CN1569275A - Gamma ray radiation device - Google Patents
Gamma ray radiation device Download PDFInfo
- Publication number
- CN1569275A CN1569275A CN 200410018195 CN200410018195A CN1569275A CN 1569275 A CN1569275 A CN 1569275A CN 200410018195 CN200410018195 CN 200410018195 CN 200410018195 A CN200410018195 A CN 200410018195A CN 1569275 A CN1569275 A CN 1569275A
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- China
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- push rod
- case lid
- housed
- collimator
- shift fork
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Abstract
A gamma ray radiation device is disclosed. In the cabinet, an internal shielding block, a side shielding block, a radiation source clamp, an primary alignment part are provided. An outer shielding block with a secondary alignment device and a motor are installed on the cabinet cover. The lead screw of the motor drive transfer mechanism can enable the source switch to parallelly slide along the guiding rail for opening and closing the channels of primary alignment device and secondary alignment device. A safety bump proof unit is installed on the side of the beam outlet of the device, which can automatically close the ray channel and cut off equipment electricity source when being bumped by the patients to ensure the patients safety. The invention is an isolated structure, having small volume and small weight, being convenient for disassembled from the main engine block. The invention adopts a comparative light secondary alignment device to realize automatic changing, while the primary alignment part, outer shielding block and cabinet cover is assembled into a integral body, can be disassembled once to change to radiation source assembly.
Description
Affiliated technical field
The present invention relates to a kind of gamma ray radiator.
Background technology
The radioactive source of existing gamma ray radiator distributes with certain longitude and latitude on sphere, or the certain regional internal coiling on sphere distributes, or along a certain section arranged distribution of circumference, the radiation appliance volume is very big, weight is very heavy, and radiation appliance and shielding harness amount to weight more than 8 tons; Secondary collimator and radiation appliance one, the specification of collimator, quantity can not be appended; Or secondary collimator is helmet shape, the dress quite difficulty that changes jobs.
Summary of the invention
Purpose of the present invention provides independent structures, installs and removes a kind of gamma ray radiator convenient, that precision is easy to guarantee with main frame.
In order to achieve the above object, the technical solution used in the present invention comprises:
1) the casing inner top first quasi-component that radioactive source folder that the band radiation source assemblies is housed in the side shielding slab, side shielding slab of inner shield piece, hollow U-shaped is housed downwards successively, forms by example of primary collimator and source switch; Radioactive source presss from both sides 22 radiation source assemblies that are equipped with in each equally spaced hole by fan-shaped distribution, and the two sides, the left and right sides of casing is equipped with left rotary shaft and right spindle respectively from the coaxial place of center of gravity, and case lid is housed on the casing;
2) the external shield piece is housed on the case lid, left side of face is equipped with motor under the case lid, belt wheel, motor is connected by being with synchronously with belt wheel, belt wheel and connecting gear connect as one, the leading screw of connecting gear and the nut on the source switch are formed screw pair, the source switch bottom surface is installed on the guide rail, left shift fork and the right shift fork that connects with same spring is equipped with in the following front side of case lid, left side shift fork and right shift fork are used left-small-axis respectively, right-small-axis and left push rod, right push rod is rotationally connected, have equidistantly by the secondary collimator of 22 straight troughs of fan-shaped distribution and insert in the external shield piece, the pulling force of spring compresses left push rod and right push rod, the end of left side push rod and right push rod snaps in secondary collimator two end slots, pins secondary collimator;
3) the said first quasi-component of being made up of example of primary collimator and source switch is respectively and has equidistant 22 straight troughs by fan-shaped distribution, and example of primary collimator is connected with parallel-moving type dowel closing structure mutually with source switch.
4) below the case lid before and after both sides crash bar is housed respectively, the two ends of crash bar are connected with an end of bull stick respectively, the other end of bull stick flexibly connects with bearing pin, the other end of bull stick can with switch clutch mutually.
The present invention compares with background technology, and the useful effect that has is:
1. gamma ray radiator of the present invention is an independent structures, is easy to guarantee with main frame mounting or dismounting convenience, precision;
2. to adopt uranium 238 be main shielding material in the present invention, and tungsten 95 is fine structure part material and auxiliary shield material.Cast iron enclosed type housing is used for preventing the low dose radiation of uranium 238 and the side emission of cobalt 60, and as radiation appliance mass-type foundation part, the volume that so just can accomplish radiation appliance is little, in light weight, the weight of whole radiation appliance is about 1.2 tons, be convenient to transportation, assembling like this, non-environmental-pollution, cost saving;
3. x radiation x device of the present invention has elementary, two kinds of collimators of secondary have the parallel-moving type shield door, and shield door and example of primary collimator are integrated, and secondary collimator is a cuboid, and weight is easy to realize automatic replacing less than 20 kilograms;
4. the source switch of background radiation device, example of primary collimator, secondary collimator, external shield piece and connecting gear are that matrix is assembled into one with the case lid, adorn when changing the source, this part is once pulled down can be changed radiation source assemblies;
5. the bundle mouthful next door that goes out of background radiation device is provided with the anticollision lever apparatus, can stop the irradiation exercises automatically when patient collides, and effectively protects human body safety.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is the first quasi-component closure state sketch map that example of primary collimator and source switch are formed;
Fig. 4 is the first quasi-component opening sketch map that example of primary collimator and source switch are formed;
Fig. 5 is a source switch motor scheme of installation;
Fig. 6 is that the K of Fig. 1 is to view.
Among the figure: 1, casing, 2, the side shielding slab, 3, the inner shield piece, 4, the radioactive source folder, 5, radiation source assemblies, 6, example of primary collimator, 7, source switch, 8, secondary collimator, 9, the external shield piece, 10, case lid, 11, crash bar, 12, bull stick, 13, bearing pin, 14, switch, 15, connecting gear, 16, leading screw, 17, nut, 18, belt wheel, 19, be with 20 synchronously, motor, 21, left rotary shaft, 22, right spindle, 23, spring, 24, left side shift fork, 25, right shift fork, 26, left-small-axis, 27, right-small-axis, 28, left side push rod, 29, right push rod, 30, first accurate passage, 31, two accurate passages, 32, guide rail.
The specific embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, a kind of gamma ray radiator comprises:
1) the casing 1 inner top first quasi-component that radioactive source folder 4 that band radiation source assemblies 5 is housed in the side shielding slab 2, side shielding slab 2 of inner shield piece 3, hollow U-shaped is housed downwards successively, forms by example of primary collimator 6 and source switch 7; 22 radiation source assemblies by fan-shaped distribution are housed in radioactive source folder 4 each equally spaced hole, and the two sides, the left and right sides of casing 1 is equipped with left rotary shaft 21 and right spindle 22 respectively from the coaxial place of center of gravity, and case lid 10 is housed on the casing 1;
2) on the case lid 10 external shield piece 9 is housed, 10 times left side of face of case lid are equipped with motor 20, belt wheel 18, motor 20 and belt wheel 18 are by being with 19 to be connected synchronously, belt wheel 18 and connecting gear 15 connect as one, the leading screw 16 of connecting gear 15 and the nut on the source switch 7 17 are formed screw pair, source switch 7 bottom surfaces are installed on the guide rail 32, left shift fork 24 and the right shift fork 25 that connects with same spring 23 is equipped with in the following front side of case lid 10, left side shift fork 24 and right shift fork 25 are used left-small-axis 26 respectively, right-small-axis 27 and left push rod 28, right push rod 29 is rotationally connected, have equidistantly by the secondary collimator 8 of 22 straight troughs of fan-shaped distribution and insert in the external shield pieces 9, the pulling force of spring 23 compresses left push rod 28 and right push rod 29, the end of left side push rod and right push rod snaps in 8 liang of end slots of secondary collimator, pins secondary collimator 8;
3) the said first quasi-component of being made up of example of primary collimator 6 and source switch 7 is respectively and has equidistant 22 straight troughs by fan-shaped distribution, and example of primary collimator 6 is connected with parallel-moving type dowel closing structure mutually with source switch 7.
As Fig. 2, shown in Figure 6, below the case lid 10 before and after both sides crash bar 11 is housed respectively, the two ends of crash bar 11 are connected with an end of bull stick 12 respectively, the other end of bull stick 12 is with bearing pin 13 flexible connections, the other end of bull stick 12 can with switch 14 clutch mutually.
Side shielding slab 2 of the present invention, inner shield piece 3, source switch 7 etc. are nuclear screening material uranium 238, radioactive source folder 4, example of primary collimator 6, secondary collimator 8, external shield piece 9 etc. are high density shielding material tungsten 95, do shielding material with uranium 238, tungsten 95 and can alleviate the weight of radiation appliance greatly, and make the radiation appliance miniaturization; Casing 1 and case lid 10 are cast iron enclosed type shell, make radiation appliance become one independently whole (Fig. 1), two sides, the left and right sides is in left rotary shaft 21, the right spindle 22 at the coaxial place of center of gravity is contained in double formula bearing block on the main frame on the casing, and radiation appliance can carry out 220 degree rotations neatly; Can unload radiation appliance and take double formula bearing block apart, be transported to franchise factory and adorn and change radiation source assemblies.
Example of primary collimator 6 of the present invention is connected with parallel-moving type dowel closing structure mutually with source switch 7.When increasing income, motor 20 by be with 19 synchronously, belt wheel 18 drives leading screws 16 and rotates, the rotation of leading screw 16 drives nut 17 and realizes that example of primary collimator 6 is along the parallel outside slip of guide rail (32), the two accurate passages 31 of opening first accurate passage 30 and secondary collimator 8 form ray passage, and the ray of radiation source assemblies 5 can be implemented irradiation by passage 30 and 31 couples of patients.During the source, pass, motor 20 opposite directions are moved, and leading screw 16 also motion in the other direction drives nut 17 realization example of primary collimator 6 along guide rail 32 parallel slips inwards, closes accurate passage 30 just.Parallel-moving type dowel closing structure between example of primary collimator 6 and the source switch 7 can effectively prevent the unexpected irradiation and the leakage of lonizing radiation.
The anticollision device is equipped with on the bundle mouthful next door that goes out of radiation appliance of the present invention.When patient collides crash bar 11; drive the axe movement of bull stick 12 around bearing pin 13; the other end of bull stick 12 contacts with switch 14, makes switch 14 work reach control appliance and closes just accurate passage 30 and the equipment of cut-out main power automatically, protects human body safety effectively.
Secondary collimator 8 of the present invention is the linear array plate armature, and size is little, in light weight, and therefore dress changes easily.When needing to take out secondary collimator 8, insert with the specific purpose tool driving lever in the breach E of left shift fork 24 and right shift fork 25, make left shift fork 24, right shift fork 25 around left-small-axis 26, right-small-axis 27 outside extension springs 23, thereby upwards pull out left push rod 28, right push rod 29 along the F direction, secondary collimator 8 can propose easily.During the secondary collimator 8 of need packing into, insert with the specific purpose tool driving lever in the breach E of left shift fork 24 and right shift fork 25, make left shift fork 24, right shift fork 25 around left-small-axis 26, right-small-axis 27 outside extension springs 23, thereby upwards pull out left push rod 28, right push rod 29 along the F direction, secondary collimator 8 can be inserted easily, extract the specific purpose tool driving lever then, because the pulling force of spring 23 presses downward to left push rod 28, right push rod 29, fixing secondary collimator.
Claims (2)
1, a kind of gamma ray radiator is characterized in that comprising:
1) casing (1) the inner top first quasi-component that radioactive source folder (4) that band radiation source assemblies (5) is housed in the side shielding slab (2), side shielding slab (2) of inner shield piece (3), hollow U-shaped is housed downwards successively, forms by example of primary collimator (6) and source switch (7); 22 radiation source assemblies by fan-shaped distribution are housed in radioactive source folder (4) each equally spaced hole, and the two sides, the left and right sides of casing (1) is equipped with left rotary shaft (21) and right spindle (22) respectively from the coaxial place of center of gravity, case lid (10) is housed on the casing (1);
2) on the case lid (10) external shield piece (9) is housed, case lid (10) left side of face down is equipped with motor (20), belt wheel (18), motor (20) is connected by being with (19) synchronously with belt wheel (18), belt wheel (18) and connecting gear (15) connect as one, the leading screw (16) of connecting gear (15) and the nut (17) on the source switch (7) are formed screw pair, source switch (7) bottom surface is installed on the guide rail (32), left shift fork (24) and the right shift fork (25) that connects with same spring (23) is equipped with in the following front side of case lid (10), left side shift fork (24) and right shift fork (25) are used left-small-axis (26) respectively, right-small-axis (27) and left push rod (28), right push rod (29) is rotationally connected, have equidistantly by the secondary collimator (8) of 22 straight troughs of fan-shaped distribution and insert in the external shield piece (9), the pulling force of spring (23) compresses left push rod (28) and right push rod (29), the end of left side push rod and right push rod snaps in secondary collimator (8) two end slots, pins secondary collimator (8);
3) the said first quasi-component of being made up of example of primary collimator (6) and source switch (7) is respectively and has equidistant 22 straight troughs by fan-shaped distribution, and example of primary collimator (6) is connected with parallel-moving type dowel closing structure mutually with source switch (7).
2, a kind of gamma ray radiator according to claim 1, it is characterized in that: both sides are equipped with crash bar (11) respectively before and after below the case lid (10), the two ends of crash bar (11) are connected with an end of bull stick (12) respectively, the other end of bull stick (12) flexibly connects with bearing pin (13), the other end of bull stick (12) can with switch (14) clutch mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018195 CN1569275A (en) | 2004-04-29 | 2004-04-29 | Gamma ray radiation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410018195 CN1569275A (en) | 2004-04-29 | 2004-04-29 | Gamma ray radiation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1569275A true CN1569275A (en) | 2005-01-26 |
Family
ID=34479396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410018195 Pending CN1569275A (en) | 2004-04-29 | 2004-04-29 | Gamma ray radiation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1569275A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339819B (en) * | 2007-07-05 | 2012-03-07 | 同方威视技术股份有限公司 | Remote controllable collimator with four parts independently moving |
| CN102485281A (en) * | 2010-12-03 | 2012-06-06 | 深圳市华科核医疗技术有限公司 | Medical irradiation device |
| WO2017080344A1 (en) * | 2015-11-12 | 2017-05-18 | 南京中硼联康医疗科技有限公司 | Neutron capture therapy system |
| CN107485801A (en) * | 2017-10-09 | 2017-12-19 | 深圳市奥沃医学新技发展有限公司 | One kind collimation body and treatment head |
-
2004
- 2004-04-29 CN CN 200410018195 patent/CN1569275A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101339819B (en) * | 2007-07-05 | 2012-03-07 | 同方威视技术股份有限公司 | Remote controllable collimator with four parts independently moving |
| CN102485281A (en) * | 2010-12-03 | 2012-06-06 | 深圳市华科核医疗技术有限公司 | Medical irradiation device |
| WO2017080344A1 (en) * | 2015-11-12 | 2017-05-18 | 南京中硼联康医疗科技有限公司 | Neutron capture therapy system |
| US10898731B2 (en) | 2015-11-12 | 2021-01-26 | Neuboron Medtech Ltd. | Neutron capture therapy system |
| CN107485801A (en) * | 2017-10-09 | 2017-12-19 | 深圳市奥沃医学新技发展有限公司 | One kind collimation body and treatment head |
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