CN201492491U - Self-locking return-prevention cervical vertebra screw-plate system - Google Patents
Self-locking return-prevention cervical vertebra screw-plate system Download PDFInfo
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- CN201492491U CN201492491U CN2009201704247U CN200920170424U CN201492491U CN 201492491 U CN201492491 U CN 201492491U CN 2009201704247 U CN2009201704247 U CN 2009201704247U CN 200920170424 U CN200920170424 U CN 200920170424U CN 201492491 U CN201492491 U CN 201492491U
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- screw
- cervical vertebra
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Abstract
The utility model discloses an orthopedic appliance for treating degeneration of cervical intervertebral disc, cervical spondylolisthesis, cervical canal stenosis, tumor, joint fusion failure, pseudoarthrosis formation, deformity and other diseases. A self-locking return-prevention cervical vertebra screw-plate system comprises a self-locking return-prevention cervical vertebra anterior screw-plate (1), an elastic baffle plate (2), and a self-tapping cervical vertebra screw (3). The system is characterized in that the self-tapping cervical vertebra screw (3) is provided with a self-tapping type threaded cone angle and provided with a smooth cylindrical platform and a threaded cross slot at the head part thereof; and the self-locking return-prevention cervical vertebra anterior screw-plate (1) adopts a low-notch, narrow-width and smooth cambered surface design, a window hole is arranged at the center of the steel plate, a spherical through hole and a small through hole are formed on the upper surface of the steel plate, and the central slot part of the spherical through hole is matched with the elastic baffle plate (2). The self-locking return-prevention cervical vertebra screw-plate system can realize stable self-locking return-prevention function by pulling off the vertebral body with a spring, holding the steel plate with a plate-holding wrench, fixing the steel plate with a locating pin, drilling a screw hole, holding the screw with a screw-holding wrench, and screwing the screw into the screw hole to enable the screw to be under self-lock on the steel plate.
Description
Technical field
This utility model relates to a kind of internal fixation of spine apparatus self-locking anti-back cervical vertebra pegboard systems, is applicable to diseases such as treatment intervertebral disc degradation disease, cervical spondylolisthesis, cervical spinal canal are narrow, tumor, joint fusion failure, pseudoarticulation formation, deformity.
Background technology
Diseases such as orthopaedics therapy cervical vertebra wound, degeneration, tumor and unstable spine, when carrying out anterior approach, internal fixation devices such as the H shape steel plate of many employings standard, cervical vertebra locking nail-plate and ZEPHIR pegboard systems.These apparatuses have that simple use, screw angular range are wide, the low incisura of steel plate, narrow width, lock function prevent the characteristics of screw reach, overcome drawbacks such as screw loosening, no intrinsic stability but also exist screw to lay difficulty, pressured etc.
Summary of the invention
This utility model under the prerequisite that keeps the prior art advantage, overcomes its drawback just, have structure rationally, simple operation, the self-locking structure advantage that overcomes the loosening of screw and come off.
The technical solution of the utility model is as follows:
Orthopaedics is clinical in internal fixation device self-locking anti-back cervical vertebra pegboard systems, form by self-locking anti-back anterior cervical plates (1), elastic block piece (2) and self tapping cervical vertebra screw (3), it is characterized in that: self tapping cervical vertebra screw (3) has the screw thread cone angle of self-taped type, and head has slick and sly cylinder table top and threaded cross recess; Self-locking anti-back anterior cervical plates (1), low incisura, narrow width and slick and sly cambered surface design leave fenestra in the middle of the steel plate, and the steel plate upper surface has sphere through hole and small through hole, and sphere through hole medial launder part cooperates with elastic block piece (2).
Self-locking anti-back anterior cervical plates (1): low incisura, narrow width and slick and sly cambered surface design, make operative incision little, can be accurately and cervical vertebrae physiological match, compress bone grafting, leave fenestra in the middle of the steel plate, be convenient to observe, the steel plate upper surface has sphere through hole and small through hole, being convenient to sight implants plate, sphere through hole medial launder part cooperates with elastic block piece (2), elastic block piece (2) is free to strain, restores automatically once more after the distortion with this to prevent that self tapping cervical vertebra screw (3) from withdrawing from after loosening, realizes stable self-locking anti-back function.
Self tapping cervical vertebra screw (3): have the screw thread cone angle of self-taped type, drill bit is accomplished fluently the hole that is fit to the degree of depth in the art, is convenient to screw is screwed in the vertebral body, and screw thread makes in the firm embedding vertebral body of nail body, deviating from when having stoped screw loosening.Head is that slick and sly cylinder table top is realized perfectly cooperating with the screw of steel plate, and screw head has cross recess, and its cross recess inside has screw thread, can be convenient to holding of cross like spanner and get, and makes things convenient for operation technique.Self tapping cervical vertebra screw (3) can go out plurality of specifications according to its diameter, Design of length, uses for operation.
By diagnosis such as CT or X-ray vertebra disease before the art, implement anterior approach: the intervertebral disc or the vertebral body sclerotin of excision damage, according to diagnosing self-locking anti-back anterior cervical plates (1) and the self tapping cervical vertebra screw (3) of selecting appropriate length.Dilator struts vertebral body, holding wrench holds and gets steel plate and be put on the vertebral body, holding the nail spanner with cross holds to take from and attacks cervical vertebra screw (3), make in its firm embedding vertebral body, prevent its rotation, loosening, screw is screwed in the screw, automatically restore once more after making elastic block piece (2) distortion, prevent to withdraw from behind the screw loosening with this, make screw be self-locking on the steel plate, realize stable self-locking anti-back function.
Self-locking anti-back cervical vertebra pegboard systems is narrow at treatment intervertebral disc degradation, cervical spondylolisthesis, cervical spinal canal, when tumor, joint fusion failure, pseudoarticulation formation, deformity, can have with cervical vertebrae physiological and match, compress bone grafting, fixation, stable self-locking anti-back function, and it is easy, simple to operate to put nail, damage for a short time, be suitable for the orthopaedics clinical application.
Description of drawings
Fig. 1 is a population structure sketch map of the present utility model;
Fig. 2 is self-locking anti-back anterior cervical plates of the present utility model (a 1) structure chart;
Fig. 3 is elastic block piece of the present utility model (a 2) structure chart.
Fig. 4 is self tapping cervical vertebra screw of the present utility model (a 3) structure chart.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
This self-locking anterior cervical vertebrae pegboard systems, form by self-locking anti-back anterior cervical plates (1), elastic block piece (2) and self tapping cervical vertebra screw (3), it is characterized in that: self tapping cervical vertebra screw (3) has the screw thread cone angle of self-taped type, and head has slick and sly cylinder table top and threaded cross recess; Self-locking anti-back anterior cervical plates (1), low incisura, narrow width and slick and sly cambered surface design leave fenestra in the middle of the steel plate, and the steel plate upper surface has sphere through hole and small through hole, and sphere through hole medial launder part cooperates with elastic block piece (2).Dilator struts vertebral body, holding wrench holds and gets steel plate and be put on the vertebral body, with the temporary fixed steel plate of positioning needle, under the cooperation of guider, implement boring, hold the nail spanner with cross and hold to take from and attack cervical vertebra screw (2), make in its firm embedding vertebral body, self tapping cervical vertebra screw is screwed in the screw, automatic once more the recovery prevents to withdraw from behind the self tapping cervical vertebra screw loosening with this after making the elastic block piece distortion, makes screw be self-locking on the steel plate, realizes stable self-locking anti-back function.
Claims (1)
1. self-locking anti-back cervical vertebra pegboard systems, form by self-locking anti-back anterior cervical plates (1), elastic block piece (2) and self tapping cervical vertebra screw (3), it is characterized in that: self tapping cervical vertebra screw (3) has the screw thread cone angle of self-taped type, and head has slick and sly cylinder table top and threaded cross recess; Self-locking anti-back anterior cervical plates (1), low incisura, narrow width and slick and sly cambered surface design leave fenestra in the middle of the steel plate, and the steel plate upper surface has sphere through hole and small through hole, and sphere through hole medial launder part cooperates with elastic block piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201704247U CN201492491U (en) | 2009-08-05 | 2009-08-05 | Self-locking return-prevention cervical vertebra screw-plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201704247U CN201492491U (en) | 2009-08-05 | 2009-08-05 | Self-locking return-prevention cervical vertebra screw-plate system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201492491U true CN201492491U (en) | 2010-06-02 |
Family
ID=42435701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201704247U Expired - Fee Related CN201492491U (en) | 2009-08-05 | 2009-08-05 | Self-locking return-prevention cervical vertebra screw-plate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201492491U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579124A (en) * | 2011-01-12 | 2012-07-18 | 北京市春立正达医疗器械股份有限公司 | Self-locking fixed part for surgical implant |
| CN105476704A (en) * | 2015-12-17 | 2016-04-13 | 周建明 | Anterior cervical plate fixation system |
| CN108113742A (en) * | 2018-02-09 | 2018-06-05 | 北京市富乐科技开发有限公司 | Anterior cervical plates |
| CN113059067A (en) * | 2021-04-25 | 2021-07-02 | 宁波兆盈医疗器械有限公司 | An assembly kit for installing an anti-return ring and an assembly method thereof |
-
2009
- 2009-08-05 CN CN2009201704247U patent/CN201492491U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579124A (en) * | 2011-01-12 | 2012-07-18 | 北京市春立正达医疗器械股份有限公司 | Self-locking fixed part for surgical implant |
| CN102579124B (en) * | 2011-01-12 | 2014-06-18 | 北京市春立正达医疗器械股份有限公司 | Self-locking fixed part for surgical implant |
| CN105476704A (en) * | 2015-12-17 | 2016-04-13 | 周建明 | Anterior cervical plate fixation system |
| CN108113742A (en) * | 2018-02-09 | 2018-06-05 | 北京市富乐科技开发有限公司 | Anterior cervical plates |
| CN113059067A (en) * | 2021-04-25 | 2021-07-02 | 宁波兆盈医疗器械有限公司 | An assembly kit for installing an anti-return ring and an assembly method thereof |
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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: 20100602 Termination date: 20160805 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |