CN100369589C - Means for preventing fixed bone screw loosening for cervical vertebrae front steel plate system - Google Patents
Means for preventing fixed bone screw loosening for cervical vertebrae front steel plate system Download PDFInfo
- Publication number
- CN100369589C CN100369589C CNB2005100951845A CN200510095184A CN100369589C CN 100369589 C CN100369589 C CN 100369589C CN B2005100951845 A CNB2005100951845 A CN B2005100951845A CN 200510095184 A CN200510095184 A CN 200510095184A CN 100369589 C CN100369589 C CN 100369589C
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- Prior art keywords
- screw
- pressing plate
- bayonet socket
- backing
- bayonet
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 title abstract description 7
- 239000010959 steel Substances 0.000 title abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 241000587161 Gomphocarpus Species 0.000 claims description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010019909 Hernia Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000009278 visceral effect Effects 0.000 description 1
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Abstract
The present invention relates to an anti-retreat device for fixing bone screws of cervical vertebrae front steel plate systems, which belongs to cervical vertebrae front steel plate internal fixation surgical instruments of medical clinical spine surgery. The device is composed of an anti-loosing screw and a bayonet pressing plate, wherein a cambered groove is arranged below the head of the anti-loosing screw; a short cone is arranged below the groove; the fixing hole of the anti-loosing screw, a slide groove and a narrow and long elastic groove are arranged in the middle of the bayonet pressing plate; the anti-loosing screw is arranged in the fixing hole of the anti-loosing screw on the bayonet pressing plate. The outer circle of the largest part of the short cone arranged below the head of the anti-loosing screw is larger than the bayonet hole of the bayonet pressing plate. The bayonet hole is arranged in the position of the fixing hole of the anti-loosing screw of the bayonet pressing plate.
Description
Technical field
What the present invention relates to is the anti-unloading device of a kind of anterior plate fixation system's fixed bone screw, belongs to clinical medicine spinal surgery anterior plate fixation inner fixation surgical instrument.
Background technology
Anterior plate fixation internal fixation technology treatment intervertebral disk hernia, wound, tumor has been widely used in clinical.Because human spine's special physiological structure and activity frequency, very high to the design and the manufacturing requirement of anterior plate fixation system, not only volume is little, the fatigue resistance height, and must guarantee tight security.Particularly the fixed bone screw that uses in this system does not cause the loosening of screw easily and withdraws from steel plate if there is additional anti-unloading device, causes the internal fixation failure.Gently then cause the patient to perform the operation once more, heavy then can pierce through the trachea threat to life.The like product of present clinical use although major part all has the anti-unloading device of the different fixed bone screw of various designs, but still have certain limitation, even also there is the technological deficiency that gets loose in anti-unloading device itself.
Summary of the invention
The present invention seeks to provides a kind of anterior plate fixation system's fixed bone screw anti-unloading device at above-mentioned weak point, adopt backing-up screw, bayonet socket pressing plate to constitute the anti-unloading device of fixed bone screw, solve the loosening easily severe complication problems such as internal fixation failure and visceral injury that cause of present anterior plate fixation system's fixed bone screw.
The anti-unloading device of anterior plate fixation system fixed bone screw is to take following scheme to realize: anterior plate fixation system fixed bone screw anti-back apparatus structure is made up of backing-up screw, bayonet socket pressing plate, the backing-up screw lower head has an arc groove, be provided with short cone below groove, short cone maximum cylindrical is greater than the bayonet socket hole of bayonet socket pressing plate.Design has multiple size to bayonet socket pressing plate length according to the anterior plate fixation length specification, and the wideest part in both sides can be pushed down the fixed bone nail head of anterior plate fixation, and the centre is provided with backing-up screw fixing hole, chute and long narrow elastic groove.
Be provided with a bayonet socket hole at its backing-up screw fixing hole place.Because the existence of elastic groove, the bayonet socket hole has appropriate spring function.Backing-up screw is installed on the bayonet socket pressing plate in the backing-up screw fixing hole.
Operation principle: backing-up screw, bayonet socket pressing plate and anterior plate fixation assemble in factory in advance.Backing-up screw is put into the screw that screws in anterior plate fixation behind the bayonet socket pressing plate chute.But this moment, backing-up screw was also not exclusively tightened.The short cone on the top of backing-up screw and arc groove do not enter the bayonet socket hole of bayonet socket pressing plate, and the bayonet socket pressing plate can move up and down along chute.
During operation the bayonet socket pressing plate is moved toward the below along chute, abdicate fixed bone screw and screw in the space.
Fixed bone screw is screwed in spinal vertebral one by one from the anterior plate fixation hole, anterior plate fixation firmly is connected with vertebral body.Make its backing-up screw fixed hole position in the backing-up screw place with pushing away on the bayonet socket pressing plate then, the widest part of bayonet socket pressing plate is pushed down each fixed bone nail head just, tighten each backing-up screw this moment again, because the long narrow elastic groove in bayonet socket place has certain elasticity, the short cone and the arc groove of backing-up screw are snapped in the pressing plate bayonet socket, form snap close.At this moment keep between bayonet socket pressing plate and anterior plate fixation fitting tightly, both finished anti-back function, and backing-up screw can not withdraw from the bayonet socket pressing plate each fixed bone screw.Really realized anti-back purpose to each screw.
Part corrective surgery healing back is as if needing to take out the anterior plate fixation system, and the powerful turn backing-up screw counterclockwise of available dedicated bottle opener utilizes the axial force of screw thread rotation generation and the spring function in bayonet socket hole.The short cone that makes backing-up screw withdraws from from the bayonet socket of bayonet socket pressing plate, and reverse procedure is taken out the anterior plate fixation system when placing with operation again.
The anti-unloading device of anterior plate fixation system fixed bone screw is reasonable in design, novel structure, uniqueness, production and processing is simple, use with anterior plate fixation system support, clinical manipulation is very convenient, a plurality of fixed bone screw anti-back effects are once finished, can be shortened operating time greatly, reduce patient's misery, reduce patient's amount of bleeding.
Description of drawings
The invention will be further described below with reference to accompanying drawing.
Fig. 1 is structure of the present invention and user mode sketch map.
Fig. 2 is structure of the present invention and user mode left view.
Fig. 3 is structure of the present invention and user mode A-A cutaway view.
Fig. 4 is backing-up screw of the present invention and bayonet socket pressing plate and anterior plate fixation assembling sketch map.
Fig. 5 is a backing-up screw structural representation of the present invention.
Fig. 6 is a bayonet socket pressure plate structure front view of the present invention.
Fig. 7 is a bayonet socket pressure plate structure left view of the present invention.
Fig. 8 is a bayonet socket pressure plate structure rearview of the present invention.
Fig. 9 is a bayonet socket pressure plate structure A-A cutaway view of the present invention.
The specific embodiment
With reference to accompanying drawing 1～9, the anti-unloading device of anterior plate fixation system fixed bone screw is made up of backing-up screw, bayonet socket pressing plate.(seeing accompanying drawing 1～4) used in anti-unloading device of anterior plate fixation system fixed bone screw and anterior plate fixation system support assembling:
Fixed bone screw 2 screws in vertebral body from the hole of anterior plate fixation 1, anterior plate fixation 1 is fixed on the suitable spinal vertebral.After fixed bone screw 2 screwed in steel plate fully, head was imbedded in the steel plate hole.
Backing-up screw 3, bayonet socket pressing plate 4 are key core technology of the present invention, and both form the anti-unloading device of fixed bone screw jointly.Circled is that backing-up screw 3 and bayonet socket pressing plate 4 are tightened the snap close that the back forms with anterior plate fixation 1 assembling in the accompanying drawing 4.Backing-up screw (seeing accompanying drawing 5) design has an arc groove 3-1 in its lower head.Be designed to short cone 3-2 below groove, short cone 3-2 maximum cylindrical is greater than the bayonet socket hole of bayonet socket pressing plate.Design has multiple size to bayonet socket pressing plate 4 (seeing accompanying drawing 6-9) length according to anterior plate fixation 1 length specification.The wideest part 4-2 in both sides can push down fixed bone screw 2 heads.Middle design has backing-up screw fixing hole 4-3, chute 4-1 and long narrow elastic groove 4-4.Design has a bayonet socket hole 4-5 at its backing-up screw fixing hole 4-3 place.Because the existence of elastic groove 4-4, bayonet socket hole 4-5 has appropriate spring function.Backing-up screw 3 is installed in the backing-up screw fixing hole 4-3 on the bayonet socket pressing plate by the chute 4-1 on the bayonet socket pressing plate during the anti-unloading device assembling of fixed bone screw.
Claims (1)
1. the anti-unloading device of an anterior plate fixation system fixed bone screw is characterized in that structure is made up of backing-up screw, bayonet socket pressing plate; The backing-up screw lower head has an arc groove, is provided with short cone below groove, is provided with backing-up screw fixing hole, chute and long narrow elastic groove in the middle of the bayonet socket pressing plate, and backing-up screw is installed on the bayonet socket pressing plate in the backing-up screw fixing hole; The bayonet socket pressing plate is provided with a bayonet socket hole at its backing-up screw fixing hole place, and the short cone maximum cylindrical of backing-up screw is greater than the bayonet socket hole of bayonet socket pressing plate, and the bayonet socket pressing plate is when chute moves, and the wideest part in both sides can be pushed down the fixed bone nail head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100951845A CN100369589C (en) | 2005-11-02 | 2005-11-02 | Means for preventing fixed bone screw loosening for cervical vertebrae front steel plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100951845A CN100369589C (en) | 2005-11-02 | 2005-11-02 | Means for preventing fixed bone screw loosening for cervical vertebrae front steel plate system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1757383A CN1757383A (en) | 2006-04-12 |
| CN100369589C true CN100369589C (en) | 2008-02-20 |
Family
ID=36703054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100951845A Expired - Fee Related CN100369589C (en) | 2005-11-02 | 2005-11-02 | Means for preventing fixed bone screw loosening for cervical vertebrae front steel plate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100369589C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758040A (en) * | 2015-04-30 | 2015-07-08 | 山东威高骨科材料股份有限公司 | Steel plate for anterior cervial internal fixation and guiding device |
| CN108324356A (en) * | 2018-02-07 | 2018-07-27 | 中国人民解放军第二军医大学第二附属医院 | Preceding road cervical vertebra bone cement pedicle screws nail-plate fixed 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 |
| CN110123433A (en) * | 2019-05-15 | 2019-08-16 | 山东新华联合骨科器材股份有限公司 | A kind of internal fixing system for anterior cervical vertebrae |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261910A (en) * | 1992-02-19 | 1993-11-16 | Acromed Corporation | Apparatus for maintaining spinal elements in a desired spatial relationship |
| US5364399A (en) * | 1993-02-05 | 1994-11-15 | Danek Medical, Inc. | Anterior cervical plating system |
| US5578034A (en) * | 1995-06-07 | 1996-11-26 | Danek Medical, Inc. | Apparatus for preventing screw backout in a bone plate fixation system |
| CN1366866A (en) * | 2002-01-17 | 2002-09-04 | 蒋谊康 | Cervical front-side sheet steel bone screw anti-releasing device |
| CN2517397Y (en) * | 2002-01-17 | 2002-10-23 | 蒋谊康 | Front path steel plate bone connection screw fixer for cervical vertebra |
| US6533786B1 (en) * | 1999-10-13 | 2003-03-18 | Sdgi Holdings, Inc. | Anterior cervical plating system |
| CN2850540Y (en) * | 2005-11-02 | 2006-12-27 | 蒋谊康 | Anti-retreat device for fixing bone screw of cervical vertebrae front-way steel plate system |
-
2005
- 2005-11-02 CN CNB2005100951845A patent/CN100369589C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5261910A (en) * | 1992-02-19 | 1993-11-16 | Acromed Corporation | Apparatus for maintaining spinal elements in a desired spatial relationship |
| US5364399A (en) * | 1993-02-05 | 1994-11-15 | Danek Medical, Inc. | Anterior cervical plating system |
| US5578034A (en) * | 1995-06-07 | 1996-11-26 | Danek Medical, Inc. | Apparatus for preventing screw backout in a bone plate fixation system |
| US6533786B1 (en) * | 1999-10-13 | 2003-03-18 | Sdgi Holdings, Inc. | Anterior cervical plating system |
| CN1366866A (en) * | 2002-01-17 | 2002-09-04 | 蒋谊康 | Cervical front-side sheet steel bone screw anti-releasing device |
| CN2517397Y (en) * | 2002-01-17 | 2002-10-23 | 蒋谊康 | Front path steel plate bone connection screw fixer for cervical vertebra |
| CN2850540Y (en) * | 2005-11-02 | 2006-12-27 | 蒋谊康 | Anti-retreat device for fixing bone screw of cervical vertebrae front-way steel plate system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1757383A (en) | 2006-04-12 |
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Owner name: CHANGZHOU CITY KANGHUI MEDICAL DEVICE CO., LTD. Free format text: FORMER OWNER: JIANG YIKANG Effective date: 20090605 |
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Effective date of registration: 20090605 Address after: Changzhou Changzhou Kang Hui Medical Instrument Co., Ltd. No. 1-8 Tian Shan Road, Xinbei District, Jiangsu, China Patentee after: Kanghui Medical Innovation Co., Ltd. Address before: Changzhou Changzhou Kang Hui Medical Instrument Co., Ltd. No. 1-8 Tian Shan Road, Xinbei District, Jiangsu, China Patentee before: Jiang Yikang |
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