Rotary channel structure and particle beam therapy system

Abstract

The utility model belongs to the technical field of particle beam therapy systems, and discloses a rotary channel structure and a particle beam therapy system. The rotary channel structure comprises two track plates and a plurality of channel cover plates. The two track plates are arranged in a spaced mode in the first direction, and track grooves are formed in the two track plates. The two ends, in the first direction, of each channel cover plate are movably connected with the rail grooves in the two sides correspondingly, the first end, in the second direction, of each channel cover plate is provided with an inserting part extending in the first direction, the second end, in the second direction, of each channel cover plate is provided with an inserting groove extending in the first direction, and the inserting part is inserted into the inserting groove in the first direction in the two adjacent channel cover plates. The inserting part of one channel cover plate can be connected with the inserting groove of the other channel cover plate in an inserted mode, and the two channel cover plates can rotate relative to each other. A particle beam treatment head of the particle beam treatment system can reciprocate along the track of the track groove and can drive the channel cover plate to move in the track groove. The channel cover plate is simple in connecting structure and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of particle beam therapy systems, and particularly relates to a rotating channel structure and a particle beam therapy system. Background Art

[0002] The particle beam therapy system in the field of high-end medical equipment includes a particle beam therapy head and a rotating channel. The particle beam therapy head can rotate along the rotation trajectory of the rotating channel to treat patients. A plurality of interconnected channel covers are arranged in the rotating channel. When the particle beam therapy head rotates, it can drive the channel covers to move in the rotating channel to cover the rotating channel and prevent gaps from appearing in the rotating channel.

[0003] In the prior art, two adjacent channel covers are connected by a rubber strip so that the channel covers are interconnected. Due to the flexible characteristics of the rubber strip itself, when the channel covers move in the rotating channel, the two adjacent channel covers can be arranged at an angle to adapt to the rotation trajectory of the rotating channel. However, the radiation oxidation resistance of the rubber strip is low. After long-term use, the aging of the rubber strip will lead to frequent replacement and maintenance, high failure rate, and many parts, which is not conducive to cost reduction. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotating channel structure and a particle beam therapy system, which reduce the assembly difficulty and failure rate of the channel covers.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A rotating channel structure for a particle beam therapy system, the particle beam therapy system including a particle beam therapy head, the rotating channel comprising:

[0007] Two track plates are provided, and the two track plates are arranged at intervals in a first direction and both the opposite side surfaces are provided with track grooves;

[0008] A plurality of channel covers are provided, and both ends of each channel cover in the first direction are movably connected to the track grooves on both sides respectively. A plugging portion extending in the first direction is provided at a first end of the channel cover in a second direction, and a plugging groove extending in the first direction is provided at a second end of the channel cover in the second direction. Among two adjacent channel covers, the plugging portion of one channel cover is plugged into the plugging groove of the other channel cover, and the two interconnected channel covers can rotate relative to each other. When the particle beam therapy head reciprocates along the trajectory of the track groove, a plurality of interconnected channel covers are directly or indirectly driven by the particle beam therapy head to move, and the first direction and the second direction are perpendicular to each other.

[0009] As an alternative, the plugging portion includes a connecting portion and a cylindrical portion extending along the first direction. The connecting portion is connected between the channel cover plate and the cylindrical portion. The cross-section of the plugging slot is a circle adapted to the cylindrical portion, and the plugging slot is provided with an opening penetrating the side wall of the plugging slot along the first direction. The cylindrical portion is plugged into the plugging slot, and both ends of the opening along the third direction can respectively abut against both ends of the connecting portion along the third direction to limit the rotation angle of the two channel cover plates. The first direction, the second direction, and the third direction are perpendicular to each other.

[0010] As an alternative, two auxiliary portions extending along the first direction are further provided at the first end of the channel cover plate. The two auxiliary portions are arranged on both sides of the connecting portion along the third direction. Among the two mutually connected channel cover plates, the second end of one channel cover plate is respectively limited within the two auxiliary portions of the other channel cover plate at both ends of the opening along the third direction.

[0011] As an alternative, the inner side surface of the auxiliary portion facing the connecting portion is set as an inner arc surface, and the outer side surfaces of the channel cover plate at both ends of the opening along the third direction are set as outer arc surfaces adapted to the inner arc surface.

[0012] As an alternative, both ends of the channel cover plate along the first direction are arranged in the track grooves on both sides through rollers.

[0013] As an alternative, four rollers are provided on each channel cover plate. The four rollers are divided into two groups and are respectively arranged at both ends of the channel cover plate along the first direction. The two rollers in each group are arranged at intervals along the second direction.

[0014] As an alternative, the roller is provided with a screw rod, and threaded holes matching the screw rod are provided at both ends of the channel cover plate along the first direction. The screw rod is threadedly connected to the corresponding threaded hole.

[0015] As an alternative, the channel cover plate is provided with a hollow groove penetrating along the first direction.

[0016] As an alternative, the channel cover plate is an aluminum part.

[0017] A particle beam therapy system includes a particle accelerator for providing a particle beam, a particle beam therapy head, and the rotary channel structure described in any of the above solutions.

[0018] The beneficial effects of the present utility model:

[0019] A rotating channel structure provided by the present utility model has a plugging part arranged at the first end of a channel cover plate and a plugging groove arranged at the second end of the channel cover plate. By plugging the plugging part of one channel cover plate into the plugging groove of another adjacent channel cover plate, the mutual connection of multiple channel cover plates can be achieved without using rubber parts for connection. Moreover, any two connected channel cover plates can rotate relative to each other to adapt to an orbital groove with a certain degree of curvature, which is convenient for disassembly and assembly, greatly reduces the maintenance frequency and maintenance difficulty, and saves a large amount of costs. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the rotating channel structure and the particle beam treatment head provided by an embodiment of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the channel cover plate involved in an embodiment of the present utility model;

[0022] Figure 3 is a connection schematic diagram of two channel cover plates involved in an embodiment of the present utility model Figure 1 ;

[0023] Figure 4 is a connection schematic diagram of two channel cover plates involved in an embodiment of the present utility model Figure 2 ;

[0024] Figure 5 is a connection schematic diagram of two channel cover plates involved in an embodiment of the present utility model Figure 3 ;

[0025] Figure 6 is a schematic structural diagram of the particle beam treatment system provided by an embodiment of the present utility model.

[0026] In the figure:

[0027] 1. Particle beam treatment head; 2. Rotating channel structure; 21. Track plate; 211. Track groove; 22. Channel cover plate; 221. Plugging part; 2211. Connecting part; 2212. Cylindrical part; 222. Plugging groove; 2221. Opening; 223. Auxiliary part; 224. Threaded hole; 225. Hollow groove; 23. Roller; 3. Treatment room; 4. Imaging device; 41. Imaging scanning space; 5. Carrier; 6. Robot arm. Detailed Embodiment

[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar components or components with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, but should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "under", and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0031] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] As Figure 1 and Figure 6 shown, the embodiment of the present utility model provides a particle beam therapy system, which includes a particle beam therapy head 1 and a rotation channel structure 2 provided in the embodiment of the present utility model. The particle beam therapy head 1 can rotate along the trajectory of the rotation channel structure 2 to perform rehabilitation treatment on a patient. The particle beam therapy system may be a radiotherapy system, specifically a proton therapy system or a heavy ion therapy system.

[0033] The particle beam therapy system further includes a treatment room 3, an imaging device 4, a carrier 5, a robotic arm 6, a particle accelerator (not shown) for providing a particle beam, and a rotating gantry (not shown) for installing and fixing the particle accelerator and rotating with the particle accelerator. The imaging device 4 is installed in the treatment room 3, such as a CT imaging device. A carrier 5 for carrying an object to be treated is also installed in the treatment room 3. The carrier 5 may be a hospital bed. Driven by the robotic arm 6, the carrier 5 can move freely to drive the patient into the imaging scanning space 41 of the imaging device 4 for CT imaging or move to the vicinity of the particle beam therapy head 1 to receive radiotherapy. The imaging device 4 is located on one side of the particle beam therapy head 1, which is conducive to positioning the part to be treated of the patient before radiotherapy.

[0034] AsFigures 1 to 5 As shown, the rotating channel structure 2 includes an orbital plate 21 and a channel cover plate 22. Among them, there are two orbital plates 21, and the two orbital plates 21 are arranged at intervals along the first direction, and the opposite side surfaces of the two orbital plates 21 are both provided with orbital grooves 211. There are multiple channel cover plates 22, and both ends of each channel cover plate 22 along the first direction are movably connected to the orbital grooves 211 on both sides respectively. A plug-in portion 221 extending along the first direction is provided at the first end of each channel cover plate 22 along the second direction, and a plug-in slot 222 extending along the first direction is provided at the second end of each channel cover plate 22 along the second direction. Among two adjacent channel cover plates 22, the plug-in portion 221 of one channel cover plate 22 can be plugged into the plug-in slot 222 of the other channel cover plate 22. During installation, the plug-in portion 221 of one channel cover plate 22 is plugged into the plug-in slot 222 of the other channel cover plate 22 along the first direction. After the plug-in portion 221 of one channel cover plate 22 is plugged into the plug-in slot 222 of the other channel cover plate 22, the plug-in portion 221 can rotate along the axis direction of the plug-in slot 222 relative to the plug-in slot 222, so that the two interconnected channel cover plates 22 can rotate relative to each other to adapt to the orbital groove 211 with a certain degree of curvature. The particle beam treatment head 1 can reciprocate along the trajectory of the orbital groove 211 and can drive multiple interconnected channel cover plates 22 to move in the orbital groove 211.

[0035] The plug-in portion 221 is provided at the first end of the channel cover plate 22 in the rotating channel structure 2, and the plug-in slot 222 is provided at the second end of the channel cover plate 22, so that the plug-in portion 221 of one channel cover plate 22 and the plug-in slot 222 of the other channel cover plate 22 are plugged between two adjacent channel cover plates 22. Without using rubber parts for connection, the mutual connection of multiple channel cover plates 22 can be realized, and any two connected channel cover plates 22 can also rotate relative to each other to adapt to the orbital groove 211 with a certain degree of curvature. The disassembly and assembly are convenient, and the maintenance frequency and maintenance difficulty are greatly reduced, which is very beneficial to cost saving and makes proton therapy within reach.

[0036] In this embodiment, the orbital plate 21 is a C-shaped structure, and the trajectory of the orbital groove 211 is also C-shaped.

[0037] Specifically, as Figure 2 and Figure 3As shown, the insertion part 221 includes a connecting part 2211 extending in the first direction and a cylindrical part 2212. The connecting part 2211 is connected between the first end of the channel cover plate 22 and the cylindrical part 2212. The cross-section of the insertion slot 222 is a circle adapted to the cylindrical part 2212, and the insertion slot 222 is provided with an opening 2221 penetrating the side wall of the insertion slot 222 in the first direction. The width of the opening 2221 in the third direction is smaller than the diameter of the cylindrical part 2212. The cylindrical part 2212 is inserted into the insertion slot 222, and the connecting part 2211 is located in the opening 2221. When the two mutually connected channel cover plates 22 rotate relative to each other, the two ends of the opening 2221 in the third direction can respectively abut against the two ends of the connecting part 2211 in the third direction to limit the rotation angle of the two channel cover plates 22.

[0038] In this embodiment, the maximum rotation angle between the two mutually connected channel cover plates 22 is 50°, so as to provide a 50° rotation space to adapt to different types of particle beam therapy systems. Refer to Figure 4 , after the two channel cover plates 22 rotate towards the direction of their upper end faces to the limit, the included angle between the two channel cover plates 22 is 157°, that is, the two channel cover plates 22 can rotate 23° towards the direction of their upper end faces; refer to Figure 5 , after the two channel cover plates 22 rotate towards the direction of their lower end faces to the limit, the included angle between the two channel cover plates 22 is 153°, that is, the two channel cover plates 22 can rotate 27° towards the direction of their lower end faces.

[0039] The first direction, the second direction and the third direction are perpendicular to each other.

[0040] When the mutually connected channel cover plates 22 do not rotate, in order to ensure that the upper end faces of the channel cover plates 22 are in the same plane, the distance between the center of the cylindrical part 2212 and the upper end face of the channel cover plate 22 in the third direction is equal to the distance between the center of the insertion slot 222 and the upper end face of the channel cover plate 22.

[0041] In order to improve the stability between the two mutually connected channel cover plates 22, referring to Figures 2 - 3 again, the first end of the channel cover plate 22 is further provided with an auxiliary part 223 extending in the first direction. The two auxiliary parts 223 are arranged on both sides of the connecting part 2211 in the third direction. In the two mutually connected channel cover plates 22, the second end of one channel cover plate 22 is respectively limited in the two auxiliary parts 223 of the other channel cover plate 22 at both ends of the opening 2221 in the third direction.

[0042] Specifically, the inner sides of the two auxiliary parts 223 facing the connecting part 2211 are both set as inner arc surfaces, and the two outer sides of the channel cover plate 22 along the third direction at the opening 2221 are set as outer arc surfaces adapted to the inner arc surfaces. The inner arc surfaces of the two auxiliary parts 223 are respectively rotationally matched with the corresponding outer arc surfaces, so that the two auxiliary parts 223 provide support for the second end of the other channel cover plate 22 without affecting the rotational flexibility of the two channel cover plates 22. The structural design is more reasonable and the stability is stronger.

[0043] In this embodiment, the centers of the inner arc surface and the outer arc surface coincide with the center of the cylindrical part 2212.

[0044] In order to make the channel cover plate 22 move more smoothly in the track groove 211, rollers 23 are arranged at both ends of the channel cover plate 22 along the first direction, and the rollers 23 are in rolling connection with the track groove 211.

[0045] Furthermore, each channel cover plate 22 is provided with four rollers 23. The four rollers 23 are divided into two groups and are respectively arranged at both ends of the channel cover plate 22 along the first direction. The two rollers 23 in each group of rollers 23 are arranged at intervals along the second direction. This structure makes the connection between the channel cover plate 22 and the two side track grooves 211 more stable.

[0046] Optionally, the roller 23 is provided with a screw rod, and threaded holes 224 matching the screw rod are arranged at both ends of the channel cover plate 22 along the first direction. The screw rod is in threaded connection with the corresponding threaded hole 224 to make the connection between the roller 23 and the channel cover plate 22 more convenient.

[0047] Optionally, the roller 23 can be processed from polyurethane to effectively reduce the noise during rolling.

[0048] In order to reduce the weight of the channel cover plate 22, the channel cover plate 22 is provided with a hollow groove 225 penetrating along the first direction.

[0049] Furthermore, three square openings communicating with the hollow groove 225 are further arranged on the lower end surface of the channel cover plate 22 along the third direction to further reduce the weight of the channel cover plate 22.

[0050] Optionally, the channel cover plate 22 is an aluminum part, and it can adopt aluminum alloy with the label of 6061-T6. While reducing the weight of the channel cover plate 22, it can also ensure that its mechanical properties meet the requirements.

[0051] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A rotating channel structure for use in a particle beam therapy system, wherein the particle beam therapy system comprises a particle beam therapy head (1), characterized in that: The rotating channel structure (2) comprises: Two track plates (21) are provided, and the two track plates (21) are arranged at intervals along a first direction and both sides facing each other are provided with track grooves (211); A plurality of channel cover plates (22) are provided, and the two ends of each channel cover plate (22) along the first direction are movably connected to the track grooves (211) on both sides respectively; the first end of the channel cover plate (22) along the second direction is provided with a plug-in portion (221) extending along the first direction; the second end of the channel cover plate (22) along the second direction is provided with a plug-in groove (222) extending along the first direction; in two adjacent channel cover plates (22), the plug-in portion (221) of one channel cover plate (22) is plugged into the plug-in groove (222) of the other channel cover plate (22), and the two mutually connected channel cover plates (22) can rotate relative to each other; when the particle beam therapy head (1) reciprocates along the track of the track groove (211), the plurality of mutually connected channel cover plates (22) are directly or indirectly driven by the particle beam therapy head (1) to move, and the first direction and the second direction are perpendicular to each other.

2. The rotating channel structure according to claim 1, characterized in that: The plug-in portion (221) comprises a connecting portion (2211) and a cylindrical portion (2212) extending along the first direction, the connecting portion (2211) being connected between the channel cover plate (22) and the cylindrical portion (2212), the cross-section of the plug-in slot (222) being a circle adapted to the cylindrical portion (2212), and the plug-in slot (222) being provided with an opening (2221) penetrating through a side wall of the plug-in slot (222) along the first direction, the cylindrical portion (2212) being plugged into the plug-in slot (222), and the two ends of the opening (2221) along the third direction being able to respectively abut against the two ends of the connecting portion (2211) along the third direction to limit the rotation angle of the two channel cover plates (22), and the first direction, the second direction and the third direction being perpendicular to each other.

3. The rotating channel structure according to claim 2, characterized in that: The first end of the channel cover plate (22) is further provided with two auxiliary parts (223) extending along the first direction, and the two auxiliary parts (223) are arranged on both sides of the connecting part (2211) along the third direction. In the two mutually connected channel cover plates (22), the second end of one channel cover plate (22) is respectively limited in the two auxiliary parts (223) of the other channel cover plate (22) at the two ends of the opening (2221) along the third direction.

4. The rotating channel structure according to claim 3, characterized in that: The inner side surface of the auxiliary portion (223) facing the connecting portion (2211) is configured as an inner arc surface, and the two outer side surfaces of the channel cover plate (22) along the third direction at the opening (2221) are configured as outer arc surfaces that match the inner arc surface.

5. The rotating channel structure according to claim 1, characterized in that: The two ends of the channel cover plate (22) along the first direction are arranged in the track grooves (211) on both sides through rollers (23).

6. The rotating channel structure according to claim 5, characterized in that: Four rollers (23) are arranged on each channel cover plate (22); the four rollers (23) are arranged in groups of two at two ends of the channel cover plate (22) along the first direction; and two rollers (23) in each group of rollers (23) are arranged at intervals along the second direction.

7. The rotating channel structure according to claim 5, characterized in that: The roller (23) is provided with a screw rod, and the channel cover plate (22) is provided with threaded holes (224) matching the screw rod at both ends along the first direction, and the screw rod is threadedly connected with the corresponding threaded hole (224).

8. The rotating channel structure according to claim 1, characterized in that: The channel cover plate (22) is provided with a hollow groove (225) penetrating along the first direction.

9. The rotating channel structure according to claim 1, characterized in that: The channel cover plate (22) is an aluminum part.

10. A particle beam therapy system, characterized in that: The invention comprises a particle accelerator for providing a particle beam, a particle beam therapy head (1) and a rotating channel structure (2) as claimed in any one of claims 1 to 9.

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