CN209475407U - Collimator and radiotherapy apparatus - Google Patents
Collimator and radiotherapy apparatus Download PDFInfo
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- CN209475407U CN209475407U CN201820979213.7U CN201820979213U CN209475407U CN 209475407 U CN209475407 U CN 209475407U CN 201820979213 U CN201820979213 U CN 201820979213U CN 209475407 U CN209475407 U CN 209475407U
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Abstract
The utility model provides a kind of collimator and radiotherapy apparatus, is related to radiotherapy apparatus field.The collimator is applied to the treatment head of radiotherapy apparatus, comprising: 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.It is provided with first connecting portion on supporter, is provided with second connecting portion on each collimation body, first connecting portion is detachably connected with second connecting portion, to change any 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, is reduced costs simultaneously.
Description
Technical field
The utility model relates to radiotherapy apparatus field, in particular to a kind of collimator and radiotherapy apparatus.
Background technique
Gamma knife (Gamma Knife) utilizes gamma rays according to solid geometry orientation principle as a kind of radiotherapy apparatus
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 issuing 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 quasi-
Straight channel is directed at radiographic source, to realize the launched field switching of different sizes and shapes.
Inventor discovery in the prior art the prior art has at least the following problems:
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.
Utility model content
In consideration of it, the utility model provides a kind of collimator and radiotherapy apparatus.Specifically, including technical side below
Case:
On the one hand, a kind of collimator is provided, applied to the treatment head of radiotherapy apparatus, 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, is provided with second connecting portion on each collimation body, it is described
First connecting portion is detachably connected with the second connecting portion, to change any 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 include: for driving the supporter relative to described
Treat cephalomotor driving mechanism.
In one possible implementation, multiple collimation bodies are distributed on the supporter with circumferential fashion；
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 suited on the shaft；
The first connecting portion is set on the turntable.
In one possible implementation, the collimator further include: position-limit mechanism, for limiting the collimation body phase
The supporter is moved.
In one possible implementation, multiple collimation bodies are distributed on the supporter with array manner；
The supporter passes through the mobile radiographic source for being directed at any collimation body 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 being directed at any collimation body 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, shield is additionally provided on the supporter.
In one possible implementation, the ray that the ray attenuation intensity of the shield is higher than the supporter declines
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 beneficial effect of technical solution provided by the embodiment of the utility model includes at least:
Collimator provided by the embodiment of the utility model, by making the in first connecting portion on supporter and collimation body
Two interconnecting pieces are detachably connected, and it is corresponding with the ray source position inside treatment head that different collimation bodies can be switched, so that treating
The ray that radiographic source inside head issues is issued by the collimating channel on different collimation bodies.Due to the collimation on different collimation bodies
Channel is different, for the therapeutic purpose of different sizes and shapes, has the collimation body of corresponding collimating channel by adaptability replacement,
The beam of size and shape corresponding with therapeutic purpose can be obtained.As it can be seen that collimator provided by the embodiment of the utility model,
Under the premise of the structure, size and spatial position that are not only restricted to treatment head, multiple and different collimation bodies can be replaced simultaneously, thus
One equipment can be used for head tumor treatment and extracranial tumors treatment, significantly improves adaptability, reduces costs simultaneously.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the collimator provided by the embodiment of the utility model obtained from the first visual angle；
Fig. 2-1 to Fig. 2-4 is that the structure of the collimation body provided by the embodiment of the utility model with different collimating channels is shown
It is intended to；
Fig. 3 is the sectional view of collimator provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram of the collimator provided by the embodiment of the utility model obtained from the second visual angle；
Fig. 5 is provided by the embodiment of the utility model for illustrating the front view of collimator installation process；
Fig. 6 is provided by the embodiment of the utility model for illustrating the cross-sectional view of collimator installation process.
Fig. 7 is the partial sectional view of collimator provided by the embodiment of the utility model；
Fig. 8 is the structural schematic diagram of the second position-limit mechanism provided by the embodiment of the utility model.
Appended drawing reference respectively indicates:
1- supporter,
101- shaft, 102- turntable, the first holding tank of 103-, 104- positive stop lug boss,
105- flexible clamp piece,
1051- compressed spring, 1052- gland, 1053- guide post, 1054- triangle fixture block,
The second holding tank of 106-, 107- shield,
2- collimation body, 201- collimating channel, 202- limiting groove,
301- driven gear, 302- driving gear, 303- driving motor,
4- first bearing, 5- second bearing,
6- bracket, 601- first sleeve section, 602- second sleeve section, 603- 3rd sleeve section,
M- treatment head.
Specific embodiment
To keep the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with attached drawing
Mode is described in further detail.
On the one hand, the utility model embodiment provides a kind of collimator, such as attached applied to the treatment head M of radiotherapy apparatus
Shown in Fig. 1, which includes: supporter 1 and multiple independent collimation bodies 2.Wherein, it collimates to be provided with to collimate on body 2 and lead to
Road 201, it is different that difference collimates the collimating channel 201 on body 2.First connecting portion is provided on supporter 1, on each collimation body 2
It is provided with second connecting portion, first connecting portion is detachably connected with second connecting portion, to change any collimation on supporter 1
Body 2.
It should be noted that radiotherapy apparatus can be the linear accelerating for issuing X-ray in the utility model embodiment
Device radiotherapy apparatus can be used for issuing gamma-ray isotope radioactive source radiotherapy apparatus, can also be that proton or heavy ion are put
Treat equipment etc..The utility model embodiment is not specifically limited the type of radiotherapy apparatus, and attached drawing is only with gamma-ray isotope
It is illustrated for radioactive source radiotherapy apparatus.
In existing design, it is provided with the collimating aperture group of 5-6 group different pore size size 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 group hole can not meet the Treatment need of head tumor and extracranial tumors simultaneously.
It is different from the prior art, in the application, is provided with one group of collimating aperture group, the row of the collimating aperture group on a collimation body
Column mode is identical as the arrangement mode of radioactive source, each collimation body is independent can to dismount with supporter.To control
It, can be using the collimation body with 14 collimating aperture of φ 4- φ, so as to meet the treatment of single head tumor when treating head tumor
Therapeutic process；It, can be using the collimation body with 30 collimating aperture of φ 16- φ, so as to meet when treating extracranial tumors
The therapeutic process of single extracranial tumors treatment.
Collimator provided by the embodiment of the utility model, by making in the first connecting portion and collimation body 2 on supporter 1
Second connecting portion is detachably connected, and it is corresponding with the ray source position inside treatment head M to can be switched different collimation bodies 2, so that
The ray that radiographic source inside treatment head M issues is issued by the collimating channel 201 on different collimation bodies 2.Due to different collimations
Collimating channel 201 on body 2 is different, for the therapeutic purpose of different sizes and shapes, has by adaptability replacement corresponding quasi-
The beam of size and shape corresponding with therapeutic purpose can be obtained in the collimation body 2 of straight channel 201.As it can be seen that the utility model is real
The collimator for applying example offer can be replaced simultaneously under the premise of being not only restricted to the structure, size and spatial position for the treatment of head M
Multiple and different collimation bodies significantly improves adaptation so that an equipment can be used for head tumor treatment and extracranial tumors treatment
Property, it reduces costs simultaneously.
Based on above-mentioned it is found that collimator provided by the embodiment of the utility model is changed by the way that multiple collimation bodies 2 are arranged
Traditional large size and monolithic construction mode make multiple collimation bodies 2 with can by establishing smaller and single type tactic pattern
The mode of disassembly is installed on supporter 1, keeps the collimation body 2 on supporter 1 interchangeable.
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 that can choose the lesser collimation body 2 in 201 aperture of collimating channel and be installed on branch when treating head tumor
On support body 1；When for that can choose the biggish collimation body 2 in 201 aperture of collimating channel and be installed on supporter when treating extracranial tumors
On 1；When being used for treatment head M portion's functional disease, the smaller collimation body 2 in 201 aperture of collimating channel can also be chosen and be installed on
On supporter 1.As it can be seen that making the quantity of collimating channel 201 be no longer limited by standard by expanding 201 class of collimating channel otherwise
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 quasi-
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, the number of collimating channel 201 can be identical thereon for two different collimation bodies 2, but arrange
Mode is not identical；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 issues.In a kind of possible example, first connecting portion can be set one,
By alternatively selecting collimation body 2, it connect its second connecting portion with first connecting portion.
In alternatively possible example, multiple first connecting portions, each first connecting portion difference are provided on supporter 1
The second connecting portion for collimating body 2 with one is connect, for example, 2,3,4,5,6,7 have can be set in first connecting portion
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.
For the supporter 1 that multiple first connecting portions are set 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 for the situation of multiple collimation bodies 2 on supporter 1, in the premise for improving collimation operating efficiency
Under, in order to avoid frequently dismounting, can accordingly to change using which collimation body 2 and ray by the position of change supporter 1
Source alignment.It is exemplary, the collimator further include: 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 the movement of driving supporter, 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 on supporter 1 with circumferential fashion.
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
Include: position-limit mechanism, is moved for limiting collimation body 2 relative to supporter 1.
For example, as shown in Fig. 1, supporter 1 can 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, 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
It is loaded on 102 fixing sleeve of turntable in shaft 101, in this way, it is rotatablely arranged at shaft 101 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 on supporter 1 with array manner.Wherein, supporter
1 passes through the mobile radiographic source for being directed at any collimation body 2 in treatment head M.
Wherein, the move mode of supporter 1 can be translation, penetrate as long as can reach and be directed at each collimation body 2 can
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 being directed at any collimation body 2 in treatment head M.
Wherein, the move mode of supporter 1 can be translation.Illustratively, supporter 1 can be bar shaped, collimate body 2 along item
Shape direction is linearly distributed on supporter 1, by translating supporter 1 along bar shaped direction, that is, can reach 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, it can adopt and manually carry out, it can also be using automatically side
Formula carries out.It is precisely reliable based on moving process, and convenient for the purpose of control, above-mentioned movement can be carried out using automatic mode.
For the move mode of translation, for example, can be passed using lead-screw drive mechanism, rack gear, guide rail
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, can be using gear drive, belt rotating mechanism etc. 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 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 is able to drive the rotation of shaft 101, and then drives 102 turns of turntable in shaft 101
It is dynamic.
Wherein, diameter is greater than diameter where the root circle of driving gear 302 where the root circle of driven gear 301, with benefit
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 fixes the inner ring of first bearing 4
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 bracket 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 bracket 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 successively set in shaft 101
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 needs 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 guarantee its rotation
It is more time saving and energy saving, as shown in Fig. 7, shaft 101 can 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, above-mentioned 6 sleeve-shaped of bracket being fixed on treatment head M, such as attached drawing can be made
Shown in 7, can include: sequentially connected first sleeve section 601, second sleeve section 602 and 3rd sleeve section 603, wherein first
The inner wall of sleeve sections 601 is fixedly connected with the outer wall of first bearing 4, accommodates driven gear in the inner cavity of second sleeve section 602
301, and the aperture for expose portion driven gear 301 is offered on the side wall of second sleeve section 602 (referring to Fig. 7 corresponding the
The right part of two sleeve sections 602), by the aperture, 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 bracket 6.
Further, intermediate sleeve section can also be formed between first sleeve section 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 the rotation of shaft 101 can be made more smooth by the way that first bearing 4 and second bearing 5 is as above arranged, benefit
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,
It is caught in the outer ring boss of 101 upper end of shaft in annular groove, realizes limit in radial directions.Further, it utilizes
Fastener, such as screw, connect outer ring boss 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 method 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 clamping, 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 relationship 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 to collimate the disengaging of body 2.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 to be directed at stretched 2, it is ensured that it is steadily connected in appearance
It receives in slot.It is exemplary herein, related position-limit mechanism can include: the first position-limit mechanism, for limiting collimation body 2 along turntable
102 axial direction is mobile；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 in the first holding tank 103 by side mouth, 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: to be 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 is mobile, 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, lid are loaded on the opening of 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 the distance between two triangle fixture blocks 1054 being oppositely arranged are less than when being located at working position
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 the (compressed spring 1051 of triangle fixture block 1054
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 it is greater 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 guiding
The limit of column 1053.
For example, when a threaded connection is used, 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, can be realized and connect with the internal screw thread of first connecting portion.
Further, body 2 is collimated can include: be 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 greater 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, settable position-limit mechanism.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, it can 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, to be used for non-treatment shape
Ray is shielded under state.The shield 107 can be the partial region of supporter 1 itself, can be regarded as supporter 1 at this time
The mask bit of itself, or be removable installed in part thereon.Certainly, do not include the case where shield in supporter
Under, it can use rotary emission source or other shielding modes also to achieve the purpose that Guan Yuan.The application on supporter to be arranged
It is illustrated for shield.
When shield 107 is detachable, with the detachable connection method between supporter 1, can be connect with first
Detachable connection method 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, and difference is only that, 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, it collimates 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, shield 107 can be set one, also can be set it is multiple, when being provided with multiple, each shielding
Body 107 can be between two neighboring collimation body 2, to achieve the purpose that high-speed switch source.
It should be noted that the collimation body 2 of alignment radiographic source can be not only replaced when the position change of supporter 1,
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 utility model embodiment additionally provides a kind of radiotherapy apparatus, which includes above-mentioned be related to
Any collimator.
Based on above-mentioned collimator is used, radiotherapy apparatus provided by the embodiment of the utility model is used not only for body
The lesser head treatment of product, it can also be used to the biggish body portion treatment of volume, adaptability with higher.
The above is merely for convenience of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (14)
1. a kind of collimator, the treatment head (M) applied to radiotherapy apparatus, which is characterized in that the collimator includes: supporter
(1) and multiple independent collimation bodies (2)；
It is provided with collimating channel (201) on the collimation body (2), the collimating channel (201) on different collimations body (2) is no
Together；
It is provided with first connecting portion on the supporter (1), is 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 any 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 can be connect with the second connecting portion of collimation body (2) respectively.
3. collimator according to claim 2, which is characterized in that the collimator further include: 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: to be set to the treatment head
(M) shaft (101) on；
The turntable (102) being set on 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 include: 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 manner
On the supporter (1)；
The supporter (1) passes through the mobile radiographic source for being directed at any collimation body (2) 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 being directed at any collimation body (2) in the treatment head (M).
9. collimator according to claim 1, which is characterized in that the collimating channel (201) on different collimations body (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 method, including following connection type: clamping, key connection, pin joint, riveting, screw thread connect
It connects, magnetic connection.
11. -10 described in any item collimators according to claim 1, 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) are stated between the two neighboring collimation body (2).
14. a kind of radiotherapy apparatus, which is characterized in that the radiotherapy apparatus includes the described in any item collimations of claim 1-13
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979213.7U CN209475407U (en) | 2018-06-25 | 2018-06-25 | Collimator and radiotherapy apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820979213.7U CN209475407U (en) | 2018-06-25 | 2018-06-25 | Collimator and radiotherapy apparatus |
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| CN209475407U true CN209475407U (en) | 2019-10-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744315A (en) * | 2018-06-25 | 2018-11-06 | 西安大医数码科技有限公司 | Collimator and radiotherapy apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744315A (en) * | 2018-06-25 | 2018-11-06 | 西安大医数码科技有限公司 | Collimator and radiotherapy apparatus |
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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 Co-patentee after: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Patentee after: Xi'an Dayi Group 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 Co-patentee before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Patentee before: CYBERMED RADIOTHERAPY TECHNOLOGIES Co.,Ltd. |
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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 Co-patentee after: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Patentee after: CYBERMED RADIOTHERAPY TECHNOLOGIES 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 Co-patentee before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Patentee before: CYBERMED RADIOTHERAPY TECHNOLOGIES Co.,Ltd. |
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Address after: 710018 Room 10301, Unit 1, Unit 3, Floor 1, Building 28, Pioneer International City Business Center, 66 Fengcheng 12 Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee after: Xi'an Dayi Group Co.,Ltd. Country or region after: China Patentee after: Shenzhen Dayi Gamma Knife Technology Co.,Ltd. Address before: 710018 Room 10301, Unit 1, Unit 3, Floor 1, Building 28, Pioneer International City Business Center, 66 Fengcheng 12 Road, Xi'an Economic and Technological Development Zone, Shaanxi Province Patentee before: Xi'an Dayi Group Co.,Ltd. Country or region before: China Patentee before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. |