CN101756748A - Intramedullary nail extractor - Google Patents
Intramedullary nail extractor Download PDFInfo
- Publication number
- CN101756748A CN101756748A CN200810158351A CN200810158351A CN101756748A CN 101756748 A CN101756748 A CN 101756748A CN 200810158351 A CN200810158351 A CN 200810158351A CN 200810158351 A CN200810158351 A CN 200810158351A CN 101756748 A CN101756748 A CN 101756748A
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- CN
- China
- Prior art keywords
- bar
- square
- intramedullary nail
- extractor
- intramedullary pin
- 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.)
- Pending
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Abstract
The invention discloses an intramedullary nail extractor, which comprises 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 square projection, the square projection is a cube the side length of which is 2 mm, and is matched with the size of a square gap of the tail end of an intramedullary nail, and the rear end of the straight bar is linked with a knocking device. The use of the extractor is not limited by the standard of the thread spare 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
The invention 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
Purpose of the present invention is with regard to being at the defective of above-mentioned prior art and provide a kind of versatility good and simple and practical bone nail extractor.
Its technical solution is as follows: bone nail extractor, comprise straight-bar and assister bar, two bars are articulated as one, two bar front end opposed inside faces respectively have a square protrusion, square protrusion is the square that the length of side is 2mm, adapt with the square breach size of intramedullary pin tail end, the rear end of straight-bar connects knocking device.
The present invention in the square breach of intramedullary pin tail end below the square protrusion embedding screw thread sealing cap of front end of the present invention, tightens the fastening bolt at the present invention middle part in use, and knocking device is impacted to far-end, intramedullary pin can be pulled out smoothly.Use of the present invention is not subjected to the restriction of the empty specification of intramedullary pin screw thread, and the intramedullary pin of applicable various tapped bores has excellent universality, possesses higher popularization and application values.
The invention will be further described below in conjunction with accompanying drawing:
Description of drawings
Figure is a structural representation of the present invention.
The specific embodiment
As shown in the figure, the present invention includes straight-bar 1 and assister bar 2, two bars are articulated as one, two bar front end opposed inside faces respectively have a square protrusion 4, square protrusion is the square that the length of side is 2mm, adapts with the square breach size of intramedullary pin 5 tail ends, and the rear end of straight-bar connects knocking device 3.
The present invention embeds the square protrusion 4 of front end of the present invention in the square breach of intramedullary pin 5 tail ends of screw thread sealing caps 6 belows in use, tightens the fastening bolt at the present invention middle part, and knocking device 3 is impacted to far-end, intramedullary pin can be pulled out smoothly.
Claims (1)
1. bone nail extractor comprises straight-bar and assister bar, and two bars are articulated as one, two bar front end opposed inside faces respectively have a square protrusion, square protrusion is the square that the length of side is 2mm, adapts with the breach size of intramedullary pin tail end, and the rear end of straight-bar connects knocking device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810158351A CN101756748A (en) | 2008-10-31 | 2008-10-31 | Intramedullary nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810158351A CN101756748A (en) | 2008-10-31 | 2008-10-31 | Intramedullary nail extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101756748A true CN101756748A (en) | 2010-06-30 |
Family
ID=42488239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810158351A Pending CN101756748A (en) | 2008-10-31 | 2008-10-31 | Intramedullary nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101756748A (en) |
-
2008
- 2008-10-31 CN CN200810158351A patent/CN101756748A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100630 |