CN202589640U - Lock-including intramedullary nail extractor - Google Patents
Lock-including intramedullary nail extractor Download PDFInfo
- Publication number
- CN202589640U CN202589640U CN 201220191250 CN201220191250U CN202589640U CN 202589640 U CN202589640 U CN 202589640U CN 201220191250 CN201220191250 CN 201220191250 CN 201220191250 U CN201220191250 U CN 201220191250U CN 202589640 U CN202589640 U CN 202589640U
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- CN
- China
- Prior art keywords
- expansion sleeve
- intramedullary nail
- screw rod
- head
- lock
- 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 lock-including intramedullary nail extractor, which comprises an operating rod, a screw rod and an expansion sleeve, wherein one end of the screw rod is provided with a screw thread; a reducing head of which the upper part is smaller and the lower part is larger is formed at the other end of the screw rod; the expansion sleeve is inserted into the screw rod, and an elastic head with an external thread is formed at one end of the expansion sleeve together with the reducing head; and when the screw rod is driven to move upwards relative to the expansion sleeve by using an operating piece, the reducing head can be used for strutting an elastic head of the expansion sleeve. The lock-including intramedullary nail extractor can be suitable for intramedullary nails of various models, is simple in structure, is convenient to operate, and is very practical; and the connection between the extractor and the intramedullary nail is not influenced even though a screw thread on the inner wall of the intramedullary nail is damaged.
Description
Technical field
This utility model relates to medical domain, is a kind of instrument that is applicable to that all size intramedullary nail with lock takes out.
Background technology
Along with the continuous development of intramedullary nail with lock internal fixation technology, this technology has become the prefered method of the treatment adult shaft fracture of generally acknowledging at present.After the union of fracture; Need operation to take out intramedullary pin; But because the intramedullary pin that different manufacturers provides is all variant on model, specification; Some patients usually need the over a great distance hospital surgical taking-up originally of getting back to, and the patient that the local hospitals of other strong requests take out then usually runs in operation process and takes out difficulty.Taking out reason of difficulty is that the intramedullary pin head of a nail diameter that each producer designs differs, and the extractor of design only is suitable for the intramedullary pin of own manufacturer production.
The utility model content
The main purpose of this utility model is to overcome the above-mentioned shortcoming of prior art, proposes a kind of intramedullary nail with lock extractor that adapts to various intramedullary pin specifications.
This utility model adopts following technical scheme:
The intramedullary nail with lock extractor; It is characterized in that: comprise controls, screw rod and expansion sleeve; Said screw rod one end is provided with screw thread, and the other end is formed with up-small and down-big reducing head, and said expansion sleeve is arranged on this screw rod and the one of which end cooperates the reducing capitiform to become to have externally threaded elastic head; Control screw rod relative expansion cover when said controls and move up, said reducing head can strut the elastic head of expansion sleeve.
Further, said reducing head is a taper reducing head.
Further, said screw diameter is less than the inner diameter of intramedullary pin.
Further, said controls is a nut.
Further, the said expansion sleeve end that is positioned at said reducing head is formed with some breach that extend along reducing head length degree direction.
Further, said expansion sleeve cross section is a hexagon.
Can know by above-mentioned description, compared with prior art, the utlity model has following beneficial effect this utility model:
The intramedullary nail extractor of this utility model can be arranged on the injection-drawing out device commonly used, realizes the function that intramedullary pin is taken out.During use; The screw rod reducing head that is with expansion sleeve is inserted the intramedullary pin afterbody, fix expansion sleeve with instrument, the controls on the rotary screw is a nut; Make screw rod relative expansion cover move up; This moment, the expansion sleeve elastic head was strutted, and swivel nut imbeds the intramedullary pin inwall fully up to expansion sleeve, and the reuse injection-drawing out device is extracted intramedullary pin.This utility model is applicable to the intramedullary pin of various models, and simple in structure, easy to operate, even the screw thread of intramedullary pin inwall is damaged, also do not influence being connected between extractor and the intramedullary pin, and is very practical.
Description of drawings
Fig. 1 is the decomposing schematic representation of this utility model;
Fig. 2 is the overall schematic of this utility model.
The specific embodiment
Below this utility model is done further to describe through the specific embodiment.
With reference to Fig. 1, Fig. 2; The intramedullary nail with lock extractor comprises controls 1, screw rod 2 and expansion sleeve 3, and screw rod 2 one ends are provided with screw thread 7; The other end is formed with up-small and down-big reducing head 4; Expansion sleeve 3 is arranged on this screw rod 2 and the one of which end cooperates the reducing capitiform to become to have externally threaded elastic head 5, controls screw rod 2 relative expansions cover 3 when controls 1 and moves up, and reducing head 4 can strut the elastic head 5 of expansion sleeve 3.Wherein, Reducing head 4 can be a taper reducing head; The end that expansion sleeve 3 is positioned at this taper reducing head is formed with 3 breach 6 that extend along reducing head 4 length directions, thereby forms the elastic head 5 that can be strutted by reducing head 4, and to be that hexagon is convenient fix with instrument in expansion sleeve 3 cross sections.Screw rod 2 diameters make screw rod can insert intramedullary pin afterbody inwall smoothly less than the inner diameter of intramedullary pin.Controls 1 is a nut, is arranged at screw flight 7 positions.The extractor of this utility model can be arranged on the injection-drawing out device commonly used, realizes function that intramedullary pin is taken out, and wherein the end of screw rod 2 with screw thread is used to connect injection-drawing out device.
This utility model in use; The screw rod reducing head that is with expansion sleeve is inserted the intramedullary pin afterbody, can fix expansion sleeve with instrument, the controls on the rotary screw is a nut; Make screw rod relative expansion cover move up; This moment, the expansion sleeve elastic head was strutted, and swivel nut imbeds the intramedullary pin inwall fully up to expansion sleeve, and the reuse injection-drawing out device is extracted intramedullary pin.This utility model is applicable to the intramedullary pin of various models, and simple in structure, easy to operate, even the screw thread of intramedullary pin inwall is damaged, also do not influence being connected between extractor and the intramedullary pin.
The above-mentioned specific embodiment that is merely this utility model, but the design concept of this utility model is not limited thereto allly utilizes this design that this utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading this utility model protection domain.
Claims (6)
1. intramedullary nail with lock extractor; It is characterized in that: comprise controls, screw rod and expansion sleeve; Said screw rod one end is provided with screw thread, and the other end is formed with up-small and down-big reducing head, and said expansion sleeve is arranged on this screw rod and the one of which end cooperates the reducing capitiform to become to have externally threaded elastic head; Control screw rod relative expansion cover when said controls and move up, said reducing head can strut the elastic head of expansion sleeve.
2. intramedullary nail with lock extractor as claimed in claim 1 is characterized in that: said reducing head is a taper reducing head.
3. intramedullary nail with lock extractor as claimed in claim 2 is characterized in that: said screw diameter is less than the inner diameter of intramedullary pin.
4. intramedullary nail with lock extractor as claimed in claim 2 is characterized in that: said controls is a nut.
5. like claim 3 or 4 described intramedullary nail with lock extractors, it is characterized in that: the end that said expansion sleeve is positioned at said reducing head is formed with some breach that extend along reducing head length degree direction.
6. intramedullary nail with lock extractor as claimed in claim 5 is characterized in that: said expansion sleeve cross section is a hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220191250 CN202589640U (en) | 2012-05-02 | 2012-05-02 | Lock-including intramedullary nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220191250 CN202589640U (en) | 2012-05-02 | 2012-05-02 | Lock-including intramedullary nail extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202589640U true CN202589640U (en) | 2012-12-12 |
Family
ID=47307224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220191250 Expired - Fee Related CN202589640U (en) | 2012-05-02 | 2012-05-02 | Lock-including intramedullary nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202589640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247981A (en) * | 2017-07-13 | 2019-01-22 | 香港大学 | Suitable for removing the removal equipment of bone implant terminal part from bone tissue |
-
2012
- 2012-05-02 CN CN 201220191250 patent/CN202589640U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247981A (en) * | 2017-07-13 | 2019-01-22 | 香港大学 | Suitable for removing the removal equipment of bone implant terminal part from bone tissue |
| CN109247981B (en) * | 2017-07-13 | 2023-10-31 | 香港大学 | Extraction instrument adapted to remove a distal portion of a bone implant from bone tissue |
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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: 20121212 Termination date: 20130502 |