CN1069839C - Radiotherapeutic equipment - Google Patents
Radiotherapeutic equipment Download PDFInfo
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- CN1069839C CN1069839C CN 96111356 CN96111356A CN1069839C CN 1069839 C CN1069839 C CN 1069839C CN 96111356 CN96111356 CN 96111356 CN 96111356 A CN96111356 A CN 96111356A CN 1069839 C CN1069839 C CN 1069839C
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Abstract
The present invention puts forward a radiotherapeutic device which comprises a radioactive source, a swinging frame 3, a rotary frame 2 and a support frame 4 fixed to ground, wherein the radioactive source is fixed to the rotary frame 2; the center line of a ray bundle of the radioactive source vertically intersects with a rotary axis of the rotary frame 2 on an isocenter point 7. The rotary frame 2 connected with the swinging frame 3 can rotate around the rotary axis relatively to the swinging frame 3; the swinging frame 3 arranged on the fixing support frame 4 can swing back and forth relatively to the support frame 4 by passing round a swinging axis 21 of the isocenter point 7; the swinging axis 21 is vertical with the rotary axis and is parallel to ground. Thus, the scanning of the isocenter point 7 of the radioactive ray extends from a sector to a conical area; dosage for a focus point is large; dosage for a normal tissue point is small, and thus, the present invention can kill lesion tissues and protect normal tissues.
Description
The present invention relates to radiotherapy unit, the radiotherapy unit that especially adopts ray to shine from the multi-angle multipath.
When carrying out radiotherapy, in order in focus, to be formed centrally heavy dose of focusing effect, reduce damage simultaneously to health tissues, people usually make ray that focus is carried out the irradiation of multi-angle multipath, when irradiation, ray is aimed at a public focus all the time, makes focus be positioned at this focus, like this, dosage at affected area is bigger, and less at the dosage at normal structure place, thus reach deadly pathological tissues, guarantee the purpose of normal structure.Chinese invention patent CN1109791A discloses a kind of radiocurable track-changeable radiator with single source that is used for, it has adorned an arc track frame that is used to install the source body on the swing frame, swing and source body moving in arc track by frame, formation source bulk phase is for the two-way circular motion of focus point, make the path radiation pathological tissues of lonizing radiation to change, reduced radiation damage, directly improved therapeutic effect health tissues.But this device structurally has a lot of weak points.In this scheme, the arc track frame that radioactive source is installed is fixed on the outstanding steel structure support in swing frame upper end, the part that the arc track frame stretches out with respect to the swing frame is longer, and radioactive source is heavier, when frame is swung, can produce asymmetric amount of deflection with respect to focus point, influence the focus precision; For structure and stability and fastness, have to load onto sizable counterweight in swing frame lower end, this just makes the huge heaviness of whole device, and, because steel structure support and counterweight are with respect to the moment of the transmission central shaft of the swing frame homonymy in the swing frame, in frame when swing,, device itself can't balance, must take certain method that device is fixed on the body of wall.
The objective of the invention is defective, provide a kind of focus precision higher, the simpler radiotherapy unit of structure at existing multi-angle multipath radiotherapy unit.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of radiotherapy unit comprises radioactive source, swing frame, rotary frame and is fixed in the support on ground.Radioactive source is fixed on the rotary frame, makes the rotating bobbin of the central axis of the beam that radioactive source sends and rotary frame perpendicular, and meets at isocenter point.Rotary frame and swing frame link, and rotary frame can be walked around the rotation axis rotation of isocenter point with respect to the swing frame.The swing frame is installed on the fixed support, and the swing frame can move back and forth with respect to the axis of oscillation that support is walked around isocenter point, and axis of oscillation is vertical with rotation axis, and parallel to the ground.
The invention has the advantages that compared with prior art, because radioactive source is fixed, the irradiation of the arc of ray isocenter point is to realize by the rotation of rotary frame with respect to the swing frame, during rotation therapy distortion less, improved and rotated isocentric precision; Because the various piece of radioactive source is evenly distributed on the rotary frame, can reduce required counterweight, and, when the swing of swing frame, each load on the rotary frame is isostatic with respect to isocenter point moment, device itself can keep balance, and therefore, whole installation weight is light, simple in structure.
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the front view of the embodiment of radiotherapy unit of the present invention;
Fig. 2 is an A-A cutaway view embodiment illustrated in fig. 1.
Fig. 3 is the multi-angle multipath irradiation sketch map of radiotherapy unit of the present invention.
With reference to Fig. 1, Fig. 2, among the embodiment of radiotherapy unit of the present invention, it is the medical electronic linear accelerator 1 of 15MeV that radioactive source is selected beam energy for use, also comprises rotary frame 2, swing frame 3 and is fixed in the parts such as support 4 on ground.
Electron linear accelerator 1 comprises electron gun and accelerating tube, treatment head, focus coil and lead screen, power source, microwave transmission system, focusing system, magnetic deflection system, vacuum system, monitoring system and constant temperature system, the above-mentioned part of electron linear accelerator 1 all is fixed on the rotary frame 2.Rotary frame 2 is disk-like structures made from manganese steel plate, and its outer rim place is the rigidity of aliform structure with increase rotary frame 2, and the inner edge place is that circulus is with the internal ring as swivel bearing.The line of electron linear accelerator 1 is drawn after 270 ° of deflection enters treatment 10 from accelerating tube, makes the beam centre line of treatment 10 and the rotation axis 22 vertical isocenter points 7 that meet at of rotary frame 2.The layout of the operating position of miscellaneous part should consider to make accelerator performance the best as far as possible, and makes the load weight distributing equilibrium, thereby reduces required counterweight.
Be connected with bearing 13 between swing frame 3 and the fixed support 4, bearing inner ring is fixed on the swinging axle 6, and outer race is on fixed support 4.Swing frame 3 can do with respect to the axis of oscillation 21 that support 4 is walked around isocenter point 7 ± 30 ° swing, and axis of oscillation 21 is vertical with rotation axis 22, and parallel to the ground.Like this, the scanning of lonizing radiation isocenter point 7 just expands in the cone zone from a sector.Swing frame 3 adopts 15 auxiliary driving of worm gear 14 worm screws, and worm gear 14 is fixed on the swinging axle 6; Step motor drive, motor are fixed on the support, also can fix on the ground.The two shoe brake that expands in adopting is braked.Because during the swing of swing frame, each load on the rotary frame is isostatic with respect to isocenter point moment, device is easy to be fixed by support.
With reference to Fig. 3; when treating; make focus be positioned at isocenter point 7; rotary frame 2 is walked around rotation axis 22 rotations of isocenter point 7 with respect to swing frame 3; swing frame 3 simultaneously and walk around axis of oscillation 21 swings of isocenter point 7 with respect to support 4; like this; scope by control rotation and swing; form the lonizing radiation scanning area that matches with the focus shape; speed by control rotation and swing; formation is to the irradiation of the suitable dose of focus, thereby reaches deadly pathological tissues, the purpose of protection normal structure.
Other equipment can also be installed on rotary frame 2 simultaneously,, make diagnosis, location and treatment have identical isocenter point 7, thereby reach the effect of comprehensive diagnos and positioning means on same frame as diagnostic device CT or positioning equipment simulated positioner etc.
Claims (6)
1. radiotherapy unit comprises radioactive source, rotary frame (2), swing frame (3) and is fixed in the support (4) on ground; Swing frame (3) is installed on the support (4), and swing frame (3) can move back and forth with respect to the axis of oscillation (21) that support (4) walk around isocenter point (7), and axis of oscillation (21) is parallel to the ground; It is characterized in that: radioactive source is fixed on the rotary frame (2), makes the centrage of the beam that radioactive source sends and the rotation axis (22) of rotary frame (2) be vertically intersected on isocenter point (7), and rotation axis (22) is vertical with axis of oscillation (21); Rotary frame (2) and swing frame (3) link, and rotary frame (2) can rotate around rotation axis (22) with respect to swing frame (3).
2. radiotherapy unit according to claim 1 is characterized in that: described radioactive source is electron linear accelerator (1).
3. radiotherapy unit according to claim 1 and 2, it is characterized in that: between described swing frame (3) and the rotary frame (2) radial-thrust bearing is housed, on swing frame (3), motor is housed, walks around rotation axis (22) rotation of isocenter point (7) with respect to swing frame (3) in order to drive rotary frame (2).
4. radiotherapy unit according to claim 1 and 2, it is characterized in that: between described swing frame (3) and the support (4) bearing is housed, on ground or support (4) motor is housed, the axis of oscillation (21) of walking around isocenter point (7) with respect to support (4) in order to driving swing frame (3) moves back and forth.
5. radiotherapy unit according to claim 1 and 2 is characterized in that: on rotary frame (2) diagnostic device is installed simultaneously.
6. radiotherapy unit according to claim 1 and 2 is characterized in that: on rotary frame (2) positioning equipment is installed simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96111356 CN1069839C (en) | 1996-08-13 | 1996-08-13 | Radiotherapeutic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96111356 CN1069839C (en) | 1996-08-13 | 1996-08-13 | Radiotherapeutic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1166367A CN1166367A (en) | 1997-12-03 |
| CN1069839C true CN1069839C (en) | 2001-08-22 |
Family
ID=5121089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96111356 Expired - Lifetime CN1069839C (en) | 1996-08-13 | 1996-08-13 | Radiotherapeutic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1069839C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732803B (en) * | 2008-11-14 | 2011-07-13 | 西安航天动力机械厂 | Cantilever gyration mechanism of gamma-ray source |
| CN101992410B (en) * | 2009-08-20 | 2013-08-21 | 徐宪良 | Roll grinding machine based on H-shaped machine body |
| CN102188779B (en) * | 2011-05-26 | 2015-01-14 | 清华大学 | Swing platform device for tumor therapy and accurate targeted tumor therapy equipment |
| CN103071241B (en) * | 2011-10-25 | 2015-12-30 | 苏州雷泰医疗科技有限公司 | Stereotactic radiotherapeutic device |
| CN103977504B (en) * | 2014-06-06 | 2017-01-11 | 赵立敏 | Cobalt 60 gamma ray head radioactive equipment |
| US10441816B2 (en) * | 2015-12-31 | 2019-10-15 | Shanghai United Imaging Healthcare Co., Ltd. | Radiation therapy system |
| WO2019023901A1 (en) * | 2017-07-31 | 2019-02-07 | 西安大医数码科技有限公司 | Method and apparatus for controlling radiotherapy device, and radiotherapy system |
| CN109513116A (en) * | 2017-09-18 | 2019-03-26 | 胡逸民 | A kind of ray intensity modulated therapy device |
| CN109224320B (en) * | 2018-10-23 | 2024-05-28 | 四川大学华西医院 | Accelerator non-coplanar radiotherapy device based on composite double rotating rack |
| CN109998575A (en) * | 2018-12-29 | 2019-07-12 | 佛山瑞加图医疗科技有限公司 | A kind of linear accelerator Isocenter irradiation system in confined space equipment |
| CN116251304A (en) * | 2019-12-30 | 2023-06-13 | 上海联影医疗科技股份有限公司 | Radiation therapy system |
-
1996
- 1996-08-13 CN CN 96111356 patent/CN1069839C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1166367A (en) | 1997-12-03 |
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Owner name: SHENZHEN CITY AOWO MEDICINE NEW TECHNOLOGY DEVELO Free format text: FORMER OWNER: AOWO INTERNATIONAL SCIECE + TECHNOLOGY DEVELOPMENT CO., LTD. SHENZHEN Effective date: 20070216 |
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Address after: Guangdong city of Shenzhen province Futian District Honghua road Futian Free Trade Zone Changping Business Building Room 2515 Patentee after: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Address before: Room 2203, electronic science and technology building, No. 30 Shennan Road, Shenzhen, Guangdong Patentee before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. |
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Address after: Nanshan District Shenzhen City, Guangdong Province, 518057 North Road No. 9116 Fu technology building block B 8 room 801-803805-811 Patentee after: Shenzhen Aowo Medical New Technology Development Co.,Ltd. Address before: 518038 Guangdong city of Shenzhen province Futian District Honghua road Futian Free Trade Zone Changping Business Building Room 2515 Patentee before: Shenzhen Aowo Medical New Technology Development Co.,Ltd. |
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Owner name: XI AN DAYI DIGITAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHENZHEN OUR NEW MEDICAL TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20150226 |
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