Rotating floor and proton therapy system

Abstract

The application discloses a rotating floor and a proton treatment system, wherein the rotating floor comprises a frame assembly and a floor assembly arranged on the frame assembly; the frame assembly comprises a main body section provided with a moving groove for avoiding the treatment head, the extension profile of the main body section is an open path and forms an opening; two free ends of the main body section are respectively connected with extension sections, and the extension sections are respectively provided with extension grooves in communication with the moving groove; the frame assembly is provided with the floor assembly, the floor assembly is used for being connected with the treatment head and being driven by the treatment head, the floor assembly and the treatment head completely cover the part of the moving groove and the extension groove exposed to the treatment room, and the part of the floor assembly exceeding the moving groove is accommodated in the extension groove, so that the structure of the rotating floor and the proton treatment system adopting the rotating floor is simplified, the proton treatment system is miniaturized, and the proton treatment is accessible.

Description

Technical Field

[0001] This invention relates to the field of proton therapy equipment technology, and more particularly to a rotating floor and a proton therapy system. Background Technology

[0002] Proton therapy is a treatment method that uses a high-energy proton beam to precisely target and treat lesions, such as tumors. During treatment, the high-energy proton beam is generated by a proton accelerator and emitted through a treatment head. To ensure precise targeting of the lesion, the angle of the treatment head needs to be adjusted; therefore, the treatment head can be configured to rotate around the patient.

[0003] To enable the rotation of the treatment head, proton therapy equipment requires clearance grooves for the treatment head to move within. Existing treatment heads typically rotate 360°, thus necessitating 360° clearance grooves. Part of these grooves lies on the treatment room floor, causing a depression in the floor and potentially posing a risk of personnel falling into it.

[0004] To prevent falls, one existing method involves a ring-shaped floor connecting the drive motor and the treatment head, with the floor covering a clearance groove for the treatment head's movement. When the treatment head moves, the drive motor controls the floor to retract or unfold, allowing the floor to move synchronously with the treatment head and continuously cover the clearance groove to prevent falls. However, this method of using a ring-shaped floor with a drive motor does not facilitate further simplification of the proton therapy device's structure. Summary of the Invention

[0005] The purpose of this invention is to provide a rotating floor and a proton therapy system for simplifying the structure of the rotating floor and the proton therapy system using the rotating floor.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A rotating floor includes a frame assembly and a floor assembly disposed on the frame assembly; the frame assembly includes a main body segment having a movable groove for avoiding a treatment head, the extended profile of the main body segment being an open path and forming an opening; two free ends of the main body segment are respectively connected to extension segments, the extension segments extending to a wall embedded in a treatment chamber, and the portions of the extension segments not engaging with the treatment head being shielded by the treatment chamber, the extension segments each having an extension groove communicating with the movable groove;

[0008] The frame assembly is provided with a floor assembly for connection to and driven by the treatment head. The extension length of the floor assembly is greater than the extension length of the moving slot. The combination formed by the floor assembly and the treatment head maintains complete coverage of the portions of the moving slot and the extension slot exposed in the treatment chamber during movement.

[0009] The portion of the floor assembly extending beyond the movable slot is housed within the extension slot, and the extension slots of the two extension sections each have reserved movable spaces. The floor assembly is driven by the treatment head to move into or out of the movable spaces.

[0010] Preferably, the extension length of the extension groove is greater than or equal to the maximum length that the floor assembly can extend beyond the corresponding end of the moving groove.

[0011] Preferably, the upper free end of the main body segment is connected to a first extension segment, and the lower free end of the main body segment is connected to a second extension segment; the first extension segment includes an inclined segment that rises obliquely from the main body segment and a first horizontal segment that extends horizontally from the inclined segment; the second extension segment includes a second horizontal segment that is connected to the main body segment and extends horizontally, a vertical segment that extends vertically, and a third horizontal segment that is connected to the vertical segment and extends horizontally.

[0012] The first extension section is covered by the top wall of the treatment room, the second horizontal section and the main body section are exposed in the treatment room so that the treatment head can move on the main body section and the second horizontal section, and the vertical section and the third horizontal section are covered by the bottom wall of the treatment room.

[0013] Preferably, the third horizontal segment is connected to a connecting piece, the connecting piece is provided with a foot support, and the foot support abuts against the ground to support the third horizontal segment;

[0014] The foot support is provided with a flexible buffer portion in the part that contacts the ground, the flexible buffer portion being used to absorb the vibration generated by the frame assembly; and / or, the connecting piece elastically deforms to absorb the vibration generated by the frame assembly.

[0015] Preferably, the floor assembly includes a first part and a second part, the first part and the second part being separated and forming a space for accommodating a treatment head;

[0016] One end of the first part is located within the main body segment and is used to connect with the treatment head, and the other end of the first part extends into the first extension segment; one end of the second part is located within the main body segment and is used to connect with the treatment head, and the other end of the second part extends into the second extension segment; the first part and the second part are synchronously driven by the treatment head.

[0017] Preferably, the first part is fixedly connected to a first connector, the first connector is movably connected to a second connector, and the first connector is capable of arc-shaped movement relative to the second connector, the second connector being used for fixed connection with the treatment head;

[0018] The second part is fixedly connected to a third connector, the third connector is movably connected to a fourth connector, and the third connector can move in an arc relative to the fourth connector. The fourth connector is used to be fixedly connected to the treatment head.

[0019] When the treatment head moves upward, the first connector moves inward relative to the second connector, and the third connector moves inward relative to the fourth connector; when the treatment head moves downward, the first connector moves outward relative to the second connector, and the third connector moves outward relative to the fourth connector.

[0020] Preferably, one of the first connector and the second connector is provided with a second rolling element, and the other is provided with an arc-shaped second rolling groove that mates with the second rolling element. The first connector and the second connector are movably connected by the mate of the second rolling element and the second rolling groove, so that the first part can move relative to the treatment head.

[0021] One of the third and fourth connectors is provided with a second rolling element, and the other is provided with an arc-shaped second rolling groove that mates with the second rolling element. The third and fourth connectors are movably connected by the cooperation of the second rolling element and the second rolling groove, so that the second part can move relative to the treatment head.

[0022] Preferably, the main body segment includes an arc-shaped portion, a straight portion, and a connecting portion connecting the arc-shaped portion and the straight portion, wherein the radius of the arc-shaped portion is R1, and the radius of the connecting portion is R2; the inclined segment and the first horizontal segment are connected by a first arc-shaped transition portion with a radius of R3; and the radius of the arc-shaped movement path of the first connector is R4.

[0023] Among them, R1:R2:R3:R4 is (8.9~9.1):(0.95~1.05):(0.45~0.55):(4.8~5.0).

[0024] Preferably, the radius of the arc-shaped moving path of the third connector is R5; the second horizontal segment and the vertical segment are connected by a second arc-shaped transition portion with a radius of R6;

[0025] Wherein, R1:R5:R6 is (16~20):(60~70):(13~17).

[0026] Preferably, a transition section is provided between the vertical segment and the third horizontal segment, wherein the part of the transition section connecting with the vertical segment is an arc-shaped profile with a radius of R7, and the part of the transition section connecting with the third horizontal segment is an arc-shaped profile with a radius of R8;

[0027] Among them, R1:R5:R6:R7:R8 is (16~20):(60~70):(13~17):(11~14):(16~20).

[0028] Preferably, the second rolling element is a bearing, and the outer periphery of the second rolling element is wrapped with a polyurethane layer.

[0029] Preferably, the floor assembly includes multiple floorboards and rubber components connecting adjacent floorboards. Each floorboard has a connecting groove at its end. A portion of the rubber component is embedded in the connecting groove of one floorboard, and another portion of the rubber component is embedded in the connecting groove of another floorboard. The multiple floorboards are connected by the rubber components to form a chain structure.

[0030] Preferably, the side of the floor is provided with a first rolling element, and the frame assembly is provided with a first rolling groove that cooperates with the first rolling element. The floor slides in the first rolling groove through the first rolling element, so that the floor assembly moves within the frame assembly.

[0031] Preferably, the floor is further provided with an anti-displacement buckle extending into the connecting groove, the anti-displacement buckle pressing against the rubber component located in the connecting groove to fix the rubber component.

[0032] Preferably, the floor includes a second surface facing away from the treatment area, and the second surface is provided with at least one perforated portion;

[0033] And / or, the floor includes a pair of opposing sides along the width direction of the frame assembly, each of the pair of sides being provided with a cutout.

[0034] A proton therapy system, comprising:

[0035] Any of the above rotating floor types;

[0036] The treatment head is connected to the rotating floor and is used to drive the rotating floor to rotate.

[0037] A proton accelerator for accelerating protons to provide a beam to the treatment head, the proton accelerator and the treatment head being located on opposite sides of the rotating floor.

[0038] Preferably, the main body section and the second horizontal section of the rotating floor are exposed to the treatment room, and the second horizontal section is pre-embedded in the bottom wall of the treatment room. The second horizontal section is fixedly connected to the main body section by fasteners, and the first extension section, the vertical section and the third horizontal section of the rotating floor are covered by the wall of the treatment room.

[0039] The treatment head rotates on the main body section and the second horizontal section, and the rotation angle of the treatment head is -5° to 185°.

[0040] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0041] By using the driving force of the treatment head to move the floor assembly, no additional drive mechanism is needed, effectively simplifying the structure of the rotating floor and reducing its manufacturing cost. By setting the extension path of the main body segment as an open path, the main body segment forms an open structure. When the patient moves into the floor assembly, the space inside the floor assembly connects with the rest of the treatment room, forming an open space. This effectively alleviates the patient's anxiety upon entering the treatment room, thereby ensuring the treatment process and effectiveness. Simultaneously, it reduces the space occupied by the rotating floor in the treatment room, ensuring its aesthetics, and further miniaturizes the proton therapy system. Medical equipment such as the treatment bed can move into the main body segment through openings, facilitating treatment operations.

[0042] By ensuring that the extension length of the floor assembly exceeds the extension length of the moving channel, the combination of the floor assembly and the treatment head can maintain complete coverage of the moving channel during movement. This means that as the treatment head rotates, all parts of the moving channel remain shielded, effectively preventing personnel from falling into the channel and also preventing external components from falling into the treatment room and causing injury to personnel or equipment. The inclusion of a movement space facilitates the movement of the floor assembly, preventing interference with other components when the floor assembly moves with the treatment head, thus better ensuring product quality. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the rotating floor and treatment head according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of the framework component according to an embodiment of the present invention;

[0045] Figure 3 This is a partial structural diagram of the frame component according to an embodiment of the present invention;

[0046] Figure 4 This is another partial structural schematic diagram of the framework component according to an embodiment of the present invention;

[0047] Figure 5 This is a partial structural schematic diagram of the rotating floor and treatment head according to an embodiment of the present invention;

[0048] Figure 6 This is a partial exploded view of the rotating floor and treatment head according to an embodiment of the present invention;

[0049] Figure 7 This is another partial structural schematic diagram of the rotating floor and treatment head according to an embodiment of the present invention;

[0050] Figure 8 This is another partial exploded view of the rotating floor and treatment head according to an embodiment of the present invention;

[0051] Figure 9 This is an exploded view of the framework components of an embodiment of the present invention;

[0052] Figure 10 This is a partial structural schematic diagram of the rotating floor according to an embodiment of the present invention;

[0053] Figure 11 This is a partial structural schematic diagram of the floor assembly according to an embodiment of the present invention;

[0054] Figure 12 This is a schematic diagram of the floor structure according to an embodiment of the present invention.

[0055] In the diagram: 100. Rotating floor; 1. Frame assembly; 11. Main body section; 111. Moving groove; 112. First rolling groove; 113. Opening; 114. Arc-shaped section; 115. Straight section; 116. Connecting section; 12. Extension section; 1211. Moving space; 121. Extension groove; 122. First extension section; 1221. First extension groove; 1222. Inclined section; 1223. First horizontal section; 1224. First arc-shaped transition section; 123. Second extension section; 1231. Second extension groove; 1232. Vertical section; 1233. Second horizontal section; 1234. Third horizontal section; 1235, connecting piece; 1236, foot support; 1237, transition section; 1238, second arc-shaped transition part; 2, floor assembly; 21, floor; 211, connecting groove; 212, first rolling element; 213, first surface; 214, second surface; 215, hollow part; 216, anti-displacement buckle; 22, rubber part; 23, first part; 231, first connecting element; 2311, second rolling element; 232, second connecting element; 2321, second rolling groove; 24, second part; 241, third connecting element; 242, fourth connecting element; 200, treatment head. Detailed Implementation

[0056] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided to make the invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0057] The terms used to express position and direction in this invention are illustrated with reference to the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0058] like Figures 1 to 10 As shown, the present invention provides a rotating floor 100, including a frame assembly 1 and a floor assembly 2. The frame assembly 1 has a groove for a treatment head 200 to rotate, allowing the treatment head 200 to rotate within the groove without interfering with other components. When the treatment head 200 is located within the groove, it can partially cover the groove. The floor assembly 2 is mounted on the frame assembly 1 and located on both sides of the treatment head 200, and together with the treatment head 200, covers the groove on the frame assembly 1 to prevent personnel from falling into the groove.

[0059] Reference Figure 1 and Figure 2 The frame component 1 includes a main body segment 11 and an extension segment 12. The main body segment 11 is provided with a moving groove 111 for the treatment head 200 to move. The moving groove 111 can accommodate the treatment head 200, allowing the treatment head 200 to rotate on the main body segment 11. The extension path of the main body segment 11 can be adapted to part of the rotation path of the treatment head 200, and the extension path of the main body segment 11 is an open path, so that the main body segment 11 can form an opening 113, forming an open structure with two free ends. The extension path of the main body segment 11 is approximately arc-shaped, and the extension path of the moving groove 111 is the same as the extension path of the main body segment 11. The main body segment 11 can be approximately C-shaped.

[0060] Reference Figure 2In some specific embodiments, the main body segment 11 may include an arc-shaped portion 114, a straight portion 115 located above the arc-shaped portion 114, and a connecting portion 116 connecting the arc-shaped portion 114 and the straight portion 115. The extension path of the arc-shaped portion 114 is arc-shaped, the extension path of the straight portion 115 is an inclined straight line, and the extension path of the connecting portion 116 is arc-shaped. The connecting portion 116 is used to form a smooth transition between the arc-shaped portion 114 and the straight portion 115. The radius of the arc-shaped portion 114 of the main body segment 11 can be adapted to the rotation radius of the treatment head 200 so that the treatment head 200 can move within the arc-shaped portion 114. The end of the straight portion 115 away from the arc-shaped portion 114 forms an upper free end, and the end of the arc-shaped portion 114 away from the straight portion 115 in the main body segment 11 forms a lower free end. The upper free end and the lower free end are respectively connected to an extension segment 12.

[0061] Two extension sections 12 are provided, each corresponding to one of the two free ends of the main body section 11, so that each free end of the main body section 11 is connected to one extension section 12. Each extension section 12 is provided with an extension groove 121 communicating with the moving groove 111, and the extension grooves 121 of the two extension sections 12 are located at both ends of the moving groove 111. The extension grooves 121 of the extension section 12 can be used to accommodate part of the floor assembly 2. When the treatment head 200 moves, the floor assembly 2 needs to move with the treatment head 200 to block the moving groove 111 in real time to prevent people from falling. When the floor assembly 2 moves, the floor assembly 2 will extend out of the moving groove 111, and the length of the part of the floor assembly 2 extending out of the moving groove 111 will change. The extension grooves 121 of the extension section 12 can be used to accommodate the part of the floor assembly 2 that exceeds the moving groove 111, and a moving space 1211 is reserved in the extension groove 121. When the treatment head 100 is located in the middle of the main body section 11, only a portion of the space within each extension slot 121 is covered by the floor assembly 2, while the remaining space remains empty. This empty space can serve as a movement space 1211. When the treatment head 100 moves, the floor assembly 2 moves along with it, and the length of the floor assembly 2 within the extension slot 121 changes. When the length of the floor assembly 2 within the extension slot 121 increases, the movement space 1211 can absorb the increased length of the floor assembly 2, ensuring that the movement of the floor assembly 2 is not restricted by insufficient space. The extension length of the extension slot 121 is greater than or equal to the maximum length that the floor assembly 2 can extend beyond the end of the corresponding movement slot 111, ensuring that the portion of the floor assembly 2 extending beyond the movement slot 111 is located within the extension section 12 and is contained within the extension slot 121.

[0062] Reference Figure 9In some specific embodiments, the two extension segments 12 can be a first extension segment 122 and a second extension segment 123. The first extension segment 122 can be connected to the upper free end of the main body segment 11, and the second extension segment 123 can be connected to the lower free end of the main body segment 11. The first extension segment 122 is provided with a first extension groove 1221, and the extension length of the first extension groove 1221 is greater than or equal to the maximum length of the floor assembly 2 extending beyond the upper free end of the main body segment 11. The second extension segment 123 is provided with a second extension groove 1231, and the extension length of the second extension groove 1231 is greater than or equal to the maximum length of the floor assembly 2 extending beyond the lower free end of the main body segment 11. Specifically, when the treatment head 200 moves towards the upper free end of the main body segment 11 to its maximum stroke, the length of the floor assembly 2 extending beyond the upper free end of the main body segment 11 is at its maximum length; when the treatment head 200 moves towards the lower free end of the main body segment 11 to its maximum stroke, the length of the floor assembly 2 extending beyond the lower free end of the main body segment 11 is at its maximum length.

[0063] The first extension segment 122 extends from the upper free end of the main body segment 11 toward the opening 113 away from the main body segment 11. Specifically, the first extension segment 122 may include an inclined segment 1222 and a first horizontal segment 1223. One end of the inclined segment 1222 is connected to the upper free end of the main body segment 11, that is, connected to the straight portion 115 in the main body segment 11, and the other end of the inclined segment 1222 is connected to the first horizontal segment 1223, and the height of the inclined segment 1222 gradually increases in the direction away from the main body segment 11. The first horizontal segment 1223 extends horizontally, and the height of the first horizontal segment 1223 is higher than the upper free end of the main body segment 11. The first horizontal segment 1223 may be higher than or equal to the highest point of the main body segment 11. The first horizontal segment 1223 may be installed on the ceiling wall of the treatment room, embedded in the ceiling wall of the treatment room, or concealed by the ceiling wall of the treatment room. To facilitate a smooth transition between the inclined segment 122 and the first horizontal segment 1223, a first arc-shaped transition portion 1224 may be provided between the inclined segment 122 and the first horizontal segment 1223. The inclined segment 122 is connected to the first horizontal segment 1223 through the first arc-shaped transition portion 1224, so that the overall outline of the first extension segment 122 is relatively smooth and there are no sharp turning points.

[0064] The second extension segment 123 extends from the lower free end of the main body segment 11 toward the opening 113 away from the main body segment 11. Specifically, the second extension segment 123 may include a second horizontal segment 1233, a vertical segment 1232, and a third horizontal segment 1234. The second horizontal segment 1233 extends horizontally from the lower free end of the main body segment 11. The vertical segment 1232 extends downward from the end of the second horizontal segment 1233 away from the main body segment 11. The third horizontal segment 1234 extends horizontally from the end of the vertical segment 1232 away from the main body segment 11. The second horizontal segment 1233 and the third horizontal segment 1234 are located on the same side of the vertical segment 1232 to optimize the arrangement of the second extension segment 123 and prevent interference between the second extension segment 123 and other parts. The extension direction of the second horizontal segment 1233 may be opposite to the extension direction of the first horizontal segment 1223. The second horizontal segment 1233 of the second extension segment 123 can be pre-embedded in the bottom wall of the treatment chamber, and the second horizontal segment 1233 is exposed in the treatment chamber. The second horizontal segment 1233 is connected to the main body segment 11 by fasteners such as bolts, so that the treatment head 200 can move on the main body segment 11 and the second horizontal segment 1233. The vertical segment 1232 of the second extension segment 123 can extend through the bottom wall of the treatment chamber, and the third horizontal segment 1234 of the second extension segment 123 is located below the bottom wall of the treatment chamber.

[0065] The system includes a smooth transition between the second horizontal segment 1233 and the vertical segment 1232, with a second arc-shaped transition section 1238 between them. The second horizontal segment 1233 is connected to the vertical segment 1232 via the second arc-shaped transition section 1238. A smooth transition between the vertical segment 1232 and the third horizontal segment 1234 is also included, with a transition segment 1237 between them. The middle portion of the transition segment 1237 can be an inclined straight line segment structure, and both ends of the transition segment 1237 are arc-shaped contour structures tangent to its straight line segment structure. The arc-shaped structure at one end of the transition segment 1237 connects smoothly to the vertical segment 1232, creating a seamless transition at the junction of the vertical segment 1232 and the transition segment 1237. The arc-shaped structure at the other end of the transition segment 1237 connects smoothly to the third horizontal segment 1234, creating a seamless transition at the junction of the third horizontal segment 1234 and the transition segment 1237. The design of the transition segment 1237 ensures that the overall outline of the vertical segment 1232, the transition segment 1237, and the third horizontal segment 1234 is relatively smooth and avoids sharp inflection points.

[0066] The existing rotating floor 100 has an extended profile that forms a closed path, creating a ring-shaped closed structure. This allows the treatment head 200 to rotate 360°, and the floor assembly 2 of the rotating floor 100 can rotate synchronously with the treatment head 200 along the ring-shaped profile. During treatment with this ring-shaped closed rotating floor 100, the patient needs to be placed inside. The space enclosed by the ring-shaped rotating floor 100 is relatively small. In this confined space, some patients, especially those with claustrophobia, are prone to anxiety. When patients are anxious, their willingness to cooperate is lower, which can affect the treatment process and its effectiveness.

[0067] In this application, the main body segment 11 is provided with an opening 113. The first extension segment 122 and the second extension segment 123 extend in directions away from the opening 113 of the main body segment 11, so that the opening 113 of the main body segment 11 is not obstructed by the first extension segment 122 and the second extension segment 123. The floor assembly 2 is installed on the frame assembly 1, so the outline of the floor assembly 2 is adapted to the outline of the frame assembly 1. In use, the floor assembly 2 forms an open structure with the opening 113, which communicates with the space of the treatment room. Therefore, when the patient moves into the floor assembly 2, the space inside the floor assembly 2 communicates with the rest of the treatment room and forms an open space. When the patient is placed in the rotating floor 100 of this application, the patient is located in the open space, which can effectively alleviate the patient's tension and thus ensure the treatment process and treatment effect. Meanwhile, by setting the main body section 11 to have an opening 113, the space occupied by the rotating floor 100 in the treatment room can be reduced, ensuring the aesthetics and simplicity of the treatment room; medical equipment such as the treatment bed can be moved from the opening 113 into the main body section 11, which facilitates treatment operations.

[0068] In some specific embodiments, the floor assembly 2 can be connected to and driven by the treatment head 200, meaning that the movement of the treatment head 200 will cause the floor assembly 2 to move synchronously. The floor assembly 2 can be moved solely by the driving force of the treatment head 200, eliminating the need for an additional drive mechanism. This effectively simplifies the structure of the rotating floor 100 and reduces its manufacturing cost. It also eliminates the need to reserve installation space for an additional drive mechanism in the treatment room, expanding the usable area of ​​the treatment room and ensuring its aesthetic appeal and simplicity, aligning with the trend towards further integration and miniaturization. The floor assembly 2 can be a single-layer structure.

[0069] When the floor assembly 2 moves with the treatment head 200, the floor assembly 2 will be positioned close to or adjacent to the treatment head 200. The moving groove 111 of the main body section 11 and the second horizontal section 1233 of the second extension section 123 are exposed in the treatment chamber. The extension groove 121 on the moving groove 111 and the second horizontal section 1233 partially forms a clearance space to avoid the treatment head 200. This clearance space is used for the movement of the treatment head 200, and a portion of the clearance space is occupied by the treatment head 200, while the remaining portion of the clearance space is covered by the floor assembly 2. The extension length of the floor assembly 2 is greater than the extension length of the clearance space. The combination formed by the floor assembly 2 and the treatment head 200 maintains complete coverage of the clearance space during movement, ensuring that the clearance space is always covered during the movement of the treatment head 200. This effectively prevents personnel from falling into the clearance space and also prevents external parts from falling into the treatment chamber through the clearance space and causing injury to personnel or equipment.

[0070] When the treatment head 200 moves, the floor assembly 2 needs to move synchronously with it to ensure that it always stays close to or adjacent to the treatment head 200. This prevents a large gap from forming between the floor assembly 2 and the treatment head 200, which would leave a gap that cannot be covered or occupied, potentially leading to a risk of people falling through the gap. In this application, using the treatment head 200 to drive the floor assembly 2 allows for synchronous movement of the treatment head 200 and the floor assembly 2. The floor assembly 2 blocks the clearance space of the frame assembly 1 in real time as the treatment head 200 moves. The method of the treatment head 200 driving the floor assembly 2 also prevents interference between the treatment head 200 and the floor assembly 2 or gaps between the floor assembly 2 and the treatment head 200 caused by the asynchronous driving of additional driving structures. This would expose the moving groove 111, thus preventing additional driving structures from increasing the risk of falls.

[0071] Reference Figure 5 and Figure 7 In some specific embodiments, the floor assembly 2 may include a first portion 23 and a second portion 24, which are spaced apart and the gap between the first portion 23 and the second portion 24 is used to install the treatment head 200, such that the first portion 23 and the second portion 24 are located on opposite sides of the treatment head 200. One end of the first portion 23 is located within the main body segment 11 and is used to connect with the treatment head 200, while the other end of the first portion 23 can extend into a corresponding extension segment 12. One end of the second portion 24 is located within the main body segment 11 and is used to connect with the treatment head 200, while the other end of the second portion 24 can extend into a corresponding extension segment 12.

[0072] Specifically, the first part 23 can be connected to one end of the treatment head 200 adjacent to the first extension section 122, and the first part 23 can extend from the moving groove 111 of the main body section 11 into the first extension groove 1221 of the first extension section 122; the second part 24 can be connected to one end of the treatment head 200 adjacent to the second extension section 123, and the second part 24 can extend from the moving groove 111 of the main body section 11 into the second extension groove 1231 of the second extension section 123. When the treatment head 200 moves, the first part 23 and the second part 24 connected to the treatment head 200 will move synchronously with the treatment head 200, and the portion of the first part 23 that extends beyond the moving groove 111 is received within the first extension section 122, and the portion of the second part 24 that extends beyond the moving groove 111 is received within the second extension section 123.

[0073] Reference Figure 5 and Figure 6 In some specific embodiments, the first part 23 of the floor assembly 2 is fixedly connected to a first connector 231, and the end of the treatment head 200 for connecting to the first part 23 is provided with a second connector 232, which is fixedly connected to the treatment head 200. The first connector 231 and the second connector 232 are connected so that the first part 23 of the floor assembly 2 is indirectly connected to the treatment head 200 and can be driven by the treatment head 200.

[0074] When the treatment head 200 drives the first part 23 of the floor assembly 2 to move, the different structure of the treatment head 200 and the floor assembly 2 causes a difference in the movement path of the treatment head 200 when rotating compared to the movement path of the first part 23 of the floor assembly 2. When the first connector 231 and the second connector 232 are fixed together, the difference in the movement paths of the treatment head 200 and the floor assembly 2 will affect the driving force of the treatment head 200 on the floor assembly 2, and in severe cases, may cause damage to the rotating floor 100. To compensate for the difference in the movement paths between the treatment head 200 and the first part 23 of the floor assembly 2, the first connector 231 and the second connector 232 are movably connected. When the treatment head 200 drives the first part 23 of the floor assembly 2 to move, the first connector 231 can move relative to the second connector 232 to compensate for the difference in the movement paths of the treatment head 200 and the first part 23 of the floor assembly 2. Furthermore, by making the first connector 231 and the second connector 232 movable relative to each other, the treatment head 200 can be flexibly connected to the first part 23, thereby absorbing the vibration generated between the treatment head 200 and the first part 23.

[0075] Preferably, the first connector 231 and the second connector 232 can produce a circular arc-shaped relative movement. When the relative movement strokes of the first connector 231 and the second connector 232 are the same, compared to setting the first connector 231 and the second connector 232 to produce a circular arc-shaped relative movement, it facilitates the miniaturization of the first connector 231 and the second connector 232, reduces the weight and structural stress of the first connector 231 and the second connector 232, and can effectively reduce costs. At the same time, it can also improve the safety factor of the overall structure formed by the first connector 231 and the second connector 232.

[0076] When the treatment head 200 moves upward, the first connector 231 moves inward relative to the second connector 232; when the treatment head 200 moves downward, the first connector 231 moves outward relative to the second connector 232. Specifically, the inward side is the side of the rotating floor facing the treatment bed, and the outward side is the side of the rotating floor away from the treatment bed.

[0077] In some specific embodiments, one of the first connector 231 and the second connector 232 is provided with a second rolling element 2311, and the other is provided with a second rolling groove 2321 that cooperates with the second rolling element 2311. The second rolling groove 2321 is an arc-shaped groove and is used to receive the second rolling element 2311 so that the second rolling element 2311 can move within the second rolling groove 2321. Therefore, the first part 23 connected to the first connector 231 can move relative to the treatment head 200 connected to the second connector 232.

[0078] In this embodiment, a second rolling element 2311 may be provided on the first connecting member 231, and a second rolling groove 2321 may be provided on the second connecting member 232. The first connecting member 231 may have multiple second rolling elements 2311, located on opposite sides of the first connecting member 231. For example, two second rolling elements 2311 may be provided on each opposite side of the first connecting member 231. The second connecting member 232 may have two second rolling grooves 2321, located on opposite sides of the first connecting member 231, with each groove 2321 accommodating a second rolling element 2311 located on the same side. A shaft may be fixedly provided on the first connecting member 231, and the second rolling elements 2311 may be mounted on the shaft of the first connecting member 231 and rotatable relative to the shaft. Furthermore, the width of the second rolling groove 2321 can be the same as or slightly larger than the outer diameter of the second rolling element 2311. When the second rolling element 2311 moves within the second rolling groove 2321, it can rotate, thereby making the movement of the second rolling element 2311 smoother and more stable. Specifically, the second rolling element 2311 can be a bearing.

[0079] In some specific embodiments, assuming that the arc-shaped portion 114, the connecting portion 116, the first arc-shaped transition portion 1224, and the second rolling groove 2321 of the second connector 232 are directly connected, the curvature center of the arc-shaped portion 114 is O1, the curvature center of the connecting portion 116 is O2, the curvature center of the first arc-shaped transition portion 1224 is O3, and the curvature center of the arc-shaped moving path of the first connector 231 (i.e., the extension path of the second rolling groove 2321 of the second connector 232) is O4. To ensure that the movement of the treatment head 200 with the floor assembly 2 and the movement of the first connector 231 and the second connector 232 do not interfere with each other, the curvature centers O1, O2, O3, and O4 need to be collinear.

[0080] When arranging the rotating floor, the arc-shaped portion 114, the connecting portion 116, and the first arc-shaped transition portion 1224 can be predetermined to correspond to the isocenter point of the treatment room and avoid other parts of the proton therapy system. In order to ensure that the curvature center O4 corresponding to the arc-shaped movement path of the first connector 231 can be collinear with O1, O2, and O3 and that the movement of the treatment head 200 and the floor assembly 2, as well as the movement of the first connector 231 and the second connector 232, will not interfere with each other, R1:R2:R3:R4 is (8.9~9.1):(0.95~1.05):(0.45~0.55):(4.8~5.0). Preferably, R1:R2:R3:R4 is 9.03:1:0.5:4.92. The radius of the arc-shaped portion 114 is R1, the radius of the connecting portion 116 is R2, the radius of the first arc-shaped transition portion 1224 is R3, and the radius of the arc-shaped movement path of the first connector 231 is R4. After the curvature center and half-hole of the arc-shaped portion 114, the connecting portion 116, and the first arc-shaped transition portion 1224 are determined, simulation is performed using CAD (Computer Aided Design) software. It is found that when the radius R4 of the arc-shaped movement path of the first connector 231 satisfies the above ratio relationship, the movement of the treatment head 200 and the floor assembly 2, as well as the movement of the first connector 231 and the second connector 232, will not interfere with each other.

[0081] Reference Figure 7 and Figure 8 In some specific embodiments, the second part 24 of the floor assembly 2 is fixedly connected to a third connector 241, and the end of the treatment head 200 for connecting to the second part 24 is provided with a fourth connector 242, which is fixedly connected to the treatment head 200. The third connector 241 and the fourth connector 242 are connected so that the second part 24 of the floor assembly 2 is indirectly connected to the treatment head 200 and can be driven by the treatment head 200.

[0082] When the treatment head 200 drives the second part 24 of the floor assembly 2 to move, the different structure of the treatment head 200 and the floor assembly 2 causes a difference in the movement path of the treatment head 200 during rotation compared to the movement path of the second part 24 of the floor assembly 2. When the third connector 241 and the fourth connector 242 are fixed together, the difference in movement paths between the treatment head 200 and the floor assembly 2 will affect the driving force of the treatment head 200 on the floor assembly 2, and in severe cases, may cause damage to the rotating floor 100. To compensate for the difference in movement paths between the treatment head 200 and the second part 24 of the floor assembly 2, the third connector 241 and the fourth connector 242 are movably connected. When the treatment head 200 drives the second part 24 of the floor assembly 2 to move, the third connector 241 can move relative to the fourth connector 242 to compensate for the difference in movement paths between the treatment head 200 and the second part 24 of the floor assembly 2.

[0083] Preferably, the third connector 241 and the fourth connector 242 can produce a circular arc-shaped relative movement. When the relative movement strokes of the third connector 241 and the fourth connector 242 are the same, compared to setting the relative movement of the third connector 241 and the fourth connector 242 to a linear relative movement, setting the relative movement of the third connector 241 and the fourth connector 242 to produce a circular arc facilitates the miniaturization of the third connector 241 and the fourth connector 242, reduces the weight and structural stress of the third connector 241 and the fourth connector 242, and can effectively reduce costs. At the same time, it can also improve the safety factor of the overall structure formed by the third connector 241 and the fourth connector 242.

[0084] When the treatment head 200 moves upward, the third connector 241 moves inward relative to the fourth connector 242; when the treatment head 200 moves downward, the third connector 241 moves outward relative to the fourth connector 242. Specifically, the inward side is the side of the rotating floor facing the treatment bed, and the outward side is the side of the rotating floor away from the treatment bed.

[0085] In some specific embodiments, one of the third connector 241 and the fourth connector 242 is provided with a second rolling element 2311, and the other is provided with a second rolling groove 2321 that cooperates with the second rolling element 2311. The second rolling groove 2321 is an arc-shaped groove and is used to receive the second rolling element 2311 so that the second rolling element 2311 can move within the second rolling groove 2321, thereby allowing the second part 24 connected to the third connector 241 to move relative to the treatment head 200 connected to the fourth connector 242.

[0086] In this embodiment, the third connecting member 241 may have a second rolling element 2311, and the fourth connecting member 242 may have a second rolling groove 2321. The third connecting member 241 may have multiple second rolling elements 2311, positioned on opposite sides of the third connecting member 241; for example, two second rolling elements 2311 may be positioned on each opposite side of the third connecting member 241. The fourth connecting member 242 may have two second rolling grooves 2321, located on opposite sides of the third connecting member 241, with each groove 2321 accommodating a second rolling element 2311 located on the same side. A shaft may be fixedly mounted on the third connecting member 241, and the second rolling elements 2311 are mounted on the shaft and can rotate relative to it. Furthermore, the width of the second rolling groove 2321 on the third connecting member 241 can be the same as or slightly larger than the outer diameter of the second rolling member 2311 on the fourth connecting member 242. When the second rolling member 2311 moves within the second rolling groove 2321, it can rotate, making its movement smoother and more stable. Specifically, the second rolling member 2311 can be a bearing.

[0087] In some specific embodiments, assuming that the arcuate portion 114 of the main body segment 11, the second rolling groove 2321 of the fourth connector 242, and the second arcuate transition portion 1238 are directly connected, the curvature center of the arcuate portion 114 is O1, the curvature center of the arcuate movement path of the third connector 241 (i.e., the extension path of the second rolling groove 2321 of the fourth connector 242) is O5, and the curvature center of the second arcuate transition portion 1238 is O6. To ensure that the movement of the treatment head 200 with the floor assembly 2, and the movement of the third connector 241 and the fourth connector 242, do not interfere with each other, the curvature centers O1, O5, and O6 need to be collinear.

[0088] When arranging the rotating floor, the arc-shaped portion 114 and the second arc-shaped transition portion 1238 can be predetermined to correspond to the isocenter point of the treatment room and avoid other parts of the proton therapy system. To ensure that the curvature center O5 corresponding to the arc-shaped movement path of the third connector 241 is collinear with O1 and O6, and that the movement of the treatment head 200 and the floor assembly 2, as well as the movement of the third connector 241 and the fourth connector 242, does not interfere with each other, R1:R5:R6 is (16-20):(60-70):(13-17), preferably R1:R5:R6 is 18:65:15. The radius of the arc-shaped movement path of the third connector 241 is R5; the radius of the second arc-shaped transition portion 1238 is R6. Once the curvature center and half-hole of the arc-shaped portion 114 and the second arc-shaped transition portion 1238 are determined, simulation is performed using CAD software. It is found that when the radius R5 of the arc-shaped movement path of the third connector 241 satisfies the above ratio relationship, the movement of the treatment head 200 and the floor assembly 2, as well as the movement of the third connector 241 and the fourth connector 242, will not interfere with each other.

[0089] Furthermore, to make the movement of the treatment head 200 and the second part 24 smoother, R1:R5:R6:R7:R8 is (16-20):(60-70):(13-17):(11-14):(16-20), preferably, R1:R5:R6:R7:R8 is 18:65:15:13:18. The portion connecting the transition section 1237 and the vertical section 1232 has an arc-shaped profile with a radius of R7, and the portion connecting the transition section 1237 and the third horizontal section 1234 has an arc-shaped profile with a radius of R8. The structure and position of the transition section 1237 are predetermined so that the isocenter point of the rotating floor treatment chamber corresponds to and avoids other parts of the proton therapy system.

[0090] In order to reduce the noise generated when the second rolling element 2311 rolls in the second rolling groove 2321, the outer periphery of the second rolling element 2311 may be wrapped with a flexible material such as polyurethane.

[0091] In this application, the treatment head 200 is connected to the first part 23 of the floor assembly 2 via a first connecting structure formed by the first connector 231 and the second connector 232, and the treatment head 200 is connected to the second part 24 of the floor assembly 2 via a second connecting structure formed by the third connector 241 and the fourth connector 242. The first and second connecting structures respectively achieve the movable cooperation between the corresponding parts of the treatment head 200 and the floor assembly 2 through the cooperation of rolling elements and arc-shaped rolling grooves. The first and second connecting structures have simple structures, which facilitates the connection operation between the treatment head 200 and the floor assembly 2. Furthermore, by employing a structure in which the second rolling element 2311 is installed on the first connecting element 231 and the third connecting element 241, and the second rolling element 2311 cooperates with the corresponding second rolling groove 2321, when the movement between the treatment head 200 and the floor assembly 2 becomes stuck due to component aging, external contamination, or other reasons after the equipment has been in operation for a period of time, only the second rolling element 2311 needs to be replaced or the second rolling groove 2321 needs to be cleaned. There is no need to replace the first or second connecting structure as a whole, which simplifies the maintenance operation of the first and second connecting structures and can reduce maintenance costs.

[0092] When the first connector 231 and the second connector 232 are coupled with a rolling element and a rolling groove, and the third connector 241 and the fourth connector 242 are coupled with a rolling element and a rolling groove, if the driving force of the first part 23 and the second part 24 of the treatment head 200 driving the floor assembly 2 is large, it will have a large force between the rolling element and the rolling groove, affecting the service life of the rolling element and the operation of the rolling groove.

[0093] Reference Figure 12To reduce the driving resistance when the treatment head 200 drives the first part 23 and the second part 24 of the floor assembly 2, the first part 23 and the second part 24 of the floor assembly 2 are respectively lightweighted. Specifically, the first part 23 and the second part 24 of the floor assembly 2 are formed by connecting multiple floor sections 21. Each floor section 21 can be lightweighted to reduce the weight of the first part 23 and the second part 24 of the floor assembly 2, thereby reducing the driving resistance of the treatment head 200 driving the first part 23 and the second part 24 of the floor assembly 2. The floor section 21 includes a first surface 213 facing the treatment area and a second surface 214 facing away from the treatment area. At least one hollow portion 215 can be provided on the second surface 214 to achieve the lightweighting of the floor section 21. There can be multiple hollow portions 215 provided on the second surface 214, and the multiple hollow portions 215 are arranged sequentially at intervals along the width direction of the frame assembly 1. In addition, hollow portions 215 can also be provided on two sides of the floor section 21 along opposite sides of the frame assembly 1 to further reduce the weight of the floor section 21. The first surface 213 of the floor 21 can be a complete surface without any perforations. When installing or adjusting equipment such as a proton accelerator connected to the treatment head 200, maintenance wrenches or missing bolts may fall onto the floor assembly 2. The proton accelerator is located on the side of the floor assembly 2 away from the treatment area. The maintenance wrench or missing bolt will be blocked by the complete, non-perforated first surface 213 of the floor 21, thus preventing the wrench or bolt from falling into the treatment space and causing damage to personnel or equipment in the treatment space.

[0094] Reference Figure 10 In some specific embodiments, the second extension 123 of the rotating floor contacts but is not fixed to the ground, specifically the floor of the lower level of the treatment room. Specifically, the third horizontal section 1234 of the second extension 123 is located on the ground, and a connecting piece 1235 is connected to the third horizontal section. A foot support 1236 is provided on the connecting piece 1235. The foot support 1236 is used to abut against the ground to apply support force to the third horizontal section 1234 through the connecting piece 1235. The connecting piece 1235 may have a certain degree of elasticity; for example, the connecting piece 1235 may be a thin, elastic metal sheet structure. Furthermore, the portion of the foot support 1236 that contacts the ground may be provided with a flexible buffer section, which may be made of a flexible material such as rubber.

[0095] Multiple foot supports 1236 and connecting pieces 1235 can be provided respectively. Some of the connecting pieces 1235 are connected to the third horizontal section 1234, and some of the connecting pieces 1235 are connected to the transition section 1237. Each connecting piece 1235 is connected to one or more foot supports 1236.

[0096] When the floor assembly 2 of the treatment head 200 moves, the rotating floor 100 vibrates. At the foot support 1236, the foot support 1236 absorbs the vibration of the frame assembly 1 through the cushioning of the flexible buffer, thereby reducing the vibration level of the rotating floor 100. Furthermore, the connecting piece 1235 elastically wobbles due to the vibration of the frame assembly 1, and absorbs the vibration of the frame assembly 1 through its own elastic deformation, thereby reducing the vibration level of the rotating floor 100. Through the cushioning effect of the connecting piece 1235 and the foot support 1236, the vibration level of the rotating floor 100 is significantly reduced, and the noise generated during the movement of the rotating floor 100 is also reduced. (Refer to...) Figure 11 In some specific embodiments, adjacent floorboards 21 in the first part 23 and the second part 24 of the floor assembly 2 can be connected by rubber members 22. Multiple floorboards 21 in the first part 23 and the second part 24 are connected by rubber members 22 to form a chain structure. Specifically, connecting grooves 211 can be provided at opposite ends of the floorboards 21 along the extension direction of the frame assembly 1. A portion of the rubber member 22 is embedded in the connecting groove 211 of one floorboard 21, and another portion of the rubber member 22 is embedded in the connecting groove 211 of another floorboard 21 adjacent to that floorboard 21, so that adjacent floorboards 21 are connected by the rubber member 22. When installing the rubber member 22, the rubber member 22 can be inserted into the connecting groove 211 from one side, and the installation direction of the rubber member 22 is perpendicular to the moving direction of the floorboard 21. The floorboard 21 can be provided with a limiting feature for the rubber member 22 along its moving direction, for example, the wall forming the connecting groove 211 abuts against the opposite ends of the rubber member 22 along the moving direction of the floorboard 21 to limit the rubber member 22. By using rubber components 22 to connect adjacent floorboards 21, the good flexibility of rubber can effectively reduce the noise generated between adjacent floorboards 21 when the floor assembly 2 moves.

[0097] To prevent the rubber component 22 from shifting when the floor assembly 2 moves, the floor 21 can also be provided with an anti-shifting buckle 216, one end of which is located in the connecting groove 211. When the rubber component 22 is connected to the floor 21, the opposite ends of the rubber component 22 are respectively located in the corresponding connecting grooves 211 of the adjacent floor 21. At this time, the opposite ends of the rubber component 22 are pressed and abutted by the anti-shifting buckle 216 in the corresponding connecting groove 211 to fix the rubber component 22, thereby preventing the rubber component 22 from shifting when the floor assembly 2 moves.

[0098] Reference Figure 3 and Figure 4In some specific embodiments, the side of the floor 21 may be provided with a first rolling element 212, and the frame assembly 1 is provided with a first rolling groove 112 that cooperates with the first rolling element 212. The groove width of the first rolling groove 112 may be adapted to the outer diameter of the first rolling element 212, for example, the groove width of the first rolling groove 112 may be the same as or slightly larger than the outer diameter of the first rolling element 212. A portion of the first rolling groove 112 is located in the first extension section 122, a portion is located in the main body section 11, and a portion is located in the second extension section 123, so that the first rolling element 212 can slide on the first extension section 122, the second extension section 123, and the main body section 11. The two sides of the floor 21 may each be provided with a first rolling element 212, and the two sides of the frame assembly 1 are also provided with first rolling grooves 112. The first rolling elements 212 and the first rolling grooves 112 located on the same side cooperate to allow the floor 21 to move on the frame assembly 1. The sides of the floor 21 and the frame assembly 1 are specifically the two sides of the floor 21 and the frame assembly 1 along the width direction of the frame assembly 1.

[0099] A shaft may be provided on the side of the floor 21, and a first rolling element 212 is mounted on the shaft on the side of the floor 21 and rotates around the shaft. The first rolling element 212 may specifically be a bearing. In order to reduce the noise generated when the first rolling element 212 rolls in the first rolling groove 112, the first rolling element 212 may be covered with a flexible material such as polyurethane.

[0100] In the rotating floor 100, the frame assembly 1, the first connector 231, the second connector 232, the third connector 241, the fourth connector 242, and the floor 21 can all be made of 6061-T6 material. 6061-T6 material is basically unaffected by magnetic fields, reducing the degree of aging caused by radiation.

[0101] The present invention also provides a proton therapy system, including a treatment head 200, a proton accelerator, and the aforementioned rotating floor 100.

[0102] A proton accelerator is connected to the treatment head 200 and is used to accelerate protons to generate a high-energy proton beam. This beam can be delivered to the treatment head 200 and emitted through the treatment head 200 to irradiate the lesion site on the patient. The proton accelerator and the treatment head 200 can be located on opposite sides of the rotating floor 100, with the treatment head 200 located within the treatment space of the treatment room, while the proton accelerator is shielded by the rotating floor 100 and the walls of the treatment room.

[0103] In the rotating floor 100, the main body segment 11 of the rotating floor 100 is exposed to the treatment chamber, while the extension segment 12 of the rotating floor 100 is covered by the walls of the treatment chamber. Specifically, the first extension segment 122 is covered by the top wall of the treatment chamber, and the second extension segment 123 is covered by the bottom wall of the treatment chamber. The treatment head 200 rotates on the main body segment 11 exposed to the treatment chamber, and the rotation angle of the treatment head 200 can be -5° to 185°.

[0104] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the invention without departing from the principles and spirit of the invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A rotating floor, characterized in that, The system includes a frame assembly (1) and a floor assembly (2) disposed on the frame assembly (1); the frame assembly (1) includes a main body segment (11), the main body segment (11) is provided with a moving groove (111) for avoiding the treatment head (200), the extension profile of the main body segment (11) is a non-closed path and forms an opening (113); the upper free end of the main body segment (11) is connected to a first extension segment (122), the lower free end of the main body segment (11) is connected to a second extension segment (123), the extension segment (12) extends to the wall embedded in the treatment chamber, and the part of the extension segment (12) that does not cooperate with the treatment head (200) is shielded by the treatment chamber, and the extension segment (12) is provided with an extension groove (121) communicating with the moving groove (111). The frame assembly (1) is provided with a floor assembly (2), which is used to connect to and be driven by the treatment head (200). The extension length of the floor assembly (2) is greater than the extension length of the moving groove (111). The combination formed by the floor assembly (2) and the treatment head (200) maintains complete coverage of the portion of the moving groove (111) and the extension groove (121) exposed in the treatment chamber during movement. The portion of the floor assembly (2) extending beyond the moving slot (111) is housed within the extension slot (121). The extension slots (121) of the two extension segments (12) are respectively reserved with moving spaces (1211). The floor assembly (2) is driven by the treatment head (200) to move into or out of the moving spaces (1211). The floor assembly (2) includes a first part (23) and a second part (24), which are separated and form a space for accommodating a treatment head (200); One end of the first part (23) is located within the main body segment (11) and is used to connect with the treatment head (200), and the other end of the first part (23) extends into the first extension segment (122); one end of the second part (24) is located within the main body segment (11) and is used to connect with the treatment head (200), and the other end of the second part (24) extends into the second extension segment (123); the first part (23) and the second part (24) are synchronously driven by the treatment head (200); The first part (23) is fixedly connected to a first connector (231), the first connector (231) is movably connected to a second connector (232), and the first connector (231) can move in an arc relative to the second connector (232). The second connector (232) is used to be fixedly connected to the treatment head (200). One of the first connector (231) and the second connector (232) is provided with a second rolling element (2311), and the other is provided with an arc-shaped second rolling groove (2321) that cooperates with the second rolling element (2311). The first connector (231) and the second connector (232) are movably connected through the cooperation of the second rolling element (2311) and the second rolling groove (2321) so that the first part (23) can move relative to the treatment head (200). The second part (24) is fixedly connected to a third connector (241), the third connector (241) is movably connected to a fourth connector (242), and the third connector (241) is capable of arc-shaped movement relative to the fourth connector (242). The fourth connector (242) is used to be fixedly connected to the treatment head (200). One of the third connector (241) and the fourth connector (242) is provided with a second rolling element (2311), and the other is provided with an arc-shaped second rolling groove (2321) that cooperates with the second rolling element (2311). The third connector (241) and the fourth connector (242) are movably connected through the cooperation of the second rolling element (2311) and the second rolling groove (2321) so that the second part (24) can move relative to the treatment head (200).

2. The rotating floor according to claim 1, characterized in that, The extension length of the extension groove (121) is greater than or equal to the maximum length that the floor assembly (2) can extend beyond the end of the corresponding moving groove (111).

3. The rotating floor according to claim 1, characterized in that, The first extension segment (122) includes an inclined segment (1222) that rises obliquely from the main body segment (11) and a first horizontal segment (1223) that extends horizontally from the inclined segment (1222); the second extension segment (123) includes a second horizontal segment (1233) that connects to the main body segment (11) and extends horizontally, a vertical segment (1232) that extends vertically, and a third horizontal segment (1234) that connects to the vertical segment (1232) and extends horizontally; the second horizontal segment (1233) and the third horizontal segment (1234) are located on the same side of the vertical segment (1232); The first extension section (122) is covered by the top wall of the treatment room, the second horizontal section (1233) and the main body section (11) are exposed in the treatment room so that the treatment head (200) can move on the main body section (11) and the second horizontal section (1233), and the vertical section (1232) and the third horizontal section (1234) are covered by the bottom wall of the treatment room.

4. The rotating floor according to claim 3, characterized in that, The third horizontal segment (1234) is connected to a connecting piece (1235), and the connecting piece (1235) is provided with a foot support (1236). The foot support (1236) abuts against the ground to support the third horizontal segment (1234). The foot support (1236) is provided with a flexible buffer part in the part that contacts the ground, the flexible buffer part is used to absorb the vibration generated by the frame assembly (1); and / or, the connecting piece (1235) is elastically deformed to absorb the vibration generated by the frame assembly (1).

5. The rotating floor according to claim 1, characterized in that, When the treatment head (200) moves upward, the first connector (231) moves inward relative to the second connector (232), and the third connector (241) moves inward relative to the fourth connector (242); when the treatment head (200) moves downward, the first connector (231) moves outward relative to the second connector (232), and the third connector (241) moves outward relative to the fourth connector (242).

6. The rotating floor according to claim 3, characterized in that, The main body segment (11) includes an arc-shaped portion (114), a straight portion (115), and a connecting portion (116) connecting the arc-shaped portion (114) and the straight portion (115). The radius of the arc-shaped portion (114) is R1, and the radius of the connecting portion (116) is R2. The inclined segment (1222) and the first horizontal segment (1223) are connected by a first arc-shaped transition portion (1224) with a radius of R3. The radius of the arc-shaped movement path of the first connector (231) is R4. Among them, R1:R2:R3:R4 is (8.9~9.1):(0.95~1.05):(0.45~0.55):(4.8~5.0).

7. The rotating floor according to claim 6, characterized in that, The radius of the arc-shaped moving path of the third connector (241) is R5; the second horizontal segment (1233) and the vertical segment (1232) are connected by a second arc-shaped transition section (1238) with a radius of R6; Wherein, R1:R5:R6 is (16~20):(60~70):(13~17).

8. The rotating floor according to claim 7, characterized in that, A transition section (1237) is provided between the vertical segment (1232) and the third horizontal segment (1234). The part of the transition section (1237) connected to the vertical segment (1232) is an arc-shaped profile with a radius of R7, and the part of the transition section (1237) connected to the third horizontal segment (1234) is an arc-shaped profile with a radius of R8. Among them, R1:R5:R6:R7:R8 is (16~20):(60~70):(13~17):(11~14):(16~20).

9. The rotating floor according to claim 1, characterized in that, The second rolling element (2311) is a bearing, and the outer periphery of the second rolling element (2311) is covered with a polyurethane layer.

10. The rotating floor according to claim 1, characterized in that, The floor assembly (2) includes a plurality of floorboards (21) and a rubber component (22) connecting adjacent floorboards (21). The ends of the floorboards (21) are provided with connecting grooves (211). A part of the rubber component (22) is embedded in the connecting groove (211) of one floorboard (21), and another part of the rubber component (22) is embedded in the connecting groove (211) of another floorboard (21). The multiple floorboards (21) are connected by the rubber components (22) to form a chain structure.

11. The rotating floor according to claim 10, characterized in that, The floor (21) is provided with a first rolling element (212) on its side, and the frame assembly (1) is provided with a first rolling groove (112) that cooperates with the first rolling element (212). The floor (21) slides in the first rolling groove (112) through the first rolling element (212) so that the floor assembly (2) moves in the frame assembly (1).

12. The rotating floor according to claim 10, characterized in that, The floor (21) is also provided with an anti-offset buckle (216) extending into the connecting groove (211), the anti-offset buckle (216) pressing against the rubber part (22) located in the connecting groove (211) to fix the rubber part (22).

13. The rotating floor according to claim 10, characterized in that, The floor (21) includes a second side (214) facing away from the treatment area, and at least one perforated portion (215) is provided on the second side (214). And / or, the floor (21) includes a pair of opposing sides along the width direction of the frame assembly (1), each of the pair of sides being provided with a cutout (215).

14. A proton therapy system, characterized in that, include: The rotating floor as described in any one of claims 1 to 13; The treatment head (200) is connected to the rotating floor (100) and is used to drive the rotating floor (100) to rotate; A proton accelerator for accelerating protons to provide a beam to the treatment head (200), the proton accelerator and the treatment head (200) being located on opposite sides of the rotating floor.

15. The proton therapy system according to claim 14, characterized in that, The main body section (11) and the second horizontal section (1233) of the rotating floor are exposed to the treatment room, and the second horizontal section (1233) is pre-embedded in the bottom wall of the treatment room. The second horizontal section (1233) is fixedly connected to the main body section (11) by fasteners. The first extension section (122), the vertical section (1232) and the third horizontal section (1234) of the rotating floor are covered by the wall of the treatment room. The treatment head (200) rotates on the main body segment (11) and the second horizontal segment (1233) and the rotation angle of the treatment head (200) is -5° to 185°.

Images