CN206081353U - Neutron treatment device - Google Patents
Neutron treatment device Download PDFInfo
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- CN206081353U CN206081353U CN201620699033.4U CN201620699033U CN206081353U CN 206081353 U CN206081353 U CN 206081353U CN 201620699033 U CN201620699033 U CN 201620699033U CN 206081353 U CN206081353 U CN 206081353U
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- 238000007493 shaping process Methods 0.000 claims abstract description 108
- 238000010884 ion-beam technique Methods 0.000 claims abstract description 20
- 238000009203 neutron therapy Methods 0.000 claims description 46
- 230000004308 accommodation Effects 0.000 claims description 26
- 230000033001 locomotion Effects 0.000 claims description 15
- 230000001678 irradiating effect Effects 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000006731 degradation reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
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- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000003760 hair shine Effects 0.000 abstract 1
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 12
- 229910052796 boron Inorganic materials 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 206010028980 Neoplasm Diseases 0.000 description 9
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- 238000006243 chemical reaction Methods 0.000 description 8
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
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- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
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- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a neutron treatment device, neutron production portion including the beam shaping body, in locating the beam shaping body, convey the ion beam to the tube bank of neutron production portion, make deflection electro -magnet and the collimater that ion beam transmission direction changed, beam shaping personally experiences sth. Part of the body and includes the slow fast body and wrap the reflector of establishing in the external week of slowly inviting, neutron production portion produces the neutron after the ion beam shines, delay the fast body subzone to the super -heated in of will slowing down from the neutron that neutron production portion produced, the reflector leads back skew neutron with the neutron intensity in the subzone among the improvement super -heated, the tube bank has the axis, shining of different angles is enough carried out around the axis rotation of tube bank to the irradiated body to the beam shaping physical stamina. Make whole neutron treatment device only need rotate self structure through setting up of support frame, the beam shaping body and deflecting magnet and can realize just that whole neutron treatment device carries out shining of different angles, simple structure, the operation is light, easily realizes.
Description
Technical field
The utility model is related to a kind of radioactive ray irradiation unit, especially a kind of neutron therapy device.
Background technology
Neutron therapy device used in boron neutron capture therapeutic system usually because need carries out multiple to irradiated body
The irradiation of angle, and in the past in order to neutron therapy device is generally fixed on certain huge structure by the irradiation for realizing this multi-angle
Whirligig on, the rotation of neutron therapy device is driven by the rotation of whirligig.It will be apparent that neutron therapy device sheet
The structure of body is just very huge, and the rotation to drive neutron therapy device by extraneous whirligig must need to compare neutron
The huger whirligig of therapeutic system could be realized, and meet the rotation of neutron therapy device and whirligig simultaneously
Very big space is also needed to, whole device is not only heavy but also applicability is not strong, is unfavorable for the miniaturization of neutron therapy device
Design.
Utility model content
In order to provide a kind of neutron therapy device that can carry out multi-angle neutron ray irradiation, one of the present utility model
Aspect provides a kind of neutron therapy device, and the neutron therapy device is including beam-shaping body, in beam-shaping body
Sub- generating unit, the tube bank that ion beam is sent to neutron generating unit, so that the deflection electromagnetism that changes of direction of beam transport
Iron and collimater, the beam-shaping body includes slow body and is packaged in the reflector in slow external week, and the neutron is produced
Portion produces neutron Jing after ion beam irradiation, and the slow body is by the neutron degradation produced from neutron generating unit to epithermal neutron energy
Area, the neutron that the reflector will deviate from leads back to carry the neutron intensity in high-epithermal neutron range, and the collimater is by neutron
The neutron that generating unit is produced carries out cover, and the neutron therapy device has the irradiation being irradiated to irradiated body empty
Between, the beam-shaping body is connected with the shield for shielding the radiation leaked out from beam-shaping body, the shield
Can shield to irradiating space as the motion of beam-shaping body is covered in irradiation space.
Further, the neutron therapy device also includes bracing frame, and the beam-shaping body is immobilizated on bracing frame, institute
State the recessed formation in surface of bracing frame and irradiate the accommodation space that is connected of space, the beam-shaping body, accommodation space and
Irradiation forms gap between space, and the shield is covered in the gap location.
Further, the shield includes at least two shielding parts, and the shielding part is located at the both sides of beam-shaping body,
One end of each shielding part is connected to the support frame as described above other end and is immobilizated in the beam-shaping body, when beam-shaping body fortune
When dynamic, the shielding part positioned at beam-shaping body side stretches, and the shielding part positioned at beam-shaping body opposite side shrinks.
Further, the shielding part is made up of the shielding part of multiple head and the tail phase clasps, when the shielding part trails,
The shielding part launches one by one and mutual clasp；When shielding part shrinks, the shielding part is stacked one by one.
Further, the end of the mutual clasp of the shielding part is provided with holding section, and the holding section can be in the shielding
The surface movement in portion is simultaneously positioned with the mutual clasp in adjacent holding section.
Further, the shielding part is arc-shaped setting, and the shielding part is in after the shielding part trails one by one
Arc-shaped.
Further, not less than the thickness of the shield, the width of the shield is or not the height of the accommodation space
Less than the width of the accommodation space.
Further, the shield is connected to the both sides of the beam-shaping body and arranges for monoblock type, when described
When beam-shaping body is moved, the shield can be rotated around support frame as described above and covered all the time jointly with beam-shaping body
Gap is formed between the beam-shaping body, accommodation space and irradiation space.
Further, width of the width of the shield not less than the accommodation space.
Further, support frame as described above includes the first supporting part, and first supporting part is provided with the first track, the beam
Shaping body is immobilizated in the first track, the institute that first track is connected from the recessed formation in surface of the first supporting part with irradiation space
Accommodation space is stated, first supporting part is arc-shaped setting, and first track is the circle with the same center of circle of the first supporting part
Arcuation is arranged.
Compared with prior art, the utility model has the advantages that：The utility model by beam-shaping body,
The gap formed between accommodation space and irradiation space arranges shield, and neutron therapeutic system is penetrated during irradiation treatment
The radiation that beam shaping body is leaked out is shielded, also beneficial to the overall appearance of neutron therapy device.
Other side of the present utility model also reveal that a kind of neutron therapy device for being capable of rotary irradiation, the neutron
Therapeutic system includes beam-shaping body, the neutron generating unit in beam-shaping body, ion beam is sent to neutron generating unit
Tube bank, cause the deflection electromagnet that changes of direction of beam transport and collimater, the beam-shaping body includes slow
Fast body and the reflector in slow external week is packaged in, the neutron generating unit produces neutron Jing after ion beam irradiation, described slow
By the neutron degradation produced from neutron generating unit to default power spectrum, the neutron that the reflector will deviate from leads back to default to improve body
The neutron that neutron generating unit is produced is carried out cover, the neutron therapy dress by the neutron intensity in power spectrum, the collimater
Put with the irradiation space being irradiated to irradiated body, the tube bank has axis, and the beam-shaping body can be around tube bank
Axis rotate so as to the irradiated body in irradiating space carries out the irradiation of different angles.
Further, the neutron therapy device also includes bracing frame, and the beam-shaping body is immobilizated in bracing frame, beam
Shaping body is around the also motion on bracing frame while tube bank axis rotation.
Further, the 3rd tube bank that the tube bank includes the first tube bank and is connected with the first tube bank, the axis includes
The first axle of the first tube bank and the second axis of the 3rd tube bank, the beam-shaping body can be around the first axle of the first tube bank
Or the 3rd tube bank second axis rotate.
Further, the first angle, the size energy of first angle are formed between first tube bank and the 3rd tube bank
It is enough to change to adjust the position relationship of beam-shaping body and irradiated body in irradiation space.
Further, support frame as described above includes the first supporting part, and irradiation is spatially located at below the first supporting part, described first
Supporting part is provided with the first track, and the beam-shaping body is immobilizated in the first track of bracing frame, first track it is recessed in
So as to being formed and irradiating the accommodation space that space is connected, the collimater extends into irradiation space to support from accommodation space.
Further, first supporting part is arc-shaped setting, and first track is and the same circle of the first supporting part
The arc-shaped of the heart is arranged, arc-shaped surface recessed formation of first track from the first supporting part.
Further, the tube bank also includes the second tube bank, and described second restrains and be connected to neutron generating unit, described second
The second angle is formed between tube bank and the 3rd tube bank, being sized to of second angle changes to adjust beam-shaping body and shine
Penetrate the position relationship of irradiated body in space.
Further, the deflection magnet is immobilizated in bracing frame, and the deflection magnet includes being located at the first tube bank and the 3rd
The first deflection magnet between tube bank and the second deflection magnet between the second tube bank and the 3rd tube bank, the first pipe
The transmission direction of beam intermediate ion beam is transmitted into the 3rd tube bank after being changed by the first deflection magnet, the 3rd tube bank intermediate ion
The transmission direction of beam is transmitted to the second tube bank after being changed by the second deflection magnet, and the ion beam irradiation in the second tube bank is extremely
Neutron generating unit, produces the neutron beam being irradiated for neutron ray device.
Further, support frame as described above be additionally provided with for support the second deflection magnet the second supporting part, described second
Support part is provided with the second track, and when beam-shaping body is moved in the first track, second supporting part is transported in the second track
It is dynamic.
Further, support frame as described above is additionally provided with the 3rd supporting part, and first deflection magnet is immobilizated in the 3rd supporting part,
First tube bank is fixed between accelerator and the first deflection magnet, and second tube bank is connected to beam-shaping body and second
Between deflection magnet, the 3rd tube bank is connected between the first deflection magnet and the second deflection magnet.
Compared with prior art, the utility model has the advantages that：The utility model is whole by bracing frame, beam
The setting of body and deflection magnet makes whole neutron therapy device only to rotate self structure and just can realize whole neutron therapy
Device carries out the irradiation of different angles, and simple structure operates light, it is easy to accomplish.
Description of the drawings
Fig. 1 is not provided with the schematic diagram of bracing frame for the utility model；
Fig. 2 is the sectional view of the utility model neutron generating unit；
Fig. 3 is that the utility model arranges the schematic diagram after bracing frame；
Fig. 4 is the schematic diagram that the utility model embodiment beam-shaping body is immobilizated in the first track；
Fig. 5 is the top view that beam-shaping body is retained in the track of supporting part first；
Fig. 6 is the schematic diagram of another angle of the utility model；
Fig. 7 is schematic diagram when the utility model the first angle a1 changes；
Fig. 8 is schematic diagram when the utility model the second angle a2 changes
Fig. 9 is the another embodiment schematic diagram of the utility model bracing frame；
Figure 10 is the sectional view of shield in a kind of embodiment of the utility model；
Figure 11 is the state diagram of shielding part when the utility model beam-shaping body moves to a certain position in the first track；
Figure 12 is the state diagram of shielding part when the utility model beam-shaping body moves to another location in the first track；
Figure 13 is top view when shield shown in Fig. 8 stretches；
Figure 14 is the sectional view of shield in the utility model another embodiment；
Figure 15 is the state diagram of shield when beam-shaping body moves to a certain position shown in Figure 14；
Figure 16 is the top view of shield shown in Figure 10.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
A kind of application of the neutron exposure as means of effective treating cancer in recent years gradually increases, wherein with boron neutron
Capture treatment is most commonly seen, supplies the neutron of boron neutron capture treatment and can be supplied by nuclear reactor or accelerator.The application's
By taking the treatment of accelerator boron neutron capture as an example, the basic module of accelerator boron neutron capture treatment is generally included for right embodiment
Accelerator, neutron generating unit and hot removal system and beam-shaping body that charged particle (such as proton, deuteron) is accelerated,
Wherein accelerate the effect of charged particle and metal neutron generating unit to produce neutron, according to required neutron yield rate and energy, can provide
Accelerate the characteristics such as charged particle energy and size of current, the materialization of metal neutron generating unit to select suitable nuclear reaction,
The nuclear reaction for often coming into question has7Li(p,n)7Be and9Be(p,n)9B, both reactions are all the endothermic reaction.Two kinds of nuclear reactions
Energy threshold is respectively 1.881MeV and 2.055MeV, because the preferable neutron source of boron neutron capture treatment is keV energy grades
Epithermal neutron, if being only slightly taller than the proton bombardment lithium metal neutron generating unit of threshold value using energy in theory, can produce relative
The neutron of low energy, is not necessary to too many slow process and just can be used for clinic, but two kinds of neutrons of lithium metal (Li) and beryllium metal (Be)
Generating unit is not high with the proton-effect section of threshold energy, is to produce sufficiently large neutron flux, generally from higher-energy
Proton is causing nuclear reaction.
Boron neutron capture treatment (Boron Neutron Capture Therapy, BNCT) is using boracic (10B) medicine
There is the characteristic of high capture cross section to thermal neutron, by10B(n,α)7Li neutron captures and nuclear fission reaction are produced4He and7Li two
Individual heavy burden charged particle, the average energy of two charged particles is about 2.33MeV, and with High Linear (Linear Energy are shifted
Transfer, LET), short range feature, the linear energy transfer of α particles and range be respectively 150keV/ μm, 8 μm, and7Li weights
Lotus particle is then 175keV/ μm, 5 μm, and the integrated range of two particle is approximately equivalent to a cell size, therefore for organism is caused
Radiation injury can be confined to cell level, be gathered in when boracic drug selectivity in tumour cell, the appropriate neutron of arranging in pairs or groups
Source is penetrated, just the purpose that tumour cell is killed in local can be reached on the premise of not normal tissue causes too major injury.
No matter the neutron source of boron neutron capture treatment from nuclear reactor or accelerator charged particle and target nuclear reaction,
Be all mixed radiation field, the i.e. beam for producing contains the neutron of low energy to high energy, photon；For the boron neutron of deep tumor is caught
Treatment is obtained, in addition to epithermal neutron, remaining radiation content is more, cause the ratio of the non-selective dosage deposition of normal structure
Example is bigger, therefore these can cause the radiation of unnecessary dosage to try one's best reduction.Except air beam quality factor, to know more about
The dosage distribution that neutron is caused in human body, head mathematics prosthese model carries out dosimeter used in embodiment of the present utility model
Calculate, and the design reference that neutron beam is used as with prosthese beam quality factor, will be described in more detail below.
International Atomic Energy Agency (IAEA) penetrates for the neutron source of clinical boron neutron capture treatment given five air
Beam quality factor advises that this five suggestions can be used for the quality of the different neutron sources of comparison, and is provided with producing way as selecting neutron
Reference frame when footpath, design beam-shaping body.This five suggestions are as follows respectively：
Epithermal neutron beam flux Epithermal neutron flux>1x109n/cm2s
Fast neutron pollutes Fast neutron contamination<2x10-13Gy-cm2/n
Photon contamination Photon contamination<2x10-13Gy-cm2/n
Thermal and epithermal neutron flux ratio thermal to epithermal neutron flux ratio<0.05
Middle electron current and flux ratio epithermal neutron current to flux ratio>0.7
Note：Epithermal neutron energy area hankers subzone less than 0.5eV between 0.5eV to 40keV, and fast-neutron range is more than
40keV。
Epithermal neutron beam flux：
Boracic drug concentration has together decided on the clinical treatment time in neutron beam flux and tumour.If tumour boracic medicine
The enough height of concentration, for the requirement of neutron beam flux just can be reduced；If conversely, boracic drug concentration is low in tumour, needing high pass
Measure epithermal neutron to give tumour enough dosage.IAEA is per second every square centimeter for the requirement of epithermal neutron beam flux
Epithermal neutron number be more than 109, the neutron beam under this flux can substantially control for current boracic medicine treatment
Time, short treatment time, also can be compared with effectively utilizes boracic medicine in addition to advantageous to patient's positioning and comfort level in one hour
Thing is in the intra-tumor limited holdup time.
Fast neutron pollutes：
Because fast neutron can cause unnecessary normal tissue dose, therefore it is regarded as pollution, this dosage size and neutron
Energy is proportionate, therefore the content of the reduction fast neutron that should try one's best in neutron beam design.Fast neutron pollution definition is unit
The adjoint fast neutron dosage of epithermal neutron flux, IAEA is less than 2x10 to the suggestion that fast neutron pollutes-13Gy-cm2/n。
Photon contamination (gamma-ray contamination)：
Gamma-rays belongs to and wear by force radiation, can non-selectively cause the organized dosage deposition of institute on course of the beam, therefore
The exclusive requirement that gamma-rays content is also neutron beam design is reduced, gamma-ray contamination definition is adjoint for unit epithermal neutron flux
Gamma-rays dosage, suggestions of the IAEA to gamma-ray contamination is less than 2x10-13Gy-cm2/n。
Thermal and epithermal neutron flux ratio：
Because thermal neutron decay speed is fast, penetration capacity is poor, most of energy deposition is removed in skin histology into after human body
The Several Epidermal Tumors such as melanocytoma need to be used outside the neutron source that thermal neutron is treated as boron neutron capture, for deep layers such as brain tumors
Tumour should reduce thermal neutron content.IAEA is less than 0.05 to the suggestion of thermal and epithermal neutron flux ratio.
Neutron streaming and flux ratio：
Neutron streaming represents the directionality of beam with flux ratio, and ratio is bigger to represent that tropism is good before neutron beam, high
The neutron beam of front tropism can be reduced because of the neutron normal surrounding tissue dosage that causes of diverging, also improve in addition can treat depth and
Pendulum pose gesture elasticity.IAEA is more than 0.7 to neutron streaming and flux ratio suggestion.
Fig. 1 is the application neutron therapy device 100, and the neutron therapy device 100 includes beam-shaping body 10, located at penetrating
Neutron generating unit 11 in beam shaping body 10, by ion beam P from accelerator 200 transmit to neutron generating unit 11 tube bank 20 and
The deflection magnet 30 for making the transmission direction of the intermediate ion beam P of tube bank 20 change.The beam-shaping body 10 includes slow body 12
And slow external 12 weeks reflector 13 is packaged in, the neutron generating unit 11 is embedded in the slow body 12 (with reference to Fig. 2).
The beam-shaping body 10 is exported with beam, and the beam outlet place end face is provided with collimater 40.
With reference to Fig. 3, the neutron therapy device 100 also includes the irradiation space 50 for being irradiated to irradiated body M
With for supporting the bracing frame 60 of beam-shaping body 10.Support frame as described above 60 includes the first supporting part 61, first supporting part
The first track 611 is provided with 61, the track 611 of first supporting part 61 and first is set to into same circle for the ease of manufacture
The convex structure of the heart.In other embodiments, the first supporting part 61 and the first track 611 can be arranged to other shapes
Shape, is more changed with the position to the relative exposure space 50 of beam-shaping body 10, is not just illustrated herein.It is described to penetrate
Beam shaping body 10 is immobilizated in the first track 611 and can move in the first track 611, so that the control of neutron therapy device
The irradiated body M penetrated in space 50 carries out the irradiation of different angles.
With reference to Fig. 4 to Fig. 6, as a kind of embodiment, first track 611 is arranged on into the circular arc of the first supporting part 61
Outer surface.The irradiation space 50 is located at the lower section of the first supporting part 61, circle of first track 611 from the first supporting part 61
The accommodation space 612 that the recessed formation of arc outer surface is connected with irradiation space 50.The outer surface of the reflector 13 is extended with position
In the holding parts 131 of the both sides of beam-shaping body 10, the holding parts 131 are immobilizated in first track 611 and along the first rail
Road 611 is moved, and the collimater 40 is extended in irradiation space 50 from accommodation space 612.Certainly, for whole neutron therapy dress
The Miniaturization Design put, can not arrange holding parts on the surface of reflector, and make beam-shaping body be provided with the end of collimater 40
Face coordinates with the first track 611, and the end face is directly retained on the first track 611 and by end face in the first track 611
Motion makes neutron therapy device 100 that the irradiation of different angles is carried out to irradiated body M.
Used as another embodiment, the irradiation space 50 can be not arranged in the lower section of the first supporting part 61, and position
In the side of the first supporting part 61, holding parts extend from beam-shaping body 10 and are located at the side of beam-shaping body 10, described
Holding parts are retained in the first track 611 and move in the first track 611.Now the beam of beam-shaping body 10 exports direction
Irradiation space 50 ', when beam-shaping body 10 is moved in the first track 611, neutron therapy device 100 can be to irradiating space
Irradiated body (not shown) in 50 ' carries out the irradiation of different angles.
First track can also be arranged on the front end face of first supporting part.The reflexive beam of the holding parts it is outer
Surface is extended and is located at the side of beam-shaping body, and the holding parts are immobilizated in the first track and transport in the first track
It is dynamic.Certainly, also a lot of other embodiments, are such as not provided with holding parts and directly partial reflector are immobilizated in into first track
In serve as holding parts, as long as can make reflector along the first track motion so as to realize neutron therapy device to irradiate space in
Irradiated body carries out the irradiation of different angles, is not just illustrated one by one herein.
The tube bank 20 has axis, during the tube bank 20 is including being fixed on the first tube bank 21 of accelerator 200, being fixed on
3rd tube bank 22 of sub- generating unit 11 and the second tube bank 23 being connected between the first tube bank 21 and the 3rd tube bank 22.The axle
Line includes second axis II of the tube banks of first axle I and second 23 of the first tube bank 21.The deflection magnet 30 includes that first is inclined
Turn the deflection magnet 32 of magnet 31 and second.One end of first tube bank 21 is connected to accelerator 200, and the other end is connected to first
Deflection magnet 31；One end of second tube bank 23 is connected to the first deflection magnet 31, and the other end is connected to the second deflection magnet
32；One end of 3rd tube bank 22 is connected to the first deflection magnet 31, and the other end is connected to the second deflection magnet 32 and is connected to
Between first tube bank 21 and the second tube bank 23.The beam-shaping body 10 can be around the first axle I or the of the first tube bank 21
Second axis II of three tube banks 22 rotate to change the irradiating angle of 10 pairs of irradiated bodies irradiated in spaces 50 of beam-shaping body.
The transmission direction of the first 21 intermediate ion beam P of tube bank is transmitted to the second tube bank 23 after being deflected by the first deflection magnet 31, the
The transmission direction of two 23 intermediate ion beam P of tube bank is transmitted to the 3rd after being deflected by the second deflection magnet 32 and restrains the 22, the 3rd
Ion beam P in tube bank 22 is transmitted to neutron generating unit 11 and then produced irradiated body is carried out for neutron therapy device 100
The neutron beam needed during irradiation.
Support frame as described above 60 is additionally provided with the second supporting part 62 positioned at the top of the first supporting part 61, second deflection magnet
32 are immobilizated in the second supporting part 62, and second supporting part 62 is provided with the second deflection magnet 32 of permission as beam-shaping body 10 is transported
The second dynamic track 621.The concrete structure of second track 621 may be referred to hereinbefore be used to hold beam-shaping body 10 simultaneously
The structure of the first track 611 of the motion of beam-shaping body 10 is allowed, is just no longer illustrated herein.Second supporting part 62 can also
As shown in fig. 7, being arranged on the rear of the first supporting part 61.
The beam-shaping body 10 is moved according to the different irradiating angles that irradiated body needs in the first track 611, when
Beam-shaping body 10 around first axle I rotate when, the 3rd tube bank 22 is moved with beam-shaping body 10, the second deflection magnet
32 move under the drive of the motion of the 3rd tube bank 22 in the second track 621, are irradiated with realizing 100 pairs, neutron therapy device whereby
50 irradiated body carries out the irradiation of different angles in space.Certainly, the beam-shaping body 10 can also be arranged to around
The structure that second axis II of two tube banks 23 are rotated also can be achieved on irradiated body in 10 pairs of irradiation spaces 50 of beam-shaping body
Multi-angle irradiation, herein just no longer describe in detail.
As shown in Figure 7 and Figure 8, the first angle a1, the second tube bank are formed between the tube bank 23 of first tube bank 21 and second
23 and the 3rd form the size of the second angle a2, the first angle a1 and the second angle a2 between tube bank and can change, can
According to actual needs any one in the first angle a1 and the second angle a2 or two being arranged to into angular dimension can change
The structure of change, to reduce the limitation of the irradiating angle to beam-shaping body 10.
The neutron therapy device 100 also has for fixing the 3rd supporting part 63 of the first deflection magnet 31, and described the
Three supporting parts 63 can be with as shown in figure 9, be set directly on bracing frame 60, it is also possible to as shown in figure 3, being directly anchored to ground.
The rotary course of whole neutron therapy device in the application embodiment is described in detail below.
First, direction of illumination is determined according to the concrete condition of irradiated body, makes beam whole according to the direction of illumination after determination
Body 10 moves to the position that can carry out the angular illumination in the first track 611, and the 3rd tube bank 22 is with beam-shaping
Body 10 moved to and positioned after a certain particular location；
The position of position, the position of the 3rd tube bank 22 and the second tube bank 23 then, according to the first tube bank 21 determines the
The yawing moment of one deflection magnet 31 and the second deflection magnet 32.Because the position of the first tube bank 21 is fixed, the 3rd tube bank
22 position is determined according to the movement position of beam-shaping body 10, and the second tube bank 23 is located at the first tube bank 21 and the 3rd tube bank 22
Between and the second deflection magnet 32 and the first deflection magnet 31 be each attached to restrain 20 one end, therefore second tube bank 23 position can
Be determined by the position of the first tube bank 21 and the 3rd tube bank 22 after the optional position that is obtained in that in space, after determination
The position of three sections of tube banks determines the yawing moment of the first deflection magnet 31 and the second deflection magnet 32, transmits autoacceleration device 200
Ion beam P out is transmitted to neutron generating unit 11.
The transmission direction of the first 21 intermediate ion beam P of tube bank is transmitted to second pipe after the first deflection magnet 31 changes
Beam 23, the transmission direction of the second 23 intermediate ion beam P of tube bank is transmitted to the 3rd pipe after changing via the second deflection magnet 32 again
Beam 22, the ion beam P direct irradiations in the 3rd tube bank 22 produce neutron beam to neutron generating unit 11, and the neutron beam is to being shone
Beam is irradiated.
Although it is pointed out that herein described slow beam-shaping body itself have function of shielding, in order to right
Irradiated body obtains more preferable shield effectiveness during being irradiated treatment, it is also possible to which extra setting is shielded to irradiating space
The shield for covering.Especially when first track 611 is the recessed formation in surface from the first supporting part 61 and the irradiation phase of space 50
During 612 such case of accommodation space of connection (with reference to Fig. 5), beam-shaping body 10, accommodation space 612 and irradiation space 50 it
Between form gap, on the one hand this gap can affect the overall appearance of neutron therapy device, on the other hand can also increase irradiation process
The leakage of middle radiation, it is therefore desirable to which setting is covered in accommodation space 612 and shields to irradiating space 50 in irradiation process
The shield 70 (70 ') for covering.
With reference to diagram, the concrete structure of shield 70 (70 ') is illustrated, the shield 70 (70 ') can
Move with the motion of beam-shaping body 10 and shield to irradiating space 50.
Ginseng Figure 10 and Figure 11, the shield 70 include two can along beam-shaping body 10 the direction of motion stretch or
The shielding part 71 of contraction.The shielding part 71 is respectively positioned at the both sides of the beam-shaping body 10, one end of each shielding part 71
It is connected to the other end of support frame as described above 60 and is connected to the beam-shaping body 10.
The shielding part 71 is made up of the shielding part 72 of multiple head and the tail phase clasps, the end of the mutual clasp of the shielding part 72
Holding section 73 is provided with, the holding section 73 can move and mutually detain with adjacent holding section on the surface of the shielding part 72
Hold.When shielding part 71 shrinks, the shielding part 72 is stacked one by one；When the shielding part 71 trails, the screen
Cover portion 72 launch one by one and mutually clasp and position adjacent two shielding part 72.The shielding part 71 is the partially unfolded, is exactly
Say that as shown in Figure 10 partly shielding effect portion 72 trails, partly shielding effect portion 72 is still stacked, in a word, the shielding part 72 with
The motion for beam-shaping body 10 is stretched or is stacked.
As shown in Figure 13 and Figure 14, when relative first bracing frame 61 of beam-shaping body 10 is moved, positioned at beam-shaping body
The shielding part 71 of 10 sides does contractile motion and gradually stacks, and the shielding part 71 for being located at the opposite side of beam-shaping body 10 does and stretches
Move and gradually extend.When the shielding part 72 is stacked, the shielding part 71 connects away from the part in irradiation space 50
The beam-shaping body 10 is connected to, the shielding part 71 is partially attached to support frame as described above 60 near irradiation space 50.
As it was noted above, the first track 611 is arc-shaped setting, by each single shielding part 72 in present embodiment
It is arranged to arc-shaped to reach more preferable shield effectiveness.After the shielding part 72 trails one by one, the whole shielding part 71 is in
Arc-shaped.
In order to farthest reduce the leakage for radiating in irradiation process, the height H1 of the accommodation space 612 is set
The thickness (non-label) not less than the shield 70 is set to, the thickness of the shield 70 refers to that multiple shielding parts 72 are stacked on
Gross thickness together.Also, the width W2 of the shield 70 is not less than into the width W1 of the accommodation space 612.
Figure 15 show the another embodiment of the application shield 70 '.The shield 70 ' is connected to the beam
The both sides of shaping body 10 and form previously described irradiation space 50.The shield 70 ' arranges for monoblock type and can
(as shown in figure 16) is rotated around support frame as described above 61 with the motion of beam-shaping body 10, so as to enter to the irradiation space 50
Row shielding.In present embodiment, the shield 70 ' is contained in the accommodation space 612, the width W2 ' of the shield 70 '
Not less than the width W1 of the accommodation space 612, certainly, the thickness of the shield 70 ' is it can also be provided that be not more than described
The height H1 of accommodation space 612.
Arranging for shield 70 (70 ') on the one hand can shield the radiation leaked out by beam-shaping body 10, the opposing party
Face can be covered in irradiation space 50, between accommodation space 612 and beam-shaping body 10 formed gap in, beneficial to integrated beauty
See.
Furthermore it is also possible to the shield outside arrange can away from shield or near and can be held in
The barrier shield (non-label) of the shield.When the barrier shield is away from shield, beam-shaping body 10 is according to the actual requirements
Rotate on support frame as described above 60 to obtain suitable irradiation position, the shield is transported with the motion of beam-shaping body 10
Move and be covered in all the time 50 pairs, irradiation space irradiation space 50 to shield；When the beam-shaping body 10 is located at properly
Irradiation position after, the barrier shield near and be held in the shield, 10 pairs of irradiation spaces 50 of the beam-shaping body
It is irradiated, the shield is shielded to irradiating space 50.
On the one hand the setting of barrier shield provides support force for shield, has shared the part support that bracing frame is born
Power；On the other hand radiation that can be to producing during irradiation while shield is shielded is shielded, and enhances screen
Cover effect.
Arc-shaped as herein described not only includes certain section of circular shape on circle, by multistage straight line, rule or does not advise
Curve then connects the shape of the similar circular arc to be formed and belongs to arc-shaped described herein.
It should be appreciated that it is used herein such as " have ", "comprising" and " including " term are not precluded from one or many
The presence or addition of individual other compositions or its combination.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization.It can be applied to completely various suitable fields of the present utility model.For those skilled in the art,
It is easily achieved other modification.Therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (10)
1. a kind of neutron therapy device, it is characterised in that the neutron therapy device includes beam-shaping body, located at beam-shaping
Neutron generating unit in body, ion beam is sent to the tube bank of neutron generating unit, so that what direction of beam transport changed
Deflection electromagnet and collimater, the beam-shaping body includes slow body and is packaged in the reflector in slow external week, described
Neutron generating unit produces neutron Jing after ion beam irradiation, and the slow body is by the neutron degradation produced from neutron generating unit to superthermal
Neutron energy range, the neutron that the reflector will deviate from leads back to put forward the neutron intensity in high-epithermal neutron range, the collimater
The neutron that neutron generating unit is produced is carried out into cover, the neutron therapy device has the photograph being irradiated to irradiated body
Space is penetrated, the beam-shaping body is connected with the shield for shielding the radiation leaked out from beam-shaping body, the screen
Covering body can shield as the motion of beam-shaping body is covered in irradiation space to irradiating space.
2. neutron therapy device according to claim 1, it is characterised in that the neutron therapy device also includes supporting
Frame, the beam-shaping body is immobilizated on bracing frame, and the surface of support frame as described above is recessed to form the appearance being connected with irradiation space
Between being empty, between the beam-shaping body, accommodation space and irradiation space gap is formed, the shield be covered in it is described between
At gap.
3. neutron therapy device according to claim 2, it is characterised in that the shield includes at least two shieldings
Part, the shielding part is located at the both sides of beam-shaping body, and one end of each shielding part is connected to support frame as described above other end fixing
In the beam-shaping body, when the beam-shaping body is moved, the shielding part positioned at beam-shaping body side stretches, positioned at penetrating
The shielding part of beam shaping body opposite side shrinks.
4. neutron therapy device according to claim 3, it is characterised in that the shielding part is by multiple head and the tail phase clasps
Shielding part is constituted, and when the shielding part trails, the shielding part launches one by one and mutual clasp；When shielding part shrinks,
The shielding part is stacked one by one.
5. neutron therapy device according to claim 4, it is characterised in that the end of the mutual clasp of the shielding part is provided with
Holding section, the holding section can move on the surface of the shielding part and position with the mutual clasp in adjacent holding section.
6. neutron therapy device according to claim 4, it is characterised in that the shielding part is that arc-shaped is arranged, and works as institute
It is in arc-shaped to state the shielding part after shielding part trails one by one.
7. neutron therapy device according to claim 3, it is characterised in that the height of the accommodation space is not less than described
The thickness of shield, the width of the shield is not less than the width of the accommodation space.
8. neutron therapy device according to claim 2, it is characterised in that the shield is connected to the beam-shaping
The both sides of body and for monoblock type setting, when the beam-shaping body move, the shield can with beam-shaping body be total to
Formed between the beam-shaping body, accommodation space and irradiation space with rotating and being covered in all the time around support frame as described above
Gap.
9. neutron therapy device according to claim 8, it is characterised in that the width of the shield is not less than the appearance
Width between being empty.
10. neutron therapy device according to claim 2, it is characterised in that support frame as described above includes the first supporting part, institute
State the first supporting part and be provided with the first track, the beam-shaping body is immobilizated in the first track, and first track is supported from first
The accommodation space that the recessed formation in surface in portion is connected with irradiation space, first supporting part is arc-shaped setting, described
First track is to arrange with the arc-shaped in the same center of circle of the first supporting part.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699033.4U CN206081353U (en) | 2016-07-04 | 2016-07-04 | Neutron treatment device |
| EP16908054.6A EP3456381B1 (en) | 2016-07-04 | 2016-12-16 | Neutron therapy device |
| PCT/CN2016/110396 WO2018006550A1 (en) | 2016-07-04 | 2016-12-16 | Neutron therapy device |
| JP2018568668A JP6761876B2 (en) | 2016-07-04 | 2016-12-16 | Neutron therapy device |
| TW106207221U TWM549081U (en) | 2016-07-04 | 2017-05-19 | Neutron therapy device |
| TW106207223U TWM558633U (en) | 2016-07-04 | 2017-05-19 | Neutron therapy device |
| US16/212,995 US10556127B2 (en) | 2016-07-04 | 2018-12-07 | Neutron therapy apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620699033.4U CN206081353U (en) | 2016-07-04 | 2016-07-04 | Neutron treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206081353U true CN206081353U (en) | 2017-04-12 |
Family
ID=58465909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620699033.4U Active CN206081353U (en) | 2016-07-04 | 2016-07-04 | Neutron treatment device |
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| Country | Link |
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| CN (1) | CN206081353U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107569778A (en) * | 2016-07-04 | 2018-01-12 | 南京中硼联康医疗科技有限公司 | Neutron therapy device |
| CN109464752A (en) * | 2017-09-07 | 2019-03-15 | 南京中硼联康医疗科技有限公司 | Neutron capture treatment system |
-
2016
- 2016-07-04 CN CN201620699033.4U patent/CN206081353U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107569778A (en) * | 2016-07-04 | 2018-01-12 | 南京中硼联康医疗科技有限公司 | Neutron therapy device |
| CN107569778B (en) * | 2016-07-04 | 2024-03-22 | 南京中硼联康医疗科技有限公司 | Neutron therapeutic device |
| CN109464752A (en) * | 2017-09-07 | 2019-03-15 | 南京中硼联康医疗科技有限公司 | Neutron capture treatment system |
| CN109464752B (en) * | 2017-09-07 | 2024-02-09 | 南京中硼联康医疗科技有限公司 | Neutron capture therapy system |
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