CN101810910A - Medical linear accelerator mechanism - Google Patents
Medical linear accelerator mechanism Download PDFInfo
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- CN101810910A CN101810910A CN 201010151138 CN201010151138A CN101810910A CN 101810910 A CN101810910 A CN 101810910A CN 201010151138 CN201010151138 CN 201010151138 CN 201010151138 A CN201010151138 A CN 201010151138A CN 101810910 A CN101810910 A CN 101810910A
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Abstract
The invention relates to a medical linear accelerator mechanism, which belongs to the field of electromechanical integration. The medical linear accelerator mechanism comprises the components of a drum supporting seat, a drum, a supporting arm and a treatment head, wherein the drum is fixed on the drum supporting seat; the supporting arm passes through the upper part of the drum in a tilting mode; the rear end of the supporting arm is fixed on the rear end face of the drum and is provided with a balance weight; and the treatment head is fixed at the front end of the supporting arm. The medical linear accelerator mechanism is reasonable in structural layout to ensure that electromagnetic interferences and noises among various electronic components made in China can be effectively reduced even partially eliminated on the basis of saving accelerator spatial structures as much as possible so as to lay a foundation for reducing the cost of a medical linear accelerator.
Description
Affiliated technical field:
The present invention relates to a kind of linear accelerator, particularly a kind of medical linear accelerator mechanism belongs to the electromechanical integration field.
Background technology:
At present, used clinac, can be divided into surfboard linac and standing wave linac according to the used accelerating tube type of accelerator, the energy of exporting electronics according to accelerator can be divided into mental retardation, middle energy and high-energy linac, mental retardation is generally below 6MEV, in can be generally between 6-15MEV, high energy refers generally to more than the 15MEV, in addition, can also can be divided into single photon, two-photon and multi-photon according to the energy shelves number of stages of photon.
Now, there is BJ Medical Equipment Research Institute in the main domestic production producer of mental retardation single photon clinac, Shandong factory of Xinhua etc., their product is a single photon, to oncotherapy but be limited in scope, do not have the electronics line, the worlds such as Siemens, Varian and Yi Keda are specialized in the company that produces clinac and are then produced a series of products from mental retardation to high energy, but cost an arm and a leg, hospital can't bear in more multinational, is monopolized by these major companies at middle high energy two-photon linear accelerator especially.
Existing the present invention has designed high energy two-photon linear accelerator in a kind of capable ripple, both improved the market competitiveness of home products, broken the monopoly position of offshore company, on price, effectively reduced just cost again, the suitable market competitiveness has been arranged identical similar product.
Structural design scheme of the present invention is not seen relevant report and open source literature at home and abroad.
Summary of the invention:
The present invention relates to a kind of medical linear accelerator mechanism, it is carrying out rational deployment in structure, it can be guaranteed on the basis of saving the accelerator space structure as far as possible, to can effectively reduce between the made in China various electronic devices and components, even local electromagnetic interference and the noise eliminated, for reducing, the cost of clinac lays the first stone.
The technical program comprises: drum bearing, drum, support arm, Wave guide system and treatment head; Be fixed with drum on the drum bearing, support arm rouses top athwart, and the rear end of support arm is fixed on the bulging rear end face, and is furnished with balance weight assembly, and the front end of support arm is fixed with the treatment head; Wherein rousing bearing comprises: drive motors, and the data potentiometer, the drum driving box, four support wheels are made up of a drivewheel and three driven pulleys in four support wheels; Bulge is drawn together: the complete machine low-tension supply, ADC/ accelerating tube control chamber, phase shifter drives mechanism, a treatment control chamber, phase shifter, ionization chamber/export orientation power supply, the thyratron drive plate, the manipulator distribution board, divide pressing plate, negative mismatch current table, damping resistance, negative mismatch resistance, thyratron, artificial line, negative circuit mismatching plate, cowling panel, the IGBT driving box, the modulator control case, high tension cable, the transformator of energizing, the magnetron magnet power supply, the magnetron heater power supply, support B, balance weight assembly, magnetron assembly, magnetron protection hurdle, four-pole circulator, the dry type load, waveguide, the 3A frame, the AFC driving mechanism, the magnetic bias power supply box, the AFC control chamber, the AIC sampling cabinet, the electron gun filament power supply, the AIC panel, the AIC control chamber, the passivation circuit board, the main pulse transformator, main pulse transformer low voltage input, main pulse transformer high-voltage input, main pulse transformer high-voltage outfan, high pressure resistant sleeve pipe, cable, water load A, angle valve, AFC detection mouth B, water load B, distribution box, auxiliary connection is protected case, main inclined to one side power supply, focusing power supply A, focusing power supply C, focusing power supply B, focusing power supply D, auxilliary inclined to one side power supply; Support arm comprises: the titanium pump support, and titanium pump supports A, winding mechanism, vacuum insulating window, AFC detection mouth A, ADC sampling box, shield assembly, vacuum box, main bias magnet, accelerating tube, export orientation coil, the range finding lamp, treatment skull, treatment head, electron gun, hydroecium, the vacuum threeway, treatment head wherein mentioned above comprises elementary collimation awl, last diaphragm assembly, following diaphragm assembly, scale assembly, adnexa pedestal, calimator assembly; Wave guide system comprises: four-pole circulator, dry type load, waveguide, water load A, angle valve, AFC detection mouth B, AFC detection mouth A, water load B has phase shifter of phase shifter drives mechanism, magnetron assembly, power synthesizes bridge, vacuum threeway, vacuum insulating window A, vacuum insulating window B;
The Wave guide system annexation is: at first be that magnetron assembly is connected with the port A of four-pole circulator, the port B of four-pole circulator is connected with waveguide, the port C of four-pole circulator links to each other with water load B, the port D of four-pole circulator links to each other with the dry type load, waveguide links to each other with the A end of the synthetic bridge of power again, the B end of the synthetic bridge of power links to each other with the vacuum threeway by vacuum insulating window B, the vacuum threeway links to each other with titanium pump with angle valve respectively simultaneously, the C end of the synthetic bridge of power connects water load A, the D end of the synthetic bridge of power linked to each other with the phase shifter that has phase shifter drives mechanism, and the other end that has the phase shifter of phase shifter drives mechanism links to each other with vacuum insulating window A by waveguide; AFC detection mouth B links to each other with waveguide with AFC detection mouth A simultaneously;
The inside annexation of drum mounting assembly is: drive motors is fixed on a side of rest base, four support wheels symmetrically and evenly be fixed on bearing, drivewheel engagement in drive motors and the support wheel, the drum driving box hangs on the bearing of laying that side of drive motors, one end of data potentiometer is fixed on the bearing, the other end and drum engagement;
The inner annexation of drum is: drum is whole to be the steel material, the side is a hollow structure, one side on drum two sides is spent down horizontal by 20 from front to back, and dedolation has two through holes, be used to install support arm, wherein there are horizontal 3, vertical 2 dividing plates are divided into 11 independently spaces with the hollow structure of drum, are respectively crosspiece A, crosspiece B, with crosspiece C, and vertical shelves A and B, well-known, horizontal 3, vertical 2 dividing plates should be able to be separated out 12 separate space, in practical operation, the diaphragm plate between longitudinal baffle is removed, so form 11 independently spaces; In crosspiece A lower surface the complete machine low-tension supply is installed, ADC/ accelerating tube control chamber is equipped with in the upper surface of crosspiece A; The phase shifter drives mechanism of Wave guide system links to each other with the phase shifter and is fixed on simultaneously on the vertical shelves A between crosspiece A and the crosspiece B; Be fixed with a treatment control chamber on the crosspiece B upper surface; And be fixed on the vertical shelves A between crosspiece B and the crosspiece C, ionization chamber/export orientation power supply is fixed on the crosspiece C, the thyratron drive plate is fixed on the lower surface of crosspiece A, the manipulator distribution board is fixed on the inboard of rousing face before the drum of crosspiece A lower end, the middle part, upper surface of crosspiece A is fixed with artificial line, between the back bulging face inboard of artificial line and drum, be fixed with thyratron and negative circuit mismatching plate on the upper surface of crosspiece A, wherein on negative circuit mismatching plate, the branch pressing plate is installed, negative mismatch current table, damping resistance, negative mismatch resistance, one end of cowling panel and high tension cable, the other end of high tension cable is installed on the transformator of energizing, the IGBT driving box is fixed near on the upper surface of preceding bulging face crosspiece B, the transformator of energizing is fixed near the back and rouses on the upper surface of face crosspiece B, the modulator control case is fixed on the lower surface of crosspiece C, and magnetron magnet power supply and magnetron heater power supply are fixed on the upper surface of crosspiece C.
The back left side of drum is fixed with distribution box, and the rear end of distribution box is fixed with auxiliary connection and protects case, main inclined to one side power supply, focusing power supply A, focusing power supply C, focusing power supply B, focusing power supply D and auxilliary inclined to one side power supply;
The upper end, back the right of drum is fixed with the 3A frame, is fixed with the AIC control chamber on the 3A frame, the AFC driving mechanism, and the magnetic bias power supply box, the AFC control chamber, the AIC sampling cabinet wherein, has electron gun filament power supply and AIC panel in the AIC control chamber; The lower end, back the right of drum is fixed with the magnetron assembly of Wave guide system, magnetron protection hurdle is socketed on the magnetron assembly of Wave guide system, an end of middle-end and balance weight assembly is connected under back the right of drum, the other end of balance weight assembly is fixed with and supports B, and the other end that supports B is fixed on the winding mechanism of support arm; Referring to accompanying drawing 3, be fixed with the main pulse transformator on the balance weight assembly, main pulse transformer low voltage input, main pulse transformer high-voltage input and main pulse transformer high-voltage outfan are housed on the main pulse transformator, one end of high pressure resistant cable is fixed on the main pulse transformator, the other end is received on the electron gun of support arm, and the passivation circuit board is fixed on magnetron protection hurdle;
Support arm comprises: the titanium pump of titanium pump support and Wave guide system is connected, an end that supports A is fixed on the support arm shell, the other end that supports A is fixed on the winding mechanism, the ADC sampling box is fixed on the upper left side of support arm inside, the treatment head is fixed on the preceding lower surface of support arm, the treatment skull covers the outside of treatment head, accelerating tube is fixed in the through hole of support arm inside, the rear end links to each other with electron gun, simultaneously having interface at the front and back sides of accelerating tube links to each other with Wave guide system, accelerating tube is at the front end of the inside of support arm, after leading flank and the interface that Wave guide system links to each other, the export orientation coil is installed successively, vacuum box; Main bias magnet is fixed on the support arm inboard around vacuum box, and the range finding lamp is fixed on the support arm outside, and the centrage of the line of its axis and treatment head, the centrage of drum will cross and be a bit, and the centrage of the line of its axis and treatment head is 45 simultaneously; A treatment inside is equipped with elementary collimation from top to bottom successively and bores, goes up diaphragm assembly, following diaphragm assembly, adnexa pedestal and calimator assembly; Wherein, be socketed with the scale assembly outside the last diaphragm assembly; Hydroecium is installed in the outer bottom of support arm rear end, and in addition, shield assembly is arranged around the vacuum box in treatment head and the support arm according to practical situation, to reach the purpose that the protection ionizing radiation is revealed.
Modification 1: the winding mechanism in the support arm plays the effect of folding and unfolding lead in the drum rotation, in the technical program, can also there be the mode of other folding and unfolding lead that it is substituted, as coil the line bucket, or line directly is fixed on the center of rotation of bulging rear end, pulley jacks etc. are as long as realize can using on the technical program of when drum rotates folding and unfolding lead function.
Modification 2: aerial ionization chamber/export orientation power supply in drum, a treatment control chamber, ADC/ accelerating tube control chamber, the complete machine low-tension supply, distribution box, auxiliary connection is protected box, main inclined to one side power supply, auxilliary inclined to one side power supply, focusing power supply A, focusing power supply B, focusing power supply C, focusing power supply D, magnetron magnet power supply, the magnetron heater power supply, the installation site and the mode of 3A frame and top mounted component thereof etc. can be modified or change.
Modification 3: the microwave system in the technical solution of the present invention is row ripple feedback scheme, remove parts such as the synthetic bridge of power, phase shifter in this microwave system, in the microwave system of accelerating tube outlet, increase a water load and also can become the straight feedback system of microwave, so also can realize the function of accelerator.
Beneficial effect:
Advantage one: be fixed with the main pulse transformator on the balance weight assembly, the main pulse transformator can play certain counterweight effect;
Advantage two: manipulator generally is placed on outside the drum, with the rotation of drum be isolating, but home-made HIGH-POWERED MICROWAVES rotary joint quality do not pass a test, and needs a kind of structure of design that manipulator is placed in the drum, follows drum rotation together;
Advantage three: the structural design of this drum, the cable of walking in the periphery is fewer, has significantly reduced the quantity of turnover cable, and fault rate descends, and maintenance cost reduces;
Advantage four: the present invention is carrying out rational deployment in structure, it can be guaranteed on the basis of saving the accelerator space structure as far as possible, to can effectively reduce between the made in China various electronic devices and components, even local electromagnetic interference and the noise eliminated, for reducing, the cost of clinac lays the first stone.
Description of drawings:
Accompanying drawing 1: sketch map is looked on a kind of medical linear accelerator mechanism left side that the present invention relates to;
Accompanying drawing 2: sketch map is looked on a kind of medical linear accelerator mechanism right side that the present invention relates to;
Accompanying drawing 3: a kind of medical linear accelerator mechanism schematic rear view that the present invention relates to;
53-drum bearing, the 78-drum, the 9-support arm, 13-treats head, the 52-drive motors, 74-data potentiometer, 54-drum driving box, the 95-support wheel, the 78-drum, 19-complete machine low-tension supply, 18-ADC/ accelerating tube control chamber, 17-phase shifter drives mechanism, 16-treats a control chamber, the 4-phase shifter, 5-ionization chamber/export orientation power supply, 55-thyratron drive plate, 56-manipulator distribution board, 57-divides pressing plate, 58-bears the mismatch current table, the 59-damping resistance, 60-bears mismatch resistance, the 51-thyratron, the 50-artificial line, 61-bears the circuit mismatching plate, the 62-cowling panel, the 63-IGBT driving box, 29-modulator control case, the 33-high tension cable, the 32-transformator of energizing, 31-magnetron magnet power supply, 30-magnetron heater power supply, 47-supports B, the 48-balance weight assembly, the 49-magnetron assembly, 46-magnetron protection hurdle, the 35-four-pole circulator, the load of 86-dry type, the 34-waveguide, the 39-3A frame, the 36-AFC driving mechanism, 37-magnetic bias power supply box, the 38-AFC control chamber, the 40-AIC sampling cabinet, 45-electron gun filament power supply, the 44-AIC panel, the 43-AIC control chamber, 75-passivation circuit board, 72-main pulse transformator, 71-main pulse transformer low voltage input, 70-main pulse transformer high-voltage input, 69-main pulse transformer high-voltage outfan, the high pressure resistant sleeve pipe of 68-, the 73-cable, 67-water load A, the 66-angle valve, 64-AFC detection mouth B, 77-water load B, the 27-distribution box, the auxiliary connection of 26-is protected case, the inclined to one side power supply of 25-master, 24-focusing power supply A, 23-focusing power supply C, 21-focusing power supply B, 20-focusing power supply D, 22-assists inclined to one side power supply; Support arm 9 comprises: 1-titanium pump support, the 2-titanium pump, 41-supports A, the 42-winding mechanism, the 8-vacuum insulating window, 6-AFC detection mouth A, the 10-ADC sampling box, the 11-shield assembly, 7-vacuum box, 28-master's bias magnet, the 89-accelerating tube, 88-export orientation coil, the 15-lamp of finding range, 12-treats skull, 13-treats head, the 65-electron gun, 76-hydroecium, the threeway of 83-vacuum, the elementary collimation awl of 90-, the last diaphragm assembly of 91-, diaphragm assembly under the 92-, 93-scale assembly, 94-adnexa pedestal, 14-calimator assembly, the 35-four-pole circulator, the load of 86-dry type, the 34-waveguide, 67-water load A, the 66-angle valve, 64-AFC detection mouth B, 6-AFC detection mouth A, 77-water load B, 17-phase shifter drives mechanism, the 4-phase shifter, the 49-magnetron assembly, 3-power synthesizes bridge, the threeway of 83-vacuum, 8-vacuum insulating window A, 68-vacuum insulating window B;
The specific embodiment:
With reference to the accompanying drawings, below in conjunction with embodiment the technical program is further explained.
The present invention includes: drum bearing 53, drum 78, support arm 9 and treatment 13; Drum is fixed with drum 78 on the bearing 53, and support arm 9 is drum 78 tops athwart, and the rear end of support arm 9 is fixed on the rear end face of drum 78, and is furnished with balance weight assembly 48, and the front end of support arm 9 is fixed with treatment 13; Wherein rousing bearing comprises: drive motors 52, data potentiometer 74,54, four support wheels 95 of drum driving box; Form by a drivewheel and three driven pulleys in four support wheels 95; Drum 78 comprises: complete machine low-tension supply 19, ADC/ accelerating tube control chamber 18; Phase shifter drives mechanism 17; A treatment control chamber 16; Phase shifter 4; Ionization chamber/export orientation power supply 5, thyratron drive plate 55, manipulator distribution board 56, divide pressing plate 57, negative mismatch current table 58, damping resistance 59, negative mismatch resistance 60, thyratron 51, artificial line 50, negative circuit mismatching plate 61, cowling panel 62, IGBT driving box 63, modulator control case 29, high tension cable 33, the transformator 32 of energizing, magnetron magnet power supply 31, magnetron heater power supply 30 supports B 47, balance weight assembly 48, magnetron assembly 49, magnetron protection hurdle 46, four-pole circulator 35, dry type load 86, waveguide 34,3A frame 39, AFC driving mechanism 36, magnetic bias power supply box 37, AFC control chamber 38, AIC sampling cabinet 40, electron gun filament power supply 45, AIC panel 44, AIC control chamber 43, passivation circuit board 75, main pulse transformator 72, main pulse transformer low voltage input 71, main pulse transformer high-voltage input 70, main pulse transformer high-voltage outfan 69, high pressure resistant sleeve pipe 68, cable 73, water load A67, angle valve 66, AFC detection mouth B 64, water load B 77, distribution box 27, and auxiliary connection is protected case 26, main inclined to one side power supply 25, focusing power supply A 24, focusing power supply C 23, focusing power supply B 21, focusing power supply D 20, auxilliary inclined to one side power supply 22; Support arm 9 comprises: titanium pump support 1, and titanium pump 2 supports A 41, winding mechanism 42, vacuum insulating window 8, AFC detection mouth A 6, ADC sampling box 10, shield assembly 11, vacuum box 7, main bias magnet 28, accelerating tube 89, export orientation coil 88, range finding lamp 15, treatment skull 12, treatment 13, electron gun 65, hydroecium 76, vacuum threeway 83, treatment wherein mentioned above 13 comprise elementary collimation awl 90, last diaphragm assembly 91, following diaphragm assembly 92, scale assembly 93, adnexa pedestal 94, calimator assembly 14; Wave guide system comprises: four-pole circulator 35, dry type load 86, waveguide 34, water load A 67, angle valve 66, AFC detection mouth B 64, AFC detection mouth A 6, water load B 77, have the phase shifter 4 of phase shifter drives mechanism 17, magnetron assembly 49, power synthesizes bridge 3, vacuum threeway 83, vacuum insulating window A 8, vacuum insulating window B68
The Wave guide system annexation is: at first be that magnetron assembly 49 is connected with the port A of four-pole circulator 35, the port B of four-pole circulator 35 is connected with waveguide 34, the port C of four-pole circulator 35 links to each other with water load B77, the port D of four-pole circulator 35 links to each other with dry type load 86, waveguide 34 links to each other with the A end of the synthetic bridge 3 of power again, the B end of the synthetic bridge 3 of power links to each other with vacuum threeway 83 by vacuum insulating window B68, vacuum threeway 83 links to each other with titanium pump 2 with angle valve 66 respectively simultaneously, the C end of the synthetic bridge 3 of power connects water load A67, the D end of the synthetic bridge 3 of power linked to each other with the phase shifter 4 that has phase shifter drives mechanism 17, and the other end that has the phase shifter 4 of phase shifter drives mechanism 17 links to each other with vacuum insulating window A8 by waveguide 34; AFC detection mouth B64 links to each other with waveguide 34 with AFC detection mouth A6 simultaneously;
The inside annexation of drum mounting assembly 53 is: drive motors 52 is fixed on a side of bearing 96 bottoms, four support wheels 95 symmetrically and evenly be fixed on bearing 96, drivewheel engagement in drive motors 52 and the support wheel 95, drum driving box 54 hangs on the bearing 96 of laying drive motors 52 those sides, one end of data potentiometer 74 is fixed on the bearing 96, the other end and drum 78 engagements;
The annexation of drum 78 inside is: drum 78 integral body are the steel material, the side is a hollow structure, one side on drum 78 two sides is spent down horizontal by 20 from front to back, and dedolation has two through holes, be used to install support arm 9, wherein there are horizontal 3, vertical 2 dividing plates are divided into 11 independently spaces with the hollow structure of drum 78, be respectively crosspiece A80, crosspiece B81 and crosspiece C82, and vertical shelves A and B, as everyone knows, horizontal 3, vertical 2 dividing plates should be able to be separated out 12 separate space, in practical operation, diaphragm plate between longitudinal baffle is removed, so form 11 independently spaces; Referring to accompanying drawing 1 left view, from bottom to top, complete machine low-tension supply 19 is installed in crosspiece A80 lower surface, ADC/ accelerating tube control chamber 18 is equipped with in the upper surface of crosspiece A80; The phase shifter drives mechanism 17 of Wave guide system links to each other with the phase shifter 4 and is fixed on simultaneously on the vertical shelves A between crosspiece A80 and the crosspiece B81; Be fixed with a treatment control chamber 16 on the crosspiece B81 upper surface; And be fixed on the vertical shelves A between crosspiece B81 and the crosspiece C82, ionization chamber/export orientation power supply 5 is fixed on the crosspiece C82, referring to accompanying drawing 2 right views, from bottom to top, thyratron drive plate 55 is fixed on the lower surface of crosspiece A80, manipulator distribution board 56 is fixed on the inboard of rousing face before the drum 78 of crosspiece A80 lower end, the middle part, upper surface of crosspiece A80 is fixed with artificial line 50, between the back bulging face inboard of artificial line 50 and drum 78, be fixed with thyratron 51 and negative circuit mismatching plate 61 on the upper surface of crosspiece A80, wherein on negative circuit mismatching plate 61, branch pressing plate 57 is installed, negative mismatch current table 58, damping resistance 59, negative mismatch resistance 60, one end of cowling panel 62 and high tension cable 33, the other end of high tension cable is installed on the transformator 32 of energizing, the IGBT driving box is fixed near on the upper surface of preceding bulging face crosspiece B81, the transformator 32 of energizing is fixed near the back and rouses on the upper surface of face crosspiece B81, modulator control case 29 is fixed on the lower surface of crosspiece C82, and magnetron magnet power supply 31 and magnetron heater power supply 30 are fixed on the upper surface of crosspiece C82.
Referring to accompanying drawing 1, the back left side of drum 78 is fixed with distribution box 27, and the rear end of distribution box 27 is fixed with auxiliary connection and protects case 26, main inclined to one side power supply 25, focusing power supply A24, focusing power supply C23, focusing power supply B21, focusing power supply D20 and auxilliary inclined to one side power supply 22;
Referring to accompanying drawing 2, the upper end, back the right of drum 78 is fixed with 3A frame 39, is fixed with AIC control chamber 43 on the 3A frame 39, AFC driving mechanism 36, magnetic bias power supply box 37, AFC control chamber 38, AIC sampling cabinet 40 wherein, has electron gun filament power supply 45 and AIC panel 44 in the AIC control chamber 43; The lower end, back the right of drum 78 is fixed with the magnetron assembly 49 of Wave guide system, and magnetron protection hurdle 46 is socketed in the magnetron assembly 49 of Wave guide system; Magnetron assembly 9, an end of middle-end and balance weight assembly 48 is connected under back the right of drum 78, and the other end of balance weight assembly 48 is fixed with and supports B47, and the other end that supports B47 is fixed on the winding mechanism 42 of support arm 9; Referring to accompanying drawing 3, be fixed with main pulse transformator 72 on the balance weight assembly 48, main pulse transformer low voltage input 71 is housed on the main pulse transformator 72, main pulse transformer high-voltage input 70, main pulse transformer high-voltage outfan 69, one end of high pressure resistant cable 73 is fixed on the main pulse transformator 72, and the other end is received on the electron gun 65 of support arm 9, and passivation circuit board 75 is fixed on magnetron protection hurdle 46;
Referring to accompanying drawing 1, support arm 9 comprises: titanium pump support 1 is connected with the titanium pump 2 of Wave guide system, an end that supports A41 is fixed on the support arm shell, the other end that supports A41 is fixed on the winding mechanism 42, ADC sampling box 10 is fixed on the upper left side of support arm 9 inside, treatment 13 is fixed on the preceding lower surface of support arm 9, treatment skull 12 covers the outside of treatment 13, referring to accompanying drawing 2, accelerating tube 89 is fixed in the through hole of inside of support arm 9, the rear end links to each other with electron gun 65, simultaneously having interface at the front and back sides of accelerating tube 89 links to each other with Wave guide system, accelerating tube 89 is at the front end of the inside of support arm 9, after leading flank and the interface that Wave guide system links to each other, export orientation coil 88 is installed successively, vacuum box 7; Main bias magnet 28, be fixed on support arm 9 inboards around vacuum box 7, range finding lamp 15 is fixed on support arm 9 outsides, the centrage of the line of its axis and treatment 13, the centrage of drum 78 will cross and be a bit, and the centrage of the line of its axis and treatment simultaneously 13 is 45; Treatment 13 inside are equipped with elementary collimation awl 90, last diaphragm assembly 91, following diaphragm assembly 92, adnexa pedestal 94 and calimator assembly 14 from top to bottom successively; Wherein, last diaphragm assembly 91 outsides are socketed with scale assembly 93; Referring to accompanying drawing 3, hydroecium 76 is installed in the outer bottom of support arm 9 rear ends, and in addition, shield assembly 11 is arranged around the vacuum box 7 in treatment 13 and the support arm 9 according to practical situation, to reach the purpose that the protection ionizing radiation is revealed.
Its running is: complete machine powers up and begins the preheated one-section time (being generally 10 minutes), each power supply normally starts during this time, preheating finishes, there is not fault, the instruction that adds high pressure is sent in the outside, 63 work of modulator control case 29 control IGBT driving box are sent charging pulse and are given transformator 32 chargings of energizing, energize transformator 32 energy storage to artificial line 50, arrive the thresholding of regulation when energy storage after, modulator control case 29 sends signal for thyratron drive plate 55,51 conductings of control thyratron, at this moment deliver on the main pulse transformator 72 at the electric energy on the artificial line 50, deliver to electron gun 65 and passivation circuit board 75 respectively after boosting by main pulse transformator 72, that road electric energy of delivering to electron gun 65 makes electron gun 65 emission electron enter accelerating tube 89, wherein, the quantity of emission electron is by 42 controls of AIC control chamber.Deliver to this road of passivation circuit board 75 and after transpassivation, give magnetron 49, transforming electric energy by magnetron 49 is microwave energy, make magnetron 49 produce the microwave of certain frequency and power, after this microwave frequency is controlled by AFC driving mechanism 36, this microwave enters accelerating tube 89 by Wave guide system and is quickened by electron gun 65 electrons emitted bundles, electronics constantly quickens back outlet from accelerating tube 89 through microwave energy and enter into vacuum box 7 after export orientation coil 88 guiding in accelerating tube 89, high energy electron is become vertically downward direction and is entered treatment 13 after main bias magnet 28 deflections in vacuum box 7, about the concrete electronic switch mode of treatment 13 by 16 controls of a treatment control chamber, electronics is changed (according to actual needs through elementary collimation awl 90 in the treatment head, might convert X ray or electronics line to) and expansion, when converting X ray to, ray is got to patient's treatment position after by last diaphragm assembly 91 and following diaphragm assembly 92 limit bundles, when converting the electronics line to except that by on also to limit to restraint diaphragm assembly 91 and the following diaphragm assembly 92 limit bundles and squeeze into the patient treatment position and treat by calimator 14; The ray that enters the patient treatment position gives ADC/ accelerating tube control chamber 18 control picked-up total amounts after via 10 samplings of ADC sampling box, thereby finishes whole therapeutic process.
The present invention includes but be not limited to above embodiment, every under the spirit and principles in the present invention, any local improvement of carrying out or be equal to replacement all will be considered as within protection scope of the present invention.
Claims (7)
1. medical linear accelerator mechanism, it is characterized in that: mechanism components comprises: drum bearing (53), drum (78), support arm (9) and treatment head (13); Be fixed with drum (78) on the drum bearing (53), support arm (9) rouses (78) top athwart, and the rear end of support arm (9) is fixed on the rear end face of drum (78), and is furnished with balance weight assembly (48), and the front end of support arm (9) is fixed with treatment head (13); Wherein rousing bearing comprises: drive motors (52), data potentiometer (74), drum driving box (54), four support wheels (95); Form by a drivewheel and three driven pulleys in four support wheels (95); Drum (78) comprising: complete machine low-tension supply (19), ADC/ accelerating tube control chamber (18); Phase shifter drives mechanism (17); A treatment control chamber (16); Phase shifter (4); Ionization chamber/export orientation power supply (5), thyratron drive plate (55), manipulator distribution board (56) divides pressing plate (57), negative mismatch current table (58), damping resistance (59), negative mismatch resistance (60), thyratron (51), artificial line (50), negative circuit mismatching plate (61), cowling panel (62), IGBT driving box (63), modulator control case (29), high tension cable (33), the transformator (32) of energizing, magnetron magnet power supply (31), magnetron heater power supply (30), support B (47), balance weight assembly (48), magnetron assembly (49), magnetron protection hurdle (46), four-pole circulator (35), dry type load (86), waveguide (34), 3A frame (39), AFC driving mechanism (36), magnetic bias power supply box (37), AFC control chamber (38), AIC sampling cabinet (40), electron gun filament power supply (45), AIC panel (44), AIC control chamber (43), passivation circuit board (75), main pulse transformator (72), main pulse transformer low voltage input (71), main pulse transformer high-voltage input (70), main pulse transformer high-voltage outfan (69), high pressure resistant sleeve pipe (68), cable (73), water load A (67), angle valve (66), AFC detection mouth B (64), water load B (77), distribution box (27), auxiliary connection is protected case (26), main inclined to one side power supply (25), focusing power supply A (24), focusing power supply C (23), focusing power supply B (21), focusing power supply D (20), auxilliary inclined to one side power supply (22); Support arm (9) comprising: titanium pump support (1), and titanium pump (2) supports A (41), winding mechanism (42), vacuum insulating window (8), AFC detection mouth A (6), ADC sampling box (10), shield assembly (11), vacuum box (7), main bias magnet (28), accelerating tube (89), export orientation coil (88), range finding lamp (15), treatment skull (12), treatment head (13), electron gun (65), hydroecium (76), vacuum threeway (83), treatment head wherein mentioned above (13) comprises elementary collimation awl (90), last diaphragm assembly (91), following diaphragm assembly (92), scale assembly (93), adnexa pedestal (94), calimator assembly (14); Wave guide system comprises: four-pole circulator (35), dry type load (86), waveguide (34), water load A (67), angle valve (66), AFC detection mouth B (64), AFC detection mouth A (6), water load B (77) has phase shifter (4) of phase shifter drives mechanism (17), magnetron assembly (49), power synthesizes bridge (3), vacuum threeway (83), vacuum insulating window A (8), vacuum insulating window B (68);
The Wave guide system annexation is: magnetron assembly (49) is connected with the port A of four-pole circulator (35), the port B of four-pole circulator (35) is connected with waveguide (34), the port C of four-pole circulator (35) links to each other with water load B (77), the port D of four-pole circulator (35) links to each other with dry type load (86), waveguide (34) links to each other with the A end of the synthetic bridge (3) of power again, the B end that power synthesizes bridge (3) links to each other with vacuum threeway (83) by vacuum insulating window B (68), vacuum threeway (83) links to each other with titanium pump (2) with angle valve (66) respectively simultaneously, the C end that power synthesizes bridge (3) connects water load A (67), the D end that power synthesizes bridge (3) linked to each other with the phase shifter that has phase shifter drives mechanism (17) (4), and the other end that has the phase shifter (4) of phase shifter drives mechanism (17) links to each other with vacuum insulating window A (8) by waveguide (34); AFC detection mouth B (64) links to each other with waveguide (34) with AFC detection mouth A (6) simultaneously;
The inside annexation of drum mounting assembly (53) is: drive motors (52) is fixed on a side of bearing (96) bottom, four support wheels (95) symmetrically and evenly be fixed on bearing (96), drivewheel engagement in drive motors (52) and the support wheel (95), drum driving box (54) hangs on the bearing (96) of laying that side of drive motors (52), one end of data potentiometer (74) is fixed on the bearing (96), the other end and drum (78) engagement;
The inner annexation of drum (78) is: drum (78) is whole to be the steel material, the side is a hollow structure, one side on drum (78) two sides is spent down horizontal by 20 from front to back, and dedolation has two through holes, be used to install support arm (9), wherein there are horizontal 3, the hollow structure that vertical 2 dividing plates will rouse (78) is divided into 11 independently spaces, be respectively crosspiece A (80), crosspiece B (81), with crosspiece C (82), and vertical shelves A and B, in crosspiece A (80) lower surface complete machine low-tension supply (19) being installed, ADC/ accelerating tube control chamber (18) is equipped with in the upper surface of crosspiece A (80); The phase shifter drives mechanism (17) of Wave guide system links to each other with the phase shifter (4) and is fixed on simultaneously on the vertical shelves A between crosspiece A (80) and the crosspiece B (81); Be fixed with a treatment control chamber (16) on crosspiece B (81) upper surface; And be fixed on the vertical shelves A between crosspiece B (81) and the crosspiece C (82), ionization chamber/export orientation power supply (5) is fixed on the crosspiece C (82), thyratron drive plate (55) is fixed on the lower surface of crosspiece A (80), manipulator distribution board (56) is fixed on the inboard of the preceding bulging face of drum (78) of crosspiece A (80) lower end, the middle part, upper surface of crosspiece A (80) is fixed with artificial line (50), between the back bulging face inboard of artificial line (50) and drum (78), be fixed with thyratron (51) and negative circuit mismatching plate (61) on the upper surface of crosspiece A (80), branch pressing plate (57) wherein is installed on negative circuit mismatching plate (61), negative mismatch current table (58), damping resistance (59), negative mismatch resistance (60), one end of cowling panel (62) and high tension cable (33), the other end of high tension cable is installed on the transformator of energizing (32), IGBT driving box (63) is fixed near on the upper surface of preceding bulging face crosspiece B (81), the transformator (32) of energizing is fixed near the back and rouses on the upper surface of face crosspiece B (81), modulator control case (29) is fixed on the lower surface of crosspiece C (82), and magnetron magnet power supply (31) and magnetron heater power supply (30) are fixed on the upper surface of crosspiece C (82).
The back left side of drum (78) is fixed with distribution box (27), and the rear end of distribution box (27) is fixed with auxiliary connection and protects case (26), main inclined to one side power supply (25), focusing power supply A (24), focusing power supply C (23), focusing power supply B (21), focusing power supply D (20) and auxilliary inclined to one side power supply (22);
The upper end, back the right of drum (78) is fixed with 3A frame (39), be fixed with AIC control chamber (43) on the 3A frame (39), AFC driving mechanism (36), magnetic bias power supply box (37), AFC control chamber (38), AIC sampling cabinet (40) wherein, has electron gun filament power supply (45) and AIC panel (44) in the AIC control chamber (43); The lower end, back the right of drum (78) is fixed with the magnetron assembly (49) of Wave guide system, magnetron protection hurdle (46) is socketed in magnetron assembly (49) magnetron assembly (49) of Wave guide system, an end of middle-end and balance weight assembly (48) is connected under back the right of drum (78), the other end of balance weight assembly (48) is fixed with and supports B (47), and the other end that supports B (47) is fixed on the winding mechanism (42) of support arm (9); Be fixed with main pulse transformator (72) on the balance weight assembly (48), main pulse transformer low voltage input (71) is housed on the main pulse transformator (72), main pulse transformer high-voltage input (70), main pulse transformer high-voltage outfan (69), one end of high pressure resistant cable (73) is fixed on the main pulse transformator (72), the other end is received on the electron gun (65) of support arm (9), and passivation circuit board (75) is fixed on magnetron protection hurdle (46); Support arm (9) comprising: titanium pump support (1) is connected with the titanium pump (2) of Wave guide system, an end that supports A (41) is fixed on the support arm shell, the other end that supports A (41) is fixed on the winding mechanism (42), ADC sampling box (10) is fixed on the inner upper left side of support arm (9), treatment head (13) is fixed on the preceding lower surface of support arm (9), treatment skull (12) covers the outside of treatment head (13), accelerating tube (89) is fixed in the through hole of inside of support arm (9), the rear end links to each other with electron gun (65), simultaneously having interface at the front and back sides of accelerating tube (89) links to each other with Wave guide system, accelerating tube (89) is at the front end of the inside of support arm (9), after leading flank and the interface that Wave guide system links to each other, export orientation coil (88) is installed successively, vacuum box (7); Main bias magnet (28) is fixed on support arm (9) inboard around vacuum box (7), range finding lamp (15) is fixed on support arm (9) outside, treatment head (13) inside is equipped with elementary collimation awl (90) from top to bottom successively, goes up diaphragm assembly (91), diaphragm assembly (92) down, adnexa pedestal (94) and calimator assembly (14); Wherein, last diaphragm assembly (91) outside is socketed with scale assembly (93); Hydroecium (76) is installed in the outer bottom of support arm (9) rear end, and in addition, shield assembly (11) is arranged around the vacuum box (7) in treatment head (13) and the support arm (9) according to practical situation.
2. a kind of medical linear accelerator mechanism according to claim 1 is characterized in that: horizontal 3, vertical 2 dividing plates form 11 independently spaces;
3. a kind of medical linear accelerator mechanism according to claim 1 is characterized in that: the winding mechanism in the support arm also available disk line bucket or pulley jack substitutes;
4. a kind of medical linear accelerator mechanism according to claim 1 is characterized in that: the winding mechanism in the support arm also can directly be fixed on line on the center of rotation of bulging rear end and substitute.
5. a kind of medical linear accelerator mechanism according to claim 1 is characterized in that: aerial ionization chamber/export orientation power supply in drum, a treatment control chamber, ADC/ accelerating tube control chamber, complete machine low-tension supply, distribution box, auxiliary connection is protected box, main inclined to one side power supply, auxilliary inclined to one side power supply, focusing power supply A, focusing power supply B, focusing power supply C, focusing power supply D, the magnetron magnet power supply, the magnetron heater power supply, the installation site and the mode of 3A frame and top mounted component thereof etc. can be modified or change as required.
6. a kind of medical linear accelerator mechanism according to claim 1 is characterized in that: remove the synthetic bridge of power, phase shifter in this microwave system, increase a water load and become the straight feedback system of microwave in the microwave system of accelerating tube outlet.
7. a kind of medical linear accelerator mechanism according to claim 1, it is characterized in that: the centrage of the line of its axis and treatment head (13), the centrage of drum (78) will cross and be a bit, and the line of its axis is 45 with the centrage for the treatment of head (13) simultaneously.
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| CN101966369A (en) * | 2010-10-28 | 2011-02-09 | 江苏海明医疗器械有限公司 | Intelligent joint protection control system for medicinal linear accelerator |
| CN102075180A (en) * | 2010-11-15 | 2011-05-25 | 江苏海明医疗器械有限公司 | Signal transmitting circuit used in high-power pulse modulator |
| CN102595764A (en) * | 2012-03-13 | 2012-07-18 | 苏州爱因智能设备有限公司 | Automatic frequency control driving device for electronic linear accelerator |
| CN104174120A (en) * | 2014-02-18 | 2014-12-03 | 上海联影医疗科技有限公司 | Linear accelerator |
| US9504854B2 (en) | 2012-03-29 | 2016-11-29 | Mitsubishi Electric Corporation | Rotating gantry and particle beam therapy system |
| CN110520193A (en) * | 2017-03-14 | 2019-11-29 | 瓦里安医疗系统公司 | Rotatable cantilever open frame in radiotherapy system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101966369A (en) * | 2010-10-28 | 2011-02-09 | 江苏海明医疗器械有限公司 | Intelligent joint protection control system for medicinal linear accelerator |
| CN102075180A (en) * | 2010-11-15 | 2011-05-25 | 江苏海明医疗器械有限公司 | Signal transmitting circuit used in high-power pulse modulator |
| CN102075180B (en) * | 2010-11-15 | 2012-07-18 | 江苏海明医疗器械有限公司 | Signal transmitting circuit used in high-power pulse modulator |
| CN102595764A (en) * | 2012-03-13 | 2012-07-18 | 苏州爱因智能设备有限公司 | Automatic frequency control driving device for electronic linear accelerator |
| US9504854B2 (en) | 2012-03-29 | 2016-11-29 | Mitsubishi Electric Corporation | Rotating gantry and particle beam therapy system |
| TWI572392B (en) * | 2012-03-29 | 2017-03-01 | 三菱電機股份有限公司 | Rotating gantry and particle line therapy apparatus |
| CN104174120A (en) * | 2014-02-18 | 2014-12-03 | 上海联影医疗科技有限公司 | Linear accelerator |
| CN110520193A (en) * | 2017-03-14 | 2019-11-29 | 瓦里安医疗系统公司 | Rotatable cantilever open frame in radiotherapy system |
| CN110520193B (en) * | 2017-03-14 | 2022-09-23 | 瓦里安医疗系统公司 | Rotatable cantilever gantry in a radiation therapy system |
| CN112492877A (en) * | 2018-05-25 | 2021-03-12 | 微普创新私人有限公司 | Improvements in linear accelerators |
| CN112492877B (en) * | 2018-05-25 | 2023-05-12 | 微普创新私人有限公司 | Improvements to linear accelerators |
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