Particle beam therapy device

Abstract

The present disclosure relates to the technical field of tumor radiotherapy, and specifically provides a particle beam therapy device. The particle beam therapy device includes a fixed support device, a synchrotron, a rotating support device, a first deflection magnet group, a second deflection magnet group, and an irradiation head. The fixed support device is used as a support foundation; the power provided by the driving rotation mechanism can enable the rotating support device to rotate around the rotation center line; the synchrotron is inclined and arranged in the rotating support device, and the plane where it is located forms an angle with the vertical plane. A first delivery channel is connected to the synchrotron; the first deflection magnet group is arranged on the rotating support device, and the particle beam output through the first delivery channel enters the first deflection magnet group along the tangent direction of the input end of the first deflection magnet group; the particle beam output through the first deflection magnet group enters the second deflection magnet group along the tangent direction of the input end of the second deflection magnet group, and the irradiation head is connected to the end of the second deflection magnet group.

Description

Technical Field

[0001] The present disclosure relates to the technical field of tumor radiotherapy, and particularly to a particle beam therapy device. Background Art

[0002] Particle accelerators can be applied to tumor radiotherapy, such as accelerating particle beams in heavy ion therapy or proton therapy. The accelerated particle beam needs to be guided to the target tissue of the patient, and often needs to irradiate the target tissue from different directions to enhance the treatment effect or reduce the radiation dose to the surrounding healthy tissues.

[0003] In some tumor radiotherapy systems, the particle beam generating device and the accelerator are fixed to the ground, and the treatment room is arranged near the accelerator. Therefore, it is necessary to deflect and guide the particle beam emitted from the accelerator into the treatment room. Specifically, a complex system composed of deflection magnets and focusing magnets is required to guide the particle beam from the particle accelerator to the target. Its volume is large and the manufacturing cost is expensive. In addition, the distance between the treatment room and the accelerator is large, and the particle beam will have energy loss during transmission, which may lead to a reduction in the control accuracy of the irradiation dose. Summary of the Invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a particle beam therapy device.

[0005] The present disclosure provides a particle beam therapy device for emitting a particle beam to a target tissue, characterized by comprising:

[0006] A fixed support device, including a base, on which a driving rotation mechanism is provided for serving as a support foundation;

[0007] A rotating support device rotatably arranged on the fixed support device; when the rotating support device makes a rotational motion, it has a rotation center line, and the power provided by the driving rotation mechanism can make the rotating support device rotate around the rotation center line;

[0008] A synchrotron, arranged in the rotating support device for accelerating the particle beam. There is a deflection magnet in the synchrotron. The synchrotron is inclined in the rotating support device, and the plane where the synchrotron is located forms an angle with the vertical plane. A first conveying channel is connected to the synchrotron;

[0009] A first deflection magnet group, arranged on the rotating support device for receiving and conveying the particle beam output from the first conveying channel. The first deflection magnet group is arc-shaped, and the particle beam output from the first conveying channel enters the first deflection magnet group along the tangent direction of the input end of the first deflection magnet group;

[0010] A second deflection magnet group, connected to the first deflection magnet group, for receiving and transmitting the particle beam output by the first deflection magnet group. The second deflection magnet group is arc-shaped, and the particle beam output by the first deflection magnet group enters the second deflection magnet group along the tangent direction of the input end of the second deflection magnet group. The output end of the second deflection magnet group extends out of the rotary support device, and the output end of the second deflection magnet group points to the rotation center line of the rotary support device;

[0011] An irradiation head, connected to the end of the second deflection magnet group, and the particle beam is emitted from the irradiation head to the target tissue.

[0012] Optionally, the plane where the synchrotron is located forms an angle with the vertical plane perpendicular to the rotation center line of the rotary support device.

[0013] Optionally, the output end of the first deflection magnet group is located on one side in the axial direction of the rotary support device.

[0014] Optionally, the tangent direction of the output end of the first deflection magnet group is the horizontal direction or parallel to the support surface of the base.

[0015] Optionally, the plane where the first deflection magnet group is located is coplanar with the plane where the second deflection magnet group is located.

[0016] Optionally, the first delivery channel is perpendicular to the horizontal plane or the support surface of the base.

[0017] Optionally, the first deflection magnet group and the second deflection magnet group have the same structure and parameters as the deflection magnet group in the synchrotron.

[0018] Optionally, the first deflection magnet group and the second deflection magnet group have the same number of deflection magnet bodies as the deflection magnet group in the synchrotron.

[0019] Optionally, the number of deflection magnet bodies of the first deflection magnet group and the second deflection magnet group in the synchrotron is four.

[0020] Optionally, the tangent direction of the output end of the first deflection magnet group is the horizontal direction or parallel to the support surface of the base.

[0021] Optionally, the plane where the first deflection magnet group is located is coplanar with the plane where the second deflection magnet group is located.

[0022] Optionally, the first delivery channel is inclined towards one side of the rotary support device.

[0023] Optionally, the output end of the first deflection magnet group extends towards the side of the rotary support device away from the first conveying channel.

[0024] Optionally, a first deflection magnet is connected to the output end of the first deflection magnet group, and the particle beam deflected by the first deflection magnet enters the second deflection magnet group along the tangent direction of the input end of the second deflection magnet group.

[0025] Optionally, the first deflection magnet deflects the particle beam output by the first deflection magnet group to the horizontal direction or parallel to the support surface of the base.

[0026] Optionally, a second conveying channel is provided between the first deflection magnet group and the second deflection magnet group. The particle beam deflected by the first deflection magnet enters the second conveying channel, and the connection between the output end of the second conveying channel and the second deflection magnet group is tangent.

[0027] Optionally, the second conveying channel is arranged in the horizontal direction or parallel to the support surface of the base.

[0028] Optionally, a first focusing magnet is provided on the outer periphery of the second conveying channel.

[0029] Optionally, an angle is formed between the plane where the first deflection magnet group is located and the plane where the second deflection magnet group is located.

[0030] Optionally, annular structures are provided on both sides of the rotary support device. The annular structures are coaxial with the rotary support device. The annular structures are rotatably arranged on the fixed support device, and the outer diameter of the annular structures is smaller than the radial distance of the outermost part of the rotary support device in the radial direction.

[0031] Optionally, the deflection magnet bodies in the first deflection magnet group, the deflection magnet bodies in the second deflection magnet group, and the deflection magnet bodies of the deflection magnet group in the synchrotron all have focusing edges.

[0032] Optionally, the angle between the plane where the synchrotron is located and the horizontal plane or the support surface of the base is 40° - 90°.

[0033] Optionally, a fixed seat for supporting the synchrotron is provided in the rotary support device.

[0034] Optionally, the particle beam output by the second deflection magnet group is perpendicular to the rotation center line of the rotary support device.

[0035] Optionally, the plane where the second deflection magnet group is located is perpendicular to the horizontal plane or the support surface of the base.

[0036] Optionally, the rotation center line of the rotation support device is arranged in the horizontal direction or parallel to the support surface of the base.

[0037] Optionally, the center line of the synchrotron coincides with the vertical plane perpendicular to the rotation center line of the rotation support device.

[0038] Optionally, the center line of the synchrotron intersects with the vertical plane perpendicular to the rotation center line of the rotation support device.

[0039] The technical solutions provided by the embodiments of the present disclosure have the following advantages compared with the prior art:

[0040] Compared with the structure in which the synchrotron and the beam transport device are arranged separately, the synchrotron, the first deflection magnet group and the second deflection magnet group integrated on the rotation support device can significantly save space. And the particle beam output by the synchrotron enters the first deflection magnet group along the tangent direction of the input end of the first deflection magnet group. Therefore, there is no need to set deflection magnets and focusing magnets at the input end of the first deflection magnet group, so that the overall height of the particle beam treatment device is reduced. The synchrotron is inclined, further reducing the height of the synchrotron. The reduction in height can reduce the space occupied by the particle beam treatment device, thereby saving the construction cost and construction difficulty of the building for accommodating the entire particle beam treatment device, and realizing an ultra-small synchrotron particle beam treatment device. Description of the Drawings

[0041] The drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with the present disclosure and used together with the description to explain the principles of the present disclosure.

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 It is a schematic structural diagram of the particle beam treatment device when the second deflection magnet group and the first transport channel of the embodiment of the present disclosure are arranged on the same side of the rotation support device;

[0044] Figure 2 is Figure 1 the left view of;

[0045] Figure 3 is Figure 1 the top view of;

[0046] Figure 4 is Figure 1Schematic diagram of a particle beam therapy device after hiding the rotary support device;

[0047] Figure 5 is Figure 4 left view of;

[0048] Figure 6 Schematic diagram of a synchrotron arranged on a fixed base;

[0049] Figure 7 Schematic diagram of the particle beam therapy device when the output end of the second deflection magnet group described in the embodiment of the present disclosure extends towards the side of the rotary support device away from the first transport channel;

[0050] Figure 8 is Figure 7 left view of;

[0051] Figure 9 is Figure 7 top view of;

[0052] Figure 10 is Figure 7 Schematic diagram of a particle beam therapy device after hiding the rotary support device in;

[0053] Figure 11 Schematic diagram of the particle beam therapy device when one side of the first transport channel described in the embodiment of the present disclosure is inclined towards the rotary support device;

[0054] Figure 12 Schematic diagram of annular support plates arranged on both sides of the rotary support device described in the embodiment of the present disclosure;

[0055] Figure 13 is Figure 12 left view of;

[0056] Figure 14 Schematic diagram of the vertical plane between the particle beam movement trajectory and the plane of the particle beam movement trajectory of the synchrotron in the embodiment of the present disclosure;

[0057] Figure 15 Schematic diagram of the angle formed between the plane of the first deflection magnet group and the plane of the second deflection magnet group in the embodiment of the present disclosure;

[0058] Figure 16 Schematic diagram when the number of deflection magnet bodies in the first deflection magnet group described in the embodiment of the present disclosure is three;

[0059] Figure 17 Schematic diagram when the number of deflection magnet bodies in the second deflection magnet group described in the embodiment of the present disclosure is three.

[0060] Among them, 10 is the plane where the synchrotron is located; 11 is the plane where the first deflection magnet group is located; 12 is the plane where the second deflection magnet group is located; 13 is the vertical plane; 14 is the rotation center line; 15 is the vertical plane perpendicular to the rotation center line; 100 is the fixed support device; 200 is the rotary support device; 210 is the annular plate; 230 is the support rod; 240 is the annular support plate; 300 is the injection device; 310 is the drive device; 400 is the synchrotron; 410 is the first deflection magnet body; 420 is the fixed seat; 500 is the first deflection magnet group; 510 is the second deflection magnet body; 600 is the second deflection magnet group; 610 is the third deflection magnet body; 700 is the support device; 800 is the irradiation head; 900 is the second delivery channel; 901 is the first focusing magnet; 902 is the first deflection magnet; 910 is the first delivery channel; 911 is the second focusing magnet. Detailed implementation manners

[0061] In order to more clearly understand the above objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other.

[0062] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all the embodiments.

[0063] Combined with Figures 1 to 5 As shown, the particle beam therapy device provided by the embodiment of the present application is used to emit a particle beam to a target tissue. The particle beam therapy device includes a fixed support device 100, a rotary support device 200, an injection device 300, a synchrotron 400, a first deflection magnet group 500, a second deflection magnet group 600, a support device 700, a drive device 310, an irradiation head 800 and a control device (not shown in the figure).

[0064] The fixed support device 100 is fixed to the ground as an installation base. In some embodiments, the base of the fixed support device 100 is the ground. A drive rotation mechanism is provided on the base for serving as a support foundation. The injection device 300 includes a particle source, which is fixed on the rotary support device 200 and is used to generate a particle beam and preliminarily accelerate the particle beam and then inject it into the synchrotron 400. Specifically, it may be a proton beam, a carbon ion beam or a helium ion beam, etc.

[0065] Combined with Figures 1 to 3 As shown, the synchrotron 400 is fixed on the rotary support device 200 and is used to receive and accelerate the particle beam generated by the injection device 300. The synchrotron 400 has deflection magnets. Combined withFigure 2 and Figure 5 As shown, the synchrotron 400 is inclined and arranged within the rotary support device 200, and the plane where the synchrotron 400 is located forms an angle with the vertical plane. Further preferably, as Figure 5 shown, the plane where the synchrotron 400 is located forms an angle with the vertical plane 15 perpendicular to the rotation center line. A first conveying channel 910 is connected to the synchrotron 400. This design method can reduce the height of the rotary support device 200, thereby reducing the height of the particle beam therapy device and saving the occupied space. Combining Figure 5 and Figure 9 shown, the plane 10 where the synchrotron is located herein and below, the plane 11 where the first deflection magnet group is located, and the plane 12 where the second deflection magnet group is located all refer to the plane where the particle beam moves in each device or the plane where the channel center line of the particle beam is located.

[0066] The angle between the plane where the synchrotron 400 is located and the horizontal plane or the supporting surface of the base is 40° - 90°. Preferably, the angle between the plane where the synchrotron 400 is located and the horizontal plane or the supporting surface of the base is 45° - 80°. For the synchrotron 400 within this angle range, its axial length is not too long, and the height of the accommodating building and the axial cost are more reasonable. At the same time, the spatial shape of the plane where the synchrotron 400 is located is similar to an oblong shape. After tilting, its axial projection can be closer to a circular shape, which can reduce the circumferential length or its radius of the rotary support device 200 and lower the height of the particle beam therapy device. At the same time, the inclined arrangement of the synchrotron 400 makes the axial length of the rotary support device 200 longer. Therefore, multiple roller frames can be arranged in the axial direction to make the rotation of the synchrotron 400 more stable. Among them, the roller frame is relatively common in the prior art, and in this embodiment, it only plays a role of fixed support. Therefore, no more description is made here.

[0067] Further preferably, as Figure 6 shown, a fixed seat 420 for supporting the synchrotron 400 is provided within the rotary support device 200. After fixing each component and magnet of the synchrotron 400 through the fixed seat 420, the whole is installed on the rotary support device 200. When installing and fixing each component and magnet of the synchrotron 400 on the fixed seat 420, it can be installed in a horizontal state, reducing the installation difficulty of the synchrotron 400. Otherwise, if each component of the synchrotron 400 is installed in an inclined state, the installation accuracy requirement is high and the difficulty is relatively large.

[0068] The particle beam passes through the first deflection magnet group 500 and the second deflection magnet group 600 to receive the accelerated particle beam in turn, and irradiates the target area through the irradiation head 800. The support device 700 is used to support the patient. The support device 700 is driven by a movable mechanical mechanism (not shown) to adjust its relative position with the irradiation head 800. The support device 700 is preferably a treatment bed, which can be moved by a mechanical arm or a roller movable seat provided at the bottom. The driving device 310 is used to drive the rotating support device 200 to rotate on the fixed support device 100. The synchrotron 400 is connected to a first conveying channel 910, and the first conveying channel 910 conveys the particle beam upward or obliquely upward.

[0069] The axial lengths mentioned above and below refer to the length direction of the rotation center line 14 of the rotation support device 200 .

[0070] Combination Figure 4 , Figure 5 and Figure 6 As shown, the synchrotron 400 includes four groups of deflection magnet groups and an accelerator. The number of deflection magnet bodies in each group of deflection magnet groups is multiple, and each group of deflection magnet groups includes four first deflection magnet bodies 410 in the illustrated embodiment. The accelerator may be a radio frequency accelerator. The first deflection magnet body 410 is used to deflect the particle beam through its magnetic field so that the particle beam can rotate along a circular orbit. The synchrotron 400 accelerates the particle beam to rotate in a circular manner to increase the energy or maintain it in a circular orbit. Further optimized, the first deflection magnet body 410 may also be configured to have an edge focusing effect. Among them, the number of the first deflection magnet bodies 410 in each group of deflection magnet groups shown in the figure is multiple, and the structure and parameters of the first deflection magnet bodies 410 in each group of deflection magnet groups are different. The figure is only for illustration and does not represent the actual structure of the first deflection magnet body 410. In some optional embodiments, the number of the first deflection magnet body 410 in each group of deflection magnet groups may also be one, so that the beam is rotated by 90 degrees. In other embodiments, the shape of the synchrotron 400 may also be a rounded rectangle or the like, and each rounded corner is composed of a plurality of deflection magnets, and the deflection magnets at the rounded corners can deflect the beam.

[0071] Combination Figure 1 , Figure 2 , Figure 7 and Figure 8As shown in the figure, the fixed support device 100 includes a base and a driving rotation mechanism. As a preferred solution, the driving rotation mechanism may include a plurality of rollers and a driving device 310. The rollers are rotatably arranged on the base. The axes of the plurality of rollers are parallel, and the plurality of rollers are arranged on the base along a concave arc track. The outer peripheral surface of the rollers forms a concave arc track. The driving device 310 can drive at least one roller to rotate. As an implementation, the driving device 310 may be a motor, a motor reducer, or a speed reduction motor, etc., which can provide pivotal rotation of the rollers through electricity. The driving rotation mechanism may also be other mechanisms capable of driving an object to rotate.

[0072] The rotary support device is rotatably arranged on the fixed support device 100. The rotary support device 200 is used to support the synchrotron 400, that is, the synchrotron 400 is installed on the rotary support device 200. When the rotary support device 200 makes a rotational motion, it has a rotation center line 14. The power provided by the driving rotation mechanism can make the rotary support device 200 rotate around the rotation center line 14. Preferably, the rotation center line 14 of the rotary support device 200 is arranged parallel to the horizontal plane or the support surface of the base (i.e., the upper surface of the base), which is convenient for installation and control. In some embodiments, the rotary support device 200 is an annular bracket, specifically including two annular plates 210. The two annular plates 210 are concentrically arranged and spaced apart, so that a space for installing the synchrotron 400 is formed between the two annular plates 210. The outer peripheral surface of the rotary support device 200 is equidiameter with the arc track arranged by the outer edges of the rollers in the fixed support device 100, and is rotatably arranged on the outer peripheral surface of the rollers. The outer peripheral surface of the rollers is in tangential contact with the outer peripheral surface of the rotary support device 200. When the rollers rotate, they can drive the rotary support device 200 to rotate.

[0073] It should be understood that the shape of the rotary support device 200 and its connection manner with the fixed support device 100 are not limited to the above structure. Other structures that can achieve the installation and fixation of the synchrotron 400 and can rotate on the fixed support device 100 should also fall within the scope of protection required by the present disclosure. For example, the outer shape of the rotary support device 200 can be square, polygonal, etc., and the internal structure can adopt a hollow truss structure formed by fixing and connecting short metal round tubes and cylinders to each other, which can greatly reduce the weight of the rotary support device 200.

[0074] The rotatable connection between the rotary support device 200 and the fixed support device 100 can also be in other forms. For example, an annular structure can be provided on both end faces of the rotary support device 200 (the annular structure can be an arc-shaped or open ring capable of rotating the synchrotron 400 by a set angle. The central angle of the arc or ring ensures that the synchrotron 400 can rotate a preset angle, for example, greater than or equal to 90°. Preferably, it is a circular ring structure, such as Figure 12As shown in the figure, two fixed support devices 100 are provided. The annular structure is coaxial with the rotation center of the rotary support device 200. The annular structure is rotatably arranged on the fixed support device 100, and the outer diameter of the annular structure is smaller than the radial distance of the outermost part of the rotary support device 200 in the radial direction. At this time, the radius of the annular structure of the fixed support device 100 can be smaller. The outer peripheral surfaces of the two annular structures cooperate with the rollers on the fixed support device 100, and the rotary support device 200 is driven to rotate through the engagement or friction between the rollers and the outer peripheral surfaces of the annular structures.

[0075] Combined with Figure 12 and Figure 13 As shown, a plurality of support rods 230 are provided on both sides of the rotary support device 200. The annular structure is an annular support plate 240. The annular support plate 240 is arranged at the ends of the support rods 230. Thus, the two annular support plates 240 are fixedly supported on both sides of the rotary support device 200 through the support rods 230. The outer peripheral surface of the annular support plate 240 cooperates with the rollers on the fixed support device 100, and the rotation of the rollers drives the annular support plate 240 to rotate. That is, rollers are provided on both sides of the rotary support device 200. The rollers are rotatably arranged on the base. The axes of the plurality of rollers are parallel, and the plurality of rollers are arranged on the base along a sunken arc track. The outer peripheral surface of the roller forms a sunken arc track and is tangent to the outer edge of the annular support plate 240. The driving device 310 can drive at least one roller to rotate. By supporting the annular support plate 240 through the roller groups on both sides, it can be ensured that the rotary support device 200 is more stably supported and rotates. Preferably, the rotary support device 200 is provided with a mechanism that can ensure that the rotary support device 200 does not roll over during rotation. This mechanism can be arranged inside the roller frame, on the base, or on the top or both side walls of the building body accommodating the particle beam therapy device. For example, rollers or ball mechanisms are provided inside the roller frame, and the rollers or balls abut against the surface of the rotary support device 200. Preferably, the support rod 230 is perpendicular to the plane where the rotary support device 200 is located, and the center line of the annular support plate 240 coincides with the rotation center line 14 of the rotary support device 200, so that the rotation of the annular support plate 240 drives the rotary support device 200 to rotate along its center line. Further optimized, as long as the diameter of the annular support plate 240 is reduced as much as possible to ensure that the particle beam therapy device does not interfere during rotation. For example, first ensure that the part with the largest radial distance of the rotary support device does not interfere with the base during the rotation of the set angle. This design method can further reduce the overall height of the particle beam therapy device.

[0076] In some other embodiments, the rotation of the rotary support device can be driven by a gear transmission. A driving device is provided on the base, and the driving device is connected with a first gear. The driving device can drive the first gear to rotate. Correspondingly, a second gear meshing with the first gear is provided on the outer periphery of the annular plate 210 or the annular support plate 240, so as to drive the annular plate 210 or the annular support plate 240 to rotate through the rotation of the first gear. It can be seen that the specific cooperation mode between the fixed support device 100 and the rotary support device 200 is not limited, as long as it can drive the rotary support device 200 to rotate around its rotation center line 14 through the fixed support device 100.

[0077] Combined with Figures 1 to 6 As shown, the first deflection magnet group 500 is arranged on the rotary support device 200 and is used to receive and transport the particle beam output from the first transport channel 910, that is, to receive and transport the particle beam output from the first transport channel 910. The first deflection magnet group 500 is arc-shaped, and the particle beam output from the first transport channel 910 enters the first deflection magnet group 500 along the tangent direction of the input end of the first deflection magnet group 500, that is, the tangent direction of the input end of the first deflection magnet group 500 coincides with the transport direction of the particle beam output from the synchrotron 400. Combined with Figure 4 and Figure 5 As shown, the first deflection magnet group 500 includes a plurality of deflection magnet bodies. In the illustrated embodiment, the first deflection magnet group 500 includes four second deflection magnet bodies 510. The four second deflection magnet bodies 510 are used to deflect the particle beam through their magnetic fields, so that the particle beam is output from the first deflection magnet group 500 in a set direction. Correspondingly, using four second deflection magnet bodies 510 can deflect the particle beam by 90°. Of course, the particle beam can also be deflected by other angles by changing the central angle of the second deflection magnet body 510. Of course, the number of the second deflection magnet bodies 510 can also be other numbers. For example, the number of the second deflection magnet bodies 510 can also be one, and the central angle of the second deflection magnet body 510 at the corresponding position in the second deflection magnet group 500 can be the same as or different from the central angle of the first deflection magnet body 410 at the corresponding position in the deflection magnet group of the synchrotron 400, which is designed according to specific requirements. Herein, the central angle is the central angle of the deflection magnet body or the deflection magnet group where the beam movement trajectory forms an arc on its surface.

[0078] It should be noted that the tangency mentioned above and below refers to the tangency with the trajectory formed by the movement direction of the particle beam.

[0079] The second deflection magnet group 600 is connected to the first deflection magnet group 500 and is used to receive and transmit the particle beam output by the first deflection magnet group (500). The second deflection magnet group 600 is arc-shaped, and the particle beam output by the first deflection magnet group 500 enters the second deflection magnet group 600 along the tangent direction of the input end of the second deflection magnet group 600, that is, the transport direction of the particle beam output by the first deflection magnet group 500 is parallel to the tangent direction of the input end of the second deflection magnet group 600, or the particle beam output by the first deflection magnet group 500 is parallel to the tangent direction of the input end of the second deflection magnet group 600 after being deflected by the deflection magnet, which is designed according to specific requirements. The output end of the second deflection magnet group 600 points to the rotation center line 14 of the rotation support device 200. Further optimized, the plane where the second deflection magnet group 600 is located is perpendicular to the horizontal plane or the support surface of the base. Adopting the implementation scheme where the input end of the second deflection magnet group 600 is horizontal and the output end is vertical, the second deflection magnet group 600 can directly adopt the same deflection magnet group as the synchrotron 400, that is, the structure, parameters, and the number of deflection magnet bodies are the same, which simplifies the control system. The second deflection magnet group 600 includes a plurality of deflection magnet bodies, and the deflection magnet body in the second deflection magnet group 600 can also be one. In some preferred embodiments, as shown in the illustrated embodiment, the second deflection magnet group 600 includes four third deflection magnet bodies 610, and the four third deflection magnet bodies 610 are used to deflect the particle beam through their magnetic fields so that the particle beam is output in the direction of the rotation center line 14 of the rotation support device 200.

[0080] In some preferred embodiments, in combination with Figure 4 and Figure 5As shown, the first deflection magnet group 500 and the second deflection magnet group 600 have the same structure and parameters as the deflection magnet group in the synchrotron 400. Further optimized, the number of deflection magnet bodies in the first deflection magnet group 500 and the second deflection magnet group 600 is the same as that of the first deflection magnet bodies 410 in each deflection magnet group in the synchrotron 400. Preferably, the number of deflection magnet bodies is four, so that the first deflection magnet group 500 and the second deflection magnet group 600 are coplanar. At this time, there is no need to arrange deflection magnets and focusing magnets between the first deflection magnet group 500 and the second deflection magnet group 600, which simplifies the structure and reduces the axial length of the particle beam therapy device at the same time. And the radius of curvature of the deflection part formed by the deflection magnets in the first deflection magnet group 500 and the second deflection magnet group 600 is the same as that of the deflection part formed by the deflection magnets in the synchrotron 400. Therefore, the first deflection magnet group 500 and the second deflection magnet group 600 can directly adopt the deflection magnet group in the synchrotron 400, making the design and installation of the particle beam therapy device as a whole more convenient. And basically the same control parameters can be used to control the deflection of the beam current, thereby reducing the difficulty and complexity of controlling the deflection of the irradiation treatment path of the patient after the beam current is extracted from the synchrotron 400, and the control system can be simplified. In some other embodiments, when the first deflection magnet group 500 and the second deflection magnet group 600 are coplanar, the numbers of the first deflection magnet group 500 and the second deflection magnet group 600 can also be different. As Figure 16 shown, the number of the first deflection magnet group 500 can be three, and the number of the second deflection magnet group 600 can be four. At this time, the tilt angle of the synchrotron 400 needs to be changed so that the direction of the particle beam output from the first deflection magnet group 500 is the horizontal direction. Or as Figure 17 shown, the number of the first deflection magnet group 500 can be four, and the number of the second deflection magnet group 600 can be three. At this time, the tilt angle of the synchrotron 400 needs to be changed so that the output end of the second deflection magnet group 600 points to the rotation center line 14 of the rotation support device 200. Of course, the specific numbers of the first deflection magnet group 500 and the second deflection magnet group 600 are not limited, as long as the first deflection magnet group 500 and the second deflection magnet group 600 are coplanar, and the output end of the second deflection magnet group 600 points to the rotation center line 14 of the rotation support device 200.

[0081] The deflection magnet bodies within the first deflection magnet group 500, the deflection magnet bodies within the second deflection magnet group 600, and the deflection magnet bodies of the deflection magnet groups within the synchrotron 400 all have focusing edges. That is, the synchrotron 400, the first deflection magnet group 500, and the second deflection magnet group 600 are all composed of multiple deflection magnet bodies with focusing edges. While achieving the deflection of the particle beam, they have a focusing function, which can eliminate the need for a separate focusing magnet, thereby greatly reducing the overall volume and weight of the particle therapy device. When the vertically arranged particle beam therapy device rotates, the rotation drive is simpler and does not require a larger power rotation drive, and at the same time, it is beneficial to the precision control of the rotational movement. It should be noted that the first deflection magnet group 500 and the second deflection magnet group 600 can also use magnets without the edge focusing function and cooperate with a separate focusing magnet for focusing.

[0082] The irradiation head 800 is connected to the end of the second deflection magnet group 600, and the particle beam is emitted from the irradiation head 800 to the target tissue. Further optimally, a focusing magnet can be provided between the irradiation head 800 and the second deflection magnet group 600.

[0083] In some other embodiments, the number of the first deflection magnet bodies 410 in each group of deflection magnet groups in the synchrotron 400 can be one. At this time, the number of the second deflection magnet bodies 510 and the number of the third deflection magnet bodies 610 should also be one. Specifically, one deflection magnet body realizes a 90° deflection. Among them, the synchrotron requires 4 first deflection magnet bodies 410 to complete one revolution of the beam. Or one deflection magnet body realizes a 60° deflection, and the synchrotron requires 6 first deflection magnet bodies 410 to complete one revolution of the beam. It can be seen that the deflection angle of the deflection magnet body is not limited, as long as the deflection requirement is met, and the number of deflection magnet bodies in the synchrotron should enable the beam to complete one revolution. It should be noted that in this embodiment, a separate focusing magnet needs to be provided before and after each deflection magnet body to avoid beam divergence.

[0084] Compared with the structure in which the synchrotron 400 and the beam transport device are arranged separately, the synchrotron 400, the first deflection magnet group 500 and the second deflection magnet group 600 integrated on the rotary support device 200 can significantly save space. Moreover, the particle beam output by the synchrotron 400 enters the first deflection magnet group 500 along the tangent direction of the input end of the first deflection magnet group 500. Therefore, there is no need to arrange deflection magnets and focusing magnets at the input end of the first deflection magnet group 500, thereby reducing the overall height of the particle beam therapy device. The synchrotron 400 is inclined, further reducing the height of the synchrotron 400, thereby reducing the overall axial length of the particle beam therapy device. The reduction of the height and length can reduce the space occupied by the particle beam therapy device, and further save the construction cost and construction difficulty of the building accommodating the particle beam therapy device as a whole, realizing an ultra-small synchrotron 400 particle beam therapy device.

[0085] Combined Figures 1 to 3 、 Figures 7 to 9 As shown, the output end of the first deflection magnet group 500 is located on one side of the axial direction of the rotary support device 200. That is, the movement trajectory of the particle beam in the first deflection magnet group 500, or the extension line of its movement trajectory crosses above the rotary support device 200, so that the second deflection magnet group 600 can cross the rotary support device 200, or the second deflection magnet group 600 can pass through the rotary support device 200, thereby reducing the axial length of the particle beam therapy device, and further reducing the overall area of the particle beam therapy device, which is beneficial to realizing the miniaturization of the particle beam therapy device as a whole.

[0086] Specifically, in some embodiments, the particle beam within the first deflection magnet group 500 crosses above the axial direction of the rotary support device 200, such that the output end of the first deflection magnet group 500 is located outside the rotary support device 200. In other embodiments, the extension line of the movement trajectory of the particle beam within the first deflection magnet group 500 crosses above the rotary support device 200, where the extension line here refers to the extension line along the circumferential direction of the movement trajectory of the particle beam. This design enables the output end of the first deflection magnet group 500 to be above the axial direction of the rotary support device 200, and further enables the connection between the first deflection magnet group 500 and the second deflection magnet group 600 to be above the axial direction of the rotary support device 200. This connection refers to the position where the second deflection magnet group 600 is directly connected to the first deflection magnet group 500, or the position where the second deflection magnet group 600 is connected to the first deflection magnet group 500 through a connecting pipe. The output end of the first deflection magnet group 500 can also be located inside the rotary support device 200. It should be noted that in this design, after the second deflection magnet group 600 is connected to the first deflection magnet group 500, the second deflection magnet group 600 can cross the rotary support device 200, such that the output end of the second deflection magnet group 600 is located outside the rotary support device 200. In other embodiments, the first deflection magnet group 500 passes through the rotary support device 200 or the second deflection magnet group 600 passes through the rotary support device 200. It can be seen that the design of the first deflection magnet group 500 and the second deflection magnet group 600 should ensure that the output end of the second deflection magnet group 600 is located outside the rotary support device 200, and the position of the output end of the second deflection magnet group 600 should meet the design requirements.

[0087] Combined with Figures 1 to 10 As shown, in some embodiments, the first delivery channel 910 is perpendicular to the horizontal plane or the support surface of the base. At this time, the deflection direction within the first deflection magnet group 500 is not restricted. Combined with Figures 1 to 5 As shown, the output end of the first deflection magnet group 500 faces the side of the synchrotron 400 where the first delivery channel 910 is connected; or combined with Figures 7 to 10 As shown, the output end of the first deflection magnet group 500 faces the side of the rotary support device 200 away from the first delivery channel 910. Preferably, the structures and parameters of the deflection magnet groups in the first deflection magnet group 500 and the second deflection magnet group 600 and the number of deflection magnet bodies are the same as those in the synchrotron 400, making the design and installation of the particle beam therapy device as a whole more convenient.

[0088] Further preferably, as Figure 5As shown, the angle between the plane 10 where the synchrotron is located and the vertical plane 15 perpendicular to the rotation center line is equal to the angle between the beam direction of the first transport channel 910 and the plane where the synchrotron 400 is located. The center line of the synchrotron 400 coincides with the vertical plane 15 perpendicular to the rotation center line, that is, the plane 10 where the synchrotron is located will not tilt in other directions. For example Figure 14 in, it will not tilt left and right, making the overall design and installation of the particle beam therapy device more convenient. In some other embodiments, the center line of the synchrotron 400 intersects with the vertical plane 15 perpendicular to the rotation center line, that is Figure 14 taking the direction in as an example, the particle beam therapy device can also tilt in the left and right directions. The center line of the synchrotron 400 is the vertical line from the center point of the particle movement trajectory in the synchrotron 400 to the plane 10 where the synchrotron is located. It should be noted that Figure 14 is the Figure 3 where other devices are hidden, and it is only for showing the vertical plane between the particle beam movement trajectory and the plane where the particle beam movement trajectory of the synchrotron 400 is located.

[0089] Further optimized, the tangent direction of the output end of the first deflection magnet group 500 is the horizontal direction or parallel to the support surface of the base. At this time, the plane where the first deflection magnet group 500 is located and the plane where the second deflection magnet group 600 is located are coplanar, making the overall design and installation of the particle beam therapy device more convenient. When designing and installing, it only needs to ensure that they are in the same plane; and there is no need for a focusing magnet to connect between the two deflection magnet groups, reducing the axial length of the particle beam therapy device, while reducing the equipment cost; and the particle beam output from the first deflection magnet group 500 can directly enter the second deflection magnet group 600, without setting a deflection magnet, further reducing the axial length of the particle beam therapy device.

[0090] In some other embodiments, as Figure 11 shown, the first transport channel 910 tilts towards the side of the rotary support device 200, that is, tilts towards the length direction of the rotation center line 14 of the rotary support device 200, so that the first transport channel 910 and the vertical plane 15 perpendicular to the rotation center line form an angle. The output end of the first deflection magnet group 500 is arranged on the same side of the synchrotron 400 as the first transport channel 910 ( Figure 11 is the right side in), at this time, in order to make the particle beam output from the first deflection magnet group 500 enter the second deflection magnet group 600 along the tangent direction of the input end of the second deflection magnet group 600, a first deflection magnet 902 needs to be connected to the output end of the first deflection magnet group 500.

[0091] In some other preferred embodiments, the output end of the first deflection magnet group 500 extends towards the side of the rotary support device 200 away from the first conveying channel 910 (not shown in the figure). This design can further shorten the axial length of the particle beam therapy device and further reduce the volume of the particle beam therapy device. In order to make the particle beam output by the first deflection magnet group 500 enter the second deflection magnet group 600 along the tangent direction of the input end of the second deflection magnet group 600, a first deflection magnet 902 is also connected to the output end of the first deflection magnet group 500. Further optimally, a second conveying channel 900 is provided between the first deflection magnet group 500 and the second deflection magnet group 600. The particle beam deflected by the first deflection magnet 902 enters the second conveying channel 900 along the beam conveying direction of the second conveying channel 900. The connection between the output end of the second conveying channel 900 and the second deflection magnet group 600 is tangent. The length of the second conveying channel 900 is set according to requirements, so that the output end of the second deflection magnet group 600 points to the rotation center line 14 of the rotary support device 200. In order to prevent the deflected particle beam from diverging, a first focusing magnet 901 is provided on the outer periphery of the second conveying channel 900.

[0092] When the number of the first deflection magnet bodies 510 and the second deflection magnet bodies 610 is both 4, by setting the first deflection magnet 902 and the first focusing magnet 901, the length of the second conveying channel 900 can be shortened, which plays a role in reducing the axial length of the particle beam therapy device. If the radiation of the synchrotron 400 and the injection device 300 is too large during treatment, it is necessary to control the distance between the synchrotron 400 and the patient not to be too small and increase the shielding device. At this time, the length of the second conveying channel 900 should be adjusted according to needs.

[0093] Further optimized, the first deflection magnet 902 deflects the particle beam output from the first deflection magnet group 500 to the horizontal direction or parallel to the support surface of the base. This design method makes the tangential direction of the input end of the second deflection magnet group 600 parallel to the horizontal direction or the support surface of the base, so that the particle beam output from the second deflection magnet group 600 is perpendicular and directed towards the rotation center line 14 of the rotary support device 200. By adopting the implementation scheme that the input end of the second deflection magnet group 600 is horizontal and the output end is vertical, the second deflection magnet group 600 can directly adopt the same deflection magnet group as the synchrotron 400, that is, the structure, parameters and the number of the deflection magnet bodies are the same, which simplifies the control system. The particle beam output from the second deflection magnet group 600 being perpendicular and directed towards the rotation center line 14 of the rotary support device 200 can make the particle beam substantially perpendicular to the support surface of the lying patient and the virtual central axis thereof. This central axis can be set to pass through the tumor position of the patient and pass through the rotation center line 14, preferably collinear with the rotation center line 14. After rotating the synchrotron 400, the beam can be rotated in a plane perpendicular to the support surface and the virtual central axis of the patient's torso.

[0094] As Figure 15 shown, the plane where the first deflection magnet group 500 is located forms an angle with the plane where the second deflection magnet group 600 is located. Thus, the second deflection magnet group 600 can deflect the particle beam downward. At the same time, because there is a certain angle between the plane where the first deflection magnet group 500 is located and the plane where the second deflection magnet group 600 is located, in order to avoid the divergence of the particle beam, a plurality of first focusing magnets 901 are arranged between the first deflection magnet group 500 and the second deflection magnet group 600. Specifically, since the first deflection magnet group 500 and the second deflection magnet group 600 are connected through the second conveying channel 900, the first focusing magnets 901 are arranged on the outer periphery of the second conveying channel 900. Among them, the number of the first focusing magnets 901 can be one, two or more, and they are designed according to the length of the second conveying channel 900. Of course, on the premise of ensuring beam focusing and during treatment, the radiation of the synchrotron 400, the injection device 300, etc. is not too large or can be reduced to an acceptable range after being shielded by necessary radiation shielding devices. In order to reduce the length of the second conveying channel 900, the fewer the number of the first focusing magnets 901, the better. In the solutions of some embodiments of this patent, the radiation of the synchrotron 400, the injection device 300, etc. itself is within the allowable range or can be reduced to an acceptable range after shielding.

[0095] The first deflection magnet group 500 deflects the particle beam from the transport direction of the first transport channel 910 to a set direction. The first deflection magnet 902 changes the direction of the particle beam output from the first transport channel 910 to the horizontal direction. The second deflection magnet group 600 can change the particle beam from the horizontal direction to the vertical direction, which can simplify the structure of the particle beam treatment device, facilitate installation, and avoid the phenomenon that the angle between the second transport channel 900 and the reference object cannot be accurately positioned during installation, resulting in installation errors and further leading to treatment accidents during the treatment of the particle beam treatment device. Moreover, this design method reduces the heights of the first deflection magnet group 500 and the second deflection magnet group 600, thereby reducing the height of the overall particle beam treatment device and further saving the volume of the building accommodating the particle beam treatment device. It should be noted that this design method should satisfy that the irradiation head 800 is above the rotation center line 14 of the rotary support device 200, and there is a certain distance between the irradiation head 800 and the rotation center line 14 of the rotary support device 200 to accommodate the patient.

[0096] The first deflection magnet group 500 deflects the particle beam from the transport direction of the first transport channel 910 to a set direction. The first deflection magnet 902 changes the direction of the particle beam output from the first transport channel 910 to the horizontal direction. The second deflection magnet group 600 can change the particle beam from the horizontal direction to the vertical direction, which can simplify the structure of the particle beam treatment device, facilitate installation, and avoid the phenomenon that the angle between the second transport channel 900 and the reference object cannot be accurately positioned during installation, resulting in installation errors and further leading to treatment accidents during the treatment of the particle beam treatment device. Moreover, this design method reduces the heights of the first deflection magnet group 500 and the second deflection magnet group 600, thereby reducing the height of the overall particle beam treatment device and further saving the volume of the building accommodating the particle beam treatment device. It should be noted that this design method should satisfy that the irradiation head 800 is above the rotation center line 14 of the rotary support device 200, and there is a certain distance between the irradiation head 800 and the rotation center line 14 of the rotary support device 200 to accommodate the patient.

[0097] The plane where the particle beam deflected by the first deflection magnet 902 is located coincides with the plane where the first deflection magnet group 500 is located, that is, one of the planes where the particle beam deflected by the first deflection magnet 902 is located coincides with the plane where the particle beam movement track in the first deflection magnet group 500 is located. This design method can better deflect the particle beam.

[0098] Such as Figure 14As shown, a first delivery channel 910 is connected to the synchrotron 400. A vertical plane 13 between the particle beam movement trajectory in the first delivery channel 910 and the plane where the particle beam movement trajectory of the synchrotron 400 is located is tangent to the particle beam trajectory before being led out from the synchrotron 400, and the vertical plane 13 between the particle beam movement trajectory in the first delivery channel 910 and the plane where the particle beam movement trajectory of the synchrotron 400 is located is perpendicular to the horizontal plane or the support plane of the base, so that the particle beam can enter the first delivery channel 910. Further optimally, a second focusing magnet 911 is provided on the outer periphery of the first delivery channel 910.

[0099] It should be noted that in this patent, the particle beam movement trajectory in the deflection magnet body or the deflection magnet group or the synchrotron 400 or the delivery channel does not necessarily remain unchanged. Additionally, when the number of deflection magnet bodies in the synchrotron 400 and the first deflection magnet group 500 or the second deflection magnet group 600 is multiple, the beam movement trajectory in the connection channel between the deflection magnet bodies is not necessarily arc-shaped. Therefore, the central angle of the deflection magnet group mentioned in this patent is the central angle of a virtual arc, and this arc is formed by fitting the movement trajectories of the beam in each deflection magnet body in the deflection magnet group.

[0100] In this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0101] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments described herein, but rather will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A particle beam therapy device for emitting a particle beam towards a target tissue, characterized in that, it comprises: A fixed support device (100), including a base, on which a driving rotation mechanism is provided for serving as a support foundation; A rotating support device (200), rotatably arranged on the fixed support device (100); when the rotating support device (200) makes a rotational movement, it has a rotation center line (14), and the power provided by the driving rotation mechanism can make the rotating support device (200) rotate around the rotation center line (14); A synchrotron (400), arranged inside the rotating support device (200) for accelerating the particle beam, the synchrotron (400) has a deflection magnet, the synchrotron (400) is inclinedly arranged inside the rotating support device (200), and makes the plane where the synchrotron (400) is located form an angle with the vertical plane, the plane where the synchrotron (400) is located and the vertical plane perpendicular to the rotation center line (14) of the rotating support device (200) form an angle, and a first delivery channel (910) is connected to the synchrotron (400); A first deflection magnet group (500), arranged on the rotating support device (200) for receiving and delivering the particle beam output from the first delivery channel (910), the first deflection magnet group (500) is arc-shaped, and the particle beam output from the first delivery channel (910) enters the first deflection magnet group (500) along the tangent direction of the input end of the first deflection magnet group (500), and the output end of the first deflection magnet group (500) is located on one side of the axial direction of the rotating support device (200); A second deflection magnet group (600), connected to the first deflection magnet group (500) for receiving and transmitting the particle beam output from the first deflection magnet group (500), the second deflection magnet group (600) is arc-shaped, and the particle beam output from the first deflection magnet group (500) enters the second deflection magnet group (600) along the tangent direction of the input end of the second deflection magnet group (600), the output end of the second deflection magnet group (600) extends out of the rotating support device (200), and the output end of the second deflection magnet group (600) points to the rotation center line (14) of the rotating support device (200); An irradiation head (800), connected to the end of the second deflection magnet group (600), and the particle beam is emitted from the irradiation head (800) to the target tissue.

2. The particle beam therapy device according to claim 1, characterized in that, the tangent direction of the output end of the first deflection magnet group (500) is a horizontal direction or parallel to the support surface of the base.

3. The particle beam therapy device according to claim 1, characterized in that, the plane where the first deflection magnet group (500) is located and the plane where the second deflection magnet group (600) is located are coplanar.

4. The particle beam therapy device according to claim 1, characterized in that, the first conveying channel (910) is perpendicular to the horizontal plane or the supporting surface of the base.

5. The particle beam therapy device according to claim 1 or 4, characterized in that, the structure and parameters of the first deflection magnet group (500) and the second deflection magnet group (600) are the same as those of the deflection magnet group in the synchrotron (400).

6. The particle beam therapy device according to claim 1 or 4, characterized in that, the number of the deflection magnet bodies of the first deflection magnet group (500) and the second deflection magnet group (600) is the same as that of the deflection magnet group in the synchrotron (400).

7. The particle beam therapy device according to claim 6, characterized in that, the number of the deflection magnet bodies of the first deflection magnet group (500) and the second deflection magnet group (600) in the synchrotron (400) is four.

8. The particle beam therapy device according to claim 1, characterized in that, the first conveying channel (910) is inclined towards one of the side surfaces of the rotary support device (200).

9. The particle beam therapy device according to claim 8, characterized in that, the output end of the first deflection magnet group (500) extends towards the side of the rotary support device (200) away from the first conveying channel (910).

10. The particle beam therapy device according to claim 8, characterized in that, the plane where the first deflection magnet group (500) is located forms an angle with the plane where the second deflection magnet group (600) is located.

11. The particle beam therapy device according to claim 8, characterized in that, a first deflection magnet (902) is connected to the output end of the first deflection magnet group (500), and the particle beam deflected by the first deflection magnet (902) enters the second deflection magnet group (600) along the tangential direction of the input end of the second deflection magnet group (600).

12. The particle beam therapy device according to claim 11, characterized in that, the first deflection magnet (902) deflects the particle beam output by the first deflection magnet group (500) to the horizontal direction or parallel to the supporting surface of the base.

13. The particle beam therapy device according to claim 8, characterized in that, a second conveying channel (900) is provided between the first deflection magnet group (500) and the second deflection magnet group (600), the particle beam deflected by the first deflection magnet (902) enters the second conveying channel (900), and the connection between the output end of the second conveying channel (900) and the second deflection magnet group (600) is tangent.

14. The particle beam therapy device according to claim 13, characterized in that, the second conveying channel (900) is arranged in the horizontal direction or parallel to the supporting surface of the base.

15. The particle beam therapy device according to claim 13, characterized in that, A first focusing magnet (901) is provided on the outer periphery of the second transport channel (900).

16. The particle beam therapy device according to claim 1, wherein, annular structures are provided on both sides of the rotary support device (200). The annular structures are coaxial with the rotary support device (200), the annular structures are rotatably provided on the fixed support device (100), and the outer diameter of the annular structures is smaller than the radial distance at the outermost radial position of the rotary support device (200).

17. The particle beam therapy device according to claim 1, wherein, the deflection magnet bodies in the first deflection magnet group (500), the deflection magnet bodies in the second deflection magnet group (600), and the deflection magnet bodies in the deflection magnet group in the synchrotron (400) all have focusing edges.

18. The particle beam therapy device according to claim 1, wherein, the angle between the plane in which the synchrotron (400) is located and the horizontal plane or the support surface of the base is 40° - 90°.

19. The particle beam therapy device according to claim 1, wherein, a fixed seat (420) for supporting the synchrotron (400) is provided in the rotary support device (200).

20. The particle beam therapy device according to claim 1, wherein, the particle beam output from the second deflection magnet group (600) is perpendicular to the rotation center line (14) of the rotary support device (200).

21. The particle beam therapy device according to claim 1, wherein, the plane in which the second deflection magnet group (600) is located is perpendicular to the horizontal plane or the support surface of the base.

22. The particle beam therapy device according to claim 1, wherein, the rotation center line (14) of the rotary support device (200) is arranged in the horizontal direction or is parallel to the support surface of the base.

23. The particle beam therapy device according to claim 1, wherein, the center line of the synchrotron (400) coincides with the vertical plane perpendicular to the rotation center line (14) of the rotary support device (200).

24. The particle beam therapy device according to claim 1, wherein, the center line of the synchrotron (400) intersects with the vertical plane perpendicular to the rotation center line (14) of the rotary support device (200).

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