CN102379738A - Spinal screw nailing device - Google Patents
Spinal screw nailing device Download PDFInfo
- Publication number
- CN102379738A CN102379738A CN2011102776390A CN201110277639A CN102379738A CN 102379738 A CN102379738 A CN 102379738A CN 2011102776390 A CN2011102776390 A CN 2011102776390A CN 201110277639 A CN201110277639 A CN 201110277639A CN 102379738 A CN102379738 A CN 102379738A
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- rod
- con
- sleeve
- slide block
- turncap
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Abstract
The invention discloses a spinal screw nailing device, comprising a fixing nail connection rod, wherein the fixing nail connection rod comprises a connection rod main body. One end of the fixing nail connection rod is fixedly provided with a nailing head, and the other end of the connection rod main body is fixedly connected with a connection rod handle. A sleeve is movably sleeved on the connection rod main body, and a clamp ring is arranged on the sleeve. One end of the sleeve closed to the connection rod handle is fixedly provided with a turn cap, a handle is movably sleeved on the sleeve, the end part of the sleeve closed to the nailing head is provided with threads, and the connection rod main body on the outer end part of the turn cap is provided with a locking mechanism which is used for interlocking the turn cap with the connection rod main body. The invention has the following advantages: after the connection rod main body is provided with the locking mechanism, the connection rod main body can drive the sleeve to rotate while rotates, so the sleeve cannot be loosened from the pedicle screw, and the safety coefficient of operations is greatly improved. The invention can be widely used for fixing the pedicle screws in nail-bar systems.
Description
Technical field
The present invention relates to the internal fixation of spine apparatus field that operative treatment is used, be specifically related to be used for fixing on the spinal screw of spinal stabilization system and follow closely device.
Background technology
The spinal vertebral pathological changes is puzzlement people's commonly encountered diseases and a frequently-occurring disease, and the main method of treating this kind disease is that the spinal column lesion resection is carried out in operation, carries out column reconstruction then.Usually need on spinal column, use spinal stabilization system to carry out the vertebral body internal fixation in this operation, spinal stabilization system be commonly called as nail-stick system.Described nail-stick system structure comprises: the two ends of spinal rod are separately installed with pedicle nail.On spinal column, during the staple bar system, needing to use specific purpose tool---the nail device fixes pedicle nail on the spinal screw.Follow closely device on the present employed spinal screw, its structure comprises: the staple connecting rod, and the staple connecting rod comprises con-rod only; One end of con-rod only is set with ailhead; The other end of con-rod only is set with link rod handle, is movably installed with sleeve on the con-rod only, and sleeve is provided with collar; Sleeve is set with turncap near an end of link rod handle; Turncap also movable set is movably installed with handle on the sleeve between collar and the turncap on con-rod only, sleeve is provided with screw thread near the end of a side of last ailhead.During use; Last ailhead is put into " U " shape groove of pedicle nail, and one holds handle, turns turncap on the other hand; Owing to be provided with the screw thread that is used with sleeve ends in the U-lag of pedicle nail; Rotate turncap like this sleeve and pedicle nail are fixedly finished, and then the pivot link handle, make ailhead drive the pedicle nail co-rotation and be fixed on vertebral body and go up corresponding position.Follow closely device on the spinal screw of said structure; Because in use, the hands of holding handle tends to apply a thrust to sleeve unawares, makes sleeve and handle tightly fit together and stops relatively not changeing along with handle; In the pivot link handle, can produce the counter-rotating of sleeve and pedicle nail like this; Thereby make to be threaded looseningly on pedicle nail and the sleeve, cause ailhead to be difficult to carry out the work of stable fixedly pedicle nail, increased the danger coefficient of operation.
Summary of the invention
A kind of when last nail, can not the causing that provide of the problem that the present invention need solve followed closely device on pedicle nail and the telescopic loosening spinal screw that is threaded.
For addressing the above problem, the present invention realizes through following technical scheme.
Follow closely device on the spinal screw, comprise the staple connecting rod, the staple connecting rod comprises con-rod only; One end of con-rod only is set with ailhead, and the other end of con-rod only is set with link rod handle, is movably installed with sleeve on the con-rod only; Sleeve is provided with collar, and sleeve is set with turncap near an end of link rod handle, turncap also movable set on con-rod only; On the sleeve between collar and the turncap, be movably installed with handle, sleeve is provided with screw thread near the end of a side of last ailhead, and the con-rod only of turncap outer end is provided with locking mechanism; The structure of described locking mechanism is: slide block, slide block are provided with the slide block through hole vertically, and a side of slide block offers lock slots; Described lock slots communicates with the slide block through hole, is disposed with spring and lock dog in the lock slots from the inside to the outside, offers the lock dog through hole on the described lock dog; Slide block and lock dog are sleeved on the con-rod only of turncap outer end through through hole separately, described lock dog ability lock link body; Described turncap outer face is provided with latch, also is provided with latch on the described slide block inner side end, and turncap and slide block are meshing with each other fixing through latch separately.
Further; Follow closely device on the aforesaid spinal screw; Wherein, the concrete structure of described lock dog and con-rod only locking is: the lock dog through hole to be shaped as near spring one side be square opening, the outside end of square opening is an arc-shaped hole; Offer groove on one section con-rod only of described installation slide block; The outer surface of the turncap relative with groove and the opposite side of the con-rod only between the link rod handle is a flat segments, and the height of described square opening is greater than the height of groove segments con-rod only and less than the height of the con-rod only beyond the groove, the diameter of described arc-shaped hole is greater than the height of the con-rod only beyond the groove; And after turncap and the slide block engages fixed, lock dog is stuck in the groove.
Advantage of the present invention is: after being provided with locking mechanism on the con-rod only; When link rod handle rotates; Locking mechanism is locking bushing and con-rod only simultaneously; Drive sleeve simultaneously when con-rod only rotates like this and rotate together, effectively avoided because of the relative counter-rotating of sleeve back, caused sleeve and the loosening situation generation of pedicle nail, improved the safety coefficient of performing the operation greatly with the pedicle nail generation.
Description of drawings
Fig. 1 is a nail device structural representation on the spinal screw of the present invention.
Fig. 2 is an A-A schematic cross-section among Fig. 1.
Fig. 3 is the perspective view of the slide block described in the present invention.
Fig. 4 is a staple connecting rod profile sketch map of the present invention.
Fig. 5 is a C-C schematic cross-section among Fig. 4.
Fig. 6 is a B-B schematic cross-section among Fig. 4.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
As shown in Figure 1, follow closely device on the spinal screw, comprise the staple connecting rod; The staple connecting rod comprises con-rod only 1, and an end of con-rod only 1 is set with ailhead 2, and the other end of con-rod only 1 is set with link rod handle 9; Be movably installed with sleeve 3 on the con-rod only 1, sleeve 3 is provided with collar 31, and sleeve 3 is set with turncap 4 near an end of link rod handle 2; Turncap 4 also movable set is movably installed with handle 5 on the sleeve 3 between collar 31 and the turncap 4 on con-rod only 1, sleeve 3 is provided with screw thread 32 near the end of a side of last ailhead 2; The con-rod only 1 of turncap 4 outer ends is provided with locking mechanism, and like Fig. 2, shown in Figure 3, the structure of described locking mechanism is: slide block 6; Slide block 6 is provided with slide block through hole 61 vertically, and a side of slide block 6 offers lock slots 62, and described lock slots 62 communicates with slide block through hole 61; Be disposed with spring 7 and lock dog 8 in the lock slots 62 from the inside to the outside; Offer lock dog through hole 81 on the described lock dog 8, slide block 6 and lock dog 8 through hole through separately respectively are sleeved on the con-rod only 1 of turncap 4 outer ends, and described lock dog 8 can lock link bodies 1; Described turncap 4 outer faces are provided with latch, also are provided with latch 63 on described slide block 6 inner side ends, and turncap 4 and slide block 6 are meshing with each other fixing through latch separately.Described lock dog 8 with the concrete structure of con-rod only 1 locking is: as shown in Figure 2; Lock dog through hole 81 to be shaped as near spring one side be square opening; The outside end of square opening is an arc-shaped hole; Like Fig. 4, Fig. 5, shown in Figure 6; Offer groove 11 on one section con-rod only 1 of described installation slide block 6; The outer surface of the turncap 4 relative with groove 11 and the opposite side of the con-rod only 1 between the link rod handle 2 is a flat segments, and the height of the square opening on the described lock dog through hole 81 is greater than the height of 11 sections con-rod onlys 1 of groove and less than the height of the con-rod only 1 beyond the groove 11, the diameter of the arc-shaped hole on the described lock dog through hole 81 is greater than the height of the con-rod only 1 beyond the groove 11; And after turncap 4 and slide block 6 engages fixed, tightly being stuck in the groove 11 of lock dog 8, lock dog 8 just can pass through square opening with con-rod only 1 and groove 11 lock each other like this.In the practical application, lock dog 8 can also lock through other similar structure with con-rod only 1 each other, and these technique variation all should belong to protection scope of the present invention.
During last nail, last ailhead 2 is put into " U " shape groove of pedicle nail, inwardly push lock dog 8 then, con-rod only 1 is got in the arc-shaped hole, outside moving slider 6 is separated from slide block 6 and turncap 4 again.One hold handle 5 then; On the other hand rotate turncap 4, the screw thread 32 of sleeve 3 one ends and the screw thread in pedicle nail " U " the shape groove are fixed, then slide block 6 is shifted to turncap 4 latch and the latch 63 on the slide block 6 on the turncap 4 are meshing with each other; Fall into groove 11 until lock dog 8; Lock dog 8 outwards ejected until con-rod only 1 and got in the square opening under the effect of spring 7 this moment, and lock dog 8 has just fixed with each other with the staple connecting rod like this; Whole staple connecting rod and sleeve 3, turncap 4,6 one-tenth of slide blocks are as a whole; And then pivot link handle 9, staple connecting rod band sleeve 3, turncap 4, slide block 6 co-rotation, and last ailhead 2 is being with the pedicle nail rotation until being screwed into the matched position of vertebral body.In this process, 3 in sleeve can not produce relative counter-rotating, has avoided causing following closely on the spinal screw device and being connected loosening situation generation with pedicle nail because of after the relative counter-rotating with the pedicle nail generation of sleeve 3, has improved the safety coefficient of performing the operation greatly.After last nail finishes, lock dog 8 is pressed, also outwards moved, the latch 63 on latch on the turncap 4 and the slide block 6 is separated from each other; Slide block 6 moves to the direction of link rod handle 9; The backward rotation turncap 4 again, and sleeve 3 and pedicle nail are thrown off, and promptly follow closely device on the retrieval spinal screw.
Advantage of the present invention is: after being provided with locking mechanism on the con-rod only; When link rod handle rotates; Locking mechanism is locking bushing and con-rod only simultaneously; Drive sleeve simultaneously when con-rod only rotates like this and rotate together, effectively avoided because of the relative counter-rotating of sleeve back, caused sleeve and the loosening situation generation of pedicle nail, improved the safety coefficient of performing the operation greatly with the pedicle nail generation.
Claims (2)
1. follow closely device on the spinal screw, comprise the staple connecting rod, the staple connecting rod comprises con-rod only; One end of con-rod only is set with ailhead, and the other end of con-rod only is set with link rod handle, is movably installed with sleeve on the con-rod only; Sleeve is provided with collar, and sleeve is set with turncap near an end of link rod handle, turncap also movable set on con-rod only; On the sleeve between collar and the turncap, be movably installed with handle, sleeve is provided with screw thread near the end of last ailhead one side, it is characterized in that: the con-rod only of turncap outer end is provided with locking mechanism; The structure of described locking mechanism is: slide block; Slide block is provided with the slide block through hole vertically, and a side of slide block offers lock slots, and described lock slots communicates with the slide block through hole; Be disposed with spring and lock dog in the lock slots from the inside to the outside; Offer the lock dog through hole on the described lock dog, slide block and lock dog are sleeved on the con-rod only of turncap outer end through through hole separately, described lock dog ability lock link body; Described turncap outer face is provided with latch, also is provided with latch on the described slide block inner side end, and turncap and slide block are meshing with each other fixing through latch separately.
2. follow closely device on the spinal screw according to claim 1; It is characterized in that: the concrete structure of described lock dog and con-rod only locking is: the lock dog through hole to be shaped as near spring one side be square opening; The outside end of square opening is an arc-shaped hole; Offer groove on one section con-rod only of described installation slide block; The outer surface of the turncap relative with groove and the opposite side of the con-rod only between the link rod handle is a flat segments, and the height of described square opening is greater than the height of groove segments con-rod only and less than the height of the con-rod only beyond the groove, the diameter of described arc-shaped hole is greater than the height of the con-rod only beyond the groove; And after turncap and the slide block engages fixed, lock dog is stuck in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110277639 CN102379738B (en) | 2011-09-19 | 2011-09-19 | Spinal screw nailing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110277639 CN102379738B (en) | 2011-09-19 | 2011-09-19 | Spinal screw nailing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102379738A true CN102379738A (en) | 2012-03-21 |
| CN102379738B CN102379738B (en) | 2013-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110277639 Active CN102379738B (en) | 2011-09-19 | 2011-09-19 | Spinal screw nailing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102379738B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103271763A (en) * | 2013-05-22 | 2013-09-04 | 苏州爱得科技发展有限公司 | Combined replacing type Stryker nail installing device |
| CN109199566A (en) * | 2017-07-05 | 2019-01-15 | 北京纳通医学科技研究院有限公司 | Pedicle of vertebral arch screw nails on nail device |
| CN109745115A (en) * | 2019-02-21 | 2019-05-14 | 江苏双羊医疗器械有限公司 | A kind of minimally invasive upper nail device of orthopaedics |
| CN113017816A (en) * | 2021-02-26 | 2021-06-25 | 北京市春立正达医疗器械股份有限公司 | Novel knee joint nail puller |
| CN113288395A (en) * | 2021-05-21 | 2021-08-24 | 山东威高骨科材料股份有限公司 | Multifunctional screw feeding screwdriver for pedicle screw |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626448Y (en) * | 2003-07-18 | 2004-07-21 | 王平 | Broken bolt extractor for orthopaedics |
| CN101416904A (en) * | 2008-11-13 | 2009-04-29 | 苏州市兴达医械制造有限公司 | Centrum-nail fastening device |
| CN202223334U (en) * | 2011-09-19 | 2012-05-23 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw feeder |
-
2011
- 2011-09-19 CN CN 201110277639 patent/CN102379738B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2626448Y (en) * | 2003-07-18 | 2004-07-21 | 王平 | Broken bolt extractor for orthopaedics |
| CN101416904A (en) * | 2008-11-13 | 2009-04-29 | 苏州市兴达医械制造有限公司 | Centrum-nail fastening device |
| CN202223334U (en) * | 2011-09-19 | 2012-05-23 | 苏州欣荣博尔特医疗器械有限公司 | Spinal screw feeder |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103271763A (en) * | 2013-05-22 | 2013-09-04 | 苏州爱得科技发展有限公司 | Combined replacing type Stryker nail installing device |
| CN103271763B (en) * | 2013-05-22 | 2014-12-24 | 苏州爱得科技发展有限公司 | Combined replacing type Stryker nail installing device |
| CN109199566A (en) * | 2017-07-05 | 2019-01-15 | 北京纳通医学科技研究院有限公司 | Pedicle of vertebral arch screw nails on nail device |
| CN109199566B (en) * | 2017-07-05 | 2023-12-01 | 北京纳通医学科技研究院有限公司 | Pedicle screw feeding device |
| CN109745115A (en) * | 2019-02-21 | 2019-05-14 | 江苏双羊医疗器械有限公司 | A kind of minimally invasive upper nail device of orthopaedics |
| CN113017816A (en) * | 2021-02-26 | 2021-06-25 | 北京市春立正达医疗器械股份有限公司 | Novel knee joint nail puller |
| CN113288395A (en) * | 2021-05-21 | 2021-08-24 | 山东威高骨科材料股份有限公司 | Multifunctional screw feeding screwdriver for pedicle screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102379738B (en) | 2013-01-02 |
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