CN205514898U - X line image rectification target for operation navigation - Google Patents
X line image rectification target for operation navigation Download PDFInfo
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- CN205514898U CN205514898U CN201620087727.2U CN201620087727U CN205514898U CN 205514898 U CN205514898 U CN 205514898U CN 201620087727 U CN201620087727 U CN 201620087727U CN 205514898 U CN205514898 U CN 205514898U
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- steel ball
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Abstract
The utility model provides a X line image rectification target for operation navigation, include: near -end steel ball support, distal end steel ball support, go up flitch, flitch, fixing base no. 1, fixing base no. 2, support, hand wheel, ball mounting bracket, stainless steel ball, infrared external reflection bobble down. The utility model discloses can help to discern fast the coordinate direction, look like to rectify to the deformation pattern with corresponding correction NULL, the location result is stable accurate to simple structure can realize swift installation, and convenient to use is swift.
Description
Technical field
The utility model belongs to medical instruments field, is specifically related to a kind of surgical navigational x-ray
Image rectification target.
Background technology
Technology of surgery navigation be now widely used for neurosurgery, spinal surgery, ear-nose-throat department,
The fields such as plastic surgery, one type is based on C-arm X-ray machine, passes through X-ray
Perspective obtains the image document of operative region, and is dumped in image workstation, is formed
Navigational reference image, diagnosis and operation for doctor provide reference.
Due to C-arm x-ray imaging system characteristic inherently, the X ray picture of output
As there is distorting transformation.This distorting transformation makes patient information in image be distorted, impact
The diagnosis of doctor, if this distorting transformation image is directly used in surgical navigational, will affect hand
The location of art apparatus, thus eventually affect the precision of surgical navigational.Therefore, research image
Coordinate transformation relation between respective pixel in distortion correction, i.e. ideal image and distorted image
And gray value mapping relations can be that doctor provides correct two-dimentional reference picture, to shortening operation
Time is significant.
It is corrected the geometry deformation that C-arm X-ray image is intrinsic needing by big in image
Image ideal model is set up and carries out overall situation correction research by the index point data of amount.Therefore,
In C-arm X-ray image, automatically identifying of index point becomes this type of surgical navigational with data extraction
One of basis of technical research.Employing is generally required specially in order to obtain the data of these index points
The truing tool of door, these truing tools are all designed with some form of special sign thing, and one
As be prill or woven wire.C-arm X-ray machine is used to obtain the image of truing tool,
Special sign thing will stay projection, the area of projection and Centre location data i.e. in the picture
For required index point data.And in order to obtain these data, it is necessary to first to special sign
Thing projection in the picture identifies automatically, uses certain method meter the most again
Calculating its area and centre coordinate data, the accuracy of index point data directly affects image and becomes
Shape correction accuracy, and then affect final surgical navigational precision.Mark point is designed with symmetry
Arrangement and asymmetric arrangement, wherein there is the problem hindering reflected image detection in symmetry arrangement.
Therefore, the location of asymmetric arrangement is by more favors.Current testing target there are still and makes
By problem loaded down with trivial details, that Stability and veracity is the highest.
Further, the most domestic testing target the most all using import, the most expensive, and
And the most under one's control, therefore it is badly in need of development and there is independent intellectual property right, use and stablize
Testing target accurately.
Utility model content
For problem above, the utility model provides a kind of surgical navigational X-ray image school
Positive target, can help quick coordinate identification direction, make image procossing more quick and precisely.Additionally,
The utility model testing target simple in construction, it is possible to achieve fast install.
For achieving the above object, the technical solution of the utility model is, a kind of surgical navigational is used
X-ray image testing target, including: near-end steel ball support 1, far-end steel ball support 2, upper flitch
3, blanking plate 4, fixing seat 1, fixing seat 26, support 10, handwheel 12, ball are installed
Frame 15, stainless steel ball 16, infrared external reflection bead 17；
Wherein, described near-end steel ball support 1 is fixed on flitch 3, far-end steel ball support 2
It is fixed on blanking plate 4；It is equipped with blind hole on near-end steel ball support and far-end steel ball support；
Wherein, described upper flitch 3 is connected fixing with blanking plate 4 by support 10；
Described support 10 has multiple；
Described fixing seat 1 and fixing seat 26 are arranged on flitch 3；
Described handwheel 12 is arranged on fixing seat one；
Described upper flitch and blanking plate are provided with ball installing rack 15, infrared external reflection bead 17
In ball installing rack；
Described stainless steel ball 16 is embedded in near-end steel ball support and the blind hole of far-end steel ball support
In.
Described blind hole is the hole not penetrated through.
Preferably, described surgical navigational X-ray image testing target also includes trimmer 7, limit
Bit slice 8, adjustment pad 9；Described upper flitch is provided with 3 fixing seats, including 1 fixing seat
One and 2 fixing seats two；Wherein, fixing seat one is sequentially connected with adjustment pad and trimmer,
2 fixing seats two are connected with respective banking stop respectively.
Wherein, described near-end steel ball support there is tapered blind hole 92, including 89
Φ 3mm tapered blind hole and 3 Φ 5mm tapered blind hole, wherein 89 tapered blind hole are net
Lattice array arrangement, ranks spacing is 20mm；In each Φ 3mm tapered blind hole each embedding one
S Φ 3mm stainless steel ball, in each Φ 5mm tapered blind hole, each embedding S Φ 5mm is not
Rust steel ball pearl.
4 Φ 5mm tapered blind hole are had, in each tapered blind hole on described far-end steel ball support
Each embedding S Φ 5mm stainless steel ball.
Wherein 3 S Φ 5mm stainless steel balls of near-end steel column support and far-end steel ball support
4 S Φ 5mm stainless steel balls the most asymmetric on the change in coordinate axis direction of three, space, and
3 S Φ 5mm stainless steel ball P of near-end steel ball support1、P2、P3Prop up with far-end steel ball
4 S Φ 5mm stainless steel ball D of frame1、D2、D3、D4Between meet following geometry about
Bundle relation:
1、0.9≤|D2D1|/|P1D1|≤1.1；
2、0.9≤|D3P2|/|D4P2|≤1.1；
3、85°≤angle(P2D1, P3D2)≤95°；4.0.9≤|P3D2|/|D3P3|≤1.1；
5、0.9≤|D3D2|/|D4D3|≤1.1；
6、85°≤angle(D3D2, D4D3)≤95°；
7、85°≤angle(P3D1, D3P3)≤95°；
Wherein, upper flitch and blanking edges of boards are provided with optical alignment label, optical alignment mark
Note thing is infrared external reflection bead, passes through ball between infrared external reflection bead and upper flitch and blanking plate
Installing rack connects.
In the utility model, described near-end steel ball support, far-end steel ball support are circular plate type,
A diameter of 300mm, thickness is 4mm.
The utility model surgical navigational X-ray image testing target, upper flitch and blanking plate use
Aluminum alloy materials makes, and near-end steel ball support and far-end steel ball support use pmma material
Make.
The utility model can help quick coordinate identification direction, makes image processing algorithm more
Quick and precisely.And, the utility model simple in construction, it is possible to achieve fast install, use
Convenient and swift.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.In figure, 1: near-end steel ball support, 2:
Far-end steel ball support, 3: upper flitch, 4: blanking plate, 5: fixing seat one, 6: fixing seat
Two, 7: trimmer, 8: banking stop, 9: adjust pad, 10: support, 12: handwheel,
15: ball installing rack, 16: stainless steel ball, 17: infrared external reflection bead.
Fig. 2 is the distribution signal of the stainless steel ball of near-end steel ball support, far-end steel ball support
Figure.P1、P2、P3For 3 S Φ 5mm stainless steel balls on near-end steel ball support, D1、
D2、D3、D4For 4 S Φ 5mm stainless steel balls on far-end near-end steel ball support.
Detailed description of the invention
For the ease of to understanding of the present utility model, below in conjunction with accompanying drawing to the utility model
It is further explained explanation.
As it is shown in figure 1, a kind of surgical navigational X-ray image testing target, including near-end steel ball
Support 1, far-end steel ball support 2, upper flitch 3, blanking plate 4, wherein near-end steel ball support 1
It is screwed respectively in upper flitch 3 and blanking plate 4 with far-end steel ball support 2；If the Heavenly Stems and Earthly Branches
Support 10, wherein support 10 is connected fixing by screw with upper flitch 3, blanking plate 4；3
Fixing seat, including 1 fixing seat 1 and 2 fixing seats 26, fixing seat 1 is with fixing
Seat 26 is all screwed in upper flitch 3；Adjust pad 9, trimmer 7, by leading
Bar screw is sequentially connected to fixing seat 1；Banking stop 8 is screwed in fixing seat 26；
Handwheel 12 is connected with fixing seat 1 and adjustment pad 9；Wherein infrared external reflection bead 17 with
Connected by ball installing rack 15 between upper flitch 3 and blanking plate 4.
Wherein, near-end steel ball support and far-end steel ball support are according to the distributing position shown in Fig. 2
It is provided with blind hole, each of which blind hole is both provided with isodiametric stainless steel ball 16.
Blind hole refers to the hole not penetrated through, tapered, the most up big and down small, facilitates stainless steel ball embedding
In wherein.
Wherein, 3 Φ 5mm tapered blind hole of near-end steel column support and far-end steel ball support
4 Φ 5mm tapered blind hole are distributed according to the layout of Fig. 2, and it is at three, space coordinate
On direction of principal axis the most asymmetric, and 3 Φ 5mm tapered blind hole P of near-end steel ball support1、P2、
P3With 4 Φ 5mm tapered blind hole D of far-end steel ball support1、D2、D3、D4Between meet
Following geometrical-restriction relation:
1、0.9≤|D2D1|/|P1D1|≤1.1；
2、0.9≤|D3P2|/|D4P2|≤1.1；
3、85°≤angle(P2D1, P3D2)≤95°；4.0.9≤|P3D2|/|D3P3|≤1.1；
5、0.9≤|D3D2|/|D4D3|≤1.1；
6、85°≤angle(D3D2, D4D3)≤95°；
7、85°≤angle(P3D1, D3P3)≤95°；
Each embedding S Φ 3mm stainless steel ball, each Φ in each Φ 3mm tapered blind hole
Each embedding S Φ 5mm stainless steel ball in 5mm tapered blind hole.Upper flitch and blanking edges of boards
Being provided with optical alignment label, optical alignment label is infrared external reflection bead, infrared instead
Penetrate and be connected by ball installing rack between bead with upper flitch and blanking plate.Ball installing rack and infrared
Quantity and the position of reflection bead can adjust according to the difference of the C-arm used.
Described near-end steel ball support, far-end steel ball support are circular plate type, a diameter of 300mm,
Thickness is 4mm.Upper flitch and blanking plate use aluminum alloy materials to make, near-end steel ball support
Pmma material is used to make with far-end steel ball support.
Specifically used method of the present utility model is: first, hanged by radioscopic image testing target
Hanging in the X-ray receiving surface of C-arm, adjusting handle carries out being locked and is fixed by testing target
In C-arm；Control C-arm shooting radioscopic image testing target, obtain this testing target
Fluoroscopy images；The fluoroscopy images of the testing target obtained is split；Prop up according to near-end steel ball
The geometry constraint conditions on frame, far-end steel ball support set S Φ 5mm stainless steel ball is complete
Become and all identify；Utilize 3 S Φ 5mm stainless steel balls on near-end steel ball support with imitative
Penetrate and be transformed to model and be calculated vector field；Above-mentioned vector field is utilized to combine thin-plate spline interpolation
Algorithm eliminates radioscopic image distortion effect；And then reference linear camera utilizes DLT algorithm meter
Calculation obtains projection matrix and carries out C arm demarcating correction.
The infrared external reflection bead that upper flitch, blanking plate are arranged plays the effect of mark, fixed in art
Level sensor is by following the trail of the locus of infrared external reflection bead positioning correcting target.
The utility model uses the mark point of asymmetric arrangement, and wherein stainless steel ball location
Point has certain geometry constraint conditions, can more accurately complete in conjunction with this constraints
Trimming process.
The utility model can help quick coordinate identification direction, ties with corresponding bearing calibration
Closing and be corrected deformation pattern, image processing algorithm is more quick and precisely.And, this reality
Simple with new structure, it is possible to achieve fast to install, convenient to use.
The above, only the utility model preferably detailed description of the invention, but this practicality is new
The protection domain of type is not limited thereto.
Claims (8)
1. a surgical navigational X-ray image testing target, it is characterized in that, described surgical navigational X-ray image testing target includes: near-end steel ball support, far-end steel ball support, upper flitch, blanking plate, fixing seat one, fixing seat two, support, handwheel, ball installing rack, stainless steel ball, infrared external reflection bead；
Described near-end steel ball support is fixed on flitch, and far-end steel ball support is fixed on blanking plate；It is equipped with blind hole on near-end steel ball support and far-end steel ball support；
Connected by support between described upper flitch and blanking plate；
Described fixing seat one and fixing seat two are arranged on flitch；
Described handwheel is arranged on fixing seat one；
Described upper flitch and blanking plate are provided with ball installing rack, and infrared external reflection bead is positioned in ball installing rack；
Described stainless steel ball is embedded in the blind hole of near-end steel ball support and far-end steel ball support.
Surgical navigational X-ray image testing target the most according to claim 1, it is characterised in that described surgical navigational X-ray image testing target also includes trimmer, adjusts pad, banking stop；Described upper flitch is provided with 3 fixing seats, including 1 fixing seat one and 2 fixing seats two；Wherein, fixing seat one is sequentially connected with adjustment pad and trimmer, and 2 fixing seats two are connected with respective banking stop respectively.
Surgical navigational X-ray image testing target the most according to claim 1, it is characterised in that have tapered blind hole 92 on described near-end steel ball support, including 89 Φ 3mm tapered blind hole and 3 Φ 5mm tapered blind hole.
Surgical navigational X-ray image testing target the most according to claim 3, it is characterised in that 89 Φ 3mm tapered blind hole on described near-end steel ball support are grid array arrangement, and ranks spacing is 20mm.
Surgical navigational X-ray image testing target the most according to claim 3, it is characterised in that each embedding S Φ 3mm stainless steel ball in described near-end steel ball support each Φ 3mm tapered blind hole, each embedding S Φ 5mm stainless steel ball in each Φ 5mm tapered blind hole.
Surgical navigational X-ray image testing target the most according to claim 1, it is characterised in that have 4 Φ 5mm tapered blind hole on described far-end steel ball support, each embedding S Φ 5mm stainless steel ball in each tapered blind hole.
Surgical navigational X-ray image testing target the most according to claim 3, it is characterized in that, 3 S Φ 5mm stainless steel balls of described near-end steel ball support and 4 S Φ 5mm stainless steel balls of far-end steel ball support are the most asymmetric on the change in coordinate axis direction of three, space, and meet following geometrical-restriction relation between 3 S Φ 5mm stainless steel ball P1, P2, P3 of near-end steel ball support and far-end steel ball support 4 Φ 5mm stainless steel ball D1, D2, D3, D4:
0.9≤|D2D1|/|P1D1|≤1.1；
0.9≤|D3P2|/|D4P2|≤1.1；
85°≤angle(P2D1, P3D2)≤95°；0.9≤|P3D2|/|D3P3|≤1.1；
0.9≤|D3D2|/|D4D3|≤1.1；
85°≤angle(D3D2, D4D3)≤95°；
85°≤angle(P3D1, D3P3)≤95°。
Surgical navigational X-ray image testing target the most according to claim 1, it is characterised in that the infrared external reflection bead on described ball installing rack is optical alignment label.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087727.2U CN205514898U (en) | 2016-01-28 | 2016-01-28 | X line image rectification target for operation navigation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620087727.2U CN205514898U (en) | 2016-01-28 | 2016-01-28 | X line image rectification target for operation navigation |
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| Publication Number | Publication Date |
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| CN205514898U true CN205514898U (en) | 2016-08-31 |
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| CN201620087727.2U Active CN205514898U (en) | 2016-01-28 | 2016-01-28 | X line image rectification target for operation navigation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174343A (en) * | 2017-06-26 | 2017-09-19 | 南京普爱医疗设备股份有限公司 | Three-dimensional orthopedic surgical navigational spatial registration method based on infrared optics alignment system |
-
2016
- 2016-01-28 CN CN201620087727.2U patent/CN205514898U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174343A (en) * | 2017-06-26 | 2017-09-19 | 南京普爱医疗设备股份有限公司 | Three-dimensional orthopedic surgical navigational spatial registration method based on infrared optics alignment system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |