CN201624770U - Anti-exposed expansion rod of interlocking intramedullary nail extractor - Google Patents
Anti-exposed expansion rod of interlocking intramedullary nail extractor Download PDFInfo
- Publication number
- CN201624770U CN201624770U CN2010201333536U CN201020133353U CN201624770U CN 201624770 U CN201624770 U CN 201624770U CN 2010201333536 U CN2010201333536 U CN 2010201333536U CN 201020133353 U CN201020133353 U CN 201020133353U CN 201624770 U CN201624770 U CN 201624770U
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- CN
- China
- Prior art keywords
- screw
- intramedullary nail
- screw rod
- expansion rod
- interlocking intramedullary
- 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 a medical instrument, in particular to an anti-exposed expansion rod of an interlocking intramedullary nail extractor, which consists of the expansion rod, a screw, deformable grooves and an annular bevel. The screw is tubular, the expansion rod disposed in the screw combined with the inner wall of the screw via thread, three deformable grooves uniformly distributed along circumferences of the screw are arranged on outer wall of the lower end of the screw, the outer wall of the lower end of the screw is provided with threads, a circle of annular bevel integrated with the screw is arranged on the inner wall of the lower end of the screw, and the interior of the lower end of the screw is encircled into an inverted truncated cone shaped space by the annular bevel. By aid of the anti-exposed expansion rod, turns of threaded combination between the screw and an interlocking intramedullary nail can be increased, and screwing force between the screw and the interlocking intramedullary nail is strengthened, thereby guaranteeing smooth extraction of the interlocking intramedullary nail.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly relates to a kind of interlocking intramedullary nail extractor and exempts from exposed expansion rod.
Background technology
The patent No. is that 200910100084.5 " one kind of multiple interlocking intramedullary nail extractors " discloses a kind of extractor that can take out the different model interlocking intramedullary nail.Its architectural feature is: there is screw thread in the screw front end outside, screw front end forms groove, the expansion rod cover is inserted in the screw rod, the front end of expansion rod forms the head of taper, during use, the rotation inflation handle, the conical nose of expansion rod struts the external screw thread elasticity of screw front end, just can with the screw thread bolt in the interlocking intramedullary nail of different model.
The defective of this bell structure is: the conical nose of expansion rod is exposed at beyond the screw front end during use, because the screw degree of depth of interlocking intramedullary nail nail tail is limited, and the effective depth of screw rod insertion interlocking intramedullary nail nail tail screw has just been shortened in the existence of conical head, promptly reduced the bonded number of turns of screw thread of screw rod and interlocking intramedullary nail, so just greatly reduce the spiral shell knot power between the two, the female thread of interlocking intramedullary nail is had because of the ruined danger of stripped thread, in case screw thread is destroyed, be difficult to again with its taking-up.
The utility model content
This utility model is for solving the deficiencies in the prior art, provides a kind of and need not the interlocking intramedullary nail extractor that expansion rod exposes and exempt from exposed expansion rod.
The scheme that solves this utility model technical problem is: interlocking intramedullary nail extractor is exempted from exposed expansion rod and is made of expansion rod, screw rod, distortion groove and annular slope.Screw rod is a tubulose, and expansion rod is in the screw rod and with the inwall of screw rod and combines by screw thread.The outer wall of the lower end of screw rod has three along the equally distributed distortion groove of screw rod circumference, the outer wall of screw rod lower end has screw thread, it is the annular slope of one with screw rod that the inwall of screw rod lower end has a circle, and described annular slope surrounds the inside of screw rod lower end in the space of a reverse frustoconic.When the rotation expansion rod made expansion rod to the following end motion of screw rod, the annular slope of the extruding screw lower end, lower end of expansion rod strutted the elastane thread on the outer wall of screw rod lower end, just can with the screw thread bolt in the interlocking intramedullary nail of different model.
Adopt such scheme, can reach following effect:
Because this utility model has adopted inwall to have the screw rod of annular slope, therefore expansion rod can be hidden in screw rod inside, in strutting the process of screw thread, the end of expansion rod need not to expose, expose the effective depth that shortens screw rod insertion interlocking intramedullary nail nail tail screw with regard to having avoided because of the expansion rod end like this, increase the bonded number of turns of screw thread of screw rod and interlocking intramedullary nail, so just strengthened the spiral shell knot power between the two greatly, guaranteed the smooth taking-up of interlocking intramedullary nail.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a profile of the present utility model;
Fig. 3 is the upward view of Fig. 1.
Among the figure: 1. expansion rod 2. screw rods 3. are out of shape grooves 4. annular slopes
The specific embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Interlocking intramedullary nail extractor is exempted from exposed expansion rod and is made of expansion rod 1, screw rod 2, distortion groove 3 and annular slope 4.Screw rod 2 is a tubulose, and expansion rod 1 is in the screw rod 2 and with the inwall of screw rod 2 and combines by screw thread.The outer wall of the lower end of screw rod 2 has three along the equally distributed distortion groove 3 of screw rod 2 circumference, the outer wall of screw rod 2 lower ends has screw thread, the inwall of screw rod 2 lower ends has a circle to be the annular slope 4 of one with screw rod 2, and described annular slope surrounds the inside of screw rod 2 lower ends in the space of a reverse frustoconic.
When rotation expansion rod 1 made expansion rod 1 to the following end motion of screw rod 2, the annular slope of lower end extruding screw 2 lower ends of expansion rod 1 strutted the elastane thread on the outer wall of screw rod 2 lower ends, just can with the screw thread bolt in the interlocking intramedullary nail of different model.
Claims (1)
1. an interlocking intramedullary nail extractor is exempted from exposed expansion rod, constitute by expansion rod, screw rod, distortion groove and annular slope, it is characterized in that: screw rod is a tubulose, expansion rod is in the screw rod and with the inwall of screw rod and combines by screw thread, the outer wall of the lower end of screw rod has three along the equally distributed distortion groove of screw rod circumference, the outer wall of screw rod lower end has screw thread, it is the annular slope of one with screw rod that the inwall of screw rod lower end has a circle, and described annular slope surrounds the inside of screw rod lower end in the space of a reverse frustoconic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201333536U CN201624770U (en) | 2010-02-11 | 2010-02-11 | Anti-exposed expansion rod of interlocking intramedullary nail extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201333536U CN201624770U (en) | 2010-02-11 | 2010-02-11 | Anti-exposed expansion rod of interlocking intramedullary nail extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201624770U true CN201624770U (en) | 2010-11-10 |
Family
ID=43056149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201333536U Expired - Fee Related CN201624770U (en) | 2010-02-11 | 2010-02-11 | Anti-exposed expansion rod of interlocking intramedullary nail extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201624770U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101843520A (en) * | 2010-02-11 | 2010-09-29 | 成都峻峰科技开发有限公司 | Efficiency-enhanced cross-locking intramedullary nail threaded rod |
| CN102813548A (en) * | 2012-08-21 | 2012-12-12 | 杨铁毅 | Intramedullary nail extractor |
| CN103458814A (en) * | 2011-03-28 | 2013-12-18 | 新特斯有限责任公司 | Interlock driving instrument |
| CN114027960A (en) * | 2022-01-07 | 2022-02-11 | 江苏百易得医疗科技有限公司 | Orthopedic implant device |
-
2010
- 2010-02-11 CN CN2010201333536U patent/CN201624770U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101843520A (en) * | 2010-02-11 | 2010-09-29 | 成都峻峰科技开发有限公司 | Efficiency-enhanced cross-locking intramedullary nail threaded rod |
| CN103458814A (en) * | 2011-03-28 | 2013-12-18 | 新特斯有限责任公司 | Interlock driving instrument |
| CN103458814B (en) * | 2011-03-28 | 2016-09-28 | 新特斯有限责任公司 | Interlocked drive tool |
| CN102813548A (en) * | 2012-08-21 | 2012-12-12 | 杨铁毅 | Intramedullary nail extractor |
| CN102813548B (en) * | 2012-08-21 | 2015-04-29 | 杨铁毅 | Intramedullary nail extractor |
| CN114027960A (en) * | 2022-01-07 | 2022-02-11 | 江苏百易得医疗科技有限公司 | Orthopedic implant device |
| CN114027960B (en) * | 2022-01-07 | 2022-04-05 | 江苏百易得医疗科技有限公司 | Orthopedic implant device |
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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: 20101110 Termination date: 20110211 |