Multi-chamber single-treatment-head proton heavy ion treatment system capable of performing multi-angle treatment

Abstract

The invention provides a multi-chamber single-treatment-head proton heavy ion treatment system capable of performing multi-angle treatment, which comprises a proton / heavy ion accelerator, a proton / heavy ion beam transport system, a rotary switching rack, a treatment head and a multi-treatment-room structure, and is characterized in that the proton / heavy ion accelerator, the proton / heavy ion beam transport system and the treatment head are sequentially connected together; the proton / heavy ion beam transport system is fixed in the rotary switching rack, and the treatment head is fixed on one side of the outer part of the rotary switching rack; the rotary switching rack is located in the center of the multi-treatment-room structure and surrounded by the multiple treatment rooms. According to the invention, the tubular rotary switching rack is utilized to convey proton / heavy ion beams deflected by 90 degrees to different treatment rooms at any angle; one proton / heavy ion accelerator is matched with a plurality of treatment rooms, only one set of beam transport system is needed, the system is very short and small, the plurality of treatment rooms share one treatment head, and the whole set of system can provide irradiation treatment at multiple angles of 0-360 degrees.

Description

Technical Field

[0001] The present application relates to the field of radiotherapy systems, and in particular to the field of proton and heavy ion therapy systems capable of performing multi-angle treatment. Background Art

[0002] At present, the demand for tumor and cancer treatment in my country is increasing year by year. Among many treatment methods, proton or heavy ion treatment has more advantages than X-ray or gamma ray treatment due to its unique "Bragg peak" biological effect. This is mainly because the proton / heavy ion beam will not have too much negative effect on healthy tissues before and after reaching the designated location during the process of penetrating the human body; only when it reaches the designated location will it release energy to kill tumor cells or cancer cells. Therefore, compared with ordinary radiotherapy, proton / heavy ion therapy can greatly improve the patient's comfort and postoperative quality of life, as well as improve the cure rate and reduce toxic side effects.

[0003] Although the effectiveness and many advantages of proton / heavy ion therapy have been recognized internationally, most of the multi-chamber proton / heavy ion therapy systems commonly used at home and abroad currently have many problems such as large footprint, high cost, high operation and maintenance cost, long construction period and high patient treatment costs.

[0004] Although the current miniaturized single-room proton / heavy ion therapy systems at home and abroad have solved the problems of large footprint and long construction period to a certain extent, the construction cost and operation and maintenance cost of each treatment room are still high, so the problem of high patient treatment costs is still difficult to solve.

[0005] The main reasons for the high prices of multi-chamber proton / heavy ion therapy systems and single-chamber proton / heavy ion therapy systems at home and abroad are: At present, multi-chamber proton / heavy ion therapy systems are usually arranged side by side on the same plane, which requires the use of longer beam transport lines, which invisibly increases the manufacturing cost and subsequent operation and maintenance cost, and it is difficult to reduce the floor space. Currently, a compact single-room proton / heavy ion therapy system usually consists of one particle accelerator and one treatment room. Although the total area is greatly reduced compared to a multi-room proton / heavy ion therapy system, customers must purchase one particle accelerator for each treatment room they purchase. Therefore, the cost of a compact single-room proton / heavy ion therapy system is still high.

[0006] 3. For single-room and multi-room proton / heavy ion therapy systems, if treatment at multiple angles is required, usually one treatment room is required along with one rotating gantry, which is the main reason why the floor space and cost are high.

[0007] Therefore, in order to solve the above technical problems, a new solution is now provided. Summary of the invention

[0008] In order to solve one of the above-mentioned technical defects, an embodiment of the present application provides a multi-chamber single treatment head proton and heavy ion therapy system that can perform multi-angle treatment.

[0009] According to a first aspect of an embodiment of the present application, there is provided a multi-chamber single treatment head proton and heavy ion treatment system capable of multi-angle treatment, comprising a proton / heavy ion accelerator, a proton / heavy ion beam transport system, a rotary switching rack, a treatment head and a multi-treatment chamber structure, wherein the proton / heavy ion accelerator, the proton / heavy ion beam transport system and the treatment head are sequentially connected together; Wherein, the proton / heavy ion beam transport system is fixed inside the rotating switching frame, and the treatment head is fixed on one side of the outside of the rotating switching frame; The rotating switching frame is located in the center of the multi-treatment room structure and is surrounded by multiple treatment rooms. The proton / heavy ion accelerator is located in the accelerator hall, and the treatment head is located in the treatment room.

[0010] Furthermore, the proton / heavy ion beam transport system includes: a beam measurement system, a deflection magnet, a vacuum tube, a scanning magnet A, a scanning magnet B and an isocenter. The vacuum tube runs through the beam measurement system, the deflection magnet, the scanning magnet A and the scanning magnet B to provide a path for the proton / heavy ion beam; the isocenter is the location where the proton / heavy ion beam finally reaches the top of the Bragg peak, that is, the treatment location where the tumor is placed.

[0011] Furthermore, the deflection magnet deflects the proton / heavy ion beam by 90°.

[0012] Furthermore, the rotation switching frame includes: a frame body, a driving wheel assembly, a driving wheel base assembly, a treatment head interface and a virtual rotation axis; The frame body is installed above the driving wheel assembly and the driving wheel base assembly. By controlling the rotation and stopping of the driving wheel assembly, the frame body can rotate forward, reverse or stop around the virtual rotation axis; the treatment head interface is used to fix the treatment head; the virtual rotation axis is in the same direction as the focusing magnet in the proton / heavy ion accelerator.

[0013] Furthermore, the frame body includes: a cylinder wall, an end ring and an inspection window, the interior of the cylinder wall has multiple supporting structures for fixing the proton / heavy ion beam transport system, an end ring is provided at each end of the cylinder wall, and the side wall of the cylinder wall is provided with an inspection window.

[0014] Furthermore, the treatment head comprises: a main frame, a vacuum system, an ionization chamber assembly and a treatment head flange fixing surface, wherein the main frame fixes the vacuum system and the ionization chamber assembly together, and the treatment head flange fixing surface fixes the treatment head and the rotating switching frame together.

[0015] Furthermore, the multi-treatment room structure includes: a patient positioning system, a treatment room, a cement building and an accelerator hall, the cement building is composed of multiple treatment rooms and an accelerator hall, and the patient positioning system is located in the treatment room.

[0016] Furthermore, the driving wheel base assembly fixes and supports the driving wheel assembly, and the driving wheel base assembly is fixed on a cement building to provide support for the rotating switching frame.

[0017] Furthermore, the treatment head interface is located in a square opening on the cylinder wall, extends outward and includes an outwardly facing flange connection surface, and the flange connection surface is connected to the treatment head flange fixing surface on the treatment head.

[0018] The beneficial technical effects of this application are: 1. This application uses only one treatment head to provide proton / heavy ion beams for treatment in multiple treatment rooms.

[0019] 2. The size of the beam transport line of the present application is much smaller than other existing multi-chamber proton / heavy ion therapy systems, reducing the footprint, manufacturing cost and operating cost.

[0020] 3. The rotating switching rack of the present application has low complexity, small size, light weight, and small footprint, which makes it easy to hoist, install, and repair and maintain. It can also provide proton / heavy ion therapy at multiple angles, effectively avoiding the shortcomings of traditional racks that are expensive, large, and heavy, while retaining the advantages of traditional racks that can treat at multiple angles.

[0021] 4. This application has short floor space and construction period, good economic efficiency and innovation, and can effectively solve the problem that proton / heavy ion therapy equipment is generally expensive and bulky. It has a very high driving force for the use of proton / heavy ion therapy equipment for tumor treatment to gradually enter the acceptable range for the public. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a schematic diagram of the layout of a traditional multi-chamber proton / heavy ion therapy system; Figure 2 A multi-chamber single treatment head proton / heavy ion treatment system according to an embodiment of the present invention; Figure 3 A schematic diagram of the positions of a proton / heavy ion beam transport system and a rotating switching frame in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a proton / heavy ion beam transport system in one embodiment of the present invention; Figure 5 It is a structural schematic diagram of the rotary switching rack in the present invention; Figure 6 It is a partial structural schematic diagram of the rotary switching rack in the present invention; Figure 7 It is a schematic diagram of the structure of the treatment head in the present invention; Figure 8 A schematic diagram of angle switching of a rotary switching rack in the present invention; Fig. 9 A schematic front view of a multi-treatment room structure in one embodiment of the present invention; Fig.10 A schematic diagram of the back of a multi-treatment room structure in one embodiment of the present invention; Fig.11 These are two of the different implementation schemes of the multi-treatment room structure in the present invention; Fig.12 Schematic diagram of the operation of different treatment rooms in one embodiment of the present invention.

[0023] Among them: 1-proton / heavy ion accelerator; 2-proton / heavy ion beam transport system; 3-rotating switching rack; 4-treatment head; 5-multi-treatment room structure; 11-focusing magnet; Beam measurement system; 22-deflection magnet; 23-vacuum tube; 24-scanning magnet A; 25-scanning magnet B; 26-isocenter; Rack body; 311-cylinder wall; 312-end ring; 313-inspection window; 32-driving wheel assembly; 33-driving wheel base assembly; 34-treatment head interface; 35-virtual rotation axis; 41-main frame; 42-vacuum system; 43-ionization chamber assembly; 44-treatment head flange fixing surface; 51- Patient positioning system; 52- Treatment room; 53- Concrete building; 54- Accelerator hall. DETAILED DESCRIPTION

[0024] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0025] The present application provides a multi-chamber single treatment head proton / heavy ion treatment system capable of performing multi-angle treatment, such as Figure 2 As shown, it includes a proton / heavy ion accelerator 1, a proton / heavy ion beam transport system 2, a rotating switching frame 3, a treatment head 4 and a multi-treatment room structure 5. The focusing magnet 11 at the beam exit position of the proton / heavy ion accelerator 1 is aligned with the proton / heavy ion beam transport system 2 in the air, the proton / heavy ion beam transport system 2 is fixed inside the rotating switching frame 3, the treatment head 4 is fixed on one side of the rotating switching frame 3 and connected to the proton / heavy ion beam transport system 2, the rotating switching frame 3 can drive the treatment head 4 and the proton / heavy ion beam transport system 2 to rotate around a virtual rotation axis 35, the rotating switching frame 3 is installed in the middle of the multi-treatment room structure 5, and the treatment head 4 can reach different treatment rooms 52 through the rotation of the frame body 31 of the rotating switching frame 3.

[0026] Specifically, Figure 3 The figure shows a schematic diagram of the positions of a proton / heavy ion beam transport system and a rotating switching frame in one embodiment of the present invention, wherein a proton / heavy ion accelerator 1, a proton / heavy ion beam transport system 2 and a treatment head 4 are connected together in sequence, wherein the proton / heavy ion beam transport system 2 and the treatment head 4 are fixed inside and outside the rotating switching frame 3.

[0027] Specifically, Figure 4 The figure shows a schematic diagram of the structure of a proton / heavy ion beam transport system in one embodiment of the present invention. The proton / heavy ion beam transport system 2 includes a beam measuring system 21, a deflection magnet 22, a vacuum tube 23, a scanning magnet A 24, a scanning magnet B 25, and an isocenter 26. The isocenter 26 indicates the location where the proton / heavy ion beam finally reaches the top of the Bragg peak, and is also the treatment location where the tumor should be placed. The vacuum tube 23 runs through the beam measuring system 21, the deflection magnet 22, the scanning magnet A 24, and the scanning magnet B 25, providing a path for the proton / heavy ion beam.

[0028] In a preferred embodiment of the present invention, the proton / heavy ion beam transport system 2 deflects the proton / heavy ion beam by 90°. The preferred embodiment is described below.

[0029] The specific specifications and quantity of the deflection magnet 22 can be combined in multiple ways to achieve the purpose of deflecting by 90°. For example, three 30° deflection magnets can be used in combination, or two 45° deflection magnets can be used in combination, or one 90° deflection magnet can be used, or other possible combinations can be used to achieve the purpose of deflecting the proton / heavy ion beam by 90°.

[0030] According to the above implementation, deflection magnet combinations with other deflection angles can also be used to achieve the purpose of deflecting the proton / heavy ion beam by 90°. This embodiment only uses a single 90° deflection magnet to demonstrate the working principle of the present invention.

[0031] Specifically, Figure 5 The structure diagram of the rotary switching rack in the present invention is shown, and the rotary switching rack 3 includes a rack body 31, a driving wheel assembly 32, a driving wheel base assembly 33, a treatment head interface 34 and a virtual rotation axis 35. The proton / heavy ion beam transport system 2 is fixed inside the rack body 31. The rack body 31 is installed above the driving wheel assembly 32 and the driving wheel base assembly 33. By controlling the specific direction rotation and stop movement of the driving wheel assembly 32, the rack body 31 can be rotated forward, reversed or stopped around the virtual rotation axis 35. The treatment head interface 34 is used to fix the treatment head 4. The virtual rotation axis 35 is in the same direction as the focusing magnet 11 at the proton / heavy ion accelerator beam exit position in the proton / heavy ion accelerator 1. Therefore, when the rotary switching rack rotates around the virtual rotation axis 35, the proton / heavy ion beam in the focusing magnet 11 at the proton / heavy ion accelerator beam exit position can always enter the proton / heavy ion beam transport system 2 in the same direction.

[0032] Specifically, Figure 6 The figure shows a partial structural schematic diagram of the rotary switching rack 3 in the present invention; the rack body 31 includes a barrel wall 311, an end ring 312 and an inspection window 313. The interior of the barrel wall 311 has multiple supporting structures for fixing the proton / heavy ion beam transport system. An end ring 312 is provided at each end of the barrel wall 311, and an inspection window 313 is provided on the side wall of the barrel wall 311. The number of the inspection windows 313 is 3, which is convenient for inspecting the treatment system.

[0033] Specifically, Figure 7 The figure shows a schematic diagram of the structure of the treatment head 4 in the present invention; the treatment head 4 includes a main frame 41, a vacuum system 42, an ionization chamber assembly 43 and a treatment head flange fixing surface 44. The main frame 41 fixes the vacuum system 42 and the ionization chamber assembly 43 together. The treatment head flange fixing surface 44 fixes the treatment head 4 and the rotation switching frame 3 together.

[0034] Specifically, Figure 8 The figure shows the angle switching schematic diagram of the rotating switching rack 3 in the present invention; since the rotating switching rack 3 can rotate within the range of 0-360 degrees, the acute angle between the treatment head 4 and the horizontal ground can be changed between 0-90 degrees. By controlling the specific angle of the rotating switching rack 3, the proton / heavy ion beam will be delivered to a specific angle and direction for treatment.

[0035] Specifically, Fig. 9 and Fig.10 The figure shows the front and back schematic diagrams of a multi-treatment room structure 5 in one embodiment of the present invention; the multi-treatment room structure 5 includes a patient positioning system 51, treatment rooms 52, a cement building 53, and an accelerator hall 54. The cement building 53 divides the surrounding space centered on the virtual rotation axis into 2-4 treatment rooms 52 according to needs, each of which can be reached by a treatment head rotated to a specific angle, and each treatment room includes a patient positioning system. Fig. 9 As shown, the rotating switching frame 3 is located in the center of the multi-treatment room structure 5 and is surrounded by multiple treatment rooms 52. When the treatment head 4 is in one of the treatment rooms 52, it can treat the patient on the patient positioning system 51 in the treatment room. Fig.10 As shown, the proton / heavy ion accelerator 1 is located in an accelerator hall 54 .

[0036] Specifically, Fig.12 Two of the different embodiments of the multi-treatment room structure 5 of the present invention are shown. In a preferred embodiment of the present invention, the multi-treatment room structure 5 includes a plurality of different treatment rooms 52. Each treatment room 52 includes a patient positioning system 51. The preferred embodiments are described below.

[0037] The specific number and specific specifications of the treatment rooms included in the multi-treatment room structure 5 can be combined in multiple ways to meet different treatment angle requirements and treatment room quantity requirements, wherein the specific number of treatment rooms can be 2, 3, 4 or 5. The treatment angles of the treatment heads in different treatment rooms can be 0°, 30°, 45°, 60°, 90° or any angle between 0-360°. The above combination of treatment rooms with different angles and different numbers can meet the different treatment requirements of medical staff.

[0038] According to the above implementation, it is also possible to use Fig.12 Combinations other than the two combinations shown can be used to achieve the purpose of delivering proton / heavy ion beams to different rooms to treat patients at different angles. This embodiment only uses one of the three treatment rooms to demonstrate the working principle of the present invention.

[0039] Specifically, Fig.12 The figure shows the working diagram of different treatment rooms 32 in one embodiment of the present invention. Fig.12 In the left figure, the rotating switching frame 3 moves the treatment head 4 to the lower left treatment room to treat the patient in the treatment room. Fig.12 In the middle figure, the rotating switching frame 3 moves the treatment head 4 to the upper treatment room to treat the patient in the treatment room. Fig.12 In the right figure, the rotating switching frame 3 moves the treatment head 4 to the lower right treatment room to treat the patients in the treatment room.

[0040] The overall working principle of the present invention is: The proton or heavy ion beam generated by the proton accelerator or heavy ion accelerator enters the proton / heavy ion beam transport system in the rotating switching frame after being drawn out, and after being deflected 90 degrees by the deflection magnet in the proton / heavy ion beam transport system, enters the scanning magnet, and finally reaches a specific position in a specific treatment room to treat the tumor at that position. Since the rotation axis of the rotating switching frame coincides with the direction of the proton / heavy ion beam drawn out by the proton / heavy ion accelerator, the proton / heavy ion beam can enter the proton / heavy ion beam transport system in the same direction and be shaped into sheets by the deflection magnet regardless of the rotation angle and speed of the rotating switching frame. At the same time, since the proton / heavy ion beam transport system and the treatment head are fixed inside and outside the rotating switching frame and rotate together with the rotating switching frame, when the rotating switching frame is controlled to rotate, the treatment head can be aimed at a specific area of ​​any treatment room at any angle, so the proton / heavy ion beam is also transported to the specific position of the treatment room to perform treatment operations.

[0041] The present invention utilizes a small cylindrical rotating switching frame to transport the proton / heavy ion beam deflected by 90° to any angle, thereby meeting the following requirements at the same time: one proton / heavy ion accelerator is matched with multiple treatment rooms, only one set of beam transport system is required and the system is very short, multiple treatment rooms share one treatment head, the entire system can provide irradiation treatment at multiple angles between 0-360°, and occupies a small area.

[0042] Therefore, the present invention has the advantages of greatly reducing system complexity, manufacturing costs, operation and maintenance costs, and reducing the overall footprint while retaining multiple treatment rooms and multiple irradiation angles.

[0043] The proton / heavy ion transmission route designed by the present invention is simple and easy to operate. The whole set of equipment with the rotating switching frame and the treatment head is compact and easy to process, assemble, transport, hoist and maintain. It can shorten the product development cycle, processing delivery cycle and on-site commissioning cycle. It can greatly shorten the overall construction cycle of the proton / heavy ion project.

[0044] The present invention has the advantages of small footprint, low manufacturing and maintenance costs, etc., which will directly and quickly reduce the cost of proton / heavy ion treatment for cancer patients to a level acceptable to the public, which is of great significance to the treatment and elimination of tumors by humans.

[0045] The above embodiments are only used to illustrate the present invention, and the components and devices of the embodiments are all subject to change. Any equivalent transformation and improvement based on the technical solution of the present invention should not be excluded from the protection scope of the present invention. The above equivalent transformation and improvement include but are not limited to: the deflection angle of the deflection magnet and the specific number of secondary irons contained, the number of treatment rooms and the arrangement and spatial position size of each treatment room.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment, characterized in that: It includes a proton / heavy ion accelerator, a proton / heavy ion beam transport system, a rotating switching frame, a treatment head and a multi-treatment room structure, wherein the proton / heavy ion accelerator, the proton / heavy ion beam transport system and the treatment head are connected together in sequence; Wherein, the proton / heavy ion beam transport system is fixed inside the rotating switching frame, and the treatment head is fixed on one side of the outside of the rotating switching frame; The rotating switching frame is located in the center of the multi-treatment room structure and is surrounded by multiple treatment rooms. The proton / heavy ion accelerator is located in the accelerator hall, and the treatment head is located in the treatment room.

2. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 1, characterized in that: The proton / heavy ion beam transport system includes: a beam measurement system, a deflection magnet, a vacuum tube, a scanning magnet A, a scanning magnet B and an isocenter. The vacuum tube runs through the beam measurement system, the deflection magnet, the scanning magnet A and the scanning magnet B to provide a path for the proton / heavy ion beam; the isocenter is the position where the proton / heavy ion beam finally reaches the top of the Bragg peak, that is, the treatment position where the tumor is placed.

3. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 2, characterized in that: The deflection magnet deflects the proton / heavy ion beam by 90°.

4. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 1, characterized in that: The rotating switching frame comprises: a frame body, a driving wheel assembly, a driving wheel base assembly, a treatment head interface and a virtual rotating axis; The frame body is installed above the driving wheel assembly and the driving wheel base assembly. By controlling the rotation and stopping of the driving wheel assembly, the frame body can rotate forward, reverse or stop around the virtual rotation axis; the treatment head interface is used to fix the treatment head; the virtual rotation axis is in the same direction as the focusing magnet in the proton / heavy ion accelerator.

5. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 4, characterized in that: The frame body comprises: a cylinder wall, an end ring and an inspection window. The interior of the cylinder wall has a plurality of support structures for fixing the proton / heavy ion beam transport system. An end ring is respectively provided at both ends of the cylinder wall, and an inspection window is provided on the side wall of the cylinder wall.

6. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 1, characterized in that: The treatment head comprises: a main frame, a vacuum system, an ionization chamber assembly and a treatment head flange fixing surface. The main frame fixes the vacuum system and the ionization chamber assembly together, and the treatment head flange fixing surface fixes the treatment head and the rotating switching frame together.

7. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 4, characterized in that: The multi-treatment room structure includes: a patient positioning system, a treatment room, a cement building and an accelerator hall. The cement building is composed of multiple treatment rooms and the accelerator hall, and the patient positioning system is located in the treatment room.

8. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 7, characterized in that: The driving wheel base assembly fixes and supports the driving wheel assembly, and the driving wheel base assembly is fixed on the cement building to provide support for the rotating switching frame.

9. The multi-chamber single treatment head proton and heavy ion therapy system capable of multi-angle treatment according to claim 4, characterized in that: The treatment head interface is located in a square opening on the cylinder wall, extends outward and includes an outwardly facing flange connection surface, and the flange connection surface is connected to the treatment head flange fixing surface on the treatment head.

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