CN204121148U - A kind of anterior plate fixation ball screw hole screw locking device - Google Patents
A kind of anterior plate fixation ball screw hole screw locking device Download PDFInfo
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- CN204121148U CN204121148U CN201420597408.7U CN201420597408U CN204121148U CN 204121148 U CN204121148 U CN 204121148U CN 201420597408 U CN201420597408 U CN 201420597408U CN 204121148 U CN204121148 U CN 204121148U
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- retainer ring
- ball screw
- screw hole
- plate fixation
- anterior plate
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Abstract
A kind of anterior plate fixation ball screw hole screw locking device, belongs to technical field of medical instruments.Comprise anterior plate fixation, two on anterior plate fixation with upper bolt aperture, it is characterized in that: the screw hole system on anterior plate fixation is ball screw hole, retainer ring is equipped with in ball screw hole, retainer ring outer wall is the sphere matched with ball screw hole spherical inner wall, retainer ring is provided with and self can be supportted large breach, is provided with groove between every two ball screw holes of anterior plate fixation transverse direction, and groove is built with the buckle of breach that can snap in retainer ring in two ball screw holes, side.This utility model can effectively prevent from having performed the operation the generation of hidden danger such as snap ring drops in the fine motion of rear screw, the exiting of screw, steel plate; The screw be spun on retainer ring can do the adjustment of angle in radial direction according to clinical needs when screwing in cervical vertebra; In addition, screw locking device knot wants simple, reliable, and doctor is easy and simple to handle, can reduce surgical procedure, time.
Description
Technical field
This utility model belongs to technical field of medical instruments, is specifically related to a kind of anterior plate fixation ball screw hole screw locking device.
Background technology
At present, both at home and abroad in approach surgery for cervical slippage, intervertebral disc of cervical vertebra degenerated pathological changes, tumor, wound all needs to adopt cervical spine locking steel plate to carry out internal fixtion recovery, and will meet low incisura for cervical spine locking steel plate, anti-back locks, the compound internal fixation treatment principles such as width is narrow, and vascular compression is few, in the fine motion of lock screw after having performed the operation, the exiting of lock screw, steel plate, snap ring drops and all can bring serious impact to patient.In order to overcome above-mentioned disadvantage, there has been proposed as notification number: 201759663U " locking type anterior cervical plate system ", the technical schemes such as publication number: 103932774A " anterior plate fixation helicla flute locking device ", but still there is many disadvantages in these technical schemes, as notification number: the technical scheme of 201759663U is: bone screw screws in cervical vertebral body by screw hole, screw hole is the female lock hole of tool in hole, described bone screw is spongy bone lock screw, at the screw head of spongy bone lock screw, there is the external screw thread with the screw-internal thread fit in lock hole.Though this scheme can guarantee that screw, steel plate and vertebral body are linked to be an entirety, can not get loose, can also play cervical vertebral body pressurization, but bone screw can not have any adjustment according to clinical needs relative to screw hole and anterior plate fixation angle, and the two can only locate a kind of plumbness, this makes troubles to the practical operation of operation.And the technical scheme of publication number: 103932774A is: anterior plate fixation at least lower surface and cervical curvature matches, anterior plate fixation is provided with countersunk head steel plate screw hole, the anterior plate fixation upper surface of side, countersunk head steel plate screw hole is provided with pressure cap groove, locking hole is provided with in pressure cap groove, the pressure cap of locking pressure cap cover is provided with in pressure cap groove, the end face correspondence that pressure cap groove and pressure cap contact is provided with by dark gradually shallow slideway and slide block, the pit mutually locked and projection, and pressure cap is provided with the location pressure handle of steel plate screw in countersunk head steel plate screw hole, location.Though technique scheme countersunk head steel plate screw hole is without screw thread, steel plate screw can do certain adjustment according to clinical needs relative to countersunk head steel plate screw hole and anterior plate fixation angle, the stability of anterior spinal column can be increased and prevent deviating from of implant simultaneously, but above-mentioned description shows its complex structure, thus manufacturing cost is not low, uses operation also remarkable clinically.
Summary of the invention
The purpose of this utility model is the disadvantage existed for prior art, a kind of anterior plate fixation ball screw hole screw locking device is provided, it can effectively prevent from having performed the operation the generation of hidden danger such as snap ring drops in the fine motion of rear screw, the exiting of screw, steel plate, again because retainer ring outer wall is the sphere matched with ball screw hole spherical inner wall, so the screw be spun on retainer ring can do the adjustment of angle in radial direction according to clinical needs when screwing in cervical vertebra; In addition, screw locking device structure is simple, reliable, and can accelerate operation and put nail, quick locking screw, doctor is easy and simple to handle, can reduce surgical procedure, time.
Above-mentioned goal of the invention is achieved through the following technical solutions:
A kind of anterior plate fixation ball screw hole screw locking device, comprise anterior plate fixation, two on anterior plate fixation with upper bolt aperture, its main points are: the screw hole on anterior plate fixation is ball screw hole, retainer ring is equipped with in ball screw hole, retainer ring outer wall is the sphere matched with ball screw hole spherical inner wall, retainer ring is provided with and self can be supportted large breach, groove is provided with between every two ball screw holes of anterior plate fixation transverse direction, groove is built with snapping in the breach of retainer ring in two ball screw holes, side by buckle large for fixing central shoring, support large retainer ring diameter and be greater than the diameter exposing the hole of plane on anterior plate fixation in ball screw hole.Namely retainer ring is locked in ball screw hole.
As preferably, its endoporus of described retainer ring becomes the conical surface, consistent with screw tapering.
As preferably, retainer ring is made up of polyethylene and PEEK material, and screw directly can screw in retainer ring endoporus self-assembling formation screwed hole.
As preferably, described snapping into is square, and bottom is provided with snap notches, and two sides of snap notches are the dops of the breach snapping in retainer ring, thickness with can snap in groove, the gap width of retainer ring matches, the bottom of dop is provided with the tapering of the breach easily snapping in retainer ring.
Use operation of the present utility model is as follows: be first placed on by retainer ring in the ball screw hole on anterior plate fixation, by the groove of the notch alignment anterior plate fixation of retainer ring, again buckle is loaded groove, now the dop of buckle snaps in the breach of retainer ring and struts retainer ring, support large retainer ring diameter and be greater than the diameter exposing the hole of plane on anterior plate fixation in ball screw hole, retainer ring is made to latch in anterior plate fixation ball screw hole, stop it to deviate from, again screw is screwed in retainer ring, adjust the radial angle that screw screws in cervical vertebra, finally screw is screwed in cervical vertebra, complete the locking of screw and anterior plate fixation, now retainer ring and screw as a whole, and retainer ring latches in anterior plate fixation ball screw hole by anterior plate fixation, thus reach screw lock and fix on object on anterior plate fixation.
Show from above description, this utility model it not only meet cervical spine locking steel plate will low incisura, anti-back locks, width is narrow, the compound internal fixation treatment principles such as vascular compression is few, effectively can be prevented from having performed the operation the generation of hidden danger such as snap ring drops in the fine motion of rear screw, the exiting of screw, steel plate, again because retainer ring outer wall is the sphere matched with ball screw hole spherical inner wall, so the screw be spun on retainer ring can do the adjustment of angle in radial direction according to clinical needs when screwing in cervical vertebra; In addition, screw locking device knot wants simple, reliable, and can accelerate operation and put nail, quick locking screw, doctor is easy and simple to handle, can reduce surgical procedure, time.
Accompanying drawing explanation
Fig. 1: this utility model structural representation front view
A-A sectional view of Fig. 2: Fig. 1
Anterior plate fixation front view in Fig. 3: Fig. 1
The left view of Fig. 4: Fig. 3
The enlarged front view of retainer ring in Fig. 5: Fig. 1
B--B sectional view in Fig. 6: Fig. 5
Buckle enlarged front view in Fig. 7: Fig. 1
C--C sectional view in Fig. 8: Fig. 7
Fig. 9: screw structure for amplifying schematic diagram
In Fig. 1-9,1-anterior plate fixation, 2-screw hole and ball screw hole, 3-retainer ring, 4-breach, 5-groove, 6-buckle, 7-screw, 8-endoporus, 9-snap notches, 10-dop.
Detailed description of the invention
Just Fig. 1--faced by the embodiment represented by 9, this utility model is further described below.
It comprises anterior plate fixation 1, 6 screw holes 2 on anterior plate fixation 1, screw hole 2 on anterior plate fixation 1 is be ball screw hole 2, retainer ring 3 is equipped with in ball screw hole 2, retainer ring 3 outer wall is the sphere matched with ball screw hole 2 spherical inner wall, retainer ring 3 is provided with and self can be supportted large breach 4, groove 5 is provided with between every two ball screw holes 2 of anterior plate fixation 1 transverse direction, retainer ring 3 is supportted large buckle 6 built with the breach 4 that can snap in retainer ring 3 in two ball screw holes, side 2 by groove 5, support large retainer ring 3 diameter and be greater than the diameter exposing the hole of plane on anterior plate fixation 1 in ball screw hole 2, namely retainer ring 3 is locked in ball screw hole 2, its endoporus 8 one-tenth conical surface of described retainer ring 3, consistent with screw 7 tapering, retainer ring 3 is made up of polyethylene and PEEK material, and screw 7 directly can screw in retainer ring 3 endoporus 8 self-assembling formation screwed hole.From described buckle 6 squarely, bottom is provided with snap notches 9, two sides of snap notches 9 are the dops 10 of the breach 4 snapping in retainer ring 3, thickness with can snap in groove 5, breach 4 width of retainer ring 3 matches, the bottom of dop 10 is provided with the tapering of the breach 4 easily snapping in retainer ring 3.
Claims (5)
1. an anterior plate fixation ball screw hole screw locking device, comprise anterior plate fixation, two on anterior plate fixation with upper bolt aperture, it is characterized in that: the screw hole system on anterior plate fixation is ball screw hole, retainer ring is equipped with in ball screw hole, retainer ring outer wall is the sphere matched with ball screw hole spherical inner wall, retainer ring is provided with and self can be supportted large breach, groove is provided with between every two ball screw holes of anterior plate fixation transverse direction, groove is built with snapping in the breach of retainer ring in two ball screw holes, side by buckle large for fixing central shoring, support large retainer ring diameter and be greater than the diameter exposing the hole of plane on anterior plate fixation in ball screw hole, namely retainer ring is locked in ball screw hole.
2. a kind of anterior plate fixation ball screw hole according to claim 1 screw locking device, is characterized in that: its endoporus of described retainer ring becomes the conical surface, consistent with screw tapering.
3. a kind of anterior plate fixation ball screw hole according to claim 1 and 2 screw locking device, it is characterized in that: retainer ring is made up of polyethylene and PEEK material, screw directly can screw in retainer ring endoporus self-assembling formation screwed hole.
4. a kind of anterior plate fixation ball screw hole according to claim 1 and 2 screw locking device, it is characterized in that: described snapping into is square, bottom is provided with snap notches, two sides of snap notches are the dops of the breach snapping in retainer ring, thickness with can snap in groove, the gap width of retainer ring matches, the bottom of dop is provided with the tapering of the breach easily snapping in retainer ring.
5. a kind of anterior plate fixation ball screw hole according to claim 3 screw locking device, it is characterized in that: described snapping into is square, bottom is provided with breach, two sides of breach are the dops snapping in retainer ring breach, thickness with can snap in groove, the gap width of retainer ring matches, the bottom of dop is provided with the tapering of the breach easily snapping in retainer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597408.7U CN204121148U (en) | 2014-10-16 | 2014-10-16 | A kind of anterior plate fixation ball screw hole screw locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420597408.7U CN204121148U (en) | 2014-10-16 | 2014-10-16 | A kind of anterior plate fixation ball screw hole screw locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204121148U true CN204121148U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420597408.7U Active CN204121148U (en) | 2014-10-16 | 2014-10-16 | A kind of anterior plate fixation ball screw hole screw locking device |
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| CN (1) | CN204121148U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108113742A (en) * | 2018-02-09 | 2018-06-05 | 北京市富乐科技开发有限公司 | Anterior cervical plates |
| CN108606830A (en) * | 2016-12-12 | 2018-10-02 | 创生医疗器械（中国）有限公司 | A kind of posterior cervical laminoplasty system |
| CN109646103A (en) * | 2019-01-22 | 2019-04-19 | 李涛 | A kind of upper cervical spine inner fixing device of preceding road implantation |
| CN109674522A (en) * | 2019-02-22 | 2019-04-26 | 苏州吉美瑞医疗器械股份有限公司 | A kind of anterior cervical vertebrae fixed system |
-
2014
- 2014-10-16 CN CN201420597408.7U patent/CN204121148U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108606830A (en) * | 2016-12-12 | 2018-10-02 | 创生医疗器械（中国）有限公司 | A kind of posterior cervical laminoplasty 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 |
| CN109646103A (en) * | 2019-01-22 | 2019-04-19 | 李涛 | A kind of upper cervical spine inner fixing device of preceding road implantation |
| CN109646103B (en) * | 2019-01-22 | 2021-10-29 | 李涛 | Upper cervical vertebra internal fixation device implanted in anterior approach |
| CN109674522A (en) * | 2019-02-22 | 2019-04-26 | 苏州吉美瑞医疗器械股份有限公司 | A kind of anterior cervical vertebrae fixed system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG CANWELL MEDICAL CO., LTD. Free format text: FORMER NAME: KEHUI MEDICAL EQUIPMENT CO., LTD., ZHEJIANG |
|
| CP03 | Change of name, title or address |
Address after: Wucheng District of Zhejiang city in Jinhua Province, Jinhua City, 321016 South Street No. 466 Xian Patentee after: Zhejiang Ke Hui Medical Treatment Equipment Co., Ltd Address before: 321016 Zhejiang city in Jinhua Province, Xinhua Street No. 466 Patentee before: Zhejiang Canwell Medical Co., Ltd. |