Rack for radiotherapy apparatus and radiotherapy apparatus

Abstract

The present disclosure provides a rack for radiotherapy equipment and a radiotherapy equipment. The rack for radiotherapy equipment comprises a supporting assembly, a drum configured in a horizontal structure, having an axial first end and a second end, both of which are rotatably arranged on the supporting assembly, and a carrier arranged on the outer wall of the first end and adapted to carry an external pulse transformer so that the pulse transformer rotates synchronously with the drum. The drum is adapted to provide a reliable mounting platform for a super high dose rate radiotherapy equipment, so that the particle rays output by a plurality of beam modules configured on the super high dose rate radiotherapy equipment can be accurately converged in the drum. Both the first end and the second end of the drum are rotatably arranged on the supporting assembly to meet the bearing capacity requirements of the drum and other components arranged thereon, so that the rack for radiotherapy equipment forms a reliable mounting platform. The carrier is used to assemble the pulse transformer on the drum and synchronize with the drum.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of radiotherapy, in particular to a gantry for radiotherapy equipment and a radiotherapy equipment. BACKGROUND

[0002] Tumor treatment is an important topic in modern medical research, among which radiotherapy is a method of using ionizing radiation to cause damage to the DNA of cancer cells, thereby inhibiting or killing cancer cells, to achieve the purpose of treating tumors.

[0003] Ultra-high dose rate radiotherapy, also known as flash radiotherapy (Flash-RT or flash therapy), is a new radiotherapy technology, which is characterized by compressing the irradiation time to milliseconds to complete high-dose radiation of the tumor, and the radiation dose can reach 40 Gy / s or more to obtain a unique biological effect. Thus, on the basis of maintaining the killing effect on tumor cells, the damage to normal tissues is reduced.

[0004] The ultra-high dose rate radiotherapy equipment includes a gantry and other components arranged on the gantry. At present, the gantry for radiotherapy equipment includes a roller and a supporting assembly. One end of the roller in the axial direction is rotatably arranged on the supporting assembly to form a cantilever structure. However, the load bearing capacity of this structure is low, which is difficult to meet the load bearing capacity requirements of the ultra-high dose rate radiotherapy equipment. SUMMARY

[0005] To solve the above and other aspects of at least one technical problem in the prior art, embodiments of the present disclosure provide a gantry for radiotherapy equipment, which is suitable for being used as a mounting base of an ultra-high dose rate radiotherapy equipment. The first end and the second end of the roller are rotatably arranged on the supporting assembly to meet the load bearing capacity requirements of the roller.

[0006] Embodiments of the present disclosure provide a gantry for radiotherapy equipment, which includes a supporting 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 arranged on the supporting assembly, and a load bearing frame arranged on the outer wall of the first end, suitable for bearing an external pulse transformer, so that the pulse transformer rotates synchronously with the roller.

[0007] According to embodiments of the present disclosure, the roller is also suitable for mounting external beam components and power distribution components, so that the beam components and the power distribution components rotate synchronously with the roller; wherein the beam components are arranged on the outside of the second end, and the power distribution components are arranged on the outer wall of the part of the roller between the first end and the second end.

[0008] According to an embodiment of the present disclosure, the gantry for radiotherapy device further comprises an adjusting assembly arranged between the bearing frame and the pulse transformer, and adapted to adjust the position of the pulse transformer relative to the power distribution assembly and keep the pulse transformer in the assembly position.

[0009] According to an embodiment of the present disclosure, the bearing frame comprises a mounting portion arranged on the outer wall of the roller and extending outward along the radial direction of the roller, and a bearing portion arranged at the end of the mounting portion away from the roller and forming a first mounting surface parallel to the axis of the roller.

[0010] According to an embodiment of the present disclosure, the adjusting assembly is arranged on the bearing portion and adapted to translate the pulse transformer in a direction parallel to the first mounting surface and / or approach or move away from the roller in a direction perpendicular to the first mounting surface.

[0011] According to an embodiment of the present disclosure, the adjusting assembly comprises a moving plate slidably arranged on the first mounting surface and adapted to translate in a first direction or a second direction, and a jacking member arranged on the moving plate and abutting against the first mounting surface and adapted to adjust the distance between the moving plate and the first mounting surface in a third direction; wherein the pulse transformer is assembled on the moving plate to move synchronously with the moving plate.

[0012] According to an embodiment of the present disclosure, the adjusting assembly further comprises a limiting member adapted to limit the displacement of the moving plate in the first direction and the second direction, so as to keep the pulse transformer in the assembly position.

[0013] According to an embodiment of the present disclosure, the gantry for radiotherapy device further comprises a mounting plate arranged on the outer wall of the second end of the roller and extending outward along the radial direction of the roller; and the beam assembly is arranged on the mounting plate.

[0014] According to an embodiment of the present disclosure, the gantry for radiotherapy device comprises a first mounting plate arranged on the first side of the second end, and a second mounting plate arranged on the second side of the second end opposite to the first side; the beam assembly comprises a plurality of beam modules, part of the beam modules are arranged on the first mounting plate, and the other part of the beam modules are arranged on the second mounting plate; wherein the output ends of the beam modules all face the axis of the roller, so that the particle beams output by each of the beam modules converge at a point on the axis of the roller.

[0015] According to an embodiment of the present disclosure, one side surface of the first mounting plate and the second mounting plate is arranged coplanarly to form a second mounting surface, and the beam assembly is arranged on the second mounting surface.

[0016] According to an embodiment of the present disclosure, the first mounting plate and / or the second mounting plate is configured in a substantially sector shape.

[0017] According to an embodiment of the present disclosure, the first mounting plate and the second mounting plate are provided with different numbers of beam modules.

[0018] According to an embodiment of the present disclosure, the first mounting plate and the second mounting plate are provided with the same number of beam modules.

[0019] According to an embodiment of the present disclosure, the support assembly comprises a base configured in a crowbar shape, and two legs provided at opposite ends of the base, and the drum is rotatably arranged between the two legs.

[0020] According to an embodiment of the present disclosure, the gantry for radiotherapy equipment further comprises a driving assembly adapted to drive the drum to rotate around the axis.

[0021] According to an embodiment of the present disclosure, the driving assembly comprises a ring gear coaxially arranged on the 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.

[0022] According to an embodiment of the present disclosure, the gantry for radiotherapy equipment further comprises a detection assembly adapted to detect the rotational speed and / or the circumferential position of the drum.

[0023] According to an embodiment of the present disclosure, the gantry for radiotherapy equipment further comprises a braking assembly adapted to limit further rotation of the drum.

[0024] The present disclosure also provides a radiotherapy equipment comprising a gantry for radiotherapy equipment, a beam assembly and a power distribution assembly, wherein the beam assembly and the power distribution assembly are arranged on the drum of the gantry for radiotherapy equipment to rotate synchronously with the drum.

[0025] According to the technical scheme provided by the illustrative embodiment of the present disclosure, the first end and the second end of the drum are rotatably arranged on the support assembly. Compared with the cantilever structure, both ends of the drum are supported by the support assembly, so that the stress of the support assembly can be dispersed to meet the bearing capacity requirement of the drum and other components arranged thereon. The bearing frame is used to carry the pulse transformer on the drum to position the pulse transformer and other components of the ultra-high dose rate radiotherapy equipment, and to rotate the pulse transformer drum synchronously. BRIEF DESCRIPTION OF DRAWINGS

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

[0027] Figure 2 is Figure 1 schematic diagram of the front view perspective of the schematic embodiment shown in

[0028] Figure 3 is Figure 1 schematic diagram of the perspective view of the carrier frame and adjustment assembly part of the schematic embodiment shown in

[0029] Figure 4 is Figure 3 schematic diagram of the top view perspective of the adjustment assembly of the schematic embodiment shown in

[0030] Figure 5 is Figure 1 schematic diagram of the perspective view of the gantry for radiotherapy equipment of the schematic embodiment shown in, showing the support assembly and the roller.

[0031] In the drawings, the meanings of the reference signs are as follows:

[0032] 10, gantry for radiotherapy equipment;

[0033] 11, roller;

[0034] 12, distributor support;

[0035] 13, support assembly;

[0036] 131, leg;

[0037] 132, base;

[0038] 133, lifting eye;

[0039] 14, carrier frame;

[0040] 141, mounting portion;

[0041] 142, carrying portion;

[0042] 15, mounting plate;

[0043] 151, first mounting plate;

[0044] 152, second mounting plate;

[0045] 16, adjustment assembly;

[0046] 161, moving plate;

[0047] 162, assembly beam;

[0048] 163, jacking piece;

[0049] 164, jackscrew;

[0050] 165, jack block;

[0051] 166、first screw;

[0052] 167、second screw;

[0053] 17、drive assembly;

[0054] 171、ring gear;

[0055] 172、drive portion;

[0056] 18、detection assembly;

[0057] 20、pulse transformer;

[0058] 30、beam assembly;

[0059] 31、beam module. DETAILED DESCRIPTION

[0060] In order to make the objects, technical solutions and advantages of the present disclosure clearer, the following will further describe the present disclosure with specific embodiments and with reference to the drawings.

[0061] The terms used herein are only used to describe specific embodiments, and are not intended to limit the present disclosure. The terms "include", "contain" and the like used herein indicate the presence of the described features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0062] All terms used herein, including technical and scientific terms, have meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted to have meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0063] In the case of using expressions similar to "at least one of A, B, and C, etc.", in general, it should be interpreted to have a meaning that the items are individually selected from the group consisting of A, B, and C, etc. for example, "a system having at least one of A, B, and C" should include but not be limited to a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc. In the case of using expressions similar to "at least one of A, B, or C, etc.", in general, it should be interpreted to have a meaning that the items are individually selected from the group consisting of A, B, and C, etc. for example, "a system having at least one of A, B, or C" should include but not be limited to a system having A alone, a system having B alone, a system having C alone, a system having both A and B, a system having both A and C, a system having both B and C, and / or a system having A, B, and C, etc.

[0064] It should be noted that, in this paper, unless otherwise specified, the expression "ultra-high dose rate" includes a dose rate of 40 Gy / s or more in a short time, for example, an average dose rate of 300 Gy / s or more. Ultra-high dose rate can be applied to medical radiotherapy, container security inspection and industrial imaging.

[0065] Taking flash therapy as an example, it is also called ultra-high dose rate radiotherapy (abbreviation: FLASH-RT), which is a treatment plan for tumor radiotherapy. Using flash therapy technology, not only has a lower toxic and side effect on normal tissues while killing tumor cells, but also reduces the risk of damage to the patient's body due to taking a large amount of exogenous drugs after surgery, shortens the recovery period after surgery and improves the quality of life after surgery. That is, FLASH-RT uses ultra-fast irradiation, and the dose rate is several orders of magnitude higher than that used in traditional radiotherapy (for example, 20-100 Gy / s compared with 1-4 Gy / min). Ultra-high dose rate can reduce the toxicity of radiation directly induced to normal tissues, while maintaining the same effective response to lesion tissues, which is called "flash effect".

[0066] Figure 1 is a perspective view of an ultra-high dose rate radiotherapy device according to an illustrative embodiment of the present disclosure, showing a radiotherapy device rack. Figure 2 is Figure 1 is a schematic diagram of the front view perspective of the illustrative embodiment shown.

[0067] Referring to Figure 1 and Figure 2 The ultra-high dose rate radiotherapy device provided by the embodiments of the present disclosure includes a radiotherapy device rack 10, a beam assembly 30, and a power distribution assembly. Among them, the beam assembly 30 and the power distribution assembly are arranged on the drum 11 of the radiotherapy device rack 10 to rotate synchronously with the drum 11. In addition, the ultra-high dose rate radiotherapy device at least includes a power synthesis assembly, a power source assembly and a pulse transformer 20.

[0068] Among them, the pulse transformer 20 is used to convert the low-voltage direct-current power supply into a high-voltage pulse power supply and provide it to the power source. The power source assembly generates microwave energy to provide an energy source for the operation of the ultra-high dose rate radiotherapy device. The power synthesis assembly is used to synthesize the microwave energy provided by the power source assembly to improve the microwave power. The power distribution module then distributes the corresponding microwave energy to different beam modules 31 in the beam assembly 30. The multiple beam modules 31 in the beam assembly 30 respond to the received microwave energy and converge to a point.

[0069] Based on the overall inventive concept, in order to assemble and integrate the above components of the ultra-high dose rate radiotherapy device, a rack for radiotherapy device is provided for mounting and moving the ultra-high dose rate radiotherapy device, so that the ultra-high dose rate radiotherapy device at least partially meets the design requirements.

[0070] The rack for radiotherapy device provided by the embodiments of the present disclosure comprises a support assembly 13, a drum 11 and a carrier frame 14. Figure 1 and Figure 2 The drum 11 is configured in a horizontal structure, having an axial first end and a second end. The axial first end and the second end of the drum 11 are rotatably arranged on the support assembly 13. The carrier frame 14 is arranged on the outer wall of the first end and is adapted to carry the external pulse transformer 20, so that the pulse transformer 20 rotates synchronously with the drum 11.

[0071] In an illustrative embodiment, as shown in Figure 1 and Figure 2 The drum 11 of the rack for radiotherapy device 10 is configured as a substantially cylindrical barrel structure. In order to meet the assembly and use requirements of the drum 11 and other components, appropriate through holes and / or groove structures can be formed on the barrel structure of the main body, which can be through holes suitable for accommodating particle rays. Further, in order to meet the assembly and carrying requirements of the drum 11 and other components of the ultra-high dose rate radiotherapy device, a suitable number of reinforcing ribs can be arranged on the inner wall and / or outer wall of the drum 11, which can be arranged along the circumferential direction of the drum 11 or along the axial direction of the drum 11.

[0072] In an illustrative embodiment, as shown in Figure 1 and Figure 1 The drum 11 of the rack for radiotherapy device 10 is configured as a horizontal structure, that is, the axis AX1 of the drum 11 extends along the x direction as shown in Figure 2 , and the x direction is substantially parallel to the horizontal plane. In this way, when the tumor patient is treated by radiotherapy, the tumor patient can be sent into the internal space of the drum 11 along the horizontal direction.

[0073] In an illustrative embodiment, as shown in Figure 1 and Figure 2 The rack for radiotherapy device 10 is provided with a carrier frame 14. In detail, the carrier frame 14 is mounted on the outer wall of the drum 11, and specifically, the carrier frame 14 extends outwardly along the radial direction of the drum 11. Further, the pulse transformer 20 configured by the ultra-high dose rate radiotherapy device is arranged on the carrier frame 14, so as to be connected with the drum 11 through the carrier frame 14 and rotate synchronously with the drum 11 during the rotation of the drum 11. The carrier frame 14 includes but is not limited to being mounted on the outside of the drum 11 by riveting, welding, bolt connection, integral formation and other any manner.

[0074] In such an embodiment, the drum 11 is rotatably arranged on the support assembly 13, and is adapted to provide a reliable mounting platform for the super high dose rate brachytherapy device, so that the particle beams outputted by the plurality of beam modules arranged on the super high dose rate brachytherapy device can be accurately converged in the drum 11. The carrier frame is adapted to mount the pulse transformer on the drum 11 and follow the drum 11, so as to be positioned and connected with other components of the super high dose rate brachytherapy device, so that during the operation of the super high dose rate brachytherapy device, the pulse transformer is adapted to convert the low-voltage direct current power into high-voltage pulse power, so as to provide the required energy for the accelerating tube in the beam module in cooperation with the power source, so as to generate high-energy particle beams.

[0075] According to an embodiment of the present disclosure, as shown in Figure 1 and Figure 3 , the drum 11 of the gantry for the brachytherapy device is also adapted to mount the external beam assembly 30 and the power distribution assembly (not shown in the figure), so that the beam assembly 30 and the power distribution assembly rotate synchronously with the drum 11. Among them, the beam assembly 30 is arranged outside the second end of the drum 11 away from the first end, and the power distribution assembly is arranged on the outer wall of the part of the drum 11 between the first end and the second end.

[0076] In an exemplary embodiment, as shown in Figure 1 , the carrier frame 14 is arranged on the outer wall of the drum 11 close to the first end, the beam assembly 30 is arranged on the second end of the drum 11, and the power distribution assembly (not shown in the figure) is arranged on the part of the drum 11 between the first end and the second end. In this way, by arranging different components of the super high dose rate brachytherapy device on different parts of the drum 11, the stress on each part of the drum 11 can be more uniform, so as to prevent stress concentration, and also more effectively prevent the situation of unbalanced load of the drum 11 during rotation.

[0077] Figure 1 is a perspective view of the carrier frame and the adjusting assembly part of the exemplary embodiment shown in Figure 3

[0078] According to an embodiment of the present disclosure, as shown in Figure 1 and 3 , the carrier frame 14 includes a mounting part 141 and a carrying part 142. The mounting part 141 is arranged on the outer wall of the drum 11 and extends outwardly along the radial direction of the drum 11. The carrying part 142 is arranged at one end of the mounting part 141 away from the drum 11, and forms a first mounting surface parallel to the axis of the drum 11.

[0079] In an exemplary embodiment, as shown in Figure 3 ​As shown, two carriers 14 are provided on the drum 11, and the two carriers 14 are symmetrically arranged on the two sides of the drum 11 in the radial direction. In detail, a first mounting surface of each carrier 14 carries a pulse transformer 20. The pulse transformers 20 located on the two sides of the axis of the drum 11 are respectively connected to a power distribution assembly in proximity.

[0080] For example, the power distribution assembly can include two power distributors, one of which can be arranged on the upper portion of the drum 11 through the distributor support 12, and the other of which can be arranged on the lower portion of the drum 11 through another distributor support (not shown in the figure), and the two power distributors are respectively connected to a pulse transformer 20 through a waveguide.

[0081] In an exemplary embodiment, as shown in Figure 3 and Figure 3 Each carrier 14 includes two mounting portions 141, which are oppositely arranged on the outer wall of the drum 11 in the x direction. In detail, a carrier portion 142 is arranged between the lower ends of the two mounting portions 141.

[0082] In an exemplary embodiment, as shown in Figure 4 The mounting portion 141 is configured as a substantially "T"-shaped plate structure, the upper end of which with a smaller width can be directly or indirectly mounted on the outer wall of the drum 11 through other connecting members, and the lower end of which with a larger width is used to mount the carrier portion 142. In detail, the carrier portion 142 includes but is not limited to a substantially rectangular plate structure, and the two opposite sides of which are mounted on the mounting portions 141 on the same side, as shown in Figure 3 The upper surface of the carrier portion 142 forms the above-mentioned first mounting surface to carry the pulse transformer 20. In detail, the carrier portion 142 and the mounting portion 141 are connected by riveting, welding, bolting, integral connection or any other connection.

[0083] Figure 3 is Figure 4 A schematic diagram of the adjustment assembly of the exemplary embodiment shown in

[0084] In an exemplary embodiment, the pulse transformer 20 is connected to the power distribution assembly through a waveguide (not shown in the figure), so that the output end of the pulse transformer 20 can output a microwave signal to the power distribution assembly. In detail, the waveguide is suitable for guiding the conduction of the microwave signal to the power distribution assembly.

[0085] In an illustrative embodiment, the waveguide includes, but is not limited to, a hollow metal tube configured to have a circular, square or elliptical cross section. Since the waveguide is rigid, there are precise requirements for the relative positions of the pulse transformer 20 and the power distribution assembly when connecting the pulse transformer 20 to the power distribution assembly through the waveguide. However, when assembling the carrier frame 14 and the drum 11, there are inevitable assembly errors, making it difficult to accurately position the pulse transformer 20 and the power distribution assembly, thereby preventing the pulse transformer 20 and the power distribution assembly from being effectively connected through the waveguide.

[0086] Therefore, according to an embodiment of the present disclosure, the radiation therapy device carrier frame further comprises an adjusting assembly 16, as shown in Figure 3 and Figure 3 The adjusting assembly 16 is arranged between the carrier 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 keep the pulse transformer 20 in the assembled position. In this way, the position of the pulse transformer 20 arranged on the carrier frame 14 can be adjusted by the adjusting assembly 16, for example, adjusted in the x direction and / or the y direction as shown in Figure 4 , so that the distance between the pulse transformer 20 and the power distribution assembly is just suitable for connection through the waveguide.

[0087] According to an embodiment of the present disclosure, as shown in Figure 3 and Figure 4 The adjusting assembly 16 is arranged on the carrier portion 142 and is adapted to translate the pulse transformer 20 in a direction parallel to the first mounting surface and / or approach or move away from the drum 11 in a direction perpendicular to the first mounting surface.

[0088] According to an embodiment of the present disclosure, as shown in Figure 3 and Figure 4 The adjusting assembly 16 comprises a moving plate 161 and a jacking member 163. The moving plate 161 is slidably arranged on the first mounting surface and is adapted to translate in the first direction or the second direction. The jacking member 163 is arranged on the moving plate 161 and abuts against the first mounting surface, and is adapted to adjust the distance between the moving plate 161 and the first mounting surface in the third direction. The pulse transformer 20 is assembled on the moving plate 161 to move synchronously with the moving plate 161.

[0089] According to an embodiment of the present disclosure, as shown in Figure 3 and Figure 3 The adjusting assembly 16 further comprises a limiting member adapted to limit the displacement of the moving plate 161 in the first direction and the second direction, so as to keep the pulse transformer 20 in the assembled position.

[0090] In an illustrative embodiment, as shown in Figure 4 and Figure 3As shown, the adjusting assembly 16 comprises a moving plate 161 connected to the first mounting surface of the bearing part 142 of the bearing frame 14 by the second screw 167. In detail, the two ends of the moving plate 161 along the x direction are integrally provided with two assembly beams 162, which have a larger spacing with the first mounting surface than the moving plate 161 and the first mounting surface, so as to provide the jacking member 163. Figure 4 As shown, the adjusting assembly 16 comprises a moving plate 161 connected to the first mounting surface of the bearing part 142 of the bearing frame 14 by the second screw 167. In detail, the two ends of the moving plate 161 along the x direction are integrally provided with two assembly beams 162, which have a larger spacing with the first mounting surface than the moving plate 161 and the first mounting surface, so as to provide the jacking member 163.

[0091] In an illustrative embodiment, as shown in Figure 3 and Figure 3 As shown, the adjusting assembly 16 comprises a moving plate 161 connected to the first mounting surface of the bearing part 142 of the bearing frame 14 by the second screw 167. In detail, the two ends of the moving plate 161 along the x direction are integrally provided with two assembly beams 162, which have a larger spacing with the first mounting surface than the moving plate 161 and the first mounting surface, so as to provide the jacking member 163.

[0092] For example, the number of jacking members 163 can also be 2, 3, 5, 6 or any other number.

[0093] For example, the jacking members 163 can also be provided at the middle or other positions of the moving plate 161.

[0094] In an illustrative embodiment, as shown in Figure 4 and Figure 3 As shown, the adjusting assembly 16 comprises a moving plate 161 connected to the first mounting surface of the bearing part 142 of the bearing frame 14 by the second screw 167. In detail, the two ends of the moving plate 161 along the x direction are integrally provided with two assembly beams 162, which have a larger spacing with the first mounting surface than the moving plate 161 and the first mounting surface, so as to provide the jacking member 163. Figure 4 As shown, the adjusting assembly 16 comprises a moving plate 161 connected to the first mounting surface of the bearing part 142 of the bearing frame 14 by the second screw 167. In detail, the two ends of the moving plate 161 along the x direction are integrally provided with two assembly beams 162, which have a larger spacing with the first mounting surface than the moving plate 161 and the first mounting surface, so as to provide the jacking member 163.

[0095] In an illustrative embodiment, as shown in Figure 4 and Figure 3 As shown, the adjusting assembly 16 comprises a moving plate 161 connected to the first mounting surface of the bearing part 142 of the bearing frame 14 by the second screw 167. In detail, the two ends of the moving plate 161 along the x direction are integrally provided with two assembly beams 162, which have a larger spacing with the first mounting surface than the moving plate 161 and the first mounting surface, so as to provide the jacking member 163.

[0096] In an illustrative embodiment, as shown in Figure 5and Figure 1 As shown, the limiting member includes a top block 165, a top screw 164 arranged on the top block 165, and the second screw 167. In detail, the top block 165 is arranged in pairs along the x direction and the y direction of the moving plate 161. Further, each top block 165 is threadedly connected with a top screw 164, and the end of each top screw 164 is pressed against the edge of the moving plate 161, so that the position of the moving plate 161 relative to the bearing portion 142 is adjusted and locked by the part of the top screw 164 extending out of the top block 165. Still further, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing. Figure 1 Figure 2 As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing.

[0097] Figure 1 As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing. Figure 2 As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing.

[0098] As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing. Figure 1 and Figure 2 As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing.

[0099] As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing. Figure 5 and Figure 5 As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing.

[0100] As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing. Figure 5 and Figure 5 As shown, the jacking member 163 is connected with the assembly beam 162 by threads, and under the action of friction, has a certain limiting effect in the z direction as shown, but under the action of the centrifugal force of the rotating drum 11, there is still a risk of relative movement. Therefore, in the embodiment of the present disclosure, the moving plate 161 and the bearing portion 142 are further fixed by the second screw 167, so as to maintain the relative spacing. ​

[0101] In an exemplary embodiment, the beam module 31 each comprises a beam module base, a collimation mount and a flange arranged opposite to the collimation mount. Further, the beam module 31 at least comprises a high energy acceleration tube and a V-shaped collimation unit, the high energy acceleration tube is mounted on the beam module base and its output end is located in a cavity formed by the beam module base. The output end of the high energy acceleration tube is provided with a flange to accurately position the high energy acceleration tube and the beam module base, and the V-shaped collimation unit is arranged opposite to the collimation mount. In this way, the charged ions accelerated by the high energy acceleration tube can be accurately emitted after collimation.

[0102] According to an embodiment of the present disclosure, as shown in Figure 5 , the first mounting plate 151 and one side surface of the second mounting plate 152 are coplanarly arranged to form a second mounting surface, and the beam assembly 30 is arranged on the second mounting surface.

[0103] According to an embodiment of the present disclosure, as shown in Figure 5 , the first mounting plate 151 and / or the second mounting plate 152 are configured as a substantially fan-shaped structure.

[0104] According to an embodiment of the present disclosure, as shown in Figure 5 , the first mounting plate 151 and the second mounting plate 152 are provided with different numbers of beam modules 31.

[0105] In an exemplary embodiment, as shown in Figure 5 , the first mounting plate 151 is arranged at the upper end of the drum 11, and the second mounting plate 152 is arranged at the lower end of the drum 11, and the two mounting plates are coplanarly arranged in the plane formed by the y direction and the z direction as shown in Figure 5 . In detail, the first mounting plate 151 and the second mounting plate 152 include but are not limited to a plate-shaped structure configured as a substantially fan-shaped structure. Further, a plurality of through holes are arranged on the first mounting plate 151 and the second mounting plate 152 along the extension direction of the arc, wherein each mounting hole corresponds to one beam module 31 and is suitable for accurately positioning the beam module 31 on the mounting plate in the circumferential direction.

[0106] In an exemplary embodiment, as shown in Figure 5 , the radius of the arc-shaped structure formed by the first mounting plate 151 is configured to be greater than the radius of the arc-shaped structure formed by the second mounting plate 152. In detail, the number of through holes arranged on the first mounting plate 151 is also configured to be greater than the number of through holes arranged on the second mounting plate 152. For example, three through holes can be arranged on the first mounting plate 151, and two through holes can be arranged on the second mounting plate 152, so that more beam modules 31 can be mounted on the first mounting plate 151 than on the second mounting plate 152 in the circumferential direction of the drum 11.

[0107] In an exemplary embodiment, as shown in Figure 5 the first mounting plate 151 includes, but is not limited to, three beam modules 31. Further, the second mounting plate 152 includes, but is not limited to, two beam modules 31. Wherein, the particle beams outputted by each beam module 31 converge on the axis of the drum 11. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0108] For example, according to another embodiment of the present disclosure, not shown in the figure, the first mounting plate 151 and the second mounting plate 152 are provided with the same number of beam modules 31.

[0109] For another example, only the first mounting plate 151 or the second mounting plate 152 is provided with beam modules 31, and the other mounting plate is provided with counterweights.

[0110] Wherein, the positions and the number of the beam modules 31 arranged on the first mounting plate 151 and the second mounting plate 152 should be appropriate to meet the dose requirements of the particle beams required for treatment.

[0111] According to an embodiment of the present disclosure, as shown in Figure 5 the support assembly 13 includes a base 132 and two legs 131. The base 132 is configured as a crowbar structure. The two legs 131 are arranged at opposite ends of the base 132, and the drum 11 is rotatably arranged between the two legs 131.

[0112] In an exemplary embodiment, as shown in Figure 5 the base 132 includes a cross beam and a longitudinal beam, which are sequentially connected to form a crowbar structure. Further, the two legs 131 are oppositely mounted on the two cross beams or longitudinal beams. Further, the first end and the second end of the drum 11 in the axial direction are rotatably assembled on the legs 131. In order to make the rotation of the drum 11 relative to the legs 131 smooth, bearings need to be arranged between the drum 11 and the legs 131. In addition, in order to facilitate the transportation of the radiotherapy device gantry and the ultra-high dose rate radiotherapy device, a lifting ring 133 can also be arranged on the base 132.

[0113] According to an embodiment of the present disclosure, as shown in Figure 5 the radiotherapy device gantry further includes a driving assembly 17. The driving assembly 17 is suitable for driving the drum 11 to rotate around the axis.

[0114] According to an embodiment of the present disclosure, as shown in Figure 5 the driving assembly 17 includes a ring gear 171 and a driving part 172. The ring gear 171 is coaxially arranged on the outer wall of the first end of the drum 11. The driving part 172 and the ring gear 171 are in transmission connection, and are suitable for outputting torque to the ring gear 171.

[0115] According to an embodiment of the present disclosure, as shown in Figure 5 The gantry for radiotherapy device further comprises a brake assembly. The brake assembly is suitable for limiting further rotation of the drum 11.

[0116] In an illustrative embodiment, as shown in Figure 5 The driving part comprises a motor, a coupling and a speed reducer, and the brake assembly comprises an electromagnetic brake. The output shaft of the motor is connected to the electromagnetic brake and the speed reducer through the coupling. The output end of the speed reducer is connected to a pinion gear arranged on the support leg 131 through a synchronous belt, and the pinion gear is engaged with an annular gear 171 arranged on the drum 11 to drive the drum 11 to rotate around the axis. The synchronous belt is further provided with a tensioning device to maintain the stability of the driving process. In addition, the synchronous belt driving is beneficial to reduce noise and improve transmission efficiency compared with chain driving, so as to meet the design requirements of the ultra-high dose rate radiotherapy device. Further, the gantry for radiotherapy device 10 can be further provided 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, which includes but is not limited to ±180°.

[0117] According to an embodiment of the present disclosure, as shown in Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 Figure 5 The gantry for radiotherapy device further comprises a detection assembly 18. The detection assembly 18 is suitable for detecting the rotation speed and / or the circumferential position of the drum 11.

[0118] In an illustrative embodiment, the detection assembly 18 comprises but is not limited to an encoder. In detail, the encoder is arranged on one support leg 131. Further, a code disc suitable for being detected by the support leg 131 is arranged on the outer wall of the drum 11 to detect the rotation angle of the drum 11 in real time.

[0119] The present disclosure further provides a radiotherapy device comprising a gantry for radiotherapy device, a beam assembly and a power distribution assembly. The beam assembly and the power distribution assembly are arranged on the drum of the gantry for radiotherapy device to rotate synchronously with the drum.

[0120] It should be further noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right" and the like, are only with reference to the drawings and are not intended to limit the protection scope of the present disclosure. Throughout the drawings, the same elements are denoted by the same or similar reference numerals. When the conventional structures or configurations may cause confusion to the understanding of the present disclosure, they will be omitted.

[0121] The above describes embodiments of the present disclosure. However, these embodiments are merely for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although each embodiment is described above separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Those skilled in the art can make various substitutions and modifications without departing from the scope of the present disclosure, and these substitutions and modifications should all fall within the scope of the present disclosure.

Claims

1. A gantry for a radiotherapy apparatus, characterized in that The application relates to a supporting assembly, a roller configured in a horizontal structure and having an axial first end and a second end rotatably arranged on the supporting assembly, and a carrier arranged on the outer wall of the first end and adapted to carry an external pulse transformer so that the pulse transformer rotates synchronously with the roller. The roller is also adapted to mount an external beam assembly and a power distribution assembly so that the beam assembly and the power distribution assembly rotate synchronously with the roller. The beam assembly is arranged on the outer side of the second end, and the power distribution assembly is arranged on the outer wall of the part of the roller between the first end and the second end. The application further relates to an adjusting assembly arranged between the carrier and the pulse transformer and adapted to adjust the position of the pulse transformer relative to the power distribution assembly and keep the pulse transformer in an assembled position. The carrier comprises a mounting part arranged on the outer wall of the roller and extending outward in the radial direction of the roller, and a carrier part arranged on the end of the mounting part away from the roller and forming a first mounting surface parallel to the axis of the roller. The adjusting assembly is arranged on the carrier part and adapted to translate the pulse transformer in a direction parallel to the first mounting surface and / or approach or move away from the roller in a direction perpendicular to the first mounting surface. The adjusting assembly comprises a moving plate slidably arranged on the first mounting surface and adapted to translate in a first direction or a second direction, and a jacking member arranged on the moving plate and abutting against the first mounting surface and adapted to adjust the distance between the moving plate and the first mounting surface in a third direction. The pulse transformer is assembled on the moving plate to move synchronously with the moving plate. The adjusting assembly further comprises a limiting member adapted to limit the displacement of the moving plate in the first direction and the second direction so that the pulse transformer is kept in the assembled position. The application further relates to a mounting plate arranged on the outer wall of the second end of the roller and extending outward in the radial direction of the roller. The beam assembly is arranged on the mounting plate. The application relates to a first mounting plate arranged on the first side of the second end and a second mounting plate arranged on the second side of the second end opposite to the first side. The beam assembly comprises a plurality of beam modules, a part of the beam modules being arranged on the first mounting plate and another part of the beam modules being arranged on the second mounting plate. The output ends of the beam modules all face the axis of the roller so that the particle beams output by each of the beam modules converge on a point on the axis of the roller. The first mounting plate and the second mounting plate are arranged in a plane with one side surface of the first mounting plate and the second mounting plate to form a second mounting surface, and the beam assembly is arranged on the second mounting surface. The first mounting plate and / or the second mounting plate are configured in a fan-shaped structure.

2. The rack of claim 1, wherein, The first mounting plate and the second mounting plate are provided with different numbers of beam modules.

3. The rack of claim 1, wherein, The first mounting plate and the second mounting plate are provided with the same number of beam modules. ​ 4. The rack of claim 3, wherein, ​ ​ ​ ​ ​ ​ 5. The rack of claim 4, wherein, ​ 6. The rack of claim 4, wherein, ​ 7. The rack of claim 4, wherein, ​ 8. The rack of claim 4, wherein, ​ 9. The rack of any one of claims 1 to 8, wherein, The support assembly comprises: a base configured as a crowbar structure; and two legs arranged at two opposite ends of the base, and the drum is rotatably arranged between the two legs.

10. The rack of any one of claims 1 to 8, wherein, Further comprising a driving assembly adapted to drive the drum to rotate around an axis.

11. The rack of claim 10, 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.

12. The rack of any one of claims 1 to 8, wherein, Further comprising a detection assembly adapted to detect the rotational speed and / or circumferential position of the drum.

13. The rack of any one of claims 1 to 8, wherein, Further comprising a braking assembly adapted to limit further rotation of the drum.

14. A radiotherapy device, characterized in that, The radiation therapy device comprises: a rack as claimed in any one of claims 1 to 13; a beam assembly and a power distribution assembly; wherein the beam assembly and the power distribution assembly are arranged on the drum of the rack of the radiation therapy device to rotate synchronously with the drum.

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