CN2840938Y - Vertebral body internal fixation guider and depthkeeping drill bit and pedicle screw device - Google Patents
Vertebral body internal fixation guider and depthkeeping drill bit and pedicle screw device Download PDFInfo
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- CN2840938Y CN2840938Y CN 200520024562 CN200520024562U CN2840938Y CN 2840938 Y CN2840938 Y CN 2840938Y CN 200520024562 CN200520024562 CN 200520024562 CN 200520024562 U CN200520024562 U CN 200520024562U CN 2840938 Y CN2840938 Y CN 2840938Y
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- pedicle screw
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- bar
- guider
- vertebral body
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Abstract
A kind of vertebral body internal fixation guider and depthkeeping drill bit and pedicle screw device, the vertebral body internal fixation comprises template with guider, it is characterized in that: two pilot holes are arranged on template, and the bottom surface of template manufactures the arcuate groove with arcwall face that the top with vertebral body adapts.The depthkeeping drill bit comprises working portion, bit sub, it is characterized in that: the diameter of working portion and vertebral body internal fixation match with the diameter of the pilot hole of guider, at bit sub positive stop lug boss are arranged.The pedicle screw device comprises pedicle screw, pedicle screw connector, and said pedicle screw connector has a straight-bar, and having with straight-bar at the two ends of straight-bar is the ventilating hole plate of one, and each ventilating hole plate is installed with a pedicle screw.Can control the angle of punching as requested with guider with this vertebral body internal fixation; Cooperate this depthkeeping drill bit may command drilling depth.The linking intensity of pedicle screw device connector is big.
Description
Technical field
A kind of internal fixation guider and spiral bit and pedicle screw device.
Background technology
Because a variety of causes, thoracic vertebra, lumbal vertebra people increase now, and the operating difficulty that thoracic vertebra, lumbar vertebra are implanted pedicle screw is very big, be not sure for veteran doctor yet, and mainly be after vertebral body finds the position of punching, the degree of depth in hole, angle are difficult to determine.Owing to there is not special-purpose punching guider, can only lean on one millimeter one millimeter of experience to visit toward dark, visit and bore again after good, make a call to a pedicle screw hole and use 15-30 minute, length not only consuming time, and have a big risk.Because thoracic vertebra, lumbar vertebra are complex-shaped, existing body internal fixation guider as the said general internal fixation guider of medical circle, can only be used for the extremity tubular bone, can not be used for thoracic vertebra, lumbar vertebra punches.The punching spiral bit of existing thoracic vertebra, lumbar vertebra is difficult to control the degree of depth of punching owing to there is not limiting stand.The present pedicle nail device that uses, the pedicle screw connector is three body structures of thread connection, complex structure, linking intensity is low.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing body internal fixation with guider, this utility model provides a kind of vertebral body internal fixation guider that is suitable for, and can be controlled at the angle of vertebral body punching as requested with guider with the body internal fixation; This utility model also provides a kind of also drill bit of may command drilling depth that is used with guider with the body internal fixation; This utility model also provides a kind of big pedicle screw device of linking intensity that is used with guider with the body internal fixation.
The body internal fixation is commonly referred to as drill jig with guider in industrial quarters, the technical solution adopted in the utility model is to adopt to go up the template that end face is butterfly, two pilot holes are arranged on template, two pilot holes with by the big one side of lateral dimension, the bottom surface of template is manufactured the arcuate groove with arcwall face that spinous process, articuli intervertebrales, transverse process with thoracic vertebra or lumbar vertebra adapt, the cross section of arcuate groove is V-shaped, one of arcuate groove big one little, by the notch of a side arcuate groove of pilot hole notch greater than opposite side.Distance between two pilot holes is the 20-40 millimeter, and the angle between two pilot holes is 5 °-12 °, and the diameter of pilot hole is the 3-4 millimeter.
It is spiral bit that the body internal fixation must have the special-purpose assorted drill bit that uses simultaneously with guider, this spiral bit comprises working portion, bit sub, working portion has helicla flute and helical edges, the lower end of working portion is a bit, it is characterized in that: the diameter of working portion and body internal fixation match with the diameter of the pilot hole of guider, at the positive stop lug boss of the restricted drilling depth of bit sub, the positive stop lug boss lower surface is the 48-72 millimeter to the distance of bit.
With the body internal fixation matching used pedicle nail device in addition of guider, this pedicle nail device comprises that the top is pedicle screw, nut, the pedicle screw connector of screw rod, polygonal limiting stand is arranged at the top of pedicle screw, respectively there is a through hole at the two ends of pedicle screw connector, a pedicle screw is installed in each through hole, nut is screwed in the screw rod of pedicle screw, it is characterized in that: said pedicle screw connector has a straight-bar, at the two ends of straight-bar a ventilating hole plate is arranged respectively, ventilating hole plate and straight-bar are processed as one.Angle between pedicle screw and the straight-bar is 90 ° ± 15 °.The polygonal limiting stand of pedicle screw is the 20-50 millimeter to the distance of pedicle screw point down.
The pedicle screw device generally is two and cooperates installation, at straight-bar the horizontal-associate grab is installed, the horizontal-associate grab is c-shaped, the horizontal-associate grab is hooked in straight-bar, one screw is arranged at the top of horizontal-associate grab, is twisting a screw at screw, the horizontal-associate grab have one with the vertical through hole of straight-bar, wear link rod and fastening by screw in through hole, two have a straight-bar and are being connected by link rod with the pedicle screw device of two pedicle screws.
The body internal fixation is with guider and spiral bit and pedicle screw device, is adopting CT helical scanning imaging and carrying out vertebral body fixedly the time, used medical apparatus and instruments with Computer Simulation.During use, earlier patient's fracture site vertebral body and two neighbouring joint normal vertebral body are carried out CT helical scanning imaging,, construct the digital simulation model of fracture area CT image Computer Processing.Determine operation plan and carry out the computer procedures simulation, determine necessary parameter, as the diameter and the length of pedicle screw, the angle of inclination in the length of pedicle screw connector and nail hole, the body internal fixation angle and the length of guider pilot hole.Choose or customize body internal fixation guider, spiral bit and pedicle screw device according to the parameter of determining.During operation, the body internal fixation is fixed with the vertebral body of guider and fracture site, hole on vertebral body with guider by the body internal fixation with the spiral bit of choosing, remove body internal fixation guider then, be screwed into pedicle screw, adjust the position of pedicle screw after, turn nut, the vertebral body that then is fixed is according to predetermined spacing and angle orientation and fixing, and last locking nut and link rod are finished the vertebral body internal fixation.The body internal fixation cooperates CT helical scanning imaging and uses Computer Simulation with guider and spiral bit, realizing the visual while, can be according to the degree of depth and the precise angle location and guiding of phantom to boring, the pedicle screw tap operation that the doctor that is full of risk, has rich experiences could be implemented becomes relatively easy, very help popularizing and raising of vertebral body operation, also obviously reduced the risk of vertebral body operation, reduced requirement, improved the feasibility and the accuracy of operation operator.No longer need test of many times implant specification in the operation process, determine the degree that resets by rule of thumb, avoid carrying out repeatedly the X-ray examination operation, operating time is short, makes a call to a pedicle screw hole with 1 minute, and operation quality height is subjected to the extent of injury low.This pedicle screw apparatus structure is simple, linking intensity is high.
Description of drawings
Fig. 1 is the vertical view of this guider embodiment.
Fig. 2 is the cutaway view along A-A line among Fig. 1.
Fig. 3 is the cutaway view along B-B line among Fig. 1.
Fig. 4 is the structure chart of spiral bit embodiment.
Fig. 5 is the reference diagram of body internal fixation when using with guider.
Fig. 6 is and 5 corresponding left views.
Fig. 7 is the front view of this pedicle screw device embodiment.
Fig. 8 is the partial sectional view along C-C line among Fig. 7, and Fig. 7 amplifies relatively.
Fig. 9 is and the corresponding vertical view of Fig. 8.
Among the above-mentioned figure:
1, template 2, last end face 3, pilot hole 4, side 5, V-arrangement side 6, last end face 7, pilot hole 8, side 9, prism 10, side 11, end face 12, arcwall face 13, arcuate groove 14, sulculus mouth 15, bottom land 16, arcwall face 17, vat 18, bit sub 19, positive stop lug boss 20, polished rod 21, working portion 22, bit 23, spiral bit 24, guider 25, spinous process 26, articuli intervertebrales 27, transverse process 28, posterior longitudinal ligament 29, vertebral pulp 30, fibrous ring 31, vertebral body 32, hex nut 33, pedicle screw 34, screw rod 35, ventilating hole plate 36, horizontal-associate grab 37, straight-bar 38, pedicle screw 39, hexagonal limiting stand 40, polished rod 41, thread segment 42, screw tip 43, hex head screw 44, screw 45, link rod 46, through hole 47, pedicle screw 48, straight-bar 49, horizontal-associate grab 50, pedicle screw
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with embodiment and accompanying drawing thereof, but the body internal fixation is not limited to following embodiment with the specific embodiment of guider and spiral bit and pedicle screw device.
The body internal fixation that Fig. 1, Fig. 2 and Fig. 3 describe has a template 1 with guider, template 1 is butterfly in the horizontal direction, pilot hole 3 and pilot hole 7 are arranged on template 1, pilot hole 3 and the pilot hole 7 close big sides 4 of lateral dimension, the bottom surface of template 1 manufactures that spinous process, articuli intervertebrales, transverse process with vertebral body adapt has the arcuate groove 13 of arcwall face 12 and arcwall face 16, the cross section of arcuate groove 13 is V-shaped, 13 1 of arcuate grooves big one little, arcuate groove 13 is big notch 17 by a side of pilot hole, and opposite side is a sulculus mouth 14.Distance between pilot hole 3 and the pilot hole 7 is the 20-40 millimeter, angle between pilot hole 3 and the pilot hole 7 is 5 °-12 °, pilot hole 3 is the 3-4 millimeter with the diameter of pilot hole 7, distance in the present embodiment between pilot hole 3 and the pilot hole 7 is 30 millimeters, angle between pilot hole 3 and the pilot hole 7 is 10 °, and pilot hole 3 is 3.8 millimeters with the diameter of pilot hole 7.
See Fig. 4 with the body internal fixation with the structure of the matching used spiral bit of guider, this spiral bit has working portion 21, bit sub 18, working portion 21 has helicla flute and helical edges, in the lower end of working portion 21 are bit 22, it is characterized in that: the diameter of the diameter of the working portion 21 of spiral bit and the pilot hole 3 of guider and pilot hole 7 matches, at the positive stop lug boss 19 of the polished rod 20 restricted drilling depths of bit sub 18.
The body internal fixation is installed and used referring to Fig. 5 and Fig. 6 with guider 24 and medical spiral bit 23, concern with the position of guider 24 for the ease of observing the body internal fixation with vertebral body 31, vertebral body 31 among the figure is schematic, the body internal fixation is fixing with the vertebral body 31 of fracture site with guider 24, on vertebral body 31, hole by the pilot hole 3 of guider 24 with the spiral bit of choosing 23, remove guider 24 then, be screwed into pedicle screw.
With body internal fixation guider 24 matching used pedicle nail devices in addition, see Fig. 7, this pedicle nail device comprises the pedicle screw 33 of pedicle screw as having screw rod 34 that two tops are screw rod, the pedicle screw connector, the screw rod of each pedicle screw is being twisted two hex nuts 32, pedicle screw 33 all has hexagonal limiting stand 39 with the top of pedicle screw 38, the pedicle screw connector has two through holes, a pedicle screw is installed in each through hole, it is characterized in that: said pedicle screw connector has a straight-bar 37, at the two ends of straight-bar 37 ventilating hole plate 35 is arranged respectively, ventilating hole plate 35 is processed as one with straight-bar 37, in the present embodiment, the angle between pedicle screw 33 and the pedicle screw 38 is 10 °.39 times distances to pedicle screw bit 22 of hexagonal limiting stand are 40 millimeters.Be used for the ease of two pedicle screw devices, at straight-bar 37 horizontal-associate grab 36 is installed, horizontal-associate grab 36 is c-shaped, horizontal-associate grab 36 is at straight-bar 37, one screw 44 is arranged at the top of horizontal-associate grab 36, is twisting a hex head screw 43 at screw 44, horizontal-associate grab 36 have one with straight-bar 37 vertical through holes 46, in through hole 46, wear link rod 45 and fastening, see Fig. 8 by hex head screw 43.Two have a straight-bar and are being connected by link rod 45 with the pedicle screw device of two pedicle screws, see Fig. 9.
Claims (4)
1, a kind of vertebral body internal fixation guider, it comprises a template, it is characterized in that: the last end face of template is butterfly, two pilot holes are arranged on template, two pilot holes with by the big one side of lateral dimension, be the bottom surface of template the arcuate groove that spinous process, articuli intervertebrales, transverse process with vertebral body adapt with arcwall face, the cross section of arcuate groove is V-shaped, one of arcuate groove big one little, by the notch of a side arcuate groove of pilot hole notch greater than opposite side; Distance between two pilot holes is the 20-40 millimeter, and the angle between two pilot holes is 5 °-12 °, and the diameter of pilot hole is the 3-4 millimeter.
2, a kind of depthkeeping drill bit, it comprises working portion, bit sub, working portion has helicla flute and helical edges, the lower end of working portion is a bit, it is characterized in that: the vertebral body internal fixation of the diameter of working portion and claim 1 matches with the diameter of the pilot hole of guider, at the positive stop lug boss of the restricted drilling depth of bit sub, the positive stop lug boss lower surface is the 48-72 millimeter to the distance of bit.
3, a kind of pedicle screw device, it comprises that the top is pedicle screw, nut, the pedicle screw connector of screw rod, polygonal limiting stand is arranged at the top of pedicle screw, respectively there is a through hole at the two ends of pedicle screw connector, a pedicle screw is installed in each through hole, and nut is screwed in the screw rod of pedicle screw, it is characterized in that: said pedicle screw connector has a straight-bar, at the two ends of straight-bar a ventilating hole plate is arranged respectively, ventilating hole plate and straight-bar are processed as one; Angle between pedicle screw and the straight-bar is 90 ° ± 15 °, and the polygonal limiting stand of pedicle screw is the 20-50 millimeter to the distance of pedicle screw point down.
4, pedicle screw device according to claim 3, it is characterized in that: the horizontal-associate grab is installed at straight-bar, the horizontal-associate grab is c-shaped, the horizontal-associate grab is hooked in straight-bar, one screw is arranged at the top of horizontal-associate grab, twisting a screw at screw, the horizontal-associate grab have one with the vertical through hole of straight-bar, in through hole, wear link rod and fastening by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024562 CN2840938Y (en) | 2005-07-29 | 2005-07-29 | Vertebral body internal fixation guider and depthkeeping drill bit and pedicle screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520024562 CN2840938Y (en) | 2005-07-29 | 2005-07-29 | Vertebral body internal fixation guider and depthkeeping drill bit and pedicle screw device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2840938Y true CN2840938Y (en) | 2006-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520024562 Expired - Fee Related CN2840938Y (en) | 2005-07-29 | 2005-07-29 | Vertebral body internal fixation guider and depthkeeping drill bit and pedicle screw device |
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| CN (1) | CN2840938Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390773B (en) * | 2007-09-19 | 2010-11-10 | 陆声 | Manufacturing method of navigation template for positioning vertebral pedicle |
| CN102048593B (en) * | 2009-10-30 | 2013-10-30 | 长庚大学 | Introducer manufacturing method |
| CN105078563A (en) * | 2014-05-19 | 2015-11-25 | 中国人民解放军南京军区南京总医院 | Operative module navigation method for improving bone screw entering quality of department of orthopedics |
| CN106510833A (en) * | 2016-11-17 | 2017-03-22 | 南华大学 | Double-side positioning type pediculus arcus vertebrae screw implanting aiming device and preparation method thereof |
| CN106691562A (en) * | 2016-11-17 | 2017-05-24 | 南华大学 | Individualized vertebral pedicle set screw drill jig with quick-changing drill bush and manufacturing method of individualized vertebral pedicle set screw drill jig |
| EP2588009B1 (en) | 2010-06-29 | 2018-12-26 | George Frey | Patient matching surgical guide |
| CN109171932A (en) * | 2018-10-11 | 2019-01-11 | 刘观燚 | A kind of screw steel plate system for being fixed in posterior approach for axis |
| CN110167472A (en) * | 2017-01-09 | 2019-08-23 | 元裕建 | Spinal fixing device |
| CN111821011A (en) * | 2020-08-28 | 2020-10-27 | 西安市红会医院 | An adjustable atlas screw positioning guide device |
-
2005
- 2005-07-29 CN CN 200520024562 patent/CN2840938Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101390773B (en) * | 2007-09-19 | 2010-11-10 | 陆声 | Manufacturing method of navigation template for positioning vertebral pedicle |
| CN102048593B (en) * | 2009-10-30 | 2013-10-30 | 长庚大学 | Introducer manufacturing method |
| EP2588009B1 (en) | 2010-06-29 | 2018-12-26 | George Frey | Patient matching surgical guide |
| CN105078563A (en) * | 2014-05-19 | 2015-11-25 | 中国人民解放军南京军区南京总医院 | Operative module navigation method for improving bone screw entering quality of department of orthopedics |
| CN106510833A (en) * | 2016-11-17 | 2017-03-22 | 南华大学 | Double-side positioning type pediculus arcus vertebrae screw implanting aiming device and preparation method thereof |
| CN106691562A (en) * | 2016-11-17 | 2017-05-24 | 南华大学 | Individualized vertebral pedicle set screw drill jig with quick-changing drill bush and manufacturing method of individualized vertebral pedicle set screw drill jig |
| CN110167472A (en) * | 2017-01-09 | 2019-08-23 | 元裕建 | Spinal fixing device |
| CN110167472B (en) * | 2017-01-09 | 2022-12-30 | 元裕建 | Spinal fixation device |
| CN109171932A (en) * | 2018-10-11 | 2019-01-11 | 刘观燚 | A kind of screw steel plate system for being fixed in posterior approach for axis |
| CN111821011A (en) * | 2020-08-28 | 2020-10-27 | 西安市红会医院 | An adjustable atlas screw positioning guide device |
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| Date | Code | Title | Description |
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| 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 |