CN207980187U - A kind of radiatherapy grid device and radiotherapy unit - Google Patents
A kind of radiatherapy grid device and radiotherapy unit Download PDFInfo
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- CN207980187U CN207980187U CN201720569490.6U CN201720569490U CN207980187U CN 207980187 U CN207980187 U CN 207980187U CN 201720569490 U CN201720569490 U CN 201720569490U CN 207980187 U CN207980187 U CN 207980187U
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Abstract
The utility model discloses a kind of radiatherapy grid device and radiotherapy units, including：Two layers of grating blade of upper layer grating assembly and lower layer's grating assembly, the upper layer grating assembly includes horizontal two groups of blades being arranged oppositely with lower layer's grating assembly, two groups of blades respectively do horizontal reciprocating movement by driving element driving, and the quantity of the grating blade of upper layer and lower layer grating assembly is identical.The creative setting by double-layer grating device, it is divided into two groups of arrangements up and down equal to by motor, the space of arrangement increases whole one times, blade is accomplished thinner, and when upper layer and lower layer blade, which misplaces, arranges, by the fitting twice to lesion shape, the ladder-like broken line of matched curve is shorter closeer, and fitting precision greatly improves.
Description
Technical field
The utility model is related to a kind of Medical Devices, more particularly to radiatherapy grid device and radiotherapy unit.
Background technology
Radiotherapy unit uses calimator in treatment in order to reduce injury of the ray to health tissues as far as possible at present
Or grating blade system be fitted lesion shape, prevent ray to lesion outside region be irradiated, since calimator can not adjust,
It needs to carry out one-to-one matching manufacture, high cost, and grating blade can carry out real-time control, be fitted arbitrary shape, no
With one-to-one separately fabricated limit light device again, therefore unit cost of use substantially reduces, but since each blade will
Be independently connected a motor, is restricted by motor size, therefore the thickness of blade is limited, can not accomplish it is thinner, and it is thicker
Precision of the blade in fitted shapes it is often barely satisfactory, also insoluble negative effect is caused to accurately treating, existing
Have in the other embodiment of technology, calimator and grating blade are applied in combination, substantive solution is not above-mentioned asks yet
Topic.
Utility model content
To solve the above problems, the purpose of this utility model is to provide a kind of radiatherapy grid equipment.
In order to achieve the above objectives, the technical solution of the utility model is：
A kind of radiatherapy grid device, including：Two layers of grating blade of upper layer grating assembly and lower layer's grating assembly, institute
Upper layer grating assembly is stated with lower layer's grating assembly including horizontal two groups of grating blades being arranged oppositely, two groups of blades are divided equally
Horizontal reciprocating movement is not done by driving element driving, the quantity of the grating blade of upper layer and lower layer grating assembly is identical.
The creative setting by double-layer grating device is divided into two groups of arrangements up and down, the space of arrangement equal to by motor
Increase whole one times so that blade can accomplish it is thinner, and when upper layer and lower layer blade misplace arrange when, by twice to disease
The ladder-like broken line of the fitting of stove shape, matched curve is shorter closeer, and fitting precision greatly improves.
Further, the grating blade in the upper layer grating assembly is parallel with the grating blade of lower layer grating assembly sets
It sets, the gap between the grating blade of lower layer's grating assembly is respectively positioned on the bottom surface of the correspondence grating blade of upper layer grating assembly
View field in.
Gap between the bottom surface covering lower leave of upper layer grating blade, solves the problems, such as to leak between piece well to penetrate, because
This can cancel step vane used by anti-leak-stopping is penetrated and blade setting raised line and groove, can further accomplish blade
Thinner, fitted shapes are more accurate, while also avoiding interlobate friction, relatively reliable and low noise.
Further, the grating blade of the horizontal axis of the grating blade of the upper layer grating assembly and lower layer's grating assembly
Horizontal axis be mutually perpendicular to.
The movement locus of levels grating blade is vertical, and fitted shapes are finer accurate after combining in this way.
Further, the geometric center of the upper layer grating assembly and the geometric center of lower layer's grating assembly are respectively at two
With on the vertical line of horizontal plane.
According to this standard arrangement, anti-leak-stopping can be taken into account and penetrated.
Further, the radiatherapy grid device is additionally provided with vane nose position control, controls upper layer
Before two groups of grating blades in gap and lower layer's grating assembly that two groups of grating vane noses of grating assembly are formed after contacting with each other
The gap that end is formed after contacting with each other misplaces always.
In fitted shapes, the blade of both sides mutually touches closure, and intermediate region blade detaches, to form fitting
Hole, blade still remain gap after touching, and the leakage that this gap generates penetrates the prior art and do not provide solution, does not also have
Relevant technical inspiration, the dystopy that rear gap is touched using twi-tier blade of the technical program creativeness, to effective solution
Vane nose leaks the problem penetrated.
Further, the grating blade of the upper layer grating assembly by intermediate raster blade to right side grating blade
The area in right side sideline, upper layer grating blade covering lower layer grating blade is gradually increased, the setting of left side blade mirror image.
What leakage between can more optimizing piece of arranging in this way was penetrated evades effect.
Further, the grating blade of the upper layer grating assembly by intermediate raster blade to the grating blade of both sides
Thickness be gradually reduced.
Further, the vane nose position control includes：
Vane nose range counter corresponds to the distance of vane nose for monitoring lower layer's grating assembly in real time, works as data
When being zero, then show that this mutually touches vane nose closure；
Central controller receives the data that vane nose range counter transmits, when certain group vane nose distance is zero,
Then into upper layer grating assembly, a pair of of blade of the corresponding position in top sends out instruction, this executes to issue orders blade：
First, this touches closure to vane nose and keeps；
Second, adjust that two blades move forward apart from accounting so that the seam formed after the touching of two vane noses
Front end gap misplaces between gap and lower leave, i.e., behind the gap and vane nose contact between the blade of described lower layer's grating assembly
The gap of formation is respectively positioned on the lower section of the bottom surface of the correspondence blade of upper layer grating assembly, and the bottom surface of as upper layer grating blade is hidden
It covers.
The utility model also provides a kind of radiotherapy unit, including the radiatherapy grid dress that right is described above
It sets.
Description of the drawings
Fig. 1 is the structural schematic diagram of grating device；
Fig. 2 and Fig. 3 is a kind of schematic diagram of the double-layer grating blade side of embodiment of the utility model；
Fig. 4 is the schematic diagram of the utility model another embodiment upper layer and lower layer grating leaf position relationship；
Fig. 5 is the position relationship schematic diagram in upper layer and lower layer grating blade front end gap after both sides blade touches
In figure：
1, blade 2, motor 4, adapter 51, upper layer blade 52, upper layer motor 53, upper layer vane nose gap 61, lower layer
Blade 62, lower layer's motor 63, lower leave front end gap
Specific implementation mode
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the vertical view of single layer grating assembly, is shown with blade 1, motor 2 in figure and installs grating assembly
Adapter on radiotherapy equipment host.The utility model is that have the double-deck similar structures, upper layer and lower layer grating assembly
The blade arrangement relationship of side is as shown in Figures 2 and 3, this is the one of which embodiment of the utility model：
A kind of radiatherapy grid device, including：Two layers of grating blade of upper layer grating assembly and lower layer's grating assembly, institute
State upper layer grating assembly and lower layer's grating assembly and include horizontal two groups of blades being arranged oppositely, two groups of blades respectively by
Horizontal reciprocating movement is done in driving element driving.As shown in Figures 2 and 3, upper layer grating assembly has upper layer blade 51, upper layer motor
52, lower layer's grating assembly has lower leave 61, lower layer's motor 62.The quantity phase of the grating blade of upper layer and lower layer grating assembly
Together.
The creative setting by double-layer grating device is divided into two groups of arrangements up and down, the space of arrangement equal to by motor
Increase whole one times so that blade can accomplish it is thinner, and when upper layer and lower layer blade misplace arrange when, even if vane thickness
Like the prior art with quantity, but by being superimposed twice to the fitting of lesion shape, it is fitted the rank of the boundary curve of launched field
Every straight line in the projection of scalariform broken line all can be shorter closeer, and fitting precision greatly improves.
In addition, it is understood that, it is assumed that the overall width of general grating blading is 51mm, blade height generally 70mm with
Interior, in the prior art, minimum vane thickness is 3mm at present, therefore 17 blades (ignoring piece spacing) in total, and minimum at present
Motor diameter be 10mm, need 17 motors, limited by 51mm width, generally often row arrangement 4, then need arrange 5 rows electricity
Machine (4x5=20, the 5th motor of behavior 1).If vane thickness drops to 1.5mm, blade quantity 34, number of motors increases
It doubles, motor needs to arrange 9 rows, does not calculate motor spacing, highly desirable 90mm alreadys exceed the 70mm height models of blade
It encloses, can not apply.And double-layer grating blade design is used, and when levels blade parallel arrangement, then when vane thickness is accomplished
When 1.5mm, since gap can mutually be covered between the piece of upper layer and lower layer blade, piece spacing can be amplified, such as by piece
Spacing is amplified to 1mm, then every layer is 20 per side blade quantity, and every layer needs 4x4 row motor arrangements per lateral lobe piece, thus
As it can be seen that this programme thoroughly solves the limitation of the conditions such as overall dimensions, vane thickness, number of motors, blade can be accomplished existing
There is a half thickness of technology, even more thin, utility model people has accomplished vane thickness 1.25mm at present.Blade pitgh can root
Adjustment is optimized according to needs, controls the relationship between the control leaked and penetrated between vane thickness and blade quantity and piece, so as to
Meet leakage between the boundary projection fineness of fitting launched field and piece and penetrates safety coefficient.In some specific embodiments, blade pitgh
Using 0.5mm, every layer measures integer 26 per lateral lobe the piece number, and when vane thickness is 1.5mm, every layer of grating assembly width is
25x (1.5+0.5)+1.5=51.5mm, motor are configured to 7 rows, wherein every row 4 of 6 rows, other a line 2.Upper layer and lower layer leaf
Piece reaches 52 per side blade amt, substantially increases the fine degree of fitting launched field boundary drop shadow curve.
In some embodiments it is possible to consider upper layer and lower layer grating assembly carrying out vertical cloth according to its mobile axis
It sets, if arrangement is proper, leaf position control is proper, and it is bent can also periodically to improve the projection of fitting launched field boundary in vane thickness one
The fineness of line.
In practical applications, in some embodiments, by the blade and lower layer's grating group in the upper layer grating assembly
The blade of part is arranged in parallel, and the gap between the blade of lower layer's grating assembly is respectively positioned on the correspondence blade of upper layer grating assembly
Bottom surface lower section, the bottom surface of as upper layer grating blade is covered.The bottom surface of upper layer grating blade covers lower leave in this way
Between gap, solve the problems, such as to leak between piece well to penetrate, thus can cancel step vane used by anti-leak-stopping is penetrated and
Raised line and groove is arranged in blade, can further accomplish blade thinner, and fitted shapes are more accurate, while also avoiding blade
Between friction, relatively reliable and low noise.This is also referred in way of example above-mentioned.
In some embodiments, the correspondence arrangement of leaf position can be carried out according to following principles：The upper layer light
The right edge of the blade of grid component is aligned with the left side edge of the blade of lower layer grating assembly or the blade of upper layer grating assembly
Left side edge be aligned with the right edge of the blade of lower layer grating assembly.As shown in Figure 4.
When blade accomplishes very thin, arrange according to this standard, simpler convenience.
In some embodiments, the correspondence arrangement of leaf position can be carried out according to following principles：, the upper layer light
Slit centers line between bottom center's line of the blade of grid component and the blade of lower layer grating assembly is aligned.As shown in Figure 3.
According to this standard arrangement, while anti-leak-stopping can be taken into account penetrating, interlobate interval is arranged it is slightly wider,
Facility is provided for arrangement motor.
In some embodiments, the correspondence arrangement of leaf position can be carried out according to following principles：The upper layer light
The blade of grid component by intermediate blade to the right side sideline of right side blade, from the left side of the blade with lower layer grating assembly
It is gradually moved to blade centreline direction along alignment, i.e. the area of upper layer blade covering lower leave is gradually increased, left side blade
Mirror image is arranged.
What leakage between can more optimizing piece of arranging in this way was penetrated evades effect.
In some embodiments, the radiatherapy grid device is additionally provided with vane nose position control, control
Two groups of gap and lower leave component that two groups of vane nose, that is, free ends of upper layer blade assembly processed are formed after contacting with each other
The dislocation of gap that vane nose, that is, free end is formed after contacting with each other, i.e., gap between the blade of described lower layer's grating assembly and
The gap formed after vane nose contact is respectively positioned on the lower section of the bottom surface of the correspondence blade of upper layer grating assembly, as upper layer grating
It is covered the bottom surface of blade.As shown in Figure 5.
In fitted shapes, the blade of both sides mutually touches closure, and intermediate region blade detaches, to form fitting
Hole, blade still remain gap after touching, grating assembly two layers of blade free end in upper layer forms upper layer vane nose after touching
Two layers gap 53, lower layer's grating assembly of blade free end form lower leave front end gap 63 after touching.
The leakage that this gap generates penetrates the prior art and does not provide solution, also without relevant technical inspiration, this skill
The dystopy that rear gap is touched using twi-tier blade of art scheme creativeness, to which effective solution vane nose leaks the difficulty penetrated
Topic.
In some embodiments, the vane nose position control includes：
Vane nose range counter corresponds to the distance of vane nose for monitoring lower layer's grating assembly in real time, works as data
When being zero, then show that this mutually touches vane nose closure；
Central controller receives the data that vane nose range counter transmits, when certain group vane nose distance is zero,
Then into upper layer grating assembly, a pair of of blade of the corresponding position in top sends out instruction, this executes to issue orders blade：
First, this touches closure to vane nose and keeps；
Second, adjust that two blades move forward apart from accounting so that the seam formed after the touching of two vane noses
Front end gap misplaces between gap and lower leave, i.e., behind the gap and vane nose contact between the blade of described lower layer's grating assembly
The gap of formation is respectively positioned on the lower section of the bottom surface of the correspondence blade of upper layer grating assembly, and the bottom surface of as upper layer grating blade is hidden
It covers.
Under normal circumstances, after lower layer's grating assembly carries out form fit according to lesion shape, the leaf for touching closure is needed
Piece be usually it is each advance 50% distance, i.e., vane nose touch be closed formed gap be located at lower layer's grating assembly both sides blade
Between center line on, then, when we set every layer of grating assembly both sides blade and are respectively positioned on the initial position of both sides, corresponding leaf
The distance between piece is D, as long as the ratio that the corresponding blade in control upper layer grating assembly advances is not 50%D ratio 50%D,
Closure is touched in the front end gap formed after may make the vane nose of upper layer grating assembly both sides to touch with lower leave front end
The front end gap formed afterwards misplaces, i.e., is formed behind the gap and vane nose contact between the blade of described lower layer's grating assembly
Gap is respectively positioned on the lower section of the bottom surface of the correspondence blade of upper layer grating assembly, and the bottom surface of as upper layer grating blade is covered.This
A advance ratio can be set as needed, such as the both sides blade advance 40%D and 60%D respectively of upper layer grating assembly, or
The arbitrary proportions such as person 45%D and 55%D, can reach upper layer grating assembly both sides vane nose touch after the front end that is formed
The purpose of the front end gap dislocation formed after closure is touched in gap with lower leave front end, and only this ratio is close to 50% ratio
When 50%, more save the time, it is more efficient.
In other embodiments, it can also be controlled with the time relay, because covering entirely distance D per lateral lobe piece
Time be certain, be set as T, therefore, lower layer's grating assembly both sides need the blade that is closed to run 1/2T, i.e., respectively walk half
Distance touches closure, and corresponding upper layer both sides blade then may be set to each operation 3/5T and 2/5T, can also be other arbitrary
Time equally reaches above-mentioned purpose, to ensure that blade touches the reliability of closure, can increase checking sensor or position switch/
In place whether sensor confirm the blade.
In some embodiments, the grating blade of the upper layer grating assembly by intermediate raster blade to the light of both sides
The thickness of grid blade is gradually reduced.It is finer in the two side areas of fitted shapes in this way, when levels grating blade mutually hangs down
After in line cloth, finer form fit can be obtained.
The utility model also provides a kind of radiotherapy unit, including the radiatherapy grid dress that right is described above
It sets.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (9)
1. a kind of radiatherapy grid device, which is characterized in that including：Two layers of light of upper layer grating assembly and lower layer's grating assembly
Grid blade, two groups of grating blades that the upper layer grating assembly is arranged oppositely including level with lower layer's grating assembly, described two
Group blade respectively does horizontal reciprocating movement, the quantity phase of the grating blade of upper layer and lower layer grating assembly by driving element driving
Together.
2. radiatherapy grid device according to claim 1, which is characterized in that the light in the upper layer grating assembly
Grid blade and the grating blade of lower layer's grating assembly are arranged in parallel, and the gap between the grating blade of lower layer's grating assembly is equal
In the view field of the bottom surface of the correspondence grating blade of upper layer grating assembly.
3. radiatherapy grid device according to claim 1, which is characterized in that the grating of the upper layer grating assembly
The horizontal axis of blade and the horizontal axis of the grating blade of lower layer grating assembly are mutually perpendicular to.
4. radiatherapy grid device according to claim 2, which is characterized in that the geometry of the upper layer grating assembly
The geometric center of center and lower layer's grating assembly is respectively on two vertical lines with horizontal plane.
5. radiatherapy grid device according to claim 2, which is characterized in that the radiatherapy grid device
It is additionally provided with vane nose position control, two groups of grating vane noses of control upper layer grating assembly are formed after contacting with each other
Gap and lower layer grating assembly two groups of grating vane noses contact with each other after the gap that is formed misplace always.
6. radiatherapy grid device according to claim 2, which is characterized in that the grating of the upper layer grating assembly
Blade covers lower layer's grating blade by intermediate raster blade to the right side sideline of right side grating blade, upper layer grating blade
Area is gradually increased, the setting of left side blade mirror image.
7. radiatherapy grid device according to claim 2, which is characterized in that the grating of the upper layer grating assembly
The thickness of grating blade of the blade by intermediate raster blade to both sides is gradually reduced.
8. radiatherapy grid device according to claim 5, which is characterized in that the vane nose position control dress
Set including：
Vane nose range counter corresponds to the distance of grating vane nose for monitoring lower layer's grating assembly in real time, works as data
When being zero, then show that this mutually touches closure to grating vane nose；
Central controller receives the data that grating vane nose range counter transmits, when certain group grating vane nose distance is
When zero, then into upper layer grating assembly, a pair of of grating blade of the corresponding position in top sends out instruction, this executes blade following
Order：
First, this touches closure to grating vane nose and keeps；
Second, adjust this to grating blade move forward apart from accounting so that the seam formed after the touching of two vane noses
Front end gap misplaces between gap and lower layer's grating blade.
9. a kind of radiotherapy unit, which is characterized in that including any radiatherapy grid dresses of claim 1-8
It sets.
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| CN201720569490.6U CN207980187U (en) | 2017-05-22 | 2017-05-22 | A kind of radiatherapy grid device and radiotherapy unit |
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| CN201720569490.6U CN207980187U (en) | 2017-05-22 | 2017-05-22 | A kind of radiatherapy grid device and radiotherapy unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113082552A (en) * | 2020-04-15 | 2021-07-09 | 上海联影医疗科技股份有限公司 | System and method for adjusting multi-leaf collimator |
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2017
- 2017-05-22 CN CN201720569490.6U patent/CN207980187U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113082552A (en) * | 2020-04-15 | 2021-07-09 | 上海联影医疗科技股份有限公司 | System and method for adjusting multi-leaf collimator |
| US11511130B2 (en) | 2020-04-15 | 2022-11-29 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for adjusting multi-leaf collimator |
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