CN206300571U - A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement - Google Patents
A kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement Download PDFInfo
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- CN206300571U CN206300571U CN201621427581.8U CN201621427581U CN206300571U CN 206300571 U CN206300571 U CN 206300571U CN 201621427581 U CN201621427581 U CN 201621427581U CN 206300571 U CN206300571 U CN 206300571U
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- ruler
- door
- bevel protractor
- frame size
- posterior cervical
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Abstract
The utility model discloses a kind of Novel medical measurement apparatus, it is related to crack between a door and its frame size measurement in a kind of posterior cervical open-door laminoplasty Plastic operation, the device is combined by a quadrant chi and two rulers.Patient's preoperative cervical vertebra CT images are combined when using, according to surgical target canalis spinalis mark sagittal, the angle lifted needed for vertebral plate in art is measured, then crack between a door and its frame size needed for art is calculated using supporting formula, it uses convenient and simple for operation.
Description
Technical field
The utility model belongs to medical measurement device field, and in particular to a kind of posterior cervical open-door laminoplasty expands shaping
Art crack between a door and its frame 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 O points are met at CD, and A points are met at arc CD, 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
It is 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 lifted for vertebral plate
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 small, the effective percentage and success rate of operation can be greatly improved.And clinically rely solely on patient for the size opened the door at this stage
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 cause its shape also can because of its state of an illness difference for same sections canalis spinalis
There is very big difference.So, the simple size that crack between a door and its frame in posterior cervical open-door laminoplasty Plastic operation is judged by experience 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, the purpose of this utility model is, there is provided a kind of measurement apparatus, the measurement
Device can simply be measured on the preoperative cervical vertebra CT images of patient, accurately estimate the enabling of the sagittal canal diameter for wanting to reach
Size, using simple to operate effective, so as to carry out personalized operation for different cervical vertebral segments, reaches the mesh of accurate operation
's.
To realize above-mentioned target, the utility model uses 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 rotates by around intersection point P on bevel protractor, reads curved angle chi angle, records arc angle
The scale change for spending chi lifts angle measuring vertebral plate.
Specifically, two meter full scales of length ruler of the bevel protractor are 0~8cm, the angular range of curved angle chi
It is 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, 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, 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, and the upper end of the second ruler is the semicircle shape of radius 0.5cm, second with the first ruler connected end
Ruler can be along the gap of the first ruler slidably.
Further, second ruler the semicircle back side set 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
In snapping in the first ruler gap to bar, slidably and rotated 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 use plastic transparent material.
Compared to prior art, technique effect of the present utility model is：
Posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement of the present utility model, can combine patient
Preoperative cervical vertebra CT images, measure related data, by length and measurement result (vertebral plate raising height, the canalis spinalis of purpose sagittal diameter
Transverse process 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,
Using the accurate survey calculation enabling size of easy to operate, science, the effective percentage and success rate of operation can be greatly improved, had
Wide medical science prospect.
Brief description of the drawings
Fig. 1 is the overall structure diagram of measurement apparatus of the present utility model；
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
Application method of the present utility model 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, C, D point are connected, CD is vertebral plate width.Center line Y is, O points are met at CD.
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, B ' is intersected at arc CAD.Because vertebral plate 8 does not have during raising
There is deformation, then ∠ BCB '=∠ DCD ', CD=CD '.
The utility model provides a kind of posterior cervical open-door laminoplasty Plastic operation crack between a door and its frame size measurement, a kind of
Posterior cervical 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 the second ruler c.
The width and vertebral plate that bevel protractor a of the present utility model is used to measure between vertebral plate 8 lift angle, second ruler
B is used to measure sagittal canal diameter, the measurement work of the first ruler b fit angles chi and the second ruler c.
Bevel protractor a of the present utility model is made up of two orthogonal length rulers and a curved angle chi；The angle
Two meter full scales of length ruler for spending chi are 6cm, and the angular range of curved angle chi is 0~90 °, two length of bevel protractor
Chi leaves the lay edges of 0.5cm.
First ruler b of the present utility model is 8 length ruler, and the first ruler b is located at bevel protractor a tops, the first ruler b with
Bevel protractor a connecting places are the semicircle shape of radius 0.5cm, and the first ruler b and bevel protractor a is fixed on two of bevel protractor using rivet
At the intersection point P of orthogonal 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 it is the thin rounded flakes d of 0.3cm that the semicircle back side of the second ruler c sets radius, and thin rounded flakes d is 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 rotated in gap.
For convenience of survey measurements, bevel protractor a of the invention, ruler b, ruler c and thin rounded flakes d use 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 be overlapped 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 lines 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 be overlapped 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 points 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：Patient male, 45 years old, diagnosis：Stenosis.
Operation：Cervical vertebra C3-C7 sections of open-door laminoplasty Plastic operation；
By taking cervical vertebra C4 sections of open-door laminoplasty Plastic operation 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 two intersection point of orthogonal length ruler (P) places 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 to position simultaneously
Measurement sagittal canal diameter length；First ruler (b) rotates by around intersection point (P) on bevel protractor (a), reads arc angle
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：Two meter full scales of length ruler of the bevel protractor (a) are 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 the half of radius 0.5cm with the first ruler (b) connected end
Circle, 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：It is the thin rounded flakes (d) of 0.3cm, thin rounded flakes (d) and second that the semicircle back side of second ruler (c) sets radius
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 rotated 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) use plastic transparent material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427581.8U CN206300571U (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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427581.8U CN206300571U (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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| CN206300571U true CN206300571U (en) | 2017-07-04 |
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| CN201621427581.8U Expired - Fee Related CN206300571U (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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643368A (en) * | 2016-12-23 | 2017-05-10 | 中国人民解放军第四军医大学 | Measurement device for door slot size of posterior cervical single-door expansive laminoplasty |
-
2016
- 2016-12-23 CN CN201621427581.8U patent/CN206300571U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643368A (en) * | 2016-12-23 | 2017-05-10 | 中国人民解放军第四军医大学 | Measurement device for door slot size of posterior cervical single-door expansive laminoplasty |
| CN106643368B (en) * | 2016-12-23 | 2018-05-04 | 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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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20181223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |