CN205814411U - A kind of pedicle screw holder - Google Patents
A kind of pedicle screw holder Download PDFInfo
- Publication number
- CN205814411U CN205814411U CN201620464807.5U CN201620464807U CN205814411U CN 205814411 U CN205814411 U CN 205814411U CN 201620464807 U CN201620464807 U CN 201620464807U CN 205814411 U CN205814411 U CN 205814411U
- Authority
- CN
- China
- Prior art keywords
- pedicle screw
- universal joint
- stationary platen
- pedicle
- screw
- 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
nullThe utility model discloses a kind of pedicle screw holder，Including pedicle screw、Anti-down spin nut、Hold-down bars and stationary platen，Described pedicle screw top is provided with hexagon screw platform，Hexagon screw platform is provided with stationary platen，Pedicle of vertebral arch screw above stationary platen nails on and is provided with anti-down spin nut，Stationary platen side is provided with spherical draw-in groove，It is provided with universal joint in spherical draw-in groove，Universal joint end face is provided with arc rail stricture of vagina tooth，Universal joint is arranged on the two ends of hold-down bars，Ti-ni shape memory alloy it is provided with in the middle part of hold-down bars，Described a kind of pedicle screw holder，Simple in construction，Easy to operate，It is easy to the stability hammering into and locking of pedicle screw，It is prevented effectively from stationary platen to get loose，Ensure that universal joint does not slips，Universal joint activity is adjustable，Reduce the shearing that pedicle screw is subject to，Make pedicle screw not easy fracture，Fixation，Can be with dispersive stress，Reduce the symptoms such as short trunk in late period to occur，Safe and reliable.
Description
Technical field
This utility model relates to orthopedic fixer tool technical field, specifically a kind of pedicle screw holder.
Background technology
It is known that internal fixation of spine is since 20 century 70s, it is widely used in the treatment of various spinal disease, bag
Including regression, wound, tumor and deformity, pedicle screw systems is by running through three posts of spinal column before backward, fixing, no in can realizing firmly
As under vertebral plate, rear pillar only fixed by steel wire and hook, pedicle screw is fixed and is increasingly becoming the goldstandard that Via Posterior Spinal Approach is stable.
Existing pedicle screw fixer structure is complicated, it is relatively complicated to operate, and pedicle screw can not undertake bigger
Lifting strength, easily slips when treatment, and the angle location between pedicle screw and pitman is unadjustable, causes pedicle of vertebral arch
Screw becomes angular region shearing excessive, causes pedicle screw to rupture, and the pedicle screw holder of routine fixing after can not adjust,
Along with the growth of health spinal column, the symptoms such as short trunk in late period are caused to occur.
Summary of the invention
The purpose of this utility model is to provide a kind of pedicle screw holder, to solve to propose in above-mentioned background technology
Problem.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of pedicle screw holder, including pedicle screw, anti-down spin nut, hold-down bars and stationary platen, described
Pedicle screw top is provided with hexagon screw platform, and hexagon screw platform is provided with stationary platen, the vertebral arch above stationary platen
Root screw is provided with anti-down spin nut, and stationary platen side is provided with spherical draw-in groove, is provided with universal joint, universal joint end in spherical draw-in groove
Face is provided with arc rail stricture of vagina tooth, and universal joint is arranged on the two ends of hold-down bars, is provided with ti-ni shape memory alloy in the middle part of hold-down bars.
As further program of the utility model: the pedicle screw surface below described hexagon screw platform is provided with pine
Matter bone thread.
As further program of the utility model: described anti-down spin nut and stationary platen junction are provided with cushion
Sheet.
As further program of the utility model: described arc rail stricture of vagina tooth is fastened in stricture of vagina tooth lock slots, stricture of vagina tooth lock slots
It is arranged on spherical draw-in groove inwall.
As further program of the utility model: leave gap between described spherical draw-in groove and universal joint.
As further program of the utility model: described ti-ni shape memory alloy is arcuate structure.
Compared with prior art, the beneficial effects of the utility model are: described a kind of pedicle screw holder, structure letter
Single, easy to operate, it is simple to the stability hammering into and locking of pedicle screw, it is prevented effectively from stationary platen and gets loose, it is ensured that ten thousand
Not slipping to joint, universal joint activity is adjustable, reduces the shearing that pedicle screw is subject to, and makes pedicle screw not easy fracture, Gu
Fixed firm, the symptoms such as short trunk in late period can be reduced occur with dispersive stresses, safe and reliable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of universal joint in this utility model.
In figure: 1-pedicle screw, 2-hexagon screw platform, the spherical draw-in groove of 3-, the anti-down spin nut of 4-, 5-elastomeric pad,
6-ti-ni shape memory alloy, 7-hold-down bars, 8-stationary platen, 9-universal joint, 10-arc rail stricture of vagina tooth, 11-stricture of vagina tooth lock slots, 12-spongiosa
Bone thread.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1～2, in this utility model embodiment, a kind of pedicle screw holder, including pedicle screw 1,
Anti-down spin nut 4, hold-down bars 7 and stationary platen 8, described pedicle screw 1 top is provided with hexagon screw platform 2, hexagon spiral shell
Pedicle screw 1 surface below nail platform 2 is provided with cancellous threads 12, it is simple to hammering into of pedicle screw 1 and stablizing of locking
Property, pedicle screw 1 is difficult to slip, and pedicle screw 1 can undertake bigger lifting strength, and hexagon screw platform 2 is provided with solid
Determining platen 8, the pedicle screw 1 above stationary platen 8 is provided with anti-down spin nut 4, and anti-down spin nut 4 is with stationary platen 8 even
The place of connecing is provided with elastomeric pad 5, anti-down spin nut 4 good fixing effect, is prevented effectively from stationary platen 8 and gets loose, and stationary platen 8 side sets
Having spherical draw-in groove 3, be provided with universal joint 9 in spherical draw-in groove 3, universal joint 9 end face is provided with arc rail stricture of vagina tooth 10, and arc rail stricture of vagina tooth 10 is fastened on
In stricture of vagina tooth lock slots 11, stricture of vagina tooth lock slots 11 is arranged on spherical draw-in groove 3 inwall, and the setting of spherical draw-in groove 3 ensure that universal joint 9
Not slipping, stricture of vagina tooth lock slots 11 has well card and sets fixed effect, between spherical draw-in groove 3 and universal joint 9 arc rail stricture of vagina tooth 10
Leave gap, it is ensured that universal joint 9 is movable adjustable, reduces the shearing that pedicle screw 1 is subject to, makes pedicle screw 1 be difficult to
Fracture.
Described universal joint 9 is arranged on the two ends of hold-down bars 7, is provided with ti-ni shape memory alloy 6 in the middle part of hold-down bars 7, and titanium nickel is remembered
Alloy 6 is arcuate structure, and ti-ni shape memory alloy 6 has good temperature memory function, has good biocompatibility simultaneously,
The most safe and nontoxic, nothing is repelled, and fixation can be with dispersive stress, it is simple to ti-ni shape memory alloy 6 is trailed by bending, keeps away
Exempt from the generation of hold-down bars 7 forced breakage, reduce the symptoms such as short trunk in late period and occur, meet body mechanics's characteristic, safe and reliable.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this practicality in other specific forms new
Type.Therefore, no matter from the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, this practicality is new
The scope of type is limited by claims rather than described above, it is intended that by the containing of equivalency in claim that fall
All changes in justice and scope are included in this utility model.Should not be considered as any reference in claim limiting
Involved claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (6)
1. a pedicle screw holder, including pedicle screw, anti-down spin nut, hold-down bars and stationary platen, its feature
Being, described pedicle screw top is provided with hexagon screw platform, and hexagon screw platform is provided with stationary platen, on stationary platen
The pedicle of vertebral arch screw of side nails on and is provided with anti-down spin nut, and stationary platen side is provided with spherical draw-in groove, is provided with universal joint in spherical draw-in groove,
Universal joint end face is provided with arc rail stricture of vagina tooth, and universal joint is arranged on the two ends of hold-down bars, is provided with ti-ni shape memory alloy in the middle part of hold-down bars.
A kind of pedicle screw holder the most according to claim 1, it is characterised in that below described hexagon screw platform
Pedicle screw surface be provided with cancellous threads.
A kind of pedicle screw holder the most according to claim 1, it is characterised in that described anti-down spin nut is with fixing
Platen junction is provided with elastomeric pad.
A kind of pedicle screw holder the most according to claim 1, it is characterised in that described arc rail stricture of vagina tooth is fastened on stricture of vagina
In tooth lock slots, stricture of vagina tooth lock slots is arranged on spherical draw-in groove inwall.
A kind of pedicle screw holder the most according to claim 1, it is characterised in that described spherical draw-in groove and universal joint
Between leave gap.
A kind of pedicle screw holder the most according to claim 1, it is characterised in that described ti-ni shape memory alloy is arc
Shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620464807.5U CN205814411U (en) | 2016-05-22 | 2016-05-22 | A kind of pedicle screw holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620464807.5U CN205814411U (en) | 2016-05-22 | 2016-05-22 | A kind of pedicle screw holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205814411U true CN205814411U (en) | 2016-12-21 |
Family
ID=57558143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620464807.5U Expired - Fee Related CN205814411U (en) | 2016-05-22 | 2016-05-22 | A kind of pedicle screw holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205814411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106108996A (en) * | 2016-07-18 | 2016-11-16 | 哈尔滨理工大学 | A kind of pedicle screw holder |
-
2016
- 2016-05-22 CN CN201620464807.5U patent/CN205814411U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106108996A (en) * | 2016-07-18 | 2016-11-16 | 哈尔滨理工大学 | A kind of pedicle screw holder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20161221 Termination date: 20170522 |