CN2894638Y - Auxiliary screw for locked intramedullary nail far end lockhole positioning - Google Patents
Auxiliary screw for locked intramedullary nail far end lockhole positioning Download PDFInfo
- Publication number
- CN2894638Y CN2894638Y CNU2006201015344U CN200620101534U CN2894638Y CN 2894638 Y CN2894638 Y CN 2894638Y CN U2006201015344 U CNU2006201015344 U CN U2006201015344U CN 200620101534 U CN200620101534 U CN 200620101534U CN 2894638 Y CN2894638 Y CN 2894638Y
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- CN
- China
- Prior art keywords
- additional screws
- screw
- magnet
- positioning
- intramedullary nail
- 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 relates to an assisted bolt for positioning of distal lock hole of interlocking medullary nail without screw cap, with the diameter little shorter than that of distal medullary nail. The bottom side of the assisted bolt is hollow, and is provided with a female screw thread reserved to the male screw. The assisted bolt is provided with magnetism, and the hollow section may be provided with a magnet to replace the probe. While used together with correspond removal instruments, the positioning of magnetic force or electromagnetism for distal lock hole of solid interlocking medullary nail can be realized conveniently.
Description
[technical field]
This utility model relates to the orthopedic medical device technical field, relates to the aiming positioner of intramedullary nail with lock far-end nail hole electromagnetism or magnetic force.
[background technology]
At present, intramedullary nail with lock internal fixation technology is widely used clinically, but the location in intra medullary nail far-end nail hole is the technical problem of difficult operation in the operation, fail to be solved well always, owing to the inaccurate phenomenon of boring failure that causes in location, nail hole happens occasionally, thereby the prolongation operating time increases patient's misery, influences surgical effect.For improving the boring accuracy, adopt the X-ray location usually, not only complicated operation also can cause radiation damage to patient and doctor.For addressing the above problem, the patent of application number 02158691.8 has provided a kind of area of computer aided intra medullary nail far-end locking system, though can improve accurate positioning, complex structure, the manufacturing cost height is difficult to penetration and promotion.For addressing the above problem, the patent of application number 200420039024.X has provided the method that magnetic force location, application number 200420024496.8 have provided electromagnetic location.But above-mentioned two kinds of methods all have a common defective, can't be applied to solid intramedullary nail with lock, because must insert probe in hollow intramedullary pin, the front end of probe has Magnet, utilize this Magnet could locate a nail of intra medullary nail far-end hole.
[summary of the invention]
The purpose of this utility model is exactly at the deficiencies in the prior art, a kind of additional screws of simple in structure, easy to operate band magnetic force is provided, thereby enlarge above-mentioned two kinds of patented methods: application number 200420039024.X, 200420024496.8 the scope of application make it can be conveniently used in solid intramedullary nail with lock.
For achieving the above object, the technical solution adopted in the utility model is: it is made up of additional screws and supporting taking-up instrument, its construction features is a not tail cap of this additional screws, length is slightly less than the diameter of far-end intramedullary pin, the rear of additional screws is hollow, and the tapping female thread opposite with the external screw thread direction, the head that takes out instrument also is threaded also and can be spirally connected with the female thread of this additional screws.Its construction features also has this additional screws to have magnetic, by in the locking nail hole that screws into solid intra medullary nail far-end (this locking nail hole is tap out in advance), makes this additional screws play the positioning action that has magnet probe in advance.Finish screwing in the tail end of additional screws by screw taking-up instrument again behind the location and screw, continue rotation and can withdraw from this additional screws, squeeze into the pinning of this locking nail hole again.
In this structure, additional screws must have magnetic, and it solve to send out method: 1, cylindrical Magnet is put into the hollow section of this screw, and utilized the closed screw of a weak point to fix at tail end, prevent that it from deviating from; 2, utilize this screw of material manufacture that contains Magnet or irony.Above-mentioned two kinds of methods are good with first method.
The beneficial effects of the utility model are to finish the magnetic force or the electromagnetic location of the distal locking nail hole of solid intramedullary nail with lock easily by this screw and supporting taking-up instrument, also can be applicable to the hollow arbor braid lock intramedullary nail simultaneously.
[description of drawings]
Fig. 1 is this utility model additional screws sectional side elevation;
State diagram when Fig. 2 is use;
Among the figure: 1, additional screws, 2, intramedullary pin, 3, locking nail hole, 4, screw takes out instrument, 5, the tail end of screw, 6, cylinder Magnet, 7, closed screw.
[specific embodiment]
At first at external locking nail hole 3 of far-end that additional screws 1 is screwed in intramedullary pin 2, after intramedullary pin 2 squeezed into medullary cavity, utilize number of patent application: the position that 20042003902.X or 200420024496.8 instrument and method can be determined locking nail hole 3, on cortical bone, hole, screw is taken out the tail end 5 that instrument 4 screws in screw 1, screw the back and continue to rotate and this screw can be withdrawed from safely, finish inserting of pinning then.
Claims (5)
1, a kind of localized additional screws of intramedullary nail with lock distal locking nail hole that is used for, it is characterized in that: this additional screws is tail cap not, and length is slightly less than the diameter of far-end intramedullary pin, and the rear of additional screws is hollow, and the female thread opposite with the external screw thread direction arranged.
2, additional screws according to claim 1, it is characterized in that: it has magnetic.
3, additional screws according to claim 2 is characterized in that: cylindrical Magnet is arranged in its hollow section, and have the closed screw of a weak point to fix, prevent that magnet piece from deviating from.
4, additional screws according to claim 2 is characterized in that: it also can be directly with the material manufacture that contains Magnet or irony.
5, according to claim 3 or 4 described additional screws, it is characterized in that: the tail end of additional screws can with take out the instrument bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201015344U CN2894638Y (en) | 2006-03-09 | 2006-03-09 | Auxiliary screw for locked intramedullary nail far end lockhole positioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201015344U CN2894638Y (en) | 2006-03-09 | 2006-03-09 | Auxiliary screw for locked intramedullary nail far end lockhole positioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2894638Y true CN2894638Y (en) | 2007-05-02 |
Family
ID=38064217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201015344U Expired - Fee Related CN2894638Y (en) | 2006-03-09 | 2006-03-09 | Auxiliary screw for locked intramedullary nail far end lockhole positioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2894638Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104665913A (en) * | 2013-11-26 | 2015-06-03 | 财团法人工业技术研究院 | Bionic fixing device and pulling-out device thereof |
| US9770276B2 (en) | 2013-11-26 | 2017-09-26 | Industrial Technology Research Institute | Bionic fixing apparatus |
| US10064737B2 (en) | 2015-12-07 | 2018-09-04 | Industrial Technology Research Institute | Implant device for osseous integration |
| US10357297B2 (en) | 2013-11-26 | 2019-07-23 | Industrial Technology Research Institute | Bionic fixing apparatus |
| CN113229917A (en) * | 2021-05-24 | 2021-08-10 | 北京市春立正达医疗器械股份有限公司 | Intramedullary nail guide pin |
-
2006
- 2006-03-09 CN CNU2006201015344U patent/CN2894638Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104665913A (en) * | 2013-11-26 | 2015-06-03 | 财团法人工业技术研究院 | Bionic fixing device and pulling-out device thereof |
| US9770276B2 (en) | 2013-11-26 | 2017-09-26 | Industrial Technology Research Institute | Bionic fixing apparatus |
| US10357297B2 (en) | 2013-11-26 | 2019-07-23 | Industrial Technology Research Institute | Bionic fixing apparatus |
| US10507041B2 (en) | 2013-11-26 | 2019-12-17 | Industrial Technology Research Institute | Bionic fixing apparatus and apparatus for pulling out the same |
| US10064737B2 (en) | 2015-12-07 | 2018-09-04 | Industrial Technology Research Institute | Implant device for osseous integration |
| CN113229917A (en) * | 2021-05-24 | 2021-08-10 | 北京市春立正达医疗器械股份有限公司 | Intramedullary nail guide pin |
| CN113229917B (en) * | 2021-05-24 | 2022-09-20 | 北京市春立正达医疗器械股份有限公司 | Intramedullary nail guide pin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |