CN2696578Y

CN2696578Y - Artificial biological acetabulum shelf

Info

Publication number: CN2696578Y
Application number: CN 200420035549
Authority: CN
Inventors: 张湘生; 祝天经; 杨守恒
Original assignee: 张湘生
Priority date: 2004-04-07
Filing date: 2004-04-07
Publication date: 2005-05-04
Anticipated expiration: 2014-04-07

Abstract

The utility model discloses an artificial biological acetabulum cover, being provided with a cover body which adopts absorbable biologic material. A femoral head joint concave surface which is in a partial spherical surface shape is arranged form the lower part of the back of the cover to the inside. The two sides of the upper part of the cover body are both provided with a plurality of jagged bone joint grooves at intervals. The utility model can make the upper part of the cover body inserted into the hole tightly by drilling inward a hole on the outer plate of the acetabulum of the dislocation point during the operation and the treatment of the developmental dislocation of the hip joint of a human body. Thus, the bone blocks of the acetabulum cover can be made absorbed slowly with uneasy fracture, and melted with the acetabulum hollowness of the human body into a big spherical surface. A good surface contact loading is formed with the femoral head, and the femoral head is made arranged in the acetabulum hollowness stably without dislocation. Meanwhile, the operative injuries are reduced, and the bad results of osteonecrosis of the femoral head and osteoarthritis are stopped. The acetabulum cover can creep instead of being absorbed by the bone of the acetabulum cover, and the internal fixed object can be taken out without a second operation.

Description

Artificial bio-membrane's mortar lid

Technical field

This utility model relates to a kind of prosthese that can be transplanted to the human body hip in the medical science surgical field, specifically, relates to a kind of artificial bio-membrane's mortar lid.

Background technology

The operative treatment of human development's property dislocation of hip joint (DDH), the most commonly used with shelf operation, yet the mortar lid of Chinese scholars design is at present all made with intercepting human body self ilium piece, its shortcoming is the big and ilium piece rough surface of operation wound, the easily absorption of bone piece, frangibility and femoral head point-like load problem appear in postoperative, so that femoral head unbalance stress, supervention femur head necrosis and osteoarthritis etc.

Summary of the invention

Make the problem that the easily absorption of bone piece, frangibility and femoral head point-like load appear in postoperative that the used artificial mortar lid of lid operation exists in order to solve existing human development's property dislocation of hip joint, the purpose of this utility model is to provide a kind of to make mortar lid bone piece absorb lentamente and frangibility and can be fused into a big sphere to form artificial bio-membrane's mortar lid of good face contact load with femoral head with the acetabular bone recess not.

Solution of the present utility model is as follows.It has a lid that adopts absorbable biomaterial to make, and inwardly offers the femoral head applying concave surface that is the spherical calotte shape from the lid lower backside, and equal compartment of terrain, both sides, lid top offers the sclerotin engagement groove of many indentations.

This utility model with said structure is when being used for human development's property dislocation of hip joint operative treatment, elder generation inwardly bores one in the proper site of the acetabular bone outside plate of dislocation place can just hold the aperture that insert on lid of the present utility model top, then lid top is tightly inserted in this hole, make the femoral head applying concave surface of lid lower backside and the femoral head of dislocation place fit simultaneously.So; the femoral head applying concave surface of lid just is fused into a big sphere with the acetabular bone recess; form a good face contact load between the common and femoral head, femoral head stably is in the acetabular bone recess and can not dislocates, and keep lower pressure with the protection femoral head.Simultaneously two jiaos of mortar lid root edge can be satisfied the needs of acetabular bone front and rear edges when damaged respectively.When bone tissue growth, the sclerotin engagement groove of both sides, lid top can be goed deep into well shearing force being scattered in hipbone in the acetabular bone outside plate, and increases the contact area of mortar lid and hipbone, is beneficial to the grown sclerotin institute creeping substitution of this mortar lid.

The utlity model has following beneficial effect: 1. this mortar lid adopts more than or equal to the biomaterial of normal cortical bone intensity and makes, frangibility not, and it is absorbed as slow absorption, and soak time is about 1 year to 1 year half fully, meets the shelf operation requirement.2. this mortar lid material therefor can be substituted from the body sclerotin by creeping substitution, and need not performs the operation once more takes out inside-fixture.3. reduce surgical injury, stop adverse consequencess such as supervention femur head necrosis and osteoarthritis, meet the Minimally Invasive Surgery viewpoint.

Description of drawings

Fig. 1, Fig. 2 and Fig. 3 are respectively front view, rearview and the left view of a kind of concrete structure of this utility model;

Fig. 4 and Fig. 5 are respectively A-A and the B-B cutaway view of Fig. 1;

Fig. 6 is Fig. 1 this utility model secure bond position view when human body acetabular bone position when operative treatment.

The specific embodiment

Referring to Fig. 1 to Fig. 5.The utlity model has a lid 1 that adopts absorbable biomaterial to make, inwardly offer the femoral head applying concave surface 101 that is the spherical calotte shape from lid 1 lower backside, equal compartment of terrain, both sides, lid 1 top offers the sclerotin engagement groove 102 of many indentations.The absorbable biomaterial of making lid 1 can adopt xenogenesis cortical bone (as little Os Bovis seu Bubali), homogenic cortex bone, macromolecule absorbable material etc.The middle of the lid 1 above femoral head applying concave surface 101 offers upper and lower two bone tissue growths and enters

hole

103 and 104, is beneficial to engaging of the growth of sclerotin and sclerotin and lid 1.

Referring to Fig. 6.This utility model when being used for operative treatment as shown in figure secure bond at the human body acetabular bone, promptly be earlier inwardly to pierce one just can hold the aperture that insert on lid 1 top in the proper site of the acetabular bone outside plate 2 of dislocation place, then lid 1 top is tightly inserted in this hole, make the femoral head applying concave surface 101 of lid 1 lower backside and the femoral head 3 of dislocation place fit simultaneously.So; the femoral head applying concave surface 101 of lid 1 just is fused into a big sphere with acetabular bone recess 21; good face contact load of formation between common and the femoral head 3; it is inner and can not dislocate to make femoral head 3 stably be in acetabular bone recess 21, and keeps lower pressure with protection femoral head 3.Because the sclerotin engagement groove 102 of many indentations in lid both sides, 1 top is close to the inwall of acetabular bone outside plate 2 aperture that bores, so when bone tissue growth, can increase the contact area of mortar lid and hipbone, well shearing force is scattered in hipbone, helps the grown sclerotin institute creeping substitution of mortar lid.

Claims

1, a kind of artificial bio-membrane's mortar lid, it is characterized in that, it has a lid that adopts absorbable biomaterial to make, and inwardly offers the femoral head applying concave surface that is the spherical calotte shape from the lid lower backside, and equal compartment of terrain, both sides, lid top offers the sclerotin engagement groove of many indentations.

2, artificial bio-membrane's mortar lid according to claim 1 is characterized in that the middle of the lid above femoral head applying concave surface offers upper and lower two bone tissue growths and enters the hole.