Support structure of neutron generation system and neutron capture treatment system

Abstract

The utility model relates to a supporting structure of a neutron generation system and a neutron capture treatment system, the supporting structure is used for supporting the neutron generation system, the neutron generation system comprises a beam transmission structure and a beam shaping body, and the supporting structure of the neutron generation system comprises a first supporting assembly. The first supporting assembly is connected with the top of the treatment room, and the first supporting assembly is at least used for partially supporting the beam shaping body; and / or, the supporting structure of the neutron generation system comprises a second supporting assembly, the second supporting assembly penetrates through the top of the treatment room, and the second supporting assembly is at least used for partially supporting the beam transmission structure penetrating through the top of the treatment room. According to the utility model, the beam shaping body and the beam transmission assembly can be installed and supported in the vertical direction, neutron beams can be ensured to enter a treatment room vertically, and neutron capture treatment in the vertical direction is realized.

Description

Technical Field

[0001] This utility model relates to radiation irradiation systems, and more particularly to a support structure for a neutron generation system and a neutron capture therapy system. Background Technology

[0002] With the development of atomic science, radiation therapy, such as cobalt-60, linear accelerators, and electron beams, has become one of the main methods of cancer treatment. However, traditional photon or electron therapy is limited by the physical conditions of radiation itself. While killing tumor cells, it also damages a large amount of normal tissue along the beam path. In addition, due to the different sensitivities of tumor cells to radiation, traditional radiation therapy is often ineffective for more radiation-resistant malignant tumors (such as glioblastoma multiforme and melanoma).

[0003] To reduce radiation damage to surrounding normal tissues, the concept of targeted therapy in chemotherapy has been applied to radiotherapy. Furthermore, for highly radiation-resistant tumor cells, radiation sources with high relative biological effectiveness (RBE) are being actively developed, such as proton therapy, heavy ion therapy, and neutron capture therapy. Neutron capture therapy combines these two concepts; for example, boron neutron capture therapy utilizes the specific accumulation of boron-containing drugs on tumor cells, combined with precise neutron beam modulation, to provide a better cancer treatment option than traditional radiation.

[0004] Radiation therapy generates various types of radiation, such as low-energy to high-energy neutrons and photons produced during boron neutron capture therapy. This radiation can cause varying degrees of damage to normal human tissues. In the field of radiation therapy, equipment is typically housed in concrete buildings to isolate it from potential radiation. Beam shaping devices are also installed to adjust the energy of the beam, ensuring effective treatment while minimizing radiation contamination of the environment and other non-treatment areas. The placement of the radiation irradiation system within the concrete building and its installation method significantly impact the effectiveness of treatment and ensure radiation safety. Summary of the Invention

[0005] Currently, for horizontally oriented radiation systems, the installation method involves embedding the beam shaping device into the side wall of the building, with the wall structure itself providing support for the device. However, for vertically oriented radiation systems, this wall-support method is no longer applicable.

[0006] Therefore, the inventors proposed a support structure for a neutron generation system and a neutron capture therapy system, which can meet the requirements for installation and support of the beam shaper and beam transmission structure in the vertical direction, and realize neutron capture therapy in the vertical direction.

[0007] The objective of this utility model can be achieved by the following solutions:

[0008] This invention provides a support structure for a neutron generation system, which supports the neutron generation system. The neutron generation system includes a beam transmission structure and a beam shaper. The support structure includes a first support component, which is connected to the top of the treatment room. The first support component is used to at least partially support the beam shaper.

[0009] In a preferred embodiment of the present invention, the support structure of the neutron generation system further includes a second support component, which extends through the top of the treatment chamber and is used to at least partially support the beam transmission structure.

[0010] In a preferred embodiment of the present invention, the second support component includes an upper end and a plurality of vertically arranged pillars. A first hole is provided in the middle of the upper end. The plurality of pillars are distributed circumferentially below the upper end and the top ends of the plurality of pillars are respectively connected to the bottom surface of the upper end. The plurality of pillars penetrate the top of the treatment chamber vertically. A channel penetrating the top of the treatment chamber is formed between the first hole in the upper end and the plurality of pillars. The channel is used for the beam transmission structure to pass through.

[0011] In a preferred embodiment of the present invention, at least one of the support columns is provided with a connector, which is used to connect the support column to a magnet located outside the transmission tube.

[0012] In a preferred embodiment of the present invention, a plurality of connectors are provided on one of the support columns, and the plurality of connectors are distributed at intervals along the extension direction of the support column.

[0013] In a preferred embodiment of the present invention, the upper end portion protrudes from the upper surface of the top of the treatment chamber.

[0014] In a preferred embodiment of the present invention, a plurality of first fasteners extending outward from the upper end are provided on the upper end, the plurality of first fasteners being distributed circumferentially at intervals along the upper end, and the first fasteners being used to connect the upper end to the top of the treatment room.

[0015] In a preferred embodiment of the present invention, a second fixing member is provided at the lower part of the support column, the second fixing member being used to connect the support column to the top of the treatment room.

[0016] In a preferred embodiment of the present invention, the first support component includes an embedded part and a support frame. The embedded part is connected to the upper part of the support frame and is at least partially disposed in the top of the treatment room. The lower part of the support frame is provided with a support portion, which is used to at least partially support the beam shaping body.

[0017] In a preferred embodiment of the present invention, the first support component further includes a shielding baffle, which is disposed on the side of the first support component.

[0018] In a preferred embodiment of the present invention, at least one side of the shielding baffle is openable and closable.

[0019] In a preferred embodiment of the present invention, when the shielding baffle is fully closed, the shielding baffle surrounds the outside of the support frame.

[0020] In a preferred embodiment of this utility model, the embedded part is provided with a second hole in the middle for the beam transmission structure to pass through; the support frame includes multiple first support rods arranged in the vertical direction and multiple second support rods arranged in the horizontal direction. The multiple first support rods are distributed at intervals along the circumference of the embedded part below the embedded part. The upper part of the multiple first support rods is connected to the embedded part, and the multiple second support rods are connected to the lower part of two adjacent first support rods. The support part is connected to the second support rods.

[0021] In a preferred embodiment of the present invention, the support portion includes a plurality of support legs, and the plurality of support legs are connected to a plurality of second support rods.

[0022] In a preferred embodiment of the present invention, at least one of the first support rods is provided with a support arm, the support arm being used to connect the first support rod and the beam transmission structure.

[0023] In a preferred embodiment of the present invention, the support arm includes multiple connecting segments, and adjacent connecting segments are rotatably connected.

[0024] In a preferred embodiment of the present invention, a neutron shielding material is filled between the beam shaper and the second support rod.

[0025] In a preferred embodiment of the present invention, the first support component further includes a shielding baffle, at least one side of which is openable and closable. When the shielding baffle is closed, the plurality of first support rods and the plurality of second support rods are located within the shielding space formed by the closed shielding baffle.

[0026] In a preferred embodiment of this utility model, the shielding baffle is made of a boron- and lead-containing material.

[0027] This invention provides a support structure for a neutron generation system. The neutron generation system includes a beam transmission structure and a beam shaper. The support structure of the neutron generation system includes a second support component that extends through the top of the treatment chamber. The second support component is used to at least partially support the beam transmission structure.

[0028] In a preferred embodiment of the present invention, the second support component includes an upper end and a plurality of vertically arranged pillars. A first hole is provided in the middle of the upper end. The plurality of pillars are distributed circumferentially below the upper end and the upper parts of the plurality of pillars are respectively connected to the bottom surface of the upper end. The plurality of pillars penetrate the top of the treatment chamber vertically. A channel penetrating the top of the treatment chamber is formed between the first hole in the upper end and the plurality of pillars. The channel is used for the beam transmission structure to pass through.

[0029] In a preferred embodiment of the present invention, at least one of the support columns is provided with a connector, which is used to connect a magnet located outside the transmission tube to the support column.

[0030] In a preferred embodiment of the present invention, a plurality of connectors are provided on one of the support columns, and the plurality of connectors are distributed at intervals along the extension direction of the support column.

[0031] In a preferred embodiment of the present invention, the upper end portion protrudes from the upper surface of the top of the treatment chamber.

[0032] In a preferred embodiment of the present invention, a plurality of first fixing members are provided on the upper end, extending to the outer periphery of the upper end. The plurality of first fixing members are distributed circumferentially at intervals along the upper end, and the plurality of first fixing members are connected to the upper surface of the top of the treatment room.

[0033] In a preferred embodiment of the present invention, a second fixing member is provided at the lower part of the support column, and the second fixing member is connected to the lower surface of the top of the treatment room.

[0034] This invention provides a neutron capture therapy system, which includes a neutron generation system.

[0035] The neutron generation system includes:

[0036] Accelerators are used to generate beams of charged particles;

[0037] A beam transmission structure used to transmit a beam of charged particles;

[0038] Target material, used to generate a neutron beam by interacting with a beam of charged particles;

[0039] A beam shaper for energy shaping of the neutron beam;

[0040] The neutron capture therapy system further includes a support structure for the aforementioned neutron generation system, the support structure being used at least to partially support the beam transmission structure and / or the beam shaper.

[0041] As described above, the features and advantages of the support structure of the neutron generation system and the neutron capture therapy system of this utility model are as follows: A first support component is set at the top of the treatment chamber, and a support part is provided at the lower part of the first support component. The beam shaping body in the neutron generation system can be supported by the support part, so that the beam shaping body can be installed and supported in the vertical direction; In addition, a second support component is set through the top of the treatment chamber and connected to the top of the treatment chamber. The beam transmission structure in the neutron generation system is supported by the second support component, so that the beam transmission structure can be installed and supported in the vertical direction. This can meet the requirements of vertical beam transmission and energy shaping, obtain a vertically emitted neutron beam that can be used for irradiation therapy, and realize vertical neutron capture therapy. Attached Figure Description

[0042] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0043] Figure 1 : This is a schematic diagram of the support structure of the neutron generation system of this utility model.

[0044] Figure 2 : This is a three-dimensional structural diagram of the first support component in the support structure of the neutron generation system of this utility model.

[0045] Figure 3 : This is a front view schematic diagram of the first support component in the support structure of the neutron generation system of this utility model.

[0046] Figure 4 This is a schematic diagram of the connection structure between the embedded parts and the support frame in the support structure of the neutron generation system of this utility model.

[0047] Figure 5This is a schematic diagram of the connection structure between the support part, the embedded part and the support frame in the support structure of the neutron generation system of this utility model.

[0048] Figure 6 : This is a schematic diagram of the second support component in the support structure of the neutron generation system of this utility model.

[0049] Figure 7 : This is a top view schematic diagram of the installation position of the upper end of the second support component in the support structure of the neutron generation system of this utility model.

[0050] Figure 8 : A bottom view schematic diagram of the installation position of the second fixing member of the second support component in the support structure of the neutron generation system of this utility model.

[0051] Figure 9 : This is a schematic diagram of the upper spatial layout of the XY plane in the neutron capture therapy system of this utility model.

[0052] Figure 10 This is a schematic diagram of the layout of the upper and lower spaces of the YZ plane in the neutron capture therapy system of this invention.

[0053] The reference numerals in the accompanying drawings of this utility model are:

[0054] 1. First support component; 101. Support section;

[0055] 1011. Support leg; 102. Embedded part;

[0056] 1021. Second hole; 103. Support frame;

[0057] 1031. First support rod; 1032. Second support rod;

[0058] 104. Shielding baffle; 105. Shielding space;

[0059] 106. Support arm; 2. Second support assembly;

[0060] 201. Upper end; 2011. First hole;

[0061] 2012, First fastener; 202, Support column;

[0062] 2021, Second fastener; 203, Channel;

[0063] 204. Connector; 205. First reinforcement component;

[0064] 206. Second reinforcement component; 10. Beam transmission structure;

[0065] 1001. Transmission tube; 1002. Magnet;

[0066] 11. First transmission unit; 12. First beam direction switcher;

[0067] 13. Second beam direction switcher; 14. Second transmission unit;

[0068] 15A, Third Transmission Unit; 15B, Fourth Transmission Unit;

[0069] 15C, Fifth Transmission Section; 20, Top Wall;

[0070] 30. Accelerator; 40. Treatment space;

[0071] 40A, Vertical Treatment Room; 40B / 40C, Horizontal Treatment Room;

[0072] 50A / 50B / 50C, Neutron Beam Generation Unit; 60, Beam Transmission Chamber;

[0073] 70. Charged particle beam generation chamber; 80. Beam shaping body;

[0074] L1, lower space; L2, upper space. Detailed Implementation

[0075] Neutron capture therapy has seen increasing application as an effective cancer treatment in recent years, with boron neutron capture therapy being the most common. Neutrons for boron neutron capture therapy can be supplied by nuclear reactors or accelerators. Taking accelerator-based boron neutron capture therapy as an example, the basic components typically include an accelerator for accelerating charged particles (such as protons and deuterons), a target material, a beam transport structure, and a beam shaper. The accelerator accelerates charged particles to react with a metal (lithium) target to produce neutrons. The appropriate nuclear reaction is selected based on factors such as the required neutron yield and energy, the available energy of the accelerated charged particles, the current magnitude, and the physicochemical properties of the metal target, such as 7Li(p,n)7Be and 9Be(p,n)9B. The energy thresholds for the two nuclear reactions are 1.881 MeV and 2.055 MeV, respectively. Since the ideal neutron source for boron neutron capture therapy is hyperthermal neutrons with energies in the keV range, theoretically, if protons with energies only slightly higher than the threshold are used to bombard a lithium metal target, relatively low-energy neutrons can be produced, which can be used clinically without much slowing down. However, the interaction cross-section between lithium metal (Li) and beryllium metal (Be) targets and protons with the threshold energy is not high. In order to generate a sufficiently large neutron flux, higher-energy protons are usually selected to initiate the nuclear reaction.

[0076] In boron neutron capture therapy, beam shaping (BSA) is primarily used to improve the flux and quality of the neutron source. Regardless of whether the neutron source in boron neutron capture therapy originates from a nuclear reactor or accelerator where charged particles react with the target material, the resulting radiation field is a mixed field, meaning the beam contains neutrons and photons ranging from low to high energy. For boron neutron capture therapy of deep tumors, the higher the content of radiation other than hyperthermic neutrons, the greater the proportion of non-selective dose deposition in normal tissues. Therefore, these unnecessary radiation doses should be minimized. Common beam shaping devices include moderators (or decelerators), reflectors, thermal neutron absorbers, and radiation shields.

[0077] The beam transport structure in neutron capture therapy includes components such as a transport tube and magnets. The transport tube is used to transport the charged particle beam. The charged particle beam accelerated by the accelerator is transported to the metal target through the transport tube. The charged particles interact with the metal target to produce neutrons. The magnets include, but are not limited to, beam focusing magnets and deflection magnets used to switch the direction of beam transport.

[0078] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0079] Implementation Method 1

[0080] like Figures 1 to 5 As shown, this utility model provides a support structure for a neutron generation system, which is used to support the neutron generation system. The neutron generation system includes a beam transmission structure 10 and a beam shaper 80. The support structure of the neutron generation system includes a first support component 1, which is connected to the top wall 20 of the treatment room. In this embodiment, the top of the treatment room is the top wall 20 of the treatment room. A support part 101 is provided at the lower part of the first support component 1. The beam shaper 80 can be supported and fixed by the support part 101, and the beam outlet of the beam shaper 80 is made to face downward, so as to realize vertical neutron irradiation.

[0081] In one optional embodiment of this utility model, such as Figure 1 , Figures 6 to 8 As shown, the support structure of the neutron generation system also includes a second support component 2. Most of the second support component 2 is located above the first support component 1 and penetrates the top wall 20 of the treatment room. The second support component 2 is used to support and fix the beam transmission structure 10 that passes through the top wall 20 of the treatment room, thereby ensuring that the beam transmission structure 10 can stably and smoothly pass through the top wall 20 of the treatment room and enter the treatment room.

[0082] In this invention, a first support component 1 is installed on the top wall 20 of the treatment chamber. A support part 101 is provided at the lower part of the first support component 1, which can support the beam shaper 80 in the neutron generation system, thereby allowing the beam shaper 80 to be fixedly installed in the vertical direction. In addition, a second support component 2 is provided above the first support component 1, penetrating through the top wall 20 of the treatment chamber and connected to the top wall 20 of the treatment chamber. The second support component 2 can support part of the beam transmission structure 10 in the neutron generation system, thereby allowing the beam transmission structure 10 to be fixedly installed in the vertical direction. This satisfies the requirements for vertical transmission of charged particle beams and energy shaping of neutron beams, obtaining a vertically emitted neutron beam that can be used for irradiation therapy, and realizing vertical neutron capture therapy.

[0083] In one optional embodiment of this utility model, such as Figure 1 , Figures 6 to 8 As shown, the second support component 2 includes an upper end 201 and multiple vertically arranged pillars 202. The upper end 201 has a first hole 2011 in the middle. The multiple pillars 202 are evenly distributed around the upper end 201 and spaced apart from it. The upper part of each pillar 202 is connected to the bottom surface of the upper end 201. The multiple pillars 202 penetrate the top wall 20 of the treatment room vertically. A channel 203 is formed between the first hole 2011 of the upper end 201 and the multiple pillars 202, which allows the beam transmission structure 10 to pass through the top wall 20 of the treatment room.

[0084] Specifically, such as Figure 1 , Figures 6 to 8 As shown, the upper end 201 has a ring-shaped structure, and the hollow area of ​​the upper end 201 is the first hole 2011. The upper part of the support column 202 and the upper end 201 can be integrally formed to improve the strength of the second support component 2 and ensure that it has a stable support capacity, thereby providing stable support for the beam transmission structure 10.

[0085] In one optional embodiment of this utility model, such as Figure 6 As shown, at least one support column 202 is provided with a connector 204. The connector 204 is used to connect the magnet 1002 located outside the transmission tube 1001 to the support column 202, thereby fixing the beam transmission structure 10. The connector 204 can be a connecting plate, with one end fixedly connected to the magnet 1002 and the other end fixedly connected to the support column 202, thereby fixing the beam transmission structure 10. The connecting plate and the support column 202 can be integrally formed, or the connecting plate and the support column 202 can be fixed by welding or bolts; the connecting plate and the magnet 1002 can be fixed by bolts.

[0086] Specifically, such as Figure 6 As shown, each support column 202 may be provided with, but is not limited to, three plate-shaped connectors 204. The three connectors 204 are spaced apart along the extension direction of the support column 202, thereby cooperating to fix the beam transmission structure 10. Of course, the number and arrangement of the connectors 204 can be adjusted according to the number and position of the magnets 1002 on the transmission tube 1001 to ensure a stable connection between the beam transmission structure 10 and the second support assembly 2.

[0087] In one optional embodiment of this utility model, such as Figure 7 As shown, the upper end 201 of the second support component 2 protrudes from the upper surface of the top wall 20 of the treatment room, which not only improves the stability of the connection between the second support component 2 and the top wall 20 of the treatment room, but also facilitates the disassembly, assembly and maintenance of the second support component 2.

[0088] Furthermore, such as Figure 6 , Figure 7 As shown, the upper end portion 201 is provided with a plurality of elongated first fasteners 2012 extending outward from the outer periphery of the upper end portion 201. The plurality of first fasteners 2012 are distributed at intervals along the circumference of the upper end portion 201, and are fixedly connected to or abut against the upper surface of the top wall 20 of the treatment room. Since the first fasteners 2012 are relatively thin, to further improve the stability of the connection between the first fasteners 2012 and the top wall 20 of the treatment room, a first reinforcement 205 adapted to the shape of the upper end portion 201 and the first fasteners 2012 can be provided at the top of the upper end portion 201. The top surface of the upper end portion 201 and the top surface of the first fasteners 2012 are respectively connected to the bottom of the first reinforcement 205 to enhance the strength of the upper end portion 201 and the first fasteners 2012. The upper end portion 201 and the first fasteners 2012 may be integrally formed, but are not limited to this.

[0089] In one optional embodiment of this utility model, such as Figure 6 , Figure 8As shown, a long, plate-shaped second fastener 2021 extending away from the support column 202 is provided at the lower part of the support column 202. The second fastener 2021 is fixedly connected to or abuts against the lower surface of the top wall 20 of the treatment room. To improve the stability of the connection between the second fastener 2021 and the top wall 20 of the treatment room, a second reinforcement member 206 can be provided at the bottom of the second fastener 2021 to support multiple second fasteners 2021. The second reinforcement member 206 supports the bottom of multiple second fasteners 2021 and can be fixedly connected to the lower surface of the top wall 20 of the treatment room by multiple screws, thereby improving the load-bearing capacity of the second fasteners 2021 and the stability of the connection with the top wall 20 of the treatment room. The support column 202 and the second fastener 2021 can be, but are not limited to, integrally formed.

[0090] In another optional embodiment, the second fastener 2021 is a right-angled plate. After the support column 202 passes through the top wall 20 of the treatment room, one right-angled side of the second fastener 2021 is connected to the bottom of the support column 202, and the other right-angled side of the second fastener 2021 is connected to the top wall 20. In this embodiment, the second fastener 2021 and the support column 202 are detachably connected, which improves the stability of the connection between the second support assembly 2 and the top wall 20, and facilitates the removal of the second support assembly 2 (except for the part of the second fastener 2021) from the top wall 20.

[0091] In one optional embodiment of this utility model, such as Figures 1 to 5 As shown, the first support component 1 includes an embedded part 102 and a support frame 103. The embedded part 102 is disposed within the top wall 20 of the treatment room. The upper part of the support frame 103 is connected to the bottom of the embedded part 102, and the support part 101 is disposed at the lower part of the support frame 103. In actual installation, the embedded part 102 is embedded within the top wall 20 of the treatment room to ensure the load-bearing capacity of the first support component 1. Of course, in other optional embodiments, the embedded part 102 can also be disposed on the upper surface of the top wall 20, which is readily apparent to those skilled in the art and will not be elaborated upon here.

[0092] Furthermore, such as Figures 1 to 3 As shown, the first support assembly 1 also includes a shielding baffle 104, which is disposed on the side of the first support assembly 1. The edge of at least one side of the shielding baffle 104 can be pivotally connected to the support frame 103, so that the shielding baffle 104 is in an openable and closable form. When each shielding baffle 104 is closed, the support frame 103 will be surrounded within the space formed by each shielding baffle 104. That is, the multiple first support rods 1031 and multiple second support rods 1032 that make up the support frame 103 are all located within the shielding space 105, thereby better performing radiation shielding.

[0093] The shielding baffle 104 can be made of materials containing boron or lead, such as boron-containing PE or metallic lead.

[0094] Specifically, such as Figures 1 to 5 As shown, the embedded part 102 has a second hole 1021 in the middle for the beam transmission structure 10 to pass through; the support frame 103 includes multiple first support rods 1031 arranged in the vertical direction and multiple second support rods 1032 arranged in the horizontal direction. The multiple first support rods 1031 are distributed at intervals along the circumference of the embedded part 102 below the embedded part 102. The top of the multiple first support rods 1031 is connected to the bottom of the embedded part 102, and the multiple second support rods 1032 are connected to the bottom ends of two adjacent first support rods 1031. The support part 101 is connected to the multiple second support rods 1032.

[0095] Specifically, the embedded part 102 is a rectangular ring structure, and the hollow area in the middle of the embedded part 102 is the second hole 1021. There are four first support rods 1031, which are located at the four corners of the embedded part 102 and are fixed to the embedded part 102 with bolts, specifically chemical bolts. The four second support rods 1032 are connected to the bottom ends of the two adjacent first support rods 1031 to form a rectangular frame structure.

[0096] Furthermore, such as Figure 1 , Figure 3 , Figure 5 As shown, the support portion 101 includes multiple support legs 1011, each of which is connected to the second support rod 1032. One side of each support leg 1011 is welded or bolted to the outer frame of the beam shaper 80, and the other side is bolted to the first support rod 1031. Of course, other connection methods can also be used in other optional embodiments, which are readily apparent to those skilled in the art and will not be elaborated upon here.

[0097] In this invention, the beam transmission structure 10 passes through the top wall 20 of the treatment room, and the beam shaping body 80 is positioned below the beam transmission structure 10 via a first support assembly 1. The central axis of the beam shaping body coincides with the central axis of the vertically arranged transmission tube 1001 in the beam transmission structure 10. The first support assembly 1 provides vertical support for the beam shaping body 80, facilitates docking between the beam shaping body 80 and the beam transmission structure 10, and also ensures the operability of subsequent treatment at the beam outlet end of the beam shaping body.

[0098] In one optional embodiment of this utility model, such as Figures 1 to 3As shown, at least one first support rod 1031 is provided with a support arm 106. The support arm 106 is used to connect the first support rod 1031 with the transmission tube 1001 in the beam transmission structure 10, thereby providing support and fixing for the transmission tube 1001 in the beam transmission structure 10.

[0099] Furthermore, the support arm 106 includes multiple connecting segments, with adjacent connecting segments rotatably connected. The support arm 106 can rotate in the horizontal direction, and when the transmission tube 1001 is disassembled and detached from the beam transmission structure 10, the transmission tube 1001 can be moved horizontally. In addition, if necessary, the support arm 106 can be configured to move up and down along the first support rod 1031.

[0100] In an optional embodiment of this invention, neutron shielding material is filled between the outer frame of the beam shaper 80 and the second support rod 1032 to achieve the effect of shielding radiation and preventing neutrons from escaping from the gap between the outer frame of the beam shaper 80 and the second support rod 1032, thereby increasing the risk of neutron radiation in the environment and non-treatment areas. The neutron shielding material can be sufficient to shield the neutron beam; the specific material used is not limited here.

[0101] The features and advantages of the support structure of the neutron generation system of this invention are as follows:

[0102] The support structure of the neutron generation system has a first support component 1 installed on the top wall 20 of the treatment chamber. The bottom of the first support component 1 is provided with a support part 101, which can support the beam shaper 80 in the neutron generation system, thereby fixing the beam shaper 80 in the vertical direction. In addition, a second support component 2 is provided through the top wall 20 of the treatment chamber, which supports the beam transmission structure 10 in the neutron generation system, thereby installing and supporting the beam transmission structure 10 in the vertical direction. This can meet the requirements of vertical beam transmission and energy shaping, obtain a vertically emitted neutron beam that can be used for irradiation therapy, and realize vertical neutron capture therapy.

[0103] Implementation Method 2

[0104] like Figures 6 to 8 As shown, this utility model provides a support structure for a neutron generation system. The neutron generation system includes a beam transmission structure 10 and a beam shaper 80. The support structure includes a second support component 2, which penetrates the top wall 20 of the treatment room and is fixedly connected to the top wall 20 of the treatment room. The second support component 2 is used to at least partially support the beam transmission structure 10, thereby ensuring that the beam transmission structure 10 can stably and smoothly pass through the top wall 20 of the treatment room and enter the treatment room.

[0105] In one optional embodiment of this utility model, such as Figures 6 to 8 As shown, the second support component 2 includes an upper end 201 and multiple vertically arranged pillars 202. The upper end 201 has a first hole 2011 in the middle. The multiple pillars 202 are evenly distributed around the upper end 201 and spaced apart from it. The upper part of each pillar 202 is connected to the bottom surface of the upper end 201. The multiple pillars 202 penetrate the top wall 20 of the treatment room vertically. A channel 203 is formed between the first hole 2011 of the upper end 201 and the multiple pillars 202, which allows the beam transmission structure 10 to pass through the top wall 20 of the treatment room.

[0106] Specifically, such as Figures 6 to 8 As shown, the upper end 201 has a ring-shaped structure, and the hollow area of ​​the upper end 201 is the first hole 2011. The top of the support column 202 and the upper end 201 can be integrally formed to improve the strength of the second support component 2 and ensure that it has a stable support capability, thereby providing stable support for the beam transmission structure 10.

[0107] In one optional embodiment of this utility model, such as Figure 6 As shown, at least one support column 202 is provided with a connector 204. The connector 204 is used to connect the magnet 1002 located outside the transmission tube 1001 to the support column 202, thereby fixing the beam transmission structure 10. The connector 204 can be a connecting plate, with one end fixedly connected to the magnet 1002 and the other end fixedly connected to the support column 202, thereby fixing the beam transmission structure 10. The connecting plate and the support column 202 can be integrally formed, or the connecting plate and the support column 202 can be fixed by welding or bolts; the connecting plate and the magnet 1002 can be fixed by bolts.

[0108] Specifically, such as Figure 6 As shown, each support column 202 may be provided with, but is not limited to, three plate-shaped connectors 204. The three connectors 204 are spaced apart along the extension direction of the support column 202, thereby cooperating to fix the beam transmission structure 10. Of course, the number and arrangement of the connectors 204 can be adjusted according to the number and position of the magnets 1002 on the transmission tube 1001 to ensure a stable connection between the beam transmission structure 10 and the second support assembly 2.

[0109] In one optional embodiment of this utility model, such as Figure 7 As shown, the upper end 201 of the second support component 2 is exposed on the upper surface of the top wall 20 of the treatment room. A part of the upper end 201 is in contact with the top wall 20 of the treatment room, which not only improves the stability of the connection between the second support component 2 and the top wall 20 of the treatment room, but also facilitates the disassembly, assembly and maintenance of the second support component 2.

[0110] Furthermore, such as Figure 6 , Figure 7 As shown, the upper end portion 201 is provided with a plurality of elongated first fasteners 2012 extending outward from the outer periphery of the upper end portion 201. The plurality of first fasteners 2012 are distributed at intervals along the circumference of the upper end portion 201, and are fixedly connected to or abut against the upper surface of the top wall 20 of the treatment room. Since the first fasteners 2012 are relatively thin, to improve the stability of the connection between the first fasteners 2012 and the top wall 20 of the treatment room, a first reinforcement 205 adapted to the shape of the upper end portion 201 and the first fasteners 2012 can be provided at the top of the upper end portion 201. The top surface of the upper end portion 201 and the top surface of the first fasteners 2012 are respectively connected to the bottom of the first reinforcement 205 to enhance the strength of the upper end portion 201 and the first fasteners 2012. The upper end portion 201 and the first fasteners 2012 may be integrally formed, but are not limited to this.

[0111] In one optional embodiment of this utility model, such as Figure 6 , Figure 8 As shown, a second fastener 2021, extending in a long plate shape away from the support column 202, is provided at the lower part of the support column 202. The second fastener 2021 is fixedly connected to or abuts against the lower surface of the top wall 20 of the treatment room. To improve the stability of the connection between the second fastener 2021 and the top wall 20 of the treatment room, a second reinforcement member 206 can be provided at the bottom of the second fastener 2021 to support multiple second fasteners 2021. The second reinforcement member 206 supports the bottom of multiple second fasteners 2021 and can be fixedly connected to the lower surface of the top wall 20 of the treatment room by multiple screws, thereby improving the load-bearing capacity of the second fasteners 2021 and the stability of the connection with the top wall 20 of the treatment room. The support column 202 and the second fastener 2021 can be, but are not limited to, integrally formed.

[0112] In another optional embodiment, the second fastener 2021 is a right-angled plate. After the support column 202 passes through the top wall 20 of the treatment room, one right-angled side of the second fastener 2021 is connected to the bottom of the support column 202, and the other right-angled side of the second fastener 2021 is connected to the top wall 20. In this embodiment, the second fastener 2021 and the support column 202 are detachably connected, which improves the stability of the connection between the second support assembly 2 and the top wall 20, and facilitates the removal of the second support assembly 2 (except for the part of the second fastener 2021) from the top wall 20.

[0113] The features and advantages of the support structure of the neutron generation system of this invention are as follows:

[0114] The supporting structure of the neutron generation system includes a second support component 2 that penetrates the top wall 20 of the treatment chamber and is connected to the top wall 20 of the treatment chamber. The beam transmission structure 10 in the neutron generation system can be supported by the second support component 2, thereby allowing the beam transmission structure 10 to be fixedly installed in the vertical direction, meeting the requirements for vertical transmission of charged particle beams, and realizing vertical neutron capture therapy.

[0115] Implementation Method 3

[0116] like Figures 1 to 5 As shown, this utility model provides a support structure for a neutron generation system, which is used to support the neutron generation system. The neutron generation system includes a beam transmission structure 10 and a beam shaper 80. The support structure of the neutron generation system includes a first support component 1, which is connected to the top wall 20 of the treatment room. A support part 101 is provided at the lower part of the first support component 1. The support part 101 can support and fix the beam shaper 8080 and make the beam outlet of the beam shaper 8080 face downward, so as to realize vertical neutron irradiation.

[0117] In one optional embodiment of this utility model, such as Figures 1 to 5 As shown, the first support component 1 includes an embedded part 102 and a support frame 103. The embedded part 102 is disposed within the top wall 20 of the treatment room. The upper part of the support frame 103 is connected to the bottom of the embedded part 102, and the support part 101 is disposed at the lower part of the support frame 103. In actual installation, the embedded part 102 is embedded within the top wall 20 of the treatment room to ensure the load-bearing capacity of the first support component 1. Of course, in other optional embodiments, the embedded part 102 can also be disposed on the upper surface of the top wall 20, which is readily apparent to those skilled in the art and will not be elaborated upon here.

[0118] Furthermore, such as Figures 1 to 3 As shown, the first support assembly 1 also includes a shielding baffle 104 disposed on the side of the first support assembly 1. The edge of at least one side of the shielding baffle 104 can be pivotally connected to the support frame 103, so that the shielding baffle 104 is in an openable and closable form. When each shielding baffle 104 is closed, the support frame 103 will be surrounded within the space formed by each shielding baffle 104. That is, the multiple first support rods 1031 and multiple second support rods 1032 that make up the support frame 103 are all located within the shielding space 105, thereby better performing radiation shielding.

[0119] The shielding baffle 104 can be made of materials containing boron or lead, such as boron-containing PE or metallic lead.

[0120] Specifically, such as Figures 1 to 5As shown, the embedded part 102 has a second hole 1021 in the middle for the beam transmission structure 10 to pass through; the support frame 103 includes multiple first support rods 1031 arranged in the vertical direction and multiple second support rods 1032 arranged in the horizontal direction. The multiple first support rods 1031 are distributed at intervals along the circumference of the embedded part 102 below the embedded part 102. The top of the multiple first support rods 1031 is connected to the bottom of the embedded part 102, and the multiple second support rods 1032 are connected to the bottom ends of two adjacent first support rods 1031. The support part 101 is connected to the multiple second support rods 1032.

[0121] Specifically, the embedded part 102 is a rectangular ring structure, and the hollow area in the middle of the embedded part 102 is the second hole 1021. There are four first support rods 1031, which are located at the four corners of the embedded part 102 and are fixed to the embedded part 102 with bolts, specifically chemical bolts. The four second support rods 1032 are connected to the bottom ends of the two adjacent first support rods 1031 to form a rectangular frame structure.

[0122] Furthermore, such as Figure 1 , Figure 3 , Figure 5 As shown, the support part 101 includes multiple support feet 1011, which are respectively connected to the beam shaper 8080 and multiple second support rods 1032. One side of each support foot 1011 is welded and fixed to the outer frame of the beam shaper 80, and the other side of each support foot 1011 is fixedly connected to the first support rod 1031 via bolts.

[0123] In this invention, the beam transmission structure 10 passes through the top wall 20 of the treatment area, and the beam shaping body 80 is positioned below the beam transmission structure 10 via a first support assembly 1. The central axis of the beam shaping body coincides with the central axis of the vertically arranged transmission tube 1001 in the beam transmission structure 10. The first support assembly 1 provides vertical support for the beam shaping body 80, facilitates docking between the beam shaping body 80 and the beam transmission structure 10, and ensures the operability of subsequent treatment at the beam outlet end of the beam shaping body 80.

[0124] In one optional embodiment of this utility model, such as Figures 1 to 3 As shown, at least one first support rod 1031 is provided with a support arm 106. The support arm 106 is used to connect the first support rod 1031 with the transmission tube 1001 in the beam transmission structure 10, thereby providing support and fixing for the transmission tube 1001 in the beam transmission structure 10.

[0125] Furthermore, the support arm 106 includes multiple connecting segments, with adjacent connecting segments rotatably connected. The support arm 106 can rotate in the horizontal direction, and when the transmission tube 1001 is disassembled and detached from the beam transmission structure 10, the transmission tube 1001 can be moved horizontally. In addition, if necessary, the support arm 106 can be configured to move up and down along the first support rod 1031.

[0126] In an optional embodiment of this invention, neutron shielding material is filled between the outer frame of the beam shaper 80 and the second support rod 1032 to achieve the effect of shielding radiation and preventing neutrons from escaping from the gap between the outer frame of the beam shaper 80 and the second support rod 1032, thereby increasing the risk of neutron radiation in the environment and non-treatment areas. The neutron shielding material can be sufficient to shield the neutron beam; the specific material used is not limited here.

[0127] The features and advantages of the support structure of the neutron generation system of this invention are as follows:

[0128] In the support structure of this neutron generation system, the beam shaper 80 in the neutron generation system can be supported and fixed by the support part 101 in the first support component 1. This allows for the fixed installation of the beam shaper 80 in the vertical direction, meeting the requirement of energy shaping of the neutron beam in the vertical direction and obtaining a vertically emitted neutron beam suitable for irradiation therapy. By reasonably designing the length of the first support rod 1031, the beam shaper 80 can be fixed at a suitable height, facilitating patient positioning below the beam exit and achieving vertical neutron capture therapy.

[0129] Implementation Method 4

[0130] This invention provides a neutron capture therapy system, which includes a neutron generation system. The neutron generation system includes: an accelerator 30 for generating a charged particle beam; a beam transmission structure 10 for transmitting the charged particle beam; a target for interacting with the charged particle beam to generate a neutron beam; and a beam shaper 80 for shaping the energy of the neutron beam. The neutron capture therapy system also includes a support structure for the aforementioned neutron generation system, the support structure at least partially supporting the beam transmission structure 10 and / or the beam shaper 80.

[0131] The neutron capture therapy system of this invention is configured within two layers of space (upper space L2 and lower space L1). The system also includes treatment spaces 40 (40A, 40B, 40C) and a charged particle beam generation chamber 70. The charged particle beam generation chamber 70 houses an accelerator 30 and at least a portion of the beam transmission structure 10. The treatment spaces 40 include two horizontal treatment chambers 40B and 40C located in the upper space L2 and a vertical treatment chamber 40A located in the lower space L1. A patient support platform, specifically a treatment table, is provided within each treatment space. Patients undergo neutron beam irradiation treatment within the treatment spaces 40 (40A, 40B, 40C). There can be one or more neutron beam generation units to generate one or more therapeutic neutron beams. The beam transmission structure 10 can selectively transmit charged particle beams to one or more neutron beam generation units or simultaneously to multiple neutron beam generation units. Each neutron beam generation unit corresponds to one treatment space 40. The neutron beam generating unit includes a target material for interacting with a charged particle beam to generate a neutron beam and a beam shaper for energy shaping the neutron beam. Figure 9 , Figure 10 In the embodiment shown, there are three neutron beam generating units and three treatment spaces 40, namely three neutron beam generating units 50A, 50B, and 50C, two horizontal treatment rooms 40B and 40C, and one vertical treatment room 40A.

[0132] The main body of the beam transmission structure 10 is located inside the beam transmission chamber 60. The beam transmission structure 10 includes: a first transmission section 11, which is connected to the accelerator 30; a first beam direction switcher 12 and a second beam direction switcher 13, used to switch the direction of travel of the charged particle beam; a second transmission section 14 connected to the first beam direction switcher 12 and the second beam direction switcher 13; and third, fourth, and fifth transmission sections 15A, 15B, and 15C, which respectively transmit the charged particle beam from the first beam direction switcher 12 or the second beam direction switcher 13 to the neutron beam generation sections 50A, 50B, and 50C. The generated neutron beams then irradiate the patients in the horizontal treatment chambers 40B and 40C and the vertical treatment chamber 40A, respectively. The third transmission section 15A connects to the first beam direction switcher 12 and the neutron beam generating section 50A; the fourth transmission section 15B connects to the second beam direction switcher 13 and the neutron beam generating section 50B; and the fifth transmission section 15C connects to the second beam direction switcher 13 and the neutron beam generating section 50C. That is, the first transmission section 11 branches into the second transmission section 14 and the third transmission section 15A in the first beam direction switcher 12, and the second transmission section 14 further branches into the fourth transmission section 15B and the fifth transmission section 15C in the second beam direction switcher 13. The first and second transmission units 11 and 14 transmit along the X-axis, the third transmission unit 15A transmits along the Z-axis, and the fourth and fifth transmission units 15B and 15C transmit in the XY plane, forming a "Y" shape with the transmission directions of the first and second transmission units 11 and 14. Neutron beam generating units 50A, 50B, and 50C, along with corresponding horizontal treatment chambers 40B and 40C and a vertical treatment chamber 40A, are respectively positioned along the transmission directions of the third, fourth, and fifth transmission units 15A, 15B, and 15C. The generated neutron beam directions are the same as those of the third, fourth, and fifth transmission units 15A, 15B, and 15C, respectively. Therefore, the neutron beam directions generated by neutron beam generating units 50B and 50C are in the same plane, while the neutron beam direction generated by neutron beam generating unit 50A is perpendicular to this plane. This arrangement effectively utilizes space, allows for simultaneous treatment of multiple patients, avoids excessively long beam transmission lines, and minimizes losses. The first to fifth transmission sections include a transmission tube and a focusing magnet disposed outside the transmission tube. The first beam direction switcher 12 and the second beam direction switcher 13 can be deflecting magnets.

[0133] In the structure of the aforementioned neutron capture therapy system, the neutron beams in the horizontal treatment chambers 40B and 40C are horizontal beams, and the axes of the corresponding neutron beam generating units 50B and 50C are horizontal axes. In the horizontal treatment chambers 40B and 40C, the neutron beam generating units 50B and 50C can be embedded in the wall for installation, using the existing walls of the building to support and shield them. However, the neutron beam in the vertical treatment chamber 40A is a vertical beam flowing from top to bottom, and the axis of the corresponding neutron beam generating unit 50A is a vertical axis. If the neutron beam generating unit 50A is installed in the wall in the same way as in the horizontal treatment chamber 40B, that is, in the top wall (i.e., ceiling) of the vertical treatment chamber 40A, the beam outlet of the neutron beam generating unit 50A is far from the ground. When treating the patient, the patient needs to be lifted to a position close to the ceiling. This method is not only difficult to operate, but also poses certain safety hazards. To move the beam outlet closer to the ground, the neutron beam generating unit 50A needs to be simultaneously suspended from the top wall of the vertical treatment chamber 40A. Due to the large weight of the beam shaping unit 80 and the high precision requirements for installation, how to install and fix the neutron beam generating unit 50A in the vertical direction is a pressing issue. Furthermore, the third transmission unit 15A, which connects to the neutron beam generating unit 50A in the vertical direction, needs to pass vertically through the top wall of the vertical treatment chamber 40A; currently, there are no structural components to support and install the third transmission unit 15A in the vertical direction.

[0134] Therefore, the neutron capture therapy system of this embodiment further includes a second support assembly 2 for supporting the third transmission section 15A in the vertical direction, and / or a first support assembly 1 for supporting the neutron beam generating section 50A of the vertical treatment chamber. The neutron beam generating section includes a beam shaper and a target material. The target material is usually embedded in the beam shaper. In this embodiment, supporting the neutron beam generating section is achieved by supporting the beam shaper. The specific structure of the first support assembly 1 is described in Embodiment 3, and the specific structure of the second support assembly 2 is described in Embodiment 2, and will not be repeated here.

[0135] The above description is merely an illustrative embodiment of this utility model and is not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A support structure for a neutron generation system, used to support the neutron generation system, the neutron generation system comprising a beam transmission structure and a beam shaper, characterized in that, The support structure of the neutron generation system includes a first support component connected to the top of the treatment chamber, and the first support component is used to at least partially support the beam shaping body.

2. The support structure of the neutron generation system as described in claim 1, characterized in that, The support structure of the neutron generation system also includes a second support component that extends through the top of the treatment chamber and is used to at least partially support the beam transmission structure.

3. The support structure of the neutron generation system as described in claim 2, characterized in that, The second support component includes an upper end and multiple vertically arranged pillars. A first hole is provided in the middle of the upper end. The multiple pillars are distributed circumferentially below the upper end and the upper parts of the multiple pillars are respectively connected to the bottom surface of the upper end. The multiple pillars penetrate the top of the treatment chamber vertically. A channel penetrating the top of the treatment chamber is formed between the first hole in the upper end and the multiple pillars. The channel is used for the beam transmission structure to pass through.

4. The support structure of the neutron generation system as described in claim 1, characterized in that, The first support assembly includes an embedded part and a support frame. The embedded part is connected to the upper part of the support frame and is at least partially disposed in the top of the treatment room. The lower part of the support frame is provided with a support portion, which is used to at least partially support the beam shaping body.

5. The support structure of the neutron generation system as described in claim 4, characterized in that, The first support component further includes a shielding baffle, which is disposed on the side of the first support component.

6. The support structure of the neutron generation system as described in claim 4, characterized in that, The embedded part has a second hole in the middle for the beam transmission structure to pass through; The support frame includes multiple first support rods arranged vertically and multiple second support rods arranged horizontally. The multiple first support rods are distributed at intervals around the embedded part below the embedded part. The upper parts of the multiple first support rods are connected to the embedded part, and the multiple second support rods are connected to the lower parts of two adjacent first support rods. The support part is connected to the second support rods.

7. The support structure of the neutron generation system as described in claim 6, characterized in that, The support includes multiple support legs, which are connected to multiple second support rods.

8. The support structure of the neutron generation system as described in claim 6, characterized in that, At least one of the first support rods is provided with a support arm, which is used to connect the first support rod to the beam transmission structure.

9. The support structure of the neutron generation system as described in claim 8, characterized in that, The support arm includes multiple connecting segments, and adjacent connecting segments are rotatably connected.

10. The support structure of the neutron generation system as described in claim 6, characterized in that, The first support assembly further includes a shielding baffle, at least one side of which is openable and closable. When the shielding baffle is closed, multiple first support rods and multiple second support rods are located within the shielding space formed by the closed shielding baffle.

11. A neutron capture therapy system, characterized in that, The neutron capture therapy system includes a neutron generation system. The neutron generation system includes: Accelerators are used to generate beams of charged particles; A beam transmission structure used to transmit a beam of charged particles; Target material, used to generate a neutron beam by interacting with a beam of charged particles; A beam shaper for energy shaping of the neutron beam; The neutron capture therapy system further includes a support structure for the neutron generation system according to any one of claims 1 to 10, the support structure being at least partially supporting the beam transmission structure and / or the beam shaper.

Images