CN204723158U - Extraction apparatus for head of femur - Google Patents
Extraction apparatus for head of femur Download PDFInfo
- Publication number
- CN204723158U CN204723158U CN201520380548.3U CN201520380548U CN204723158U CN 204723158 U CN204723158 U CN 204723158U CN 201520380548 U CN201520380548 U CN 201520380548U CN 204723158 U CN204723158 U CN 204723158U
- Authority
- CN
- China
- Prior art keywords
- head
- femur
- extraction apparatus
- cone angle
- angle
- 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
Links
- 238000000605 extraction Methods 0.000 title claims abstract description 39
- 210000000689 upper leg Anatomy 0.000 title claims abstract description 39
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011540 hip replacement Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
This utility model discloses a kind of extraction apparatus for head of femur, be bicone by arranging the threaded rod of extraction apparatus for head of femur, comprise interior cone angle and outside cone angle with the use of, wherein interior angle of taper is less, in convenient insertion femoral head, and the angle of outside cone angle is larger, insert in femoral head at extraction apparatus for head of femur, rotate described extraction apparatus for head of femur, the cone angle of extraction apparatus for head of femur is made to enter in femoral head, larger cone angle can increase the contact area between screw thread and femoral head, adhesive force can be increased, conveniently take out femoral head, described extraction apparatus for head of femur of the present utility model, structure is simple, easy to operate, and femoral head inserts with convenient to remove, save operating time.
Description
Technical field
This utility model relates to medical instruments field, particularly relates to extraction apparatus for head of femur.
Background technology
In orthopaedics hip replacement surgery, need the femoral head after using extraction apparatus for head of femur taking-up osteotomy, and traditional extraction apparatus for head of femur, conveniently insert in femoral head, therefore cone angle is very little, and cone angle is too small when taking out femoral head, adhesive force is too little, is unfavorable for taking out femoral head, and cone angle is excessive, be inconvenient to again insert in femoral head, when doing femoral head and taking out operation, lose time.
Therefore, prior art has yet to be improved and developed.
Utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of extraction apparatus for head of femur, is intended to solve femoral head and takes out in operation, insert and take out inconvenient problem.
The technical solution of the utility model is as follows:
A kind of extraction apparatus for head of femur, comprise threaded rod and handle, wherein, the tapping screw thread of described threaded rod is bicone, comprises for cone angle in convenient insertion and the outside cone angle being convenient to taking-up.
Described extraction apparatus for head of femur, wherein, the angle of described interior cone angle is 5-20 °.
Described extraction apparatus for head of femur, wherein, the angle of described outside cone angle is 23-40 °.
Beneficial effect: this utility model is bicone by arranging the threaded rod of extraction apparatus for head of femur, comprise interior cone angle and outside cone angle with the use of, wherein interior angle of taper is less, in convenient insertion femoral head, and the angle of outside cone angle is larger, insert in femoral head at extraction apparatus for head of femur, rotate described extraction apparatus for head of femur, the cone angle of extraction apparatus for head of femur is made to enter in femoral head, larger cone angle can increase the contact area between screw thread and femoral head, adhesive force can be increased, conveniently take out femoral head, described extraction apparatus for head of femur of the present utility model, structure is simple, easy to operate, and femoral head inserts with convenient to remove, save operating time.
Accompanying drawing explanation
Fig. 1 is the structural representation of extraction apparatus for head of femur of the present utility model.
Detailed description of the invention
This utility model provides a kind of extraction apparatus for head of femur, for making the purpose of this utility model, technical scheme and effect clearly, clearly, further describes below to this utility model.Should be appreciated that specific embodiment described herein only in order to explain this utility model, and be not used in restriction this utility model.
Refer to Fig. 1, a kind of extraction apparatus for head of femur, comprise threaded rod and handle, wherein, the tapping screw thread of described threaded rod is bicone, comprises for cone angle 101 in convenient insertion and the outside cone angle 102 being convenient to taking-up.Described extraction apparatus for head of femur of the present utility model, comprise threaded rod and handle, handle is used for holding takes convenient rotation, the tapping screw thread of the end of threaded rod is bicone, comprise for cone angle in convenient insertion and the convenient outside cone angle taken out, described extraction apparatus for head of femur of the present utility model, threaded rod bicone can meet the two demands inserted with taking out, wherein interior cone angle is less, conveniently can insert femoral head, and when rotating described threaded rod, outside cone angle and femoral head contact surface larger, adhesive force page is relatively large, conveniently can take out femoral head, add the success rate of operation, also save the operating time simultaneously.
Further, described extraction apparatus for head of femur, wherein, the angle of described interior cone angle 101 is 5-20 °, described extraction apparatus for head of femur of the present utility model, and preferably, the angle of cone angle is 5-20 °, the angle of interior cone angle is excessive, can be unfavorable for that extractor inserts, therefore in described extraction apparatus for head of femur of the present utility model, the angle of described interior cone angle is preferably 5-20 °.
Further, described extraction apparatus for head of femur, wherein, the angle of described outside cone angle 102 is 23-40 °, described extraction apparatus for head of femur of the present utility model, the angle of preferred outside cone angle is 23-40 °, the angle of outside cone angle is unsuitable too small, too small, is unfavorable for capital taking-up, therefore in described extraction apparatus for head of femur of the present utility model, the preferred 23-40 ° of angle of described outside cone angle.
In sum, this utility model is bicone by arranging the threaded rod of extraction apparatus for head of femur, comprise interior cone angle and outside cone angle with the use of, wherein interior angle of taper is less, in convenient insertion femoral head, and the angle of outside cone angle is larger, insert in femoral head at extraction apparatus for head of femur, rotate described extraction apparatus for head of femur, the cone angle of extraction apparatus for head of femur is made to enter in femoral head, larger cone angle can increase the contact area between screw thread and femoral head, adhesive force can be increased, conveniently take out femoral head, described extraction apparatus for head of femur of the present utility model, structure is simple, easy to operate, and femoral head inserts with convenient to remove, save operating time.
Should be understood that; application of the present utility model is not limited to above-mentioned citing; for those of ordinary skills, can be improved according to the above description or convert, all these improve and convert the protection domain that all should belong to this utility model claims.
Claims (3)
1. an extraction apparatus for head of femur, comprises threaded rod and handle, it is characterized in that, the tapping screw thread of described threaded rod is bicone, comprises for cone angle in convenient insertion and the outside cone angle being convenient to taking-up.
2. extraction apparatus for head of femur according to claim 1, is characterized in that, the angle of described interior cone angle is 5-20 °.
3. extraction apparatus for head of femur according to claim 1, is characterized in that, the angle of described outside cone angle is 23-40 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380548.3U CN204723158U (en) | 2015-06-05 | 2015-06-05 | Extraction apparatus for head of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520380548.3U CN204723158U (en) | 2015-06-05 | 2015-06-05 | Extraction apparatus for head of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204723158U true CN204723158U (en) | 2015-10-28 |
Family
ID=54381550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520380548.3U Expired - Fee Related CN204723158U (en) | 2015-06-05 | 2015-06-05 | Extraction apparatus for head of femur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204723158U (en) |
-
2015
- 2015-06-05 CN CN201520380548.3U patent/CN204723158U/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: 20151028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |