CN108744315A - Collimator and radiotherapy apparatus - Google Patents
Collimator and radiotherapy apparatus Download PDFInfo
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- CN108744315A CN108744315A CN201810660705.4A CN201810660705A CN108744315A CN 108744315 A CN108744315 A CN 108744315A CN 201810660705 A CN201810660705 A CN 201810660705A CN 108744315 A CN108744315 A CN 108744315A
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- supporter
- collimation
- connecting portion
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- collimating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1042—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
- A61N5/1045—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head using a multi-leaf collimator, e.g. for intensity modulated radiation therapy or IMRT
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Abstract
The present invention provides a kind of collimator and radiotherapy apparatus, are related to radiotherapy apparatus field.The collimator is applied to the treatment head of radiotherapy apparatus, including：Supporter and multiple independent collimation bodies.Wherein, it collimates and is provided with collimating channel on body, the collimating channel on difference collimation body is different.First connecting portion is provided on supporter, each collimate is both provided with second connecting portion on body, and first connecting portion is detachably connected with second connecting portion, to change the arbitrary collimation body on supporter.Above-mentioned collimator is under the premise of being not only restricted to the structure, size and spatial position for the treatment of head, multiple and different collimation bodies can be replaced simultaneously, to which an equipment can be used for head tumor treatment and extracranial tumors treatment, adaptability is significantly improved, while reducing cost.
Description
Technical field
The present invention relates to radiotherapy apparatus field, more particularly to a kind of collimator and radiotherapy apparatus.
Background technology
Gamma knife (Gamma Knife) utilizes gamma rays as a kind of radiotherapy apparatus according to solid geometry orientation principle
Irradiation is focused to target spot, to achieve the purpose that treat disease.Component part of the treatment head as gamma knife, inside is equipped with
Multiple radiographic sources, for multiple radiographic sources for sending out multiple gamma ray beams, multiple beams are pre- on focus head by being set to
After collimating channel, then the whole collimating channel by being set in the collimator on focus head carries out limit beam and collimation to beam,
To achieve the purpose that limit beam radiation range (that is, size and shape).
In the related technology, collimator is respectively arranged with collimating channel at its different location, by mobile so that different standards
Straight channel is directed at radiographic source, to realize the launched field switching of different sizes and shapes.
Inventor has found to have at least the following problems in the prior art：
Be limited to the structure, size and spatial position for the treatment of head, the number of the collimating channel in collimator be also it is limited,
Therefore, a gamma knife cannot be used for the oncotherapy on head and body portion simultaneously, increase hospital's purchase cost, and then also improve
The treatment cost of patient.
Invention content
In consideration of it, a kind of collimator of present invention offer and radiotherapy apparatus.Specifically, including technical solution below：
On the one hand, a kind of collimator is provided, the treatment head of radiotherapy apparatus is applied to, the collimator includes：Supporter,
And multiple independent collimation bodies；
Collimating channel is provided on the collimation body, the collimating channel on the different collimation bodies is different；
It is provided with first connecting portion on the supporter, second connecting portion is both provided on each collimation body, it is described
First connecting portion is detachably connected with the second connecting portion, to change the arbitrary collimation body on the supporter.
In one possible implementation, multiple first connecting portions are provided on the supporter, it is each described
First connecting portion can be connect with the second connecting portion of a collimation body respectively.
In one possible implementation, the collimator further includes：For driving the supporter relative to described
Treat cephalomotor driving mechanism.
In one possible implementation, multiple collimation bodies are distributed in circumferential fashion on the supporter；
The supporter makes any collimation body be directed at the radiographic source in the treatment head by rotation.
In one possible implementation, the supporter includes：The shaft being set in the treatment head；
The turntable being set in the shaft；
The first connecting portion is set on the turntable.
In one possible implementation, the collimator further includes：Position-limit mechanism, for limiting the collimation body phase
The supporter is moved.
In one possible implementation, multiple collimation bodies are distributed in array way on the supporter；
The supporter passes through the mobile radiographic source for making any collimation body be aligned in the treatment head.
In one possible implementation, multiple collimation bodies are distributed in a linear fashion on the supporter；
The supporter passes through the mobile radiographic source for making any collimation body be aligned in the treatment head.
In one possible implementation, the collimating channel on the different collimation bodies is different, including in following scenario described
At least one：
The arrangement of different, the described collimating channels in collimating aperture of different, the described collimating channels of the shape of the collimating channel
The number of different, the described collimating channels of mode is different.
In one possible implementation, being detachably connected between the first connecting portion and the second connecting portion
At least one of mode, including following connection type：Clamping, key connection, pin joint, riveting, threaded connection, magnetic connection.
In one possible implementation, it is additionally provided with shield on the supporter.
In one possible implementation, the ray attenuation intensity of the shield declines higher than the ray of the supporter
Subtract intensity.
In one possible implementation, the shield is provided with multiple, and each shield is located at adjacent two
Between a collimation body.
On the other hand, a kind of radiotherapy apparatus is provided, which is characterized in that the radiotherapy apparatus includes above-mentioned any standard
Straight device.
The advantageous effect of technical solution provided in an embodiment of the present invention includes at least：
Collimator provided in an embodiment of the present invention, by making the first connecting portion on supporter connect with second on collimation body
Socket part is detachably connected, and changeable different collimation body is corresponding with the ray source position inside treatment head, so that in treatment head
The ray that the radiographic source in portion is sent out is sent out by the collimating channel on different collimation bodies.Due to the collimating channel on different collimation bodies
Difference replaces the collimation body with corresponding collimating channel by adaptability for the therapeutic purpose of different sizes and shapes, you can
Obtain the beam of size and shape corresponding with therapeutic purpose.As it can be seen that collimator provided in an embodiment of the present invention, is being not only restricted to
Under the premise of the structure for the treatment of head, size and spatial position, multiple and different collimation bodies can be replaced simultaneously, to an equipment
It can be used for head tumor treatment and extracranial tumors treatment, significantly improve adaptability, while reducing cost.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram of the collimator provided in an embodiment of the present invention obtained from the first visual angle；
Fig. 2-1 to Fig. 2-4 is the structural schematic diagram of the collimation body provided in an embodiment of the present invention with different collimating channels；
Fig. 3 is the sectional view of collimator provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the collimator provided in an embodiment of the present invention obtained from the second visual angle；
Fig. 5 is the front view provided in an embodiment of the present invention for illustrating collimator installation process；
Fig. 6 is the sectional view provided in an embodiment of the present invention for illustrating collimator installation process.
Fig. 7 is the partial sectional view of collimator provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of the second position-limit mechanism provided in an embodiment of the present invention.
Reference numeral indicates respectively：
1- supporters,
101- shafts, 102- turntables, the first holding tanks of 103-, 104- positive stop lug boss,
105- flexible clamp pieces,
1051- compressed springs, 1052- glands, 1053- guide posts, 1054- triangle fixture blocks,
The second holding tanks of 106-, 107- shields,
2- collimation bodies, 201- collimating channels, 202- limiting grooves,
301- driven gears, 302- driving gears, 303- driving motors,
4- first bearings, 5- second bearings,
6- holders, the first sleeve sections of 601-, 602- second sleeve sections, 603- 3rd sleeve sections,
M- treatment heads.
Specific implementation mode
To keep technical scheme of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.
On the one hand, an embodiment of the present invention provides a kind of collimators, are applied to the treatment head M of radiotherapy apparatus, such as 1 institute of attached drawing
Show, which includes：Supporter 1 and multiple independent collimation bodies 2.Wherein, it collimates on body 2 and is provided with collimating channel
201, it is different that difference collimates the collimating channel 201 on body 2.It is provided with first connecting portion on supporter 1, it is each to collimate on body 2
It is provided with second connecting portion, first connecting portion is detachably connected with second connecting portion, to change the arbitrary collimation body on supporter 1
2。
It should be noted that in the embodiment of the present invention, radiotherapy apparatus can be put for sending out the linear accelerator of X-ray
Equipment is treated, can be used for sending out gamma-ray isotope radioactive source radiotherapy apparatus, can also be that proton or heavy ion radiotherapy are set
It is standby etc..The embodiment of the present invention is not specifically limited the type of radiotherapy apparatus, and attached drawing is only put with gamma-ray isotope radioactive source
It is illustrated for treatment equipment.
In existing design, it is provided with the collimating aperture group of 5-6 group different pore size sizes in a collimator, and general head
The collimating aperture that may be used when oncotherapy is smaller, such as can be φ 4, φ 8, φ 10, φ 12, φ 14, and in therapeutic process
In need to switch different size of collimating aperture.The collimating aperture that may use is larger when extracranial tumors are treated, for example, can be φ 16,
φ 18, φ 20, φ 22, φ 24, and need to switch different size of collimating aperture in therapeutic process.Existing collimator fixed setting
5-6 groups hole can not meet the Treatment need of head tumor and extracranial tumors simultaneously.
It is different from the prior art, in the application, one group of collimating aperture group, the row of the collimating aperture group is provided on a collimation body
Row mode is identical as the arrangement mode of radioactive source, each collimation body is independent can be dismounted with supporter.To control
When treating head tumor, the collimation body with 14 collimating apertures of φ 4- φ may be used, so as to meet the treatment of single head tumor
Therapeutic process；When treating extracranial tumors, the collimation body with 30 collimating apertures of φ 16- φ may be used, so as to meet
The therapeutic process of single extracranial tumors treatment.
Collimator provided in an embodiment of the present invention, by making the first connecting portion on supporter 1 and second on collimation body 2
Interconnecting piece is detachably connected, and changeable different collimation body 2 is corresponding with the ray source position inside treatment head M, so that treatment
The ray that radiographic source inside head M is sent out is sent out by the collimating channel 201 on different collimation bodies 2.Due on different collimation bodies 2
Collimating channel 201 it is different, for the therapeutic purpose of different sizes and shapes, being replaced by adaptability has corresponding collimating channel
201 collimation body 2, you can obtain the beam of size and shape corresponding with therapeutic purpose.As it can be seen that provided in an embodiment of the present invention
Collimator can be replaced multiple and different simultaneously under the premise of being not only restricted to the structure, size and spatial position for the treatment of head M
Body is collimated, to which an equipment can be used for head tumor treatment and extracranial tumors treatment, adaptability is significantly improved, reduces simultaneously
Cost.
Based on above-mentioned it is found that collimator provided in an embodiment of the present invention changes tradition by the way that multiple collimation bodies 2 are arranged
Large size and monolithic construction pattern make multiple collimation bodies 2 with detachable by establishing smaller and single type tactic pattern
Mode be installed on supporter 1, it is interchangeable to make collimation body 2 on supporter 1.
It is understood that by preparing multiple and different collimation bodies 2 from the background, to adapt to treatment mesh of different sizes
Mark.For example, when for treating head tumor, the smaller collimation body 2 in 201 aperture of collimating channel can be chosen and be installed on branch
On support body 1；When for treating extracranial tumors, the larger collimation body 2 in 201 aperture of collimating channel can be chosen and be installed on supporter
On 1；When for treatment head M portion's functional diseases, the smaller collimation body in 201 aperture of collimating channel 2 can also be chosen and be installed on
On supporter 1.As it can be seen that by expanding 201 class of collimating channel otherwise, the quantity of collimating channel 201 is made to be no longer limited by standard
Size, structure and the spatial position of straight device.
Above-mentioned to refer to, which includes multiple collimation bodies 2, and different collimation bodies 2 have different collimating channels 201,
Collimating channel 201 can carry out adaptability arrangement according to the arrangement form of the radiographic source inside treatment head M.Wherein, different collimations
Collimating channel 201 on body 2 is different, including at least one of following scenario described：The shape of collimating channel 201 is different, collimation is logical
The collimating aperture in road 201 is different, collimating channel 201 arrangement mode is different, collimating channel 201 number is different, that is, different accurate
At least one of the number of collimating channel 201 on stretched 2, structure, arrangement mode, aperture are different, then what is formed penetrates
Wild shape, field size and dosage rate are different, are suitable for different Treatment need.
For example, for two different collimation bodies 2, the number of collimating channel 201 can be identical thereon, but arranges
Mode simultaneously differs；Alternatively, the number of collimating channel 201 can be identical thereon, but aperture is different；Alternatively, collimation is logical thereon
The arrangement mode in road 201 is different, but aperture is identical；Alternatively, the number of collimating channel 201, arrangement mode and aperture thereon
It is all different.
For collimating channel 201, the number on same collimation body 2 can be multiple, such as more than 10；Its
Structure can be round hole, rectangular opening, polygonal hole etc., for multiple collimating channels 201 on same collimation body 2,
Structure can all identical, part it is identical or all different；Its arrangement mode can be the geometry of rule, such as multi-turn
Annular shape (referring to attached drawing 2-1), circular block shape, rectangular block shape (referring to attached drawing 2-2), helical form (referring to attached drawing 2-3), linear
(referring to attached drawing 2-4) etc..
By the way that first connecting portion is arranged on supporter 1, body 2 is collimated with connection, it is to be understood that first connecting portion institute
It is passed through in the ray that region can be such that radiographic source sends out.In a kind of possible example, there are one first connecting portion can be arranged,
By alternatively selecting collimation body 2, its second connecting portion is made to be connect with first connecting portion.
In alternatively possible example, multiple first connecting portions, each first connecting portion difference are provided on supporter 1
With one collimation body 2 second connecting portion connect, for example, first connecting portion can be provided with 2,3,4,5,6,7
It is a etc., so set, multiple collimation bodies 2 can be installed simultaneously on supporter 1, by changing the position of supporter 1, to make not
Same collimation body 2 is directed at the radiographic source inside treatment head M, simplifies the replacement operation of collimation body 2, and raising therapeutic efficiency.It can be with
Understand, for collimating the use process of body 2, the single body 2 that collimates is independent of each other, is used alone.
It is arranged for the supporter 1 of multiple first connecting portions for simultaneously, multiple first connecting portions, such as its structure and big
It is small can be all identical, can also part it is identical, can also be all different.Accordingly, it is adapted to collimation body 2 mounted thereto
Structure and size can also correspond to difference.
For example, first connecting portion can be round hole shape or channel-shaped, and accordingly, collimation body 2 can be discoid.The
One interconnecting piece can be rectangular opening shape or channel-shaped, and accordingly, collimation body 2 can be rectangular block shape.The application is for collimation body
Shape etc. is not specifically limited, attached drawing only by collimate position it is discoid for illustrated.
For being arranged simultaneously on supporter 1 for the situation of multiple collimation bodies 2, in the premise for improving collimation operating efficiency
Under, in order to avoid frequently dismounting, corresponding change using which collimation body 2 and ray can be carried out by the position of change supporter 1
Source is aligned.Exemplary, which further includes：For driving collimator, such as the drive that supporter 1 is moved relative to treatment head M
Motivation structure.It is exemplary, in the application, the switching of collimation body can be driven by driving supporter movement, 1 position of supporter
Change can be realized by way of rotating or being translatable, and give illustrate individually below：
In a kind of possible example, as shown in Fig. 1, multiple collimation bodies 2 are distributed in circumferential fashion on supporter 1.
Wherein, supporter 1 makes any collimation body 2 be directed at the radiographic source in treatment head M by rotation.So it is conducive to expand on supporter 1
The region that can be efficiently used, that is, can be used as placing collimation body 2 along the region of its peripheral direction.Illustratively, it supports
Body 1 can be circle.In 1 rotary course of supporter, body 2 is collimated in order to prevent, unnecessary displacement occurs, the collimator is also
Including：Position-limit mechanism is moved for limiting collimation body 2 relative to supporter 1.
For example, as shown in Fig. 1, which may include：The shaft 101 being set on treatment head M；It is set in
Turntable 102 in shaft 101.Wherein, first connecting portion is set on turntable 102.By rotating turntable 102, you can make thereon
Different collimation bodies 2 are respectively aligned to radiographic source.
By the fit system of shaft 101 and turntable 102, keep the rotation of supporter 1 more reliable and more stable.Wherein it is possible to
102 fixing sleeve of turntable is set to be loaded in shaft 101, in this way, shaft 101 is made to be rotatablely arranged on treatment head M, 102 He of turntable
Shaft 101 rotates synchronously；Alternatively, turntable 102 can also be made rotationally to be set in shaft 101, in this way, making shaft
101 are fixedly installed on treatment head M, make 101 rotation around the shaft of turntable 102.
Wherein, shaft 101 can be located at the position of centre of gravity of supporter 1, then respectively collimation body 2 is in centered on shaft 101
The circle distribution of rule；Alternatively, shaft 101 can also be eccentrically set on supporter 1, then respectively collimation body can 101 be in around the shaft
Irregular circumference (such as oval or cam shape) distribution.
In alternatively possible example, multiple collimation bodies 2 are distributed in array way on supporter 1.Wherein, supporter
1 passes through the mobile radiographic source for making any collimation body 2 be aligned in treatment head M.
Wherein, the move mode of supporter 1 can be translation, be penetrated as long as can reach and make each collimation body 2 that can be aligned
Line source.In view of preparing convenience, supporter 1 can be rectangle.
In another possible example, multiple collimation bodies 2 are distributed in linear manner on supporter 1；
Supporter 1 passes through the mobile radiographic source for making any collimation body 2 be aligned in treatment head M.
Wherein, the move mode of supporter 1 can be translation.Illustratively, supporter 1 can be bar shaped, and collimation body 2 is along item
Shape direction is linearly distributed on supporter 1, by translating supporter 1 along bar shaped direction, you can reaches replacement alignment radiographic source
Collimation body 2 purpose.Alternatively, supporter can be rectangle, collimation body can be array distribution on supporter, by two
A side translates up supporter to switch collimation body.
Wherein, for the change of 1 position of supporter, the manually mode that may be used carries out, and can also use automatically side
Formula carries out.It is precisely reliable based on moving process, and convenient for the purpose of control, automatic mode may be used and carry out above-mentioned movement.
For the move mode of translation, for example, lead-screw drive mechanism, rack gear, guide rail may be used and pass
Motivation structure etc. can also be moved as driving mechanism and it is possible to move in one direction in both directions.
For the move mode of rotation, for example, gear drive, belt rotating mechanism etc. may be used as drive
Motivation structure.
For example with gear drive, as shown in attached drawing 3 and attached drawing 4, it is above-mentioned be related to for driving 1 turn of supporter
Dynamic driving mechanism includes：Fixing sleeve is loaded on the driven gear 301 in shaft 101；The driving gear engaged with driven gear 301
302；The driving motor 303 coaxially connected with driving gear 302.
Driving motor 303 is that driving gear 302 provides power, makes its rotation, and then drive meshed driven tooth
301 rotation of wheel, the rotation of driven gear 301 can drive shaft 101 to rotate, and then drive 102 turns of turntable in shaft 101
It is dynamic.
Wherein, diameter is more than diameter where the root circle of driving gear 302 where the root circle of driven gear 301, with profit
In raising to the controllability of 301 rotation process of driven gear.For example, the gear reduction ratio of the two can be 100:15-20.
When shaft 101 is rotatablely arranged on treatment head M, and turntable 102 is fixedly set in shaft 101.In order to
Keep the rotation of shaft 101 more smooth, bearing arrangement can be added, its specific arrangement is described individually below：
As an example, as shown in attached drawing 3 and attached drawing 7, first bearing 4 is provided, and the inner ring of first bearing 4 is made to fix
It is sleeved in shaft 101, and the end face of 4 inner ring of first bearing is connect with turntable 102.Meanwhile outer ring and the fixation of first bearing 4
It is connected in the holder 6 on treatment head M, to realize that stablizing for first bearing 4 is placed.As it can be seen that by the way that first bearing 4 is as above arranged,
The rotation process of shaft 101 can be made more to stablize smooth.
Further, as shown in attached drawing 3 and attached drawing 7, second bearing 5, the inner ring fixing sleeve of second bearing 5 can also be provided
Mounted in the end of shaft 101, meanwhile, the end of shaft 101 can stretch in limiting slot matched on treatment head M, the
The outer ring of two bearings 5 is connect with the above-mentioned holder 6 being fixed on treatment head M.
It can be seen from the above, second bearing 5, driven gear 301, first bearing 4, turntable 102 are set in shaft 101 successively
On, and second bearing 5 is located at shaft 101 close to one end for the treatment of head M, such as lower end, turntable 102 is located at the another of shaft 101
End, such as upper end.
In view of one end of shaft 101 needs fixed suit turntable 102, the other end to need to stretch to the limit on treatment head M
In the slot of position, and unitary rotation.Based on above-mentioned, under the premise of making shaft 101 that there are enough enabling capabilities, in order to ensure its rotation
More time saving and energy saving, as shown in Fig. 7, shaft 101 may include：The first linkage section that diameter is gradually reduced, the second linkage section,
Three linkage sections and the 4th linkage section.Wherein, the first linkage section offsets and connect with the end face of turntable 102, and the second linkage section is arranged
Inside turntable 102, third linkage section is sheathed on inside the inner ring of first bearing 4, and the 4th linkage section is sheathed on second bearing 5
Inside inner ring.
Based on the above structure of shaft 101, it is sleeve-shaped, such as attached drawing that can make the above-mentioned holder 6 being fixed on treatment head M
Shown in 7, it may include：First sleeve sections 601, second sleeve section 602 and 3rd sleeve section 603 connected in sequence, wherein first
The inner wall of sleeve sections 601 is fixedly connected with the outer wall of first bearing 4, and driven gear is accommodated in the inner cavity of second sleeve section 602
301, and offered on the side wall of second sleeve section 602 and (correspond to the referring to Fig. 7 for the trepanning of expose portion driven gear 301
The right part of two sleeve sections 602), by the trepanning, driven gear 301 can be engaged with driving gear 302.3rd sleeve section
603 inner wall is fixedly connected with the outer wall of second bearing 5, meanwhile, the end face of 3rd sleeve section 603 is fixed on treatment head M, real
The fixation of existing holder 6.
Further, intermediate sleeve section can also be formed between the first sleeve sections 601 and second sleeve section 602, it is intermediate
The internal diameter of sleeve sections both is less than, its end face and the cycle surface of first bearing 4 can be made to be fixedly connected, further increased to the
One bearing 4 stablizes support.
As it can be seen that by the way that first bearing 4 and second bearing 5 is as above arranged, the rotation of shaft 101 can be made more smooth, profit
In the service life for improving collimator.Wherein, above-mentioned first bearing 4 and second bearing 5 can select cross roller bearing.
Above-mentioned to refer to, turntable 102 can be fixedly set in shaft 101, as an example, can make shaft 101
Upper end is arranged to outer ring boss, while annular groove compatible with outer ring boss is arranged at the top of turntable 102,
So that the outer ring boss of 101 upper end of shaft is caught in annular groove, realizes limit in radial directions.Further, it utilizes
Fastener, such as screw, make outer ring boss be connected with annular groove, realize limit in the axial direction, and then realize and turn
Fixed suit of the disk 102 in shaft 101.
In the application, for the detachable connection between first connecting portion and second connecting portion, may include with
At least one of lower connection type：Clamping, key connection, pin joint, riveting, threaded connection, magnetic connection.
For example, when using being clamped, first connecting portion can be made to be arranged to card slot shape, second connecting portion can be set
It is set to matched fixture block shape；Further, clip can also be set, made between first connecting portion and second connecting portion
Connection relation it is more firm.
It illustrates in conjunction with the above-mentioned turntable 102 being related to, when using snap fit, first connecting portion can be arranged to
First holding tank 103, as shown in Fig. 5, the first holding tank 103 have the side mouth for making collimation body 2 pass in and out.By
Side mouth is set on first holding tank 103, to facilitate collimation body 2 that can be caught in or exit the along the radial direction of turntable 102
One holding tank 103.
In order to prevent in 102 rotation process of turntable, collimation body 2 flies out out of first holding tank 103, passes through the first limit
Mechanism and the second position-limit mechanism carry out limit axially and radially on direction, it is ensured that it is steadily connected in appearance to be directed at stretched 2
It receives in slot.Exemplary herein, involved position-limit mechanism may include：First position-limit mechanism, for limiting collimation body 2 along turntable
102 axial direction movement；Second position-limit mechanism is moved for limiting collimation body 2 along the radial direction of turntable 102.It is exemplary,
In order to improve the installation or removal efficiency of collimation body 2, and simplify the structure of collimator, as shown in Fig. 6, the first position-limit mechanism packet
It includes：The positive stop lug boss 104 being set in the first holding tank 103；And be set to collimation body 2 on, and with 104 phase of positive stop lug boss
The limiting groove 202 of adaptation.
After collimation body 2 is entered by side mouth in the first holding tank 103, limiting groove 202 thereon is caught in limit
In boss 104, the two cooperation clamping can prevent collimation body 2 along the axially displaced of turntable 102.
Wherein, collimation body 2 can be discoid, and limiting groove 202 can along the circumferential direction be opened in the side wall of collimation body 2
On.
As shown in Fig. 6, the second position-limit mechanism includes：It is oppositely disposed in two flexible clamp pieces 105 on turntable 102,
Wherein, flexible clamp piece 105 is flexible along the radial direction of the first holding tank 103, and is caught in limiting groove 202 in the reset state
It is interior.
By being oppositely arranged two flexible clamp pieces 105, the two cooperation is caught in the limiting groove 202 on collimation body 2, can
Prevent it from radially moving.It is understood that two flexible clamp pieces 105 are under compression, can be accommodated along first
The radially outward direction of slot 103 moves, so that collimation body 2 enters in the first holding tank 103, and in natural reset state
Under, flexible clamp piece 105 is caught in limiting groove 202, to be directed at the limit that stretched 2 carries out radial direction.
As shown in Fig. 8, which includes：Compressed spring 1051, be contained in radially be opened in turn
In accommodating chamber on disk 102；Gland 1052, opening of the lid loaded on accommodating chamber；Guide post 1053 movably passes through gland
Through-hole on 1052, first end are limited in the accommodating chamber of 1052 side of gland, and are connect with compressed spring 1051, second end
It is limited in the other side of gland 1052；Triangle fixture block 1054 is connect with the second end of guide post 1053.
Compressed spring 1051 in its natural state when, triangle fixture block 1054 is in working position, when compressed spring 1051 exists
When under compressive state, guide post 1053 then bounces back into accommodating chamber, and then triangle fixture block 1054 is made to be moved to inoperative position.Its
In, the working position of triangle fixture block 1054 refers to the position that can be caught in the limiting groove 202 of collimation body 2.
It is understood that when positioned at working position, the distance between two triangle fixture blocks 1054 being oppositely arranged are less than
The diameter of 202 place annulus of limiting groove, to realize the limit of alignment 2 radial direction of stretched.In addition, so set, when collimation
When body 2 is interior into its by 103 side mouth of the first holding tank, collimation body 2 compresses 1054 (compressed spring 1051 of triangle fixture block
In compressive state), so that it is moved to inoperative position by working position, so that collimation body 2 is can smoothly enter into the first holding tank 103, and make
Limiting groove 202 thereon is caught in positive stop lug boss 104.Then, compressed spring 1051 is reset to nature, triangle fixture block
1054, which are moved to working position, is caught in limiting groove 202, is limited in radial directions with being directed at stretched 2.
Wherein, for two flexible clamp pieces 105 being oppositely arranged, the corresponding two triangle fixture blocks 1054 of the two
Corner is opposite, is so conducive to the entry and exit of collimation body 2.
Wherein, by the way that gland 1052 is arranged, in order to the installation of flexible clamp piece 105.It illustratively, can be in guide post 1053
Upper setting limited step, and internal diameter is set on gland 1052 and is less than limited step outer diameter, and more than 1053 latus rectum of guide post
Through-hole.Limited step is always positioned in the accommodating chamber of 1052 side of gland, and by the cooperation with gland 1052, is realized to being oriented to
The limit of column 1053.
For example, when using being threadedly coupled, first connecting portion can be arranged to lead to the pre-collimated on treatment head M
The internal thread hole that road 201 is connected to, while collimation body 2 is arranged to cylinder, it is provided on outer wall and is adapted with internal thread hole
External screw thread as second connecting portion, you can realization connect with the internal thread of first connecting portion.
Further, collimation body 2 may include：It is provided with above-mentioned externally threaded linkage section, and what is connect with linkage section apply
Power section is dismounted by making the diameter of force section be more than linkage section in order to effortlessly be directed at stretched 2.
In order to prevent in 1 rotation process of supporter, collimation body 2 moves back button, and position-limit mechanism can be arranged.Illustratively, should
Position-limit mechanism includes：The limit hole radially opened up on supporter 1, collimation body 2 side wall on be arranged with limit
The compatible card slot in position hole and stop bit part, such as pin or screw etc., by making pin or screw be inserted into card slot by limit hole
It is interior, you can to prevent collimation body 2 from rotating relative to turntable 102.
It will be appreciated by persons skilled in the art that shield 107 is additionally provided on supporter 1, for non-treatment shape
Ray is shielded under state.The shield 107 can be the subregion of itself of supporter 1, can be regarded as supporter 1 at this time
The mask bit of itself, or be removable installed in part thereon.Certainly, the case where supporter does not include shield
Under, it can also achieve the purpose that Guan Yuan using rotary emission source or other shielding modes.The application on supporter to be arranged
It is illustrated for shield.
When shield 107 is detachable, with the detachable connection between supporter 1, can be connect with first
Detachable connection between portion and second connecting portion is identical.
For example, as shown in Fig. 5, which can be with the second holding tank 106 for being set on supporter 1
Clamping.For the snap fit of shield 107 and the second holding tank 106, reference can be made to the card of collimation body 2 and the first holding tank 103
Connect mode.This also means that the first holding tank 103 can be consistent with the structure of the second holding tank 106, collimation body 2 and shielding
The structure of body 107 is also consistent, differs only in, and collimates and is in axial direction provided with collimating channel 201 on body 2, and shield 107
To be closed, to achieve the purpose that shield ray.
In a kind of example, the first holding tank 103 and the second holding tank 106 are circular groove, such as major arc shape,
Side mouth is opened in the perimeter side walls of turntable 102.Correspondingly, collimating body 2 and shield 107 can be and circular groove phase
The disc-shaped structure of adaptation.
The ray attenuation intensity of shield 107 is higher than the ray attenuation intensity of supporter 1, and the material by changing the two can
Reach above-mentioned purpose.For example, supporter 1 can be made of steel or its alloy, and shield 107 can be made of tungsten or lead
(it is better than steel or its alloy to the decaying of ray).
Wherein, there are one shield 107 can be arranged, can also be provided with it is multiple, it is each to shield when being provided with multiple
Body 107 can be between two neighboring collimation body 2, to achieve the purpose that high-speed switch source.
It should be noted that when the position change of supporter 1, the collimation body 2 of alignment radiographic source can be not only replaced,
May also reach up makes shield 107 be directed at radiographic source with the purpose in the source of closing.
On the other hand, the embodiment of the present invention additionally provides a kind of radiotherapy apparatus, which includes above-mentioned times being related to
A kind of collimator.
Based on using above-mentioned collimator, radiotherapy apparatus provided in an embodiment of the present invention, be used not only for volume compared with
Small head treatment, it can also be used to which the larger body portion treatment of volume has higher adaptability.
The above is merely for convenience of it will be understood by those skilled in the art that technical scheme of the present invention, not limiting
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection domain of invention.
Claims (14)
1. a kind of collimator, it is applied to the treatment head (M) of radiotherapy apparatus, which is characterized in that the collimator includes：Supporter
(1) and multiple independent collimation bodies (2)；
Collimating channel (201) is provided on the collimation body (2), the collimating channel (201) on the different collimation bodies (2) is no
Together；
It is provided with first connecting portion on the supporter (1), is both provided with second connecting portion on each collimation body (2), institute
It states first connecting portion to be detachably connected with the second connecting portion, to change the arbitrary collimation body on the supporter (1)
(2)。
2. collimator according to claim 1, which is characterized in that be provided with multiple described first on the supporter (1)
Interconnecting piece, each first connecting portion are connect with the second connecting portion of a collimation body (2) respectively.
3. collimator according to claim 2, which is characterized in that the collimator further includes：For driving the support
The driving mechanism that body (1) is moved relative to the treatment head (M).
4. collimator according to claim 2, which is characterized in that multiple collimation bodies (2) are distributed in circumferential fashion
On the supporter (1)；
The supporter (1) makes any collimation body (2) be directed at the radiographic source in the treatment head (M) by rotation.
5. collimator according to claim 4, which is characterized in that the supporter (1) includes：It is set to the treatment head
(M) shaft (101) on；
The turntable (102) being set in the shaft (101)；
The first connecting portion is set on the turntable (102).
6. collimator according to claim 1, which is characterized in that the collimator further includes：Position-limit mechanism, for limiting
The collimation body (2) moves relative to the supporter (1).
7. collimator according to claim 2, which is characterized in that multiple collimation bodies (2) are distributed in array way
On the supporter (1)；
The supporter (1) passes through the mobile radiographic source for making any collimation body (2) be aligned in the treatment head (M).
8. collimator according to claim 2, which is characterized in that multiple collimation bodies (2) are distributed in a linear fashion
On the supporter (1)；
The supporter (1) passes through the mobile radiographic source for making any collimation body (2) be aligned in the treatment head (M).
9. collimator according to claim 1, which is characterized in that the collimating channel (201) on the different collimation bodies (2)
At least one of difference, including following scenario described：
The collimating aperture difference of different, the described collimating channels (201) of the shape of the collimating channel (201), the collimating channel
(201) number of different, the described collimating channels (201) of arrangement mode is different.
10. collimator according to claim 1, which is characterized in that the first connecting portion and the second connecting portion it
Between at least one of detachable connection, including following connection type：Clamping, key connection, pin joint, riveting, screw thread connect
It connects, magnetic connection.
11. according to claim 1-10 any one of them collimators, which is characterized in that be additionally provided on the supporter (1)
Shield (107).
12. collimator according to claim 11, which is characterized in that the ray attenuation intensity of the shield (107) is high
In the ray attenuation intensity of the supporter (1).
13. collimator according to claim 11, which is characterized in that the shield (107) is provided with multiple, Mei Gesuo
Shield (107) is stated between the two neighboring collimation body (2).
14. a kind of radiotherapy apparatus, which is characterized in that the radiotherapy apparatus includes claim 1-13 any one of them collimation
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660705.4A CN108744315A (en) | 2018-06-25 | 2018-06-25 | Collimator and radiotherapy apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660705.4A CN108744315A (en) | 2018-06-25 | 2018-06-25 | Collimator and radiotherapy apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN108744315A true CN108744315A (en) | 2018-11-06 |
Family
ID=63977305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810660705.4A Pending CN108744315A (en) | 2018-06-25 | 2018-06-25 | Collimator and radiotherapy apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN108744315A (en) |
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| CN114452549A (en) * | 2022-01-17 | 2022-05-10 | 江苏瑞尔医疗科技有限公司 | Collimation system capable of realizing automatic and quick switching |
| CN114720496A (en) * | 2022-06-08 | 2022-07-08 | 四川大学 | Full-field X-ray fluorescence imaging analysis or X-ray diffraction analysis device and method |
| WO2022170603A1 (en) * | 2021-02-10 | 2022-08-18 | 西安大医集团股份有限公司 | Radiotherapy device and control method therefor |
| WO2022170601A1 (en) * | 2021-02-10 | 2022-08-18 | 西安大医集团股份有限公司 | Frame and radiation therapy device |
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Address after: 710018 Xi'an Economic and Technological Development Zone, Shaanxi Province, No.66, Fengcheng 12 Road, No.28 Building, International City Business Center, Unit 1, Floor 3, Room 10301 Applicant after: CYBERMED RADIOTHERAPY TECHNOLOGIES Co.,Ltd. Applicant after: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Address before: Weiyang District of Fengcheng city of Xi'an province Shaanxi twelve road 710018 No. 66 first city business center No. 28 Building 1 unit 17 Applicant before: CYBERMED RADIOTHERAPY TECHNOLOGIES Co.,Ltd. Applicant before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Address after: 710018 Xi'an Economic and Technological Development Zone, Shaanxi Province, No.66, Fengcheng 12 Road, No.28 Building, International City Business Center, Unit 1, Floor 3, Room 10301 Applicant after: Xi'an Dayi Group Co.,Ltd. Applicant after: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Address before: 710018 Xi'an Economic and Technological Development Zone, Shaanxi Province, No.66, Fengcheng 12 Road, No.28 Building, International City Business Center, Unit 1, Floor 3, Room 10301 Applicant before: CYBERMED RADIOTHERAPY TECHNOLOGIES Co.,Ltd. Applicant before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. |
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