CN206080672U - Cervical vertebra posterior approach operation set screw that singly opens door - Google Patents
Cervical vertebra posterior approach operation set screw that singly opens door Download PDFInfo
- Publication number
- CN206080672U CN206080672U CN201620729608.2U CN201620729608U CN206080672U CN 206080672 U CN206080672 U CN 206080672U CN 201620729608 U CN201620729608 U CN 201620729608U CN 206080672 U CN206080672 U CN 206080672U
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- China
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- screw
- head
- utility
- model
- posterior approach
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Abstract
The utility model discloses a cervical vertebra posterior approach operation set screw that singly opens door, include the screw rod and be connected screwhead as an organic whole with the screw rod, the anterior segment of screw rod be provided with two tooth tapping screw thread, its back end is the polished rod, is provided with one or more anticreep device on the polished rod. The utility model discloses pole portion at the screw is provided with the anticreep device, and consequently, after the vertebral plate was twisted to the screw, spring leaf on the anticreep device opened naturally and forms " barb " to effectively prevent screw slippage from the vertebral plate, improve surgery effect's continuity, avoid the disease recurring. And simultaneously, the utility model provides an it be universal connection with the screwhead to turn to the cover, and patient is in that turn or during tensile action, it can correspondingly affect to turn to the silk thread of sheatheeing in, avoids articular capsule to receive and lasts tractive and harassing and wrecking, arouses the painful discomfort of postoperative neck.
Description
Technical field
The utility model is related to a kind of cervical posterior approach single open-door fixing screws, belongs to technical field of medical instruments.
Background technology
Stenosis are a class common diseases, are carried out frequently with Canal expansive laminoplasty decompression operation for this kind of illness
Treatment.The purpose of laminoplasty is exactly to expand the upset of canalis spinalis rear wall, increases the volume of canalis spinalis, provides more for spinal cord
Cushion space.
Single open-door operation is that, used as rotary shaft, other side is fully opened using vertebral plate side, and to door-hinge side to overturn, referred to as
Single open-door.In order to keep enabling Rear Door (vertebral plate) not turn off, need to carry out interior fixation.Traditional fixation side of single open-door operation
Method, is punched using spinous process, and cordonnet Jing spinous process perforation, the method for being sewn to door-hinge side Minor articulus capsule is fixed.This method
Use more than ten year till today, case follow-up finds, due to being fixed using existing plain screw, it is present fixes loosely
Lean on, screw is easily slipped, the shortcoming for causing postoperative rate of closing the door higher.Further, since silk suture is on capsular ligament, capsular ligament is
Soft tissue, in swivel or pulling action, silk thread can not be affected correspondingly patient, cause capsular ligament by persistently drawing and
Harassing and wrecking, cause postoperative cervical pain uncomfortable.
The content of the invention
The purpose of this utility model is, there is provided a kind of simple structure, it is easy to use, fixed, with anti-drop function
Cervical posterior approach single open-door fixing screws, to overcome deficiency of the prior art.
The technical solution of the utility model：A kind of cervical posterior approach single open-door fixing screws, including screw rod and and spiral shell
The head of screw that bar is connected as one, the leading portion of described screw rod is provided with double tooth tapping screw threads, and its back segment is polished rod, on polished rod
It is provided with one or more anti-drop device.
The anti-drop device includes being provided with the groove on polished rod, and one end of spring leaf is welded on the bottom of groove lower end
Portion, the other end stretches out from groove mouth upper end.
The head of screw is spherical structure, and turning sleeve, the turning sleeve and the universal connection of head of screw are cased with head of screw,
Interior six square groove is provided with the top of head of screw, the both sides of turning sleeve are provided with through hole, one end of silk thread is tied through after through hole
Tie up on turning sleeve.
Due to adopting above-mentioned technical proposal, the utility model has the advantage of：The utility model is arranged in the bar portion of screw
There is anti-drop device, therefore, after screw is screwed into vertebral plate, the spring leaf on anti-drop device opens and is formed " hangnail " naturally, so as to
Effectively prevent screw from slipping from vertebral plate, improve the continuity of surgical effect, it is to avoid illness recurs.Meanwhile, in the utility model
Turning sleeve and head of screw be universal connection, in swivel or pulling action, the silk thread on turning sleeve can correspondingly enter patient
Row is affected, it is to avoid capsular ligament is persistently pulled and harassed, and causes postoperative cervical pain uncomfortable.Therefore, the utility model is not only
Simple structure, easy to use and fixed, the postoperative incidence of closing the door of reduction, improve surgical effect.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals：1- screw rods, 2- head of screws, 3- polished rods, the double tooth tapping screw threads of 4-, 5- turning sleeves, 6- through holes, 7-
Groove, 8- spring leafs, 9- silk threads, six square groove in 10-.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, it is right with reference to the accompanying drawings and examples
The utility model is described in further detail.
Embodiment of the present utility model：The structural representation of cervical posterior approach single open-door fixing screws is as shown in figure 1, bag
The head of screw 2 for including screw rod 1 and connecting as one with screw rod 1, the leading portion of described screw rod 1 is provided with double tooth tapping screw threads 4, double
It is fast that tooth tapping screw thread 4 not only screws in speed, improves procedure efficiency, but also has the advantages that fixed, is particularly suited for vertebra
Plate is fixed；The back segment of screw rod 1 is polished rod 3, and two anti-drop devices are provided with polished rod 3；The anti-drop device includes being provided with
Groove 7 on polished rod 3, one end of spring leaf 8 is welded on the bottom of the lower end of groove 7, and the other end stretches out from the oral area upper end of groove 7.
The head of screw 2 is spherical structure, and turning sleeve 5, the turning sleeve 5 and the universal connection of head of screw 2 are cased with head of screw 2,
The top of head of screw 2 is provided with interior six square groove 10, and the both sides of turning sleeve 5 are provided with through hole 6, and one end of silk thread 9 passes through through hole 6
After be bundled on turning sleeve 5.
The utility model is provided with anti-drop device on the polished rod 3 of screw, therefore, after screw is screwed into vertebral plate, anticreep dress
The spring leaf 8 put opens and is formed " hangnail " naturally, so as to effectively prevent screw from slipping from vertebral plate, improves surgical effect
Continuity, it is to avoid illness recurs.Meanwhile, the turning sleeve 5 in the utility model is universal connection with head of screw 2, and patient is in swivel
Or during pulling action, the silk thread 9 on turning sleeve 5 can be affected correspondingly, it is to avoid capsular ligament is persistently pulled and harassed,
Cause postoperative cervical pain uncomfortable.
Claims (3)
1. a kind of cervical posterior approach single open-door fixing screws, including screw rod（1）And and screw rod（1）The screw for connecting as one
Head（2）, it is characterised in that：Described screw rod（1）Leading portion be provided with double tooth tapping screw threads（4）, its back segment is polished rod（3）,
Polished rod（3）On be provided with one or more anti-drop device.
2. cervical posterior approach single open-door fixing screws according to claim 1, it is characterised in that：The anti-drop device bag
Include and be provided with polished rod（3）On groove（7）, spring leaf（8）One end be welded on groove（7）The bottom of lower end, the other end from
Groove（7）Stretch out oral area upper end.
3. cervical posterior approach single open-door fixing screws according to claim 1, it is characterised in that：The head of screw（2）
For spherical structure, in head of screw（2）On be cased with turning sleeve（5）, the turning sleeve（5）With head of screw（2）Universal connection, in screw
Head（2）Top be provided with interior six square groove（10）, in turning sleeve（5）Both sides be provided with through hole（6）, silk thread（9）One end wear
Cross through hole（6）After be bundled in turning sleeve（5）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620729608.2U CN206080672U (en) | 2016-07-12 | 2016-07-12 | Cervical vertebra posterior approach operation set screw that singly opens door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620729608.2U CN206080672U (en) | 2016-07-12 | 2016-07-12 | Cervical vertebra posterior approach operation set screw that singly opens door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206080672U true CN206080672U (en) | 2017-04-12 |
Family
ID=58464930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620729608.2U Expired - Fee Related CN206080672U (en) | 2016-07-12 | 2016-07-12 | Cervical vertebra posterior approach operation set screw that singly opens door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206080672U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108013923A (en) * | 2017-12-01 | 2018-05-11 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | A kind of anchors strengthens bone screws |
| CN110074832A (en) * | 2019-06-17 | 2019-08-02 | 燕飞 | A kind of posterior cervical self-locking struts fixator |
-
2016
- 2016-07-12 CN CN201620729608.2U patent/CN206080672U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108013923A (en) * | 2017-12-01 | 2018-05-11 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | A kind of anchors strengthens bone screws |
| CN110074832A (en) * | 2019-06-17 | 2019-08-02 | 燕飞 | A kind of posterior cervical self-locking struts fixator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20190712 |