CN102871776A - Hip joint femoral stem - Google Patents
Hip joint femoral stem Download PDFInfo
- Publication number
- CN102871776A CN102871776A CN2012103631410A CN201210363141A CN102871776A CN 102871776 A CN102871776 A CN 102871776A CN 2012103631410 A CN2012103631410 A CN 2012103631410A CN 201210363141 A CN201210363141 A CN 201210363141A CN 102871776 A CN102871776 A CN 102871776A
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- China
- Prior art keywords
- stem
- femoral
- sleeve
- femoral stem
- near end
- 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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Abstract
The invention provides a hip joint femoral stem, which comprises a near end and a far end, wherein a stem sleeve is sleeved at the near end of the femoral stem, and the shape of the inner cavity of the stem sleeve is as same as that of the near end of the femoral stem; the stem sleeve is made of macromolecular polyethylene; the stem sleeve has a split structure and is divided into an upper piece and a lower piece, a buckling structure is arranged between the two pieces, and the two pieces are buckled at the near end without gaps formed between the two pieces and the near end; and the wide surface of the stem sleeve is provided with holes, a bone grown through the holes can be attached to a stem body of the femoral stem, so that the fixing strength of the femoral stem is improved. The stem sleeve is added outside the hip joint femoral stem, so that the degree of harm to a marrow cavity after the femoral stem is fixed in the marrow cavity is reduced. The stem sleeve is made of plastic, so the hardness of the stem sleeve is smaller than that of a stem sleeve made of metal.
Description
Technical field
The present invention relates to a kind of femoral hip stem.
Technical background
The false handle of hip joint surface generally has longitudinal fluting in the prior art, and the effect of this groove is simultaneously sheared for reducing, in order to avoid increase bone cement to the adhewsive action of false handle.The present invention relates to a kind of femoral hip stem.
Summary of the invention
For solving above technical problem, technical scheme provided by the invention is as follows: a kind of femoral hip stem, comprise near-end and far-end, and the near-end cover of described femoral stem has sleeve, and the shape of described sleeve inner chamber is identical with femoral stem near-end profile.
Further, the material of described sleeve is high-molecular polythene.
Further, the structure of described sleeve is Split type structure, is divided into two up and down, has buckle structure between two, and two chip architectures are buckled in behind the proximal end and the near-end tight.
Further, the wide surface of described sleeve has attachment hole, sees through this hole by bone production and can be attached to it the femoral stem handle, strengthens the fixedly dynamics of femoral stem.
This femoral hip stem that the present invention relates to installs a sleeve additional outside femoral stem, to reduce femoral stem extent of injury to medullary cavity after medullary cavity is fixing.The material of sleeve belongs to plastics, and its hardness is less than metal species hardness.
Description of drawings
Fig. 1 is femoral hip stem front view of the present invention;
Labelling is as follows among the figure: the 1-femoral stem; The 2-sleeve; The 11-near-end; The 4-attachment hole.
The specific embodiment
As shown in Figure 1, near-end 11 covers of described femoral stem have sleeve 2, and the shape of described sleeve 2 inner chambers is identical with femoral stem 1 near-end 11 profiles.
The material of sleeve 2 is high-molecular polythene.
The structure of sleeve 2 is Split type structure, is divided into two up and down, has buckle structure between two, and two chip architectures are buckled in behind the proximal end and the near-end tight.
Sleeve 2 wide surfaces have adheres to 4 holes, sees through this hole by bone production and can be attached to it femoral stem 1 handle, strengthens the fixedly dynamics of femoral stem 1.
This femoral hip stem of the present invention's design, simple in structure, easily manufactured, need not special processing, this sleeve has preferably biocompatibility, be enclosed within the femoral stem near-end after, because its hardness less, therefore, the injury of frangible bone is reduced relatively, therefore be conducive to lengthen the retention time of femoral stem in human body.
Claims (4)
1. a femoral hip stem comprises near-end and far-end, it is characterized in that, the near-end cover of described femoral stem has sleeve, and the shape of described sleeve inner chamber is identical with femoral stem near-end profile.
2. femoral hip stem according to claim 1 is characterized in that, the material of described sleeve is high-molecular polythene.
3. femoral hip stem according to claim 2 is characterized in that, the structure of described sleeve is Split type structure, is divided into two up and down, has buckle structure between two, and two chip architectures are buckled in behind the proximal end and the near-end tight.
4. femoral hip stem according to claim 3 is characterized in that, the wide surface of described sleeve has attachment hole, sees through this hole by bone production and can be attached to it the femoral stem handle, strengthens the fixedly dynamics of femoral stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103631410A CN102871776A (en) | 2012-09-26 | 2012-09-26 | Hip joint femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103631410A CN102871776A (en) | 2012-09-26 | 2012-09-26 | Hip joint femoral stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102871776A true CN102871776A (en) | 2013-01-16 |
Family
ID=47473462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103631410A Pending CN102871776A (en) | 2012-09-26 | 2012-09-26 | Hip joint femoral stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102871776A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1531487A (en) * | 1974-12-27 | 1978-11-08 | Mahay & Cie | Complete hip-joint prosthesis |
| US5193679A (en) * | 1991-07-10 | 1993-03-16 | Smith & Nephew Richards Inc. | Package for hip prosthesis |
| CN1530080A (en) * | 2003-03-13 | 2004-09-22 | �����������Ǯ�������� | Artificial hip joint device without handle |
| CN1539386A (en) * | 2003-10-27 | 2004-10-27 | 钱毅维 | Protector of coronal femoral head |
| CN101336847A (en) * | 2008-08-26 | 2009-01-07 | 北京天新福医疗器材有限公司 | Metal hip joint combined handle |
| CN101889913A (en) * | 2009-10-23 | 2010-11-24 | 孙瑞财 | Artificial femoral prosthesis |
| US20100331984A1 (en) * | 2009-06-26 | 2010-12-30 | The Cleveland Clinic Foundation | Prosthetic joint component with rotation-regulating structure |
| CN102188297A (en) * | 2010-03-12 | 2011-09-21 | 北京爱康宜诚医疗器材股份有限公司 | Near-end fusion filling sleeve combined thighbone stem |
-
2012
- 2012-09-26 CN CN2012103631410A patent/CN102871776A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1531487A (en) * | 1974-12-27 | 1978-11-08 | Mahay & Cie | Complete hip-joint prosthesis |
| US5193679A (en) * | 1991-07-10 | 1993-03-16 | Smith & Nephew Richards Inc. | Package for hip prosthesis |
| CN1530080A (en) * | 2003-03-13 | 2004-09-22 | �����������Ǯ�������� | Artificial hip joint device without handle |
| CN1539386A (en) * | 2003-10-27 | 2004-10-27 | 钱毅维 | Protector of coronal femoral head |
| CN101336847A (en) * | 2008-08-26 | 2009-01-07 | 北京天新福医疗器材有限公司 | Metal hip joint combined handle |
| US20100331984A1 (en) * | 2009-06-26 | 2010-12-30 | The Cleveland Clinic Foundation | Prosthetic joint component with rotation-regulating structure |
| CN101889913A (en) * | 2009-10-23 | 2010-11-24 | 孙瑞财 | Artificial femoral prosthesis |
| CN102188297A (en) * | 2010-03-12 | 2011-09-21 | 北京爱康宜诚医疗器材股份有限公司 | Near-end fusion filling sleeve combined thighbone stem |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130116 |