CN100484486C - Orthopedic vertebral body repositioning device - Google Patents
Orthopedic vertebral body repositioning device Download PDFInfo
- Publication number
- CN100484486C CN100484486C CNB2007100163403A CN200710016340A CN100484486C CN 100484486 C CN100484486 C CN 100484486C CN B2007100163403 A CNB2007100163403 A CN B2007100163403A CN 200710016340 A CN200710016340 A CN 200710016340A CN 100484486 C CN100484486 C CN 100484486C
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- CN
- China
- Prior art keywords
- reduction
- fixed bar
- vertebral body
- orthopedic
- rod
- 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
Disclosed is an orthopedic vertebra reduction device which consists of a reduction nut (1), a reduction rod (2) and a fixed rod (3). The back end of the fixed rod (3) is provided with screw thread which is matched with the reduction nut (1) and the side surface of the front end of the fixed rod (3) is provided with a plurality of ratchets. The reduction rod (2) is sleeved on the fixed rod (3); the front end of the reduction rod (2) is provided with gears. The invention is used to restore the isthmic spondylolisthesis, the invention can be used singly or used in cooperation with a pedicle of vertebral arc nail pulling method, and the operation can achieve better effect especially when the pedicle of vertebral arc nail path is damaged or when a patient suffers from osteoporosis. The invention which is simple in operation and powerful in reduction can complement the defect of the reduction method of the traditional orthopedic vertebra reduction device.
Description
Technical field
The present invention relates to a kind of lumbar spondylolisthesis bone surgery special equipment.The specifically a kind of orthopedic vertebral body dislocation internal fixation auxiliary device that resets.
Background technology
Lumbar spondylolisthesis is orthopaedics field commonly encountered diseases, frequently-occurring disease, and cardinal symptom is a low back pain, or lower limb root pain, numbness, symptoms such as intermittent claudication, and sickness rate is about 5% in the crowd, needs operator quantity big.Along with novel internal fixation device and development of technology, the treatment technology of lumbar spondylolisthesis has obtained remarkable progress, with surgical result is best, in the operative treatment process, be divided into for reset, fix, three steps of bone-graft fusion, and reset is key in the operative treatment, common repositioning method is to lift by pedicle nail at present, but meeting the pedicle nail road in art damages, or patient suffers from osteoporosis and the patient serious to lumbar spondylolisthesis, the Chang Yin pedicle nail that resets when lifting is deviate from from the nail road and is not reached the purpose that resets so that operative failure.
Summary of the invention
The objective of the invention is to provide a kind of reliable for effect, simple to operate, reset strong and can lift and follow closely the orthopedic vertebral body repositioning device that is used with vertebral body.
The present invention is achieved in that the orthopedic vertebral body repositioning device of being made up of reduction nut, release link, fixed bar, the rear end of fixed bar is threaded with reduction nut and cooperates, the front end side of fixed bar is provided with several ratchets, release link is enclosed within on the fixed bar, the front end of release link is provided with the branch tooth, and reduction nut is provided with correction hole.
Described orthopedic vertebral body repositioning device, the side of fixed bar front end are provided with 3-5 ratchet.
The invention provides a kind of brand-new resetting means for the treatment of lumbar spondylolisthesis, when resetting the vertebral body of slippage, both can use separately and also can cooperate the pedicle nail czochralski method to use, particularly damage in the pedicle nail road, or patient is when suffering from osteoporosis, can remedy the deficiency of pedicle nail czochralski method, avoid operative failure.
Description of drawings
Accompanying drawing is a population structure sketch map of the present invention.
The specific embodiment
As shown in drawings, reduction nut 1, release link 2, fixed bar 3 are formed orthopedic vertebral body repositioning device.The rear end of fixed bar 3 is threaded with reduction nut 1 and cooperates, and the front end side of fixed bar 3 is provided with several ratchets; When resetting, release link 2 is enclosed within on the fixed bar 3, spinning reduction nut 1 can promote release link 2 and move on fixed bar 3, and reduction nut 1 is provided with correction hole, can be inserted in the end of thread of fixed bar 3, the angle of spinning reduction nut 1 adjustable whole fixed bar 3.
During operative reduction, a complete set of vertebral body reduction instrument autoclaving is standby, in treatment lumbar spondylolisthesis reattachment surgery, during row vertebral body reset process, earlier vertebral pulp is thoroughly removed until the vertebral body cartilage, select the suitable fixed bar 3 of anterior anti-skidding ratchet width for use, between anterior parallel two vertebral bodys that are inserted with slippage that fixed bar 3 is had a ratchet, with the correction spanner on the reduction nut 1 fixed bar 3 is revolved and to turn 90 degrees, anti-skidding ratchet tip on the fixed bar 3 is towards advancing slip last vertebral body, insert release link 2 on fixed bar 3, the forward part tooth top of release link 2 forms the integral body that slides over each other in the upper edge of hypocentrum.Reduction nut 1 is rotated on the rear end screw thread of fixed bar 3, promote release link 2 and move, the vertebral body of slippage resets under the impetus of release link 2.
Therefore, adopt the present invention simple to operate, it is strong, reliable for effect to reset, and can lift nail with vertebral body and be used, and can remedy the shortcoming of conventional reset method, guarantees the success of operation.Can reset with single cover during operation, also available two covers reset simultaneously, the fixedly fixation of pedicle apparatus of back that resets, and insert bone piece or Cage.
Claims (2)
1, a kind of orthopedic vertebral body repositioning device, it is characterized in that: it is made up of reduction nut (1), release link (2), fixed bar (3), the rear end of fixed bar (3) is threaded with reduction nut (1) and cooperates, the front end side of fixed bar (3) is provided with several ratchets, and when resetting, release link (2) is enclosed within on the fixed bar (3), spinning reduction nut (1), can promote release link (2) and upward move at fixed bar (3), the front end of release link (2) is provided with the branch tooth, and reduction nut (1) is provided with correction hole.
2, orthopedic vertebral body repositioning device according to claim 1 is characterized in that: the side of fixed bar (3) front end is provided with 3-5 ratchet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100163403A CN100484486C (en) | 2007-07-25 | 2007-07-25 | Orthopedic vertebral body repositioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100163403A CN100484486C (en) | 2007-07-25 | 2007-07-25 | Orthopedic vertebral body repositioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101103935A CN101103935A (en) | 2008-01-16 |
| CN100484486C true CN100484486C (en) | 2009-05-06 |
Family
ID=38998153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100163403A Expired - Fee Related CN100484486C (en) | 2007-07-25 | 2007-07-25 | Orthopedic vertebral body repositioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100484486C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9486256B1 (en) | 2013-03-15 | 2016-11-08 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
| US10136927B1 (en) | 2013-03-15 | 2018-11-27 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
| CN104523326B (en) * | 2015-01-22 | 2017-08-29 | 段国庆 | A kind of orthopedic vertebral body repositioning device |
| US11051861B2 (en) | 2018-06-13 | 2021-07-06 | Nuvasive, Inc. | Rod reduction assemblies and related methods |
| CN109498077B (en) * | 2018-11-14 | 2021-02-26 | 华北水利水电大学 | Lumbar spondylolisthesis repositor |
-
2007
- 2007-07-25 CN CNB2007100163403A patent/CN100484486C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101103935A (en) | 2008-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090506 Termination date: 20100725 |