CN207640534U - A kind of acetabular cup - Google Patents
A kind of acetabular cup Download PDFInfo
- Publication number
- CN207640534U CN207640534U CN201720560146.0U CN201720560146U CN207640534U CN 207640534 U CN207640534 U CN 207640534U CN 201720560146 U CN201720560146 U CN 201720560146U CN 207640534 U CN207640534 U CN 207640534U
- Authority
- CN
- China
- Prior art keywords
- acetabular
- cup
- acetabular cup
- cup body
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001154 acute effect Effects 0.000 claims abstract description 3
- 108010048734 sclerotin Proteins 0.000 abstract description 12
- 238000002513 implantation Methods 0.000 abstract description 10
- 241000358276 Cryptoprocta ferox Species 0.000 description 12
- 210000000988 bone and bone Anatomy 0.000 description 5
- 210000001624 hip Anatomy 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000004394 hip joint Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000000588 acetabulum Anatomy 0.000 description 2
- 238000011882 arthroplasty Methods 0.000 description 2
- 210000001981 hip bone Anatomy 0.000 description 2
- 210000004197 pelvis Anatomy 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 239000003462 bioceramic Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model discloses a kind of acetabular cup, including cup body, the cup body is hemispherical, and the cup body outer rim is tiltedly installed with a step, and the step and cup body are radially at an acute angle；The utility model acetabular cup can obtain the stability at initial stage, be effectively prevented rotation and dislocation, be grown into the porous structure of acetabular cup convenient for phase sclerotin after the implantation.
Description
Technical field
The utility model is related to hip implant technical field more particularly to a kind of acetabular cups.
Background technology
Hip joint is the joint connected between the thigh of human body and the hipbone of pelvis, and being the mankind is sitting or immediately
Play the joint of most important functions.Hip joint due to the disease of tuberculosis etc and the factors such as wound and it is impaired when, in order to make
It is fully recovered, and by artificial hip joint replacing operation removal of lesions, removes pain, restores the activity in joint and original function.Hip
Articular prosthesis includes acetabular component and femoral prosthesis, and acetabular component is fixed in human body hipbone physiology acetabular bone, and femoral prosthesis passes through
Femoral stem is fixed on human femur under loading upper end.Existing acetabular component is usually hemispherical, also referred to as acetabular cup.
Usual acetabular cup uses porous structure, thermal spraying on surface to lay metal or bioceramic rough coatings, to advantageous
It in growing into for sclerotin, is finally fixedly fixed in acetabular bone, but sclerotin grows into the phase and takes a long time.In addition, outside acetabular component
Lack necessary fixing device on spherical surface, before porous structure is combined with human body bone, it is necessary to allow acetabular component in human body hip
It is rapidly fixed in mortar, this is in corrective surgery and the rehabilitation stage must solve the problems, such as.Existing fixed form is logical
It is often to adopt to be screwed, several through-holes is set on the sphere of acetabular component, are used as the mounting hole for wearing screw, number
Amount is usually 3.But screw and human body bone combine undesirable, are susceptible in the rehabilitation stage and loosen gap, cause to fix
Failure, the sclerotin in later stage grow into and can not realize very well, cause operative effect undesirable.
The stability at acetabular cup implantation initial stage is related to the success or failure of entire artificial hip joint replacing operation, how to obtain one kind
Implantation initial stage, there is the acetabular cup of better stability to become urgent problem to be solved.
Utility model content
In order to solve the problems, such as that acetabular cup can not obtain implantation primary stability, the purpose of this utility model in the prior art
It is to provide a kind of acetabular cup.
To achieve the goals above, the utility model adopts the following technical solution：A kind of acetabular cup, including cup body, it is described
Cup body is hemispherical, which is characterized in that the cup body outer rim is tiltedly installed with a step, and the step is with cup body radially in sharp
Angle.
In setting acetabular cup, acetabular cup is pressed into acetabular fossa, because acetabular fossa is smaller 1mm than the extension size of acetabular cup,
After acetabular cup is fully implanted in acetabular fossa, acetabular cup is moved in continuation inward, and the sclerotin for being located at acetabular fossa edge generates interior receipts, into platform
In rank, acetabular cup is surrounded, acetabular cup is difficult to fall off or take out, and ensure that the stability at acetabular cup implantation initial stage.
Preferably, the radical length of the step is the half of cup body thickness.
Preferably, ranging from 0-45 ° of the step and cup body radial direction institute angle degree.
When ranging from 45-90 ° of step and cup body radial direction institute angle degree, since angle is excessive so that implantation process and adding
Work process becomes complicated；In addition, angle is excessive, causes in implantation process sclerotin to be pierced into too deep, create a painful feeling.
It is further preferred that the step edge is tooth-shape structure.
Sclerotin positioned at acetabular fossa edge enters in tooth-shape structure, and fixed acetabular cup prevents acetabular cup rotation.
Preferably, the number of teeth of the step edge is 10-30.
When the number of teeth is more than 30, number of teeth arrangement is overstocked so that step edge is excessively sharp, and in implantation process, is easy
Generate pain；When the number of teeth is less than 10, number of teeth arrangement is sparse, and the sclerotin positioned at acetabular fossa edge subtracts the active force of acetabular cup
Weak, acetabular cup easily slides.
Compared with prior art, advantageous effect of the utility model：The utility model acetabular cup can obtain initial stage
Stability, be effectively prevented rotation and dislocation, convenient for implantation later stage sclerotin grow into the porous structure of acetabular cup.
Description of the drawings
The utility model is further described below in conjunction with the drawings and specific embodiments：
Fig. 1 is the structural schematic diagram of the utility model acetabular cup；
Fig. 2 is the sectional view of the utility model acetabular cup；
Fig. 3 the utility model acetabular cups are in the structural schematic diagram at processing initial stage；
Fig. 4 the utility model acetabular cups are in the structural schematic diagram of processing mid-term；
Structural schematic diagram when Fig. 5 the utility model acetabular cups machine.
Wherein：Cup body 1, step 2.
Specific implementation mode
Such as Fig. 1, a kind of acetabular cup, including hemispherical cup 1,1 outer rim of cup body are tiltedly installed with a step 2,2 edge of step
For tooth-shape structure, the number of teeth is 10-30.
Such as Fig. 2, step 2 is radial at an acute angle with cup body 1, and angular range is 0-45 °, and the radical length of step 2 is that cup body 1 is thick
The half of degree.
Such as Fig. 3,4,5, go out a step 2 in self-control acetabular cup outer rim inclined cut, controls the angle of step 2 and acetabular cup radial direction
Ranging from 0-45 ° of degree, the radical length of step 2 are the half of acetabular cup thickness；The outer rim of step 2 is uniformly beaten by reamer for hip arthroplasty,acetabulum
Several tooth-shape structures are ground, the number of teeth is 10-30, and the depth of tooth is not more than the height of 2 sloping portion of step.
In use, reamer for hip arthroplasty,acetabulum polishing pelvis acetabular fossa is used first, extension size of the acetabular fossa after polishing than acetabular cup
Acetabular cup is pressed into acetabular fossa by small 1mm, and after acetabular cup all indentation acetabular fossas, continuation is pressed into acetabular cup inward, is located at acetabular bone
The sclerotin of nest outer rim squeezes out, and surrounds acetabular cup, fixed function is played to acetabular cup.
When being implanted into acetabular fossa, the sclerotin at acetabular fossa edge enters between step and tooth and tooth the utility model acetabular cup
Fixed function is played in space to acetabular cup, effectively prevent the rotation and dislocation of acetabular cup.
The utility model acetabular cup can obtain the stability at initial stage, and growing into acetabular cup for implantation later stage sclerotin creates item
Part.
The above specific embodiments are only exemplary, is to preferably make skilled artisans appreciate that originally
Patent, be not to be construed as include to this patent range limitation；As long as appointing according to made by spirit disclosed in this patent
How with change or modification, the range that this patent includes is each fallen within.
Claims (5)
1. a kind of acetabular cup, including cup body（1）, the cup body（1）For hemispherical, which is characterized in that the cup body（1）Outer rim is inclined
Tiltedly it is provided with a step（2）, the step（2）With cup body（1）It is radial at an acute angle.
2. acetabular cup as described in claim 1, which is characterized in that the step（2）Radical length be cup body（1）Thickness
Half.
3. acetabular cup as described in claim 1, which is characterized in that the step（2）With cup body（1）Radial institute's angle degree model
Enclose is 0-45 °.
4. acetabular cup as described in claim 1, which is characterized in that the step（2）Edge is tooth-shape structure.
5. acetabular cup as claimed in claim 4, which is characterized in that the step（2）The number of teeth at edge is 10-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720560146.0U CN207640534U (en) | 2017-05-19 | 2017-05-19 | A kind of acetabular cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720560146.0U CN207640534U (en) | 2017-05-19 | 2017-05-19 | A kind of acetabular cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207640534U true CN207640534U (en) | 2018-07-24 |
Family
ID=62885011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720560146.0U Active CN207640534U (en) | 2017-05-19 | 2017-05-19 | A kind of acetabular cup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207640534U (en) |
-
2017
- 2017-05-19 CN CN201720560146.0U patent/CN207640534U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |