CN203379231U - Artificial hip joint - Google Patents
Artificial hip joint Download PDFInfo
- Publication number
- CN203379231U CN203379231U CN201320449931.0U CN201320449931U CN203379231U CN 203379231 U CN203379231 U CN 203379231U CN 201320449931 U CN201320449931 U CN 201320449931U CN 203379231 U CN203379231 U CN 203379231U
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- CN
- China
- Prior art keywords
- hip joint
- artificial hip
- femoral stem
- metal femoral
- hemisphere
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Abstract
The utility model discloses an artificial hip joint, which comprises a hemispheroid (1) and a metal femoral stem (2), wherein the hemispheroid (1) and the metal femoral stem (2) are in frustum interference inserted connection; a plurality of through hollow passages (3) are formed inside the metal femoral stem (2); the surface of the hemispheroid (1) is covered with a porous tantalum layer. Through the adoption of the artificial hip joint adopting the structure, the strength and pressure resistance of the artificial hip joint are enabled to be greatly improved, the rejection reaction caused by the transplanting of the artificial hip joint is lower, and the hidden danger is avoided, so that the whole operation can be smoothly performed.
Description
Technical field
This utility model relates to a kind of artificial hip joint, relates in particular to a kind of high strength, high crushing resistance, the little artificial hip joint of rejection.
Background technology
After the artificial hip joint replacing operation, because the hip joint deep infection need carry out reconstruction operations.Clinically, usually adopt the method for removing all artificial infection of joint elements and cell tissue to thoroughly do away with the source of infection.At present, the main method for the treatment of hip joint deep infection is the two-stage reconstruction operations.First stage, the artificial joint element that infected and cell tissue are removed, by containing of One's name is legion antibiotic granular bone cement temporarily be filled in the space that in medullary cavity, removed element and cell tissue occupied originally, treat that virus eliminates fully; Second stage, take out temporary transient bone cement of filling, and again inserts permanent artificial hip joint.
In the first stage, because bone cement can't bear any faint pressure load, make hip joint during this period by the devitalization function, will make Soft Tissue Deformation, sclerotin seriously loose simultaneously, the as easy as rolling off a log reconstruction operations of second stage that causes is difficult to carry out.For solving this difficult problem, usually adopt clinically integrated temporary filling bone cement with substitute particles shape bone cement, thereby obtain certain crushing resistance.Also can on this basis, at bone cement mould material intracavity built-in metal line, after the bone cement sclerosis demoulding, can obtain higher crushing resistance.But the crushing resistance that adopts said method to obtain is still very limited, can not meet well requirements of operation, for hidden danger has been buried in the smooth enforcement of second stage operation.
The utility model content
In view of the foregoing defects the prior art has, this utility model aims to provide a kind of high strength, high crushing resistance, the little artificial hip joint of rejection.
To achieve these goals, this utility model by the following technical solutions: artificial hip joint comprises hemisphere and metal femoral stem; Between described hemisphere and described metal femoral stem, be that frustum interference plug-in type connects; Described metal femoral stem inside has many and connects upper and lower hollow channel; Described hemisphere surface coverage has the porous tantalum layer.
As the improvement to the technical program, the porous tantalum layer porosity of described hemisphere surface coverage is not more than 30%.
Compared with the prior art, this utility model, owing to having adopted technique scheme, makes the intensity of artificial hip joint and crushing resistance obtain large increase, and the rejection after artificial hip joint is implanted is less, for whole operation, has been got rid of smoothly hidden danger.
The accompanying drawing explanation
The front view that Fig. 1 is this utility model embodiment artificial hip joint.
The right view that Fig. 2 is this utility model embodiment artificial hip joint.
Fig. 3 is A-A direction cutaway view.
In figure: 1 hemisphere, 2 metal femoral stem, 3 hollow channels.
The specific embodiment
Below by embodiment, this utility model is specifically described; be necessary to be pointed out that at this following examples are only for being further detailed this utility model; can not be interpreted as the restriction to this utility model protection domain, those skilled in the art can make some nonessential improvement and adjustment to this utility model according to foregoing.
Embodiment: a kind of artificial hip joint, as Figure 1-3, artificial hip joint comprises hemisphere 1 and metal femoral stem 2; Between described hemisphere 1 and described metal femoral stem 2, be that frustum interference plug-in type connects; Described metal femoral stem 2 inside have many and connect upper and lower hollow channel 3; Described hemisphere 1 surface coverage has the porous tantalum layer.
Preferably, the porous tantalum layer porosity of described hemisphere 1 surface coverage is not more than 30%.
Preferably, described hollow channel 3 is three.
When operation, will contain antibiotic bone cement and pour in the hollow channel of metal femoral stem, hemisphere is installed simultaneously.Because femoral stem is metal construction, than other materials, greatly promoted intensity and the crushing resistance of structure.The porous tantalum of hemisphere surface coverage can reduce the rejection of human body, improves the success rate of operation, and for second stage, resetting to perform the operation lays the first stone.Bone cement contains antibiotic, can eliminate the virus in femoral bone cavitas medullaris.During implantation, on metal femoral stem surface, smear some bone cements, can play the effect of better kill virus.
Claims (2)
1. an artificial hip joint, it is characterized in that: described artificial hip joint comprises hemisphere (1) and metal femoral stem (2); Between described hemisphere (1) and described metal femoral stem (2), be that frustum interference plug-in type connects; Described metal femoral stem (2) inside has many and connects upper and lower hollow channel (3); Described hemisphere (1) surface coverage has the porous tantalum layer.
2. artificial hip joint as claimed in claim 1, it is characterized in that: the porous tantalum layer porosity of described hemisphere (1) surface coverage is not more than 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449931.0U CN203379231U (en) | 2013-07-26 | 2013-07-26 | Artificial hip joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449931.0U CN203379231U (en) | 2013-07-26 | 2013-07-26 | Artificial hip joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203379231U true CN203379231U (en) | 2014-01-08 |
Family
ID=49867767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320449931.0U Expired - Fee Related CN203379231U (en) | 2013-07-26 | 2013-07-26 | Artificial hip joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203379231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921844A (en) * | 2015-06-29 | 2015-09-23 | 北京贝思达生物技术有限公司 | Biological hip joint |
| CN105105876A (en) * | 2015-07-27 | 2015-12-02 | 深圳市义和平有限公司 | Improved artificial hip joint outer metal acetabular cup with porous film and preparation method thereof |
-
2013
- 2013-07-26 CN CN201320449931.0U patent/CN203379231U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921844A (en) * | 2015-06-29 | 2015-09-23 | 北京贝思达生物技术有限公司 | Biological hip joint |
| CN105105876A (en) * | 2015-07-27 | 2015-12-02 | 深圳市义和平有限公司 | Improved artificial hip joint outer metal acetabular cup with porous film and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20190726 |