CN203506856U - Lumbar vertebra posterior dynamic internal fixing system - Google Patents
Lumbar vertebra posterior dynamic internal fixing system Download PDFInfo
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- CN203506856U CN203506856U CN201320631301.5U CN201320631301U CN203506856U CN 203506856 U CN203506856 U CN 203506856U CN 201320631301 U CN201320631301 U CN 201320631301U CN 203506856 U CN203506856 U CN 203506856U
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- dynamic internal
- screw
- fixing system
- fixation system
- internal fixing
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Abstract
The utility model discloses a dynamic internal fixing system. The dynamic internal fixing system comprises an elastic part which is provided with a rod part and a spring, wherein the spring is arranged in the middle of the rod part and is elastic. The dynamic internal fixing system further comprises a pair of universal screws, wherein the universal screws are arranged on the two sides of the spring of the elastic part and are arranged in the rod part in a sleeved mode, each universal screw comprises a screw base and a ball screw, each ball screw is arranged in an opening in the bottom of the corresponding screw base. According to the dynamic internal fixing system, the structure is simple, operation can be conducted easily, and the movement function of the sections on which lumbar surgery is conducted can be effectively maintained.
Description
Technical field
This utility model relates to a kind of dynamic internal fixation system of implant into body of lumbar surgery use, while being specifically related to a kind of posterior lumbar spinal surgery, can strut the posterior column structure of adjacent two vertebral bodys of lumbar vertebra and can allow posterior column structure keep the dynamic internal fixation system (, spinal internal fixation system) of certain mobility.
Background technology
Along with the progress of social senilization, there is the patient of lumbar disc disease more and more, have a strong impact on patient's quality of life, and become the great burden of society and family.Patient for the lumbar spinal stenosis causing because of regression and lumbar instability says, operation be alleviate ailing, recover the Main Means of orthobiosis.Current existing lumbar spinal fusion has become the effective ways of the various degenerative lumbar scoliosis diseases for the treatment of.But lumbar vertebra carries out post-fusion can accelerate because abnormal stress and dyskinesis cause the regression of facing mutually sections.
For addressing this problem, in recent years, " the non-fusion of lumbar vertebra " technical development is got up, and its target is the lumbar vertebra motor function retaining as much as possible in range of operation.For this reason both at home and abroad scientific research personnel's research design multiple dynamic internal fixation system, as device for spreading between spinous process of lumbar vertebra, pedicle screw relies on dynamic fixation system, little joint replacement device of lumbar vertebral posterior etc., but all effectively do not address this problem.
Summary of the invention
In view of the problem that above-mentioned prior art exists, the problem that this utility model need to solve is to provide a kind of simple in structure, and operation technique is easy, and can effectively retain the dynamic internal fixation system of the lumbar vertebra posterior column structure of lumbar surgery segmentation movement function.
To achieve these goals, this utility model provides a kind of dynamic internal fixation system, comprising: elastomeric element, there is bar portion and spring, and described spring is arranged on the mid portion of described bar portion and has elasticity; And a pair of Universal screw nail, in the both sides of the spring of described elastomeric element, being inserted in described bar portion respectively, described Universal screw nail comprises screw base and ball screw, described ball screw is arranged in the opening of described screw base bottom.
Preferably, the ball head that described ball screw comprises shank and is arranged on the top of described shank.
Dynamic internal fixation system of the present utility model has following useful technique effect: simple in structure, operation technique is easy, and can effectively retain lumbar surgery segmentation movement function.
Accompanying drawing explanation
With reference to accompanying drawing below, describe embodiment in detail, identical Reference numeral represents identical element in the accompanying drawings, wherein:
Fig. 1 is the schematic configuration diagram according to dynamic internal fixation system of the present utility model; And
Fig. 2 is according to the schematic sectional view of the Universal screw nail in dynamic internal fixation system of the present utility model.
The specific embodiment
Below with reference to accompanying drawing, dynamic internal fixation system of the present utility model is described, but it should be understood that following examples are only for exemplary, and and unrestricted the application's scope, the application's scope should limit with appended claims.
First, with reference to Fig. 1, illustrate according to the concrete structure of dynamic internal fixation system 1 of the present utility model.
As shown in Figure 1, according to dynamic internal fixation system 1 of the present utility model, comprise: elastomeric element 3, the mid portion and the tool spring 31 springy that there is bar portion 32 and be arranged on bar portion 32; And a pair of Universal screw nail 2, this pair of Universal screw nail 2 is separately positioned on the both sides of the spring 31 of elastomeric element 3, and is inserted in bar portion 32.
In addition, according to dynamic internal fixation system 1 of the present utility model, also comprise two screw tail caps and two packing rings (all not shown), in order to lock with above-mentioned a pair of Universal screw nail 2 respectively.
And the length of Universal screw nail 2 and elastomeric element 3 can be carried out different selections according to the size of patient's lumbar vertebra.
When concrete application, can patient's lumbar vertebra each side arrange one, this dynamic internal fixation system 1 can strut the posterior column structure of adjacent two vertebral bodys of patient's lumbar vertebra, and can allow posterior column structure keep certain mobility.According to dynamic internal fixation system 1 of the present utility model, be particularly suitable for the patient of lumbar spinal stenosis and lumbar instability.
Then, with reference to Fig. 2, specifically describe the structure of Universal screw nail 2.
As shown in Figure 2, Universal screw nail 2 mainly comprises screw base 21 and ball screw 22, and this ball screw 22 is placed in the opening of these screw base 21 bottoms.
Simultaneously with reference to figure 1 and Fig. 2, the ball head 222 that this ball screw 22 comprises shank 221 and is arranged on shank 221 tops, this ball head 222 is placed in the opening of these screw base 21 bottoms and can rotates along any direction.On this shank 221, also there is screw thread (as shown in Figure 1), in order to the screw tail cap with above-mentioned, coordinate locking.
Dynamic internal fixation system of the present utility model has adopted screw 2 very much, thereby can effectively reduce interior fixing stress concentration.In addition, in the dynamic internal fixation system of this utility model, there is elastomeric element 3, thus can be so that operation segmentation movement function be retained.And, the implant site of Universal screw nail 2 is through drawing after anatomy, iconography and biomechanics Research in advance, this position is in spinous process of lumbar vertebra root and vertebral plate, can farthest increase the resistance to plucking output capacity of screw, safe and reliable, to make dynamic internal fixation system of the present utility model the become effective reservation motion segment dynamic internal fixation system of lumbar vertebra.
Meanwhile, the dynamic internal fixation system comparison of this utility model and existing lumbar vertebra, lower to doctor's operation requirements, reduced patient's operating difficulty, also improved operative effect.
Although described embodiment with reference to a plurality of exemplary embodiments, be understood that multiple other remodeling and embodiment that those skilled in the art can design all should fall in the design and scope of present disclosure principle.More specifically, various changes and correction are carried out in component and/or the arrangement that in the scope of present disclosure, accompanying drawing and appended claims, can arrange object composition.Except the change and correction of component and/or arrangement, alternative use is also clearly to those skilled in the art.
Claims (2)
1. a dynamic internal fixation system, is characterized in that, comprising:
Elastomeric element, has bar portion and spring, and described spring is arranged on the mid portion of described bar portion and has elasticity; And a pair of Universal screw nail, in the both sides of the spring of described elastomeric element, being inserted in described bar portion respectively, described Universal screw nail comprises screw base and ball screw, described ball screw is arranged in the opening of described screw base bottom.
2. dynamic internal fixation system according to claim 1, is characterized in that, the ball head that described ball screw comprises shank and is arranged on the top of described shank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631301.5U CN203506856U (en) | 2013-10-14 | 2013-10-14 | Lumbar vertebra posterior dynamic internal fixing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320631301.5U CN203506856U (en) | 2013-10-14 | 2013-10-14 | Lumbar vertebra posterior dynamic internal fixing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203506856U true CN203506856U (en) | 2014-04-02 |
Family
ID=50365845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320631301.5U Expired - Fee Related CN203506856U (en) | 2013-10-14 | 2013-10-14 | Lumbar vertebra posterior dynamic internal fixing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203506856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105559949A (en) * | 2015-12-16 | 2016-05-11 | 贝尔泰克医疗器械江苏有限公司 | Self-stabilized interbody fusion cage |
| CN106344137A (en) * | 2015-07-21 | 2017-01-25 | 东北大学 | Posterior thoracolumbar flexible fixing system |
-
2013
- 2013-10-14 CN CN201320631301.5U patent/CN203506856U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106344137A (en) * | 2015-07-21 | 2017-01-25 | 东北大学 | Posterior thoracolumbar flexible fixing system |
| CN105559949A (en) * | 2015-12-16 | 2016-05-11 | 贝尔泰克医疗器械江苏有限公司 | Self-stabilized interbody fusion cage |
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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 |
Granted publication date: 20140402 Termination date: 20141014 |
|
| EXPY | Termination of patent right or utility model |