CN201847760U - Vertebral column centrum expanding device - Google Patents
Vertebral column centrum expanding device Download PDFInfo
- Publication number
- CN201847760U CN201847760U CN2010206042096U CN201020604209U CN201847760U CN 201847760 U CN201847760 U CN 201847760U CN 2010206042096 U CN2010206042096 U CN 2010206042096U CN 201020604209 U CN201020604209 U CN 201020604209U CN 201847760 U CN201847760 U CN 201847760U
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- CN
- China
- Prior art keywords
- strut
- supporting rod
- expanding device
- vertebral column
- distally
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to the technical field of a medical appliance for treating spondylolisthesis, in particular to a vertebral column centrum expanding device for expanding gaps of the vertebral column. The vertebral column centrum expanding device comprises a pushing device and an expanding device, wherein the pushing device is connected with the expanding device by a central spindle; the expanding device is provided with a connecting rod, a near side supporting rod, a far side supporting rod and a middle part supporting rod; the near side supporting rod is movably connected with the central spindle by the connecting rod; and the near side supporting rod, the far side supporting rod and the middle part supporting rod are in movable connection with each other. The vertebral column centrum expanding device is novel in structure, convenient and labor-saving to operate and good in stability and reliability when being used in an operation, and is matched with the original vertebral pedicle nail lifting device, thus greatly improving the success rate of the operation, reducing the operation difficulty of the opreration and being strong in practicability.
Description
Technical field
This utility model relates to a kind of technical field for the treatment of the medical equipment of spondylolishesis, especially a kind of spinal vertebral dilator.
Background technology
During illness such as treatment spinal injury, slippage at present, the most effective Therapeutic Method is to take the pedicle of vertebral arch internal fixation system that the vertebral body of slippage is resetted and carry out converged fixed between vertebral body, final normal sagittal sequence of spinal column and the line of force relation recovered removed tractive and compressing to nerve root.Because the formation of spondylolysis is a chronic pathological process; lesion segment is under the effect of long-term ABNORMAL STRESS; partial structurtes become disorderly; spot hamartoplasia; stenosis of disc space; intervertebral height is lost even merged, therefore the slippage vertebral body are resetted, and need can realize by the active force of three kinds of different directions: intervertebral pulling power, act on traction force of slippage vertebral body and the support force of the next vertebral body.
It is big and therefore mutual restriction can cause the difficulty that resets that the slippage case extremely narrow for intervertebral space, that the vertebra slippage is very serious, intervertebral pulling and vertebral body lift these two kinds of active forces.So must realize effectively strutting to the slippage gap in operation, the pedicle nail system could effectively bring into play it and lift effect, but independent intervertebral pulling device when treating lumbar spondylolisthesis clinically, inconvenience, effort, stability and reliability are not high during operation.
The utility model content
The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, provide a kind of novel structure, stability and reliability high spinal vertebral dilator.
The technical scheme that its technical problem that solves this utility model adopts is: a kind of spinal vertebral dilator, be used for device with the vertebra space distraction, described dilator comprises propulsion plant and extension fixture, propulsion plant is connected by mandrel with extension fixture, described extension fixture has connecting rod, nearside strut, distally strut and middle part strut, connecting rod is side brace and mandrel flexible connection nearly, and nearside strut, distally strut and middle part strut flexibly connect.
The thread bush that described propulsion plant has swing handle, the handle of T font and is arranged on the handle outside and is threaded with handle.
Described is axle with the mandrel, and nearside strut, distally strut and middle part strut can be symmetrical arranged.
Be provided with the support lid between described nearside strut, distally strut and the middle part strut.
The beneficial effects of the utility model are: this utility model novel structure, easy to operate, stability during operation and good reliability cooperate original pedicle nail pulling apparatus, when improving success rate of operation greatly, the seen the bottom operation easier of operation, practical.
Description of drawings
Below in conjunction with drawings and embodiments this utility model is further specified.
Fig. 1 is the structural representation of this utility model extension fixture closure state.
Fig. 2 is the structural representation of this utility model extension fixture open configuration
Among the figure: 1. propulsion plant, the 1-1. swing handle, the 1-2. handle, the 1-3. thread bush, 2. extension fixture, the 2-1. connecting rod, 2-2. nearside strut, 2-3. distally strut, 2-4. middle part strut, 2-5. supports lid, 3. mandrel.
The specific embodiment
In conjunction with the accompanying drawings this utility model is further described now.The sketch map that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with this utility model.
Spinal vertebral dilator as depicted in figs. 1 and 2, be used for device with the vertebra space distraction, dilator comprises propulsion plant 1 and extension fixture 2, propulsion plant 1 is connected by mandrel 3 with extension fixture 2, extension fixture 2 has connecting rod 2-1, nearside strut 2-2, distally strut 2-3 and middle part strut 2-4, connecting rod 2-1 is side brace 2-2 and mandrel 3 flexible connections nearly, nearside strut 2-2, distally strut 2-3 and middle part strut 2-4 flexibly connect, propulsion plant 1 has the swing handle 1-1 of T font, handle 1-2 and the thread bush 1-3 that is arranged on the handle 1-2 outside and is threaded with handle 1-2, with mandrel 3 is axle, nearside strut 2-2, distally strut 2-3 and middle part strut 2-4 can be symmetrical arranged, nearside strut 2-2, be provided with support between distally strut 2-3 and the middle part strut 2-4 and cover 2-5.
When the extension fixture of spinal vertebral dilator is closure state, earlier the spinal vertebral dilator is inserted between vertebral body, swing handle 1-1 is threaded with thread bush 1-3, be rotated down swing handle 1-1, mandrel 3 just is pushed downwards into, because connecting rod 2-1 and mandrel 3 are connected by pin, connecting rod 2-1, nearside strut 2-2, distally strut 2-3 also is to be connected by pin with middle part strut 2-4, so when pushing away downwards, extension fixture 2 has just been strutted, with mandrel 3 is axle, connecting rod 2-1, nearside strut 2-2, distally strut 2-3 and middle part strut 2-4 are symmetrical arranged, connecting rod 2-1, nearside strut 2-2, distally strut 2-3 and middle part strut 2-4 are strutted the back parallelogram, and be so just big the gap of vertebral body support, fixedly pedicle nail and lifting in the pedicle nail implantation vertebral body, swing handle 1-1 is upwards twisted, pulling mandrel 3 moves upward, and drives extension fixture 2 closures, and the spinal vertebral dilator is extracted out in the vertebral body and just finished operation.
Claims (4)
1. spinal vertebral dilator, be used for device with the vertebra space distraction, described dilator comprises propulsion plant (1) and extension fixture (2), it is characterized in that: propulsion plant (1) is connected by mandrel (3) with extension fixture (2), described extension fixture (2) has connecting rod (2-1), nearside strut (2-2), distally strut (2-3) and middle part strut (2-4), connecting rod (2-1) nearly side brace (2-2) flexibly connects with mandrel (3), and nearside strut (2-2), distally strut (2-3) flexibly connect with middle part strut (2-4).
2. spinal vertebral dilator according to claim 1 is characterized in that: the thread bush (1-3) that described propulsion plant (1) has swing handle (1-1), the handle (1-2) of T font and is arranged on handle (1-2) outside and is threaded with handle (1-2).
3. spinal vertebral dilator according to claim 1 is characterized in that: described is axle with mandrel (3), and nearside strut (2-2), distally strut (2-3) can be symmetrical arranged with middle part strut (2-4).
4. spinal vertebral dilator according to claim 1 is characterized in that: be provided with support lid (2-5) between described nearside strut (2-2), distally strut (2-3) and the middle part strut (2-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206042096U CN201847760U (en) | 2010-11-11 | 2010-11-11 | Vertebral column centrum expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206042096U CN201847760U (en) | 2010-11-11 | 2010-11-11 | Vertebral column centrum expanding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201847760U true CN201847760U (en) | 2011-06-01 |
Family
ID=44090179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206042096U Expired - Fee Related CN201847760U (en) | 2010-11-11 | 2010-11-11 | Vertebral column centrum expanding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201847760U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103622733A (en) * | 2013-11-14 | 2014-03-12 | 江苏省人民医院 | Asymmetric type vertebral body expander |
| CN103768741A (en) * | 2014-01-10 | 2014-05-07 | 桂林电子科技大学 | Hydraulic driven space expansion device |
| CN104257422A (en) * | 2014-10-16 | 2015-01-07 | 广州医科大学附属第一医院 | Inter-vertebral spacer suite |
-
2010
- 2010-11-11 CN CN2010206042096U patent/CN201847760U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103622733A (en) * | 2013-11-14 | 2014-03-12 | 江苏省人民医院 | Asymmetric type vertebral body expander |
| CN103622733B (en) * | 2013-11-14 | 2016-06-22 | 江苏省人民医院 | Asymmetric type vertebral body expander |
| CN103768741A (en) * | 2014-01-10 | 2014-05-07 | 桂林电子科技大学 | Hydraulic driven space expansion device |
| CN103768741B (en) * | 2014-01-10 | 2016-01-13 | 桂林电子科技大学 | Hydraulically powered volume expansions device |
| CN104257422A (en) * | 2014-10-16 | 2015-01-07 | 广州医科大学附属第一医院 | Inter-vertebral spacer suite |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Changzhou Waston Medical Appliance Co., Ltd. Assignor: Li Yunfeng Contract record no.: 2014320000506 Denomination of utility model: Vertebral column centrum expanding device Granted publication date: 20110601 License type: Exclusive License Record date: 20140617 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20191111 |