CN201197743Y - Anti-loose bone nail - Google Patents
Anti-loose bone nail Download PDFInfo
- Publication number
- CN201197743Y CN201197743Y CNU2008200774178U CN200820077417U CN201197743Y CN 201197743 Y CN201197743 Y CN 201197743Y CN U2008200774178 U CNU2008200774178 U CN U2008200774178U CN 200820077417 U CN200820077417 U CN 200820077417U CN 201197743 Y CN201197743 Y CN 201197743Y
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- CN
- China
- Prior art keywords
- bone nail
- screw
- screw rod
- thread
- nail
- 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 relates to an orthopedic implant in a medical appliance, in particular to an anti-loosing bone nail. The anti-loosing bone nail comprises a screw-head and a screw rod. Thread segments of different thread pitches are arranged on the screw rod. Compared with the prior art, the utility model has the advantages that the structure is simple; because the thread pitches and the diameters of the thread segments are different, a loosing path of the bone nail is destroyed, the resistance of the bone nail during the gyration is enhanced, and the phenomena of bone nail loosing is greatly reduced.
Description
Technical field:
This utility model relates to the orthopaedics implant in the medical apparatus and instruments, specifically lock bone nail.
Background technology:
The present nail that uses clinically, all are the structure and the external forms of applying mechanically civilian screw,, can get loose phenomenon after causing a lot of conventional nails to be implanted because human skeleton need support muscle and do various motions, the patient also will implant nail once more like this, brings misery to the patient.
Summary of the invention:
Goal of the invention of the present utility model is the phenomenon that gets loose easily at existing nail, and a kind of lock bone nail simple in structure is provided.
For achieving the above object, this utility model by the following technical solutions: this lock bone nail, comprise head of screw and screw rod, described screw rod is provided with the thread segment that pitch does not wait.
Compared with prior art, advantage of the present utility model is: this lock bone nail is simple in structure, because the pitch of each thread segment is different with diameter, destroyed the approach that gets loose of nail, has increased nail and has revolved resistance when moving back, has significantly reduced the phenomenon that nail gets loose.
Description of drawings:
Fig. 1 is the different two-period form lock bone nail structural representation of diameter.
Fig. 2 is the identical two-period form lock bone nail structural representation of diameter.
Among the figure: cruciate flower 1, head of screw 2, fine thread section 3, coarse-pitch thread section 4, screw tip 5, reducing portion 6, screw rod 7.
The specific embodiment:
Below in conjunction with drawings and Examples this utility model is described further.
Embodiment one:
Referring to accompanying drawing 1, this utility model is by cruciate flower 1, head of screw 2, and fine thread section 3, coarse-pitch thread section 4, screw tip 5, reducing portion 6 and screw rod 7 constitute.Wherein: cruciate flower 1 places the top of head of screw 2, the bottom of head of screw 2 is provided with it and is the screw rod 7 of one, and the top of this screw rod 7 is provided with fine thread section 3, and the bottom is a coarse-pitch thread section 4, the pitch of this coarse-pitch thread section 4 is greater than the pitch of fine thread section 3, and the bottom of screw rod 7 is screw tip 5.The Major Diam of coarse-pitch thread section 4 is less than the Major Diam of fine thread section 3.So the diameter of each thread segment described in the present embodiment does not wait.
Embodiment two:
Referring to accompanying drawing 2, in the present embodiment, this utility model is by cruciate flower 1, head of screw 2, and fine thread section 3, coarse-pitch thread section 4, screw tip 5 and screw rod 7 constitute.Wherein: cruciate flower 1 places the top of head of screw 2, the bottom of head of screw 2 is provided with it and is the screw rod 7 of one, and the top of this screw rod 7 is fine thread section 3, and the bottom is a coarse-pitch thread section 4, and the equal diameters of coarse-pitch thread 4 and fine thread 3, the bottom of screw rod 7 are screw tip 5.
In the foregoing description, the thread segment on the screw rod 7 is two sections of fine thread sections → coarse-pitch thread section, so the two-period form of being called.In addition, the thread segment on the screw rod 7 can also be the form of coarse-pitch thread → fine thread; Or fine thread → coarse-pitch thread → fine thread ... Deng multi-segment structure.
Its material of nail described in the utility model can adopt metal, artificial bone, macromolecular compound etc.
Operation principle of the present utility model is as follows: screw cruciate flower 1 with instrument, with nail implantable bone tissue, enter in the process of osseous tissue at it, by part (being coarse-pitch thread 4 in an embodiment) tapping female thread in osseous tissue near screw tip 5, and this female thread is to be out of shape under the extruding of fine thread section 3 at the thread segment of precession subsequently, thereby destroyed the spiral approach of coarse-pitch thread 4, increased nail and revolved the resistance that moves back, and then reached the purpose that prevents that nail from getting loose.
Claims (2)
1. a lock bone nail comprises head of screw and screw rod, it is characterized in that: described screw rod is provided with the thread segment that pitch does not wait.
2. lock bone nail according to claim 1 is characterized in that: the diameter of described each thread segment does not wait.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200774178U CN201197743Y (en) | 2008-05-30 | 2008-05-30 | Anti-loose bone nail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200774178U CN201197743Y (en) | 2008-05-30 | 2008-05-30 | Anti-loose bone nail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201197743Y true CN201197743Y (en) | 2009-02-25 |
Family
ID=40448899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200774178U Expired - Fee Related CN201197743Y (en) | 2008-05-30 | 2008-05-30 | Anti-loose bone nail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201197743Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548907B (en) * | 2009-05-14 | 2011-06-01 | 梁德富 | Backward-forward direction self-locking loose-proof bone nail |
| CN103505280A (en) * | 2012-06-26 | 2014-01-15 | 孟圣慧 | bone implant |
| WO2014117456A1 (en) * | 2013-02-01 | 2014-08-07 | Meng sheng-hui | Bone implant |
| CN104921801A (en) * | 2015-06-29 | 2015-09-23 | 北京贝思达生物技术有限公司 | Metal bone screw |
| CN105167835A (en) * | 2014-12-31 | 2015-12-23 | 天津正天医疗器械有限公司 | Locking screw |
| CN105640638A (en) * | 2014-11-13 | 2016-06-08 | 无锡市闻泰百得医疗器械有限公司 | Pedicle screw structure |
| CN109330673A (en) * | 2018-08-06 | 2019-02-15 | 苏州玄陶商务咨询有限公司 | A kind of synthetism fixing piece, Orthopedic fixation device and preparation method thereof |
-
2008
- 2008-05-30 CN CNU2008200774178U patent/CN201197743Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548907B (en) * | 2009-05-14 | 2011-06-01 | 梁德富 | Backward-forward direction self-locking loose-proof bone nail |
| CN103505280A (en) * | 2012-06-26 | 2014-01-15 | 孟圣慧 | bone implant |
| CN103505280B (en) * | 2012-06-26 | 2015-08-19 | 孟圣慧 | bone implant |
| WO2014117456A1 (en) * | 2013-02-01 | 2014-08-07 | Meng sheng-hui | Bone implant |
| US9867644B2 (en) | 2013-02-01 | 2018-01-16 | Sheng-Hui Meng | Bone implant |
| CN105640638A (en) * | 2014-11-13 | 2016-06-08 | 无锡市闻泰百得医疗器械有限公司 | Pedicle screw structure |
| CN105167835A (en) * | 2014-12-31 | 2015-12-23 | 天津正天医疗器械有限公司 | Locking screw |
| CN105167835B (en) * | 2014-12-31 | 2019-02-15 | 天津正天医疗器械有限公司 | Lock screw |
| CN104921801A (en) * | 2015-06-29 | 2015-09-23 | 北京贝思达生物技术有限公司 | Metal bone screw |
| CN109330673A (en) * | 2018-08-06 | 2019-02-15 | 苏州玄陶商务咨询有限公司 | A kind of synthetism fixing piece, Orthopedic fixation device and preparation method thereof |
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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: 20090225 Termination date: 20100530 |