CN103622733B - Asymmetric type vertebral body expander - Google Patents
Asymmetric type vertebral body expander Download PDFInfo
- Publication number
- CN103622733B CN103622733B CN201310565156.XA CN201310565156A CN103622733B CN 103622733 B CN103622733 B CN 103622733B CN 201310565156 A CN201310565156 A CN 201310565156A CN 103622733 B CN103622733 B CN 103622733B
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- China
- Prior art keywords
- fagging
- core bar
- hinged
- assembly
- rear end
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/885—Tools for expanding or compacting bones or discs or cavities therein
- A61B17/8852—Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc
- A61B17/8858—Tools for expanding or compacting bones or discs or cavities therein capable of being assembled or enlarged, or changing shape, inside the bone or disc laterally or radially expansible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Abstract
The invention discloses and a kind of strut great efforts and stable asymmetric type vertebral body expander, including: on front end is provided with, the core bar of bottom fagging assembly, core bar is set with core bar sleeve pipe, top fagging assembly includes: before jointed shaft before top and top that behind top, jointed shaft is sequentially connected with, in, rear stay plate, bottom fagging assembly includes: before jointed shaft before bottom and bottom that behind bottom, jointed shaft is sequentially connected with, in, rear stay plate, on, before bottom, fagging and core bar are hinged on front jointed shaft, on, bottom rear stay plate is hinged on core bar sleeve pipe, one end of top strut is hinged on behind top on jointed shaft, the other end is hinged on core bar, one end of lowermost strut is hinged on behind bottom on jointed shaft, the other end is hinged on core bar；Top strut is highly different from strutting of lowermost strut；The rear end of core bar connects with the connection assembly in shank housing, connects and is connected to and shank housing threaded engagement handle connecting rod connecting rod on assembly。
Description
Technical field
The present invention relates to medical instruments field, the vertebral body expander used when particularly relating to the treatment of vertebral body orthomorphia。
Background technology
Because of the vertebral body disease that wound or causes for pathological cause, as: vertebral fracture, intervertebral disc of thoracic vertebra regression, thoracic vertebra pseudarthrosis, thoracic vertebra spondylolishesis etc., it usually needs carry out orthopedic operative treatment。During surgical operation, it is necessary to adopt centrum eurynter by the pyramidal support of lesion, be then implanted into bone cement the vertebral body strutted again。And currently used vertebral body expander is a kind of sacculus bone dilator, its operation principle is: by pathology pyramidal support after making sacculus expand by pressurizeing。But currently used balloon vertebral body expander has the disadvantage in that one, characteristic due to sacculus compressed air, during pressurization expansion, sacculus compressed air can be expanded to the position that resistance is little, this position resulting in resistance big struts insufficient height, thus causing that orthopedic effect is undesirable；Two, sacculus is easily punctured by Intrapyramidal sharp GUSUIPIAN, and the price of sacculus is costly, this adds increased the medical burden of patient。
Summary of the invention
The technical issues that need to address of the present invention are: provide and a kind of strut great efforts, can be effectively ensured pyramidal support height and pathology vertebral body can carry out the asymmetric asymmetric type vertebral body expander strutted。
For solving the problems referred to above, the technical solution used in the present invention is: asymmetric type vertebral body expander, including: core bar, core bar is outside equipped with core bar sleeve pipe, the front end of core bar is stretched out from core bar sleeve pipe, core bar front end upper, lower both sides are respectively arranged with top fagging assembly and bottom fagging assembly, top fagging assembly includes: fagging before the top of split mutually successively, fagging in the middle of top, top rear stay plate, in the middle of top before fagging and top between fagging and top rear stay plate respectively through jointed shaft before top and behind top jointed shaft be hinged, bottom fagging assembly includes: fagging before the bottom of split mutually successively, fagging in the middle of bottom, bottom rear stay plate, in the middle of bottom before fagging and bottom between fagging and bottom rear stay plate respectively through jointed shaft before bottom and behind bottom jointed shaft be hinged, the front end of fagging before top, before bottom, the front end of fagging and the front end of core bar are all hinged on front jointed shaft, the rear end of top rear stay plate and bottom rear stay plate is hinged and connected on core bar sleeve pipe respectively, it is respectively arranged with top strut and lowermost strut between fagging and core bar in the middle of fagging and bottom in the middle of top, one end of top strut is hinged and connected to behind top on jointed shaft, the other end of top strut is hinged and connected on core bar, one end of lowermost strut is hinged and connected to behind bottom on jointed shaft, the other end of lowermost strut is hinged and connected on core bar；Before described top, the size for connection of fagging, top rear stay plate and top strut can guarantee that in the middle of the top after strutting, fagging is parallel with core bar, before bottom, the size for connection of fagging, bottom rear stay plate and lowermost strut can guarantee that in the middle of the bottom after opening wide, fagging is parallel with core bar, and fagging and different to the distance of core bar from the middle fagging in bottom in the middle of the top after strutting；The rear end of core bar sleeve pipe is fixedly connected on shank housing, the rear end of core bar stretches in shank housing and is connected with the front end connecting assembly in shank housing, the rear end connecting assembly is connected to handle connecting rod, between handle connecting rod with shank housing, threaded engagement is connected, turning handle connecting rod can promote connection assembly and core bar to move forward or backward, fagging in the middle of top is made to be separated from each other with the middle fagging in bottom or mutually draw close, so that top fagging assembly struts with bottom fagging assembly is upper and lower or is mutually closed。
Further, aforesaid asymmetric type vertebral body expander, wherein, connect the structure of assembly, and the concrete attachment structure connecting assembly and handle connecting rod and core bar includes: interior shaft coupling piece and core bar joint pin, the rear end of interior shaft coupling piece is provided with the rear end installation cavity of collar after oral area band, the front end of interior shaft coupling piece is provided with the front end installation cavity of collar before oral area band, the head of handle connecting rod is provided with projection, handle connecting rod on rear side of projection is provided with draw-in groove, the projection of handle connecting rod stretches in the rear end installation cavity of interior shaft coupling piece, and in the draw-in groove that the rear collar block on interior shaft coupling piece is in handle connecting rod, so that handle connecting rod connecting rod can rotate in the installation cavity of rear end and not be separated with rear end installation cavity；The rear end of core bar is fixedly connected on the front end of core bar joint pin, the rear end step of core bar joint pin is fixedly installed the spring collar with spring card slot, pressing inward against spring collar can make the rear end of core bar joint pin stretch in the front end installation cavity of interior shaft coupling piece together with the rear end of spring collar, spring collar after unclamping outwards recovers to deform so that the tight block of front collar on the installation cavity of front end is in spring card slot, so that the rear end of core bar joint pin is connected with interior shaft coupling piece。
Further, aforesaid asymmetric type vertebral body expander, wherein, the outer wall of interior shaft coupling piece is provided with the fin ring of spacing draw-in groove, spacing draw-in groove active card on fin ring is contained on spacing slide rail, and described spacing slide rail is arranged on the inwall of shank housing along the moving direction of core bar。
Beneficial effects of the present invention: simple in construction, production cost are low, struts great efforts and struts stable；Additionally, due to strutting of upper and lower fagging assembly is highly different, vertebral body expander thus can be made to be applicable to the strutting of pathology vertebral body of more complex region。
Accompanying drawing explanation
Fig. 1 is top fagging assembly in asymmetric type vertebral body expander of the present invention status architecture schematic diagram when being mutually closed with bottom fagging assembly。
Fig. 2 is top fagging assembly in asymmetric type vertebral body expander of the present invention status architecture schematic diagram when being mutually closed with bottom fagging assembly。
Detailed description of the invention
Below in conjunction with accompanying drawing and optimum embodiment, the present invention is described in further detail。
Such as Fig. 1, shown in Fig. 2, asymmetric type vertebral body expander, including: core bar 18, core bar 18 is provided with core bar sleeve pipe 8, the front end of core bar 18 is stretched out from core bar sleeve pipe 8, core bar 18 front end upper, lower both sides are respectively arranged with top fagging assembly 19 and bottom fagging assembly 20, top fagging assembly 19 includes: fagging 10 before the top that split is arranged mutually successively, fagging 9 in the middle of top, top rear stay plate 15, it is hinged respectively through jointed shaft 22 behind jointed shaft before top 21 and top between fagging 10 and top rear stay plate 15 before fagging 9 and top in the middle of top, bottom fagging assembly includes: fagging 11 before the bottom that split is arranged mutually successively, fagging 12 in the middle of bottom, bottom rear stay plate 16, it is hinged respectively through jointed shaft 24 behind jointed shaft before bottom 23 and bottom between fagging 11 and bottom rear stay plate 16 before fagging 12 and bottom in the middle of bottom, the front end of fagging 10 before top, before bottom, the front end of fagging 11 and the front end of core bar 18 are all hinged on front jointed shaft 25, the rear end of top rear stay plate 15 and bottom rear stay plate 16 is hinged and connected on core bar sleeve pipe 8 respectively, it is respectively arranged with top strut 14 and lowermost strut 13 between fagging 12 and core bar 18 in the middle of fagging 9 and bottom in the middle of top, one end of top strut 14 is hinged and connected to behind top on jointed shaft 22, the other end of top strut 14 is hinged and connected on core bar 18, one end of lowermost strut 13 is hinged and connected to behind bottom on jointed shaft 24, the other end of lowermost strut 13 is hinged and connected on core bar 18；Before described top, the size for connection of fagging 10, top rear stay plate 15 and top strut 14 can guarantee that in the middle of the top after strutting, fagging 9 is parallel with core bar 8, before bottom, the size for connection of fagging 11, bottom rear stay plate 16 and lowermost strut 13 can guarantee that the lowermost strut after strutting 13 is parallel with core bar 8, and the distance of top strut 14 to the core bar 18 after strutting in the present embodiment is less than the distance of lowermost strut 13 to core bar 18；The rear end of core bar sleeve pipe 18 is fixedly connected on shank housing 3, the rear end of core bar 18 stretches in shank housing 3 and is connected with the front end connecting assembly in shank housing 3, the rear end connecting assembly is connected to handle connecting rod 1, between handle connecting rod 1 with shank housing 3, threaded engagement is connected, turning handle connecting rod 1 can promote connection assembly and core bar 18 to move forward or backward, fagging 9 in the middle of top is made to be separated from each other with the middle fagging 12 in bottom or mutually draw close, so that top fagging assembly 19 struts with bottom fagging assembly 20 is upper and lower or is mutually closed。In the present embodiment, connect the structure of assembly, and the concrete attachment structure of itself and handle connecting rod 1 and core bar 18 includes: interior shaft coupling piece 4 and core bar joint pin 6, the rear end of interior shaft coupling piece 4 is provided with the rear end installation cavity 42 of collar 41 after oral area band, the front end of interior shaft coupling piece 4 is provided with the front end installation cavity 44 of collar 43 before oral area band, the head of handle connecting rod 1 is provided with projection 101, handle connecting rod 1 on rear side of projection 101 is provided with draw-in groove 102, the projection 101 of handle connecting rod 1 stretches in the rear end installation cavity 42 of interior shaft coupling piece 4, and in the draw-in groove 102 that rear collar 41 block on interior shaft coupling piece 4 is in handle connecting rod 1, so that handle connecting rod connecting rod 1 can rotate in rear end installation cavity 42 and not be separated with rear end installation cavity 42；The rear end of core bar 18 is fixedly connected on the front end of core bar joint pin 6, on the rear end step of core bar joint pin 6, occlusion is provided with the spring collar 61 of spring card slot 611, pressing inward against spring collar 61 can make the rear end of core bar joint pin 6 stretch in the front end installation cavity 44 of interior shaft coupling piece 4 together with the rear end of Spring Card certificate 61, spring collar 61 after unclamping outwards recovers deformation and makes the tight block of front collar 43 on front end installation cavity 44 in spring card slot 611, so that the rear end of core bar joint pin 6 is connected with interior shaft coupling piece 4。In order to prevent interior shaft coupling piece 4 from rotating in shank housing 3, the outer wall of interior shaft coupling piece 4 is provided with the fin ring 46 of spacing draw-in groove, spacing draw-in groove active card on fin ring 46 is contained on spacing slide rail 31, and described spacing slide rail 31 is arranged on the inwall of shank housing 1 along the moving direction of core bar 18。
Operation principle is as follows: during original state, top fagging assembly 19 and bottom fagging assembly 20 are in the state of being mutually closed, now one hold shank housing 3, turning handle connecting rod 1 on the other hand, core bar 18 is made to be moved rearwards by relative to shank housing 3, thus by fagging 11 before fagging before top 10 and bottom respectively upwards, lower both sides strut, thus driving top strut 14 and top rear stay plate 15 upwards to strut gradually, drive lowermost strut 13 and bottom rear stay plate 16 to strut downwards simultaneously, in the middle of such top, fagging 9 and bottom middle fagging 12 is just softened respectively, in actual mechanical process, can according to different needs, by turning handle connecting rod 1, they are regulated to differently strutting height, making them is asymmetric softened state。Above-mentioned expanding structure is stable and struts great efforts, pathology vertebral body effectively can be strutted to correcting height, and due to top strut 14 strut height less than lowermost strut 13 strut height, therefore, the height that struts strutting highly not symmetrical and top fagging assembly 19 strutting height and lower fagging assembly 20 of top fagging assembly 19 struts height less than bottom fagging assembly 20, strut mode so asymmetrically can more effectively pathology vertebral body be strutted, and be applicable to more complicated pathology vertebral body position。Reversely rotating handle connecting rod 1 can make top fagging assembly 19 and bottom fagging assembly 20 recover to be mutually closed state。
Claims (2)
1. asymmetric type vertebral body expander, including: core bar, core bar is outside equipped with core bar sleeve pipe, it is characterized in that: the front end of core bar is stretched out from core bar sleeve pipe, core bar front end upper, lower both sides are respectively arranged with top fagging assembly and bottom fagging assembly, top fagging assembly includes: fagging before the top of split mutually successively, fagging in the middle of top, top rear stay plate, in the middle of top before fagging and top between fagging and top rear stay plate respectively through jointed shaft before top and behind top jointed shaft be hinged, bottom fagging assembly includes: fagging before the bottom of split mutually successively, fagging in the middle of bottom, bottom rear stay plate, in the middle of bottom before fagging and bottom between fagging and bottom rear stay plate respectively through jointed shaft before bottom and behind bottom jointed shaft be hinged, the front end of fagging before top, before bottom, the front end of fagging and the front end of core bar are all hinged on front jointed shaft, the rear end of top rear stay plate and bottom rear stay plate is hinged and connected on core bar sleeve pipe respectively, it is respectively arranged with top strut and lowermost strut between fagging and core bar in the middle of fagging and bottom in the middle of top, one end of top strut is hinged and connected to behind top on jointed shaft, the other end of top strut is hinged and connected on core bar, one end of lowermost strut is hinged and connected to behind bottom on jointed shaft, the other end of lowermost strut is hinged and connected on core bar；Before described top, the size for connection of fagging, top rear stay plate and top strut can guarantee that in the middle of the top after strutting, fagging is parallel with core bar, before bottom, the size for connection of fagging, bottom rear stay plate and lowermost strut can guarantee that in the middle of the bottom after opening wide, fagging is parallel with core bar, and in the middle of the top after strutting, fagging is different to the distance of core bar from the middle fagging in bottom to the distance of core bar；The rear end of core bar sleeve pipe is fixedly connected on shank housing, the rear end of core bar stretches in shank housing and is connected with the front end connecting assembly in shank housing, the rear end connecting assembly is connected to handle connecting rod, between handle connecting rod with shank housing, threaded engagement is connected, turning handle connecting rod can promote connection assembly and core bar to move forward or backward, fagging in the middle of top is made to be separated from each other with the middle fagging in bottom or mutually draw close, so that top fagging assembly struts with bottom fagging assembly is upper and lower or is mutually closed；Connect the structure of assembly, and the concrete attachment structure connecting assembly and handle connecting rod and core bar includes: interior shaft coupling piece and core bar joint pin, the rear end of interior shaft coupling piece is provided with the rear end installation cavity of collar after oral area band, the front end of interior shaft coupling piece is provided with the front end installation cavity of collar before oral area band, the head of handle connecting rod is provided with projection, handle connecting rod on rear side of projection is provided with draw-in groove, the projection of handle connecting rod stretches in the rear end installation cavity of interior shaft coupling piece, and in the draw-in groove that the rear collar block on interior shaft coupling piece is in handle connecting rod, so that handle connecting rod can rotate in the installation cavity of rear end and not be separated with rear end installation cavity；The rear end of core bar is fixedly connected on the front end of core bar joint pin, the rear end step of core bar joint pin is fixedly installed the spring collar with spring card slot, pressing inward against spring collar can make the rear end of core bar joint pin stretch in the front end installation cavity of interior shaft coupling piece together with the rear end of spring collar, spring collar after unclamping outwards recovers to deform so that the tight block of front collar on the installation cavity of front end is in spring card slot, so that the rear end of core bar joint pin is connected with interior shaft coupling piece。
2. asymmetric type vertebral body expander according to claim 1, it is characterized in that: the outer wall of interior shaft coupling piece is provided with the fin ring of spacing draw-in groove, spacing draw-in groove active card on fin ring is contained on spacing slide rail, and described spacing slide rail is arranged on the inwall of shank housing along the moving direction of core bar。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310565156.XA CN103622733B (en) | 2013-11-14 | 2013-11-14 | Asymmetric type vertebral body expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310565156.XA CN103622733B (en) | 2013-11-14 | 2013-11-14 | Asymmetric type vertebral body expander |
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| Publication Number | Publication Date |
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| CN103622733A CN103622733A (en) | 2014-03-12 |
| CN103622733B true CN103622733B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310565156.XA Active CN103622733B (en) | 2013-11-14 | 2013-11-14 | Asymmetric type vertebral body expander |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3821836A1 (en) * | 2019-11-06 | 2021-05-19 | Wiltrom Co., Ltd. | Operating instrument and method of operating the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105534626B (en) * | 2016-03-08 | 2017-11-21 | 别永江 | Spiral vessel dilator and its special implant surgery instrument |
| CN107468392B (en) * | 2016-03-08 | 2019-08-02 | 丁明超 | Vessel dilator implanting instrument |
| CN110495943A (en) * | 2019-09-19 | 2019-11-26 | 遵义医学院附属医院 | A kind of minimal invasion reduction of the fracture device |
| CN112641503A (en) * | 2020-12-25 | 2021-04-13 | 山西白求恩医院(山西医学科学院) | Tumor radio frequency ablation device |
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| CN1748654A (en) * | 2005-09-19 | 2006-03-22 | 吴乃庆 | Bone dilator |
| CN201356638Y (en) * | 2009-03-11 | 2009-12-09 | 吴乃庆 | Centrum eurynter |
| CN201847760U (en) * | 2010-11-11 | 2011-06-01 | 李云峰 | Vertebral column centrum expanding device |
| US8425558B2 (en) * | 2008-06-06 | 2013-04-23 | Providence Medical Technology, Inc. | Vertebral joint implants and delivery tools |
| CN203598026U (en) * | 2013-11-14 | 2014-05-21 | 江苏省人民医院 | Asymmetric vertebral body expander |
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2013
- 2013-11-14 CN CN201310565156.XA patent/CN103622733B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1748654A (en) * | 2005-09-19 | 2006-03-22 | 吴乃庆 | Bone dilator |
| US8425558B2 (en) * | 2008-06-06 | 2013-04-23 | Providence Medical Technology, Inc. | Vertebral joint implants and delivery tools |
| CN201356638Y (en) * | 2009-03-11 | 2009-12-09 | 吴乃庆 | Centrum eurynter |
| CN201847760U (en) * | 2010-11-11 | 2011-06-01 | 李云峰 | Vertebral column centrum expanding device |
| CN203598026U (en) * | 2013-11-14 | 2014-05-21 | 江苏省人民医院 | Asymmetric vertebral body expander |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3821836A1 (en) * | 2019-11-06 | 2021-05-19 | Wiltrom Co., Ltd. | Operating instrument and method of operating the same |
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| CN103622733A (en) | 2014-03-12 |
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