CN103990232A - Fine ray collimator - Google Patents
Fine ray collimator Download PDFInfo
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- CN103990232A CN103990232A CN201410113078.4A CN201410113078A CN103990232A CN 103990232 A CN103990232 A CN 103990232A CN 201410113078 A CN201410113078 A CN 201410113078A CN 103990232 A CN103990232 A CN 103990232A
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Abstract
The invention relates to a fine ray collimator in the medical equipment field. The collimator is composed of a shell (1) and a block (2) fixedly arranged in the shell (1), wherein a through hole (3) is arranged in the center of the block, the block (2) is characterized by being in a multi-stage structure, blocks (2) in each stage are all in a cylindrical shape, an externally convex frustum (4) is arranged on the top part of each block (2), an internally convex cone groove (5) is arranged in the bottom of each block (2), and thus an inter-grade conical surface positioning (6) can be formed through the cooperation of an internally convex cone groove (5) of an upper grade block and an externally convex frustum (4) of a lower grade block between two neighbored blocks. In the prior art, a fine ray collimator is difficult to process, and the invention solves the problem. The provided fine ray collimator can reach a minimal error of 1 mm or less for high-energy X-rays, can applied to a precision radiotherapy system to carry out radiotherapy treatment on a small target area of lesions. At the same time the processing and installation of collimator blocks with a large length/diameter ratio and micro hole diameter are easy.
Description
Affiliated technical field
The present invention relates to field of medical, be specially a kind of meticulous ray collimator.
Background technology
Noinvasive radiotherapy is one of important means of carrying out oncotherapy.Radiotherapy is that to radiate physics, radiobiology be basis, and the comprehensively general knowledge such as clinical, oncology, surgery, internal medicine, image is utilized the means of radiation cure disease, is mainly used to treat malignant tumor and some benign diseases.The object of tumour radiotherapy is the therapeutic dose to tumor target area maximum, and the exposure dose minimum that normal surrounding tissue and organ are subject to, to improve the Partial controll rate of tumor, reduces the complication of normal structure, namely pinpoint radiotherapy.Reach this object, carrying out radiotherapy when work, must accomplish " four essences ", be i.e. Precise Diagnosis, accurately design, accurately location and accurate treatment.Along with the arrival in accurate radiotherapy epoch, also there is great variety in radiotherapy apparatus in recent years, and the fineness of equipment obtains larger raising.Wherein, Chinese patent CN201310115139 disclosed " robot noinvasive radiotherapy system " is a kind of robot therapy system based on the guiding of six degree of freedom G arm realtime imaging.This system, under the guiding of G arm image, both can be carried out the conformal modulating radiotherapy of tumor, also has non-invasive therapy cardiovascular disease, and as atrial fibrillation, treatment kidney neuroregulation disease, as the ability of hypertension, diabetes etc." robot noinvasive radiotherapy system " is carrying out treating cardiovascular disease and kidney neuroregulation disease noinvasive radiocurable time, because the diameter of cardiovascular and kidney nerve only has several millimeters, the blood vessel that exists diameter to change from 1mm to 5mm such as renal artery pipe clump, in order to carry out accurate radiotherapy, reduce the infringement of critical tissue and organ around, high-energy X-ray beam need to be controlled to 0.1-0.5mm left and right.And prior art is mentioned all only for imaging system, the radiation source of imaging system belongs to the X-ray of mental retardation, γ light etc., and for radiocurable be all X-ray that energy is higher etc.In addition, the thickness of the absorbing material being used for the treatment of need to reach larger size, and such as for 6MVX light, absorbing material tungsten alloy, more than its thickness need to reach 600mm, could meet the clinical requirement of " robot noinvasive radiotherapy system ".But existing process technology processing diameter is less than 0.5mm, the absorbing material that length is greater than 600mm is the comparatively difficulty of meticulous ray collimator block of tungsten, lead etc.
Summary of the invention
The object of the invention is to process the comparatively defect of difficulty of meticulous ray collimator block in order to overcome prior art, provide one high-energy X-ray can be collimated to below 1mm, meet accurate radiotherapy system and carry out the radiotherapy of little target area pathological changes, simultaneously the meticulous ray collimator of big L/D ratio micro-aperture block handling ease.
The object of the invention is to be achieved through the following technical solutions:
Meticulous ray collimator of the present invention is by shell (1) and be fixed on block (2) formation in shell (1), block (2) center is processed with through hole (3), it is characterized in that block (2) is multilevel hierarchy, blocks at different levels (2) are cylindrical, top is processed with evagination frustum (4), bottom is processed with interior concave cone groove (5), between adjacent blockers (2), forms inter-stage conical surface location (6) by the interior concave cone groove (5) of higher level's stop bottom and the evagination frustum (4) at subordinate's block top.
In such scheme, in described block (2), the block (2) of most end one-level, top is processed with evagination frustum (4), and bottom does not have interior concave cone groove.
In such scheme, the front end of described shell (1) is provided with the platform matching with the evagination frustum (4) at block (2) top, and first order block (2) is stuck in the front end of shell (1); Most end one-level block (2) is located by alignment pin (7) with shell (1) end, be connected by screw and be fixed in shell (1) end, or be fixed in shell (1) end by back-up ring (8), back-up ring (8) is connected with shell (1) end by screw thread.
In such scheme, the front end of described shell (1) is provided with ring flange (9), and ring flange (9) is connected with accelerator end.
In such scheme, described block (2) refers to 2 ~ 4 level structures for multilevel hierarchy.
In such scheme, the shape of the through hole (3) at described block (2) center, for a kind of or wherein combination of two kinds in cylindrical, prismatic and taper, through hole (3) end diameter at previous stage block (2) center is more than or equal to the point diameter of the through hole (3) at next stage block (2) center.
In such scheme, described block (2) is made up of ray absorbent material.
In such scheme, described ray absorbent material is lead material or tungsten alloy material.
Meticulous ray collimator of the present invention adopts the design of multistage block, big L/D ratio block is divided into the multistage block of the conical surface location that adopts high-axiality, high-energy X-ray can be collimated to below 1mm, meet accurate radiotherapy system and carry out the radiotherapy of little target area pathological changes, overcome the problem that collimates block processing difficulties in big L/D ratio micro-aperture collimator simultaneously.The conical surface location of high-axiality is installed easily multistage block, can guarantee that the multilevel center through hole of 0.1mm is aligned with each other.
To sum up, meticulous ray collimator of the present invention has overcome prior art and has processed the comparatively defect of difficulty of meticulous ray collimator, the meticulous ray collimator providing can be collimated to high-energy X-ray below 1mm, meet accurate radiotherapy system and carry out the radiotherapy of little target area pathological changes, the collimation block of big L/D ratio micro-aperture processing simultaneously and installation are easily.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is block schematic diagram of the present invention.
Fig. 3 is block schematic perspective view of the present invention.
Fig. 4 is schematic perspective view of the present invention.
Fig. 5 is the schematic perspective view that the present invention is added with flange.
Fig. 6 is the schematic diagram of the embodiment of the present invention three.
Fig. 7 is the schematic diagram of the embodiment of the present invention five.
In accompanying drawing, 1: shell; 2: block; 3: through hole; 4: evagination frustum; 5: interior concave cone groove; 6: inter-stage conical surface location; 7: alignment pin; 8: back-up ring; 9: ring flange.
Specific embodiment
Be described in further detail the present invention below in conjunction with drawings and Examples, but the present invention is not limited only to described embodiment.
Embodiment mono-
The meticulous ray collimator of this example as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, formed by shell 1 and the block 2 being fixed in shell 1, block 2 centers are processed with through hole 3, it is characterized in that block 2 is for secondary structure, blocks 2 at different levels are cylindrical, top is processed with evagination frustum 4, and bottom is processed with interior concave cone groove 5, between adjacent blockers 2, forms inter-stage conical surface location 6 by the interior concave cone groove 5 of higher level's stop bottom and the evagination frustum 4 at subordinate's block top.
The block 2 of most end one-level, top is processed with evagination frustum 4, and bottom does not have interior concave cone groove.
The front end of shell 1 is provided with the platform matching with the evagination frustum 4 at block 2 tops, and first order block 2 is stuck in the front end of shell 1; Most end one-level block 2 is located by alignment pin 7 with shell 1 end, is connected by screw and is fixed in shell 1 end, or be fixed in shell 1 end by back-up ring 8, and back-up ring 8 is connected with shell 1 end by screw thread.
The front end of shell 1 is provided with ring flange 9, and ring flange 9 is connected with accelerator end.
The shape of the through hole 3 at block 2 centers, for cylindrical, through hole 3 end diameters at previous stage block 2 centers equal the point diameter of the through hole 3 at next stage block 2 centers.
Block 2 is made up of ray absorbent material.
Ray absorbent material is tungsten alloy material.
Embodiment bis-
The meticulous ray collimator of this example is made up of ray absorbent material except block 2, and ray absorbent material is outside lead material, and all the other are with embodiment mono-.
Embodiment tri-
As shown in Figure 6, except block 2 is tertiary structure, all the other are with embodiment mono-for the meticulous ray collimator of this example.
Embodiment tetra-
The meticulous ray collimator of this example except block 2 be quarternary structure, all the other are with embodiment mono-.
Embodiment five
The meticulous ray collimator of this example as shown in Figure 7, removes the shape of the through hole 3 at block 2 centers, and outside the combination for cylindrical and taper, all the other are with embodiment tri-.
Embodiment six
The meticulous ray collimator of this example is except the shape of the through hole 3 at block 2 centers, and outside four prism type, all the other are with embodiment mono-.
Embodiment seven
The meticulous ray collimator of this example is except the taper that is shaped as of the through hole 3 at block 2 centers, and through hole 3 end diameters at previous stage block 2 centers are greater than outside the point diameter of through hole 3 at next stage block 2 centers, and all the other are with embodiment mono-.
Claims (8)
1. a meticulous ray collimator is made up of shell (1) and the block (2) that is fixed in shell (1), block (2) center is processed with through hole (3), it is characterized in that block (2) is multilevel hierarchy, blocks at different levels (2) are cylindrical, top is processed with evagination frustum (4), bottom is processed with interior concave cone groove (5), between adjacent blockers (2), forms inter-stage conical surface location (6) by the interior concave cone groove (5) of higher level's stop bottom and the evagination frustum (4) at subordinate's block top.
2. meticulous ray collimator according to claim 1, is characterized in that in described block (2), the block (2) of most end one-level, and top is processed with evagination frustum (4), and bottom does not have interior concave cone groove.
3. meticulous ray collimator according to claim 1, is characterized in that the front end of described shell (1) is provided with the platform matching with the evagination frustum (4) at block (2) top, and first order block (2) is stuck in the front end of shell (1); Most end one-level block (2) is located by alignment pin (7) with shell (1) end, be connected by screw and be fixed in shell (1) end, or be fixed in shell (1) end by back-up ring (8), back-up ring (8) is connected with shell (1) end by screw thread.
4. meticulous ray collimator according to claim 1, is characterized in that the front end of described shell (1) is provided with ring flange (9), and ring flange (9) is connected with accelerator end.
5. meticulous ray collimator according to claim 1, is characterized in that described block (2) refers to 2 ~ 4 level structures for multilevel hierarchy.
6. meticulous ray collimator according to claim 1, it is characterized in that the shape of the through hole (3) at described block (2) center, for a kind of or wherein combination of two kinds in cylindrical, prismatic and taper, through hole (3) end diameter at previous stage block (2) center is more than or equal to the point diameter of the through hole (3) at next stage block (2) center.
7. meticulous ray collimator according to claim 1, is characterized in that described block (2) is made up of ray absorbent material.
8. meticulous ray collimator according to claim 7, is characterized in that described ray absorbent material is lead material or tungsten alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410113078.4A CN103990232A (en) | 2014-03-25 | 2014-03-25 | Fine ray collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410113078.4A CN103990232A (en) | 2014-03-25 | 2014-03-25 | Fine ray collimator |
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| Publication Number | Publication Date |
|---|---|
| CN103990232A true CN103990232A (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410113078.4A Pending CN103990232A (en) | 2014-03-25 | 2014-03-25 | Fine ray collimator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477793A (en) * | 2015-12-24 | 2016-04-13 | 河南科技大学第一附属医院 | Nuclear radiation treatment source container structure |
| CN106504812A (en) * | 2016-12-08 | 2017-03-15 | 清华大学 | Collimator, radiation-emitting device and inspection equipment |
| CN107315022A (en) * | 2017-07-21 | 2017-11-03 | 中国地质大学（武汉） | A kind of X-ray collimation location adjusting device and system |
| CN110755757A (en) * | 2019-09-27 | 2020-02-07 | 南京航空航天大学 | Piezoelectric-driven integrated high-precision variable-field collimator |
-
2014
- 2014-03-25 CN CN201410113078.4A patent/CN103990232A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477793A (en) * | 2015-12-24 | 2016-04-13 | 河南科技大学第一附属医院 | Nuclear radiation treatment source container structure |
| CN105477793B (en) * | 2015-12-24 | 2018-01-26 | 河南科技大学第一附属医院 | One seed nucleus brachytherapy sources structure of container |
| CN106504812A (en) * | 2016-12-08 | 2017-03-15 | 清华大学 | Collimator, radiation-emitting device and inspection equipment |
| CN106504812B (en) * | 2016-12-08 | 2018-10-09 | 清华大学 | Collimator, radiation-emitting device and inspection equipment |
| US10939892B2 (en) | 2016-12-08 | 2021-03-09 | Nuctech Company Limited | Collimator, radiation emitting assembly and inspection apparatus |
| CN107315022A (en) * | 2017-07-21 | 2017-11-03 | 中国地质大学（武汉） | A kind of X-ray collimation location adjusting device and system |
| CN110755757A (en) * | 2019-09-27 | 2020-02-07 | 南京航空航天大学 | Piezoelectric-driven integrated high-precision variable-field collimator |
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| C06 | Publication | ||
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Owner name: YAO JIN WEI CHONGGAO Effective date: 20141009 Owner name: WU DAKE Free format text: FORMER OWNER: CHENGDU WEIMING TECHNOLOGY CO., LTD. Effective date: 20141009 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 610000 CHENGDU, SICHUAN PROVINCE TO: 610041 CHENGDU, SICHUAN PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20141009 Address after: 2 610041 yuan 7, Section 8, No. four, No. 55, South Renmin Road, Chengdu, Sichuan, Wuhou District Applicant after: Wu Dake Applicant after: Yao Jin Applicant after: Wei Chonggao Address before: 108, room 6, building 1480, hi tech incubator Park, north section of Tianfu Road, Chengdu hi tech Zone, Sichuan, 610000 Applicant before: Chengdu Weiming Technology Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140820 |