CN205031354U - Way steel sheet elasticity locking device before cervical vertebra - Google Patents
Way steel sheet elasticity locking device before cervical vertebra Download PDFInfo
- Publication number
- CN205031354U CN205031354U CN201520757913.8U CN201520757913U CN205031354U CN 205031354 U CN205031354 U CN 205031354U CN 201520757913 U CN201520757913 U CN 201520757913U CN 205031354 U CN205031354 U CN 205031354U
- Authority
- CN
- China
- Prior art keywords
- snap ring
- screw
- rivet
- steel sheet
- plate fixation
- 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.)
- Active
Links
Abstract
The utility model discloses a way steel sheet elasticity locking device before cervical vertebra, way steel sheet, retaining snap ring and rivet before the cervical vertebra, being equipped with two on the steel sheet of way before the cervical vertebra and being listed as the screw hole, the screw assembles in the steel sheet screw hole, installs retaining snap ring in the middle of the screw hole, and on the steel sheet of way, retaining snap ring has towards the open slot in the outside retaining snap ring adoption fix with rivet before the cervical vertebra, and the shrink of fashionable retaining snap ring is twisted to the screw, twists income back retaining snap ring automatic re -setting and shelters from in the upper end of both sides screw, prevents withdrawing from of screw, the utility model has the characteristics of low notch, prevent moving back that locking, width are narrow, the oppression blood vessel less, can effectively prevent the operation accomplish after the production of hidden danger such as the snap ring drops in the withdrawing from of fine motion, screw, steel sheet of screw, simple structure, auto -lock are reliable, retaining snap ring non -deformable became invalid, clinical operation is very simple and convenient, the screw locking device can be accelerated the operation and put nail, quick locking screw, and the doctor is easy and simple to handle, can reduce operation flow, time.
Description
Technical field
This utility model relates to technical field of medical instruments, specifically a kind of anterior plate fixation elastic 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 cervical spine locking steel plate needs to meet low incisura, anti-back locks, width is narrow, vascular compression is few etc. meets the principle of internal fixation treatment, after having performed the operation, in patient's daily life, the motion of head is inevitable and frequently, because cervical steel plate is directly installed on cervical vertebra by screw, along with this screw of activity of cervical vertebra inevitably exists fine motion, the situation getting loose and exit, What is more, and screw directly spues from patient oral cavity, serious impact can be brought to patient, for this situation, people adopt and rivet a locking plate on steel plates, this locking plate is movable design, under the different anglecs of rotation can part gland screw nut or expose nut completely, still the situation of pine nail is likely there is after locking plate multiple rotary, nut is exposed completely, causes the risk of screw pine nail backed off after random, therefore, need to improve prior art, to solve the problem.
Utility model content
The purpose of this utility model is to provide the anterior plate fixation elastic locking device of the hidden danger such as snap ring drops in a kind of fine motion of the rear screw that can effectively prevent from having performed the operation, the exiting of screw, steel plate, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of anterior plate fixation elastic locking device, comprise anterior plate fixation, snap ring and rivet, snap ring is fixed on anterior plate fixation by described rivet, described anterior plate fixation has screw hole, and screw hole is used for mounting screw, and described screw hole is set to two row, the centre of two row screw holes is provided with counterbore and rivet hole, counterbore is for placing snap ring, and the bottom of rivet hole is the conical surface, and rivet realizes fixing of snap ring and anterior plate fixation through rivet hole; Described snap ring is provided with cylindrical and inner circle, cylindrical and inner circle are off-centre operation, and snap ring is provided with the open slot making it have compression and reset function, and open slot is towards arranged outside, the opposite side of snap ring is provided with the conical surface, and rivet is fixed on the conical surface and sentences the rotation preventing snap ring; The head of described rivet is tapered, and taper is mated with the conical surface of snap ring, and inside has the hollow structure as temporary fixed hole, so that by tight for rivet riveted on anterior plate fixation 1.
As further program of the utility model: described snap ring adopts memory alloy spring to make.
As this utility model further scheme: when described screw is screwed into, snap ring shrinks, and is screwed into rear snap ring and automatically resets.
Compared with prior art, the beneficial effects of the utility model are: this utility model structure is simple, reasonable in design, snap ring adopts special memory alloy spring material to make, repeatedly compression can also recover initial condition after using automatically, adopt the elastic principle of snap ring, screw is screwed into rear snap ring and automatically springs open, block screw and form self-locking, self-locking is reliable, effectively can be prevented from having performed the operation the fine motion of rear screw, exiting of screw, in steel plate, snap ring such as to drop at the generation of hidden danger, solve the locking of existing anterior cervical plate system unreliable, there is the problem of potential safety hazard etc., this utility model not only meets cervical spine locking steel plate will low incisura, anti-back locks, width is narrow, vascular compression is few etc. meets internal fixation treatment principle, 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, and again because anterior cervical plate system structure is simple, self-locking is reliable, snap ring is deformation failure not easily, and clinical manipulation is very easy, in addition, this utility model can be accelerated operation and put nail, quick locking screw, and doctor is easy and simple to handle, can reduce surgical procedure, time.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model.
Fig. 2 is the front view of anterior plate fixation in this utility model.
Fig. 3 is the structural representation of this utility model Elastic snap ring.
Fig. 4 is the structural representation of rivet in this utility model.
Wherein, 1-anterior plate fixation, 2-snap ring, 3-rivet, 4-screw, 5-screw hole, 6-counterbore, 7-rivet hole, 8-open slot, the 9-conical surface, 10-taper, 11-hollow structure, 12-rivet hole.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Refer to Fig. 1-4, a kind of anterior plate fixation elastic locking device, comprise anterior plate fixation 1, snap ring 2 and rivet 3, snap ring 2 is fixed on anterior plate fixation 1 by described rivet 3, described anterior plate fixation 1 has screw hole 5, screw hole 5 is for mounting screw 4, described screw hole 5 is set to two row, the centre of two row screw holes 5 is provided with counterbore 6 and rivet hole 7, counterbore 6 is for placing snap ring 2, the bottom of rivet hole 7 is the conical surface, and rivet 3 realizes the fixing of snap ring 2 and anterior plate fixation 1 through rivet hole 7; Described snap ring 2 is provided with cylindrical and inner circle, cylindrical and inner circle are off-centre operation, snap ring 2 is provided with the open slot 8 making it have compression and reset function, open slot 8 is towards arranged outside, the opposite side of snap ring 2 is provided with the conical surface 9, and rivet 3 is fixed on the conical surface 9 and sentences the rotation preventing snap ring 2; The head tapered 10 of described rivet 3, taper 10 is mated with the conical surface 9 of snap ring 2, and inside has the hollow structure 11 as temporary fixed hole, so that by tight for rivet 3 riveted on anterior plate fixation 1.
Described snap ring 2 adopts memory alloy spring to make.
When described screw 4 is screwed into, snap ring 2 shrinks, and is screwed into rear snap ring 2 and automatically resets.
Operation principle of the present utility model is: snap ring 2 is fixed on anterior plate fixation 1 by rivet 3, during loading screw 4, snap ring 2 is inwardly compressed, after screw 4 is in place, snap ring 2 recovers initial condition, and snap ring 2 blocks screw 4 and can not exit.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (3)
1. an anterior plate fixation elastic locking device, comprise anterior plate fixation (1), snap ring (2) and rivet (3), it is characterized in that: snap ring (2) is fixed on anterior plate fixation (1) by described rivet (3), described anterior plate fixation (1) has screw hole (5), screw hole (5) is for mounting screw (4), described screw hole (5) is set to two row, the centre of two row screw holes (5) is provided with counterbore (6) and rivet hole (7), counterbore (6) is for placing snap ring (2), the bottom of rivet hole (7) is the conical surface, rivet (3) realizes the fixing of snap ring (2) and anterior plate fixation (1) through rivet hole (7), described snap ring (2) is provided with cylindrical and inner circle, cylindrical and inner circle are off-centre operation, snap ring (2) is provided with the open slot (8) making it have compression and reset function, open slot (8) is towards arranged outside, the opposite side of snap ring (2) is provided with the conical surface (9), and rivet (3) is fixed on the conical surface (9) and sentences the rotation preventing snap ring (2), the head of described rivet (3) is tapered (10), taper (10) is mated with the conical surface (9) of snap ring (2), and inside has the hollow structure (11) as temporary fixed hole, so that by tight for rivet (3) riveted on anterior plate fixation (1).
2. anterior plate fixation elastic locking device according to claim 1, is characterized in that, described snap ring (2) adopts memory alloy spring to make.
3. anterior plate fixation elastic locking device according to claim 1, is characterized in that, when described screw (4) is screwed into, snap ring (2) shrinks, and is screwed into rear snap ring (2) and automatically resets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757913.8U CN205031354U (en) | 2015-09-28 | 2015-09-28 | Way steel sheet elasticity locking device before cervical vertebra |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520757913.8U CN205031354U (en) | 2015-09-28 | 2015-09-28 | Way steel sheet elasticity locking device before cervical vertebra |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205031354U true CN205031354U (en) | 2016-02-17 |
Family
ID=55290293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520757913.8U Active CN205031354U (en) | 2015-09-28 | 2015-09-28 | Way steel sheet elasticity locking device before cervical vertebra |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205031354U (en) |
Cited By (5)
| 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 |
| CN109662768A (en) * | 2019-02-27 | 2019-04-23 | 中国人民解放军北部战区总医院 | Nail-plate fixed systems eccentric are placed in a kind of anterior cervical vertebrae C2,3 |
| 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 |
| CN111631844A (en) * | 2020-05-29 | 2020-09-08 | 四川大学华西医院 | Double-skin elastic fixation fusion cage |
| CN113576635A (en) * | 2021-06-16 | 2021-11-02 | 四川维思达医疗器械有限公司 | Anterior cervical fixing structure |
-
2015
- 2015-09-28 CN CN201520757913.8U patent/CN205031354U/en active Active
Cited By (7)
| 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 |
| 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 |
| CN109662768A (en) * | 2019-02-27 | 2019-04-23 | 中国人民解放军北部战区总医院 | Nail-plate fixed systems eccentric are placed in a kind of anterior cervical vertebrae C2,3 |
| CN109662768B (en) * | 2019-02-27 | 2023-08-22 | 中国人民解放军北部战区总医院 | Anterior cervical C2, 3 eccentric placement nail plate fixing system |
| CN111631844A (en) * | 2020-05-29 | 2020-09-08 | 四川大学华西医院 | Double-skin elastic fixation fusion cage |
| CN111631844B (en) * | 2020-05-29 | 2022-12-23 | 四川大学华西医院 | Double-skin elastic fixation fusion cage |
| CN113576635A (en) * | 2021-06-16 | 2021-11-02 | 四川维思达医疗器械有限公司 | Anterior cervical fixing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205031354U (en) | Way steel sheet elasticity locking device before cervical vertebra | |
| US8083798B2 (en) | Non-circular stabilization sphere and method | |
| CN103610523A (en) | Minimally invasive lateral approach interbody fusion device | |
| CN104287819B (en) | The pedicle screw assemblies that a kind of Medical flexible double thread, resistance to plucking go out | |
| US9848925B2 (en) | Plate/screw locking mechanism devices, systems and methods | |
| CN203662946U (en) | Minimally invasive lateral approach interbody fusion cage | |
| CN113262085A (en) | Anti-retreat and expandable intervertebral fusion device | |
| CN109010960A (en) | Cranium struts drainage device after a kind of neurosurgery | |
| CN108969163A (en) | A kind of zero incisura fusion device device | |
| CN105434021B (en) | A kind of pedicle screw | |
| CN204169917U (en) | The special pedicle nail of PLIF | |
| CN208659431U (en) | A kind of centrum nail dilator | |
| CN203815664U (en) | Inelastic and elastic combined intervertebral support device | |
| CN215960471U (en) | Self-stabilizing fusion cage capable of being unfolded in front of neck | |
| CN205126384U (en) | Way board before auto -lock integral type cervical vertebra | |
| CN201295280Y (en) | Anterior locking cervical plate system | |
| CN204169918U (en) | The pedicle screw assemblies that the two screw thread of a kind of Medical flexible, resistance to plucking go out | |
| CN211460689U (en) | Distracting intervertebral disc fusion device | |
| CN103919633A (en) | Combined type spine minimally invasive fusion device | |
| CN210727945U (en) | Novel self-stabilizing bone grafting-free minimally invasive fusion cage for lumbar vertebrae | |
| CN103622767A (en) | Lumbar fusion cage for intervertebral foramen approach | |
| KR102260687B1 (en) | Spine fixing device for preventing screw break away | |
| CN110893130A (en) | Intervertebral fusion cage | |
| CN208625944U (en) | A kind of removable cervical traction apparatus | |
| CN204106172U (en) | A kind of cervical vertebra locking fusion device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |