Gantry for radiotherapy device and radiotherapy device

Abstract

Provided is a gantry for a radiotherapy device, comprising: a supporting assembly; a cylindrical roller configured as a horizontal structure with a first end and a second end in an axial direction, wherein the first end and the second end are both rotatably arranged on the supporting assembly; and a carrier arranged on an outer wall of the first end and adapted to carry an external pulse transformer, such that the pulse transformer rotates synchronously with the cylindrical roller. The cylindrical roller is adapted to provide a reliable mounting platform for the ultra-high dose rate radiotherapy device, such that particle rays output by a plurality of beam modules arranged in the ultra-high dose rate radiotherapy device can accurately converge in the cylindrical roller. Both the first end and the second end of the cylindrical roller are rotatably arranged on the supporting assembly, so as to meet the bearing capacity requirements of the cylindrical roller and other arranged components, thereby forming a reliable mounting platform for the gantry for the radiotherapy device. The carrier is used to assemble the pulse transformer on the cylindrical roller and moves synchronously with the cylindrical roller, thus allowing the alignment and connection to other components of the ultra-high dose rate radiotherapy device.

Description

Radiotherapy gantry and radiotherapy equipment

[0001] This application claims priority to Chinese patent application No. 202510072478.3, filed on January 16, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of radiotherapy technology, and more particularly to a gantry for radiotherapy equipment and a radiotherapy device. Background Technology

[0003] Cancer treatment is an important topic in modern medical research. Among them, radiotherapy is a method that uses ionizing radiation to damage the DNA of cancer cells, thereby inhibiting or killing cancer cells and achieving the goal of treating tumors.

[0004] Ultra-high dose rate radiotherapy, also known as flash radiotherapy (Flash-RT), is an emerging radiotherapy technique characterized by its ability to compress irradiation time to the millisecond level to deliver high-dose radiation to tumors, reaching doses of 40 Gy / s and above, thereby achieving unique biological effects. This allows for the reduction of damage to normal tissues while maintaining the killing effect on tumor cells.

[0005] Ultra-high dose rate radiotherapy equipment includes a gantry and other components mounted on it. Currently, radiotherapy gantry systems typically consist of rollers and support assemblies, with one axial end of the roller rotatably mounted on the support assemblies to form a cantilever structure. However, this structure has low load-bearing capacity, making it difficult to meet the load-bearing requirements of ultra-high dose rate radiotherapy equipment. Summary of the Invention

[0006] To address at least one of the above-mentioned and other technical problems in the prior art, embodiments of this disclosure provide a frame for a radiotherapy device, suitable as an installation base for an ultra-high dose rate radiotherapy device, wherein the first and second ends of the roller are rotatably mounted on a support assembly to meet the load-bearing capacity requirements of the roller.

[0007] Embodiments of this disclosure provide a gantry for a radiotherapy device, comprising: a support assembly; a roller configured in a horizontal structure having an axial first end and a second end, the first end and the second end being rotatably disposed on the support assembly; and a carrier frame disposed on the outer wall of the first end, suitable for carrying an external pulse transformer so that the pulse transformer rotates synchronously with the roller.

[0008] According to an embodiment of this disclosure, the roller is also suitable for mounting an external beam assembly and a power distribution assembly, so that the beam assembly and the power distribution assembly rotate synchronously with the roller; wherein the beam assembly is disposed on the outer side of the second end, and the power distribution assembly is disposed on the outer wall of the portion of the roller located between the first end and the second end.

[0009] According to embodiments of this disclosure, the gantry for radiotherapy equipment further includes an adjustment component disposed between the support frame and the pulse transformer, which is adapted to adjust the position of the pulse transformer relative to the power distribution component and to hold the pulse transformer in the assembled position.

[0010] According to an embodiment of the present disclosure, the support frame includes: a mounting portion disposed on the outer wall of the roller and extending radially outward along the roller; and a support portion disposed at the end of the mounting portion away from the roller and forming a first mounting surface parallel to the axis of the roller.

[0011] According to an embodiment of this disclosure, the adjustment component is disposed on the bearing portion and is adapted to cause the pulse transformer to translate in a direction parallel to the first mounting surface and / or move closer to or away from the roller in a direction orthogonal to the first mounting surface.

[0012] According to an embodiment of this disclosure, the adjustment assembly includes: a movable plate slidably disposed on the first mounting surface and adapted to translate along a first direction or a second direction; and a lifting member disposed on the movable plate and abutting against the first mounting surface, adapted to adjust the distance between the movable plate and the first mounting surface along a third direction; wherein the pulse transformer is mounted on the movable plate to move synchronously with the movable plate.

[0013] According to an embodiment of this disclosure, the adjustment assembly further includes a limiting member adapted to limit the displacement of the moving plate along the first direction and the second direction, so as to keep the pulse transformer in the assembly position.

[0014] According to an embodiment of this disclosure, the gantry for radiotherapy equipment further includes a mounting plate disposed on the outer wall of the second end of the roller and extending outward along the radial direction of the roller; the beam assembly is disposed on the mounting plate.

[0015] According to an embodiment of this disclosure, the gantry for radiotherapy equipment includes a first mounting plate disposed on a first side of the second end; and a second mounting plate disposed on a second side of the second end opposite to the first side; the beam assembly includes a plurality of beam modules, a portion of which are disposed on the first mounting plate and another portion of which are disposed on the second mounting plate; wherein the output ends of the beam modules are all disposed facing the axis of the roller, so that the particle beams output by each beam module converge at a point on the axis of the roller.

[0016] According to an embodiment of this disclosure, the first mounting plate and the second mounting plate are coplanar on one side to form a second mounting surface, and the beam assembly is disposed on the second mounting surface.

[0017] According to embodiments of this disclosure, the first mounting plate and / or the second mounting plate are configured in a generally fan-shaped structure.

[0018] According to embodiments of this disclosure, different numbers of the aforementioned beam modules are provided on the first mounting plate and the second mounting plate.

[0019] According to embodiments of this disclosure, the same number of beam modules are provided on the first mounting plate and the second mounting plate.

[0020] According to an embodiment of this disclosure, the support assembly includes: a base configured as a skid structure; and two legs disposed at opposite ends of the base, with the roller rotatably disposed between the two legs.

[0021] According to embodiments of this disclosure, the gantry for radiotherapy equipment further includes a drive assembly adapted to drive the aforementioned rollers to rotate about an axis.

[0022] According to an embodiment of the present disclosure, the drive assembly includes: a ring gear, coaxially disposed on the outer wall of the first end of the roller; and a drive unit, which is connected to the ring gear and is adapted to output torque to the ring gear.

[0023] According to embodiments of this disclosure, the gantry for radiotherapy equipment further includes a detection component suitable for detecting the rotational speed and / or circumferential position of the aforementioned rollers.

[0024] According to embodiments of this disclosure, the gantry for radiotherapy equipment further includes a braking assembly adapted to limit further rotation of the aforementioned rollers.

[0025] This disclosure also provides a radiotherapy device, including: a radiotherapy device gantry; a beam assembly and a power distribution assembly; wherein the beam assembly and the power distribution assembly are disposed on a roller of the radiotherapy device gantry to rotate synchronously with the roller. Attached Figure Description

[0026] Figure 1 is a perspective view of an ultra-high dose rate radiotherapy device according to an illustrative embodiment of the present disclosure, showing the gantry for the radiotherapy device;

[0027] Figure 2 is a schematic diagram of the frontal view of the illustrative embodiment shown in Figure 1;

[0028] Figure 3 is a perspective view of the support frame and adjustment assembly portion of the schematic embodiment shown in Figure 1;

[0029] Figure 4 is a schematic diagram of the adjustment component of the illustrative embodiment shown in Figure 3 from a top view.

[0030] Figure 5 is a perspective view of the gantry for a radiotherapy device according to the schematic embodiment shown in Figure 1, showing the support components and rollers.

[0031] In the accompanying drawings, the reference numerals have the following specific meanings: 10. Frame for radiotherapy equipment; 11. Roller; 12. Distributor bracket; 13. Support assembly; 131. Leg; 132. Base; 133. Lifting ring; 14. Bearing frame; 141. Mounting part; 142. Bearing part; 15. Mounting plate; 151. First mounting plate; 152. Second mounting plate; 16. Adjustment assembly; 161. Moving plate; 162. Assembly beam; 163. Lifting component; 164. Lifting screw; 165. Lifting block; 166. First screw; 167. Second screw; 17. Drive assembly; 171. Ring gear; 172. Drive part; 18. Detection assembly; 20. Pulse transformer; 30. Beam assembly; 31. Beam module. Detailed Implementation

[0032] To make the objectives, technical solutions and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0033] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0034] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0035] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted according to the understanding of someone skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0036] It should be noted that, unless otherwise specified, in this article, "ultra-high dose rate" includes dose rates exceeding 40 Gy / s over a short period of time, such as an average dose rate exceeding 300 Gy / s. Ultra-high dose rates can be applied in fields such as medical radiotherapy, container security inspection, and industrial imaging.

[0037] Flash therapy, also known as ultra-high dose rate radiotherapy (FLASH-RT), is a treatment option for tumor radiotherapy. Utilizing flash therapy technology, it kills tumor cells while having lower toxicity to normal tissues. It also reduces the risk of damage to the patient's body from postoperative administration of large amounts of rejection drugs, shortens the postoperative recovery period, and improves postoperative quality of life. In other words, FLASH-RT uses ultra-fast irradiation, with a dose rate several orders of magnitude higher than that used in traditional radiotherapy (e.g., 20-100 Gy / s compared to 1-4 Gy / min). This ultra-high dose rate reduces the direct radiation-induced toxicity to normal tissues while maintaining the same effective response to lesions; this is the so-called "flash effect."

[0038] Figure 1 is a perspective view of an ultra-high dose rate radiotherapy apparatus according to an illustrative embodiment of the present disclosure, showing the gantry for the radiotherapy apparatus. Figure 2 is a schematic diagram of the front view of the illustrative embodiment shown in Figure 1.

[0039] Referring to Figures 1 and 2, the ultra-high dose rate radiotherapy device provided in this embodiment includes a radiotherapy gantry 10, a beam assembly 30, and a power distribution assembly. The beam assembly 30 and the power distribution assembly are mounted on the drum 11 of the radiotherapy gantry 10 and rotate synchronously with the drum 11. In addition, the ultra-high dose rate radiotherapy device also includes at least a power combining assembly, a power source assembly, and a pulse transformer 20.

[0040] The pulse transformer 20 converts low-voltage DC power into high-voltage pulse power and supplies it to the power source. The power source assembly generates microwave energy to provide power for the operation of the ultra-high dose rate radiotherapy equipment. The power combining assembly combines the microwave energy provided by the power source assembly to increase the microwave power. The power distribution module distributes the microwaves equally among the different beam modules 31 in the beam assembly 30. The multiple beam modules 31 in the beam assembly 30 convert the received microwaves equally into particle rays and converge at a single point.

[0041] Based on the overall inventive concept, in order to assemble and integrate the above-mentioned components of the ultra-high dose rate radiotherapy equipment, it is necessary to provide a radiotherapy equipment rack for installing and removing the ultra-high dose rate radiotherapy equipment, so that the ultra-high dose rate radiotherapy equipment at least partially meets the design requirements.

[0042] This disclosure provides a gantry for a radiotherapy device, as shown in Figures 1 and 2, including a support assembly 13, a roller 11, and a carrier frame 14. The roller 11 is configured as a horizontal structure, having a first axial end and a second axial end. The first and second axial ends of the roller 11 are rotatably mounted on the support assembly 13. The carrier frame 14 is disposed on the outer wall of the first end and is suitable for supporting an external pulse transformer 20, so that the pulse transformer 20 rotates synchronously with the roller 11.

[0043] In one illustrative embodiment, as shown in Figures 1 and 2, the roller 11 of the radiotherapy equipment frame 10 is configured as a generally cylindrical structure. To meet the assembly and usage requirements of the roller 11 with other components, suitable through holes and / or grooves can be formed in the main cylindrical structure, specifically through holes suitable for accommodating particle beams. Furthermore, to meet the assembly and load-bearing requirements of the roller 11 with other components of the ultra-high dose rate radiotherapy equipment, an appropriate number of reinforcing ribs can be provided on its inner and / or outer walls. These reinforcing ribs can be arranged either circumferentially or axially along the roller 11.

[0044] In one illustrative embodiment, as shown in Figures 1 and 2, the roller 11 of the radiotherapy equipment gantry 10 is configured in a horizontal structure, meaning that the axis AX1 of the roller 11 extends along the x-direction shown in Figure 1, and this x-direction is approximately parallel to the horizontal plane. This allows the tumor patient to be horizontally fed into the internal space of the roller 11 during radiotherapy.

[0045] In one illustrative embodiment, as shown in Figures 1 and 2, the gantry 10 of the radiotherapy equipment is provided with a support frame 14. Specifically, the support frame 14 is mounted on the outer wall of the drum 11, specifically on the outer wall surface of the drum 11, and extends radially outward along the drum 11. Furthermore, the pulse transformer 20 configured in the ultra-high dose rate radiotherapy equipment is mounted on the support frame 14 to connect to the drum 11 via the support frame 14, and rotates synchronously with the drum 11 during its rotation. The support frame 14 is mounted on the outside of the drum 11 by means including but not limited to riveting, welding, bolting, integral forming, and any other method.

[0046] In this embodiment, the drum 11 is rotatably mounted on the support assembly 13, providing a reliable mounting platform for the ultra-high dose rate radiotherapy equipment. This allows the particle beams output from the multiple beam modules configured in the ultra-high dose rate radiotherapy equipment to be precisely focused within the drum 11. A carrier frame is used to mount the pulse transformer onto the drum 11 and move with it, positioning and connecting it to other components of the ultra-high dose rate radiotherapy equipment. During operation of the ultra-high dose rate radiotherapy equipment, the pulse transformer converts low-voltage DC power to high-voltage pulse power, thereby coordinating with the power source to provide the necessary energy to the accelerating tubes in the beam modules to generate high-energy particle beams.

[0047] According to embodiments of this disclosure, as shown in Figures 1 and 2, the roller 11 of the radiotherapy equipment gantry is also adapted to mount an external beam assembly 30 and a power distribution assembly (not shown in the figures), so that the beam assembly 30 and the power distribution assembly rotate synchronously with the roller 11. The beam assembly 30 is disposed on the outer side of the second end of the roller 11, which is away from the first end, and the power distribution assembly is disposed on the outer wall of the portion of the roller 11 located between the first and second ends.

[0048] In one illustrative embodiment, as shown in FIG1, a support frame 14 is disposed on the outer wall of the roller 11 near the first end, a beam assembly 30 is disposed on the second end of the roller 11, and a power distribution assembly (not shown in the figure) is disposed on the portion of the roller 11 located between the first and second ends. In this way, by installing different components of the ultra-high dose rate radiotherapy device on different parts of the roller 11, the stress on each part of the roller 11 can be made more uniform, preventing stress concentration and effectively preventing uneven loading of the roller 11 during rotation.

[0049] Figure 3 is a perspective view of the support frame and adjustment assembly portion of the schematic embodiment shown in Figure 1.

[0050] According to an embodiment of this disclosure, as shown in Figures 1 and 3, the support frame 14 includes a mounting portion 141 and a support portion 142. The mounting portion 141 is disposed on the outer wall of the roller 11 and extends radially outward along the roller 11. The support portion 142 is disposed at the end of the mounting portion 141 away from the roller 11 and forms a first mounting surface parallel to the axis of the roller 11.

[0051] In one illustrative embodiment, as shown in FIG3, two support frames 14 are provided on the roller 11, which are symmetrically arranged on both radial sides of the roller 11. Specifically, a pulse transformer 20 is mounted on the first mounting surface formed by each support frame 14. The pulse transformers 20 located on both sides of the axis of the roller 11 are respectively connected to a power distribution component nearby.

[0052] For example, the power distribution assembly may include two power dividers. One power divider can be mounted on the upper part of the roller 11 via a divider bracket 12, and the other power divider can be mounted on the lower part of the roller 11 via another divider bracket (not shown in the figure). The two power dividers are respectively connected to a pulse transformer 20 via waveguides.

[0053] In one illustrative embodiment, as shown in Figures 1 and 3, each support frame 14 includes two mounting portions 141 disposed opposite each other on the outer wall of the roller 11. Specifically, a bearing portion 142 is provided between the lower ends of the two mounting portions 141.

[0054] In one illustrative embodiment, as shown in FIG3, the mounting portion 141 is configured as a generally "T"-shaped plate structure. Its narrower upper end can be directly or indirectly mounted to the outer wall of the roller 11 via other connecting members, while its wider lower end is used to mount the support portion 142. Specifically, the support portion 142 includes, but is not limited to, a generally rectangular plate structure, with its two opposite sides mounted on the mounting portion 141 on the same side. As shown in FIG3, the upper surface of the support portion 142 forms the aforementioned first mounting surface to support the pulse transformer 20. The support portion 142 and the mounting portion 141 are connected by, but not limited to, riveting, welding, bolting, integral connection, or any other method.

[0055] Figure 4 is a schematic diagram of the adjustment component of the illustrative embodiment shown in Figure 3 from a top view.

[0056] In one illustrative embodiment, the pulse transformer 20 is connected to the power distribution component via a waveguide (not shown) so that the output of the pulse transformer 20 can output a microwave signal to the power distribution component. The waveguide is used to guide the microwave signal to the power distribution component.

[0057] In one illustrative embodiment, the waveguide includes, but is not limited to, hollow metal tubes configured with circular, square, and elliptical cross-sections. Because the waveguide is rigid, precise relative positioning of the pulse transformer 20 and the power distribution assembly is required when using it to connect the pulse transformer 20 to the power distribution assembly. However, during the assembly of the support frame 14 and the roller 11, insurmountable assembly errors inevitably exist, making it difficult to achieve precise positioning between the pulse transformer 20 and the power distribution assembly, thus preventing an effective connection between the pulse transformer 20 and the power distribution assembly via the waveguide.

[0058] In view of this, referring to Figures 3 and 4, according to an embodiment of the present disclosure, the gantry for radiotherapy equipment further includes an adjustment assembly 16. The adjustment assembly 16 is disposed between the support frame 14 and the pulse transformer 20, and is adapted to adjust the position of the pulse transformer 20 relative to the power distribution assembly and to hold the pulse transformer 20 in the assembled position. Thus, the position of the pulse transformer 20 disposed on the support frame 14 can be adjusted by the adjustment assembly 16, for example, along the x-direction and / or y-direction as shown in Figure 3, so that the spacing between the pulse transformer 20 and the power distribution assembly is precisely connected via a waveguide.

[0059] According to embodiments of the present disclosure, as shown in Figures 3 and 4, the adjustment component 16 is disposed on the support portion 142 and is adapted to move the pulse transformer 20 in a direction parallel to the first mounting surface and / or in a direction orthogonal to the first mounting surface toward or away from the roller 11.

[0060] According to embodiments of this disclosure, as shown in Figures 3 and 4, the adjustment assembly 16 includes a movable plate 161 and a lifting member 163. The movable plate 161 is slidably disposed on a first mounting surface and is adapted to translate along a first direction or a second direction. The lifting member 163 is disposed on the movable plate 161 and abuts against the first mounting surface, and is adapted to adjust the distance between the movable plate 161 and the first mounting surface along a third direction. A pulse transformer 20 is mounted on the movable plate 161 to move synchronously with the movable plate 161.

[0061] According to embodiments of the present disclosure, as shown in Figures 3 and 4, the adjustment assembly 16 further includes a limiting member adapted to limit the displacement of the moving plate 161 along the first and second directions, so as to keep the pulse transformer 20 in the assembled position.

[0062] In one illustrative embodiment, as shown in Figures 3 and 4, the adjusting assembly 16 includes a movable plate 161, which is connected to the first mounting surface of the support portion 142 of the support frame 14 by a second screw 167. Specifically, mounting beams 162 are integrally provided at both ends of the movable plate 161 along the x-direction as shown in Figure 3. The two mounting beams 162 have a larger gap with the first mounting surface than the gap between the movable plate 161 and the first mounting surface, to facilitate the placement of the lifting member 163.

[0063] In one illustrative embodiment, as shown in Figures 3 and 4, the adjusting assembly 16 includes multiple pairs of lifting members 163, with two lifting members 163 in each pair symmetrically arranged at the corners of the moving plate 161; that is, one lifting member 163 is provided at each corner of the moving plate. Each lifting member 163 includes an integrally formed screw and a ball head. It should be understood that the embodiments of this disclosure are not limited thereto.

[0064] For example, the number of lifting components 163 can also be set to 2, 3, 5, 6 or any other arbitrary number.

[0065] For example, the lifting component 163 can also be located in the middle of the movable plate 161 or in other positions.

[0066] In one illustrative embodiment, as shown in Figures 3 and 4, a ball bearing is rolled within the ball head of the lifting member 163, and this ball bearing presses against the first mounting surface. Furthermore, the screw of the lifting member 163 extends along the y-direction as shown in Figure 3 and is threadedly engaged with the assembly beam 162. Thus, the moving plate 161 can be slidably supported on the first mounting surface of the bearing portion 142 by the lifting member 163, allowing the moving plate 161 to translate relative to the first mounting surface and adjusting the distance between the moving plate 161 and the first mounting surface.

[0067] In one illustrative embodiment, as shown in Figures 3 and 4, the base plate located at the bottom of the pulse transformer 20 is fixed to the movable plate 161 by a first screw 166, forming an integral connection with the movable plate 161, thereby allowing it to move or rise and fall with the movable plate 161. With the participation of the aforementioned lifting member 163, the pulse transformer 20 can achieve adjustment of its relative position with the first mounting surface to facilitate precise connection with the waveguide. However, in addition to meeting the design requirement of position adjustment, corresponding limiting members are also required to hold the pulse transformer 20 and the power distribution assembly in their assembled positions after connection, preventing misalignment during the rotation of the roller 11.

[0068] In one illustrative embodiment, as shown in Figures 3 and 4, the limiting member includes a top block 165, a set screw 164 disposed on the top block 165, and the aforementioned second screw 167. Specifically, the top blocks 165 are arranged in pairs along the x and y directions of the movable plate 161 as shown in Figure 4. Further, each top block 165 is threadedly connected to a set screw 164, the end of which presses against the edge of the movable plate 161, thereby adjusting and locking the position of the movable plate 161 relative to the support portion 142 by the portion of the set screw 164 extending relative to the top block 165. Furthermore, although the lifting member 163 is threadedly connected to the assembly beam 162 and has a certain limiting effect along the z direction as shown in Figure 3 under the action of friction, there is still a risk of relative movement under the centrifugal force of the rotating roller 11. Therefore, in this embodiment, the movable plate 161 and the support portion 142 are further fixed together by the second screw 167 to maintain their relative distance.

[0069] Figure 5 is a perspective view of the gantry for a radiotherapy device according to the schematic embodiment shown in Figure 1, showing the support components and rollers.

[0070] According to embodiments of this disclosure, as shown in Figures 1 and 2, the gantry for radiotherapy equipment further includes a mounting plate 15 disposed on the outer wall of the second end of the roller 11 and extending outward in the radial direction of the roller 11. A beam assembly 30 is disposed on the mounting plate 15.

[0071] According to embodiments of this disclosure, as shown in Figures 1 and 2, the gantry for radiotherapy equipment includes a first mounting plate 151 and a second mounting plate 152. The first mounting plate 151 is disposed on a first side of the second end. The second mounting plate 152 is disposed on a second side of the second end opposite to the first side. The beam assembly 30 includes a plurality of beam modules 31, some of which are disposed on the first mounting plate 151, and others are disposed on the second mounting plate 152. The output ends of the beam modules 31 are all positioned facing the axis of the drum 11, so that the particle beams output by each beam module 31 converge at a point on the axis of the drum 11.

[0072] In one illustrative implementation, as shown in Figures 1 and 2, each beam module 31 in the beam assembly 30 is, but is not limited to, constructed with the same structure. This modular design not only shortens the processing cycle of the beam module 31, but also facilitates compatibility with external structures, thereby improving the adaptability and interchangeability of the beam module 31.

[0073] In one illustrative embodiment, each beam module 31 includes a beam module base, a collimating mounting base, and a flange disposed opposite to the collimating mounting base. Further, the beam module 31 also includes at least a high-energy accelerating tube and a V-shaped collimating unit. The high-energy accelerating tube is mounted on the beam module base, and its output end is located within the cavity formed by the beam module base. A flange is provided at the output end of the high-energy accelerating tube to precisely position the high-energy accelerating tube and the beam module base, positioning them opposite to the collimating mounting base. The V-shaped collimating unit is disposed at the opposite end of the collimating mounting base. This allows charged ions accelerated by the high-energy accelerating tube to be accurately ejected after collimation.

[0074] According to an embodiment of this disclosure, as shown in FIG5, the first mounting plate 151 and the second mounting plate 152 are coplanar on one side to form a second mounting surface, and the beam assembly 30 is disposed on the second mounting surface.

[0075] According to an embodiment of the present disclosure, as shown in FIG5, the first mounting plate 151 and / or the second mounting plate 152 are configured in a generally fan-shaped structure.

[0076] According to an embodiment of this disclosure, as shown in FIG5, a different number of beam modules 31 are provided on the first mounting plate 151 and the second mounting plate 152.

[0077] In one illustrative embodiment, as shown in FIG5, a first mounting plate 151 is disposed at the upper end of the roller 11, and a second mounting plate 152 is disposed at the lower end of the roller 11. The two mounting plates are coplanarly disposed in the plane formed by the y-direction and the z-direction as shown in FIG5. Specifically, the first mounting plate 151 and the second mounting plate 152 include, but are not limited to, plate-like structures configured in a generally fan-shaped manner. Further, both the first mounting plate 151 and the second mounting plate 152 are provided with multiple through holes spaced apart along the arc extension direction. Each mounting hole corresponds to a beam module 31, suitable for accurately positioning the beam module 31 circumferentially on the mounting plate.

[0078] In one illustrative embodiment, as shown in FIG5, the arc of the arc structure formed by the first mounting plate 151 is configured to be greater than the arc of the arc structure formed by the second mounting plate 152. Specifically, the number of through holes provided on the first mounting plate 151 is also configured to be greater than the number of through holes provided on the second mounting plate 152. For example, three through holes may be provided on the first mounting plate 151, and two through holes may be provided on the second mounting plate 152, so that more beam modules 31 are mounted on the first mounting plate 151 along the circumference of the roller 11 than on the second mounting plate 152.

[0079] In one illustrative embodiment, as shown in FIG5, the first mounting plate 151 is provided with, but is not limited to, three beam modules 31. Further, the second mounting plate 152 is provided with, but is not limited to, two beam modules 31. The particle beams output by each beam module 31 are converged on the axis of the roller 11. It should be understood that the embodiments of this disclosure are not limited thereto.

[0080] For example, according to another embodiment of this disclosure (not shown in the figures), the same number of beam modules 31 are provided on the first mounting plate 151 and the second mounting plate 152.

[0081] For example, the beam module 31 may be provided on only the first mounting plate 151 or the second mounting plate 152, while the other mounting plate may be provided with a counterweight.

[0082] The position and number of beam modules 31 configured on the first mounting plate 151 and the second mounting plate 152 should preferably meet the dose requirements of the particle beam required for treatment.

[0083] According to an embodiment of this disclosure, as shown in FIG5, the support assembly 13 includes a base 132 and two legs 131. The base 132 is configured as a skid-type structure. The two legs 131 are disposed at opposite ends of the base 132, and a roller 11 is rotatably disposed between the two legs 131.

[0084] In one illustrative embodiment, as shown in FIG5, the base 132 includes a crossbeam and a longitudinal beam, which are sequentially connected to form a skid-type structure. Further, two support legs 131 are mounted opposite each other on the two crossbeams or longitudinal beams. Even further, the first and second axial ends of the roller 11 are rotatably mounted on the support legs 131. To ensure smooth rotation of the roller 11 relative to the support legs 131, a bearing is provided between the roller 11 and the support legs 131. Additionally, to facilitate the transport of radiotherapy equipment gantry and ultra-high dose rate radiotherapy equipment, lifting rings 133 can be provided on the base 132.

[0085] According to an embodiment of this disclosure, as shown in FIG5, the gantry for radiotherapy equipment further includes a drive assembly 17. The drive assembly 17 is adapted to drive the roller 11 to rotate about an axis.

[0086] According to an embodiment of this disclosure, as shown in FIG5, the drive assembly 17 includes a ring gear 171 and a drive unit 172. The ring gear 171 is coaxially disposed on the outer wall of the first end of the roller 11. The drive unit 172 and the ring gear 171 are connected for transmission, and are adapted to output torque to the ring gear 171.

[0087] According to an embodiment of this disclosure, as shown in FIG5, the gantry for the radiotherapy equipment further includes a braking assembly. The braking assembly is adapted to limit further rotation of the roller 11.

[0088] In one illustrative embodiment, as shown in Figure 5, the drive unit includes a motor, a coupling, and a reducer, and the braking assembly includes an electromagnetic brake. The output shaft of the motor is connected to the electromagnetic brake and the reducer via the coupling. The output end of the reducer is connected to a pinion mounted on the support leg 131 via a synchronous belt. This pinion meshes with a ring gear 171 mounted on the drum 11 to drive the drum 11 to rotate around its axis. The synchronous belt is also equipped with a tensioning device to maintain stability during the drive process. Furthermore, compared to chain drive, synchronous belt drive reduces noise and improves transmission efficiency, meeting the design requirements of ultra-high dose rate radiotherapy equipment. Further, the radiotherapy equipment frame 10 may also be equipped with a proximity switch, which is communicatively connected to the electromagnetic brake to actively brake the drum 11 when the drum rotates beyond a preset angle. The preset angle includes, but is not limited to, ±180°.

[0089] According to an embodiment of this disclosure, as shown in FIG5, the gantry for radiotherapy equipment further includes a detection component 18. The detection component 18 is adapted to detect the rotational speed and / or circumferential position of the roller 11.

[0090] In one illustrative embodiment, the detection component 18 includes, but is not limited to, an encoder. Specifically, the encoder is mounted on a support leg 131. Furthermore, the outer wall of the roller 11 is also provided with a code disk suitable for detection by the support leg 131 to detect the rotation angle of the roller 11 in real time.

[0091] This disclosure also provides a radiotherapy device, including: a gantry for the radiotherapy device, a beam assembly, and a power distribution assembly. The beam assembly and the power distribution assembly are mounted on a roller of the gantry for the radiotherapy device to rotate synchronously with the roller.

[0092] As can be seen from the illustrative embodiments of this disclosure, both the first and second ends of the roller are rotatably mounted on the support assembly. Compared to a cantilever structure, both ends of the roller are supported by the support assembly, thus distributing the force on the support assembly to meet the load-bearing requirements of the roller and other configured components. The support frame is used to support the pulse transformer on the roller, positioning the pulse transformer and other components of the ultra-high dose rate radiotherapy equipment, and enabling the pulse transformer roller to rotate synchronously.

[0093] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this disclosure.

[0094] The embodiments of this disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of this disclosure. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of this disclosure is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of this disclosure, and all such substitutions and modifications should fall within the scope of this disclosure.

Claims

1. A gantry for radiotherapy equipment, comprising: Support components; The roller is configured as a horizontal structure and has an axial first end and a second end, which are rotatably mounted on the support assembly. as well as A support frame, disposed on the outer wall of the first end, is suitable for supporting an external pulse transformer so that the pulse transformer rotates synchronously with the drum.

2. The rack of claim 1, wherein, The roller is also suitable for mounting external beam components and power distribution components, so that the beam components and power distribution components rotate synchronously with the roller; The beam assembly is disposed on the outer side of the second end, and the power distribution assembly is disposed on the outer wall of the portion of the roller located between the first end and the second end.

3. The rack of claim 2, wherein, It also includes an adjustment component disposed between the support frame and the pulse transformer, which is suitable for adjusting the position of the pulse transformer relative to the power distribution component and holding the pulse transformer in the assembled position.

4. The rack of claim 3, wherein, The support frame includes: The mounting portion is disposed on the outer wall of the roller and extends radially outward along the roller; and A support portion is disposed at the end of the mounting portion away from the roller, and forms a first mounting surface parallel to the axis of the roller.

5. The rack of claim 4, wherein, The adjustment component is disposed on the bearing portion and is adapted to move the pulse transformer in a direction parallel to the first mounting surface and / or in a direction orthogonal to the first mounting surface toward or away from the roller.

6. The rack of claim 5, wherein, The adjustment component includes: A movable plate, slidably disposed on the first mounting surface, is suitable for translation along a first direction or a second direction; and A lifting component is disposed on the movable plate and abuts against the first mounting surface, and is suitable for adjusting the distance between the movable plate and the first mounting surface in a third direction; The pulse transformer is mounted on the movable plate so that it moves synchronously with the movable plate.

7. The rack of claim 6 wherein, The adjustment assembly further includes a limiting member, which is adapted to limit the displacement of the moving plate along the first direction and the second direction, so as to keep the pulse transformer in the assembly position.

8. The rack of claim 2, wherein, It also includes a mounting plate disposed on the outer wall of the second end of the roller and extending outward along the radial direction of the roller; The beam assembly is mounted on the mounting plate.

9. The rack of claim 8, wherein, include: A first mounting plate is disposed on the first side of the second end; as well as A second mounting plate is disposed on the second end, on the second side opposite to the first side; The beam assembly includes multiple beam modules, some of which are disposed on the first mounting plate and others are disposed on the second mounting plate; The output ends of each beam module are positioned facing the axis of the drum, so that the particle beams output by each beam module converge at a point on the axis of the drum.

10. The rack of claim 9, wherein, The first mounting plate and the second mounting plate are coplanar on one side to form a second mounting surface, and the beam assembly is disposed on the second mounting surface.

11. The rack of claim 9, wherein, The first mounting plate and / or the second mounting plate are configured in a generally fan-shaped structure.

12. The rack of claim 9, wherein, The first mounting plate and the second mounting plate are provided with different numbers of the beam modules.

13. The rack of claim 9, wherein, The first mounting plate and the second mounting plate are provided with the same number of beam modules.

14. The rack of any one of claims 1 to 13, wherein, The supporting assembly comprises: a base configured as a crowbar structure; and two legs provided at two opposite ends of the base, and the drum is rotatably arranged between the two legs.

15. The rack of any one of claims 1 to 13, wherein, Further comprising a driving assembly adapted to drive the drum to rotate around an axis.

16. The rack of claim 15, wherein, The driving assembly comprises: a ring gear coaxially arranged on an outer wall of the first end of the drum; and a driving part in transmission connection with the ring gear and adapted to output torque to the ring gear.

17. The rack of any one of claims 1 to 13, wherein, Further comprising a detection assembly adapted to detect the rotational speed and / or circumferential position of the drum.

18. The rack of any one of claims 1 to 13, wherein, Further comprising a braking assembly adapted to limit further rotation of the drum.

19. A radiotherapy device comprising: a radiotherapy device gantry according to any one of claims 1 to 18; a beam assembly and a power distribution assembly; wherein the beam assembly and the power distribution assembly are arranged on the drum of the radiotherapy device gantry to rotate in synchronization with the drum.

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