Radiotherapy device

Abstract

The application discloses a radiotherapy equipment, comprising: a patient fixing device, a scanning device and a positioning device. The scanning device comprises a scanning piece and a support, and the positioning device comprises a first supporting platform, a second supporting platform and a first driving device. The patient fixing device and the scanning device are arranged on the first supporting platform, the first driving device can drive the first supporting platform to move, and the scanning device can move synchronously. The second supporting platform is arranged below the ground of a treatment room, the first driving device can move the upper surface of the first supporting platform to a position close to the ground of the treatment room, and the upper surface of the scanning piece can be moved below the upper surface of the first supporting platform or the upper surface of the scanning piece can be moved to a position flush with the upper surface of the first supporting platform. The radiotherapy equipment not only has a compact structure and occupies a small space, but also can scan patients at different yaw angles, and more accurately positions the diseased part of the patient.

Description

Technical Field

[0001] This invention relates to the field of high-end medical equipment technology, and in particular to a radiotherapy device. Background Technology

[0002] Cancer is a deadly disease facing humanity, posing a significant threat to human life and health. The main treatments for cancer include surgery, radiotherapy, and chemotherapy. Radiotherapy, in particular, uses high-energy radiation emitted by a radiotherapy device to kill tumor cells. Radiotherapy equipment may include a patient fixation device and a positioning device. The patient sits or lies on the positioning device, which positions the patient relative to the fixation device, thereby moving the patient's affected area to the isocenter of the radiotherapy equipment. Before positioning the patient, a scanner is needed to determine the location of the affected area, and the scanner is also needed during radiotherapy.

[0003] In existing technologies, the positioning device and the scanning device are separate components, resulting in a relatively dispersed overall structure of the radiotherapy equipment. This not only increases the overall size of the radiotherapy equipment, occupying treatment room space and easily causing interference with other equipment in the treatment room, but also prevents the scanning device from being positioned together with the patient fixation device, making it impossible to scan the patient in a timely manner. Furthermore, since the scanning angle of the scanning device remains constant, it is impossible to scan patients at different tilt angles, especially for lesions at special angles.

[0004] Therefore, existing radiotherapy equipment needs further improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a compact, integrated radiotherapy device.

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

[0007] A radiotherapy device, comprising:

[0008] A patient fixation device for supporting a patient;

[0009] A scanning device, comprising a scanning element and a support, wherein the scanning element is disposed on the support and is movable in the extending direction of the support, and the scanning element is used to scan a patient;

[0010] A positioning device includes a first support platform, a second support platform, and a first drive device. The first support platform and the second support platform are spaced apart in the vertical direction and are connected by the first drive device. The patient fixation device and the scanning device are both disposed on the first support platform. The first drive device can drive the first support platform to move, and the scanning device can move synchronously.

[0011] The second support platform is used to be installed below the floor of the treatment room. The first driving device can move the upper surface of the first support platform to a position close to the floor of the treatment room. The upper surface of the scanning element can be moved to a position below the upper surface of the first support platform or the upper surface of the scanning element can be moved to a position flush with the upper surface of the first support platform.

[0012] Preferably, the support is a telescopic support, which includes at least two lifting sections, at least one of the lifting sections being able to move up and down along the other lifting section in the telescopic direction of the support.

[0013] Preferably, the top of the bracket can retract to below the upper surface of the first support platform or the top of the bracket can move to a position flush with the upper surface of the first support platform.

[0014] Preferably, the support includes a first support and a second support arranged opposite to each other, the first support and the second support being connected to opposite sides of the scanning element, respectively.

[0015] Preferably, the first support platform includes a first support portion, a second support portion, and a connecting portion. The first support portion is disposed above the second support portion, and the first support portion and the second support portion are connected by the connecting portion. The second support portion and the connecting portion form an accommodating space. At least a portion of the patient fixation device and at least a portion of the scanning device are disposed in the accommodating space. The scanning element has a through portion extending in the vertical direction so that it can be fitted around the patient. A second through hole is provided in the vertical direction near the middle position of the second support portion and is at least partially aligned with the through portion. A third through hole is provided in the vertical direction near the middle position of the second support platform and is at least partially aligned with the second through hole.

[0016] Preferably, it further includes a rotating platform, wherein the second support platform is disposed on the rotating platform and is capable of rotating around the first rotation axis, and the isocenter point of the radiotherapy device is located on the first rotation axis.

[0017] Preferably, the device further includes a lifting device, the patient fixation device is connected to the lifting device, and the lifting device is used to drive the patient fixation device to move along a first direction, the first direction being parallel to the extension direction of the support.

[0018] Preferably, the patient fixation device includes a support base and a bearing surface, a backrest, an adjustment mechanism, and a limiting part disposed on the support base. The bearing surface is used to support the patient, the limiting part is used to restrict the position of the patient's legs, and the bearing surface and the backrest are connected through the adjustment mechanism.

[0019] The lifting device includes a first bearing part and a second bearing part. The support base is disposed on the first bearing part. A slider is disposed on the first bearing part. A guide rail extending along a first direction is disposed on the second bearing part. The first bearing part and the second bearing part are slidably connected through the slider and the guide rail. The first bearing part can drive the patient fixation device to move along the first direction.

[0020] Preferably, the limiting portion includes a first limiting portion and a second limiting portion disposed opposite to each other. In use, the patient's leg is located between the first limiting portion and the second limiting portion. The patient fixation device further includes a third driving device for adjusting the position of the first limiting portion; and / or,

[0021] The patient fixation device further includes a fourth driving device, which is used to adjust the position of the second limiting part.

[0022] Preferably, the device further includes a rotating device, the patient fixation device being connected to the rotating device, the rotating device being used to drive the patient fixation device to rotate circumferentially.

[0023] Preferably, the first driving device includes an actuating part and a telescopic rod, the actuating part being used to drive the telescopic rod to extend or retract, and the first driving device further includes a speed reducer connected to the actuating part.

[0024] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0025] The radiotherapy device of the present invention, by placing at least a portion of the scanning device and at least a portion of the positioning device below the floor of the treatment room, can reduce the space occupied by the radiotherapy device in the treatment room, making the treatment room more tidy and avoiding interference with other equipment in the treatment room. By simultaneously placing the patient fixation device and the scanning device on the positioning device, not only can the overall structure of the radiotherapy device be made compact, reducing the overall size of the radiotherapy device, but the scanning device can also move synchronously with the patient fixation device, that is, move synchronously with the patient. The scanning device can scan the patient in a timely manner, ensuring accurate positioning of the patient's affected area and accelerating the treatment process, thereby ensuring treatment effect and efficiency. Furthermore, the scanning device can also scan patients at different tilt angles, further refining the positioning of the patient's affected area and thus further improving the treatment effect. Attached Figure Description

[0026] Figure 1 This is an exploded view of the radiotherapy device according to an embodiment of the present invention.

[0027] Figure 2 This is a three-dimensional structural diagram of the scanning element and the support in an embodiment of the present invention when both are retracted.

[0028] Figure 3 This is a three-dimensional structural diagram of the scanning element shrinking and the support extending in an embodiment of the present invention.

[0029] Figure 4 This is a three-dimensional structural diagram of the scanning element and the support in an embodiment of the present invention when both are extended.

[0030] Figure 5 This is a three-dimensional structural diagram of the placement device in an embodiment of the present invention.

[0031] Figure 6 This is a three-dimensional structural diagram of the scanning device in an embodiment of the present invention.

[0032] Figure 7 This is a three-dimensional structural diagram of the lifting device in an embodiment of the present invention.

[0033] Figure 8 This is an exploded view of the patient fixation device in an embodiment of the present invention.

[0034] In the diagram: 100. Radiotherapy equipment; 1. Patient fixation device; 11. Support base; 12. Bearing surface; 13. Backrest; 14. Adjustment mechanism; 15. Limiting part; 151. First limiting part; 152. Second limiting part; 16. Second driving device; 17. Third driving device; 18. Fourth driving device; 2. Scanning device; 21. Scanning element; 22. Support; 221. First support; 222. Second support; 223. Lifting part; 3. Positioning device; 31. First support platform; 311. First support Part; 3111, First through hole; 312, Second support part; 3121, Second through hole; 313, Connecting part; 314, Accommodating space; 32, Second support platform; 321, Third through hole; 33, First driving device; 331, Actuating part; 332, Telescopic rod; 333, Reducer; 34, Connecting piece; 4, Rotating platform; 5, Lifting device; 51, First bearing part; 52, Second bearing part; 53, Slider; 54, Guide rail; 200, Patient; 300, Center point; 400, Particle beam. Detailed Implementation

[0035] 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.

[0036] The terms used to express position and direction in this invention are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this invention.

[0037] Reference Figures 1 to 8This invention provides a radiotherapy device 100, comprising: a patient fixation device 1, a scanning device 2, and a positioning device 3, wherein the patient fixation device 1 and the scanning device 2 are both disposed on the positioning device 3. A patient 200 can sit or lie on the patient fixation device 1, and in some cases, the patient 200 can also stand on the patient fixation device 1. The scanning device can scan the patient 200 to obtain location information and image information of the affected area. The positioning device 3 can position the patient fixation device 1, thereby causing the patient fixation device 1 to move the patient 200 to a preset position, such as the isocenter point 300 of the radiotherapy device 100, specifically the isocenter point 300 of the treatment head (not shown) of the radiotherapy device 100. The treatment head can provide a particle beam 400, such as a proton beam, which can perform radiotherapy on the affected area of ​​the patient 200 located at the isocenter point 300. In this application, the position of the treatment head can be fixed. By changing the relative position of the patient's lesion and the treatment head through the positioning device 3, not only can the treatment head treat the patient's lesion, but the treatment head can also treat the patient's lesion from different angles.

[0038] Furthermore, keeping the treatment head in a fixed position not only simplifies the structure and reduces the size of the radiotherapy device 100, but also eliminates the need to control the movement of the treatment head; only the positioning of the patient 200 needs to be controlled, significantly reducing the difficulty of developing and controlling the control algorithm. In other words, the position of the treatment head can be fixed, and the relative position between the patient's affected area and the treatment head can be changed by the positioning device 3 to allow the treatment head to treat the patient's affected area from different angles.

[0039] Specifically, refer to Figure 2 , Figure 3 , Figure 4 The patient restraint device 1 can be positioned close to the center of the positioning device 3, or it can be positioned elsewhere as needed. The patient restraint device 1 supports the patient 200. The patient restraint device 1 can be shaped like a chair or a hospital bed. The patient 200 can sit or lie on the patient restraint device 1, and the arrangement can be adjusted according to the specific usage scenario. In some cases, the patient 200 can also stand on the patient restraint device 1.

[0040] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6The scanning device 2 may include a scanning element 21 and a support 22. The scanning element 21 may be disposed on the support 22 and is movable in the extension direction of the support 22. That is, the scanning element 21 can move relative to the patient 200 along the extension direction of the support 22. As an example, when the scanning element 21 moves relative to the support 22, the support 22 may remain stationary, i.e., only the scanning element 21 is moving. The support 22 may also move, and the support 22 may drive the scanning element 21 to move. In other words, the scanning element 21 and the support 22 may move simultaneously. Both of these movement methods allow the scanning element 21 to move relative to the patient 200 along the extension direction of the support 22. When the scanning element 21 is fixed relative to the support 22, i.e., the scanning element 21 does not move, the support 22 may move. The support 22 may drive the scanning element 21 to move, so that the scanning element 21 can move relative to the patient 200 along the extension direction of the support 22.

[0041] The scanner 21 is used to scan the patient 200 to obtain information such as the location, shape, and volume of the affected area. The scanner 21 can be a scanning unit on a computed tomography (CT) scanner used to scan the patient; that is, the scanner 21 is the CT scanner unit. The CT scanner unit can be circular in shape, and its length can be less than the height of the patient 200, thus reducing the overall volume of the CT scanner unit and consequently the overall volume of the radiotherapy equipment 100. The CT scanner unit has a through-hole extending vertically (height) and can be fitted around the patient 200. The CT scanner unit and the patient 200 can move relative to each other to allow the CT scanner unit to perform a comprehensive scan of the patient 200.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The positioning device 3 may include a first support platform 31, a second support platform 32, and a first drive device 33. The first support platform 31 and the second support platform 32 can be connected through the first drive device 33. The patient fixation device 1 and the scanning device 2 can both be set on the first support platform 31. The first drive device 33 can drive the first support platform 31 to move, and the scanning device 2 can move synchronously. The first drive device 33 can move the affected area of ​​the patient 200 to the isocenter point 300 of the radiotherapy device 100. In other words, the positioning device 3 can drive the patient fixation device 1 to rotate and move, thus changing the position and angle of the patient fixation device 1. This allows the patient fixation device 1 to move the patient 200, shifting the affected area to the isocenter point 300 of the radiotherapy device 100. It can also change the relative angle between the patient 200's affected area and the treatment head, allowing the treatment head to treat the patient 200's affected area from different angles. This improves treatment effectiveness and speed. For example, during treatment, the treated affected area can be moved out of the isocenter point 300, and areas requiring further treatment can be moved to the isocenter point 300. This not only prevents overtreatment and damage to the patient 200 but also accelerates the treatment process. With the treatment head position fixed, the positioning device 3 changes the relative position between the patient 200 and the treatment head, allowing the treatment head to treat the patient 200 from different angles. This not only ensures treatment effectiveness but also speeds up the treatment process of the radiotherapy device 100, while significantly reducing the complexity of algorithm development and control.

[0043] The positioning device 3 can drive the patient fixation device 1 and the scanning device 2 to rotate and move synchronously. This ensures that the relative position between the scanning device 2 and the patient 200 remains unchanged. When scanning the patient 200 is required, there is no need to readjust the relative position between the scanning device 2 and the patient 200. This not only allows for timely scanning of the patient 200, saving treatment head waiting time, accelerating the treatment process, and improving treatment efficiency, but also allows the scanning device 2 to scan the patient 200 at different tilt angles, ensuring scanning accuracy. Especially when the patient 200 is at different tilt angles, the affected area of ​​the patient 200 may shift due to gravity. The scanning device 21 can accurately and promptly acquire the position of the affected area, ensuring timely and accurate movement of the affected area to the isocenter point 300. This ensures treatment precision, improves treatment effectiveness, avoids damage to other parts of the patient 200, and increases patient satisfaction. Simultaneously, the operator can obtain information such as the position of the patient 200's affected area and the treatment progress in a timely manner, facilitating operation and reducing operational difficulty.

[0044] The second support platform 32 can be located below the floor of the treatment room. The first driving device 33 can move the upper surface of the first support platform 31 to a position close to the floor of the treatment room. The upper surface of the scanning element 21 can be moved to a position below the upper surface of the first support platform 31 or to a position approximately flush with the upper surface of the first support platform 31. As an example, when the radiotherapy equipment 100 is in its initial state, or when the radiotherapy equipment 100 is installed, the upper surface of the first support platform 31 can be set approximately flush with the floor of the treatment room, that is, the positioning device 3 can be located below the floor of the treatment room. This can greatly reduce the space occupied by the radiotherapy equipment 100 in the treatment room, making the treatment room more tidy and avoiding interference with other equipment in the treatment room. The upper surface of the scanner 21 can also be roughly flush with the floor of the treatment room, meaning the scanner 21 can be positioned below the floor. This significantly reduces the space occupied by the radiotherapy equipment 100 within the treatment room, making the room cleaner and preventing interference with other equipment. It also prevents the scanner 21 from obstructing the transmission path of the particle beam 400, ensuring the treatment head can effectively treat the patient 200. When the radiotherapy equipment 100 is operating, the first drive device 33 can move the upper surface of the first support platform 31 above the floor of the treatment room, and the upper surface of the scanner 21 can also be moved above the floor of the treatment room. The term "flush" in this application does not refer to absolute flush, but rather to a situation where the distance between the two surfaces in the height direction is relatively short.

[0045] In some embodiments, when the radiotherapy equipment 100 is installed, at least part of the patient fixation device 1 can also be installed below the floor of the treatment room. This can also greatly reduce the space occupied by the radiotherapy equipment 100 in the treatment room, making the treatment room more tidy and avoiding interference with other equipment in the treatment room. When the radiotherapy equipment 100 is in operation, the patient fixation device 1 can be moved above the floor of the treatment room.

[0046] In this application, by placing at least part of the scanning device 2 and at least part of the positioning device 3 below the floor of the treatment room, the space occupied by the radiotherapy equipment 100 in the treatment room can be reduced, making the treatment room more tidy and avoiding interference with other equipment in the treatment room. By simultaneously placing the patient fixation device 1 and the scanning device 2 on the positioning device 3, not only can the overall structure of the radiotherapy equipment 100 be made compact, reducing its overall size, but the scanning device 2 can also move synchronously with the patient fixation device 1, that is, synchronously with the patient 200. The scanning device 2 can scan the patient 200 in a timely manner, ensuring accurate positioning of the affected area of ​​the patient 200 and accelerating the treatment process, thereby ensuring treatment effect and efficiency. Furthermore, the scanning device 2 can also scan the patient 200 at different tilt angles, further improving the accuracy of positioning of the affected area of ​​the patient 200, thereby further improving the treatment effect.

[0047] In one specific implementation, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 The stent 22 can be a telescopic stent 22, meaning it can extend or retract. When the stent 22 is extended, its overall length is relatively long, ensuring that the scanner 21 has sufficient travel to perform a comprehensive scan of the patient 200. For example, the scanning formation of the scanner 21 can cover the isocenter point 300 of the treatment head, and the scanning travel of the scanner 21 can cover the height from the patient 200's brain to the patient 200's pelvis. When the stent 22 is retracted, its overall length is relatively short, which can greatly reduce the overall volume of the stent 22. This not only reduces the overall volume of the radiotherapy equipment 100 but also reduces the space requirements under the treatment room floor, thereby reducing the difficulty and cost of constructing the treatment room.

[0048] Reference Figure 1 , Figure 6The support 22 may include at least two lifting sections 223, at least one of which can move up and down along the other lifting section 223 in the extension and retraction direction of the support 22. The scanning element 21 may be connected to one of the lifting sections 223. The lifting section 223 can drive the scanning element 21 to move up and down in the extension and retraction direction of the support 22, and the scanning element 21 can also move up and down along the lifting section 223 in the extension and retraction direction of the support 22. In other words, the scanning element 21 can move up and down simultaneously with the lifting section 223, and the scanning element 21 can also move up and down along the lifting section 223. This further increases the stroke of the scanning element 21. With the stroke of the scanning element 21 remaining constant, the overall length of the support 22 can be reduced, thereby further reducing the overall volume of the radiotherapy equipment 100 and further reducing the space requirements under the treatment room floor, thus further reducing the difficulty and cost of constructing the treatment room.

[0049] As a preferred method, refer to Figure 2 The top of the support 22 can retract to below the upper surface of the first support platform 31, or the top of the support 22 can move to a position approximately flush with the upper surface of the first support platform 31. As an example, when installing the radiotherapy equipment 100, the support 22 can be positioned below the floor of the treatment room. This significantly reduces the space occupied by the radiotherapy equipment 100 within the treatment room, making the room cleaner and preventing interference with other equipment. It also prevents the support 22 from obstructing the transmission path of the particle beam 400, ensuring that the treatment head can treat the patient 200. When the radiotherapy equipment 100 is operating, the top of the support 22 can move above the floor of the treatment room to increase the travel of the scanner 21, ensuring that the scanner 21 can perform a full scan of the patient 200.

[0050] The number of supports 22 can be one or more, which can be set according to actual needs. In this embodiment, refer to... Figure 1 , Figure 6 The number of supports 22 is two, that is, the supports 22 may include a first support 221 and a second support 222 arranged opposite to each other. The first support 221 and the second support 222 can be connected to opposite sides of the scanning element 21 respectively. The structure of the first support 221 and the second support 222 is preferably the same, and the first support 221 and the second support 222 can operate synchronously. This ensures that the raising and lowering of the scanning element 21 is more stable and precise, thereby ensuring stable and accurate scanning of the affected area of ​​the patient 200 to obtain clear image information of the affected area of ​​the patient 200. This, in turn, ensures that the affected area of ​​the patient 200 is accurately moved to the isocenter point 300 to improve the treatment effect.

[0051] In some embodiments, the first support 221 and the second support 222 can operate independently of each other, allowing the two sides of the scanning element 21 to be on different horizontal planes, i.e., the scanning element 21 can be tilted. This changes the angle of the scanning element 21 toward the patient 200, allowing the scanning element 21 to scan the patient 200 from different angles. In some embodiments, the scanning element 21 can also rotate relative to the support 22, which similarly changes the angle of the scanning element 21 toward the patient 200, allowing the scanning element 21 to scan the patient 200 from different angles.

[0052] In one embodiment, reference is made to Figure 1 , Figure 5 The first driving device 33 can be an actuator. Its two ends can be connected to the first support platform 31 and the second support platform 32, respectively. The first driving device 33 drives the first support platform 31 to move and / or rotate the patient 200. The second support platform 32 provides support for the first driving device 33. During the extension and retraction of the first driving device 33, the first driving device 33 does not drive the second support platform 32 to move. Each first driving device 33 can operate independently, and its extension and retraction can change the position of the first support platform 31. When the ends of adjacent first driving devices 33 near the first support platform 31 move closer together, their ends near the second support platform 32 move further apart; conversely, when the ends of adjacent first driving devices 33 near the first support platform 31 move further apart, their ends near the second support platform 32 move closer together. In other words, two adjacent first driving devices 33 can be arranged in a roughly V-shaped configuration. The number of first drive devices 33 can be six. By extending and retracting the six first drive devices 33, the first support platform 31 can be driven to move freely in space in six degrees of freedom, including three-dimensional translation (X, Y, Z axis directions) and three-dimensional rotation (rotation around the X, Y, Z axes).

[0053] Reference Figure 5The first driving device 33 has two ends that can be movably connected to the first support platform 31 and the second support platform 32, respectively. One end of the first driving device 33 can be connected to the lower surface of the first support platform 31, and the other end can be connected to the upper surface of the second support platform 32. That is, the first driving device 33 can bend or rotate relative to the first support platform 31, and it can also bend or rotate relative to the second support platform 32. Thus, when one or more of the first driving devices 33 drive the first support platform 31, the position of the first support platform 31 changes. Other first driving devices 33 may not drive the first support platform 31, and they will rotate relative to the first support platform 31 and the second support platform 32, changing their tilt angle relative to the first support platform 31 and the second support platform 32. This changes the position and posture of the first support platform 31, and consequently, the position and posture of the patient 200.

[0054] The two ends of the first driving device 33 can be hinged to the first support platform 31 and the second support platform 32 respectively, and the two ends of the first driving device 33 can also be slidably connected to the first support platform 31 and the second support platform 32 respectively. In this embodiment, the two ends of the first driving device 33 are hinged to the first support platform 31 and the second support platform 32 respectively, that is, the first driving device 33 can move relative to the first support platform 31, for example, the first driving device 33 can rotate relative to the first support platform 31, and the first driving device 33 can move relative to the second support platform 32, for example, the first driving device 33 can rotate relative to the second support platform 32. In this way, the first driving device 33 can not only drive the first support platform 31 to translate, but also drive the first support platform 31 to rotate, thereby changing the position and posture of the first support platform 31, and thus changing the position and posture of the patient 200, ensuring that the affected area of ​​the patient 200 is moved to a preset position, such as the isocenter point 300 of the radiotherapy device 100.

[0055] Reference Figure 1 , Figure 5 The two ends of the first driving device 33 can be movably connected to the first support platform 31 and the second support platform 32 respectively via connectors 34. Each end of the first driving device 33 can be provided with a connector 34. The connector 34 can be a hinge joint, and the two ends of the first driving device 33 can be hingedly connected to the first support platform 31 and the second support platform 32 respectively via hinge joints.

[0056] Reference Figure 1 , Figure 5The first support platform 31 may include a first support part 311, a second support part 312 and a connecting part 313. The first support part 311 may be disposed above the second support part 312. The first support part 311 and the second support part 312 may be connected by the connecting part 313. The second support part 312 and the connecting part 313 may form an accommodating space 314. At least a portion of the patient fixation device 1 and at least a portion of the scanning device 2 may be disposed in the accommodating space 314.

[0057] The first support portion 311 can be flat, and its shape can be circular, square, or other shapes. In this embodiment, the first support portion 311 is approximately annular. A first through hole 3111 is provided near the center of the first support portion 311, and the first through hole 3111 communicates with the receiving space 314. The patient fixation device 1 and the scanning device 2 can be moved out of or into the receiving space 314 through the first through hole 3111. The second support portion 312 can be flat, and its shape can be circular, square, or other shapes. In this embodiment, the second support portion 312 is approximately annular. A second through hole 3121 is provided near the center of the second support portion 312 along the vertical direction, at least partially aligned with the through portion. The second through hole 3121 can reduce the weight of the second support portion 312, thereby reducing the load on the first driving device 33.

[0058] The second support platform 32 can be flat, and its shape can be circular, square, or other shapes. In this embodiment, the second support platform 32 is circular, and more preferably, it is an annular. A third through hole 321, at least partially aligned with the second through hole 3121, can be provided near the center of the second support platform 32 along the vertical direction. The third through hole 321 is larger than the second through hole 3121, which not only reduces the weight of the second support platform 32 and the driving force required for its rotation, but also saves material costs. Furthermore, the third through hole 321 can provide more space for the first support platform 31 to move.

[0059] The first driving device 33 may include an actuator 331 and a telescopic rod 332. The actuator 331 may be disposed toward the second support platform 32, and the telescopic rod 332 may be disposed toward the first support platform 31. The actuator 331 is used to drive the telescopic rod 332 to extend or retract, so that the first support platform 31 moves and / or rotates the patient 200. In this embodiment, one end of the telescopic rod 332 may be connected to the first support platform 31 through a connector 34, and the other end of the telescopic rod 332 may be connected to the actuator 331. The end of the actuator 331 away from the telescopic rod 332 may be connected to the second support platform 32 through the connector 34.

[0060] The actuator 331 can drive the telescopic rod 332 by means of hydraulic, pneumatic, or electric means. In this embodiment, the actuator 331 drives the telescopic rod 332 by means of electric means. This can improve the driving accuracy of the brake, thereby improving the movement accuracy of the first support platform 31. This ensures that the affected area of ​​the patient 200 coincides with the isocenter point 300 of the radiotherapy equipment 100, thereby improving the treatment effect and avoiding damage to other parts of the patient 200 by the radiotherapy equipment 100.

[0061] The first drive device 33 may further include a reducer 333, which can be connected to the actuator 331. The actuator 331 outputs high speed but low torque. The high speed of the actuator 331 results in relatively poor accuracy. The reducer 333 can change the high speed to low torque output of the actuator 331 to a low speed to high torque output. That is, the reducer 333 reduces the speed of the actuator 331 during movement but greatly increases the torque, thereby enhancing the stability and accuracy of the movement of the first support platform 31. At the same time, the reducer 333 can make the movement of the first support platform 31 smoother, avoiding vibration or instability caused by speed changes, thus better driving the movement of the first support platform 31. Without the reducer 333, the actuator 331 must directly bear a large load, which will cause the actuator 331 to overwork, increase energy consumption and aggravate mechanical wear. By reducing the load on the actuator 331, the reducer 333 can keep the actuator 331 in a more efficient and stable operating range, thereby extending the service life of the actuator 331.

[0062] As a preferred method, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The radiotherapy device 100 may further include a rotating platform 4, and a second support platform 32 may be disposed on the rotating platform 4 and be able to rotate around a first rotation axis. The second support platform 32 can drive the first support platform 31 to rotate around the first rotation axis, and the first support platform 31 can drive the patient 200 to rotate around the first rotation axis. The isocenter point 300 of the radiotherapy device 100 may be located on the first rotation axis. In other words, the second support platform 32 can drive the patient 200 to rotate around the isocenter point 300. This makes it easier to determine the positional relationship between the affected area of ​​the patient 200 and the isocenter point 300, thereby making it easier to move the affected area of ​​the patient 200 to the isocenter point 300. This can greatly reduce the difficulty of algorithm development and control, and also improve the treatment effect and efficiency.

[0063] The rotating platform 4 can be flat, and its shape can be circular, square, or other shapes. In this embodiment, the rotating platform 4 is circular, and more preferably, it is an annular. A fourth through hole 41 can be provided in the vertical direction near the middle of the rotating platform 4. The fourth through hole 41 can be corresponding to, or at least partially aligned with, the third through hole 321. The fourth through hole 41 not only saves material costs, but also provides more room for the first support platform 31 to move.

[0064] In one specific implementation, refer to Figure 1 , Figure 7 The radiotherapy device 100 may also include a lifting device 5, and a patient fixation device 1 may be connected to the lifting device 5. The lifting device 5 is used to drive the patient fixation device 1 to move along a first direction, and the patient fixation device 1 can drive the patient 200 to move in the first direction. The first direction is preferably parallel to the extension direction of the support 22. That is, when the lifting device 5 drives the patient 200 to move up and down, the scanning element 21 can remain stationary, so that the scanning element 21 can also scan different areas of the patient 200. When the lifting device 5 drives the patient 200 to move up and down, the scanning element 21 can also move up and down. For example, when the lifting device 5 drives the patient 200 to move up and down, the scanning element 21 can move upward, which can reduce the relative movement speed between the patient 200 and the scanning element 21 and improve the movement accuracy between the scanning element 21 and the patient 200. When the lifting device 5 drives the patient 200 to move up and down, the scanning element 21 can move downward, which can increase the relative movement speed between the patient 200 and the scanning element 21 and improve the scanning speed of the scanning element 21.

[0065] Furthermore, the lifting device 5 drives the patient 200 to rise and fall, which can compensate for the travel range of the scanner 21. This is equivalent to increasing the travel of the scanner 21. With the travel of the scanner 21 remaining unchanged, the overall length of the support 22 can be further reduced, thereby further reducing the overall volume of the radiotherapy equipment 100. It can also further reduce the space requirements under the treatment room floor, thereby further reducing the difficulty and cost of constructing the treatment room. As an example, when the scanner 21 rises to its highest position, the affected area of ​​the patient 200 is still above the scanner 21. The height of the patient 200 can be lowered by the lifting device 5, allowing the scanner 21 to scan the patient 200. When the scanner 21 falls to its lowest position, the affected area of ​​the patient 200 is still below the scanner 21. The height of the patient 200 can be raised by the lifting device 5, allowing the scanner 21 to scan the patient 200.

[0066] Specifically, refer to Figure 1 , Figure 8The patient fixation device 1 is shaped like a chair. The patient fixation device 1 may include a support base 11 and a bearing surface 12, a backrest 13, an adjustment mechanism 14 and a limiting part 15 disposed on the support base 11. The bearing surface 12 is used to support the patient 200. For example, the patient 200 can sit on the bearing surface 12 and the back of the patient 200 can lean against the backrest 13. The limiting part 15 is used to restrict the position of the patient 200's legs to improve the stability of the patient 200's position when in the patient fixation device 1, prevent the patient 200 from slipping off the patient fixation device 1, and also prevent the patient 200's position from shifting, thereby ensuring the accuracy of treatment. The support surface 12 and the backrest 13 can be connected by an adjustment mechanism 14. The support surface 12 and the backrest 13 can also be connected to the support surface 12 by the adjustment mechanism 14. The adjustment mechanism 14 can be used to adjust the tilt angle of the backrest 13 and the tilt angle of the support surface 12 so that the patient 200 is in different postures, such as sitting, semi-sitting, standing or lying down.

[0067] The patient fixation device 1 may also include a second drive device 16, such as a motor, which drives the support surface 12 to move up and down. This allows it to be matched with patients 200 of different heights, facilitating their movement up and down the patient fixation device 1 and improving their comfort. The second drive device 16 can drive the support surface 12 to move up and down along a second direction, which is preferably parallel to the extension direction of the support 22. The second drive device 16 can also compensate for the travel range of the scanning element 21 to some extent, thus increasing the travel of the scanning element 21. With the travel of the scanning element 21 remaining unchanged, the overall length of the support 22 can be further reduced, thereby further reducing the overall volume of the radiotherapy equipment 100 and the space requirements under the treatment room floor, thus further reducing the difficulty and cost of constructing the treatment room.

[0068] In some embodiments, the second drive device 16 is used to drive the adjustment mechanism 14 and adjust the angle between the bearing surface 12 and the backrest 13 to change the posture of the patient 200 when it is in the patient fixation device 1, such as making the patient 200 sit, semi-sit, stand or lie down.

[0069] Reference Figure 1The lifting device 5 may include a first support portion 51 and a second support portion 52. The first support portion 51 and the second support portion 52 are preferably arranged perpendicularly or approximately perpendicularly to each other. A support base 11 may be disposed on the first support portion 51, i.e., the patient fixation device 1 is disposed on the first support portion 51. A slider 53 may be disposed on the first support portion 51. A guide rail 54 extending along a first direction may be disposed on the second support portion 52. The first support portion 51 and the second support portion 52 can be slidably connected via the slider 53 and the guide rail 54. The first support portion 51 can drive the patient fixation device 1 to move along the first direction. The second support portion 52 can be directly or indirectly connected to the first support platform 31.

[0070] As a preferred method, refer to Figure 8 The limiting part 15 includes a first limiting part 151 and a second limiting part 152 disposed opposite to each other. In use, the patient 200's leg is located between the first limiting part 151 and the second limiting part 152, that is, the first limiting part 151 and the second limiting part 152 can limit the patient 200's leg from the front and rear direction. The height of the first limiting part 151 is preferably greater than the height of the second limiting part 152. For example, the first limiting part 151 can approximately limit the patient 200's knee position, and the first limiting part 152 can approximately limit the patient 200's ankle position.

[0071] The patient fixation device 1 may further include a third drive device 17, such as a motor, for adjusting the position of the first limiting part 151. The patient fixation device 1 may also include a fourth drive device 18, such as a motor, for adjusting the position of the second limiting part 152. In other words, the third drive device 17 and / or the fourth drive device 18 can adjust the distance between the first limiting part 151 and the second limiting part 152, that is, the third drive device 17 and / or the fourth drive device 18 can adjust the distance between the first limiting part 151 and the second limiting part 152 in the front-back direction of the patient 200, that is, the third drive device 17 and / or the fourth drive device 18 can adjust the gap between the first limiting part 151 and the second limiting part 152 to meet the needs of different patients 200 and improve the comfort of the patient 200.

[0072] The radiotherapy device 100 may further include a rotating device (not shown), and the patient fixation device 1 may be connected to the rotating device. The rotating device is used to drive the patient fixation device 1 to rotate circumferentially, thereby causing the patient 200 to rotate circumferentially. In this embodiment, the patient fixation device 1 may be disposed on the rotating device, which may be disposed on the first support portion 51. The rotating device can drive the patient fixation device 1 to rotate 360° circumferentially, and the patient fixation device 1 can cause the patient 200 to rotate 360° circumferentially. The rotating device can rotate the patient 200 to any required angle, thereby ensuring the treatment effect. At the same time, the rotating device has a faster response speed, accelerating the treatment process.

[0073] 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 radiotherapy device, characterized in that, include: A patient fixation device for supporting and securing a patient; A scanning device, comprising a scanning element and a support, wherein the scanning element is disposed on the support and is movable in the extending direction of the support, and the scanning element is used to scan a patient; A positioning device includes a first support platform, a second support platform, and a first drive device. The first support platform and the second support platform are spaced apart in the vertical direction and are connected by the first drive device. The patient fixation device and the scanning device are both disposed on the first support platform. The first drive device can drive the first support platform to move, and the scanning device can move synchronously. The second support platform is used to be installed below the floor of the treatment room. The first driving device can move the upper surface of the first support platform to a position close to the floor of the treatment room. The upper surface of the scanning element can be moved to a position below the upper surface of the first support platform or the upper surface of the scanning element can be moved to a position flush with the upper surface of the first support platform.

2. The radiotherapy device according to claim 1, characterized in that, The bracket is a telescopic bracket, which includes at least two lifting sections, and at least one of the lifting sections can be raised and lowered along the other lifting section in the telescopic direction of the bracket.

3. The radiotherapy device according to claim 1, characterized in that, The top of the bracket can retract to below the upper surface of the first support platform, or the top of the bracket can move to a position flush with the upper surface of the first support platform.

4. The radiotherapy device according to claim 1, characterized in that, The support includes a first support and a second support arranged opposite to each other, and the first support and the second support are respectively connected to opposite sides of the scanning element.

5. The radiotherapy device according to claim 1, characterized in that, The first support platform includes a first support part, a second support part, and a connecting part. The first support part is disposed above the second support part. The first support part and the second support part are connected by the connecting part. The second support part and the connecting part form an accommodating space. At least a portion of the patient fixation device and at least a portion of the scanning device are disposed in the accommodating space. The scanning element has a through part that extends vertically and can be fitted around the patient. A second through hole is provided near the middle position of the second support part, which is at least partially aligned with the through part. A third through hole is provided near the middle position of the second support platform, which is at least partially aligned with the second through hole.

6. The radiotherapy device according to claim 1, characterized in that, It also includes a rotating platform, wherein the second support platform is disposed on the rotating platform and is capable of rotating around the first rotation axis, and the isocenter point of the radiotherapy device is located on the first rotation axis.

7. The radiotherapy device according to claim 1, characterized in that, It also includes a lifting device, the patient fixation device is connected to the lifting device, the lifting device is used to drive the patient fixation device to move along a first direction, the first direction is parallel to the extension direction of the bracket.

8. The radiotherapy device according to claim 7, characterized in that, The patient fixation device includes a support base and a bearing surface, a backrest, an adjustment mechanism, and a limiting part disposed on the support base. The bearing surface is used to support the patient, the limiting part is used to restrict the position of the patient's legs, and the bearing surface and the backrest are connected through the adjustment mechanism. The lifting device includes a first bearing part and a second bearing part. The support base is disposed on the first bearing part. A slider is disposed on the first bearing part. A guide rail extending along a first direction is disposed on the second bearing part. The first bearing part and the second bearing part are slidably connected through the slider and the guide rail. The first bearing part can drive the patient fixation device to move along the first direction.

9. The radiotherapy device according to claim 8, characterized in that, The limiting portion includes a first limiting portion and a second limiting portion disposed opposite to each other. In use, the patient's leg is positioned between the first limiting portion and the second limiting portion. The patient fixation device further includes a third driving device for adjusting the position of the first limiting portion; and / or... The patient fixation device further includes a fourth driving device, which is used to adjust the position of the second limiting part.

10. The radiotherapy device according to claim 1, characterized in that, It also includes a rotating device, to which the patient fixation device is connected, and the rotating device is used to drive the patient fixation device to rotate circumferentially.

11. The radiotherapy device according to claim 1, characterized in that, The first driving device includes an actuating part and a telescopic rod. The actuating part is used to drive the telescopic rod to extend or retract. The first driving device also includes a speed reducer, which is connected to the actuating part.

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