CN104225805B - A kind of radiation head of medical accelerator - Google Patents
A kind of radiation head of medical accelerator Download PDFInfo
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- CN104225805B CN104225805B CN201410404410.2A CN201410404410A CN104225805B CN 104225805 B CN104225805 B CN 104225805B CN 201410404410 A CN201410404410 A CN 201410404410A CN 104225805 B CN104225805 B CN 104225805B
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Abstract
The invention discloses a kind of radiation head of medical accelerator, including example of primary collimator, expansion device, micro-adjusting mechanism, the micro-adjusting mechanism includes: rotating seat, the first adjusting screw, the second adjusting screw, the first adjustment block and second adjustment block.The radiation head of medical accelerator provided by the invention is finely adjusted the position of expansion device using handle and adjusting screw, and adjustment process is simple；Expansion device is adjusted in the position of circumferencial direction by rotating seat, by adjusting block and screw adjusting expansion device is adjusted in radial position, the confined planes of all restricted expansion device moving direction of adjusting in each direction, can make expansion device adjust in place by preset position, position more accurate；In trim process, the central axis of axis and rotating seat that example of primary collimator goes out beam hole is overlapped always, will not generate launched field penumbra because of adjusting.
Description
Technical field
The present invention relates to radiotherapy tumor areas, and in particular to a kind of radiation head of medical accelerator.
Background technique
Medical accelerator is the particle accelerator device for being used to carry out tumour radiotherapy in biomedicine.Pass through microwave
Electron beam is accelerated, forms high-velocity electrons line, then heavy metal target is bombarded by high-velocity electron beam and generates X-ray.Facing
In bed application, non-uniform X-ray will increase skin dose, generate harm to patient, therefore, it is desirable to X-rays in radiation field size range
Interior lines matter is uniform.And the Energy distribution of the practical X-ray generated of medical accelerator and uneven, but integrated distribution is in incidence side
In the angular range of upward very little, the clinical requirement to ray energy distribution is not met, so with expansion device to X in accelerator
Ray carries out expansion.
The X-ray of different-energy corresponds to expansion device of different shapes, and needs to guarantee the central axis and X-ray of expansion device
Axis be overlapped.Since the axial location of X-ray can not determine in process of production, it is therefore desirable to which the position of expansion device has one
Fixed adjustability, to be suitable for the change in location of clinac ray center axis.
Prior art CN202409871U discloses a kind of clinac expansion filter regulating mechanism, such as Fig. 1
It is shown, including example of primary collimator 1 and expansion filter 6, set that there are four opposite sliding slot, expansion filters 6 in example of primary collimator 1
It is equipped with positioned at going out in beam hole for example of primary collimator 1, in example of primary collimator 1 for fixing consolidating for expansion filter 6 and regulating mechanism
Determine block 2, fixed block 2 is connect by fixing screws 3 with example of primary collimator, is equipped in example of primary collimator 1 and is used for separately adjustable expansion
Filter 6 GT and the direction AB four adjusting blocks 4, and by adjust screw 5 connect with fixed block 2, adjusting block 4 set on described in
It in sliding slot, and is in inclined-plane with 6 contact surface of expansion filter.
The regulating mechanism realizes the adjusting of expansion device in two directions by four adjusting blocks, but due to each side
To adjusting require to unclamp another direction and raise the adjusting screw saved, there is no limit expansions for expansion device moving direction
There is uncertainty in the direction that device is adjusted, can not adjust in place by preset position, therefore needs to adjust repeatedly, not convenient enough.
Summary of the invention
In order to solve the problems in the prior art, the invention proposes a kind of radiation head of medical accelerator, the radiation heads
Micro-adjusting mechanism including expansion device, adjustment process is simple, and positioning is more accurate, will not generate launched field penumbra because of adjusting.
In order to achieve the above object, a kind of radiation head of medical accelerator of the invention includes:
Example of primary collimator, the example of primary collimator include beam hole；
Expansion device, the expansion device into a cone shape, are located in the beam hole out；
Micro-adjusting mechanism, for adjusting the position of the expansion device；
Wherein, the micro-adjusting mechanism includes:
Rotating seat is set in the example of primary collimator, for adjusting the angle of the expansion device.
Optionally, the first circular groove, the central axis of first circular groove and institute are set in the example of primary collimator
The axis for stating out beam hole is overlapped, and the turning seat is in first circular groove, and along first circular groove
Inner wall rotation.
Optionally, the micro-adjusting mechanism include the first fixing screws and the second fixing screws, first fixing screws and
The rotating seat is fixed in the example of primary collimator by second fixing screws.
Optionally, first surface of revolution is arranged in the outer edge of the rotating seat, and first fixing screws and described second are consolidated
Determine screw and compress with first surface of revolution to contact.
Optionally, handle is set on the rotating seat, for controlling the rotation angle of the rotating seat.
Optionally, the handle is 2.
Optionally, the micro-adjusting mechanism further includes the first adjusting screw and second adjusts screw and the first adjustment block and the
Two adjustment blocks, the first adjusting screw pass through the first adjustment block and connect with the rotating seat, and described second adjusts screw
It is connect across the second adjustment block with the rotating seat.
Optionally, the second circular groove is set in the rotating seat, the central axis of second circular groove and it is described go out
The axis of beam hole is overlapped, and described first adjusts screw, the second adjusting screw, the first adjustment block and the second adjustment
Block is arranged in second circular groove.
Optionally, the first perforation of setting on the first adjustment block, described first, which adjusts screw, passes through first perforation,
It is threadedly coupled with the rotating seat, the diameter of first perforation makes the first adjusting screw be fastened on described first
In adjustment block, the first adjustment block is close to the described first screw head for adjusting screw.
Optionally, the second perforation of setting on the second adjustment block, described second, which adjusts screw, passes through second perforation,
It is threadedly coupled with the rotating seat, biperforate diameter makes the second adjusting screw be fastened on described second
In adjustment block, the second adjustment block is close to the described second screw head for adjusting screw.
Optionally, the second inclined-plane, the contact surface of the first adjustment block and second inclined-plane are set on the expansion device
At third inclined-plane, the contact surface on the second adjustment block and second inclined-plane is at the 4th inclined-plane.
Optionally, second inclined-plane is two planes, and second inclined-plane, the third inclined-plane and the described 4th are tiltedly
The tilt angle in face is identical.
Expansion device regulating mechanism in compared with the prior art, the beneficial effects of the present invention are:
1, the present invention is finely adjusted the position of expansion device using handle and adjusting screw, and adjustment process is simple；
2, expansion device is adjusted in the position of circumferencial direction by rotating seat, by adjusting block and adjusts screw adjusting expansion device
In radial position, the confined planes of all restricted expansion device moving direction of adjusting in each direction, can make expansion device by
Preset position is adjusted in place, is positioned more accurate；
3, in trim process, the axis of beam hole and rotating seat out of example of primary collimator is overlapped always, will not be because of adjusting
Generate launched field penumbra.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of clinac expansion filter regulating mechanism in the prior art
Fig. 2 is the structural schematic diagram of the radiation head of medical accelerator of the invention；
Fig. 3 is structural schematic diagram of the Fig. 2 along A-A section；
Fig. 4 is structural schematic diagram of the Fig. 2 along B-B section；
Fig. 5 is the partial enlarged view of the position A in Fig. 4；
Specific embodiment
The present invention will be further described by 2-5 with reference to the accompanying drawing.
As shown in Fig. 2, the radiation head of medical accelerator of the invention includes example of primary collimator 1, micro-adjusting mechanism, expansion device 2,
The micro-adjusting mechanism is arranged in example of primary collimator 1, and in conjunction with Fig. 3, example of primary collimator 1 includes beam hole, and expansion device 2 is tapered
Shape is located in the beam hole out, and is supported in example of primary collimator 1 by the micro-adjusting mechanism.
In conjunction with Fig. 2 and Fig. 3, the micro-adjusting mechanism, for adjusting the position of expansion device 2, including rotating seat 3, rotating seat 3
In in example of primary collimator 1, it is used to support expansion device 2.First circular groove is set in example of primary collimator 1, and described first is round
The central axis of groove is overlapped with the axis for going out beam hole of example of primary collimator 1, and rotating seat 3 is located in first circular groove, and
Along first circular groove inner wall around example of primary collimator 1 go out beam hole axis rotation, the central axis of rotating seat 3 and just
The axis for going out beam hole of grade collimator 1 is overlapped.
The micro-adjusting mechanism further includes the first fixing screws 4, the second fixing screws 5, and the first fixing screws 4 and second are fixed
Rotating seat 3 is fixed in example of primary collimator 1 by 5 collective effect of screw.Spiral shell is respectively set in corresponding position in example of primary collimator 1
Hole is screwed in for the first fixing screws 4 and the second fixing screws 5.As shown in figure 3, in the first revolution of outer edge setting of rotating seat 3
First fixing screws 4 and the second fixing screws 5 are screwed in corresponding screw hole, the first fixing screws 4 and the second fixing screws 5 by face 8
Screw head compress and contact with first surface of revolution 8, so that rotating seat 3 is pressed in example of primary collimator 1.In the present embodiment,
The shape of first surface of revolution 8 be relative rotation seat 3 inclined straight line around rotating seat 3 center axis rotation shape song
Face.
Rotating seat 3 is used to adjust the angle of expansion device 2.Handle 9, in this embodiment, handle 9 are set on rotating seat 3
It is two, and the distribution substantially symmetrical about its central axis about rotating seat 3, by rotating handles 9, rotating seat 3 is driven to rotate, adjust rotating seat
3 angle position in example of primary collimator.
The micro-adjusting mechanism further includes that the first adjusting screw 6 and second adjusts screw 7 and the first adjustment block 10 and second
Adjustment block 11, first, which adjusts screw 6 and second, adjusts substantially symmetrical about its central axis distribution of the screw 7 about rotating seat 3, on rotating seat 3
Corresponding first, which adjusts screw 6 and second, adjusts the position setting screw hole of screw 7, adjusts screw 6 and second for first and adjusts screw 7
It screws in.
Second circular groove, the axis of the central axis of second circular groove and the beam hole out are set in rotating seat 3
It is overlapped, the first adjusting screw 6, second adjusts screw 7, the first adjustment block 10 and second adjustment block 11 and is arranged at second circle
In connected in star.The first adjustment block 10 and second adjustment block 11 along second circular groove radial distribution, with expansion device 2
Side is in close contact.
As shown in figure 5, the second inclined-plane 12 is arranged in the side of expansion device, in this embodiment, the second inclined-plane is two planes,
The contact surface on the first adjustment block 10 and the second inclined-plane 12 is set as third inclined-plane 13, and second adjustment block 11 connects with the second inclined-plane 12
Contacting surface is set as the 4th inclined-plane 14, in this embodiment, the tilt angle and the second inclined-plane on third inclined-plane 13 and the 4th inclined-plane 14
12 tilt angle is identical.
The first perforation 15 of setting on the first adjustment block 10, first, which adjusts screw 6, passes through on the first perforation 15, with rotating seat 3
Correspondence screw hole connection, first perforation 15 diameter the first adjusting screw 6 is fastened on the first adjustment block 10, first
Adjustment block 10 is close to the first screw head for adjusting screw 6；The second perforation 16 of setting on second adjustment block 11, the second adjusting screw 7 are worn
The second perforation 16 is crossed, is connected with the corresponding screw hole on rotating seat 3, the diameter of the second perforation 16 makes the second adjusting screw 7
It is fastened on second adjustment block 11, second adjustment block 11 is close to the second screw head for adjusting screw 7, and such structure setting guarantees the
One adjustment block 10, second adjustment block 11 are stabilized in the first adjusting screw 6 and second respectively and adjust on screw 7, will not relatively respectively
Adjusting screw sliding.
Under this structure, it unclamps second and adjusts screw 7, screw 6, corresponding the first adjustment are adjusted by rotation first
Block 10 is moved along the central axis direction of rotating seat 3 together with the first adjusting screw 6, due to the interaction on inclined-plane, first
Adjustment block 10 pushes expansion device 2 along the radial direction of the second circular groove, i.e., first, which adjusts screw 6 and second, adjusts 7 line of screw
Direction it is mobile, same mode, when rotation second adjusts screw 7, corresponding second adjustment block 11 adjusts screw 7 with second
Moved together along the central axis direction of rotating seat, due to the interaction on inclined-plane, second adjustment block 11 push expansion device 2 along
The radial direction of second circular groove, i.e., first, which adjusts screw 6 and second, adjusts the direction movement of 7 line of screw, to realize
The radial position of whole device is adjusted.In order to guarantee the first adjustment block 10 and second adjustment block 11 in the central axis side along rotating seat 3
To there are enough spaces when movement, two square holes (figure is set in the position that the second circular groove bottom surface of rotating seat 3 corresponds to screw hole
Do not show), to increase the space that the first adjustment block 10 and second adjustment block 11 move.
In a particular application, the axial location of X-ray is it has been determined that by adjusting angle of the expansion device in example of primary collimator
Degree and radial position, the position of adjustable expansion device central axis, so that the axis weight of the central axis of expansion device and X-ray
It closes.
The radiation head of medical accelerator provided by the invention carries out the position of expansion device using handle and adjusting screw micro-
It adjusts, adjustment process is simple；Expansion device is adjusted in the position of circumferencial direction by rotating seat, by adjusting block and adjusts screw adjusting
In radial position, the confined planes of all restricted expansion device moving direction of adjusting in each direction can make expansion device
Whole device is adjusted in place by preset position, is positioned more accurate；In trim process, example of primary collimator goes out beam hole and rotating seat
Axis be overlapped always, will not because of adjust generate launched field penumbra.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Appoint
What those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the side of the disclosure above
Method and technology contents make many possible changes and modifications to technical solution of the present invention, or are revised as the equivalent reality of equivalent variations
Apply example.Therefore, anything that does not depart from the technical scheme of the invention according to the technical essence of the invention do above embodiments
Any simple modifications, equivalents, and modifications, all of which are still within the scope of protection of the technical scheme of the invention.
Claims (12)
1. a kind of radiation head of medical accelerator, comprising:
Example of primary collimator, the example of primary collimator include beam hole；
Expansion device, the expansion device into a cone shape, are located in the beam hole out；
Micro-adjusting mechanism, for adjusting the position of the expansion device；
It is characterized in that, the micro-adjusting mechanism includes rotating seat, it is set in the example of primary collimator, for adjusting the expansion
The angle of device.
2. a kind of radiation head of medical accelerator as described in claim 1, which is characterized in that setting in the example of primary collimator
First circular groove, the central axis of first circular groove are overlapped with the axis of the beam hole out, and the turning seat is in institute
It states in the first circular groove, and is rotated along the inner wall of first circular groove.
3. a kind of radiation head of medical accelerator as described in claim 1, which is characterized in that the micro-adjusting mechanism includes first
The rotating seat is fixed on institute by fixing screws and the second fixing screws, first fixing screws and second fixing screws
It states in example of primary collimator.
4. a kind of radiation head of medical accelerator as claimed in claim 3, which is characterized in that the outer edge of the rotating seat is set
First surface of revolution is set, first fixing screws and second fixing screws, which are compressed with first surface of revolution, to be contacted.
5. a kind of radiation head of medical accelerator as described in claim 1, which is characterized in that handle is arranged on the rotating seat
Hand, for controlling the rotation angle of the rotating seat.
6. a kind of radiation head of medical accelerator as claimed in claim 5, which is characterized in that the handle is 2.
7. the radiation head of medical accelerator as described in claim 1, which is characterized in that the micro-adjusting mechanism further includes the first tune
It saves screw and second and adjusts screw and the first adjustment block and second adjustment block, described first, which adjusts screw, passes through first tune
Monolith is connect with the rotating seat, and the second adjusting screw passes through the second adjustment block and connect with the rotating seat.
8. a kind of radiation head of medical accelerator as claimed in claim 7, which is characterized in that setting second in the rotating seat
Circular groove, the central axis of second circular groove with it is described go out beam hole axis is overlapped, the first adjusting screw, described
Second adjusting screw, the first adjustment block and the second adjustment block are arranged in second circular groove.
9. a kind of radiation head of medical accelerator as claimed in claim 8, which is characterized in that be arranged on the first adjustment block
First perforation, described first, which adjusts screw, passes through first perforation, is threadedly coupled with the rotating seat, first perforation
Diameter is fastened on the first adjusting screw on the first adjustment block, and the first adjustment block is close to described first
Adjust the screw head of screw.
10. a kind of radiation head of medical accelerator as claimed in claim 9, which is characterized in that set on the second adjustment block
The second perforation is set, described second, which adjusts screw, passes through second perforation, is threadedly coupled with the rotating seat, second perforation
Diameter the second adjusting screw is fastened on the second adjustment block, the second adjustment block is close to described the
Two adjust the screw head of screw.
11. a kind of radiation head of medical accelerator as claimed in claim 7, which is characterized in that the is arranged on the expansion device
Two inclined-planes, the contact surface on the first adjustment block and second inclined-plane is at third inclined-plane, the second adjustment block and described the
The contact surface on two inclined-planes is at the 4th inclined-plane.
12. a kind of radiation head of medical accelerator as claimed in claim 11, which is characterized in that second inclined-plane is two
Plane, and second inclined-plane, the third inclined-plane are identical with the tilt angle on the 4th inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410404410.2A CN104225805B (en) | 2014-08-15 | 2014-08-15 | A kind of radiation head of medical accelerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410404410.2A CN104225805B (en) | 2014-08-15 | 2014-08-15 | A kind of radiation head of medical accelerator |
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| CN104225805A CN104225805A (en) | 2014-12-24 |
| CN104225805B true CN104225805B (en) | 2019-10-08 |
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| CN201410404410.2A Active CN104225805B (en) | 2014-08-15 | 2014-08-15 | A kind of radiation head of medical accelerator |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267587B (en) * | 2016-08-18 | 2017-10-27 | 上海联影医疗科技有限公司 | Collimator positioner component |
| CN106267588B (en) * | 2016-08-18 | 2017-10-03 | 上海联影医疗科技有限公司 | Collimator positioner component and its localization method |
| CN109793995B (en) * | 2019-01-31 | 2020-09-29 | 新里程医用加速器(无锡)有限公司 | Accelerator radiation head equalizer structure capable of saving treatment space |
| CN112587811A (en) * | 2020-12-13 | 2021-04-02 | 中国航空工业集团公司北京航空精密机械研究所 | Tungsten-copper alloy homogenizing block for medical linear accelerator |
| DE102021203754B4 (en) * | 2021-03-31 | 2023-01-26 | Siemens Healthcare Gmbh | X-ray collimator interface module |
| CN114217406B (en) * | 2021-11-30 | 2024-02-09 | 歌尔光学科技有限公司 | Lens focusing mechanism, projection module and electronic equipment |
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|---|---|---|---|---|
| JP2003079753A (en) * | 2001-09-10 | 2003-03-18 | Hitachi Medical Corp | Radiotherapy equipment |
| JP2004041292A (en) * | 2002-07-09 | 2004-02-12 | Mitsubishi Electric Corp | Dose calculation method |
| CN202160328U (en) * | 2011-07-09 | 2012-03-07 | 山东新华医疗器械股份有限公司 | Medium energy electron linear accelerator |
| CN202409871U (en) * | 2011-12-31 | 2012-09-05 | 成都利尼科医学技术发展有限公司 | Adjusting mechanism for flattening filter of medical linear accelerator |
| CN103285526A (en) * | 2012-02-29 | 2013-09-11 | 伊利克塔股份有限公司 | Linear accelerators and related improvement |
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2014
- 2014-08-15 CN CN201410404410.2A patent/CN104225805B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003079753A (en) * | 2001-09-10 | 2003-03-18 | Hitachi Medical Corp | Radiotherapy equipment |
| JP2004041292A (en) * | 2002-07-09 | 2004-02-12 | Mitsubishi Electric Corp | Dose calculation method |
| CN202160328U (en) * | 2011-07-09 | 2012-03-07 | 山东新华医疗器械股份有限公司 | Medium energy electron linear accelerator |
| CN202409871U (en) * | 2011-12-31 | 2012-09-05 | 成都利尼科医学技术发展有限公司 | Adjusting mechanism for flattening filter of medical linear accelerator |
| CN103285526A (en) * | 2012-02-29 | 2013-09-11 | 伊利克塔股份有限公司 | Linear accelerators and related improvement |
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Address after: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
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Address after: 201807 2258 Chengbei Road, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co.,Ltd. Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: Shanghai Lianying Medical Technology Co.,Ltd. |
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