CN2602733Y

CN2602733Y - Self-close type acetabulum cup

Info

Publication number: CN2602733Y
Application number: CN 03228487
Authority: CN
Inventors: 钱本文
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-28
Filing date: 2003-01-28
Publication date: 2004-02-11
Anticipated expiration: 2013-01-28

Abstract

The utility model provides a self closing acetabulum cup, which comprises a main body that is made by the combination of a support body and a simplified body, a manual femoral head that is pin jointed on the supporting body of the main body, a terret that is sleeved on the manual femoral head and is provided with a buckle stretching along the axial direction, an acetabulum cup that is inlaid and sleeved on the terret. Wherein, the buckle is provided with a fluke is stretches outwardly, the opening end of the acetabulum cup is matched with an inlaid groove to the buckle. For the reason that the buckle has a fluke and is arranged inside the terret as well as not prone to be pressed by the outer force, the acetabulum cup does not separate from the manual femoral head when the acetabulum cup moves according to the movement of an arthrosis. Further more, the buckle can fixedly and steadily encloses the wounded femur, and also can integrate with a new grown hemorrhage pipe and a callus.

Description

The self-closing acetabular cup

Technical field

This utility model relates to a kind of self-closing acetabular cup, be meant a kind of be installed in the human body acetabular bone and can with the artificial thigh bone device that is articulated.

Background technology

For impaired capital processing mode; generally be that impaired place is smooth resets with it; and then fix with tabular steel; again two nail bodies are squeezed in the femur and made it fixing; but traditional structure is covered with the unsettled shortcoming except having fixed packet like this; the blood vessel and the callus that more have order newly to grow can't effectively coat steel; therefore cause tabular steel can't be fully and femur be combined into one and be protected; and then cause the steel of this impaired part and coating to bear the limited and segregative shortcoming of strength; more can't move with hip joint; on practicality, have a greatly reduced quality; increase patient's misery; above-mentioned various shortcoming for a long time, is perplexing medical dealer and patient always.

In order to improve above-mentioned shortcoming, a kind of hip joint structure having occurred sees also shown in Figure 1, it is provided with the supporter 100 of a cooperation shaft of femur shape, be equipped with an artificial thigh bone 200 on these supporter 100 tops, be nested with a collar 300 on this artificial thigh bone 200, these collar 300 peripheries are provided with outward extending flange 310, be embedded with an acetabular cup 400 on this collar 300 simultaneously, this acetabular cup 400 is to cooperate the artificial femur head shapes, and these acetabular cup 400 openings are provided with the groove 410 of mating flanges 310, this device construction in use, earlier the femoral head excision is kept neck of femur, again supporter 100 is inserted in the shaft of femur, and substitute impaired femoral head with artificial thigh bone, but because of described flange 310 is arranged on the collar 300 peripheries and is flat, therefore, acetabular cup 400 is under external force extruding, or during start, easily come off from artificial thigh bone 200, thus very undesirable in the use.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of can firmly being articulated with artificial thigh bone, unlikely with joint motions face produce come off the self-closing acetabular cup.

Provide a kind of self-closing acetabular cup in order to solve the problems of the technologies described above this utility model, it is provided with a body, this body is provided with the supporter of a cooperation femur bone shape, the cylindrical shell that is hollow form in this supporter side is provided with, and be equipped with an artificial thigh bone on this supporter top, be nested with a collar on this artificial thigh bone, this collar inboard is provided with the clasp that extends vertically, this clasp is provided with the barb that outwards protrudes out, and be embedded with an acetabular cup on this collar, this acetabular cup is to cooperate the artificial femur head shapes, and this acetabular cup opening is provided with the caulking groove that cooperates clasp, when using, can earlier the femoral head excision be kept neck of femur, again supporter is inserted in the shaft of femur together with cylindrical shell, and with the alternative impaired femoral head of artificial thigh bone, and acetabular cup is fixed in the acetabular bone of human body, again artificial thigh bone is inserted in the acetabular cup, relend by the collar and make artificial thigh bone be fixed in acetabular cup.

Because of clasp has barb, and be arranged on the inboard of the collar, be not vulnerable to the external force extruding, so when acetabular cup was mobile with joint motions, this acetabular cup can not split away off from artificial thigh bone; Simultaneously, it also can firmly be coated and fixed injured femur securely, and can with newly grow blood vessel and callus is combined into one.

Description of drawings

Fig. 1 is the traditional hip joint structure sketch map when implementing.

Fig. 2 is the perspective exploded view of self-closing acetabular cup of the present utility model.

Fig. 3 is the schematic perspective view of self-closing acetabular cup of the present utility model.

Fig. 4 is the collar and the acetabular cup compound section sketch map of self-closing acetabular cup of the present utility model.

The figure number explanation of main element:

Body 10

Supporter 11

Simplified 12

Artificial thigh bone 20

Metal hip cup 30

Acetabular cup 40

Caulking groove 41

The collar 50

Clasp 51

Barb 52

The specific embodiment

See also shown in Fig. 2,3,4, self-closing acetabular cup of the present utility model, it is that a kind of artificial thigh bone firmly can being fixed on securely can be avoided in this self-closing acetabular cup and the device of prevention of postoperative dislocation, this self-closing acetabular cup is provided with a body 10, this body 10 is provided with a supporter 11, this supporter 11 is a solid cylinder in present embodiment, and this supporter 11 cooperates femur shape and is arc-curved shape, and this supporter 11 is by an end to the other end gradually to the internal condensation shape.

In addition, this body 10 supporter 11 other be provided with cooperate with it and in be the cylindrical shell 12 of hollow form, at the cylindrical shell described in this enforcement 12 is bullet, this cylindrical shell 12 can be one-body molded with supporter 11, or combine by the fixed engagement mode, this cylindrical shell 12 is to be closed with supporter 11 to the opposite end of internal condensation end, and the other end then is gradually to the shape of expanding of opening.

Moreover, this supporter 11 is sheathed with an artificial thigh bone 20 on the bigger end of sectional area, be nested with a hollow collar 50 on this artificial thigh bone 20, these collar 50 inboards are provided with the clasp 51 that extends vertically, this clasp 51 is provided with the barb 52 that outwards protrudes out, and be embedded with an acetabular cup 40 of making by superelevation one's share of expenses for a joint undertaking material (polyethylene) on this collar 50, the interior shape of this acetabular cup 40 cooperates the artificial femur head shapes, and these acetabular cup 40 openings are provided with the caulking groove 41 that cooperates clasp 51, in addition, the external shape of this acetabular cup 40 cooperates the interior shape of metal hip cup 30 with matching.

During use, please refer to Fig. 2,3, shown in 4, can be earlier with impaired femoral head excision, after again femoral head being done suitably to handle, body 10 is inserted in the shaft of femur (not shown), supporter 11 and cylindrical shell 12 on the body 10 are goed deep in the shaft of femur, so that body 10 can be combined into one with femur, and at the same time metal hip cup 30 is fixed in the acetabular bone by peg 31, after again acetabular cup 40 being inserted in the metal hip cup 30, artificial thigh bone 20 is inserted in the acetabular cup 40, by the hollow collar 50 artificial thigh bone 20 is fixed in the acetabular cup 40 at last, like this, because of clasp 51 has barb 52, and be arranged on the inboard of the collar 50, be not vulnerable to the external force extruding, so when acetabular cup 40 was mobile with joint motions, this acetabular cup 40 can not split away off from artificial thigh bone 20.

Claims

1, a kind of self-closing acetabular cup, it comprises:

One body, this body are to be combined by supporter and cylindrical shell;

One artificial thigh bone, it is articulated on the supporter of body;

It is characterized in that, also comprise:

One collar, it is set on the artificial thigh bone, and this collar inboard is provided with the clasp that extends vertically, and this clasp is provided with the barb that outwards protrudes out;

One acetabular cup, it is nested on the collar, and this acetabular cup opening is provided with the caulking groove that cooperates clasp.

2, self-closing acetabular cup according to claim 1 is characterized in that, described supporter and cylindrical shell are formed in one.

3, self-closing acetabular cup according to claim 1 is characterized in that, described cylindrical shell and supporter are closed to the opposite end of internal condensation end, and the other end then is gradually to the shape of expanding of opening.

4, self-closing acetabular cup according to claim 1 is characterized in that, it comprises that also one is that match with described acetabular cup and be fixedly connected on metal hip cup in the acetabular bone.

5, self-closing acetabular cup according to claim 4 is characterized in that, the interior shape of described acetabular cup cooperates the artificial femur head shapes, and its external shape cooperates the interior shape of metal hip cup with matching.