CN204274629U - A kind of pedicle nail entry point localizer - Google Patents
A kind of pedicle nail entry point localizer Download PDFInfo
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- CN204274629U CN204274629U CN201420676501.7U CN201420676501U CN204274629U CN 204274629 U CN204274629 U CN 204274629U CN 201420676501 U CN201420676501 U CN 201420676501U CN 204274629 U CN204274629 U CN 204274629U
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- fixing unit
- guide shaft
- shaft fixing
- slide block
- base
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Abstract
This utility model design medical instruments field, provide a kind of pedicle nail entry point localizer that can realize accurately locating entry point, comprise guide shaft fixing unit, base, first sleeve, the first slide block, transverse process clamp assemblies, positioning component, described guide shaft fixing unit and base are mutually vertical to be fixedly connected with, and described guide shaft fixing unit is positioned at outside in the middle part of base; Described first set jacket casing is located on guide shaft fixing unit, and described first slide block to be located at inside guide shaft fixing unit and can along guide shaft fixing unit longitudinal sliding motion; Described transverse process clamp assemblies is fixedly connected with sleeve, and described transverse process clamp assemblies is connected with base sliding, and described positioning component is fixedly connected with the first slide block.The beneficial effects of the utility model are: structure is simple, designs ingenious, simple to operate, can improve the accuracy of pedicle nail entry point location, ensure that pedicle nail puts the quality of nail, improve the success rate of operation, are convenient to penetration and promotion.
Description
Technical field
This utility model relates to medical apparatus field, particularly relates to a kind of pedicle nail entry point localizer.
Background technology
Pedicle nail plays an important role in the treatments such as spinal trauma reset, malformation correction, unstability reconstruction, and the development of pedicle internal fixators system has promoted the development of spinal surgery technology greatly.The localization method of conventional pedicle nail entry point has both at home and abroad at present:
1, Roy Camille method: the point of intersection of transverse process midtread on line and the longitudinal on line of facet joint mid point;
2, Weinstein method: superior articular process's outer rim vertical line and the horizontal intersection point of transverse process axis are entry point;
3, pedicle of vertebral arch detects method: this method the vertebral plate of fixed-segment will make Partial Resection and directly control and detect vertebral arch location of root or manifest pedicle of vertebral arch, looks at underlying nail straight;
4, Computerized three-dimensional navigation method: set up Three-Dimensional Dynamic video by computer disposal, for pedicle screw inserts navigation.
In said method, the most conventional with Weinstein method, the entry point that this positioning mode is determined is actually the terminal of pedicle of vertebral arch major axis on cross section, enters nail with this entry point, enters nail, must reach and accurately put nail according to correct sagittal plane angle and horizontal plane angle.But, the many range estimations with patient of determination of the pedicle nail entry point at present in Orthopeadic Surgery posterior lumbar spinal surgery judge the horizontal position of transverse process axis, the intersection point getting itself and superior articular process's outer rim vertical line is entry point, subjectivity is too strong, lack necessary locating apparatus, thus keep away the situations such as unavoidable entry point skew, need adjustment, then greatly reduce the intensity of nail pedicle fix after repeatedly changing its course, easily cause the failure of nail pedicle fix.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of pedicle nail entry point localizer, makes it possible to the best entry point finding pedicle nail, avoids entry point to offset, strengthen the intensity of nail pedicle fix.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is a kind of screw entrance point localizer, comprise guide shaft fixing unit, base, first sleeve, the first slide block, transverse process clamp assemblies, positioning component, described guide shaft fixing unit and base are mutually vertical to be fixedly connected with, and described guide shaft fixing unit is positioned at outside in the middle part of base; Described first set jacket casing is located on guide shaft fixing unit, and described first slide block to be located at inside guide shaft fixing unit and can along guide shaft fixing unit longitudinal sliding motion; Described transverse process clamp assemblies is fixedly connected with sleeve, and described transverse process clamp assemblies is connected with base sliding, and described positioning component is fixedly connected with the first slide block.
Further, described transverse process clamp assemblies comprises the first motion bar and the second motion bar that are hinged by jointed shaft, described jointed shaft is fixedly connected on sleeve, the lower end of described first motion bar and the second motion bar is all connected with the second slide block, described second slide block is arranged on base and also can slides by respect thereto, described first motion bar and the second motion bar upper end are connected to the first fixture and the second fixture, described second slide block downside is provided with fixture block, described first motion bar, second motion bar, the center of two the second slide blocks and two fixture blocks is on same sagittal plane and parallel with the sagittal plane at place, guide shaft fixing unit axis.
Further, described positioning component comprise be fixedly connected with the first slide block fixture, the receiver that can move up and down along described fixture be sheathed on fixture, be fixedly connected with and the second vertical sleeve, L-shaped handle with receiver one end; Described handle one end is fixedly connected with receiver; Described second sleeve is symmetrically arranged with location fixed block, described location fixed block be positioned at the second place, sleeve axis sagittal plane on and parallel with the sagittal plane at place, guide shaft fixing unit axis, the mid point of described second sleeve axis and base is on same coronalplane.
Further, be longitudinally provided with a groove in described guide shaft fixing unit, described first slide block is positioned at described groove and can slides up and down by relatively described groove.
Further, described base two ends are arranged with a horizontal cell body, and described second slide block to lay respectively in described cell body and can horizontally slip by relatively described cell body.
Pedicle nail entry point localizer of the present utility model adopts Weinstein method, to be fixedly connected with described sleeve by described transverse process clamp assemblies and to be connected with described base sliding, make the mid point of described sleeve axis and described base on same coronalplane, be fixedly connected with described first slide block by described positioning component, described positioning component can be vertically moved along sleeve; By the held tight that can realize transverse process that is slidably connected of described transverse process clamp assemblies and described base, by horizontal and vertical adjustment, and then accurately orient entry point, be superior articular process's outer rim vertical line and the horizontal intersection point of transverse process axis.The beneficial effects of the utility model are: the accuracy that can improve pedicle nail entry point location, ensures that pedicle nail puts the quality of nail, improve the success rate of operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of pedicle nail entry point of this utility model localizer;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
Label declaration:
1, guide shaft fixing unit; 2, base; 3, the first sleeve; 4, the first slide block; 5, transverse process clamp assemblies;
50, jointed shaft; 51, the first motion bar; 52, the second motion bar; 53, the first fixture; 54 second fixtures; 55, the second slide block; 56, fixture block; 6, positioning component; 60, fixture; 61 receivers; 62, the second sleeve; 63, fixed block is located; 7, handle; 8, groove.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by specific embodiment and relevant drawings, this utility model will be described in further detail.At this, reference diagram is the schematic diagram of idealized embodiments of the present utility model, and the embodiment shown in this utility model should not be considered to the given shape being only limitted to the region shown in figure, but comprises obtained shape, such as manufactures the deviation caused.Part accessory in the present embodiment, the expression in figure is schematic, but this should not be considered to limit scope of the present utility model.
As shown in Figures 1 to 3, a kind of pedicle nail entry point localizer of this utility model embodiment, comprise guide shaft fixing unit 1, base 2, first sleeve 3, first slide block 4, transverse process clamp assemblies 5, positioning component 6, described guide shaft fixing unit 1 is fixedly connected with base 2 is mutually vertical, and described guide shaft fixing unit 1 is positioned at outside in the middle part of base 2; Described first sleeve 3 is sheathed on guide shaft fixing unit 1, and described first slide block 4 to be located at inside guide shaft fixing unit 1 and can along guide shaft fixing unit 1 longitudinal sliding motion; Described transverse process clamp assemblies 5 is fixedly connected with sleeve, and described transverse process clamp assemblies 5 is slidably connected with base 2, and described positioning component 6 is fixedly connected with the first slide block 4.
Seen from the above description, pedicle nail entry point localizer of the present utility model adopts Weinstein method, to be fixedly connected with described sleeve by described transverse process clamp assemblies 5 and to be slidably connected with described base 2, make the mid point of described sleeve axis and described base 2 on same coronalplane, be fixedly connected with described first slide block 4 by described positioning component 6, described positioning component 6 can be vertically moved along sleeve; Described transverse process clamp assemblies 5 and the held tight that can realize transverse process that is slidably connected of described base 2, by horizontal and vertical adjustment, and then accurately orient entry point, be superior articular process's outer rim vertical line and the horizontal intersection point of transverse process axis.
Further, described transverse process clamp assemblies 5 comprises the first motion bar 51 and the second motion bar 52 be hinged by jointed shaft 50, described jointed shaft 50 is fixedly connected on sleeve, the lower end of described first motion bar 51 and the second motion bar 52 is all connected with the second slide block 55, described second slide block 55 is arranged on base 2 and also can slides by respect thereto 2, described first motion bar 51 and the second motion bar 52 upper end are connected to the first fixture 53 and the second fixture 54, described second slide block 55 downside is provided with fixture block 56, described first motion bar 51, second motion bar 52, the center of two the second slide blocks 55 and two fixture blocks 56 is on same sagittal plane and parallel with the sagittal plane at place, guide shaft fixing unit 1 axis.
From the above, the clamping that described first fixture 53 and the second fixture 54 can realize described fixture block 56 pairs of transverse process is operated by medical worker, when described fixture block 56 clamps the transverse process of dentata, the midtread line of described base 2 is the middle shaft horizontal line of transverse process.
Further, described positioning component 6 comprise be fixedly connected with the first slide block 4 fixture 60, the receiver 61 that can move up and down along described fixture 60 be sheathed on fixture 60, be fixedly connected with and the second vertical sleeve 62, L-shaped handle 7 with receiver 61 one end; Described handle 7 one end is fixedly connected with receiver 61; Described second sleeve 62 is symmetrically arranged with location fixed block 63, described location fixed block 63 be positioned at the second place, sleeve 62 axis sagittal plane on and parallel with the sagittal plane at place, guide shaft fixing unit 1 axis, the mid point of described second sleeve 62 axis and base 2 is on same coronalplane.
From the above, the displacement on coronalplane of 62 61, described second sleeve can be adjusted by the movement that described handle 7 is upper and lower, forward and backward, make described location fixed block 63 be positioned at the outer rim of articular process, now the described axis of the second sleeve 62 and the intersection point at vertebral arch rear portion are entry point.
Further, be longitudinally provided with a groove 8 in described guide shaft fixing unit 1, described first slide block 4 is positioned at described groove 8 and can slides up and down by relatively described groove 8.
Further, described base 2 two ends are arranged with a horizontal cell body, and described second slide block 55 to lay respectively in described cell body and can horizontally slip by relatively described cell body.
Utility model works principle: patient gets ventricumbent position, stringer otch is hit exactly after waist, successively cut, peel off paraspinal muscle, appear spinous process, bilateral lamina, lower articular is dashed forward and the near-end of transverse process, first fixture 53 and the second fixture 54 of the pedicle of lumbar vertebra nail entry point localizer provided by operation this utility model, the clamping of the described fixture block 56 pairs of transverse process below described second slide block 55 is positioned at described in realization, buckle is described first fixture 53 and described second fixture 54 tightly, then hand-held described handle 7 adjusts the described position of receiver 61 on coronalplane, described location fixed block 63 is made to be positioned at the outer rim of superior articular process, maintain the position of described second sleeve 62 this moment, hold gag through described second sleeve 62 in vertebral arch rear aperture, this opening is pedicle nail and inserts required entry point.
In sum, the pedicle nail entry point locator structure that this utility model provides is simple, designs ingenious, simple to operate, the accuracy of pedicle nail entry point location can be improved, ensure that pedicle nail puts the quality of nail, improve the success rate of operation, be convenient to penetration and promotion.
Above-listed preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; be understood that; the foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a pedicle nail entry point localizer, comprise guide shaft fixing unit, base, the first sleeve, the first slide block, transverse process clamp assemblies, positioning component, it is characterized in that: described guide shaft fixing unit and base are mutually vertical to be fixedly connected with, described guide shaft fixing unit is positioned at outside in the middle part of base; Described first set jacket casing is located on guide shaft fixing unit, and described first slide block to be located at inside guide shaft fixing unit and can along guide shaft fixing unit longitudinal sliding motion; Described transverse process clamp assemblies is fixedly connected with sleeve, and described transverse process clamp assemblies is connected with base sliding, and described positioning component is fixedly connected with the first slide block.
2. a kind of pedicle nail entry point localizer according to claim 1, it is characterized in that: described transverse process clamp assemblies comprises the first motion bar and the second motion bar that are hinged by jointed shaft, described jointed shaft is fixedly connected on sleeve, the lower end of described first motion bar and the second motion bar is all connected with the second slide block, described second slide block is arranged on base and also can slides by respect thereto, described first motion bar and the second motion bar upper end are connected to the first fixture and the second fixture, described second slide block downside is provided with fixture block, described first motion bar, second motion bar, the center of two the second slide blocks and two fixture blocks is on same sagittal plane and parallel with the sagittal plane at place, guide shaft fixing unit axis.
3. a kind of pedicle nail entry point localizer according to claim 2, is characterized in that: described base two ends are arranged with a horizontal cell body, and described second slide block to lay respectively in described cell body and can horizontally slip by relatively described cell body.
4. a kind of pedicle nail entry point localizer according to claim 1, is characterized in that: described positioning component comprise be fixedly connected with the first slide block fixture, the receiver that can move up and down along described fixture be sheathed on fixture, be fixedly connected with and the second vertical sleeve, L-shaped handle with receiver one end; Described handle one end is fixedly connected with receiver; Described second sleeve is symmetrically arranged with location fixed block, described location fixed block be positioned at the second place, sleeve axis sagittal plane on and parallel with the sagittal plane at place, guide shaft fixing unit axis, the mid point of described second sleeve axis and base is on same coronalplane.
5. a kind of pedicle nail entry point localizer according to claim 1, is characterized in that: be longitudinally provided with a groove in described guide shaft fixing unit, described first slide block is positioned at described groove and can slides up and down by relatively described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676501.7U CN204274629U (en) | 2014-11-13 | 2014-11-13 | A kind of pedicle nail entry point localizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420676501.7U CN204274629U (en) | 2014-11-13 | 2014-11-13 | A kind of pedicle nail entry point localizer |
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| Publication Number | Publication Date |
|---|---|
| CN204274629U true CN204274629U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420676501.7U Expired - Fee Related CN204274629U (en) | 2014-11-13 | 2014-11-13 | A kind of pedicle nail entry point localizer |
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| CN (1) | CN204274629U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799934A (en) * | 2015-05-18 | 2015-07-29 | 阮渊 | Vertebral pedicle screw-placing guider |
| CN106037909A (en) * | 2016-05-19 | 2016-10-26 | 汤向阳 | Thoracolumbar spine vertebral pedicle screw entrance point and angle positioning device |
| ES2651736R1 (en) * | 2016-07-28 | 2018-03-19 | Rafael AGUIRRE GARCIA | GUIDE FOR SURGICAL INTERVENTION |
-
2014
- 2014-11-13 CN CN201420676501.7U patent/CN204274629U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799934A (en) * | 2015-05-18 | 2015-07-29 | 阮渊 | Vertebral pedicle screw-placing guider |
| CN106037909A (en) * | 2016-05-19 | 2016-10-26 | 汤向阳 | Thoracolumbar spine vertebral pedicle screw entrance point and angle positioning device |
| ES2651736R1 (en) * | 2016-07-28 | 2018-03-19 | Rafael AGUIRRE GARCIA | GUIDE FOR SURGICAL INTERVENTION |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |