CN203379230U - Artificial femoral head - Google Patents
Artificial femoral head Download PDFInfo
- Publication number
- CN203379230U CN203379230U CN201320449864.2U CN201320449864U CN203379230U CN 203379230 U CN203379230 U CN 203379230U CN 201320449864 U CN201320449864 U CN 201320449864U CN 203379230 U CN203379230 U CN 203379230U
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- CN
- China
- Prior art keywords
- femoral head
- hip
- femoral stem
- hemispheroid
- hemisphere
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an artificial femoral head, which comprises a hemispheroid 1 and a metal femoral stem 2, wherein the hemispheroid 1 is in interference fit connection with the metal femoral stem 2; two through hollow passages 3 are formed inside the metal femoral stem; the hemispheroid 1 adopts a hollow structure; the surface of the hemispheroid 1 is covered with a porous tantalum layer 4; integrally formed annular stabs are arranged at the edge of the porous tantalum layer 4. The artificial femoral head adopting the structure has the advantages that the mechanical property of the artificial femoral head is improved, the artificial femoral head structure is enabled to be lighter, the retention is firmer, and the postoperative rejection is smaller.
Description
Technical field
This utility model relates to a kind of hip, relates in particular to the hip that a kind of mechanical property is good, structure is light, maintenance is firm, rejection is little.
Background technology
After the hip replacement operation, because the femoral head 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 femoral head 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 hip.
In the first stage, because bone cement can't bear any faint pressure load, make femoral head 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.Therefore, solve this difficult problem, need firmly hip of good, the maintenance of a kind of mechanical property of research and development badly, make the first stage body can be in steady statue, for the replacement of second stage ready.
The utility model content
In view of the foregoing defects the prior art has, this utility model aims to provide the hip that a kind of mechanical property is good, structure is light, maintenance is firm, rejection is little.
To achieve these goals, this utility model by the following technical solutions: hip comprises hemisphere and metal femoral stem; Between described hemisphere and described metal femoral stem, for interference fit, connect; Described metal femoral stem inside has two and connects upper and lower hollow channel; Described hemisphere is hollow structure, and described hemisphere outer surface is coated with the porous tantalum layer, and described porous tantalum layer edge is with the bur of integrated ring-type.
As the improvement to the technical program, described bur is for being greater than one.
Compared with the prior art, this utility model, owing to having adopted technique scheme, has improved the mechanical property of hip, makes that the hip structure is lighter, maintenance is more firm, postoperative rejection is less.
The accompanying drawing explanation
The front view that Fig. 1 is this utility model embodiment hip.
The right view that Fig. 2 is this utility model embodiment hip.
Fig. 3 is A-A direction cutaway view.
In figure: 1 hemisphere, 2 metal femoral stem, 3 hollow channels, 4 porous tantalum layers, 5 burs.
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 hip, as Figure 1-3, hip comprises hemisphere 1 and metal femoral stem 2; Between described hemisphere 1 and described metal femoral stem 2, for interference fit, connect; Described metal femoral stem 2 inside have two and connect upper and lower hollow channel 3; Described hemisphere 1 is hollow structure, and described hemisphere 1 outer surface is coated with porous tantalum layer 4, and described porous tantalum layer 4 edges are with the bur 4 of integrated ring-type.
Preferably, described bur 4 is for being greater than one.
When operation, will contain antibiotic bone cement and pour in the hollow channel of metal femoral stem, hemisphere is installed simultaneously.Bone cement contains antibiotic, can effectively eliminate the virus in femoral bone cavitas medullaris, and for second stage, resetting to perform the operation lays the first stone.Because femoral stem is metal construction, than other materials, mechanical property is better.Hemisphere is hollow structure, lighter.Porous tantalum can reduce rejection, improves the adaptability of structure to human body.The bur of ring-type can increase the contact area of structure and human body, makes the structure maintenance more firm.
Claims (2)
1. a hip, it is characterized in that: described hip comprises hemisphere (1) and metal femoral stem (2); Between described hemisphere (1) and described metal femoral stem (2), for interference fit, connect; Described metal femoral stem (2) inside has two and connects upper and lower hollow channel (3); Described hemisphere (1) is hollow structure, and described hemisphere (1) outer surface is coated with porous tantalum layer (4), and described porous tantalum layer (4) edge is with the bur (4) of integrated ring-type.
2. hip as claimed in claim 1, it is characterized in that: described bur (4) is for being greater than one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449864.2U CN203379230U (en) | 2013-07-26 | 2013-07-26 | Artificial femoral head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320449864.2U CN203379230U (en) | 2013-07-26 | 2013-07-26 | Artificial femoral head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203379230U true CN203379230U (en) | 2014-01-08 |
Family
ID=49867766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320449864.2U Expired - Fee Related CN203379230U (en) | 2013-07-26 | 2013-07-26 | Artificial femoral head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203379230U (en) |
-
2013
- 2013-07-26 CN CN201320449864.2U patent/CN203379230U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20140108 Termination date: 20190726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |