CN203303143U - Corrector of placing angle of pedicle screw - Google Patents
Corrector of placing angle of pedicle screw Download PDFInfo
- Publication number
- CN203303143U CN203303143U CN2013203365978U CN201320336597U CN203303143U CN 203303143 U CN203303143 U CN 203303143U CN 2013203365978 U CN2013203365978 U CN 2013203365978U CN 201320336597 U CN201320336597 U CN 201320336597U CN 203303143 U CN203303143 U CN 203303143U
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- China
- Prior art keywords
- angle
- guide pin
- pedicle
- corrector
- cross arm
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- Expired - Fee Related
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- 238000001356 surgical procedure Methods 0.000 abstract 5
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000013139 quantization Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000000278 spinal cord Anatomy 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 210000002517 zygapophyseal joint Anatomy 0.000 description 1
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Abstract
The utility model relates to a corrector of a placing angle of a pedicle screw when spinal surgery is carried out, belonging to the technical field of clinical surgery instruments. The corrector comprises a guide needle and a cross arm, wherein an angle board is fixed at one side of the cross arm; a rectangular hole is formed in the middle of the cross arm; sliding tails are arranged on the two side walls of the hole; the guide needle is connected with the cross arm through a sliding sleeve; the sliding sleeve is arranged in the rectangular hole of the cross arm to be in sliding connection with the cross arm. The corrector of the placing angle of the pedicle screw is simple and ingenious to design and convenient to use, and the screw placing angle of the pedicle screw is subjected to quantitative measurement instead of empirical estimation, so that the accuracy rate of the placing angle of the pedicle screw can be effectively improved, surgery operation of a doctor is convenient, surgery safety is improved, and surgery speed is improved.
Description
Technical field
This utility model relates to the angle correct device that in a kind of spinal operation, pedicle nail is inserted, and is the clinical surgical instrument technical field.
Background technology
In spinal operation, the use of pedicle nail is quite extensive.It is a technology that requirement is very high that pedicle nail is inserted, and inserts the incorrect meeting of angle and causes spinal cord, blood vessel injury or squeeze into outside pedicle of vertebral arch.Rationally insert and require pedicle nail to pass this narrow and small bone pipeline of pedicle of vertebral arch, namely require at the sagittal plane angle and the horizontal plane angle all reaches rational angle.Inserting of pedicle nail is still free-hand inserting at present, the doctor determines to insert direction and the angle of pedicle of vertebral arch often according to clinical experience, there is higher misplace rate, in operation process, often need pedicle of vertebral arch advanced to follow closely direction adjustment, affect the operation process, therefore, while being badly in need of providing a kind of the operation, adjust the device of pedicle of vertebral arch angle, improve and insert accuracy rate.
The utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: provide a kind of pedicle nail to insert angle corrector, improve and put the nail accuracy rate, facilitate doctor's operation technique, increase operation safety.
Guide pin, the transverse arm of comprising described in the utility model, transverse arm one side fixed angle plate, the transverse arm middle part arranges slot, and there is slideway the two side, hole, and guide pin is connected with transverse arm by sliding sleeve, and sliding sleeve is arranged in the transverse arm slot, is slidably connected with transverse arm.
Guide pin slides by sliding on transverse arm, the angle of process can directly on angle board, read, the angle of inserting of guide pin conveniently is set, and simplicity of design is ingenious, easy to use, make the angle of pedicle screw of pedicle of vertebral arch change measures of quantization into by experience estimation, especially be applicable to putting first the situation that the rear angle needs of nail are adjusted, angle adjustment is had with reference to can effectively improving the accuracy rate that pedicle nail is inserted, facilitate doctor's operation technique, increase operation safety, improve operative speed.
Described guide pin bottom is provided with the section of expanding, and can stop when guide pin is inserted to insert deeply to enter in canalis spinalis, guarantees safety.
Described angle board bottom arranges guide pin bushing, by guide pin bushing and sliding sleeve, guide pin is carried out to angle orientation.
Angle board high scale least unit is 2.
Guide pin passes guide pin bushing and sliding sleeve is placed on transverse arm, by moving sliding sleeve, guide pin one end is moved on transverse arm, by angle board, determine move angle, insert pedicle nail, due to guide pin bottom, expand the existence of section while inserting, prevent that guide pin from inserting deeply, guarantee operation safety.
The beneficial effect that this utility model compared with prior art has is:
It is ingenious that this utility model pedicle nail is inserted the angle corrector simplicity of design, easy to use, makes the angle of pedicle screw of pedicle of vertebral arch change measures of quantization into by experience estimation, can effectively improve the accuracy rate that pedicle nail is inserted, facilitate doctor's operation technique, increase operation safety, improve operative speed; The section of expanding of guide pin bottom, can stop when guide pin is inserted to insert deeply to enter in canalis spinalis, guarantees operation safety; The clinical demand amount is large, and production cost is low, is easy to penetration and promotion, has huge economic benefit and good market prospect.
The accompanying drawing explanation
Fig. 1 is this utility model structural representation;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is waist four pedicle of vertebral arch schematic diagrams.
In figure: 1, guide pin; 2, expand section; 3, guide pin bushing; 4, transverse arm; 5, angle board; 6, sliding sleeve.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1 and Figure 2, this utility model embodiment transverse arm 4 middle parts arrange slot, and there is slideway the two side, hole, transverse arm 4 one side fixed angle plates 5, angle board 5 high scale least unit are 2, angle board 5 bottoms arrange guide pin bushing 3 and are connected with guide pin 1, and guide pin bushing 3 is flexibly connected with angle board 5, can rotate with guide pin 1, guide pin 1 bottom arranges the section 2 of expanding, guide pin 1 top is connected with transverse arm 4 by sliding sleeve 6, and sliding sleeve 6 is arranged in transverse arm 4 slots, is slidably connected with transverse arm 4.
As shown in Figure 3, the present embodiment work process be take waist 4 pedicles of vertebral arch and is example:
L1 is the pedicle of vertebral arch axis, and L2 is the vertebral body sagittal line, and the angle that L1 and L2 form is the e angle, e angle in topography refers to the angle between pedicle of vertebral arch axis and vertebral body sagittal plane, mean pedicle of vertebral arch from rear forward, interior side's inclination angle, the e angle is for a certain vertebral body, be changeless, its general rule should be that T10～T12 is that 0～5, L1 is 5, L2 is 5～10, L3 is that 10, L4 is that 10～15, L5 is 15, specific to each vertebral body, the e angle can accurately measure according to preoperative CT scan result.The pedicle of vertebral arch pin is accurately inserted, and the puncture direction need to be as far as possible in full accord with the pedicle of vertebral arch axis, and the e angle is identical respectively as far as possible therefore to need to adjust angle.
In operation, the patient gets dorsal position, and the waist Posterior midline approach is peeled off paraspinal muscle to the facet joint outer rim along spinous process to both sides.At first, according to clinical experience at waist 4 spinous process by rear to front squeezing into one piece of guide pin 1, the expanding 2 can to stop that guide pin inserted dark of guide pin bottom, in case enter in canalis spinalis.Then, in art, take X-ray film, obtain normotopia and the side position X-ray film of lumbar vertebra.According to side position x-ray, measure location guide pin 1 and the angle of pedicle of vertebral arch axis in the required adjustment of sagittal plane with bevel protractor.In the guide pin bushing 3 that guide pin 1 is inserted in to transverse arm 4 and sliding sleeve 6, guide pin 1 parallels with long axis of body, and moving sliding sleeve 6 finds on sagittal plane and needs to adjust the corresponding graduation mark of angle as on sagittal plane, putting the nail direction on angle board 5.Rotation transverse arm 4 is to perpendicular with long axis of body, and the nail direction is put as pedicle of vertebral arch on horizontal plane in the e angle of measuring according to preoperative CT.According to above two angles, a side pedicle nail can be inserted more exactly, the offside pedicle nail can be inserted with method.
It is ingenious that this utility model pedicle nail is inserted the angle corrector simplicity of design, easy to use, makes the angle of pedicle screw of pedicle of vertebral arch change measures of quantization into by experience estimation, can effectively improve the accuracy rate that pedicle nail is inserted, facilitate doctor's operation technique, increase operation safety, improve operative speed; The section of expanding of guide pin bottom, can stop when guide pin is inserted to insert deeply to enter in canalis spinalis, guarantees safety; The clinical demand amount is large, and production cost is low, is easy to penetration and promotion, has huge economic benefit and good market prospect.
Claims (4)
1. a pedicle nail is inserted angle corrector, it is characterized in that: comprise guide pin (1), transverse arm (4), transverse arm (4) one side fixed angle plates (5), transverse arm (4) middle part arranges slot, there is slideway the two side, hole, guide pin (1) is connected with transverse arm (4) by sliding sleeve (6), and sliding sleeve (6) is arranged in transverse arm (4) slot, is slidably connected with transverse arm (4).
2. pedicle nail according to claim 1 is inserted angle corrector, it is characterized in that: described guide pin (1) bottom is provided with the section of expanding (2).
3. pedicle nail according to claim 1 is inserted angle corrector, it is characterized in that: described angle board (5) bottom arranges guide pin bushing (3).
4. pedicle nail according to claim 1 is inserted angle corrector, it is characterized in that: angle board (5) high scale least unit is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203365978U CN203303143U (en) | 2013-06-09 | 2013-06-09 | Corrector of placing angle of pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203365978U CN203303143U (en) | 2013-06-09 | 2013-06-09 | Corrector of placing angle of pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203303143U true CN203303143U (en) | 2013-11-27 |
Family
ID=49609385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203365978U Expired - Fee Related CN203303143U (en) | 2013-06-09 | 2013-06-09 | Corrector of placing angle of pedicle screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203303143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852956A (en) * | 2016-04-15 | 2016-08-17 | 上海瑞博医疗科技有限公司 | Cervical pedicle screw feeding guiding formwork and preparation method thereof |
| CN114305641A (en) * | 2021-12-27 | 2022-04-12 | 慈溪市人民医院医疗健康集团(慈溪市人民医院) | Pedicle screw advances nail angle measuring subassembly |
-
2013
- 2013-06-09 CN CN2013203365978U patent/CN203303143U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852956A (en) * | 2016-04-15 | 2016-08-17 | 上海瑞博医疗科技有限公司 | Cervical pedicle screw feeding guiding formwork and preparation method thereof |
| CN114305641A (en) * | 2021-12-27 | 2022-04-12 | 慈溪市人民医院医疗健康集团(慈溪市人民医院) | Pedicle screw advances nail angle measuring subassembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131127 Termination date: 20140609 |