CN201977920U - Medullary nailing rod - Google Patents
Medullary nailing rod Download PDFInfo
- Publication number
- CN201977920U CN201977920U CN2010206596561U CN201020659656U CN201977920U CN 201977920 U CN201977920 U CN 201977920U CN 2010206596561 U CN2010206596561 U CN 2010206596561U CN 201020659656 U CN201020659656 U CN 201020659656U CN 201977920 U CN201977920 U CN 201977920U
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- CN
- China
- Prior art keywords
- intramedullary pin
- pin bar
- rod
- hole
- bone
- 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 a medullary nailing rod. The medullary nailing rod comprises a rod body, and the far end of the rod body is fine and the near end of the rod body is coarse; the medullary nailing rod is provided with a long shaft rod with a camber; a long through hole is arranged in the medullary nailing rod in the axial direction; the far end of the medullary nailing rod is sequentially provided with a pressure reducing plane and a locking hole; the near end of the medullary nailing rod is provided with an inclined non-circular pulling hole; the upper end surface of the near end of the medullary nailing rod is provided with a resistance reducing surface that is arranged at the upper end of the pulling hole; and a positioning platform is arranged at the lower end of the pulling hole. By adopting the structure, the near-end section of the nailing rod is greatly reduced so that a rod body can be embedded into a bone more easily; simultaneously the pressure on the external side wall of thighbone owning to the nailing operation can be reduced during the operation process; and the near end with a smaller volume is more suitable for the smaller bone cavity of Asian people, thus leading the regenerated bone to have greater packing space during the bone concrescence process.
Description
Technical field
This utility model relates to a kind of intramedullary pin bar.
Background technology
When fracture takes place in human skeleton, can use intramedullary pin to connect knochenbruch usually, intramedullary pin generally means the long steel nail that is placed in the medullary cavity.Such as the femur and the tibia of lower limb, after an end of bone is opened wound and put into intramedullary pin, lag screw and staple are installed respectively at the near-end and the far-end of intramedullary pin, can prevent the rotation and the shortening of bone.Intramedullary pin is made up of the intramedullary pin bar and the sealing cap that are threaded, because the intramedullary pin bar is that the thin near-end of far-end is thick, and have a long shaft rod of certain flexibility, and the bone cavity of Asia ethnic group is less relatively, therefore bigger near-end volume can block the implantation of following closely body, be increased in the operation process because of hitting the pressure that causes into nail the lateral side of femur wall, but also the filling space of bone during bone healing that can reduce to live again.
The utility model content
It is a kind of simple in structure that the purpose of this utility model is to provide, and energy is the interior intramedullary pin bar of implantable bone fast, and can effectively increase the filling space of bone in the knitting phase of living again.
The technical scheme that realizes this utility model purpose is: a kind of intramedullary pin bar, the body of rod is that the thin near-end of far-end is thick, and have a long shaft rod of flexibility, the intramedullary pin bar be axially arranged with long through-hole, the far-end of intramedullary pin bar is provided with decompression Plane and locking hole successively, and the near-end of intramedullary pin bar is provided with oblique non-circular pulling force hole, and the upper surface of the near-end of intramedullary pin bar is provided with the resistance face of falling, the described resistance face that falls is positioned at the upper end in pulling force hole, and the lower end in pulling force hole is provided with locating platform.
The distal diameter of described intramedullary pin bar is 10mm, and the angle that falls the axis of resistance face and intramedullary pin bar near-end is 1.8 °.
The distal diameter of described intramedullary pin bar is 11mm, and the angle that falls the axis of resistance face and intramedullary pin bar near-end is 1.5 °.
The distal diameter of described intramedullary pin bar is 12mm, and the angle that falls the axis of resistance face and intramedullary pin bar near-end is 1.2 °.
The utlity model has following beneficial effect: the upper surface of (1) near-end of the present utility model is provided with the resistance face of falling, this structure has significantly been dwindled the near-end cross section of nail bar, make in the easier implantable bone of the body of rod, can also reduce in operation process because of hitting the pressure that causes into nail simultaneously the lateral side of femur wall, littler near-end volume will be more suitable for the less relatively bone cavity of Asia ethnic group, thereby the feasible bone of living again has bigger filling space during bone healing.
(2) this utility model distal diameter different according to the intramedullary pin bar, the resistance face that falls adopts different angles with the axis of intramedullary pin bar near-end, and this structure can further reduce the resistance of intramedullary pin bar when implanting, and reduces the pressure that the lateral side of femur wall is subjected to.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment also in conjunction with the accompanying drawings, this utility model is described in further detail, wherein below
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the vertical view of this utility model near-end.
Label is in the accompanying drawing:
Long through-hole 1, decompression Plane 2, locking hole 3, pulling force hole 4, resistance face 5, locating platform 6 fall.
The specific embodiment
(embodiment 1)
See Fig. 1, the intramedullary pin bar of present embodiment is that the thin near-end of far-end is thick, and has the long shaft rod of flexibility.
The intramedullary pin bar be axially arranged with long through-hole 1, the far-end of intramedullary pin bar is provided with decompression Plane 2 and locking hole 3 successively, the near-end of intramedullary pin bar is provided with oblique non-circular pulling force hole 4.See Fig. 2, the upper surface of the near-end of intramedullary pin bar is provided with the resistance face of falling 5, falls the upper end that resistance face 5 is positioned at pulling force hole 4, and the lower end in pulling force hole 4 is provided with locating platform 6.The distal diameter of intramedullary pin bar is 10mm, and the angle that falls the axis of resistance face 5 and intramedullary pin bar near-end is 1.8 °.The resistance face that falls 5 of intramedullary pin bar is that direct Milling Process forms on the near-end cylinder of intramedullary pin bar.
(embodiment 2)
Present embodiment is substantially the same manner as Example 1, and difference is that the distal diameter of intramedullary pin bar is 11mm, and the angle that falls the axis of resistance face 5 and intramedullary pin bar near-end is 1.5 °.
(embodiment 3)
Present embodiment is substantially the same manner as Example 1, and difference is that the distal diameter of intramedullary pin bar is 12mm, and the angle that falls the axis of resistance face 5 and intramedullary pin bar near-end is 1.2 °.
Should be appreciated that specific embodiment described above only is used to explain this utility model, and be not used in qualification this utility model.Conspicuous variation of being extended out by spirit of the present utility model or change still are among the protection domain of the present utility model.
Claims (4)
1. intramedullary pin bar, the body of rod is that the thin near-end of far-end is thick, and have a long shaft rod of flexibility, the intramedullary pin bar be axially arranged with long through-hole (1), the far-end of intramedullary pin bar is provided with decompression Plane (2) and locking hole (3) successively, and the near-end of intramedullary pin bar is provided with oblique non-circular pulling force hole (4), it is characterized in that: the upper surface of the near-end of intramedullary pin bar is provided with the resistance face of falling (5), describedly fall the upper end that resistance face (5) is positioned at pulling force hole (4), the lower end of pulling force hole (4) is provided with locating platform (6).
2. intramedullary pin bar according to claim 1 is characterized in that: the distal diameter of described intramedullary pin bar is 10mm, and the angle that falls the axis of resistance face (5) and intramedullary pin bar near-end is 1.8 °.
3. intramedullary pin bar according to claim 1 is characterized in that: the distal diameter of described intramedullary pin bar is 11mm, and the angle that falls the axis of resistance face (5) and intramedullary pin bar near-end is 1.5 °.
4. intramedullary pin bar according to claim 1 is characterized in that: the distal diameter of described intramedullary pin bar is 12mm, and the angle that falls the axis of resistance face (5) and intramedullary pin bar near-end is 1.2 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206596561U CN201977920U (en) | 2010-12-15 | 2010-12-15 | Medullary nailing rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206596561U CN201977920U (en) | 2010-12-15 | 2010-12-15 | Medullary nailing rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201977920U true CN201977920U (en) | 2011-09-21 |
Family
ID=44605392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206596561U Expired - Fee Related CN201977920U (en) | 2010-12-15 | 2010-12-15 | Medullary nailing rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201977920U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112704556A (en) * | 2020-12-22 | 2021-04-27 | 安阳市伊来达医疗器械有限公司 | Anti-sinking anti-rotation rectangular wedge-shaped intramedullary fixation device for orthopedics department |
-
2010
- 2010-12-15 CN CN2010206596561U patent/CN201977920U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112704556A (en) * | 2020-12-22 | 2021-04-27 | 安阳市伊来达医疗器械有限公司 | Anti-sinking anti-rotation rectangular wedge-shaped intramedullary fixation device for orthopedics department |
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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: 20110921 Termination date: 20191215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |