CN2607109Y - Internal fixer for spine - Google Patents
Internal fixer for spine Download PDFInfo
- Publication number
- CN2607109Y CN2607109Y CN 03225307 CN03225307U CN2607109Y CN 2607109 Y CN2607109 Y CN 2607109Y CN 03225307 CN03225307 CN 03225307 CN 03225307 U CN03225307 U CN 03225307U CN 2607109 Y CN2607109 Y CN 2607109Y
- Authority
- CN
- China
- Prior art keywords
- plate
- vertebral
- spine
- internal fixation
- utility
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a fixing equipment in the backbone, which comprises a reshaping stick 1, a pedicle of vertebrae arc bolt 2, a connecting plate 5 and a vertebral plate hook7. The utility model adopts the structure of nail and stick, synchronously extra adopts stick and plate connecting as well as plate and vertebral plate hook connecting mechanism, which effectively distracts the stress, and prevents to break snail and synchronously increases the effect of anti side cutting force, anti side curved torque and anti torque moment.
Description
Technical field
This utility model relates to a kind of internal fixation of spine device, is meant a kind of fixed internal fixation of spine device in rear that is used for especially.
Background technology
At present, the internal fixation of spine device has been widely used in the clinical treatment of various spinal column sufferers.Wherein because of having advantages such as operation process is simple, the fixed mode in rear obtained developing faster and using again." spinal surgery is newly performed the operation " the 44th～50 page that publishing house of China Concord Medical Science University publishes August calendar year 2001 introduced several spinal columns rear inner fixing device and fixing means.And it is wherein better with the rear inner fixing device effect of pedicle screw, orthopedic rod or steel plate composition.When this device uses, be the center to hinder awl, respectively thereon the cross point in the transverse process root mid point of position awl and the next awl and little joint forward (or other corresponding position and direction) insert pedicle screw, and put to proper depth; Install in the end of pedicle screw to correct rod or correct steel plate along vertebra post direction again and get final product.This method, than in spinous process fix, little joint screw fixation, vertebral plate and arthrodesis device, comparatively outstanding advantage and effect are all arranged.But this fixture exists following shortcoming: when at first this fixture was treated, because transition of stress concentrates on the root of pedicle screw, broken nail or nail pulling phenomenon can take place in its result.In addition, the hardness of pedicle nail is very high, exists greatest differences between its elastic modelling quantity and the bone, can stress distributes to change and produce bone density to descend, and pedicle nail also can become flexible when bone grafting growth failure sooner or later, and then withdraws from backward or fracture.Also have, after this fixture was used, though can provide supporting force and anti-anteflexion moment of flexure to unstable vertebra, the shearing aspect effect of antagonism side horizontal direction was little.
The utility model content
The purpose of this utility model just provides the internal fixation of spine device of the high stability that a kind of fixed stress disperses, the anti-unstable arm of force is long.
Internal fixation of spine device of the present utility model comprises orthopedic rod, pedicle screw, article two, orthopedic rod is fixedly connected by the connecting plate that the centre has hole slot with plate rod butt hook, the vertebral lamina hook that has through hole is fixed on the connecting plate with screw and nut tightened-up structure, forms the spinal column rear inner fixing device of a nail, hook, plate, rod formation.
In the inner fixing device of the present utility model, situation that can be fixed according to the unstable spine of being cured can be provided with two groups of above pedicle nails and connecting plate, vertebral lamina hook structure.
In addition, in order to strengthen therapeutic effect, the shape of orthopedic rod can be made the suitable curved shape of shape with the spinal column segment of being treated.
Internal fixation of spine device of the present utility model, because when having adopted nail, rod structure, increase and to have adopted rod, plate to be connected and fixed and plate, vertebral lamina hook are connected and fixed structure, make whole inner fixing device not only pass through pedicle screw, but also come jointly spinal column to be fixed by vertebral lamina hook, increased the stress point dough-making powder, thereby disperseed stress effectively, prevented broken nail or taken off nail; Simultaneously because vertebral lamina hook has been participated in fixingly, and what make orthopedic rod carries power section lengthening, is equivalent to the arm of force and increases, the stress that reduces pedicle screw from another point of view bears.In addition, be a rigid unitary because connecting plate and orthopedic rod are fixedly connected into, strengthened the effect of anti-lateral shear power, anti lateral instability moment and torque resistant, improved the stability and the barrier propterty of whole inner fixing device.
Description of drawings
Fig. 1 is the structure principle chart of inner fixing device of the present utility model;
Fig. 2 is the STRUCTURE DECOMPOSITION figure of inner fixing device of the present utility model;
The specific embodiment
Come this utility model is done into one description below in conjunction with accompanying drawing.As shown in Figures 1 and 2, orthopedic excellent 1 of the internal fixation of spine device fixedlys connected by pad 11 and nut 3 with pedicle screw 2; Orthopedic excellent 1 again by plate rod butt hook 6 and nut 3, fixedlys connected in the two ends that are provided with the connecting plate 5 that slotted eye 4 is installed with the centre; The vertebral lamina hook 7 that has installing hole 8 after being fixed on the corresponding vertebral plate with vertebral plate screw 9, is fixedly connected on the connecting plate 5 by the other end and the nut 10 that slotted eye 4 usefulness vertebral plate screws 9 are installed.According to different treatment requirements, many group pedicle screws 2 and connecting plate 5, vertebral lamina hook 7 structures can be set, to reach optimum therapeuticing effect.During operation,, be the center at first, pedicle screw 2 is installed on upper vertebral body and the next vertebral body respectively to hinder vertebra as the treatment lumbar vertebra compression fracture; Reuse vertebral lamina hook screw 9 is by vertebral lamina hook installing hole 8, be fixed on the vertebral lamina hook 7 that inserts corresponding vertebral plate gap on the adjacent vertebral plate after, with nut 10 vertebral lamina hook 7 is fixed on the plate rod connecting plate 5; Then on pedicle screw 2, be connected and fixed in orthopedic excellent 1, the vertebra distraction reduction with pad 11 and nut 3; Fixedlyed connected with orthopedic excellent 1 with pad 11 and nut 3 in the two ends of plate rod connecting plate 5 at last.After the internal fixation of spine device of this moment installs, stress point not only is applied on the pedicle screw 2, and also disperse simultaneously to be applied on the vertebral lamina hook 7, effectively stress is carried out suitable dispersion, thereby avoided the broken nail that causes because of the stress undue concentration effectively and nail gets loose and other disease of setting out of causing owing to stress concentration.Simultaneously, the while makes that orthopedic excellent 1 the power section of carrying extends because vertebral lamina hook 7 has been participated in fixing and bearing stress, is equivalent to the arm of force and increases, and the stress that reduces pedicle screw 2 from another point of view bears.In addition; because the construction features of inner fixing device of the present utility model determines; fixture itself is exactly a rigid structure body; when being connected and fixed with sick vertebra, increased the junction point dough-making powder, formed a more stable mechanism of ammonium fixation after fixing; rigidity is better; stress rationally disperses, and not only better stable and protective effect has been born in opposing, the spinal column reinforcing of preceding curvature square, and the opposing of offside moment of flexure, moment of torsion and lateral shear power simultaneously also is enhanced widely.
If meet the situation of more piece vertebra folding or need to strengthen under the situation of degree of stability, in the inner fixing device of the present utility model, situation that can be fixed according to the unstable spine of being cured, be provided with two groups of above pedicle of vertebral arch spiral shells, 2 nails and connecting plate 5, vertebral lamina hook 7 structures, bear point, face in the hope of what further increase stress, obtain the best and produce effects.
In addition,, reduce the disease of setting out, orthopedic excellent 1 shape can be made the suitable curved shape of shape with the spinal column segment of being treated in order to strengthen therapeutic effect.
Need to prove, all on the basis of technical conceive of the present utility model, thereby carry out the technical scheme that the equivalent substitution of any improvement or technical characterictic draws, all are protection domains of the present utility model.
Claims (4)
1, a kind of internal fixation of spine device, comprise orthopedic rod (1), pedicle screw (2), it is characterized in that: described orthopedic rod (1) is by plate rod butt hook (6), pad (11) and nut (3), fixedlys connected in the two ends that are provided with the connecting plate (5) that slotted eye (4) is installed with the centre; Be provided with the vertebral lamina hook (7) of installing hole (8), after fixing, be fixedly connected on the described connecting plate (5) by the other end and nut (10) cooperation of installation slotted eye (4) again with vertebral plate screw (9) with vertebral plate screw (9) and vertebral plate.
2, a kind of by the described internal fixation of spine device of claim 1, it is characterized in that: described pedicle nail (2) can be established more than two groups.
3, a kind of by claim 1 or 2 described internal fixation of spine devices, it is characterized in that: described connecting plate (5) can be provided with more than two, and is provided with corresponding vertebral lamina hook (7) thereon.
4, a kind of by claim 1,2 or described internal fixation of spine device, it is characterized in that: described orthopedic rod (1) can be arranged to by the suitable curved shape of treatment spinal segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225307 CN2607109Y (en) | 2003-04-18 | 2003-04-18 | Internal fixer for spine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03225307 CN2607109Y (en) | 2003-04-18 | 2003-04-18 | Internal fixer for spine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2607109Y true CN2607109Y (en) | 2004-03-24 |
Family
ID=34163654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03225307 Expired - Fee Related CN2607109Y (en) | 2003-04-18 | 2003-04-18 | Internal fixer for spine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2607109Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102551852A (en) * | 2010-10-28 | 2012-07-11 | 史赛克创伤公司 | Bolt and tool with anti-torque features |
| US9023045B2 (en) | 2010-10-28 | 2015-05-05 | Stryker Trauma Sa | Bolt and tool with anti-torque features |
| CN105188581A (en) * | 2013-03-08 | 2015-12-23 | 华沙整形外科股份有限公司 | Iliac connectors |
| CN107212918A (en) * | 2017-07-07 | 2017-09-29 | 遵义医学院附属医院 | It is a kind of to prevent from resetting the internal fixation device of spine lost |
-
2003
- 2003-04-18 CN CN 03225307 patent/CN2607109Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102551852A (en) * | 2010-10-28 | 2012-07-11 | 史赛克创伤公司 | Bolt and tool with anti-torque features |
| US9023045B2 (en) | 2010-10-28 | 2015-05-05 | Stryker Trauma Sa | Bolt and tool with anti-torque features |
| CN102551852B (en) * | 2010-10-28 | 2015-07-01 | 史赛克创伤公司 | Bolt and tool with anti-torque features |
| CN105188581A (en) * | 2013-03-08 | 2015-12-23 | 华沙整形外科股份有限公司 | Iliac connectors |
| CN107212918A (en) * | 2017-07-07 | 2017-09-29 | 遵义医学院附属医院 | It is a kind of to prevent from resetting the internal fixation device of spine lost |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |