CN102715943A - Dynamic repairing device for lumbar vertebra isthmus - Google Patents
Dynamic repairing device for lumbar vertebra isthmus Download PDFInfo
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- CN102715943A CN102715943A CN2012102321169A CN201210232116A CN102715943A CN 102715943 A CN102715943 A CN 102715943A CN 2012102321169 A CN2012102321169 A CN 2012102321169A CN 201210232116 A CN201210232116 A CN 201210232116A CN 102715943 A CN102715943 A CN 102715943A
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- threaded rod
- nut
- hook
- isthmus
- fixation hook
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Abstract
The invention relates to a dynamic repairing device for lumbar vertebra isthmus and belongs to the technical field of an internal fixing instrument of an implantation material of spine surgery. The dynamic repairing device is especially used for treating the diseases, such as lumbar vertebra isthmus disconnection and spondylosis. The dynamic repairing device comprises a threaded rod, a fixing hook, a spring and a nut, wherein the fixing hook is sleeved on the threaded rod; the nut is arranged on the threaded rod; the spring is sleeved on the threaded rod between the nut and the fixing hook; the threaded rod is arranged in a circular rod shape; a section of saw-tooth thread is arranged at the front end of the threaded rod; a cone is arranged on a head part of the saw-tooth thread; and the rear end of the threaded rod comprises a section of triangular thread and a section of outer hexagonal rod or inner hexagonal hole. The fixing hook is arranged in a cylindrical or square shape; a hook part is arranged at one end of the fixing hook; a through hole is formed at the other end of the fixing hook; and an axial direction of the through hole is vertical to an axis direction of the hook part of the fixing hook.
Description
Technical field
What the present invention relates to is the dynamic prosthetic device of a kind of lumbar isthmus, belongs to spinal surgery implant internal fixation device technical field.Be used in particular for treating diseases such as lumbar isthmus does not connect, spondyloschisis.
Background technology
Lumbar isthmus does not connect, and is called lumbar vertebral arch isthmus clinically again and splits.Be because the isthmus bony defect between the last inferior articular process of the one or both sides vertebral arch of lumbar vertebra is discontinuous, and the disease that causes.Normal person's vertebra has three former skeletonization center, and promptly vertebral body is one, and the vertebral arch of both sides respectively has one.The generation that lumbar isthmus does not connect is thought because dysplasia causes lumbar isthmus relatively weaker more.Receive stimulations such as wound, strain when waist after, will cause hypogenetic lumbar isthmus lumbar isthmus to occur and not connect.Not connecting of lumbar isthmus, sclerotin fracture appears and after, the formation that will cause lumbar isthmus to be burst apart, lumbar isthmus is burst apart and can be caused the formation of lumbar spondylolisthesis.The lumbar isthmus lumbar spondylolisthesis that causes that bursts apart is the true property slippage of lumbar vertebra, is the untimely treatment in back because lumbar isthmus is burst apart, the structural stability of lumbar vertebra is destroyed, and engenders lumbar spondylolisthesis.The generation of lumbar spondylolisthesis can cause the up and down displacement of canalis spinalis of lumbar vertebra, makes lumbar spinal stenosis, causes being positioned at tissues such as intraspinal spinal cord, nerve root and is upset, oppresses, and seriously influences and bring to patient's life.
In recent years; Mainly adopt such diseases of method treatment such as valley screw, steel wire bundle or hook screw be fixing clinically; Though these Therapeutic Method can play excellent curative; But the sickness rate of complication is still not low, and particularly for little patient of age, the concurrent degenerated disease of generation fusion failure or fusion back has a strong impact on life generation from now on.
Summary of the invention
Order of the present invention is to provide a kind of lumbar isthmus dynamic prosthetic device in order to solve above-mentioned treatment drawback, is made up of threaded rod, fixation hook, spring and nut, recovers the carrying of vertebral plate and vertebral body, realizes dynamic stability;
Simple installation, operation is quick, other positions such as pedicle of vertebral arch is not had the operation injury kept the spinal column original structure greatly.
The dynamic prosthetic device of lumbar isthmus is to take following technical scheme to realize:
The dynamic prosthetic device of lumbar isthmus comprises threaded rod, fixation hook, spring and nut.Fixation hook is sleeved on the threaded rod, and nut is housed on threaded rod, is being set with spring on the threaded rod between nut and the fixation hook.
Threaded rod is arranged to circular bar shape, and the threaded rod front end is provided with one section saw-tooth thread, and the saw-tooth thread head is set to taper shape, and the threaded rod rear end includes one section triangle thread and one section outer-hexagonal bar or inner hexagonal hole; Fixation hook is set to cylinder or square, and fixation hook one end is set to hook-type, and the hook-type width can be set to different size, and the fixation hook other end is provided with a through hole, and the through hole axial direction is vertical each other with fixation hook hook-type axis direction; Spring is set to the compression spring of standard, and two ends are closed and polish; Nut is set to the standard hex nut, and nut center screw thread matches with the threaded rod angular thread.
The dynamic repair system of lumbar isthmus is made up of threaded rod, fixation hook, spring and nut, and threaded rod penetrates fixation hook through the through hole of fixation hook, and threaded rod rear end cover upper spring screws on nut by screw thread simultaneously, forms whole assembly relation thus.
Operation principle
The dynamic repair system of a kind of lumbar isthmus of the present invention is made up of threaded rod, fixation hook, spring and nut, and threaded rod penetrates fixation hook through the through hole of fixation hook, and threaded rod rear end cover upper spring screws on nut by screw thread simultaneously, forms whole assembly relation thus.During implant into body; Earlier threaded rod is screwed in the lamina of vertebral arch after handling; Then fixation hook is put the vertebral plate of threaded rod another sections simultaneously and on the hook, then spring and nut are respectively installed on the threaded rod, the position through swivel nut adjustment fixation hook is to the normal physiological position.Because fixation hook and threaded rod are movable relatively through the screw thread restriction; Make whole system possess certain activity space; Make in the diseased region load-bearing to some extent buffering and kept the human body normal physiological activity to a certain extent, greatly avoid spinal column to close on the risk of sections regression.
The invention has the advantages that:
1, recovers the carrying of vertebral plate and vertebral body, realize dynamic stability;
2, impel the diseased region healing through certain activity restriction, non-amalgamation mode makes hypocentrum and intervertebral disc can not receive bigger compressing and produces regression;
3, simple installation, operation is quick, other positions such as pedicle of vertebral arch is not had the operation injury kept the spinal column original structure greatly.
Description of drawings
In order to understand the present invention better and to understand practical application of the present invention, at this paper following accompanying drawing is provided, and said accompanying drawing has been carried out reference.Should be noted that given accompanying drawing only as an example with preferred implementation, institute's restricted portion in restriction explanation and claims.
Fig. 1 is the dynamic prosthetic device sketch map of lumbar isthmus.
Fig. 2 is the fixation hook right view of the dynamic prosthetic device of lumbar isthmus.
The specific embodiment
With reference to accompanying drawing 1,2, the dynamic prosthetic device of lumbar isthmus comprises threaded rod 1, fixation hook 2, spring 3 and nut 4.Fixation hook 2 is sleeved on the threaded rod 1, and nut 4 is housed on threaded rod 1, is being set with spring 3 on the threaded rod 1 between nut 4 and the fixation hook 2.
Threaded rod 1 is arranged to circular bar shape, and threaded rod 1 front end is provided with one section saw-tooth thread 11, and saw-tooth thread head 12 is set to taper shape, and threaded rod 1 rear end includes one section triangle thread 13 and one section outer-hexagonal bar 14 or inner hexagonal hole; Fixation hook 2 is set to cylinder or square, and fixation hook 2 one ends are set to hook-type 21, and the hook-type width can be set to different size, and fixation hook 2 other ends are provided with a through hole 22, and the through hole axial direction is vertical each other with fixation hook hook-type axis direction; Spring 3 is set to the compression spring of standard, and two ends are closed and polish; Nut 4 is set to the standard hex nut, and nut 4 center screw threads match with the threaded rod angular thread.
The dynamic repair system of lumbar isthmus is made up of threaded rod 1, fixation hook 2, spring 3 and nut 4, and threaded rod 1 penetrates fixation hook 2 through the through hole 22 of fixation hook, and threaded rod 1 rear end cover upper spring 3 screws on nut 4 by screw thread simultaneously, forms whole assembly relation thus.
Claims (5)
1. the dynamic prosthetic device of lumbar isthmus is characterized in that: comprise threaded rod, fixation hook, spring and nut; Fixation hook is sleeved on the threaded rod, and nut is housed on threaded rod, is being set with spring on the threaded rod between nut and the fixation hook.
2. the dynamic prosthetic device of lumbar isthmus according to claim 1; It is characterized in that: said threaded rod is arranged to circular bar shape; The threaded rod front end is provided with one section saw-tooth thread; The saw-tooth thread head is set to taper shape, and the threaded rod rear end includes one section triangle thread and one section outer-hexagonal bar or inner hexagonal hole.
3. the dynamic prosthetic device of lumbar isthmus according to claim 1; It is characterized in that: said fixation hook is set to cylinder or square; Fixation hook one end is set to hook-type, and the fixation hook other end is provided with a through hole, and the through hole axial direction is vertical each other with fixation hook hook-type axis direction.
4. the dynamic prosthetic device of lumbar isthmus according to claim 1 is characterized in that: said spring is set to the compression spring of standard, and two ends are closed and polish.
5. the dynamic prosthetic device of lumbar isthmus according to claim 1, it is characterized in that: nut is set to the standard hex nut, and nut center screw thread matches with the threaded rod angular thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102321169A CN102715943A (en) | 2012-07-06 | 2012-07-06 | Dynamic repairing device for lumbar vertebra isthmus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102321169A CN102715943A (en) | 2012-07-06 | 2012-07-06 | Dynamic repairing device for lumbar vertebra isthmus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102715943A true CN102715943A (en) | 2012-10-10 |
Family
ID=46941914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102321169A Pending CN102715943A (en) | 2012-07-06 | 2012-07-06 | Dynamic repairing device for lumbar vertebra isthmus |
Country Status (1)
| Country | Link |
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| CN (1) | CN102715943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635032A (en) * | 2018-05-23 | 2018-10-12 | 中国医学科学院北京协和医院 | A kind of internal automatically-controlled elastic struts spinal growth bar system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4567884A (en) * | 1982-12-01 | 1986-02-04 | Edwards Charles C | Spinal hook |
| CN2297983Y (en) * | 1997-01-12 | 1998-11-25 | 山东省文登骨伤研究所 | Vertebral arch collapse compression fixator |
| US6786907B2 (en) * | 2001-04-24 | 2004-09-07 | Co-Ligne Ag | Instrumentation for stabilizing certain vertebrae of the spine |
| US20050267477A1 (en) * | 2000-06-06 | 2005-12-01 | Jackson Roger P | Removable medical implant closure |
| CN201516081U (en) * | 2009-05-27 | 2010-06-30 | 陈哲 | Internal fixing system of lumbar isthmus cleft restoration |
| CN201701285U (en) * | 2010-06-09 | 2011-01-12 | 杨惠林 | Single vertebral body reset fixing device |
| CN202654210U (en) * | 2012-07-06 | 2013-01-09 | 常州市康辉医疗器械有限公司 | Dynamic reconstruction device for lumbar vertebra isthmus |
-
2012
- 2012-07-06 CN CN2012102321169A patent/CN102715943A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4567884A (en) * | 1982-12-01 | 1986-02-04 | Edwards Charles C | Spinal hook |
| CN2297983Y (en) * | 1997-01-12 | 1998-11-25 | 山东省文登骨伤研究所 | Vertebral arch collapse compression fixator |
| US20050267477A1 (en) * | 2000-06-06 | 2005-12-01 | Jackson Roger P | Removable medical implant closure |
| US6786907B2 (en) * | 2001-04-24 | 2004-09-07 | Co-Ligne Ag | Instrumentation for stabilizing certain vertebrae of the spine |
| CN201516081U (en) * | 2009-05-27 | 2010-06-30 | 陈哲 | Internal fixing system of lumbar isthmus cleft restoration |
| CN201701285U (en) * | 2010-06-09 | 2011-01-12 | 杨惠林 | Single vertebral body reset fixing device |
| CN202654210U (en) * | 2012-07-06 | 2013-01-09 | 常州市康辉医疗器械有限公司 | Dynamic reconstruction device for lumbar vertebra isthmus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108635032A (en) * | 2018-05-23 | 2018-10-12 | 中国医学科学院北京协和医院 | A kind of internal automatically-controlled elastic struts spinal growth bar system |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |