CN203458466U - Spine pedicle screw planter - Google Patents
Spine pedicle screw planter Download PDFInfo
- Publication number
- CN203458466U CN203458466U CN201320563254.5U CN201320563254U CN203458466U CN 203458466 U CN203458466 U CN 203458466U CN 201320563254 U CN201320563254 U CN 201320563254U CN 203458466 U CN203458466 U CN 203458466U
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- CN
- China
- Prior art keywords
- core bar
- pedicle screw
- locking bushing
- locating piece
- nail device
- 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 - Lifetime
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Abstract
The utility model discloses a spine pedicle screw planter which comprises a core rod and a locking sleeve, wherein the locking sleeve is nested on the periphery of the core rod; an operation part is arranged at the tail end of the core rod; external threads are formed in one end, corresponding to the operation part, of the locking sleeve; a positioning device is nested on the core rod; and the core rod and the locking sleeve can be selectively connected into a whole through the positioning device to rotate synchronously. According to the spine pedicle screw planter, the slideable positioning device is arranged on the core rod and drives the locking sleeve to rotate with the core rod, so that the phenomenon that a spine pedicle screw slips from the locking sleeve is avoided, the consistency of corresponding positions of the screw planter and the screw is guaranteed, planting failure of the spine pedicle screw in an operation is prevented, and the operation safety factor is improved greatly at the same time.
Description
Technical field
This utility model relates to a kind of bone surgery set, is that a kind of pedicle screw that is applicable to spinal internal fixation system is planted nail device specifically.
Background technology
Spinal vertebral pathological changes is puzzlement people's commonly encountered diseases and frequently-occurring disease, and the main operation for the treatment of this kind of disease is to carry out spinal column lesion resection, then carries out column reconstruction.It is fixing that this operation need to be used spinal stabilization system to carry out in vertebral body conventionally on spinal column, and spinal stabilization system is commonly called as nail-stick system.Described nail-stick system structure is: the two ends of spinal rod are separately installed with pedicle screw.On spinal column, during staple bar system, needing to use specific purpose tool---spinal screw is planted nail device and is fixed pedicle screw.The pedicle screw using is at present divided into: Universal screw nail, universal long-tail screw, One-way screw, unidirectional long-tail screw, the pedicle screw being used in combination is with it planted nail device and is divided into: Universal screw nail is planted nail device, and universal long-tail screw is planted nail device, One-way screw is planted nail device, and unidirectional long-tail screw is planted nail device.While using clinically, the core bar head of planting nail device is put into the U-shaped groove of pedicle nail, locking bushing end thread and U-shaped groove female thread screw.One holds and plants nail device flexible handle, rotate on the other hand the handwheel fixing with planting nail device core bar, in U-shaped groove due to pedicle nail, be provided with and plant the screw thread that is used in conjunction with of nail device locking bushing end, rotating like this handwheel fixes locking bushing and pedicle screw, and then turning handle, make core bar drive pedicle screw to rotate and implant in vertebral body.Said structure is not owing to there is no fixing and locking device, when holding handle and applying radial force downwards, can make locking bushing and pedicle screw reversion, thereby cause locking bushing and screw slippage, is difficult to fixedly pedicle screw of accurate stable, strengthened operation danger coefficient.
Utility model content
In order to address the above problem, the purpose of this utility model is to provide a kind of pedicle screw and plants nail device, and it can not cause the situation of pedicle screw and locking bushing slippage when upper nail, and then increases the safety coefficient of operation.
For achieving the above object, this utility model is taked following technical scheme:
Pedicle screw is planted a nail device, and it comprises core bar and locking bushing, and this locking bushing is set in this core bar periphery; This core bar end has operating portion, and one end that this locking bushing is corresponding with this operating portion is provided with external screw thread, on this core bar, is arranged with positioner, and this core bar and this locking bushing are optionally connected as a single entity by this positioner and synchronously rotate.
Further, described positioner comprises locating piece, and this locating piece slides and is located on described core bar; The inner radial of this locating piece offers location blind hole, and this location blind hole is provided with spring and fixture block from inside to outside successively, and this fixture block passes through the elastic compression of this spring on this core bar; Stretch out outside this location blind hole this fixture block one end;
The other end that described locking bushing is relative with described operating portion is fixed with hands wheel; Between this locating piece and this handwheel, be provided with intermeshing ratchet, this core bar is provided with groove in the position of this locating piece and the engagement of described handwheel, and this fixture block can be fallen into this groove and make this positioner and this core bar latched position.
Preferably, described locking bushing middle part is provided with flexible handle.
Further, described operating portion is cross or T font, cross outer six sides and screw axial location, the U-shaped groove of cross flank and screw location
Further, the other end that described core bar is relative with described operating portion is provided with fixed handle.
Preferably, described fixed handle is connected with described core bar by hydraulic quick coupler.
The beneficial effects of the utility model are: pedicle screw of the present utility model is planted nail device and on core bar, placed slidably after positioner, positioner drives locking bushing to rotate together with core bar, generation locking bushing and pedicle screw reversion slip phenomenon have been avoided, guaranteed to plant the concordance of nail device and screw relative position, prevent from performing the operation and insert pedicle screw failure, greatly improved operation safety coefficient simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation that this utility model pedicle screw is planted nail device.
Fig. 2 is the enlarged diagram at A place in Fig. 1.
Fig. 3 is the structural representation of handwheel of the present utility model and locating piece.
Fig. 4 is the structural representation of this utility model band flexible handle and fixed handle.
The specific embodiment
Referring to accompanying drawing and example, this utility model is described in detail.
This utility model provides a kind of pedicle screw to plant nail device, and it comprises core bar 1 and locking bushing 2, and this locking bushing 2 is set in this core bar 1 periphery.This core bar 1 end has operating portion 11, can be for cross type or T font, and corresponding with pedicle screw ailhead.One end that this locking bushing 2 is corresponding with this operating portion 11 is provided with external screw thread, the U-shaped groove of screw-in pedicle screw and then fixedly pedicle screw.In practice, during for long-tail screw, plant the pitch of thread of nail device from the distance of core bar head, screw thread distance when for short-tail screw.
The difference that this utility model and existing pedicle screw are planted nail device is, on core bar 1 of the present utility model, be arranged with positioner, this core bar 1 and this locking bushing 2 are optionally connected as a single entity by this positioner and synchronously rotate, can, according to action need, this core bar 1 and this locking bushing 2 be connected as a single entity or separate.
As shown in Figure 1 and Figure 2, this positioner comprises locating piece 3, and this locating piece 3 slides and is located on this core bar 1.The inner radial of this locating piece 3 offers location blind hole, and this location blind hole is provided with spring 31 and fixture block 32 from inside to outside successively, and the elastic compression that this fixture block 32 passes through this spring 31 is on this core bar 1.Stretch out outside this location blind hole these fixture block 32 one end, after operator presses, makes this fixture block 32 depart from this core bar 1.The other end that this locking bushing 2 is relative with this operating portion 11 is fixed with handwheel 21, as shown in Figure 3, between this locating piece 3 and this handwheel 21, be provided with intermeshing ratchet, this core bar 1 is provided with groove in this locating piece 3 and the position of these handwheel 21 engagements, this fixture block 32 can be fallen into this groove and make this locating piece 3 and this core bar 1 latched position, meanwhile, also can press this fixture block 32 and make it depart from this groove, make this locating piece 3 and this core bar 1 recover sliding mode.
The relative core bar 1 of fixture block 32 of locating piece 3 becomes slide block, presses fixture block 32, and locating piece 3 can slide on core bar 1, unclamps fixture block 32 while sliding into core bar 1 groove location, and fixture block 32 is stuck in the groove of core bar 1, and then core bar 1 and locating piece 3 are fixed into one.And locating piece 3 and handwheel 21 ratchet by separately interconnects, core bar 1 is fixed into one with locating piece 3 simultaneously, rotates core bar 1, drives locking bushing 2 to rotate together, so, can avoid locking bushing 2 and screw slippage, improve operation safety coefficient.
Certainly, this positioner can be also other structures, as long as this core bar and this locking bushing are connected as a single entity and can be synchronously rotated.For example, can, in this locking bushing and this core bar correspondence position perforate, in hole, place pin.
As shown in Figure 4, for easy to operate, these locking bushing 2 middle parts are provided with flexible handle 22.Further, the other end that this core bar 1 is relative with this operating portion 11 is provided with fixed handle 12.Preferably, this fixed handle 12 is connected with this core bar 1 by hydraulic quick coupler 13.
Plant nail while following closely on device utilizing this utility model pedicle screw, first the operating portion of core bar 1 11 is put into the U-shaped groove of pedicle of vertebral arch, pressing fixture block 32 outwards slides, make locating piece 3 separated with handwheel 21, then one hold flexible handle 22, rotate on the other hand handwheel 21 and allow and be threaded into the U-shaped groove female thread of pedicle screw on locking bushing 2, pedicle screw is fixed on locking bushing 2; And then press fixture block 32 slip locating pieces 3, together with intermeshing with handwheel 21 ratchets, unclamp fixture block 32, now fixture block 32 falls in the groove of core bar 1, core bar 1 and locking bushing 2 are fixed into one, then rotate fixed handle 12, drive core bar 1, locating piece 3, handwheel 21, locking bushing 2 rotates together, and then drives pedicle screw to be screwed into vertebral body, until relevant position.Can there is not the phenomenon of locking bushing 2 and screw reversion slippage in this process, accurately upper nail, has reduced operation risk coefficient.On nail into after, press fixture block 32 locating piece 3 outwards slided, the sleeve 2 that goes out of lock, then rotates backward handwheel 21, locking bushing 2 is screwed out to the U-shaped groove of pedicle screws, takes off pedicle screw and plants nail device.
This utility model has been placed slidably after positioner on core bar, positioner drives locking bushing to rotate together with core bar, generation locking bushing and pedicle screw slip phenomenon have been avoided, guaranteed to plant the concordance of nail device and screw relative position, prevent from performing the operation and insert pedicle screw failure, greatly improved operation safety coefficient simultaneously.
This utility model is limited with described claim.But based on this, those of ordinary skill in the art can make all obvious variations or change, all should be within main spirits of the present utility model and protection domain.
Claims (6)
1. pedicle screw is planted a nail device, and it comprises core bar and locking bushing, and this locking bushing is set in this core bar periphery; This core bar end has operating portion, and one end that this locking bushing is corresponding with this operating portion is provided with external screw thread, it is characterized in that, on this core bar, is arranged with positioner, and this core bar and this locking bushing are optionally connected as a single entity by this positioner and synchronously rotate.
2. pedicle screw according to claim 1 is planted nail device, it is characterized in that: described positioner comprises locating piece, and this locating piece slides and is located on described core bar; The inner radial of this locating piece offers location blind hole, and this location blind hole is provided with spring and fixture block from inside to outside successively, and this fixture block passes through the elastic compression of this spring on this core bar; Stretch out outside this location blind hole this fixture block one end;
The other end that described locking bushing is relative with described operating portion is fixed with hands wheel; Between this locating piece and this handwheel, be provided with intermeshing ratchet, this core bar is provided with groove in the position of this locating piece and the engagement of described handwheel, and this fixture block can be fallen into this groove and make this positioner and this core bar latched position.
3. pedicle screw according to claim 1 and 2 is planted nail device, it is characterized in that: described locking bushing middle part is provided with flexible handle.
4. pedicle screw according to claim 3 is planted nail device, it is characterized in that: described operating portion is cross or T font.
5. pedicle screw according to claim 1 is planted nail device, it is characterized in that: the other end that described core bar is relative with described operating portion is provided with fixed handle.
6. pedicle screw according to claim 5 is planted nail device, it is characterized in that: described fixed handle is connected with described core bar by hydraulic quick coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563254.5U CN203458466U (en) | 2013-09-11 | 2013-09-11 | Spine pedicle screw planter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563254.5U CN203458466U (en) | 2013-09-11 | 2013-09-11 | Spine pedicle screw planter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203458466U true CN203458466U (en) | 2014-03-05 |
Family
ID=50170848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320563254.5U Expired - Lifetime CN203458466U (en) | 2013-09-11 | 2013-09-11 | Spine pedicle screw planter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203458466U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596077A (en) * | 2016-02-06 | 2016-05-25 | 贺新宁 | Universal screw-setting device for pedicle screw |
| CN111012473A (en) * | 2019-12-31 | 2020-04-17 | 浙江康慈医疗科技有限公司 | A go up nail spanner when being used for unipolar pedicle of vertebral arch screw to implant |
| CN111012472A (en) * | 2019-12-31 | 2020-04-17 | 浙江康慈医疗科技有限公司 | A go up nail spanner when being used for multiaxis pedicle of vertebral arch screw to implant |
| 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 |
-
2013
- 2013-09-11 CN CN201320563254.5U patent/CN203458466U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596077A (en) * | 2016-02-06 | 2016-05-25 | 贺新宁 | Universal screw-setting device for pedicle screw |
| CN111012473A (en) * | 2019-12-31 | 2020-04-17 | 浙江康慈医疗科技有限公司 | A go up nail spanner when being used for unipolar pedicle of vertebral arch screw to implant |
| CN111012472A (en) * | 2019-12-31 | 2020-04-17 | 浙江康慈医疗科技有限公司 | A go up nail spanner when being used for multiaxis pedicle of vertebral arch screw to implant |
| 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 |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140305 |
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| CX01 | Expiry of patent term |