CN115607852B - Modularized rotatable neutron therapeutic machine - Google Patents
Modularized rotatable neutron therapeutic machine Download PDFInfo
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- CN115607852B CN115607852B CN202211242636.8A CN202211242636A CN115607852B CN 115607852 B CN115607852 B CN 115607852B CN 202211242636 A CN202211242636 A CN 202211242636A CN 115607852 B CN115607852 B CN 115607852B
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- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 230000001276 controlling effect Effects 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims description 18
- 206010028980 Neoplasm Diseases 0.000 abstract description 10
- 238000010884 ion-beam technique Methods 0.000 description 6
- 201000011510 cancer Diseases 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009203 neutron therapy Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1077—Beam delivery systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
- A61N5/1065—Beam adjustment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/109—Neutrons
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
Abstract
The invention relates to the field of medical equipment, in particular to a modularized rotatable neutron therapeutic machine, which aims to solve the problem that the existing neutron therapeutic machine cannot flexibly adjust the irradiation angle and the irradiation intensity. For this purpose, the neutron therapeutic machine comprises a bracket, a rotating rack, a rotating beam transmission line and a regulating and controlling moderating layer module, wherein the rotating rack is rotatably arranged on the bracket, the rotating beam transmission line is arranged on the rotating rack and rotates along with the rotating rack, and beam outlets with different angles are arranged on the rotating beam transmission line; the regulating and controlling moderating layer module is arranged on the bracket in a rotating way and is coaxially arranged with the rotating frame, and the regulating and controlling moderating layer module is provided with a plurality of moderating layers along the circumferential direction. By adjusting the position of the rotating frame, selecting beam outlets with different angles from the rotating beam transmission line and rotating the regulating and controlling moderating layer module, the invention can output neutron beams suitable for tumors with specific depth, specific position and specific size, and realize the customized treatment of 'one person one scheme' of patients.
Description
Technical Field
The invention relates to the field of medical equipment, and particularly provides a modularized rotatable neutron therapeutic machine.
Background
Neutron therapy has wide application prospect as a new therapy for cancer treatment. The principle is that neutron rays are generated to irradiate the tumor of a patient, so that the neutron rays react with boron which is taken in advance and gathered in cancer cells of the patient, rays with the range of only one cancer cell length are generated, normal cells are not damaged as much as possible while the cancer cells are eliminated, and the purpose of treating the cancer is achieved. Because the position, depth and size and shape of the focus are different, if the irradiation with different angles and different intensities can be performed according to the specific condition of the patient, the treatment effect is better.
The therapeutic machine of the traditional neutron therapeutic device can only control the intensity of the neutron beam by controlling the intensity of the ion beam, the angle transformation is not flexible, and the customized therapeutic scheme can not be designed according to different conditions of different patients. For example, chinese patent application CN109011220a discloses a neutron capture therapy system, which includes an ion beam generating system, an ion beam switching system, and a neutron therapy system, in order to achieve neutron irradiation at a plurality of angles at the same time, the direction of the ion beam is adjusted by the type or arrangement of deflection magnets in the ion switching system, but the method can only achieve switching at two angles in one direction, and cannot achieve neutron beam intensity adjustment.
Accordingly, there is a need in the art for a new neutron therapeutic apparatus that addresses the above-described problems.
Disclosure of Invention
The invention aims to solve the technical problems that the existing neutron therapeutic machine can not flexibly adjust the irradiation angle and the irradiation intensity. To this end, the invention provides a modular rotatable neutron therapeutic apparatus comprising: a bracket; a rotating frame rotatably provided on the bracket; the rotating beam transmission line is arranged on the rotating rack and rotates along with the rotating rack, and beam outlets with different angles are arranged on the rotating beam transmission line; the regulating and controlling moderation layer module is rotationally arranged on the support and is coaxial with the rotating frame, the regulating and controlling moderation layer module is circumferentially provided with a plurality of moderation layers, and the moderation layers are all positioned on one side of the beam outlet close to the patient.
In the specific embodiment of the rotatable neutron therapeutic apparatus with modularization, the rotating rack comprises a rack main body, wherein the two sides of the rack main body are respectively provided with a rack power slewing bearing and a rack driven slewing bearing, the rack main body is rotatably arranged on the bracket through the rack power slewing bearing and the rack driven slewing bearing, and the rack power slewing bearing is provided with a first transmission tooth; a frame motor arranged on the bracket, a frame power gear arranged at the output end of the frame motor and meshed with the first transmission gear
In the above embodiment of the rotatable neutron therapeutic apparatus with modularization, the rotating beam transmission line includes a rotating beam tube, and the rotating beam tube is disposed on the rotating frame; the deflection magnets are arranged on the rotating beam tube and are used for deflecting particle beams in the rotating beam tube at different angles and then emitting the particle beams from corresponding beam outlets.
In the specific embodiment of the rotatable neutron therapeutic apparatus with modularization, the rotating beam tube comprises a connecting section, a steering section and a deflection section which are sequentially communicated, the connecting section is horizontally arranged, the axis coincides with the axis of the rotating frame, one end of the connecting section is connected with the front beam tube, the other end of the connecting section is communicated with the steering section, the steering section is arranged along the radial direction of the rotating frame, the axis of the deflection section is parallel to the axis of the rotating frame, and the beam outlet is arranged on the deflection section.
In the specific embodiment of the rotatable neutron therapeutic apparatus with modularization, the deflection magnet comprises a first 90-degree deflection magnet, a second 90-degree deflection magnet, a plurality of intermediate deflection magnets and a third 90-degree deflection magnet, wherein the first 90-degree deflection magnet is arranged at the joint of the connecting section and the deflection section, the second 90-degree deflection magnet is arranged at the joint of the deflection section and the deflection section, and the plurality of intermediate deflection magnets and the third 90-degree deflection magnet are sequentially arranged on the deflection section; the beam outlets correspond to the middle deflection magnets and the 90-degree deflection magnets, and each beam outlet is provided with a target body.
In the above embodiment of the rotatable neutron therapeutic apparatus with modularization, the plurality of intermediate deflection magnets comprises 30-degree deflection magnets and 60-degree deflection magnets, and the beam outlet has three beam outlets corresponding to the 30-degree deflection magnets, the 60-degree deflection magnets and the 90-degree deflection magnets respectively.
In the above embodiment of the rotatable neutron therapeutic apparatus with modularization, the emitting directions of the three beam outlets are converged at the center point of the therapeutic area.
In the specific embodiment of the rotatable neutron therapeutic machine with modularization, the moderating layer regulation module comprises a moderating layer rotary cylinder which is rotatably arranged on the bracket and is positioned at the inner side of the rotating frame and is coaxial with the rotating frame; the regulating and controlling moderating layer is arranged on the inner side of the moderating layer rotary cylinder and rotates along with the moderating layer rotary cylinder, and the regulating and controlling moderating layer comprises a plurality of moderating layers along the circumferential direction.
In the specific embodiment of the rotatable neutron therapeutic machine with modularization, the regulation and control moderating layer module further comprises a moderating layer power slewing bearing and a moderating layer driven slewing bearing which are respectively arranged at two sides of the moderating layer slewing cylinder, and the moderating layer power slewing bearing is provided with second transmission teeth; the moderating layer mounting plate is arranged on the bracket and is positioned on one side far away from the center point of the treatment area, and the moderating layer rotary cylinder is rotationally arranged on the moderating layer mounting plate through the moderating layer driven rotary support; the motor support is arranged on the support, a moderating layer driving gear is arranged at the output end of the moderating layer rotating motor, and the moderating layer driving gear is meshed with the second transmission gear.
In the specific embodiment of the rotatable neutron therapeutic apparatus with modularization, the support comprises a front support and a rear support which are oppositely arranged, and two ends of the rotating frame are respectively arranged on the front support and the rear support.
Under the condition of adopting the technical scheme, the invention is provided with three main modules, namely the rotating frame, the rotating beam transmission line and the regulating and controlling slowing layer module, and the plane of the beam opening is determined by adjusting the position of the rotating frame; selecting a beam outlet with an angle from beam outlets with different angles on a rotary beam transmission line, and determining an irradiation angle; the moderating layer module is regulated and controlled in a rotating way, and the corresponding moderating layer is moved to one side of the beam outlet, so that neutron beams adapting to tumors with specific depth, specific position and specific size can be output, customized treatment of 'one person one scheme' of a patient can be realized, and extra injury to the patient is reduced. In addition, through reasonable arrangement and fusion of the three modules, the invention can reduce the occupied area under the condition of realizing the functions, is convenient for the operation of patients, and has flexible and simple operation, and is convenient for popularization and application.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall structure of the present invention at an angle;
FIG. 2 is another angular schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the structure of the rotating gantry of the present invention;
FIG. 4 is a schematic diagram of a rotating beam transport line in accordance with the present invention;
FIG. 5 is a schematic structural diagram of a modulation and control moderation layer module in the present invention;
FIG. 6 is a schematic diagram of a moderating layer distribution of a moderating layer in the present invention;
FIG. 7 is one embodiment of the overall structure of the present invention;
fig. 8 is another embodiment of the overall structure of the present invention.
In the figure: 1. the treatment device comprises a bracket, 11, a front bracket, 12, a rear bracket, 2, a rotating bracket, 21, a bracket main body, 22, a bracket power slewing bearing, 221, a first transmission tooth, 23, a bracket driven slewing bearing, 24, a bracket motor, 25, a bracket power gear, 3, a rotating beam transmission line, 31, a rotating beam pipe, 311, a connecting section, 312, a steering section, 313, a deflecting section, 321, 90-degree deflecting magnet I, 322, 90-degree deflecting magnet II, 323, 30-degree deflecting magnet, 324, 60-degree deflecting magnet, 325, 90-degree deflecting magnet III, 33, a beam outlet, 34, a target body, 4, a regulating and controlling slow layer module, 41, a slow layer slewing cylinder, 42, a regulating slow layer, 431, a slow layer I, 432, a slow layer II, 433, a slow layer III, 434, a slow layer IV, 435, a slow layer V, 44, a slow layer power slewing bearing, 441, a second transmission tooth, 45, a slow layer driven slewing bearing, 46, a slow layer 47, a slow layer rotating motor, a 47, a slow layer rotating mounting plate, a target body, a 4, a driving layer bracket, a driving area 48 and a treatment area 5.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adapt it as desired to suit a particular application. For example, although described in the specification in connection with a motor driving a gear to rotate, this is not limiting and one skilled in the art may select other suitable driving means as desired, as long as the driving means may achieve rotation of the rotating gantry or regulate the rotation of the slowing layer module.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the relevant devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the ordinal terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Furthermore, in order to more clearly show the core technical solution of the present invention, descriptions of well-known structures of the neutron therapeutic machine are omitted in the following description, but such omission is merely for convenience of description and does not mean that the neutron therapeutic machine may have no such structures.
As shown in fig. 1-6, the invention provides a modularized rotatable neutron therapeutic machine, in order to solve the problem that the neutron therapeutic machine in the prior art cannot flexibly adjust the irradiation angle and irradiation intensity, three main modules are provided, namely a rotating frame 2, a rotating beam transmission line 3 and a regulating and controlling slowing layer module 4, wherein beam outlets 33 with different angles are arranged on the rotating beam transmission line 3, and multi-angle ejection in one plane can be realized; the rotating frame 2 is rotatably arranged on the bracket 1, the rotating beam transmission line 3 is arranged on the rotating frame 2 and rotates along with the rotating frame 2, so that the beam outlet 33 also rotates along with the circumference of the rotating frame 2, and irradiation of different angles on different planes is realized.
Because the position of the beam outlet 33 is movable, in order to adjust the irradiation intensity, the position of the moderating layer needs to be moved, the moderating layer module 4 is provided with a plurality of moderating layers along the circumferential direction, the materials of different moderating layers are different, the irradiated intensity is also different, the moderating layer module 4 is rotatably arranged on the bracket 1 and coaxially arranged with the rotating frame 2, and can rotate relative to the rotating frame 2, and the moderating layers are all positioned on one side of the beam outlet 33 close to the patient. By rotating the moderating layer module 4, different moderating layers are moved to the side of the beam outlet 33 close to the patient, and different irradiation intensities can be switched.
In the use process, the plane of the beam port 33 is determined by adjusting the position of the rotary frame 2; selecting one angle beam outlet from beam outlets 33 with different angles on the rotating beam transmission line 3, and determining an irradiation angle; the corresponding moderating layer is moved to one side of the beam outlet 33 by rotating the moderating layer regulating module 4, so that neutron beams adapting to tumors with specific depth, specific position and specific size can be output, customized treatment of 'one person one scheme' of a patient can be realized, extra injury to the patient is reduced, and the adjustment sequence of the three modules can be determined according to actual conditions.
Because the neutron treatment device is very huge in structure, if the neutron treatment device is combined with a more huge rotating device for adjusting the irradiation angle, a very large space is needed, popularization of the neutron treatment device is not facilitated, the angle adjustment can be realized through reasonable arrangement and fusion of the three modules, the intensity adjustment can be realized, the occupied area can be reduced under the condition of realizing the function, the operation of a patient is facilitated, and the operation is flexible and simple, and is convenient to popularize and apply.
Further, as shown in fig. 3, in this embodiment, in order to drive the rotating frame 2 to rotate, two sides of the frame main body 21 are respectively provided with a frame power slewing bearing 22 and a frame driven slewing bearing 23, the frame main body 21 is rotatably arranged on the bracket 1 through the frame power slewing bearing 22 and the frame driven slewing bearing 23, a first transmission gear 221 is arranged on the frame power slewing bearing 22, a frame motor 24 is arranged on the bracket 1, and a frame power gear 25 is arranged on an output end of the frame motor 24 and meshed with the first transmission gear 221 to drive the frame power slewing bearing 22 to rotate for 360 degrees; the transmission mode in this scheme is simple, easily realizes, and occupation of land space is also little, and convenient and other module cooperation.
Further, as shown in fig. 4, in this embodiment, in order to enable the rotating beam transmission line 3 to emit neutron beams from beam outlets 33 with different angles, the rotating beam transmission line 3 includes a rotating beam tube 31 and a deflection magnet, the rotating beam tube 31 is disposed on the rotating frame 2, one end of the rotating beam tube 31 is connected to a front beam tube, and in operation, a particle beam generated by an accelerator is emitted into the rotating beam tube 31 through the front beam tube; a plurality of deflection magnets are disposed on the rotating beam tube 31 for deflecting the particle beam in the rotating beam tube 31 at different angles and then emitting the particle beam from the corresponding beam outlet 33.
Further, as shown in fig. 4, in this embodiment, in order to satisfy that the rotating beam transmission line 3 can rotate along with the rotating frame and has beam outlets with different angles, the rotating beam tube 31 includes a connecting section 311, a turning section 312 and a deflecting section 313 which are sequentially communicated, the connecting section 311 is horizontally arranged, and the axis of the connecting section 311 coincides with the axis of the rotating frame 2, so that when the rotating beam tube 31 rotates along with the rotating frame 2, the connecting section 311 does not move radially, is always located at the axis of the rotating frame 2 and is used for being conveniently connected with a front beam tube, a particle beam is injected into the connecting section 311 from the front beam tube, and the connecting section 311 and the front beam tube adopt a connection mode of dynamic seal so as to ensure that the vacuum degree in the whole rotating beam tube 31 meets the requirement during rotation; the rotating gantry 2 is provided with a treatment region along its axis, so that the particle beam can be directed to the treatment region from different angles, the direction of the particle beam entering the connecting section 311 needs to be deflected and then be ejected, one end of the connecting section 311 is used for connecting with a front beam tube, the other end is communicated with the turning section 312, the turning section 312 is arranged along the radial direction of the rotating gantry 2, the axis of the turning section 313 is parallel to the axis of the rotating gantry 2, and the particle beam enters the connecting section 311 from the front beam tube, passes through the turning section 312 and then is ejected from different beam outlets 33 on the turning section 313.
Further, as shown in fig. 4, in order to deflect the particle beam multiple times, the deflection magnet in this embodiment includes a first 90-degree deflection magnet 321, a second 90-degree deflection magnet 322, a plurality of intermediate deflection magnets and a third 90-degree deflection magnet 325, the first 90-degree deflection magnet 321 being disposed at the connection between the connection section 311 and the deflection section 312, and the second 90-degree deflection magnet 322 being disposed at the connection between the deflection section 312 and the deflection section 313 for deflecting the particle beam in the connection section 311 into the deflection section 313; the plurality of intermediate deflection magnets and the 90-degree deflection magnet III 325 are sequentially arranged on the deflection section 313, the plurality of intermediate deflection magnets are used for deflecting the particle beams in the deflection section 313 to different angles and then emitting the particle beams, and the 90-degree deflection magnet III 325 is used for deflecting the particle beams in the deflection section 313 to 90 degrees and then emitting the particle beams. The beam outlets 33 correspond to the middle deflection magnets and the 90-degree deflection magnets III 325, and each beam outlet 33 is provided with a target 34, and the particle beam is deflected to bombard the target 34 and then is emitted from the beam outlet 33. The number, position and angle of the deflection magnets can be adjusted according to the actual situation, and the number of beam outlets 33 is not limited to the above-described manner, but varies with the number of magnets.
Further, as shown in fig. 4, the plurality of intermediate deflection magnets in the present embodiment includes 30-degree deflection magnets 323 and 60-degree deflection magnets 324, while three beam outlets 33 are provided, corresponding to 30-degree deflection magnets 323, 60-degree deflection magnets 324, and 90-degree deflection magnets three 325, respectively.
Further, the particle emission directions of the three beam outlets 33 are converged at the treatment region center point 5. In this embodiment, in order to avoid moving the patient during the treatment, the treatment area center point 5 is set on the axis of the rotating gantry 2, and the emission directions of the three beam outlets 33 are converged at the treatment area center point 5, so that only one beam outlet 33 emits neutron beams at the same time, no matter which beam outlet 33 is selected to emit the beams, the treatment area center point 5 is irradiated, the patient is not required to be moved, the discomfort of the patient is reduced, and the treatment time is shortened.
Further, as shown in fig. 5, in this embodiment, in order to facilitate switching between different moderating layers, the moderating layer module 4 includes a moderating layer rotary drum 41 and a moderating layer 42, the moderating layer rotary drum 41 is rotatably disposed on the support 1, the moderating layer rotary drum 41 is coaxial with the rotating frame 2, in order to facilitate the neutron beam to pass through the moderating layer after being emitted from the beam outlet 33, the moderating layer rotary drum 41 is located at the inner side of the rotating frame 2, the moderating layer 42 is disposed at the inner side of the moderating layer rotary drum 41, and the moderating layer 42 includes a plurality of moderating layers along the circumferential direction. Different numbers of moderating layers can be arranged according to the requirement, 5 moderating layers are arranged in the embodiment, as shown in fig. 6, 5 moderating layers are respectively a first moderating layer 431, a second moderating layer 432, a third moderating layer 433, a fourth moderating layer 434, a fifth moderating layer 435, each 72 DEG, the material thickness of each moderating layer is different, and the treatment requirement of tumors with different depths can be met; other moderating layer materials may also be selected as desired.
Further, in the present embodiment, as shown in fig. 5, in order to make the regulation and control of the rotation of the moderating layer module 4 possible while not interfering with the rotation of the rotating frame 2, both sides of the moderating layer rotary cylinder 41 are respectively provided with the moderating layer power rotary support 44 and the moderating layer driven rotary support 45, the moderating layer rotary cylinder 41 is rotatably provided on the moderating layer mounting plate 46 through the moderating layer driven rotary support 45, and the moderating layer mounting plate 46 is provided on the bracket 1, so that the rotation of the rotating frame 2 and the rotation of the regulation and control of the moderating layer module 4 do not interfere, and can be rotated to an appropriate angle, respectively.
As shown in fig. 2, in this embodiment, the slowing layer mounting plate 46 is mounted on one side of the frame 1 far from the center point 5 of the treatment area, and is located between the connection section 311 and the slowing layer rotary drum 41, on the one hand, to serve as a base of the slowing layer rotary drum 41, and on the other hand, to shield the accelerator and the front beam tube on the other side, so as to reduce noise generated by the front end device, improve the comfort of the patient during treatment, and reduce the stress of the patient.
As shown in fig. 5, in order to drive and regulate the rotation of the moderating layer module 4, the moderating layer power slewing bearing 44 is provided with a second transmission gear 441, the moderating layer rotating motor 47 is arranged on the bracket 1 through a motor bracket 49, the output end of the moderating layer rotating motor 47 is provided with a moderating layer driving gear 48, the driving gear 48 is meshed with the second transmission gear 441 to drive the moderating layer power slewing bearing 44 to rotate for 360 degrees, and the height of the motor bracket 49 can be adjusted according to actual needs, so that the moderating layer power slewing bearing 44 and the driving gear 48 keep good meshing.
Further, as shown in fig. 1 and 2, in order to facilitate installation of the rotating frame 2 and control of the moderating layer module 4 in this embodiment, the support 1 includes a front support 11 and a rear support 12 that are disposed opposite to each other, two ends of the rotating frame 2 are disposed on the front support 11 and the rear support 12, respectively, the front support 11 may be provided with a driving device for controlling the moderating layer module 4, such as a moderating layer rotating motor 47, and the rear support 12 may be provided with a driving device for the rotating frame 2, so that the structural arrangement of the whole machine is optimized, and installation and maintenance are facilitated.
As shown in fig. 7 and 8, two embodiments of the overall structure of the present invention are shown, in fig. 7, the rotating beam transmission line 3 rotates along with the rotating frame 2, the 30-degree deflection magnet 323 works, and transmits and outputs 30-degree ion beams to the target 34, and neutron flows are emitted from 10 o' clock along the dotted line, and the moderating layer module 4 is rotated to enable the neutron flows to pass through the moderating layer one 431, and output neutron beams with proper intensity to irradiate a patient for treatment; in fig. 8, the rotating beam transmission line 3 rotates along with the rotating frame 2, the 60-degree deflection magnet 324 works, and transmits and outputs an ion beam of 60 degrees to the target 34, and a neutron stream is emitted from the 12 o' clock direction along a dotted line, and the moderating layer module 4 is rotated to enable the neutron stream to pass through the moderating layer two 432, so that a neutron beam with proper intensity is output to irradiate a patient, and the purpose of treatment is achieved. If fig. 7 and fig. 8 are combined, for example, the treatment mode of fig. 7 is performed first, then the operation is switched to 60-degree deflection magnet 324, and the rotating gantry 2 and the moderating layer module 4 are rotated to the position of fig. 8 for irradiation, so that neutron irradiation schemes with different angles and different intensities are realized; in addition to the three listed schemes, more treatment schemes can be combined in the actual treatment process, so that accurate treatment of patients is realized.
In this embodiment, a positioning structure may be further disposed on one side of the rotating frame 2 and the adjustment and control slowing layer module 4, for accurately detecting and controlling the rotation angles of the rotating frame 2 and the adjustment and control slowing layer module 4, for example, a first angle sensor may be disposed on one side of the frame power slewing bearing 22 or the frame power gear 25, for detecting the degree of rotation of the frame power slewing bearing 22 or the frame power gear 25, and when the frame power slewing bearing 22 is detected to rotate to a specified position, the first angle sensor transmits a signal to stop the rotation of the frame power slewing bearing 22, so that the rotating beam transmission line 3 is stopped to a specified angle; similarly, a second angle sensor may be disposed on one side of the slow-layer power slewing bearing 44 or the slow-layer driving gear 48, for detecting the degree of rotation of the slow-layer power slewing bearing 44 or the slow-layer driving gear 48, and when detecting that the slow-layer power slewing bearing 44 rotates to a specified position, the second angle sensor transmits a signal to stop the rotation of the slow-layer rotating motor 47, so that the adjustment and control slow-layer module 4 stops to a specified angle.
Through setting up first angle sensor and second angle sensor, can control rotating gantry 2 and regulate and control the rotation angle of moderating layer module 4 accurately, and then control neutron beam's ejection angle and intensity.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (9)
1. A modular rotatable neutron therapeutic machine, the neutron therapeutic machine comprising:
a bracket (1);
a rotating frame (2) rotatably provided on the bracket (1);
the rotating beam transmission line (3) comprises a rotating beam tube (31), deflection magnets and beam outlets (33) with different angles, wherein the rotating beam tube (31) is arranged on the rotating frame (2) and rotates along with the rotating frame (2), and a plurality of the deflection magnets are arranged on the rotating beam tube (31) and are used for deflecting particle beams in the rotating beam tube (31) with different angles and then emitting from the corresponding beam outlets (33);
the regulating and controlling moderating layer module (4) is rotationally arranged on the support (1) and is coaxial with the rotating frame (2), the regulating and controlling moderating layer module (4) is circumferentially provided with a plurality of moderating layers, and the moderating layers are all positioned on one side, close to a patient, of the beam outlet (33).
2. The modular rotatable neutron therapeutic machine according to claim 1, characterized in that the rotating gantry (2) comprises:
the machine frame comprises a machine frame main body (21), wherein a machine frame power slewing bearing (22) and a machine frame driven slewing bearing (23) are respectively arranged on two sides of the machine frame main body (21), the machine frame main body (21) is rotatably arranged on the bracket (1) through the machine frame power slewing bearing (22) and the machine frame driven slewing bearing (23), and a first transmission gear (221) is arranged on the machine frame power slewing bearing (22);
the rack motor (24) is arranged on the bracket (1), a rack power gear (25) is arranged at the output end of the rack motor (24), and the rack power gear (25) is meshed with the first transmission gear (221).
3. The modularized rotatable neutron therapeutic machine according to claim 1, wherein the rotating beam tube (31) comprises a connecting section (311), a steering section (312) and a deflection section (313) which are communicated in sequence, the connecting section (311) is horizontally arranged, the axis coincides with the axis of the rotating frame (2), one end of the connecting section (311) is connected with a front beam tube, the other end is communicated with the steering section (312), the steering section (312) is arranged along the radial direction of the rotating frame (2), the axis of the deflection section (313) is parallel to the axis of the rotating frame (2), and the beam outlet (33) is arranged on the deflection section (313).
4. A modular rotatable neutron therapeutic machine according to claim 3, characterised in that the deflection magnets comprise a first 90 degree deflection magnet (321), a second 90 degree deflection magnet (322), a plurality of intermediate deflection magnets and a third 90 degree deflection magnet (325), the first 90 degree deflection magnet (321) being arranged at the junction of the connecting section (311) and the deflector section (312), the second 90 degree deflection magnet (322) being arranged at the junction of the deflector section (312) and the deflector section (313), the plurality of intermediate deflection magnets and the third 90 degree deflection magnets (325) being arranged in sequence on the deflector section (313);
the beam outlets (33) correspond to the middle deflection magnets and the 90-degree deflection magnets (325), and a target body (34) is arranged on each beam outlet (33).
5. The modular rotatable neutron therapeutic machine of claim 4, wherein the plurality of intermediate deflection magnets includes 30 degree deflection magnets (323) and 60 degree deflection magnets (324), the beam outlet (33) being three corresponding to the 30 degree deflection magnets (323), the 60 degree deflection magnets (324) and the 90 degree deflection magnets (325), respectively.
6. The modular rotatable neutron therapeutic machine according to claim 5, characterized in that the emission directions of the three beam outlets (33) converge at a central point (5) of the treatment area.
7. The modular rotatable neutron therapeutic machine according to claim 1, characterized in that the regulatory moderating layer module (4) comprises:
a slowing layer rotary drum (41), wherein the slowing layer rotary drum (41) is rotatably arranged on the bracket (1) and is positioned at the inner side of the rotary frame (2) and is coaxial with the rotary frame (2);
and the regulating and controlling moderating layer (42), wherein the regulating and controlling moderating layer (42) is arranged on the inner side of the moderating layer rotary drum (41) and rotates along with the moderating layer rotary drum (41), and the regulating and controlling moderating layer (42) comprises a plurality of moderating layers along the circumferential direction.
8. The modular rotatable neutron therapeutic machine of claim 7, wherein the moderating layer module (4) further comprises:
a moderating layer power slewing bearing (44) and a moderating layer driven slewing bearing (45) which are respectively arranged at two sides of the moderating layer slewing cylinder (41), wherein the moderating layer power slewing bearing (44) is provided with a second transmission tooth (441);
the moderating layer mounting plate (46), the moderating layer mounting plate (46) is arranged on the bracket (1) and is positioned at one side far away from the center point (5) of the treatment area, and the moderating layer rotary cylinder (41) is rotatably arranged on the moderating layer mounting plate (46) through the moderating layer driven rotary support (45);
the motor support (49) is arranged on the support (1), a moderating layer driving gear (48) is arranged at the output end of the moderating layer rotating motor (47), and the moderating layer driving gear (48) is meshed with the second transmission gear (441).
9. The modular rotatable neutron therapeutic machine according to any one of claims 1 to 8, wherein the support (1) comprises a front support (11) and a rear support (12) arranged opposite each other, the two ends of the rotating gantry (2) being arranged on the front support (11) and the rear support (12), respectively.
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Effective date of registration: 20231207 Address after: Room 12-2, Building 3, No. 37 Jingyang Road, High tech Zone, Shapingba District, Chongqing, 401331 Patentee after: Guozhong Medical Technology (Chongqing) Co.,Ltd. Address before: 1058, No.25, Daxue Chengzhong Road, Huxi Street, Shapingba District, Chongqing 401331 Patentee before: Neutron High tech Industry Development (Chongqing) Co.,Ltd. |