CN201168072Y - Artificial femoral stem - Google Patents
Artificial femoral stem Download PDFInfo
- Publication number
- CN201168072Y CN201168072Y CNU2008200048513U CN200820004851U CN201168072Y CN 201168072 Y CN201168072 Y CN 201168072Y CN U2008200048513 U CNU2008200048513 U CN U2008200048513U CN 200820004851 U CN200820004851 U CN 200820004851U CN 201168072 Y CN201168072 Y CN 201168072Y
- Authority
- CN
- China
- Prior art keywords
- locking nail
- femoral stem
- nail hole
- locking
- artificial
- 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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- Prostheses (AREA)
Abstract
The utility model relates to an artificial femoral stem used for clinic. Two locking nail holes which are transversely penetrated are arranged at the proximal end of the artificial femoral stem, one locking nail hole which is transversely penetrated is arranged at the distal end of the femoral stem, the three locking nail holes are not positioned on the same axis line and form a triangle, and a matched locking nail with the length which is longer than the depth of the corresponding locking nail hole is arranged in each locking nail hole. When in clinical use, the femoral stem is arranged in the marrow cavity, after that, the locking nails are respectively screwed in by penetrating a bone bed and the locking nail holes in a perspective state or the guidance of a C-arm machine. The structure adopts the three-point distribution for fixing a femoral prosthesis, thereby leading the stress to be distributed in a balanced way and achieving the effects of preventing the rotation, the loosening and the sinking of the femoral stem.
Description
Affiliated technical field
This utility model relates to a kind of medical apparatus and instruments, the artificial femur handle of especially clinical usefulness.
Background technology
The artificial femur handle kind is a lot of on the current medical market.The patient in the time of one section of implanted femur handle after, especially do not having under the situation of bone cement, femoral stem rotates easily, loosening and sink.Disclosed utility model CN2389639Y announced the femoral stem structure of a kind of artificial hip joint nail with lock on August 2nd, 2000, this structure is installed with the screw that artificial hip joint femoral shaft is stretched out at two ends respectively in the hole of uniform two lateral direction penetratings of axis near-end of artificial hip joint femoral shaft in the hole.This structure makes artificial hip joint femoral shaft insert in the medullary cavity and the femur relative fixed, can not produce loosening.But this structural stress all concentrates on near-end, can produce torsion as fulcrum with near-end after using, and causes the femoral stem rotation, and easily causes the local and far-end end points place sclerotin attenuation of near-end.
Summary of the invention
This utility model provides a kind of artificial femur handle of clinical usefulness, and it can overcome the problem that existing femoral stem rotates easily, becomes flexible and sink well.
For solving the problems of the technologies described above, this utility model is the locking nail hole that is provided with two lateral direction penetratings at the femoral stem near-end, the femoral stem far-end is provided with the locking nail hole of a lateral direction penetrating, these three locking nail holes are not positioned on the axis, triangularity all is installed with the supporting pinning of length greater than corresponding locking nail hole depth length in each locking nail hole.
After adopting such structure, during clinical use, unload pinning earlier, femoral stem is squeezed into medullary cavity after, under the perspective state or C arm power traction lead down, run through bone bed and locking nail hole and be screwed into corresponding supporting pinning.Because locking nail hole is located at the near-end and the far-end of femoral stem respectively, has avoided stress too to concentrate on the part, avoid the local fatigue fracture, and adopt 3 distribution resected femur prostheses, stress equilibrium is distributed, reach prevent to rotate, the loosening and effect of sinking.And this utility model outward appearance is succinct, and clinical manipulation is convenient.
Description of drawings
Below in conjunction with the accompanying drawing and the enforcement specific embodiment this utility model is further specified.
Fig. 1 is the cutaway view of this utility model artificial femur handle.
1. femoral stem near-ends among the figure, 2. proximal locking nail hole, 3. distal locking nail hole, 4. bone bed, 5. femoral stem far-end.
The specific embodiment
Be provided with the proximal locking nail hole (2) of two lateral direction penetratings at the artificial femur handle near-end (1) of clinical usefulness shown in Figure 1, be provided with the distal locking nail hole (3) of a lateral direction penetrating at the femoral stem far-end (5) of femoral prosthesis, these three locking nail holes are not positioned on the axis, triangularity all is installed with the supporting pinning of length greater than corresponding locking nail hole depth length in each locking nail hole.During clinical use, after femoral stem is squeezed into medullary cavity, under the perspective state or C arm power traction lead down, run through bone bed (4) and locking nail hole (2,3) respectively and be screwed into pinning and get final product.
Claims (1)
1. artificial femur handle, constitute by femoral stem near-end, femoral stem far-end, pinning, it is characterized in that described femoral stem near-end is provided with the locking nail hole of two lateral direction penetratings, the femoral stem far-end is provided with the locking nail hole of a lateral direction penetrating, these three locking nail holes are not positioned on the axis, triangularity all is installed with the supporting pinning of length greater than corresponding locking nail hole depth length in each locking nail hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200048513U CN201168072Y (en) | 2008-03-17 | 2008-03-17 | Artificial femoral stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200048513U CN201168072Y (en) | 2008-03-17 | 2008-03-17 | Artificial femoral stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201168072Y true CN201168072Y (en) | 2008-12-24 |
Family
ID=40207121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200048513U Expired - Fee Related CN201168072Y (en) | 2008-03-17 | 2008-03-17 | Artificial femoral stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201168072Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107320169A (en) * | 2017-07-31 | 2017-11-07 | 王春庆 | A kind of clavicle fractured near end bone plate with manubrium clamping plate |
-
2008
- 2008-03-17 CN CNU2008200048513U patent/CN201168072Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107320169A (en) * | 2017-07-31 | 2017-11-07 | 王春庆 | A kind of clavicle fractured near end bone plate with manubrium clamping plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20120317 |