CN201331586Y - Radioactive source measuring device - Google Patents
Radioactive source measuring device Download PDFInfo
- Publication number
- CN201331586Y CN201331586Y CNU2008202358463U CN200820235846U CN201331586Y CN 201331586 Y CN201331586 Y CN 201331586Y CN U2008202358463 U CNU2008202358463 U CN U2008202358463U CN 200820235846 U CN200820235846 U CN 200820235846U CN 201331586 Y CN201331586 Y CN 201331586Y
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- radioactive source
- radioactive
- source device
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Abstract
The utility model relates to a radioactive source measuring device, which comprises a source carrier, a collimating mechanism and a shield. The source carrier is placed in the shield. A radioactive source is put in the source carrier. A plurality of beam apertures are arranged in the collimating mechanism. The device additionally comprises a transmission mechanism. The transmission mechanism is connected with the source carrier and can drive the source carrier to move, so as to keep the radioactive source in the source carrier to move in the shield and between the entrances of the beam apertures of the collimating mechanism. The utility model has the advantages that the conversion between the open beam state and the close beam state of the radioactive source is realized in the measuring process through moving the radioactive source in the source carrier, no radioactive source is required to be loaded and unloaded, the irradiation can be done automatically, the occupied area required for measuring a single source is small, the time for measuring is short, the measurement cost is low, the auxiliary time of the single source measurement is shortened and the measuring efficiency of the single source is improved.
Description
Technical field
The utility model relates to a kind of measurement mechanism of radiotherapy equipment, relates in particular to a kind of dose field measurement device that is used for radiotherapy equipment.
Background technology
At present; radiotherapy equipment is according to the stereotactic radiotherapy principle; the beam that adopts a plurality of radioactive sources to produce accurately is gathered in the mode of public focus; make local lesion produce biological effect because of the irradiation of beam focusing point; tissue to greatest extent protects the health; destroy focus; reach the purpose of treatment disease; during treatment; the dosage field that the beam focusing point place of radiotherapy equipment forms must be consistent with the shape of focus; the emittance of radioactive source is concentrated in the focus zone; under the condition that satisfies the focus therapeutic dose; reduce the suffered radiation damage of focus surrounding health tissue as far as possible; these data that just require the dosage field of the planning system output of radiotherapy equipment to distribute are consistent with actual conditions, and the prerequisite of the correct modeling of this planning system is the basic data of single-source dose field measurement.
The Chinese patent publication number is that single-source dose field measurement method that is independent of main frame and the device of CN 1302291C discloses a kind of radioactive source measurement mechanism, this device comprises: dolly, source heat chamber, mechanical arm, radioactive source, penetrate the source body, collimation mechanism, bearing support, wherein, penetrate the source body, collimation mechanism and bearing support are connected as a single entity, during use, survey instrument is placed on the bearing support, penetrate the source body, collimation mechanism and bearing support are placed on the dolly, and together place in the source heat chamber, utilize source heat chamber and indoor mechanical arm to realize loading and unloading radioactive source, the security protection of switch beam and beam.
Owing to must outside source heat chamber, finish the installation of survey instrument when this device is measured in single source, in source heat chamber, finish radioactive source radiation, finish the transportation of survey instrument by dolly, in measuring process, realize the loading and unloading of radioactive source by mechanical arm, measure that the place that need take is big, Measuring Time is long, efficient that measure is low so finish single source.
The utility model content
The purpose of this utility model provides a kind of radioactive source measurement mechanism, and its technical matters that will solve is to improve the efficient of measuring in single source, the cost that reduces the measurement of single source.
For achieving the above object the utility model by the following technical solutions: a kind of radioactive source measurement mechanism, comprise: carry source device, collimation mechanism, shield, the source device was positioned at shield in described year, carry and load radioactive source in the device of source, be provided with beam aperture in the described collimation mechanism, this device also comprises gear train, and described gear train is connected with a year source device, and can drive and carry a source device and move, the radioactive source that carries in the device of source is moved in shield and between the inlet of collimation mechanism beam aperture.
The gear train of described year source device is a pinion and rack, and this mechanism comprises: motor, the gear that is connected with motor, the tooth bar that is meshed with gear, the source device was connected with tooth bar in described year.
The gear train of described year source device is a ball screw assembly, mechanism, and this mechanism comprises: motor, the screw that is connected with motor, the leading screw that matches with screw, the source device was connected with leading screw in described year.
Be provided with in the described shield and admit the passage that carries the source device, passage is provided with position-limit mechanism, and this position-limit mechanism is electric near switch, or travel switch.
Be provided with dismountable collimating apparatus in the described collimation mechanism.
Described detent mechanism comprises the support and the platform of load-bearing, and platform is positioned at the support top, and can move along support.
The support of described detent mechanism is provided with nut, and platform connects with support by nut.
The support of described detent mechanism vertically is provided with a plurality of draw-in grooves, and platform links by draw-in groove and support.
In the utility model, carry the source device and be movably radioactive source carrier, and be connected with gear train, when installing and measuring instrument, carry the source device and be positioned at mask bit, the radioactive source that carries in the device of source is in masked state, surrounding environment has obtained security protection, after single source surveying work was ready, gear train promoted to carry the source device automatically and enters the irradiation position, carried the beam aperture inlet in the radioactive source centering collimation mechanism in the device of source, survey instrument is carried out irradiation, after irradiation is finished, carry the source device and be moved into mask bit, finish the irradiation work that single source is measured.In measuring process, by moving the radioactive source that carries in the device of source, realize the conversion of opening pencil attitude and pass pencil attitude of radioactive source, survey instrument does not need to move, do not need to load and unload radioactive source, irradiation work is finished automatically, measures that the place that need take is little, Measuring Time short, it is low to measure cost so finish single source, shorten the non-cutting time that single source is measured, improved the efficient that single source is measured.
Description of drawings
Fig. 1 is an one-piece construction front elevation of the present utility model.
Fig. 2 is an one-piece construction side view of the present utility model.
Fig. 3 is an one-piece construction vertical view in the utility model.
Fig. 4 is the cut-open view that carries source device and collimation mechanism in the utility model.
Fig. 5 is the stereographic map of detent mechanism in the utility model.
Fig. 6 is the cut-open view of detent mechanism in the utility model.
Among the figure, the 1st, shield, the 2nd, supporter, the 3rd, detent mechanism, the 4th, pedestal, the 11st, radioactive source, the 12nd, carry the source device, the 13rd, passage, the 14th, position-limit mechanism, the 15th, collimating apparatus, the 16th, baffle plate, the 17th, gear, the 18th, tooth bar, the 31st, platform, the 32nd, support, the 33rd, nut.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Among first embodiment, as shown in Figure 1 and Figure 2, the utility model is a kind of radioactive source measurement mechanism, the bottom of device is provided with pedestal 4, pedestal 4 is formed by connecting by joist steel, the supporter 2 of steel construction is fixed on the pedestal 4, and shield 1 is fixedly connected on the supporter 2, and detent mechanism 3 is fixedly connected on the pedestal 4.
As Fig. 3, shown in Figure 4, a kind of radioactive source measurement mechanism, comprise: carry source device 12, collimation mechanism, shield 1, gear train, be provided with in the shield 1 and carry source device 12 and passage 13 thereof, carry and load radioactive source 11 in the source device 12, be provided with beam aperture in the collimation mechanism, gear train is gear 17 tooth bars 18 mechanisms, this mechanism comprises: motor, the gear 17 that is connected with motor, the tooth bar 18 that is meshed with gear 17, be connected with a year source device 12 with an end of tooth bar 18, when starter motor, motor passes to tooth bar 18 with power by gear 17, and tooth bar 18 moves along carrying source device 12 passages 13 straight lines, drives year source device 12 simultaneously and moves in its passage 13, the radioactive source 11 that carries in the source device 12 is moved in shield 1 and between the inlet of collimation mechanism beam aperture, promptly restraint the position and go out between the bundle position and move in the pass of radioactive source 11; Passage 13 in the shield 1 is provided with position-limit mechanism 14, and this position-limit mechanism 14 is electric near switch, or travel switch, and position-limit mechanism 14 has retrained the stroke of year source device 12, defines the moving range of carrying source device 12.
Be provided with dismountable collimating apparatus 15 in the collimation mechanism, can change the radiation field size size of radioactive source 11 beams by the collimating apparatus 15 of changing different apertures, enlarge the scope that radioactive source 11 is measured, collimating apparatus 15 is for having the right cylinder of through hole, the lower end of collimation mechanism is provided with a baffle plate 16, opens baffle plate 16, and the collimating apparatus 15 in different apertures can directly be installed from the below of collimation mechanism, close baffle plate 16, collimating apparatus 15 is fixed in the collimation mechanism.
As Fig. 5, shown in Figure 6, detent mechanism 3 comprises three-back-shaped base plate, be fixed on the support bracket 32 of four jiaos of base plates, be connected nut 33 on the support 32, be installed in the platform 31 on the nut 33, insert in the bottom plate hole support 32 lower ends, and be fixed on the base plate by circlip, support 32 upper ends are provided with screw thread, step nut 33 is connected support 32 upper ends, four jiaos of platform 31 are provided with circular hole, the small end of this circular hole and step nut 33 is complementary, by regulating the level height of four nuts 33, implementation platform 31 is connected with the lifting of support 32.
In the utility model, before implementing radioactive source 11 measurements, survey instrument is installed on the platform 31 of detent mechanism 3, carry source device 12 and be positioned at mask bit, be Guan Shuwei, the radioactive source 11 that carries in the source device 12 is in masked state, and surrounding environment has obtained security protection, after single source surveying work is ready, gear train promotes to carry source device 12 automatically by control system and enters the irradiation position, promptly open the bundle position, carry the beam aperture inlet in the radioactive source 11 centering collimation mechanism in the source device 12, survey instrument is carried out irradiation, after irradiation is finished, carry source device 12 and be moved into mask bit, close beam, finish the irradiation work that single source is measured.In measuring process, by moving the radioactive source 11 that carries in the source device 12, realize the conversion of opening pencil attitude and pass pencil attitude of radioactive source 11, survey instrument does not need to move, do not need to load and unload radioactive source 11, irradiation work is finished automatically, measures that the place that need take is little, Measuring Time short, it is low to measure cost so finish single source, shorten the non-cutting time that single source is measured, improved the efficient that single source is measured.
In a second embodiment, the support 32 of detent mechanism 3 vertically is provided with a plurality of draw-in grooves, and platform 31 links by draw-in groove and support 32, and platform 31 is by inserting the draw-in groove of differing heights, and implementation platform 31 is connected with the lifting of support 32.In the present embodiment, other structure of radioactive source measurement mechanism is identical with the structure of describing in first embodiment.
In the 3rd embodiment, the gear train that carries source device 12 is a ball screw assembly, mechanism, and this mechanism comprises: motor, the screw that is connected with motor, the leading screw that matches with screw, an end of leading screw is connected with a year source device 12.In the present embodiment, other structure of radioactive source measurement mechanism is identical with the structure of describing in first embodiment.
Claims (8)
1, a kind of radioactive source measurement mechanism, comprise: carry source device, collimation mechanism, shield, the source device was positioned at shield in described year, carry and load radioactive source in the device of source, be provided with beam aperture in the described collimation mechanism, it is characterized in that, this device also comprises gear train, described gear train with carry a source device and be connected, and can drive and carry a source device and move, the radioactive source that carries in the device of source is moved in shield and between the inlet of collimation mechanism beam aperture.
2, radioactive source measurement mechanism according to claim 1, it is characterized in that, the gear train of described year source device is a pinion and rack, and this mechanism comprises: motor, the gear that is connected with motor, the tooth bar that is meshed with gear, the source device was connected with tooth bar in described year.
3, radioactive source measurement mechanism according to claim 1, it is characterized in that, the gear train of described year source device is a ball screw assembly, mechanism, and this mechanism comprises: motor, the screw that is connected with motor, the leading screw that matches with screw, the source device was connected with leading screw in described year.
4, radioactive source measurement mechanism according to claim 1 is characterized in that, is provided with in the described shield to admit the passage that carries the source device, and passage is provided with position-limit mechanism, and this position-limit mechanism is electric near switch, or travel switch.
5, radioactive source measurement mechanism according to claim 1 is characterized in that, is provided with dismountable collimating apparatus in the described collimation mechanism.
6, radioactive source measurement mechanism according to claim 1 is characterized in that, described detent mechanism comprises the support and the platform of load-bearing, and platform is positioned at the support top, and can move along support.
7, radioactive source measurement mechanism according to claim 6 is characterized in that, the support of described detent mechanism is provided with nut, and platform connects with support by nut.
8, radioactive source measurement mechanism according to claim 6 is characterized in that, the support of described detent mechanism vertically is provided with a plurality of draw-in grooves, and platform links by draw-in groove and support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202358463U CN201331586Y (en) | 2008-12-26 | 2008-12-26 | Radioactive source measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202358463U CN201331586Y (en) | 2008-12-26 | 2008-12-26 | Radioactive source measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331586Y true CN201331586Y (en) | 2009-10-21 |
Family
ID=41224970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202358463U Expired - Lifetime CN201331586Y (en) | 2008-12-26 | 2008-12-26 | Radioactive source measuring device |
Country Status (1)
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| CN (1) | CN201331586Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582895A (en) * | 2012-03-06 | 2012-07-18 | 褚建祥 | Palm fiber bundle feeder for palm fiber mattress feeding machine |
| CN103706046A (en) * | 2013-12-06 | 2014-04-09 | 广州医科大学附属肿瘤医院 | Electronic beam whole-body radiotherapy positioning platform |
| CN104548368A (en) * | 2014-12-16 | 2015-04-29 | 中国人民解放军第三军医大学第一附属医院 | Medical radiation box and radiotherapy machine |
| CN104548370A (en) * | 2014-12-16 | 2015-04-29 | 中国人民解放军第三军医大学第一附属医院 | Safe radioactive box and multi-source concentric radiotherapy machine |
| CN104548369A (en) * | 2014-12-16 | 2015-04-29 | 重庆市九龙坡区中医院 | Servo motor driven safe radiation box |
| CN111839556A (en) * | 2019-04-28 | 2020-10-30 | 核工业西南物理研究院 | Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism |
-
2008
- 2008-12-26 CN CNU2008202358463U patent/CN201331586Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582895A (en) * | 2012-03-06 | 2012-07-18 | 褚建祥 | Palm fiber bundle feeder for palm fiber mattress feeding machine |
| CN103706046A (en) * | 2013-12-06 | 2014-04-09 | 广州医科大学附属肿瘤医院 | Electronic beam whole-body radiotherapy positioning platform |
| CN104548368A (en) * | 2014-12-16 | 2015-04-29 | 中国人民解放军第三军医大学第一附属医院 | Medical radiation box and radiotherapy machine |
| CN104548370A (en) * | 2014-12-16 | 2015-04-29 | 中国人民解放军第三军医大学第一附属医院 | Safe radioactive box and multi-source concentric radiotherapy machine |
| CN104548369A (en) * | 2014-12-16 | 2015-04-29 | 重庆市九龙坡区中医院 | Servo motor driven safe radiation box |
| CN104548368B (en) * | 2014-12-16 | 2017-01-18 | 中国人民解放军第三军医大学第一附属医院 | Medical radiation box and radiotherapy machine |
| CN104548369B (en) * | 2014-12-16 | 2017-02-22 | 重庆市九龙坡区中医院 | Servo motor driven safe radiation box |
| CN104548370B (en) * | 2014-12-16 | 2017-04-26 | 中国人民解放军第三军医大学第一附属医院 | Safe radioactive box and multi-source concentric radiotherapy machine |
| CN111839556A (en) * | 2019-04-28 | 2020-10-30 | 核工业西南物理研究院 | Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |