CN204839703U - Fixer is merged in qian lu extensive region dentata lateral mass clearance - Google Patents
Fixer is merged in qian lu extensive region dentata lateral mass clearance Download PDFInfo
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- CN204839703U CN204839703U CN201520527367.9U CN201520527367U CN204839703U CN 204839703 U CN204839703 U CN 204839703U CN 201520527367 U CN201520527367 U CN 201520527367U CN 204839703 U CN204839703 U CN 204839703U
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- fusion device
- screw
- lateral mass
- thread
- atlas
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- 230000004927 fusion Effects 0.000 claims description 57
- 210000000988 bone and bone Anatomy 0.000 claims description 13
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 8
- 229920002530 polyetherether ketone Polymers 0.000 claims description 8
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 claims description 3
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001356 surgical procedure Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 208000015181 infectious disease Diseases 0.000 abstract description 3
- 206010028980 Neoplasm Diseases 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 206010052428 Wound Diseases 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 239000007943 implant Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 210000003800 pharynx Anatomy 0.000 description 2
- 210000000278 spinal cord Anatomy 0.000 description 2
- 210000002385 vertebral artery Anatomy 0.000 description 2
- 206010018852 Haematoma Diseases 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 201000009906 Meningitis Diseases 0.000 description 1
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000001032 spinal nerve Anatomy 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000029663 wound healing Effects 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model relates to the technical field of medical equipment, a fixer is merged in qian lu extensive region dentata lateral mass clearance for the spinal surgery. At present, extensive region dentata dislocation chang youyu goes up deformity, traumatism, regression, the tumour of cervical vertebra and the infection caused, great majority need surgical treatment of, and the wound is big. The utility model discloses a fixer is merged in qian lu extensive region dentata lateral mass clearance for the spinal surgery is developed to the purpose. The structure comprises locking screw (1) and integration ware (2), and the nail body the place ahead of locking screw (1) mostly is coarse -pitch thread (3), and the rear portion of the nail body is thin screw thread (4), with integration ware inner wall of thread (5) phase -match. The advantage is that to fuse ware design low for preceding high back, can the dislocation goes on reseing to the extensive region dentata effectively maintain, screw fixed operations is simple, intensity is high, have fixed firm, easy operation, the wound is little, has improved the curative effect.
Description
Technical field
This utility model relates to technical field of medical instruments, is that holder is merged in a kind of spinal surgery atlas and axis lateral mass gap, front road.
Background technology
Current: atlas and axis portion complex structure, there is the visibly different anatomical features with Cervical vertebra.Atlas has maximum mobility in cervical vertebra, therefore, is also the part that stability is the most easily damaged.Atlantoaxial dislocation is often due to the deformity of upper cervical spine, wound, regression, tumor and caused by infecting, and great majority need operative treatment.Atlantoaxial dislocation is divided into not recoverability, irreducible and recoverability, to irreducible and not recoverability current routine of dislocating need to carry out per os Anterior release, then row Posterior fixation bone-graft fusion.Although the method determined curative effect, need front and back to perform the operation, wound is large, and rear nail-stick system fixing operation has a big risk simultaneously, has damage vertebral artery and spinoneural possibility, needs to change position simultaneously, have the danger that spinal nerves damages again in art.
What therefore the direct oral cavity of some scholars research both at home and abroad pharynx rear wall approach carried out dislocating loosens and merges fixing.The atlas and axis operation of direct oral cavity pharynx rear wall approach is described in 1917 by Kanavel the earliest, and this approach is the nearest approach from atlas vertebral body front portion, is once widely used in the operative treatment at this position.But appear apparatus because this operative approach needs are special, the visual field is little, operating difficulties, and operational danger is large, and infection rate after abortion operation is high, is once once seldom adopted by doctor.But due to otch approach position next-door neighbour's atlas and axis focus, along with the development of the related surgical assistive devices such as various micro-Wicresoft and light source, the improvement of operative approach, clinical manipulation improve constantly and the significantly raising of perioprative management, this approach is familiar with again and is paid attention in recent years, to articulatio atlantoepistrophica seriously dislocate can not reduction and compression of spinal cord serious symptom time, per os decompression can obtain directly definite clinical effectiveness, Chinese scholars is also inquired into per os bone grafting internal fixtion, and obtains good effect.Harms proposes front road per os steel plate the earliest, many scholars dissect the aspect such as feasibility, biomechanics with regard to it and inquire into afterwards, but Harms steel plate is not locking steel plate, needs Bicortical-screw to fix during use, in order to avoid there is screw loosening, increase the possibility of Spinal Cord nerve simultaneously.Kanzdiora etc. propose the concept of front road atlas and axis locking steel plate afterwards.Domestic, there is scholar also to develop per os reset plate, and obtain good result in clinical practice.The advantage of the method once can complete decompression of loosening, reset and fix, and reaches at once stable, need not row posterior approach.But all steel plates are all be fixed on lateral mass of atlas and dentata vertebral body front, steel plate is comparatively large, and the volume occupied is large, and incisura is high, need extensively to peel off to appear just can be fixed, easily occur that mucosa hematoma, wound healing difficulty, infection and meningitis and internal fixtion expose the potential complication such as loosening.The bone grafting of these operations is all implanted in anterior arch and body of axis front simultaneously, and because implant bed is little, the success rate of fusion does not have large Case report at present.Row atlas and axis lateral mass gap bone grafting, its implant bed is large, contacts wide, fusion rate of bone graft is high, but all carries out in posterior approach at present, but there are very large venous plexus and vertebral artery in rear, easily occur massive hemorrhage when appearing in art and operate, even threat to life, rear surgery location is dark, appear difficulty, cannot carry out the process of decorticating of implant bed, bone grafting amount is very limited, though current this method has report, but do not have the report of a large amount of ratio, determined curative effect needs to be investigated.
Summary of the invention
The purpose of this utility model is to provide a kind of fixed, that bone grafting is definite, wound is little, simple to operate atlas and axis lateral mass gap, front road and merges holder.
The technical solution of the utility model: for the ease of understanding, referring to accompanying drawing and label declaration thereof.
Holder is merged in a kind of atlas and axis lateral mass gap, front road, and it is characterized in that being made up of lock screw 1 and fusion device 2, the rivet nut front major part of lock screw 1 is coarse-pitch thread 3, and be self-taped type, the rear portion of rivet nut is fine thread 4, matches with fusion device inner thread 5; Head of a nail rear center is interior hexagonal configuration, and the interior hexagonal spiral shell cutter of available coupling carries out screwing or unclamp operation, and the length of screw needs to determine according in image and art; Fusion device 2 is the ellipsoid like structure of hollow, low after high before the outward appearance of position, side, up and down with certain radian, is convenient to match with atlas and axis Lateral mass joint, increases contact area; Fusion device hollow space ovalize, can insert autologous bone or allograph bone; Being convenient to insert in art with the forward part 6 of the fusion device 2 effectively preventing slippage is polyether-ether-ketone PEEK material, and edge is mellow and full, and top and bottom are with dentation ripple 7; The rear section 8 of fusion device is titanium alloy material, enhance the stability of fusion device, its rear wall there is the screw thread 5 that two oblique, one is go up backward from front lower, another be from front upper backward under, two screw threads 5 match with the fine thread 4 at the rivet nut rear portion of lock screw and lock, and avoid screw to exit backward and fusion device is forwards deviate from; Two pieces of lock screw 1 are screwed in fusion device 2, namely become atlas and axis lateral mass gap, front road and merge holder.
From another one angle: atlas and axis lateral mass gap, this utility model front road is merged holder and is made up of two pieces of lock screw and fusion device.The rivet nut front major part of lock screw is coarse-pitch thread, and be self-taped type, the rear portion of rivet nut is fine thread, matches with fusion device inner thread.Head of a nail rear center is interior hexagonal configuration, and the interior hexagonal spiral shell cutter of available coupling carries out screwing or unclamp operation.Fusion device is the rectangle structure of hollow, low after high before the outward appearance of position, side, up and down with certain radian.Fusion device hollow space ovalize.Fusion device is divided into front and back two parts, and front portion is divided into polyether-ether-ketone PEEK) material, its flat shape is " U " shape, and comprise antetheca and the outboard sidewalls of fusion device, edge is mellow and full, and top and bottom are with dentation ripple.The rear portion of fusion device is divided into titanium alloy material matter, and it consists of the rear wall of fusion device, is entire rectangular structure, rear wall there is the screw thread that two oblique, one is go up backward from front lower, another be from front upper backward under, the fine thread at the rivet nut rear portion of two screw threads and lock screw matches.The rear section of fusion device and forward part form joint, can have the activity of upper and lower about 5 degree.Two lock screw are screwed in fusion device, namely become atlas and axis lateral mass gap, this utility model front road and merge holder.During operation, that handles bilateral atlas and axis lateral mass gap well goes chondrify, after suitable size is measured in fusion device die trial, implants in lateral mass gap by the fusion device being filled with autologous bone or artificial bone, after fusion device rear wall screw hole opening, be screwed into two pieces of lock screw be fixed, namely reach and merge fixing object.
This utility model advantage and effect are: structure is simple, integrate fusion device and steel plate, volume is little, is not projected into the outside of bone, reach zero incisura, just reached when row dislocation is loosened in art and appeared, without the need to extensive stripping, fusion device is designed to arc up and down, can with atlas and axis lateral mass Perfect Matchings, waved surface adds frictional force, reduces fusion device displacement, improves stability.Low after high before fusion device, the reset of dislocating can be carried out further and position maintains.The oblique implantation locking of lock screw, greatly improves fixing stability, improves the success rate of bone-graft fusion.The method otch completes to be loosened and merges fixing, and therefore have fixed, simple to operate, wound is little, improves curative effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of lock screw of the present utility model.Fig. 2 is the structural representation above of fusion device of the present utility model.Fig. 3 is the front bevel structural representation of fusion device of the present utility model.Fig. 4 is the side bit architecture schematic diagram of lock screw of the present utility model and fusion device combination.
Number in the figure illustrates: 1, screw, 2, fusion device, 3, coarse-pitch thread, 4, fine thread, 5, inner thread, 6, fusion device forward part, 7, the top and bottom of fusion device with dentation ripple, 8, the rear section of fusion device.
Detailed description of the invention
Now in conjunction with the accompanying drawings and embodiments, this utility model is described in detail.Atlas and axis lateral mass gap, front road of the present utility model is merged holder and is made up of two pieces of lock screw 1 and fusion device 2.The rivet nut front major part of lock screw 1 is coarse-pitch thread 3, and be self-taped type, the rear portion of rivet nut is fine thread 4, matches with fusion device inner thread 5.Fusion device 2 is the ellipsoid like structure of hollow, low after high before the outward appearance of position, side, up and down with certain radian.Fusion device is divided into front and back two parts, and forward part 6 is polyether-ether-ketone (PEEK) material, and its flat shape is " U " shape, comprises antetheca and the outboard sidewalls of fusion device.The rear section 8 of fusion device is titanium alloy material, and it consists of the rear wall of fusion device, is entire rectangular structure, rear wall has the screw thread 5 that two oblique.Embodiment 1. this utility model is made up of lock screw and fusion device, the long 18mm of lock screw rivet nut, external diameter 2.5mm, and fusion device screw internal diameter 2.5mm mates with it.The long 18.0mm of fusion device outer rim, wide 14.0mm, the long 8mm in fusion device inner edge, wide 6mm, rear height 8.0mm, anterior height 6.0mm.
This utility model can make different specifications and models as required.
Claims (1)
1. holder is merged in an atlas and axis lateral mass gap, Zhong Qian road, it is characterized in that: be made up of lock screw (1) and fusion device (2), the rivet nut front major part of lock screw (1) is coarse-pitch thread (3), for self-taped type, the rear portion of rivet nut is fine thread (4), matches with fusion device inner thread (5); Head of a nail rear center is interior hexagonal configuration, and the interior hexagonal spiral shell cutter of available coupling carries out screwing or unclamp operation, and the length of screw needs to determine according in image and art; The ellipsoid like structure that fusion device (2) is hollow, low after high before the outward appearance of position, side, up and down with certain radian, be convenient to match with atlas and axis Lateral mass joint, increase contact area; Fusion device hollow space ovalize, can insert autologous bone or allograph bone; Being convenient to insert in art with the forward part (6) of the fusion device (2) effectively preventing slippage is polyether-ether-ketone PEEK material, and edge is mellow and full, and top and bottom are with dentation ripple (7); The rear section (8) of fusion device is titanium alloy material, enhance the stability of fusion device, its rear wall there is the screw thread (5) that two oblique, one is go up backward from front lower, another be from front upper backward under, two screw threads (5) match with the fine thread (4) at the rivet nut rear portion of lock screw and lock, and avoid screw to exit backward and fusion device is forwards deviate from; Two pieces of lock screw (1) are screwed in fusion device (2), namely become atlas and axis lateral mass gap, front road and merge holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527367.9U CN204839703U (en) | 2015-07-14 | 2015-07-14 | Fixer is merged in qian lu extensive region dentata lateral mass clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520527367.9U CN204839703U (en) | 2015-07-14 | 2015-07-14 | Fixer is merged in qian lu extensive region dentata lateral mass clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204839703U true CN204839703U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520527367.9U Expired - Fee Related CN204839703U (en) | 2015-07-14 | 2015-07-14 | Fixer is merged in qian lu extensive region dentata lateral mass clearance |
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| Country | Link |
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| CN (1) | CN204839703U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105963007A (en) * | 2016-07-08 | 2016-09-28 | 湖南百佳生物工程有限公司 | Minimally invasive pedicle screw system |
| CN106073951A (en) * | 2016-05-24 | 2016-11-09 | 北京市春立正达医疗器械股份有限公司 | A kind of 3D prints the low incisura fusion device of metal bone trabecula cervical vertebra |
| CN106551733A (en) * | 2016-11-08 | 2017-04-05 | 中国人民解放军第七五医院 | A kind of fixed lumbar intervertebral fusion fixing device of titanium nail |
| CN110755182A (en) * | 2019-11-21 | 2020-02-07 | 中国人民解放军总医院 | A kind of atlantoaxial lateral mass joint fusion device |
-
2015
- 2015-07-14 CN CN201520527367.9U patent/CN204839703U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106073951A (en) * | 2016-05-24 | 2016-11-09 | 北京市春立正达医疗器械股份有限公司 | A kind of 3D prints the low incisura fusion device of metal bone trabecula cervical vertebra |
| CN105963007A (en) * | 2016-07-08 | 2016-09-28 | 湖南百佳生物工程有限公司 | Minimally invasive pedicle screw system |
| CN106551733A (en) * | 2016-11-08 | 2017-04-05 | 中国人民解放军第七五医院 | A kind of fixed lumbar intervertebral fusion fixing device of titanium nail |
| CN110755182A (en) * | 2019-11-21 | 2020-02-07 | 中国人民解放军总医院 | A kind of atlantoaxial lateral mass joint fusion device |
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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: 20151209 Termination date: 20200714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |