A compact, multi-chamber, multi-angle ion therapy device

Abstract

This invention relates to a compact, multi-chamber, multi-angle ion therapy device, comprising a dual-rotating gantry beam distribution system, including a coaxially arranged front rotating gantry and a rear rotating gantry. A front rotating beamline is mounted on the front rotating gantry, and a rear rotating beamline is mounted on the rear rotating gantry. The rear rotating beamline includes two integrated but independently distributed L-shaped and U-shaped rotating beamlines, with the U-shaped beamline forming a spatial confocal relationship with the front rotating beamline. A first row of treatment chambers includes several treatment chambers evenly arranged along the circumferential direction of the front rotating beamline, each treatment chamber having an X-ray aperture. A second row of treatment chambers also includes several treatment chambers evenly arranged along the circumferential direction of the L-shaped rotating beamline, each treatment chamber having an X-ray aperture. Several treatment heads are also included, each corresponding to a treatment chamber in the first row and a treatment chamber in the second row.

Description

Technical Field

[0001] This invention relates to a compact, multi-chamber, multi-angle ion therapy device, belonging to the technical field of radiotherapy equipment. Background Technology

[0002] Radiation therapy for cancer is a very popular technique. Because ion beams have an inverted depth-dose distribution and a high relative biological effect when irradiating living organisms, they can kill tumor cells while better avoiding damage to normal cells, making ion therapy an advanced and effective cancer radiation treatment method internationally. However, traditional ion therapy devices, such as proton or carbon ion therapy systems, typically rely on large accelerators and complex beam transmission systems, resulting in bulky equipment, large floor space requirements, and high construction and maintenance costs. These devices typically occupy at least 1000 square meters, greatly limiting their widespread application in small and medium-sized medical institutions.

[0003] Currently, conventional ion therapy devices typically have beam lengths exceeding 100 meters and require multiple diode deflection magnets, quadrupole magnets, and energy selection systems. This not only increases beam transmission loss but also complicates treatment room design. Furthermore, traditional devices often employ a single horizontal beam or a fixed beam pattern with limited angles, requiring patients to be in a supine position for treatment. This reduces treatment flexibility and limits the optimal irradiation angle selection for tumors in specific locations, such as the head and neck, and spine. In addition, multiple treatment rooms in existing systems often mean higher infrastructure costs and more complex radiation shielding requirements. Large-scale equipment places extremely high demands on site load-bearing capacity, radiation shielding, and infrastructure adaptability, further increasing overall construction costs and significantly reducing the overall system's economics and accessibility. Therefore, there is an urgent need to design a lightweight ion therapy system with a compact beam, significantly shortened length, small footprint, multiple treatment rooms, full treatment angle coverage, and overall lightweight design. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a compact, multi-chamber, multi-angle ion therapy device. By optimizing the overall system layout and innovating a multi-angle, multi-treatment-chamber solution, it achieves an overall improvement in treatment efficiency and space utilization, enhances the system's cost-effectiveness, facilitates widespread adoption, and benefits the general public.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A compact, multi-chamber, multi-angle ion therapy device, comprising: A dual rotating gantry beam distribution system includes a front rotating gantry and a rear rotating gantry arranged coaxially. A front rotating beamline is provided on the front rotating gantry, and a rear rotating beamline is provided on the rear rotating gantry. The rear rotating beamline includes two integrated but independently distributed L-shaped rotating beamlines and a U-shaped rotating beamline. The U-shaped rotating beamline forms a spatial confocal relationship with the front rotating beamline. The first row of treatment rooms includes several treatment rooms that are evenly arranged along the circumferential direction of the front rotating beam line to form the first row of treatment rooms. Each treatment room has a ray hole on its wall. The second row of treatment rooms also includes several treatment rooms, which are evenly arranged along the circumferential direction of the L-shaped rotating beam line to form the second row of treatment rooms. Each treatment room has a ray hole on its wall. A number of treatment heads are provided, each corresponding to a number of treatment chambers in the first row of treatment chambers and a number of treatment chambers in the second row of treatment chambers. The treatment heads pass through the ray hole to receive the ion beams transmitted by the front rotating beamline and the rear rotating beamline and irradiate the patient or sample. The drive mechanism is connected to the front rotating frame and the rear rotating frame for driving the front rotating frame and the rear rotating frame to rotate 0-360 degrees, thereby making the front rotating wire and the rear rotating wire into wires that can rotate 0-360 degrees.

[0006] Preferably, in the compact, multi-chamber, multi-angle ion therapy device, the front rotating gantry includes a front rotating gantry main frame, with a front rotating gantry drive mechanism and a front rotating gantry auxiliary support mechanism provided at both ends of the front rotating gantry main frame. The front rotating beamline is disposed within the front rotating gantry main frame and is dynamically connected to the fixed beamline generated by the beam transmission system through a corrugated tube.

[0007] Preferably, in the compact, multi-chamber, multi-angle ion therapy device, the rear rotating frame includes the L-shaped rotating beam and the U-shaped rotating beam, both of which are mounted on the main truss of the rear rotating frame. The main truss of the rear rotating frame is mounted on the rear rotating frame drive mechanism and the rear rotating frame auxiliary support mechanism.

[0008] Preferably, in the compact, multi-chamber, multi-angle ion therapy device, one end of the U-shaped rotating beamline is dynamically connected to a branch of the front rotating beamline through the corrugated tube, and the other end forms a spatial confocal relationship with the front rotating beamline.

[0009] Preferably, in the compact, multi-chamber, multi-angle ion therapy device, both the front rotating frame drive mechanism and the rear rotating frame drive mechanism adopt a pin gear transmission mechanism. The pin gear transmission mechanism includes a support frame and a pin gear, a motor, and a cycloidal gear disposed on the support frame. The pin gear and the cycloidal gear mesh with each other, and the motor is used to drive the cycloidal gear.

[0010] Preferably, in the compact, multi-chamber, multi-angle ion therapy device, the ion beam input and output ends of the front rotating beamline, the L-shaped rotating beamline, and the U-shaped rotating beamline are all equipped with an anti-dispersion structure. The anti-dispersion structure includes two diode magnets and a quadrupole magnet located between the two diode magnets. The rotation point where the anti-dispersion structure is located satisfies the following condition: α x =α y =0, where α=0 is the position of the waist, that is, the position of the minimum envelope; x and y are the x-axis and y-axis of the two-dimensional plane.

[0011] Preferably, the first row of treatment chambers and the second row of treatment chambers adopt a semi-circular spatial layout, that is, the treatment chambers are distributed in a semi-circular shape along the vertical direction with the rotation axis as the center.

[0012] Preferably, the compact, multi-chamber, multi-angle ion therapy device has two treatment heads in the first row of treatment chambers, namely a front rotating gantry treatment head and a rear rotating gantry A treatment head, to achieve dual-angle irradiation.

[0013] Preferably, the compact, multi-chamber, multi-angle ion therapy device has an angled treatment head, namely the rear rotating frame B treatment head, in the treatment chamber of the second row of treatment chambers.

[0014] Preferably, in the compact, multi-chamber, multi-angle ion therapy device, a first vacuum membrane window is fitted on the flange of the ion beam output end of the front rotating beamline, the L-shaped rotating beamline, and the U-shaped rotating beamline, and a second vacuum membrane window is fitted on the receiving flange of the treatment head. The first and second vacuum membrane windows are used to achieve a vacuum seal between the front rotating beamline, the L-shaped rotating beamline, the U-shaped rotating beamline, and the treatment head.

[0015] The present invention has the following advantages due to the adoption of the above technical solutions: 1. This invention utilizes a dual-path combination of an L-shaped beam transmission device and a U-shaped beam transmission device to achieve dual-angle irradiation within a treatment room through a coordinated beam rotation distribution system. By rotating the distribution, typical angle combinations of horizontal + 45 degrees and horizontal + vertical are achieved. Compared with conventional fixed beamline dual-angle schemes, this invention significantly shortens the beamline length, increases equipment utilization, and simplifies the building structure.

[0016] 2. The innovative L-shaped + U-shaped combined rotating beam proposed in this invention breaks the limitation of the traditional single 90-degree rotation scheme with a single treatment angle, so that the system can realize multiple combinations of multiple treatment rooms, multiple angles in different treatment rooms, and dual angles in the same treatment room with a simple mechanical structure.

[0017] 3. The beamline design of this invention adopts a special optical design, namely, setting an anti-dispersion structure at the beam input end, the beam output end, and the beam output end of the front rotating beamline. When the beamline rotates at different angles, the beam at the beam input end and the beam output end maintains the same shape, and the beam is a circular beam spot in real space, ensuring the quality of the beam.

[0018] 4. This invention is equipped with multiple treatment rooms. The design employs an L-shaped and U-shaped dual-path independent beam rotation distribution system. These two rotation distribution systems enable up to 10 treatment rooms, significantly improving beam utilization and doubling the number of treatment rooms compared to traditional fixed beamlines. The multi-angle, multi-treatment-room system of this invention supports rapid switching between various modes, including independent treatment in a single treatment room and coordinated irradiation treatment in multiple treatment rooms, optimizing treatment and preparation plans and improving treatment efficiency.

[0019] 5. This invention adopts a modular parallel architecture, which enables flexible expansion of the number of treatment rooms through the linear cascading of rotating rack units. This design breaks through the space limitations of traditional equipment, supports medical institutions to flexibly configure the treatment scale according to actual needs, and provides a scalable solution for the large-scale application of ion therapy systems.

[0020] 6. This invention, through innovative design of accelerator layout and treatment terminal beam distribution, breaks away from conventional fixed beamline and rotating gantry distribution technologies, overcoming the problems of large footprint, low distribution efficiency, and high construction cost of traditional ion therapy devices.

[0021] 7. This invention is applicable not only to light ions (helium), but also to protons and heavy ions, making it a universal technical solution. Attached Figure Description

[0022] Figure 1 The overall layout diagram of the compact, multi-chamber, multi-angle ion therapy device provided by the present invention; Figure 2 A schematic diagram of the beam transmission system provided by the present invention; Figure 3 A top view of the overall layout of the treatment device provided by the present invention; Figure 4 A partially enlarged view of the dual-angle irradiation in the treatment room provided by the present invention; Figure 5 A schematic diagram of the front rotating frame provided by the present invention; Figure 6 A schematic diagram of the rear rotating frame provided by the present invention; Figure 7 This is a schematic diagram of the front and rear rotating frame drive mechanism provided by the present invention; Figure 8 This is a schematic diagram of the treatment chamber for the first row of dual-angle treatment heads provided by the present invention; Figure 9 This is a schematic diagram of the treatment chamber for the second row of single-angle treatment heads provided by the present invention; Figure 10 These are the bundle Twiss parameter-β function and dispersion function diagrams provided by this invention; Figure 11 This is the Twiss parameter-α function diagram of the bundle provided by the present invention; The attached figures are labeled as follows: 1-Beam transmission system; 2-Front rotating gantry; 3-Rear rotating gantry; 4-Auxiliary supporting system; 5-Treatment room; 6-Recumbent treatment bed; 7-Sitting treatment bed; 8-Power supply room; 9-ECR ion source; 10-Linear accelerator; 11-Beam injection line; 12-Circular synchrotron; 13-High-energy beam transmission line; 14-Injection cutting iron; 15-Extraction cutting iron; 16-Rear rotating gantry drive mechanism; 17-Rear rotating gantry auxiliary support mechanism; 18-Front rotating gantry drive mechanism; 19-Front rotating gantry auxiliary support mechanism; 20-Front rotating gantry treatment head; 21 - Rear rotating gantry A treatment head; 22 - Rear rotating gantry B treatment head; 23 - Rotation axis; 24 - L-shaped rotating cable; 25 - U-shaped rotating cable; 26 - Rear rotating gantry main truss; 27 - Corrugated pipe; 28 - 45° deflection dipole magnet; 29 - Rear rotating gantry counterweight; 30 - Front rotating gantry main frame; 31 - Quadrupole magnet; 32 - Terminal scanning iron; 33 - Pin gear; 34 - Support gantry; 35 - Motor; 36 - Cycloidal gear; 37-41 - First row, first to fifth dual-angle treatment chambers; 42-46 - Second row, first to fifth single-angle treatment chambers; A - Simultaneous dual-angle irradiation; B - Single-angle irradiation. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention are described clearly and completely below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," "third," "fourth," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0025] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "above," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure.

[0026] Currently, conventional ion therapy devices typically have beam lengths exceeding 100 meters and require multiple diode deflection magnets, quadrupole magnets, and energy selection systems. This not only increases beam transmission loss but also complicates treatment room design. Furthermore, traditional devices often employ a single horizontal beam or a fixed beam pattern with limited angles, requiring patients to be in a supine position for treatment. This reduces treatment flexibility and limits the optimal irradiation angle selection for tumors in specific locations, such as the head and neck, and spine. In addition, multiple treatment rooms in existing systems often mean higher infrastructure costs and more complex radiation shielding requirements. Large-scale equipment places extremely high demands on site load-bearing capacity, radiation shielding, and infrastructure adaptability, further increasing overall construction costs and significantly reducing the overall system's economics and accessibility. Therefore, there is an urgent need to design a lightweight ion therapy system with a compact beam, significantly shortened length, small footprint, multiple treatment rooms, full treatment angle coverage, and overall lightweight design.

[0027] Based on the above-mentioned technical problems, the present invention provides a compact, multi-chamber, multi-angle ion therapy device, which innovatively integrates an ultra-short beam transmission system, a multi-degree-of-freedom treatment head, a high-density treatment chamber, and a sitting and lying dual-mode treatment platform, suitable for precision radiotherapy of tumors.

[0028] like Figure 1 As shown, the compact, multi-chamber, multi-angle ion therapy device of the present invention includes: The system includes a beam delivery system 1, a dual rotating gantry beam distribution system (including a front rotating gantry 2 and a rear rotating gantry 3), an auxiliary system 4, and a treatment room system.

[0029] like Figure 2 As shown, this is the beam delivery system 1 of the present invention, including an ECR ion source 9, a linear accelerator 10, a beam injection line 11, a ring synchrotron 12, and a high-energy transmission line 13. The ECR ion source 9 generates a stable charged particle beam through plasma discharge. This beam first enters the linear accelerator 10 for preliminary acceleration. After linear acceleration, the particle beam passes through the beam injection line 11 and is guided by the injection cutting iron 14 to enter the ring synchrotron 12 at a set incident angle. In the ring synchrotron 12, the particle beam gradually increases its energy through a high-frequency acceleration system until it reaches the beam intensity required for treatment. The accelerated, high-intensity beam is extracted by the extraction cutting iron 15 and injected into the high-energy transmission line 13. Then, the beam is delivered to the multi-angle treatment head rotating beam extraction mechanism, and then the front rotating gantry 2 and the rear rotating gantry 3 precisely distribute the beam to the terminals of each treatment chamber.

[0030] like Figure 3-4As shown, it is a dual-rotating gantry beam distribution system, including a front rotating gantry 2, a rear rotating gantry 3, a front rotating gantry drive mechanism 18 and a front rotating gantry auxiliary support mechanism 19 that drive the front rotating gantry 2 to rotate along the rotation axis 23, and a rear rotating gantry auxiliary support mechanism 17 and a rear rotating gantry drive mechanism 16 that drive the rear rotating gantry 3 to rotate along the rotation axis 23. Driven by the front rotating gantry drive mechanism 18, the front rotating gantry 2 rotates 360 degrees along a circular track, allowing the beam to be flexibly distributed to the radially arranged treatment chambers 5 along the circular track. Through the coordinated operation of the rotation positioning of the front rotating gantry 2 and the angle adjustment mechanism of the front rotating gantry treatment head 20, stable beam extraction paths can be formed in the 0° (horizontal), 45° (tilted), and 90° (vertical) directions respectively. The rear rotating gantry 3 integrates two independent beamlines, wherein the rear rotating gantry B treatment head 22 achieves independent multi-angle (0°) beamlines through the L-shaped rotating beamline 24. The treatment function ( / 45° / 90°) allows the rear rotating gantry A treatment head 21 to form a spatial confocal relationship with the front rotating beamline of the front rotating gantry 2 through the U-shaped rotating beamline 25. In this way, the 0° (horizontal), 45° (tilted), and 90° (vertical) angles formed by the front rotating gantry treatment head 20 can be paired with the vertical beam provided by the rear rotating gantry A treatment head 21 to form a combination of horizontal + 45° and horizontal + vertical treatment angles. This enables the treatment chamber 5 to achieve dual-angle synergistic irradiation therapy and realize multiple combinations of multiple treatment chambers, multiple angles in different treatment chambers, and dual angles in the same treatment chamber.

[0031] The dual-rotating gantry beam distribution system of the present invention adopts an innovative collaborative design of front and rear dual rotating gantry. The front rotating gantry 2 drives the front rotating gantry treatment head 20 through a pin tooth mechanism to achieve precise independent positioning of three treatment angles: horizontal, 45° tilt, and vertical. The rear rotating gantry 3 adopts an integrated dual treatment head combination design, with two sets of treatment heads with independent multi-angle adjustment functions corresponding to the L-shaped straight path and the U-shaped return path, respectively. The two beam transmission lines are fixed on the main truss 26 of the rear rotating gantry, and then the drive system realizes the overall rotation. During operation, the rear rotating gantry 3 rotates as a whole to change the spatial orientation of the two treatment heads. The L-shaped path treatment head (rear rotating gantry B treatment head 22) can also achieve multi-angle (0°, 45°, 90°) non-coplanar irradiation by combining its own angle switching function. The U-shaped path treatment head (rear rotating gantry A treatment head 21) achieves typical angle combinations of horizontal + 45 degrees and horizontal + vertical by rotating and distributing through the fixed confocal geometry relationship with the front rotating gantry treatment head 20. With the cooperation of the two rotating gantry, dual-angle synchronous irradiation treatment can be achieved in the same treatment room, so that the device can perform single-angle irradiation and dual-angle synchronous irradiation during treatment, providing a variety of irradiation treatment plan options.

[0032] Furthermore, such as Figure 5As shown, the specific structure of the front rotating gantry 2 includes a front rotating gantry drive mechanism 18, a front rotating gantry auxiliary support mechanism 19, a front rotating gantry main frame 30, and a built-in front rotating beamline. The beam generated by the beam transmission system 1 is formed into a fixed beamline through the high-energy beam transmission line 13. The fixed beamline is dynamically connected to the front rotating beamline through a corrugated pipe 27. That is, the two ends of the corrugated pipe 27 are connected to the vacuum flanges of the fixed beamline and the front rotating beamline, respectively. The front rotating beamline consists of multiple quadrupole magnets 31, 45° deflection dipole magnets 28, a vacuum pipe, and a scanning iron 32 for precise three-dimensional spatial scanning irradiation at the treatment terminal.

[0033] Furthermore, such as Figure 6 As shown, the specific structure of the rear rotating gantry 3 includes a rear rotating gantry drive mechanism 16, a rear rotating gantry auxiliary support mechanism 17, a rear rotating gantry main truss 26, and built-in rear rotating beamlines. The rear rotating main truss 26 innovatively integrates two sets of beam distribution independent beam transmission paths: an L-shaped rotating beamline 24 and a U-shaped rotating beamline 25. The L-shaped rotating beamline 24 forms an independent beam channel, supporting the treatment head to achieve multi-angle (0° / 45° / 90°) irradiation. The U-shaped rotating beamline 25, through a unique U-shaped folding beam path design, forms a spatial confocal geometric relationship with the beam of the front rotating gantry 2. Both sets of transmission lines are integrated in the same rotating gantry (rear rotating gantry main truss 26), and can achieve overall synchronous rotation under the drive of the transmission mechanism, thereby enabling the rear rotating gantry 3 to have independent treatment capabilities and support dual-angle irradiation in conjunction with the front rotating gantry 2.

[0034] Furthermore, the front rotating beamline, L-shaped rotating beamline 24, and U-shaped rotating beamline 25 are isotropic rotating beamline designs. The ion beam input and output ends of all three beamlines are equipped with anti-dispersion structures. These anti-dispersion structures include two diode magnets and a quadrupole magnet located between the two diode magnets. The rotation point where the anti-dispersion structure is located satisfies the following condition: α x =α y =0, where α=0 is the position of the beam waist, i.e., the position with the smallest envelope; x and y are the x-axis and y-axis of the two-dimensional plane. The front rotating beamline, L-shaped rotating beamline 24 and U-shaped rotating beamline 25 all adopt special optical design (adding an achromatic structure) to keep the beam spot circular in real space (real space is two-dimensional space) before and after rotation and at the terminal target point. Under this special optical design, the beam at the ion input end and the position of the three output ends of the front rotating beamline maintain the same shape when the beamline rotates at different angles.

[0035] like Figure 10 , 11As shown, the beamline β function characterizes the amplitude of beam oscillations in the horizontal and vertical directions, and the beam's transverse dimension is positively correlated with the β function. The α function is the negative half of the derivative of the β function, characterizing the rate of change of the beam dimension with respect to the beam's propagation direction. The position where α=0 in the drift segment is the beam waist, where the beam dimension is locally minimum and remains essentially constant.

[0036] Furthermore, such as Figure 7 As shown, both the front rotating frame drive mechanism 18 and the rear rotating frame drive mechanism 16 adopt a pin-gear transmission scheme, including a pin gear 33, a support frame 34, a motor 35, and a cycloidal gear 36. The core of the design is the mating structure of the cycloidal gear 36 and the pin gear 33 of the pin shaft slewing bearing. This design features high transmission accuracy, smooth operation, and low noise. It can automatically adjust the clearance during operation, support rapid response and dynamic control, and help maintain the stability of the system during long-term operation.

[0037] like Figure 8 , 9 As shown, this is the layout of the treatment room. Treatment room 5 adopts an innovative semi-circular spatial layout, with five independent treatment rooms 5 distributed in a semi-circle along the vertical direction, forming a radial and uniform arrangement with the beam transmission system 1 as the center, forming the first row of treatment rooms and the second row of treatment rooms. Each row of treatment rooms includes several independent treatment rooms 5. Each treatment room 5 has a ray hole on its wall. This layout ensures that each treatment room 5 maintains the optimal transmission distance from the beam outlet, optimizing the space utilization of the treatment room 5. Radiation shielding walls are set between adjacent treatment rooms 5, so that the space of each treatment room 5 remains relatively independent, controlling the dose of each scattered radiation to be below the corresponding dose standard.

[0038] Furthermore, such as Figure 8 , 9 As shown, the first row of treatment terminals has five treatment chambers 5, namely the first to fifth dual-angle treatment chambers 37-41 in the first row. Each treatment chamber 5 contains two treatment heads with two angles: a front rotating gantry treatment head 20 and a rear rotating gantry A treatment head 21. The second row of treatment terminals also has five treatment chambers 5, namely the first to fifth single-angle treatment chambers 42-46 in the second row. Each treatment chamber 5 contains a single-angle treatment head, namely the rear rotating gantry B treatment head 22. The rotating beam and each treatment head are connected without contact through a vacuum membrane window. Of course, the dual rotating gantry mode allows medical institutions to gradually add parallel dual rotating gantry beam distribution systems according to clinical needs, enabling unlimited expansion of the number of treatment chamber layers.

[0039] The treatment room system of this invention adopts a scalable modular ring layout. Simultaneously, through a dual-rotating gantry beam distribution system, the number of treatment rooms can be doubled without increasing the number of beamlines, significantly shortening patient preparation time before irradiation and post-irradiation dose decay waiting time, thus improving treatment efficiency. It greatly enhances the geometric freedom and clinical adaptability of treatment within a compact space. When multiple gantry systems are deployed in parallel cascade, each system can independently serve different treatment rooms, achieving parallel and efficient treatment for multiple patients. When two systems are combined, multi-treatment room, multi-angle irradiation can be achieved, allowing multi-angle irradiation to be completed within the same treatment room, reducing patient transfer time. Furthermore, its modular and parallel-expandable characteristics enable medical institutions to flexibly configure the number of treatment rooms according to clinical needs and infrastructure conditions, thereby almost infinitely expanding treatment throughput within the limits of physical space and beam resources. Each treatment room is equipped with a treatment bed adjustable for both sitting and lying positions, accommodating the treatment needs of tumors in different body parts.

[0040] The auxiliary system 4 of this invention mainly includes a control system, an equipment support system, and a safety monitoring system. The control system mainly performs closed-loop control on key equipment such as the ECR ion source 9, linear accelerator 10, transmission line, and treatment terminal to ensure that the beam parameters can be adjusted as needed and output stably. The equipment support system provides a stable and reliable operating environment for the treatment device. The safety monitoring system monitors the radiation dose and equipment operating status during the treatment process through sensors and has fault warning and linkage protection functions.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A compact, multi-chamber, multi-angle ion therapy device, characterized in that, include: A dual rotating gantry beam distribution system includes a front rotating gantry (2) and a rear rotating gantry (3) arranged coaxially. A front rotating beamline is provided on the front rotating gantry (2), and a rear rotating beamline is provided on the rear rotating gantry (3). The rear rotating beamline includes two integrated but independently distributed L-shaped rotating beamlines (24) and U-shaped rotating beamlines (25). The U-shaped rotating beamline (25) forms a spatial confocal relationship with the front rotating beamline. The first row of treatment rooms includes several treatment rooms (5). The several treatment rooms (5) are evenly arranged along the circumferential direction of the front rotating beam line to form the first row of treatment rooms. Each treatment room (5) has a ray hole on its wall. The second row of treatment rooms also includes several treatment rooms (5). The several treatment rooms (5) are evenly arranged along the circumferential direction of the L-shaped rotating beam line to form the second row of treatment rooms. Each treatment room (5) has a ray hole on its wall. A number of treatment heads are provided, and the treatment heads are respectively set one-to-one with the treatment chambers (5) in the first row of treatment rooms and the treatment chambers (5) in the second row of treatment rooms. The treatment heads pass through the ray hole to receive the ion beams transmitted by the front rotating beamline and the rear rotating beamline and irradiate the patient or sample. The drive mechanism is connected to the front rotating frame (2) and the rear rotating frame (3) for driving the front rotating frame (2) and the rear rotating frame (3) to rotate 0-360 degrees, thereby making the front rotating wire and the rear rotating wire into wires that can rotate 0-360 degrees.

2. The compact, multi-chamber, multi-angle ion therapy device according to claim 1, characterized in that, The front rotating frame (2) includes a front rotating frame main frame (30), and a front rotating frame drive mechanism (18) and a front rotating frame auxiliary support mechanism (19) are provided at both ends of the front rotating frame main frame (30). The front rotating beam is located inside the front rotating frame main frame (30), and the front rotating beam is dynamically connected to the fixed beam generated by the beam transmission system (1) through a corrugated pipe (27).

3. The compact, multi-chamber, multi-angle ion therapy device according to claim 2, characterized in that, The rear rotating frame (3) includes the L-shaped rotating cable (24) and the U-shaped rotating cable (25), both of which are mounted on the main truss (26) of the rear rotating frame. The main truss (26) of the rear rotating frame is mounted on the rear rotating frame drive mechanism (16) and the rear rotating frame auxiliary support mechanism (17).

4. The compact, multi-chamber, multi-angle ion therapy device according to claim 3, characterized in that, One end of the U-shaped rotating beamline (25) is dynamically connected to a branch of the front rotating beamline through the bellows (27), and the other end forms a spatial confocal relationship with the front rotating beamline.

5. The compact, multi-chamber, multi-angle ion therapy device according to claim 4, characterized in that, Both the front rotating frame drive mechanism (18) and the rear rotating frame drive mechanism (16) adopt a pin gear transmission mechanism. The pin gear transmission mechanism includes a support frame (34) and a pin gear (33), a motor (35) and a cycloidal gear (36) disposed on the support frame (34). The pin gear (33) and the cycloidal gear (36) mesh with each other, and the motor (35) is used to drive the cycloidal gear (36).

6. The compact, multi-chamber, multi-angle ion therapy device according to claim 1, characterized in that, The ion beam input and output ends of the front rotating beamline, the L-shaped rotating beamline (24), and the U-shaped rotating beamline (25) are all provided with an anti-dispersion structure. The anti-dispersion structure includes two dipole magnets and a quadrupole magnet located between the two dipole magnets. The rotation point where the anti-dispersion structure is located satisfies the following condition: α x =α y =0, where α is the position of the waist, i.e. the position of the minimum envelope; x and y are the x-axis and y-axis of the two-dimensional plane.

7. The compact, multi-chamber, multi-angle ion therapy device according to claim 1, characterized in that, The first row of treatment rooms and the second row of treatment rooms adopt a semi-circular spatial layout, that is, several treatment rooms (5) are distributed in a semi-circular manner along the vertical direction with the rotation axis (23) as the center.

8. The compact, multi-chamber, multi-angle ion therapy device according to claim 1, characterized in that, The treatment room (5) in the first row of treatment rooms is equipped with two treatment heads at different angles, namely the front rotating gantry treatment head (20) and the rear rotating gantry A treatment head (21), so as to achieve dual-angle irradiation.

9. The compact, multi-chamber, multi-angle ion therapy device according to claim 1, characterized in that, A treatment head with an angle, namely the rear rotating gantry B treatment head (22), is provided in the treatment room (5) of the second row of treatment rooms.

10. The compact, multi-chamber, multi-angle ion therapy device according to claim 1, characterized in that, The flanges at the ion beam output ends of the front rotating beamline, the L-shaped rotating beamline (24), and the U-shaped rotating beamline (25) are all equipped with a first vacuum membrane window, and the flange at the receiving end of the treatment head is equipped with a second vacuum membrane window. The first vacuum membrane window and the second vacuum membrane window are used to achieve a vacuum seal between the front rotating beamline, the L-shaped rotating beamline (24), the U-shaped rotating beamline (25), and the treatment head.

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