CN101416904A - Centrum-nail fastening device - Google Patents
Centrum-nail fastening device Download PDFInfo
- Publication number
- CN101416904A CN101416904A CNA2008102352512A CN200810235251A CN101416904A CN 101416904 A CN101416904 A CN 101416904A CN A2008102352512 A CNA2008102352512 A CN A2008102352512A CN 200810235251 A CN200810235251 A CN 200810235251A CN 101416904 A CN101416904 A CN 101416904A
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- China
- Prior art keywords
- movable sleeve
- connecting rod
- centrum
- fastening device
- fixed cover
- 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.)
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Abstract
The invention discloses a vertebral screw fixer of a vertebral screw which is suitable for being connected with long or short screw threads. The vertebral screw fixer comprises a handle on which a connecting rod with a T-shaped boss at one end is arranged; a movable sleeve is sheathed on the connecting rod and one end of the movable sleeve is provided with screw threads while the other end is at least provided with a bump; a fixed sleeve is also sheathed on the connecting rod and one end of the fixed sleeve is provided with a J-shaped chute; one end of the movable sleeve stretches into the fixed sleeve and the bump can slide in the chute; and a spring is arranged between the fixed sleeve and the movable sleeve. The vertebral screw fixer can be applied to such occasions where vertebral screws with long or short screw threads are often shifted.
Description
Technical field
The present invention relates to medical instruments field, refer more particularly to a kind of centrum-nail fastening device.
Background technology
The centrum-nail fastening device that present most of hospital all adopts directly is welded by handle and connecting rod, is provided with long screw thread or the short thread that matches with the vertebral body nail at the end of connecting rod.In the time will connecting the vertebral body nail that has long screw thread, must select the centrum-nail fastening device that is provided with long screw thread for use, otherwise, in the time of connecting the vertebral body nail that has short thread, must select the centrum-nail fastening device that is provided with short thread for use.But this centrum-nail fastening device has increased workload to the doctor, and has prolonged operating time.
Summary of the invention
The technical problem to be solved in the present invention is: the centrum-nail fastening device that the vertebral body that will provide a kind of suitable connection to have long and short screw thread is followed closely.
For achieving the above object, the technical solution used in the present invention is: described centrum-nail fastening device, comprise: handle, handle is provided with the connecting rod of an end band T shape boss, on connecting rod, be set with movable sleeve, one end of movable sleeve is provided with screw thread, the other end is provided with a projection at least, on connecting rod, be set with fixed cover, fixed cover is provided with the chute of J-shaped, one end of movable sleeve stretches in the fixed cover, and described projection can slide in chute, is provided with spring between fixed cover and movable sleeve.
End at described movable sleeve is set with sliding sleeve;
Between described fixed cover and connecting rod, be provided with two semicircular banking stops.
Advantage of the present invention is: by adopting the cooperation of movable sleeve and connecting rod, can connect the vertebral body nail of long screw thread and short thread, and quick for installation, shortened operating time greatly.
Description of drawings
Fig. 1 is the internal structure sketch map of centrum-nail fastening device of the present invention;
Fig. 2 is the left apparent direction structural representation of Fig. 1;
Fig. 3 is a kind of working state figure of the present invention;
Fig. 4 is the structure chart of fixed cover among the present invention.
Among the figure: 1, handle, 2, connecting rod, 21, boss, 3, banking stop, 4, fixed cover, 5, spring, 6, sliding sleeve, 7, projection, 8, movable sleeve, 81, screw thread, 9, chute, 91, long slideway, 92, the screens chute.
The specific embodiment
Below in conjunction with the drawings and specific embodiments technical solutions according to the invention, operation principle and advantage are further described.
In the present embodiment, as shown in Figure 1, comprise: handle 1, handle 1 is provided with the connecting rod 2 of an end band T shape boss 21, on connecting rod 2, be set with movable sleeve 8, one end of movable sleeve 8 is provided with screw thread 81, the other end is provided with a projection 7 at least, be set with fixed cover 4 on connecting rod 2, be provided with the chute 9 of J-shaped at an end of fixed cover 4, an end of movable sleeve 8 stretches in the fixed cover 4, projection 7 can slide in chute 9, be provided with spring 5 between fixed cover 4 and movable sleeve 8, be provided with two semicircular banking stops 3 between fixed cover 4 and connecting rod 2, the effect of banking stop 3 is to make things convenient for the installation of whole part and cleaning.Be set with sliding sleeve 6 on movable sleeve 8, the effect of sliding sleeve 6 is the strong points that increase movable sleeve 8, makes movable sleeve 8 be not easy to rock.
Operation principle of the present invention is: when centrum-nail fastening device is in position shown in Figure 2, can connect the vertebral body nail that has long screw thread, promptly work as projection 7 and be in the screens chute 92, only need getting final product in the screw thread of the 81 screw-in vertebral bodys nails of the screw thread on the movable sleeve 8 of the present invention.When centrum-nail fastening device will connect the vertebral body nail that has short thread, earlier movable sleeve 8 after the promotion of handle 1 direction, make projection 7 slide to the long slideway 91 of chute 9 along screens chute 92, unclamp movable sleeve 8 then, movable sleeve 8 slides to the T of connecting rod 2 shape boss 21 under the effect of spring 5, stops to slide----as shown in Figure 3 touch the T shape boss of connecting rod 2 when the end of thread of movable sleeve 8 after.At this moment can screw in the vertebral body nail that has short thread to the screw thread on the movable sleeve 8 81.
Advantage of the present invention is: by adopting the cooperation of movable sleeve 8 and connecting rod 2, can connect easily The centrum nail of long screw thread and short thread, quick for installation, greatly shortened operating time.
Claims (3)
1, centrum-nail fastening device, comprise: handle, it is characterized in that: handle is provided with the connecting rod of an end band T shape boss, is set with movable sleeve on connecting rod, and an end of movable sleeve is provided with screw thread, the other end is provided with a projection at least, be set with fixed cover on connecting rod, fixed cover is provided with the chute of J-shaped, and an end of movable sleeve stretches into fixed cover, described projection can slide in chute, is provided with spring between fixed cover and movable sleeve.
2, according to the described centrum-nail fastening device of claim 1, it is characterized in that: the end at described movable sleeve is set with sliding sleeve.
3, according to the described centrum-nail fastening device of claim 1, it is characterized in that: between described fixed cover and connecting rod, be provided with two semicircular banking stops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102352512A CN101416904B (en) | 2008-11-13 | 2008-11-13 | Centrum-nail fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102352512A CN101416904B (en) | 2008-11-13 | 2008-11-13 | Centrum-nail fastening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101416904A true CN101416904A (en) | 2009-04-29 |
| CN101416904B CN101416904B (en) | 2012-11-14 |
Family
ID=40628030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102352512A Active CN101416904B (en) | 2008-11-13 | 2008-11-13 | Centrum-nail fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101416904B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102379738A (en) * | 2011-09-19 | 2012-03-21 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
-
2008
- 2008-11-13 CN CN2008102352512A patent/CN101416904B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102379738A (en) * | 2011-09-19 | 2012-03-21 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
| CN102379738B (en) * | 2011-09-19 | 2013-01-02 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw nailing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101416904B (en) | 2012-11-14 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Yang Jin Road No. 607 Fengzhen Jiangsu Hepu medical Polytron Technologies Inc Patentee after: JIANGSU HOPROMED TECHNOLOGY CO.,LTD. Address before: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Yang Jin Road No. 607 Fengzhen Jiangsu Hepu medical instrument limited company Patentee before: JIANGSU HOPE MEDICAL INSTRUMENT Co.,Ltd. Address after: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Yang Jin Road No. 607 Fengzhen Jiangsu Hepu medical instrument limited company Patentee after: JIANGSU HOPE MEDICAL INSTRUMENT Co.,Ltd. Address before: 215625 Jiangsu city of Zhangjiagang province Fengzhen Jin Yang Jin Lu Patentee before: SUZHOU XINGDA MEDICAL APPARATUS MANUFACTURE Co.,Ltd. |