothesis " of invention.

Fig. 3, Fig. 4 are the embodiment of glass shell.Referring to accompanying drawing 3, the angle α of semicircle cup shell 5 and fixed-wing 4, value is 30 °-40 °.This angle can guarantee that the artificial thigh bone after the interplantation can bear multidirectional power, is difficult for dislocation again.The center of adapter sleeve 6 and cup shell 5 circle center line connectings are 60 °～70 ° with the angle γ value of cup shell 5 lower edge diameters.Its effect is to guarantee that adapter sleeve 6 is parallel with the ilium conductance or acutangulate crossing.The base arc length L of fixed-wing 4 is 14～22mm, and the L-value of ischium side can be a bit larger tham the pubis side, so that being connected and the screw trend of manual acetabulum cup and pubis and ischium.Referring to accompanying drawing 4, be provided with several screws 7 at cup shell 5, octagonal liner 2 is connected and fixed by screw 7 and cup shell 5.For the nut that reduces screw exposes size, screw 7 adopts the buried via hole design.The center of cup shell 5 and the angle β span at fixed-wing screw 3 centers are 95 °-105 °.The effect of angle β is: the one, can be easily acetabular component and pubis and ischium be connected and fixed; The 2nd, guarantee that the screw trend is parallel with the direction of pubis, ischium conductance or acutangulate crossing; The 3rd, make liner 1,2 unhinderedly enter the headspace of glass shell 5.

Fig. 5, Fig. 6 are the embodiment of liner 2.To profile 6, the profile of liner 2 is anistree shape referring to the vertical view 5 of liner 2 and I-I, and section is rectangular-shaped, the approximate water tumbler shape in the vacancy position of central authorities.The upper edge D value of water tumbler shape and the diameter of artificial thigh bone are complementary, and go deep into 3 millimeters of liners (being h=3mm), and lower edge d value guarantees not dislocate after artificial thigh bone places liner 2 less than capital diameter.On liner 2, be provided with simultaneously a plurality of screws 17 and screw 18.Screw 17 is corresponding with the screw 7 of cup on the shell 5, by attachment screw with cup shell 5 and liner 2 sockets.Screw 18 is corresponding with screw 8 on the spherical liner 1, by attachment screw liner 2 and liner 1 is connected and fixed.

Fig. 7 is the embodiment of liner 1.Liner 1 is the spherical crown shape, in its lower edge central authorities one spherical space is arranged, and the spherical crown of artificial femur head can be deployed in wherein, and the upper edge of liner 1 spherical crown camber line contacts with the inwall of cup shell 5, bears and transmission power.Liner 1 is provided with screw 8.

Figure 10 is the assembly drawing of this utility model and artificial thigh bone 14 and handle 15.Artificial thigh bone 14 is embedded in this utility model, and handle 15 embeds femur to be kept in the bone, can make patient's post-operative recovery physiological function.

Cup shell 5 of the present utility model adopts titanium alloy to make, and exposed surface carries out pure titanium micropore spraying, and liner 1,2 is used ceramic material.

Claims (4)

1, a kind of multifunctional assembled manual acetabulum cup, form by acetabulum reconstruction cup and defect and restore cup, it is characterized in that, described two glasss liner (1) is a spherical cap-shaped structure, liner (2) is the octagonal structure, their cup shell is semicircle, is provided with fixed-wing (4) in the below along cup shell (5) circle track, and fixed-wing is equipped with screw on (4).

2, multifunctional assembled manual acetabulum cup according to claim 1, it is characterized in that, the central part of described liner (1) and liner (2) is equipped with circle and lacks the shape space, wherein the space of liner (2) is cup-shaped, its cup-shaped upper edge length is greater than the length of lower edge, and the space, lower edge of liner (1) is spherical.

3, multifunctional assembled manual acetabulum cup according to claim 1, it is characterized in that, described fixed-wing (4) is set to two respectively, and the center and fixed-wing screw (3) the center angle β span of cup shell (5) are 95 °-105, and the coboundary of fixed-wing (4) is the smooth curve shape.

4, multifunctional assembled manual acetabulum cup according to claim 1, it is characterized in that, the top of the cup shell (5) of described defect and restore cup is provided with cylindrical adapter sleeve (6), the circumference of this adapter sleeve (6) is provided with groove (16), and the center of adapter sleeve (6) and cup shell (5) circle center line connecting are 60 °～70 ° with the angle γ of cup shell (5) lower edge diameter.

Images