CN201492492U - Orthopedic medical anti-fall fastening screw - Google Patents
Orthopedic medical anti-fall fastening screw Download PDFInfo
- Publication number
- CN201492492U CN201492492U CN2009200286465U CN200920028646U CN201492492U CN 201492492 U CN201492492 U CN 201492492U CN 2009200286465 U CN2009200286465 U CN 2009200286465U CN 200920028646 U CN200920028646 U CN 200920028646U CN 201492492 U CN201492492 U CN 201492492U
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- screw
- nail
- medical anti
- nail body
- frustum
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Abstract
The utility model discloses an orthopedic medical anti-fall fastening screw which comprises a screw body (1) and a screw cap (2). The screw cap (2) is fixedly welded at the top end of the screw body (1) which is provided with threads. The orthopedic medical anti-fall fastening screw is characterized in that the top face of the screw cap (2) is provided with a star groove (3), and the screw body (1) is provided with a frustum segment (4). With the orthopedic medical anti-fall fastening screw, as the screw body is provided with a frustum segment, bone can grow into the frustum segment during long-term fixed application, and the screw can be firmly combined with the bone tissue without loosening the screw, thereby cross sections of fracture can be prevented from easy disconnection or mal-position. In addition, the screw cap is provided with the star groove, thereby increasing the stress area without screw release during the process of twisting the screw into bone holes.
Description
Technical field
This utility model relates to a kind of orthopaedic medical treatment utensil, the improvement of the medical trip bolt of particularly a kind of orthopaedics, the medical anti-down trip bolt of specifically a kind of orthopaedics.
Background technology
In hospital orthopedics, fracture patient is modal, is exactly to adopt trip bolt to carry out internal fixation usually to fracture patient, and trip bolt is a skeletal fixation device commonly used in the bone surgery.The trip bolt that uses comprises that the nail body and the head of a nail constitute at present, the head of a nail is fixed as one with the welding of nail body, be provided with screw thread on the nail body, the deficiency that this trip bolt exists is: in secular internal fixation, produce loosening easily in osseous tissue, be not easy and the osseous tissue strong bonded, fracture face is thrown off or dislocation, cause the synthetism failure, if this kind situation occurs, then need operative reduction again, bring bigger misery to patient; In addition, owing to become the yi word pattern shallow grooves on the nut of existing trip bolt, be screwed in the process in bone hole at trip bolt, the stress surface of trip bolt is on nut, and the instrument that is screwed into screw is easy to slippage from the yi word pattern shallow grooves, makes troubles to operation.
Summary of the invention
The purpose of this utility model be to provide a kind of can be easily and the osseous tissue strong bonded, be difficult for producing loosening and fracture face is thrown off or the phenomenon of dislocation; In addition, be screwed in the process in bone hole, also can not produce the medical anti-down trip bolt of orthopaedics of slip phenomenon at screw.
For reaching above purpose, the technical scheme that this utility model adopted is: the medical anti-down trip bolt of this orthopaedics, constitute by the nail body and the head of a nail, the head of a nail is fixedly welded on nail body top, on the nail body, be provided with screw thread, it is characterized in that on the end face of the head of a nail, being provided with star-shaped groove, on the nail body, be provided with the frustum joint.
This utility model is also implemented by following measure: the end face diameter of described frustum joint is identical with the overall diameter of nail body, and the bottom surface diameter is than the little 1-2mm of overall diameter of nail body, and the frustum joint can be established 2-5, and nail body, the head of a nail are that rustless steel is made.
The beneficial effects of the utility model are: compare with existing trip bolt, owing to be provided with the frustum joint on the nail body, in secular fixation application, sclerotin can be grown in the frustum joint, make the nail body be difficult for producing with the osseous tissue strong bonded and become flexible, fracture face also is difficult for throwing off or dislocation; In addition,, increased lifting surface area, be screwed in the process in bone hole, also can not produce slippage at screw because nut is provided with star-shaped groove.
Description of drawings
Fig. 1 looks sketch map for this utility model structure master.
Fig. 2 is this utility model structure schematic top plan view.
The specific embodiment
Make this utility model with reference to accompanying drawing 1,2.The medical anti-down trip bolt of this orthopaedics is made of the nail body 1 and the head of a nail 2, and the head of a nail 2 is fixedly welded on nail body 1 top, is provided with screw thread on nail body 1, it is characterized in that being provided with on the end face of the head of a nail 2 star-shaped groove 3, is provided with frustum joint 4 on nail body 1.
The end face diameter of described frustum joint 4 is identical with the overall diameter of nail body 1, and the bottom surface diameter is than the little 1-2mm of overall diameter of nail body 1, and frustum joint 4 can be established 2-5, and nail body 1, the head of a nail 2 are made for rustless steel.
Claims (2)
1. medical anti-down trip bolt of orthopaedics, be made of the nail body (1) and the head of a nail (2), the head of a nail (2) is fixedly welded on nail body (1) top, is provided with screw thread on nail body (1), it is characterized in that on the end face of the head of a nail (2), being provided with star-shaped groove (3), on nail body (1), be provided with frustum joint (4).
2. the medical anti-down trip bolt of orthopaedics according to claim 1 is characterized in that the end face diameter of described frustum joint (4) is identical with the overall diameter of nail body (1), and the bottom surface diameter is than the little 1-2mm of overall diameter of nail body (1), and frustum joint (4) can be established 2-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200286465U CN201492492U (en) | 2009-06-30 | 2009-06-30 | Orthopedic medical anti-fall fastening screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200286465U CN201492492U (en) | 2009-06-30 | 2009-06-30 | Orthopedic medical anti-fall fastening screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201492492U true CN201492492U (en) | 2010-06-02 |
Family
ID=42435702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200286465U Expired - Fee Related CN201492492U (en) | 2009-06-30 | 2009-06-30 | Orthopedic medical anti-fall fastening screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201492492U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102429716A (en) * | 2011-12-19 | 2012-05-02 | 北京爱康宜诚医疗器材股份有限公司 | Integrated-type internal set screw for vertebral column |
| 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 |
| CN105877827A (en) * | 2014-11-20 | 2016-08-24 | 宋若怡 | Sliding-preventing kirschner wire |
-
2009
- 2009-06-30 CN CN2009200286465U patent/CN201492492U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102429716A (en) * | 2011-12-19 | 2012-05-02 | 北京爱康宜诚医疗器材股份有限公司 | Integrated-type internal set screw for vertebral column |
| 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 |
| CN105877827A (en) * | 2014-11-20 | 2016-08-24 | 宋若怡 | Sliding-preventing kirschner wire |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Huang Quan Document name: Notification to Go Through Formalities of Registration |
|
| 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: 20100602 Termination date: 20100630 |