CN106643368A - Measurement device for door slot size of posterior cervical single-door expansive laminoplasty - Google Patents
Measurement device for door slot size of posterior cervical single-door expansive laminoplasty Download PDFInfo
- Publication number
- CN106643368A CN106643368A CN201611209542.5A CN201611209542A CN106643368A CN 106643368 A CN106643368 A CN 106643368A CN 201611209542 A CN201611209542 A CN 201611209542A CN 106643368 A CN106643368 A CN 106643368A
- Authority
- CN
- China
- Prior art keywords
- ruler
- door
- bevel protractor
- posterior cervical
- frame size
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/56—Gauges for measuring angles or tapers, e.g. conical calipers
- G01B3/563—Protractors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/02—Rulers with scales or marks for direct reading
- G01B3/04—Rulers with scales or marks for direct reading rigid
- G01B3/06—Rulers with scales or marks for direct reading rigid folding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a novel medical measurement device and relates to a measurement device for a door slot size of posterior cervical single-door expansive laminoplasty. The device is composed of a quarter round rule and two straight rules. In a utilization process, a preoperative cervical vertebra CT (Computed Tomography) image of a patient is combined and an angle needing to be lifted of a vertebral plate is measured according to a surgery target vertebral canal mark sagittal saw; and the door slot size needed in the surgery is calculated by utilizing a matched formula, and the device is convenient and simple to operate.
Description
Technical field
The invention belongs to medical measurement device field, and in particular to a kind of posterior cervical open-door laminoplasty Plastic operation door
Seam size measurement.
Background technology
Posterior cervical open-door laminoplasty Plastic operation is clinical treatment Multilevel cervical spondylotic myelopathy, Cervical posterior longitudinal ligament
The main method of the diseases such as ossified disease, Development cervical canal stenosis disease.Cervical Vertebral Canal Procedures sagittal can effectively be expanded by the operation
Footpath, so as to reach the purpose of spinal decompression.
With reference to Fig. 2 and Fig. 3, CT image simulation figures before posterior cervical open-door laminoplasty Plastic operation as shown in Figure 2, CT figures
As simulation drawing includes following structure：Spinous process 1, vertebral foramen 2, intraspinal tube transverse process transverse diameter 3, transverse process 4, centrum 5, foramen transversarium 6, lateral mass 7, vertebra
Plate 8, vertebral plate inner edge 9.If the point of the both sides of intraspinal tube transverse process transverse diameter 3 is C, D point, connect C, D point, the length of CD be vertebral plate 8 it
Between width；The line of arc CD vertebral plates inner edge 9, is center line Y, and with CD O points are met at, and with arc CD A points are met at, and the distance of OA is as preoperative
The length of sagittal canal diameter；Postoperative, vertebral plate 8 is lifted, and the D points position of intraspinal tube transverse process transverse diameter 3 moves to D ' points, and arc CD ' is
The postoperative line of vertebral plate inner edge 9, vertebral plate 8 will not be deformed upon during lifting, and center line Y and arc CD ' intersects at B points, and OB is then
For the length of postoperative sagittal canal diameter, DD ' posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame sizes, ∠ DCD ' are that vertebral plate is lifted
Play angle, i.e. α angles.
And the enlarged degree of sagittal canal diameter is closely related with the size of the operation enabling crack between a door and its frame, crack between a door and its frame is opened bigger, should
The sagittal diameter increase of sections canalis spinalis is also bigger.If crack between a door and its frame is too small, spinal decompression effect can be caused bad；If crack between a door and its frame is excessive,
Vertebral plate is raised excessive, can cause cervical spinal instability, results even in the fracture of vertebral plate door-hinge.Therefore, science accurately estimates enabling greatly
It is little, the efficient and success rate of operation can be greatly improved.And at this stage clinically for the size opened the door relies solely on patient
Experience and art in detect, and the enlarged degree of the enabling size sagittal canal diameter to be caused cannot be known in art,
Only checked by postoperative patient and learnt.But the shape of different crowd its same canalis spinalis has very big difference, same people its not
Also there is very big difference with the shape of sections canalis spinalis, and for same sections canalis spinalis causes its shape also can because of its state of an illness difference
There is very big difference.So, judge by experience merely in posterior cervical open-door laminoplasty Plastic operation the size of crack between a door and its frame with
The relation of sagittal canal diameter value added is simultaneously unreliable.Accordingly, it would be desirable to one kind can in the preoperative rely on CT iconography related data numbers
According to, the device of crack between a door and its frame size is accurately estimated, personalized operation is carried out for different cervical vertebral segments, to reach the mesh of accurate operation
's.
The content of the invention
For above-mentioned existing defect and deficiency, it is an object of the present invention to provide a kind of measurement apparatus, the measurement apparatus
Can simply be measured on cervical vertebra CT images before operation in patients, the enabling for accurately estimating the sagittal canal diameter for wanting to reach is big
It is little, effectively personalized operation is carried out so as to be directed to different cervical vertebral segments using simple to operate, reach the purpose of accurate operation.
To realize above-mentioned target, the present invention adopts following technical method：
A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement, the measurement apparatus include angle
Chi, the first ruler and the second ruler；
The bevel protractor is made up of two orthogonal length rulers and a curved angle chi；
First ruler is installed on bevel protractor top, and with the movable connection of bevel protractor, the first ruler intersects with bevel protractor
At the intersection point P of two orthogonal length rulers of bevel protractor；
Second ruler is located at the first ruler top, is connected with the first ruler slidingtype.
The length ruler of the bevel protractor is used to measure the width between vertebral plate；Second ruler is used to measure canalis spinalis sagittal
Electrical path length；First ruler reads curved angle chi angle by rotating on bevel protractor around intersection point P, records arc angle
The scale change of degree chi lifts angle measuring vertebral plate.
Specifically, the meter full scale of two length rulers of the bevel protractor be 0～8cm, the angular range of curved angle chi
For 0～90 °.
Further, two length rulers of the bevel protractor leave the lay edges of 0.5cm.
Specifically, first ruler is the length ruler of 8～10cm, and the first ruler is radius 0.2 with bevel protractor connecting place
The semicircle shape of～0.5cm.
In addition, gap is left in the graduation mark lower section of first ruler, the gap width of the first ruler is 0.5～0.8mm,
The gap of the first ruler is located between 0.5～7.5cm of the first ruler scale.
Specifically, second ruler is the length ruler of 8～10cm, and the second ruler is located at the first ruler top, and second is straight
The intersection point of chi and the first ruler is Q, the upper end of the second ruler and the first ruler connected end for radius 0.5cm semicircle shape, second
Ruler can be along the gap of the first ruler slidably.
Further, second ruler the semicircle back side arrange radius for 0.3cm thin rounded flakes, thin rounded flakes with
Second ruler is connected by radially-directed bar, and first ruler is located between the second ruler and thin rounded flakes, the radial guiding
Snap in the first ruler gap to bar, slidably and rotate in gap.
Specifically, first ruler is fixed with bevel protractor using rivet, the first ruler can around rivet on bevel protractor from
By rotating.
Preferably, the bevel protractor, the first ruler, the second ruler and thin rounded flakes adopt plastic transparent material.
Compared to prior art, the technique effect of the present invention is：
The present invention posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement, can be with reference to operation in patients before
Cervical vertebra CT images, measure related data, by length and measurement result (vertebral plate raising height, the canalis spinalis transverse process of purpose sagittal diameter
Transverse diameter), the size of required crack between a door and its frame is accurately calculated, and can be adjusted flexibly according to the right position of crack between a door and its frame, use
The accurate survey calculation enabling size of easy to operate, science, can greatly improve the efficient and success rate of operation, with wide
Medical science prospect.
Description of the drawings
Fig. 1 is the overall structure diagram of the measurement apparatus of the present invention；
Fig. 2 is CT image simulation figures before posterior cervical open-door laminoplasty Plastic operation；
Fig. 3 is posterior cervical open-door laminoplasty Plastic operation CT image simulation figures；
Fig. 4 is the structural representation of a chis；
Fig. 5 is the structural representation of b chis；
Fig. 6 is the structural representation of c chis；
Each label represents implication in figure：A- bevel protractors；The rulers of b- first；The rulers of c- second；The rulers of P- first and bevel protractor
Intersection point；The intersection point of the rulers of Q- second and the first ruler；1- spinous process；2- vertebral foramens；3- intraspinal tube transverse process transverse diameters；4- transverse process；5- centrums；
6- foramen transversariums；7- lateral mass；8- vertebral plates；9- vertebral plates inner edge；α-vertebral plate lifts angle.
Specific embodiment
The using method of the present invention is described in further detail below in conjunction with the accompanying drawings.
According to clinical medicine experience, the optimal sagittal canal diameter of human body is 14～16mm, is carrying out posterior cervical single open-door
Canal expansive laminoplasty operation consent, according to posterior cervical open-door laminoplasty Plastic operation CT images, measurement determines optimal mistake shape footpath
Position, therefore, inventor has done posterior cervical open-door laminoplasty Plastic operation CT image simulation figures, as shown in figures 2-3,
If the point of the both sides of intraspinal tube transverse process transverse diameter 3 is C, D point, connect C, D point, CD is vertebral plate width.Center line Y is, with CD O points are met at.
A points are met at arc CD, preoperative, vertebral plate 8 is not lifted, arc CAD is the preoperative line of vertebral plate inner edge 9；Postoperative vertebral plate 8 is lifted to D ' by D points
Point, Y and arc CD ' meets at B points.OA is original sagittal canal diameter, and OB is postoperative sagittal canal diameter, and DD ' is then crack between a door and its frame size, ∠
DCD ' lifts angle for vertebral plate 8.Circle is done by radius of OB, with arc CAD B ' is intersected at.Because vertebral plate 8 does not have during raising
There is deformation, then ∠ BCB '=∠ DCD ', CD=CD '.
The invention provides a kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement, a kind of cervical vertebra
Way of escape open-door laminoplasty Plastic operation crack between a door and its frame size measurement, the measurement apparatus include bevel protractor a, the first ruler b and
Second ruler c.
The width and vertebral plate that the bevel protractor a of the present invention is used to measure between vertebral plate 8 lifts angle, and the second ruler b is used
In measurement sagittal canal diameter, the measurement work of the first ruler b fit angles chi and the second ruler c.
The bevel protractor a of the present invention is made up of two orthogonal length rulers and a curved angle chi；The bevel protractor
The meter full scale of two length rulers be 6cm, the angular range of curved angle chi is 0～90 °, and two length rulers of bevel protractor are stayed
There is the lay edges of 0.5cm.
The first ruler b of the present invention is 8 length ruler, and the first ruler b is located at bevel protractor a tops, the first ruler b and angle
Chi a connecting places for radius 0.5cm semicircle shape, the first ruler b and bevel protractor a using rivet be fixed on bevel protractor two mutually
At the intersection point P of vertical length ruler, the first ruler b can be rotated freely around P.
Gap is left in the graduation mark lower section of the first ruler b, and the gap width of the first ruler b is 0.5mm, the seam of the first ruler
Gap is located between 0.5～7.5cm of the first ruler scale.
Second ruler c is the length ruler of 8cm, and the second ruler c is located at the first ruler b tops, the second ruler c and the first ruler
The intersection point of b is Q, and the semicircle back side of the second ruler c arranges thin rounded flakes d of the radius for 0.3cm, and thin rounded flakes d are straight with second
Chi c is connected by radially-directed bar f,
First ruler b is located between the second ruler c and thin rounded flakes d, and the radially-directed bar f snaps in the first ruler b seams
In gap, slidably and rotate in gap.
For convenience of survey measurements, the bevel protractor a of the present invention, ruler b, ruler c and thin rounded flakes d adopt plastic, transparent material
Material.
Embodiment：
Posterior cervical open-door laminoplasty Plastic operation CT image simulation figures as shown in Figure 3, determine the optimal of people's human body
Sagittal canal diameter is 16mm, if the length of postoperative sagittal canal diameter is OB, the distance of OB is optimal sagittal canal diameter length, canalis spinalis
Interior transverse process transverse diameter 3 both sides C, D are known point.
With reference to Fig. 1 and Fig. 3, using the measurement apparatus shown in Fig. 1, bevel protractor a lower edge scales are overlapped with CD, wherein angle
Chi a overlaps with the first ruler b intersection points P with C points, measures the length of CD.
First ruler b is adjusted to overlap with bevel protractor a lower edge scales, upward sliding the second ruler c, while the first ruler
B is rotated up around P points, when the position of the second ruler c overlaps and the second ruler c and intersection point Q of the first ruler b is arrived with CD center line Y
Up to operation purpose sagittal canal diameter length OB position when, the anglec of rotation of record now the first ruler b, the as ∠ of Fig. 3
DCB。
Positions of the second ruler c on the first ruler b is fixed, that is, keeps Q points to overlap with B points, the second ruler c is vertical with CD
State, be rotated down the first ruler b along bevel protractor a and the first ruler b intersection point P, when the first ruler b intersects with camber line CAD,
As B ' points, record the anglec of rotation of now ruler b, the ∠ B ' CD of as Fig. 3.
Then ∠ BCB '=∠ DCB- ∠ B ' CD, because vertebral plate will not be deformed upon during lifting, and ∠ BCB '=∠
D ' CD, i.e. vertebral plate lift angle [alpha], and crack between a door and its frame size needed for art can be obtained using formula DD '=2CD × sin (α/2).
Clinical example：The patient male sex, 45 years old, diagnosis：Stenosis.
Operation：Cervical vertebra C3-C7 section open-door laminoplasty Plastic operations；
By taking cervical vertebra C4 section open-door laminoplasty Plastic operations as an example：Make purpose sagittal diameter, i.e. OB=14mm；
Preoperative combination CT picture of patient measurement draws：CD=15.9mm, ∠ BCB '=∠ DCD '=α=44 °；
Then DD '=2CD × sin (α/2)=11.9mm.Operation uses 12mm steel plates, postoperative to be measured according to CT picture of patient
Its actual sagittal canal diameter is 14.2mm, and clinical effectiveness is good.
Claims (9)
1. a kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement, it is characterised in that：The measurement dress
Put including bevel protractor (a), the first ruler (b) and the second ruler (c)；
The bevel protractor (a) is made up of two orthogonal length rulers and a curved angle chi；
First ruler (b) is installed on bevel protractor (a) top, with the movable connection of bevel protractor (a), the first ruler (b) and angle
Degree chi (a) intersects at intersection point (P) place of two orthogonal length rulers of bevel protractor (a)；
Second ruler (c) is installed on the first ruler (b) top, and the second ruler (c) upper end connects with the first ruler (b) slidingtype
Connect；
The length ruler of the bevel protractor (a) is used to measure the width between vertebral plate (8)；Second ruler (c) is used for positioning simultaneously
Measurement sagittal canal diameter length；First ruler (b) reads arc angle by rotating on bevel protractor (a) around intersection point (P)
Degree chi angle, the scale change for recording curved angle chi lifts angle measuring vertebral plate (8).
2. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 1, its feature exists
In：The meter full scale of two length rulers of the bevel protractor (a) is 0～8cm, and the angular range of curved angle chi is 0～90 °.
3. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 1, its feature exists
In：Two length rulers of the bevel protractor (a) leave the lay edges of 0.5cm.
4. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 1, its feature exists
In：First ruler (b) is the length ruler of 8～10cm, the first ruler (b) and bevel protractor (a) connected end be radius 0.2～
The semicircle shape of 0.5cm.
5. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 1, its feature exists
In：Gap is left in the graduation mark lower section of first ruler (b), and the gap width of the first ruler (b) is 0.5～0.8mm, ruler
B the gap of () is located between 0.5～7.5cm of ruler (b) scale.
6. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 1, its feature exists
In：Second ruler (c) is the length ruler of 8～10cm, and the second ruler (c) is located at the first ruler (b) top, the second ruler
C () is (Q) with the intersection point of the first ruler (b), the upper end of the second ruler (c) is with the first ruler (b) connected end for radius 0.5cm's
Semicircle, the second ruler (c) can be along the gap of the first ruler (b) slidably.
7. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 6, its feature exists
In：The semicircle back side of second ruler (c) arranges thin rounded flakes (d) of the radius for 0.3cm, thin rounded flakes (d) and second
Ruler (c) is connected by radially-directed bar (f)；
First ruler (b) is located between the second ruler (c) and thin rounded flakes (d), and radially-directed bar (f) snaps in first
In ruler (b) gap, slidably and rotate in gap.
8. posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement as claimed in claim 1, its feature exists
In：First ruler (b) is fixed with bevel protractor (a) using rivet, the first ruler (b) can around rivet on bevel protractor (a) from
By rotating.
9. the posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement described in claim 1, it is characterised in that：
The bevel protractor (a), the first ruler (b), the second ruler (c) and thin rounded flakes (d) adopt plastic transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611209542.5A CN106643368B (en) | 2016-12-23 | 2016-12-23 | A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611209542.5A CN106643368B (en) | 2016-12-23 | 2016-12-23 | A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106643368A true CN106643368A (en) | 2017-05-10 |
| CN106643368B CN106643368B (en) | 2018-05-04 |
Family
ID=58827443
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611209542.5A Expired - Fee Related CN106643368B (en) | 2016-12-23 | 2016-12-23 | A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement |
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| CN (1) | CN106643368B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2367476Y (en) * | 1999-03-24 | 2000-03-08 | 李文斌 | Multiple-purpose combined ruler for students in middle school |
| CN2692624Y (en) * | 2004-03-01 | 2005-04-13 | 杨常印 | Cardiothoracic radio measuring ruler for medical x-ray photograph |
| CN101837705A (en) * | 2010-04-16 | 2010-09-22 | 扬州大学 | Multifunctional angulometer |
| CN203089122U (en) * | 2013-03-01 | 2013-07-31 | 任丽平 | Medical vernier scale for X-ray film and CT image measurement |
| CN203107123U (en) * | 2013-03-19 | 2013-08-07 | 尉宏亮 | Examining and measuring ruler for radiographic image |
| CN206300571U (en) * | 2016-12-23 | 2017-07-04 | 中国人民解放军第四军医大学 | A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement |
-
2016
- 2016-12-23 CN CN201611209542.5A patent/CN106643368B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2367476Y (en) * | 1999-03-24 | 2000-03-08 | 李文斌 | Multiple-purpose combined ruler for students in middle school |
| CN2692624Y (en) * | 2004-03-01 | 2005-04-13 | 杨常印 | Cardiothoracic radio measuring ruler for medical x-ray photograph |
| CN101837705A (en) * | 2010-04-16 | 2010-09-22 | 扬州大学 | Multifunctional angulometer |
| CN203089122U (en) * | 2013-03-01 | 2013-07-31 | 任丽平 | Medical vernier scale for X-ray film and CT image measurement |
| CN203107123U (en) * | 2013-03-19 | 2013-08-07 | 尉宏亮 | Examining and measuring ruler for radiographic image |
| CN206300571U (en) * | 2016-12-23 | 2017-07-04 | 中国人民解放军第四军医大学 | A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement |
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| Publication number | Publication date |
|---|---|
| CN106643368B (en) | 2018-05-04 |
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Granted publication date: 20180504 Termination date: 20211223 |