CN201299643Y - Intramedullary nail extractor - Google Patents
Intramedullary nail extractor Download PDFInfo
- Publication number
- CN201299643Y CN201299643Y CNU2008202249589U CN200820224958U CN201299643Y CN 201299643 Y CN201299643 Y CN 201299643Y CN U2008202249589 U CNU2008202249589 U CN U2008202249589U CN 200820224958 U CN200820224958 U CN 200820224958U CN 201299643 Y CN201299643 Y CN 201299643Y
- Authority
- CN
- China
- Prior art keywords
- bar
- square
- projection
- intramedullary nail
- extractor
- 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 an intramedullary nail extractor comprising a straight bar and an assister bar, wherein the two bars are hinged into a whole, opposite inner side surfaces of the front ends of the two bars are respectively provided with a semi-circular projection and a square projection, the square projection is a square whose side length is 2 mm, and is matched with the size of a gap of the tail end of an intramedullary nail, the thickness of the semi-circular projection is about 1.5 mm, and is located on the near section of the rectangular projection, the central portion thereof is provided with a semi-circular gap, and the rear end of the straight bar is linked with a hitting device. The use of the extractor is not limited by the thread space standard of the intramedullary nail, and the extractor is suitable for the intramedullary nails with various thread apertures, has very good versatility and convenience, and has higher spreading and application values.
Description
Technical field
This utility model belongs to a kind of orthopedic medical device, particularly a kind of intramedullary nail extractor that is used to pull out intramedullary pin.
Background technology
In orthopaedics is clinical, the end that is used for the fixed intramedullary pin of orthopaedics has a screwed hole, when getting intramedullary pin, generally be the end to be had with the bar of extracting of the corresponding screw thread of above-mentioned screwed hole screw in above-mentioned screwed hole, thereby with intramedullary pin with take out bar and connect as one, and then drag and extract bar intramedullary pin is taken out of.But in practical operation, above-mentioned screwed hole ratio is easier to damage and often makes that extracting bar can't connect, and the screwed hole specification of each producer's intramedullary pin and not quite identical now, and this just causes extracting bar can not be general, brought many puzzlements for actual the use.
Summary of the invention
The purpose of this utility model is with regard to being at the defective of above-mentioned prior art and provide a kind of versatility good and simple and practical omnipotent intramedullary nail extractor.
Its technical solution is as follows: intramedullary nail extractor, comprise straight-bar and assister bar, two bars are articulated as one, two bar front end opposed inside faces respectively have a half-circle projection and a square protrusion, and square protrusion is the square that the length of side is 2mm, adapt with the square breach size of intramedullary pin tail end, the thick about 1.5mm of half-circle projection, be positioned near section of square protrusion, its central part has a semicircular breach, and the rear end of straight-bar connects knocking device.
This utility model in use, earlier with the caudad loosening about 1.5mm of the screw thread sealing cap of intramedullary pin end, again the half-circle projection of front end of the present invention and square protrusion are embedded respectively in the square breach of 1.5mm space between screw thread sealing cap and the intramedullary pin and intramedullary pin tail end, tighten the fastening bolt at this utility model middle part, knocking device is impacted to far-end, intramedullary pin can be pulled out smoothly.
The utility model is described in further detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a far-end axonometric chart of the present utility model.
The specific embodiment
As shown in Figure 1 and Figure 2, this utility model comprises straight-bar 1 and assister bar 2, two bars are articulated as one, two bar front end opposed inside faces respectively have a semicircular projection 6 and a square protrusion 7, and square protrusion is the square that the length of side is 2mm, adapt with the square breach size of intramedullary pin tail end, the thick about 1.5mm of half-circle projection, be positioned near section of square protrusion, its central part has a semicircular breach, and the rear end of straight-bar connects knocking device 3.
This utility model in use, earlier with the caudad loosening about 1.5mm of the screw thread sealing cap 5 of intramedullary pin 4 ends, again the half-circle projection 6 of front end of the present invention and square protrusion 7 are embedded respectively in the square breach of 1.5mm circular void between screw thread sealing cap 5 and the intramedullary pin 4 and intramedullary pin tail end, tighten the fastening bolt at this utility model middle part, knocking device 3 is impacted to far-end, intramedullary pin 4 can be pulled out smoothly.
Claims (1)
1, intramedullary nail extractor, comprise straight-bar and assister bar, two bars are articulated as one, two bar front end opposed inside faces respectively have a half-circle projection and a square protrusion, and square protrusion is the square that the length of side is 2mm, adapt with the breach size of intramedullary pin tail end, the thick about 1.5mm of half-circle projection, be positioned near section of square protrusion, its central part has a semicircular breach, and the rear end of straight-bar connects knocking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202249589U CN201299643Y (en) | 2008-12-04 | 2008-12-04 | Intramedullary nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202249589U CN201299643Y (en) | 2008-12-04 | 2008-12-04 | Intramedullary nail extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201299643Y true CN201299643Y (en) | 2009-09-02 |
Family
ID=41083252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202249589U Expired - Fee Related CN201299643Y (en) | 2008-12-04 | 2008-12-04 | Intramedullary nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201299643Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264704A (en) * | 2016-09-18 | 2017-01-04 | 无锡市第九人民医院 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
| CN111839706A (en) * | 2020-06-22 | 2020-10-30 | 天衍医疗器材有限公司 | Short cap nail holder |
-
2008
- 2008-12-04 CN CNU2008202249589U patent/CN201299643Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264704A (en) * | 2016-09-18 | 2017-01-04 | 无锡市第九人民医院 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
| CN106264704B (en) * | 2016-09-18 | 2019-01-08 | 无锡市第九人民医院 | Conical points sharp tackle head extractor for thread-stripping screws with press fastening device |
| CN111839706A (en) * | 2020-06-22 | 2020-10-30 | 天衍医疗器材有限公司 | Short cap nail holder |
| CN111839706B (en) * | 2020-06-22 | 2021-09-21 | 天衍医疗器材有限公司 | Short cap nail holder |
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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: 20090902 Termination date: 20101204 |