CN203861336U - Universal intramedullary nail extractor - Google Patents
Universal intramedullary nail extractor Download PDFInfo
- Publication number
- CN203861336U CN203861336U CN201420271687.8U CN201420271687U CN203861336U CN 203861336 U CN203861336 U CN 203861336U CN 201420271687 U CN201420271687 U CN 201420271687U CN 203861336 U CN203861336 U CN 203861336U
- Authority
- CN
- China
- Prior art keywords
- intramedullary nail
- taper
- extractor
- intramedullary
- screw rod
- 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 universal intramedullary nail extractor which comprises a screw, a taper-shaped connecting rod and a circular handle. The back end of the screw is connected with the circular handle through the taper-shaped connecting rod, a taper-shaped head integrally molded with the front end of the screw is arranged at the front end of the screw, external threads clamped into inner wall threads at the tail of an intramedullary nail are arranged on the taper-shaped head, and a circular through hole for a ripping bar to penetrate through is formed in the connecting rod. The front end of the screw is arranged to be the taper-shaped head with the external threads, intramedullary nails which are different in inner diameter and are produced by different manufacturers can be smoothly extracted out under the condition that the cross section is not aligned, the adaptability of the intramedullary nail extractor is improved, the taper-shaped head can be inserted into the tail of the intramedullary nail in any type, and the intramedullary nail can be extracted out at will. Meanwhile, the circular through hole for the ripping bar to penetrate through is formed in the connecting rod, when the tape head of the extractor needs to be clamped into the intramedullary nail, the ripping bar can be inserted into the through hole, then the threads are screwed at the tail of the intramedullary nail, and the intramedullary nail and the extractor are fastened together.
Description
Technical field
This utility model belongs to technical field of medical instruments, relates to a kind of general-purpose intramedullary nail extractor.
Background technology
Along with the development of technique for fixing in intramedullary pin, this technology has been widely used in medical domain.Fixing in so-called marrow, refer to built-in, the inner matter with some strength good with human compatibility of pulp cavity at bone far-end or near-end, to reach the fixing method of fracture end.
In intramedullary pin, fixation application is existing historical for many years in fracture internal fixation treatment.In intramedullary pin, fix the fracture that not only can be applicable to straight shape bone, also can be used for the fracture of slight arc bone, reach 3 fixing objects, and can carry out in early days functional exercise, in clinical practice, showing very strong vitality.
After intramedullary pin internal fixation operation, need to, according to patient's recovery situation, arrange to take out the operation of intramedullary pin.At present, be mainly by the inner thread phase interlock with intramedullary pin afterbody by the screw thread on extractor top, the mode of extracting intramedullary pin, takes out intramedullary pin.
But, the present inventor's discovery, in operation practical operation, due to the restriction of operative incision and operation position, extractor placement direction is often difficult to make the accurate interlock of screw thread, smoothly nail pulling.And extractor is thicker, need enough appearing just to insert.And the intramedullary pin internal diameter that domestic current different manufacturers is produced is different, about 5mm-12mm not etc., does not cause while taking-up and must use the supporting apparatus of former factory, and the scope of application of this intramedullary nail extractor is restricted, and in the time taking out, cross section must be aimed at and could take out, and causes taking-up not smooth.
And due to the intramedullary pin of each hospital application different manufacturers, the intramedullary pin that different manufacturers provides is slightly variant in model, specification.Examine (internal fixation operation) hospital while getting inside-fixture at non-head, outer court is preoperative cannot be determined intramedullary pin product type, specification, be dispatched from the factory period by X-ray, follows closely tail bore, screw specification.Therefore, when interior fixing taking-up operation, usually because apparatus does not mate, there is being difficult to the difficult situation of taking-up.
Utility model content
This utility model, in order to solve the problems of the technologies described above, provides a kind of general-purpose intramedullary nail extractor, can the in the situation that of misalignment cross section, take out smoothly the different intramedullary pin of internal diameter that different manufacturers is produced, and has improved the adaptability of this intramedullary nail extractor.
This utility model is to be achieved through the following technical solutions:
A kind of general-purpose intramedullary nail extractor, comprise screw rod, taper connection bar and round handle, described spiro rod rear end is connected with round handle by taper connection bar, described screw front end is provided with conical nose integrated with it, on conical nose, be provided with the external screw thread in the inner thread that is engaged to intramedullary pin afterbody, on described taper connection bar, offer the manhole penetrating for ripping bar.
Two symmetrical sides of described screw rod offer respectively draw-in groove.
On the conical nose of described screw rod, also offer groove.
Described external screw thread total length is 25mm.
The minimum diameter of described conical nose is 5mm, and maximum gauge is 15mm.
Compared with prior art, the utlity model has following useful technique effect:
The general-purpose intramedullary nail extractor that this utility model provides, by screw front end being arranged to externally threaded conical nose, can overcome in actual operation operation, the extractor placement direction that cross section causes of can not accurately aiming at bringing due to the restriction of operative incision and operation position is often difficult to make the accurate interlock of screw thread, the problem of nail pulling smoothly, this conical nose can insert in the intramedullary pin afterbody of disposable type, therefore can arbitrarily take out intramedullary pin.Thereby this extractor is a universal extractor, it can be common to the intramedullary pin that takes out various companies, all size and various brands.Simultaneously, on connecting rod, offer the manhole penetrating for ripping bar, when need to snapping in intramedullary pin by the conical nose of extractor, band can, by insert ripping bar in this hole, then its screw thread be screwed on intramedullary pin afterbody, and intramedullary pin and extractor are fastened to one.
Further, offer respectively draw-in groove by two symmetrical sides at screw rod, thereby can use spanner to snap on extractor, this intramedullary pin is taken out.
Brief description of the drawings
The general-purpose intramedullary nail extractor structural representation that Fig. 1 provides for this utility model.
Wherein: 1 is hands handle; 2 is connecting rod; 3 is screw rod; 4 is external screw thread; 5 is manhole; 6 is draw-in groove.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail:
Referring to Fig. 1, a kind of general-purpose intramedullary nail extractor, comprise screw rod 3, taper connection bar 2 and round handle 1, described screw rod 3 rear ends are connected with round handle 1 by taper connection bar 2, described screw rod 3 front ends are provided with conical nose integrated with it, the minimum diameter of described conical nose is 5mm, maximum gauge is 15mm, on conical nose, be provided with the external screw thread 4 in the inner thread that is engaged to intramedullary pin afterbody, described external screw thread 4 total lengths are 25mm, on described connecting rod 2, offer the manhole 5 penetrating for ripping bar, two symmetrical sides of described screw rod 3 offer respectively draw-in groove 6, spanner is snapped on draw-in groove 6, turning spanner takes out intramedullary pin, and also offer groove on the conical nose of described screw rod 3.Make because screw rod 3, taper connection bar 2 and round handle 1 adopt medical stainless steel material, therefore hardness is high, and this conical nose carries external screw thread, and therefore can quick random be inserted in intramedullary pin, takes out intramedullary pin.
Using method of the present utility model:
By the inner thread phase interlock with intramedullary pin afterbody through operative incision with externally threaded conical nose of this intramedullary nail extractor, then snap on draw-in groove intramedullary pin is taken out by spanner.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of this utility model spirit and scope; this utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed this utility model.The claimed scope of this utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a general-purpose intramedullary nail extractor, it is characterized in that, comprise screw rod (3), taper connection bar (2) and round handle (1), described screw rod (3) rear end is connected with round handle (1) by taper connection bar (2), described screw rod (3) front end is provided with conical nose integrated with it, on conical nose, be provided with the external screw thread (4) in the inner thread that is engaged to intramedullary pin afterbody, on described taper connection bar (2), offer the manhole (5) penetrating for ripping bar.
2. general-purpose intramedullary nail extractor according to claim 1, is characterized in that, two symmetrical sides of described screw rod (3) offer respectively draw-in groove (6).
3. general-purpose intramedullary nail extractor according to claim 1, is characterized in that, on the conical nose of described screw rod (3), also offers groove.
4. general-purpose intramedullary nail extractor according to claim 1, is characterized in that, described external screw thread (4) total length is 25mm.
5. general-purpose intramedullary nail extractor according to claim 1, is characterized in that, the minimum diameter of described conical nose is 5mm, and maximum gauge is 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271687.8U CN203861336U (en) | 2014-05-26 | 2014-05-26 | Universal intramedullary nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271687.8U CN203861336U (en) | 2014-05-26 | 2014-05-26 | Universal intramedullary nail extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203861336U true CN203861336U (en) | 2014-10-08 |
Family
ID=51642329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420271687.8U Expired - Fee Related CN203861336U (en) | 2014-05-26 | 2014-05-26 | Universal intramedullary nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203861336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961176A (en) * | 2014-05-26 | 2014-08-06 | 陈军 | General intramedullary nail extractor |
-
2014
- 2014-05-26 CN CN201420271687.8U patent/CN203861336U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961176A (en) * | 2014-05-26 | 2014-08-06 | 陈军 | General intramedullary nail extractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160520 Address after: 710000 No. 17 West Changle Road, Xincheng District, Shaanxi, Xi'an Patentee after: The Fourth Military Medical University of the Chinese People's Liberation Army Address before: High tech Zone 710000 Shaanxi city of Xi'an Province Tang Yan Road No. 11 I Plaza Garden will be 3 Building 3 unit 1412 room Patentee before: Chen Jun |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20170526 |