A radiotherapy apparatus

Abstract

This application provides a radiotherapy device, comprising a radiation source, a treatment bed, and a shielding chamber. A treatment cavity is formed within the radiation source, and one end of the radiation source has an opening for the treatment bed to enter and exit the treatment cavity. The end of the treatment cavity opposite the opening is closed. The shielding chamber is disposed around the periphery of the radiotherapy device to shield the radiation generated by the device. By placing the shielding chamber around the radiotherapy device, this application at least partially shields the scattered radiation generated within the device. Therefore, it reduces the radiation shielding requirements of a dedicated treatment room or eliminates the reliance on a dedicated treatment room for radiotherapy equipment.

Description

Technical Field

[0001] This application relates to the field of medical technology, and in particular to a radiotherapy device. Background Technology

[0002] With the development of medical technology, radiation has become an important tool in medical diagnosis and treatment. Radiation emitted from a radiation source passes through the human body at different angles to diagnose and treat patients. Because radiation diagnostic or treatment equipment is radioactive, it can cause harm to operators or other personnel during diagnosis and treatment. Therefore, existing facilities housing radiation therapy equipment need to be modified to provide sufficient radiation shielding to ensure that operators or other personnel are not harmed. Summary of the Invention

[0003] In view of this, one of the technical problems solved by the embodiments of this application is to provide a radiotherapy device to overcome at least some of the problems existing in the prior art.

[0004] This application provides a radiotherapy device, which includes a radiation source device, a treatment bed, and a shielding chamber. A treatment cavity is formed within the radiation source device. One end of the radiation source device has an opening for the treatment bed to enter and exit the treatment cavity. The end of the treatment cavity opposite to the opening is closed. The shielding chamber is disposed around the periphery of the radiotherapy device to shield the radiation generated by the radiotherapy device.

[0005] As can be seen from the above technical solutions, the radiotherapy equipment described in this application embodiment includes a radiation source device, a treatment bed, and a shielding chamber. A treatment cavity is formed within the radiation source device. One end of the radiation source device has an opening for the treatment bed to enter and exit the treatment cavity. The end of the treatment cavity opposite to the opening is closed. The shielding chamber is disposed around the periphery of the radiotherapy equipment to shield the radiation generated by the radiotherapy equipment. By placing the shielding chamber around the periphery of the radiotherapy equipment, this application embodiment at least partially shields the scattered radiation generated in the radiotherapy equipment. Therefore, it can reduce the radiation shielding requirements of a dedicated machine room or eliminate the dependence of the radiotherapy equipment on a dedicated machine room. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0007] Figure 1This is a schematic diagram of the structure of the radiotherapy device according to Embodiment 1 of this application;

[0008] Figure 2 This is a schematic diagram of another radiotherapy device according to an embodiment of this application;

[0009] Figure 3 This is a schematic diagram of another radiotherapy device according to an embodiment of this application;

[0010] Figure 4 Another schematic diagram of the structure of a radiotherapy device according to an embodiment of this application;

[0011] Figure 5 for Figure 4 Top view;

[0012] Figure 6 This is a schematic diagram of the structure of another radiotherapy device according to an embodiment of this application;

[0013] Figure 7 This is a schematic diagram illustrating the coupling between the shielding compartment and the shielding layer through an adapter structure in an embodiment of this application.

[0014] Figure 8 This is a schematic diagram illustrating the coupling between the shielding compartment and the shielding layer via an intermediate connector in an embodiment of this application.

[0015] Figure 9 This is a schematic diagram of the intermediate connector structure in an embodiment of this application;

[0016] Figure 10 This is a schematic diagram of the structure of a shielding chamber formed by splicing together shielding shell segments according to an embodiment of this application;

[0017] Figures 11a-11f This is a schematic diagram of different shielding shell segments spliced ​​together to form a shielding chamber in an embodiment of this application;

[0018] Figure 12 This is a schematic diagram illustrating how multiple shielding shell segments are spliced ​​together using an adapter structure, according to an embodiment of this application.

[0019] Figure 13 This is a schematic diagram of the patient entrance in an embodiment of this application;

[0020] Figures 14a-14b This is a schematic diagram of the suspended roller structure in an embodiment of this application;

[0021] Figure 15 This is a schematic diagram of the structure of the operating port in the embodiments of this application;

[0022] Figure 16 This is a schematic diagram of the isolation chamber structure in an embodiment of this application;

[0023] Figure 17 This is a schematic diagram of the isolation chamber structure in an embodiment of this application;

[0024] Figure 18 This is a schematic diagram of the revolving door structure in an embodiment of this application;

[0025] Figure 19 This is a schematic diagram of the fresh air system structure in an embodiment of this application;

[0026] Figure 20 This is a schematic diagram of the uniformly distributed structure of multiple radiation sources in the source carrier of the radiation source device according to an embodiment of this application;

[0027] Figure 21 This is a schematic diagram of the centralized arrangement structure of multiple radiation sources in the source carrier of the radiation source device in the embodiments of this application;

[0028] Figure 22 This is a schematic diagram of the optical monitoring system installed on the treatment bed according to an embodiment of this application.

[0029] 1. Source device; 11. Treatment cavity; 111. Opening; 112. Closed end; 113. Shielding plug; 12. Source carrier; 121. Radiation source; 1211. Radiation source group; 13. Collimator; 131. Collimation hole; 14. Shielding layer; 15. Entrance; 2. Treatment bed; 21. Motion bed body; 22. Base; 3. Shielding chamber; 33. First groove; 34. Second groove; 3'. Shielding shell segment; 5. Patient entrance; 53. First hand crank; 51. First top roller; 52. First bottom slide rail; 6. Operating port; 7. Isolation chamber; 71. Hollow cavity; 72. Outer door; 73. Third hand crank; 8. Optical monitoring system. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0031] Radiotherapy equipment is used in cancer treatment. It kills tumor cells by emitting radiation, thus treating patients. Therefore, radiotherapy equipment typically needs to be placed in a dedicated room with radiation shielding capabilities to prevent radiation from harming operators or other personnel. However, the construction time and cost of such dedicated rooms limit the widespread application of radiotherapy equipment.

[0032] This application provides a radiotherapy device, such as... Figure 1 , 2As shown, the radiotherapy device includes:

[0033] The source device 1 has a treatment cavity 11 formed inside it. One end of the source device 1 has an opening 111 for the treatment bed to enter and exit the treatment cavity. The end of the treatment cavity 11 opposite to the opening 111 is a closed end 112.

[0034] Treatment bed 2 is used to carry the patient and move the patient into or out of the treatment cavity 11;

[0035] The shielding chamber 3 is located around the radiotherapy equipment to shield the radiation generated by the radiotherapy equipment.

[0036] This application embodiment sets up a shielding chamber around the radiotherapy equipment, which at least partially shields the scattered rays generated in the radiotherapy equipment. Therefore, it can reduce the radiation shielding requirements of a dedicated machine room or eliminate the dependence of radiotherapy equipment on a dedicated machine room.

[0037] In the embodiments of this application, such as Figure 1 As shown, the radiation source device 1 includes a source carrier 12 and a collimator 13. Both the source carrier 12 and the collimator 13 are hemispherical structures. The collimator 13 is disposed inside the source carrier 12, and the inner cavity of the collimator 13 forms the treatment cavity 11 of the radiation source device. The treatment cavity 11 is used to accommodate the patient. A radiation source 121 is disposed on the source carrier 12, and a collimation hole 131 corresponding to the radiation source is provided on the collimator 13. The rays emitted by the radiation source 121 pass through the collimation hole 131 and are focused at the focal point O in the treatment cavity 11. The open ends of the hemispherical source carrier 12 and the collimator 13 allow the treatment bed 2 to enter and exit the treatment cavity 11, forming the opening 111 of the treatment cavity 11. The closed ends of the hemispherical source carrier 12 and the collimator 13 constitute the closed end 112 of the treatment cavity 11.

[0038] In the embodiments of this application, such as Figure 2 As shown, the radiation source device 1 includes a source carrier 12 and a collimator 13. Both the source carrier 12 and the collimator 13 are hollow cylindrical structures (e.g., conical cylinders). The collimator 13 is disposed inside the source carrier 12, and the inner cavity of the collimator 13 forms the treatment cavity 11 of the radiation source device 1. The treatment cavity 11 is used to accommodate the patient. A radiation source 121 is disposed on the source carrier 12, and a collimator 13 is provided with a collimation hole 131 corresponding to the radiation source 121. The radiation emitted by the radiation source 121 passes through the collimation hole 131 and is focused on the focal point O in the treatment cavity 11. One end of the hollow cylindrical source carrier 12 and the collimator 13 allows the treatment bed 2 to enter and exit the treatment cavity 11, forming an opening 111 of the treatment cavity 11. The other end of the hollow cylindrical source carrier 12 and the collimator 13 is sealed with a shielding plug 113, forming a closed end 112 of the treatment cavity 11.

[0039] In one embodiment of this application, the shielding chamber is disposed around the radiation source device and the treatment bed, forming a non-enclosed body to shield the radiation generated by the radiotherapy equipment.

[0040] The treatment bed includes a motion bed body and a base.

[0041] like Figure 1 , 2 As shown, the shielding chamber 3 surrounds the motion bed body 21, base 22 and radiation source device 1 of the treatment bed 2 from the front, left and right sides of the radiotherapy equipment. The rear side of the radiotherapy equipment is open. The shielding chamber 3 is used to shield the radiation rays scattered from the front, left and right sides of the radiation source device.

[0042] Although the shielding chamber in this embodiment does not shield the radiation rays scattered from the rear of the radiation source device, it at least reduces the requirements of the radiotherapy equipment room. Only the wall opposite the rear of the radiation source device needs to be modified for radiation shielding to achieve shielding of the scattered radiation from the radiotherapy equipment, which shortens the construction cycle of the equipment room and reduces the construction cost of the equipment room.

[0043] In addition, since the motion bed body 21 and base 22 of the treatment bed 2 are both enclosed in the shielded chamber 3, the space available for the patient in the entire shielded chamber 3 is increased, which helps to alleviate the patient's claustrophobia symptoms.

[0044] This application does not limit the form of the non-enclosed shielding chamber. The non-enclosed shielding chamber can also be set to be open on the front, or open on the rear, or open on the left. This application does not limit this.

[0045] In one embodiment of this application, the shielding chamber is disposed around the radiation source device and the treatment bed to form a closed body, thereby shielding the radiation generated by the radiotherapy equipment.

[0046] The treatment bed includes a motion bed body and a base.

[0047] like Figure 3 As shown, the shielding chamber 3 completely encloses the radiation source device 1, the motion bed 21, and the base 22, that is, the shielding chamber 3 surrounds the radiotherapy equipment from all sides, forming a closed system. The shielding chamber 3 can shield radiation rays scattered from the front, left, rear, and right sides of the radiation source device.

[0048] This application embodiment creates a self-shielding environment for the radiotherapy equipment by setting up a closed shielding chamber around the equipment, thereby eliminating the need for a dedicated machine room. The self-shielded radiotherapy equipment can be placed in any location, expanding the application scenarios of the radiotherapy equipment.

[0049] In addition, since the motion bed body 21 and base 22 of the treatment bed 2 are both enclosed in the shielded chamber 3, the space available for the patient in the entire shielded chamber 3 is increased, which helps to alleviate the patient's claustrophobia symptoms.

[0050] The source device described in this application includes a shielding layer. The shielding chamber has at least one entrance, which is a third openable shielding door. The third openable shielding door is located in the shielding chamber directly opposite the shielding layer of the source device, and the opening size of the third openable shielding door is smaller than the size of the shielding layer of the source device in the axial direction of the source device.

[0051] like Figure 4 , 5 As shown, a shielding layer 14 is provided on the outside of the source carrier 12 of the radiation source device to surround the source carrier 12, thereby shielding the radiation rays scattered from the left, right, rear and top of the source carrier 1. The shielding chamber 3 completely covers the source carrier 1, the motion bed 21 and the base 22. The shielding chamber 3 has an entrance 15, which is a third openable shielding door. The third openable shielding door is located on the side wall of the shielding chamber 3, facing the shielding layer 14 of the source carrier. The opening size A of the third openable shielding door (i.e., the size of the third openable shielding door along the axial direction of the source carrier) is smaller than the size B of the shielding layer 14 of the source carrier in the axial direction of the source carrier. This ensures that when the third openable shielding door is opened, the radiation rays at the opening are shielded by the shielding layer 14 of the source carrier, and the radiation rays in the shielding chamber 3 will not leak from the opening of the third openable shielding door.

[0052] The interface F between the third openable shielding door and the shielding chamber 3 is a non-straight-face splicing interface to ensure that radiation rays do not leak from the interface between the shielding door and the shielding chamber. Figure 5 As shown, the non-straight-face splicing interface F can be a V-shaped surface, or a curved surface, an S-shaped surface, or a stepped surface. The embodiments of this application are not limited to the above-mentioned non-straight-face splicing interface, and other non-straight-face splicing interfaces can also be used to achieve the same result.

[0053] In one embodiment of this application, the radiation source device includes a shielding layer, the shielding chamber is disposed around the treatment bed, and the shielding layer is coupled to the shielding chamber to form a closed body to shield the radiation generated by the radiotherapy equipment.

[0054] like Figure 6As shown, a shielding layer 14 is provided on the outside of the source carrier 12 of the radiation source device to surround the source carrier 12, thereby shielding the radiation rays scattered from the left, right, rear and top of the radiation source device. The shielding chamber 3 is arranged around the treatment bed 2, covering the moving bed body 21 and base 22 of the treatment bed inside it. The shielding chamber 3 forms a closed body by being coupled with the shielding layer 14 (coupling means direct connection or indirect connection), which shields the radiation rays scattered from the radiotherapy equipment.

[0055] This application embodiment forms a closed shielding chamber by combining a shielding chamber and a shielding layer, thus creating a self-shielding environment for the radiotherapy equipment. This eliminates the need for a dedicated machine room, and the self-shielded radiotherapy equipment can be placed in any location, expanding the application scenarios of the radiotherapy equipment.

[0056] In this embodiment, the shielding chamber 3 is detachably coupled to the shielding layer 14, or the shielding chamber 3 and the shielding layer 14 are integrally formed. That is, the shielding chamber 3 can be separated from the radiation source device 1 and installed as an accessory of the radiotherapy equipment according to the user's needs; or, the shielding chamber 3 can be integrally formed with the radiation source device 1 and serve as an inherent component of the radiotherapy equipment.

[0057] In this embodiment of the application, the shielding chamber is coupled to the shielding layer through an adapter structure.

[0058] like Figure 7 As shown, the shielding compartment 3 is adapted to the shielding layer 14 via a non-straight splicing interface F. The adaptation structure is a non-straight splicing interface F, as shown... Figure 7 As shown, the non-straight-face splicing interface F can be a stepped surface, or a curved surface, S-shaped surface, V-shaped surface, etc. This application embodiment is not limited to the above-mentioned non-straight-face splicing interface; other non-straight-face splicing interfaces can also be used. The non-straight-face splicing interfaces described in this application embodiment can use the same interface form to achieve adaptation connection, or they can use different interface methods to achieve adaptation connection. This application embodiment uses a non-straight-face splicing interface to achieve the connection between the shielding chamber and the shielding layer, so as to ensure that no radiation leakage occurs from the interface between the shielding chamber and the shielding layer.

[0059] In this embodiment, the shielding chamber is connected to the shielding layer via an intermediate connector to achieve coupling. The intermediate connector serves as a bridge between the shielding chamber and the shielding layer, enabling their connection.

[0060] like Figure 8As shown, the intermediate connector 4 is adapted to the shielding chamber 3 via an adapter structure; or, the intermediate connector 4 is adapted to the shielding layer 14 via an adapter structure; or, the intermediate connector 4 is adapted to both the shielding chamber 3 and the shielding layer 14 via an adapter structure. In this embodiment, the intermediate connector 4 is used to connect the shielding chamber 3 and the shielding layer 14, overcoming the mismatch between the shielding chamber 3 and the shielding layer 14 and improving the versatility of the shielding chamber. The adapter structure is a non-straight-face splicing interface F, such as... Figure 9 As shown, the non-straight-surface splicing interface F is an S-surface, but it can also be a curved surface, a stepped surface, a V-shaped surface, etc. The embodiments of this application are not limited to the above-mentioned non-straight-surface splicing interface; other non-straight-surface splicing interfaces can also be used, as long as no rays are leaked at the interface. The non-straight-surface splicing interfaces described in the embodiments of this application can use the same interface form to achieve adaptation and connection, or they can use different interface methods to achieve adaptation and connection.

[0061] In one embodiment of this application, as Figure 10 As shown, the shielding compartment 3 includes multiple shielding shell segments 3'. This embodiment of the application allows the shielding compartment 3 to be composed of multiple shielding shell segments 3', making the transportation of the shielding compartment 3 more convenient.

[0062] In this embodiment, the plurality of shielding shell segments 3' are detachably assembled to form the shielding chamber 3. This embodiment achieves the assembly of the plurality of shielding shell segments 3' through a detachable assembly method, making the installation of the shielding chamber 3 simpler and its application more diverse and flexible.

[0063] Simultaneously, multiple detachable and interlocking shielding shell segments 3' are used to form a shielding chamber 3, the shape and space occupied by which the shielding chamber can be adjusted according to the installation location and the treatment needs of the radiotherapy equipment. See also Figures 11a-11b In this embodiment of the application, changing the shape of the shielding chamber 3 can be achieved simply by increasing or decreasing the number of the shielding shell segments 3'. See also... Figures 11c-11d In this embodiment of the application, if it is necessary to expand or reduce the space occupied by the shielding compartment 3, it can be achieved simply by increasing or decreasing the number of the shielding shell segments 3'.

[0064] See Figures 11e-11f In this embodiment of the application, the shape and space occupied by the shielding chamber can also be adjusted by adding or removing shielding shell segments 3' of different sizes or shapes from the original shielding shell segments 3'.

[0065] To prevent radiation from leaking out of the shielding chamber through the gaps between the multiple shielding shell segments, such as Figure 12As shown, the interfaces of the multiple shielding shell segments are non-straight-face splicing interfaces F.

[0066] Specifically, see Figure 12 The non-straight-face splicing interface F of the multiple shielding shell segments 3' can be a curved surface, or an S-shaped surface, a stepped surface, a V-shaped surface, etc.

[0067] The interfaces described in the embodiments of this application may be the same or different.

[0068] The embodiments of this application are not limited to the above-mentioned interfaces. Other non-straight-face splicing interfaces can also be used to achieve the same result, as long as it can be ensured that no rays are leaked at the interface.

[0069] The shielding chamber described in this application embodiment is made of metal materials with shielding properties, such as steel, lead, and tungsten.

[0070] In one embodiment of this application, see Figure 13 The shielded chamber has at least one patient entrance 5, which allows patients to enter and exit the shielded chamber 3.

[0071] There may be one or more patient entrances 5, and the patient entrances 5 may be located on the same side or different sides of the shielded chamber 3.

[0072] The embodiments of this application are not limited to having the patient entrance. Patients can also enter the shielded chamber in other ways, such as by entering the shielded chamber before the shielded shell segment is fully assembled, or by entering the shielded chamber through a tunnel at the location where the radiotherapy equipment is installed.

[0073] Specifically, the patient entrance 5 is a first openable and closable shielding door. That is, the patient enters and exits by opening the first openable and closable shielding door, and the radiation is shielded by closing the first openable and closable shielding door.

[0074] The first openable shielding door is located near the treatment bed 2 in the shielding compartment, so as to facilitate the patient to reach the treatment bed as soon as possible.

[0075] The first openable shielding door is located on the side or rear end of the treatment bed 2. The first openable shielding door on the side of the treatment bed 2 facilitates patient access to and from the treatment bed. The first openable shielding door at the rear end of the treatment bed 2 facilitates emergency manual pulling of the treatment bed, allowing it to quickly pass through the first openable shielding door and be pulled out of the shielding compartment.

[0076] In order to enable the opening and closing operation of the first openable shielding door, the first openable shielding door is opened electrically and / or manually.

[0077] The opening and closing operation of the first openable shielding door can also be achieved by a combination of electric and manual methods in the embodiments of this application.

[0078] For example, the first openable shielding door is operated electrically. In case of malfunction or emergency operation of the radiotherapy equipment, the first openable shielding door is operated manually.

[0079] Specifically, the first openable shielding door is one of a sliding door, a roller shutter door, or a side-opening door.

[0080] When there are multiple first openable shielding doors, they can be different doors or the same door.

[0081] In this embodiment of the application, the first openable shielding door can be selected in terms of door form and opening / closing direction according to the location where the radiotherapy equipment is installed and the usage status of the radiotherapy equipment.

[0082] If the radiotherapy equipment is installed close to a wall, a roller shutter or sliding door is selected as the first openable shielding door.

[0083] If the internal space of the shielding chamber where the radiotherapy equipment is installed is limited, a roller shutter door or a sliding door can be selected as the first openable shielding door, or an outward-opening side door can be selected.

[0084] The first openable shielding door is a sliding door. The manual opening method is achieved by manually operating the guide or rolling structure (i.e., manually pushing or pulling the first openable shielding door with the help of the guide or roller structure to realize the opening and closing of the first openable shielding door) or by hand-cranking (i.e., driving the transmission system of the first openable shielding door by hand-cranking to further drive the first openable shielding door to realize its opening and closing).

[0085] To achieve better opening and closing operation, reduce friction, and increase the smoothness of opening and closing, the guide or rolling structure is a suspended roller structure.

[0086] See Figure 14a , 14b The suspension roller structure includes a first top roller 51 at the top of the shielding door 5' and a first bottom slide rail 52 at the bottom of the shielding door 5'. The first top roller 51 is located in a first groove 33 in the shielding chamber 3, and the first bottom slide rail 52 is located in a second groove 34 in the shielding chamber 3 or the ground. The shielding door 5' opens and closes by moving left and right relative to the shielding chamber 3 through the first top roller 51 and the first bottom slide rail 52.

[0087] In this embodiment, the opening or closing of the first openable shielding door is achieved through the first top roller 51 and the first bottom slide rail 52 at the bottom of the shielding door 5'. This enables smooth opening and closing of the first openable shielding door, and the suspended roller structure is simple to maintain and easy to use.

[0088] See Figure 14b The hand-cranked driving method involves performing a hand-cranked operation via a first hand crank 53 coupled (directly or indirectly connected) to the first openable and closable shielding door, and sending the driving force generated by the hand-cranked operation to the first openable and closable shielding door to control the opening and closing of the first openable and closable shielding door.

[0089] In this embodiment, the opening and closing speed of the first openable shielding door can be controlled by the force and speed of hand cranking. When the first openable shielding door or the radiotherapy equipment malfunctions and emergency operation is required, the opening or closing of the first openable shielding door can be quickly achieved by hand cranking.

[0090] The installation position of the first hand crank 53 is not limited in this embodiment, as long as the driving force generated by the hand crank operation can be sent to the first openable shielding door to control its opening and closing.

[0091] The interface between the first openable shielding door and the shielding compartment is a non-straight-face splicing interface.

[0092] To prevent radiation from leaking through the gap between the first openable shielding door and the shielding chamber, the interface between the first openable shielding door and the shielding chamber is a non-straight-face splicing interface. Specifically, the interface between the first openable shielding door and the shielding chamber is one of a curved surface, an S-shaped surface, a stepped surface, or a V-shaped surface.

[0093] The interfaces described in the embodiments of this application can be the same or different. The embodiments of this application are not limited to the interfaces described above; other non-linear splicing interfaces can also be used, as long as it ensures that no rays are leaked at the interface.

[0094] In one embodiment of this application, see Figure 15 The shielded chamber 3 has at least one operating port 6, which allows the operator to enter and exit the shielded chamber.

[0095] The operation port 6 described in this application embodiment can coexist with the patient entrance 5 in the shielded chamber 3. Alternatively, this application embodiment may only have the patient entrance 5 or only have the operation port 6.

[0096] The operating port 6 is a second openable shielding door.

[0097] That is, the operator can enter and exit by opening the second openable shielding door, and the radiation can be shielded by closing the second openable shielding door.

[0098] In this embodiment of the application, the second openable shielding door is located near the radiation source, so that the operator can enter the shielding chamber to open, close or maintain the radiation source.

[0099] In order to enable the opening and closing operation of the second openable shielding door, the second openable shielding door is opened electrically and / or manually.

[0100] The second openable shielding door can also be opened and closed using a combination of electric and manual methods in the embodiments of this application.

[0101] For example, the second openable shielding door is operated electrically. In case of malfunction or emergency operation of the radiotherapy equipment, the second openable shielding door is operated manually.

[0102] Specifically, the second openable shielding door is one of a sliding door, a roller shutter door, or a side-opening door.

[0103] When there are multiple second openable shielding doors, they can be different doors or the same door.

[0104] In this embodiment of the application, the second openable shielding door can be selected in terms of door form and opening / closing direction according to the location where the radiotherapy equipment is installed and the usage status of the radiotherapy equipment.

[0105] For example, if the radiotherapy equipment needs to be installed close to a wall, a roller shutter or sliding door can be selected as the second openable shielding door.

[0106] For example, if the internal space of the shielding chamber where the radiotherapy equipment is installed is limited, a roller shutter door or a sliding door can be selected as the second openable shielding door, or an outward-opening side door can be selected.

[0107] Specifically, the second openable shielding door is a sliding door, and the manual opening method is achieved by manually operating the guide or rolling structure (i.e., by manually pushing or pulling the second openable shielding door with the help of the guide or roller structure to realize the opening and closing of the second openable shielding door) or by hand-cranking (i.e., by driving the transmission system of the second openable shielding door by hand-cranking, further driving the second openable shielding door to realize its opening and closing).

[0108] To achieve better opening and closing operation, reduce friction, and increase the smoothness of opening and closing, the guide or rolling structure is a suspended roller structure.

[0109] Similar to the first openable shielding door, the second openable shielding door adopts a suspension roller structure including a second top roller at the top of the second openable shielding door and a second bottom slide rail at the bottom of the second openable shielding door. The second top roller is located in a third groove in the shielding chamber, and the second bottom slide rail is located in a fourth groove in the shielding chamber or the ground. The second openable shielding door opens and closes by moving left and right relative to the shielding chamber through the second top roller and the second bottom slide rail.

[0110] The embodiments of this application realize the opening or closing of the second openable shielding door through the second top roller and the second bottom slide rail at the bottom of the shielding door, which can realize the smooth opening and closing of the second openable shielding door. Moreover, this suspended roller structure is simple to maintain and convenient to use.

[0111] The hand-cranked driving method involves manually cranking a second hand crank that is coupled (directly or indirectly connected) to the second openable and closable shielding door, and sending the driving force generated by the hand cranking operation to the second openable and closable shielding door to control its opening and closing.

[0112] In this embodiment, the opening and closing speed of the second openable shielding door can be controlled by the force and speed of hand cranking. When the second openable shielding door malfunctions or the radiotherapy equipment malfunctions, and emergency operation is required to open or close the second openable shielding door, the opening and closing operation of the second openable shielding door can be quickly achieved by hand cranking.

[0113] The installation position of the second hand crank is not limited in this application embodiment, as long as it can send the driving force generated by the hand crank operation to the second openable shielding door to control its opening and closing.

[0114] The interface between the second openable shielding door and the shielding compartment is a non-straight-face splicing interface.

[0115] To prevent radiation from leaking through the gap between the second openable shielding door and the shielding chamber, the interface between the second openable shielding door and the shielding chamber is a non-straight-face splicing interface. Specifically, the interface between the second openable shielding door and the shielding chamber is one of a curved surface, an S-shaped surface, a stepped surface, or a V-shaped surface.

[0116] The interfaces described in the embodiments of this application can be the same or different. The embodiments of this application are not limited to the interfaces described above; other non-linear splicing interfaces can also be used, as long as it ensures that no rays are leaked at the interface.

[0117] In one embodiment of this application, in order to further prevent leakage of radiation rays when the first or second openable shielding door is open, such as Figure 16 As shown, the first openable shielding door and / or the second openable shielding door have an isolation chamber 7, which isolates leaked rays when the first openable shielding door or the second openable shielding door is opened.

[0118] In this embodiment of the application, the isolation chamber 7 isolates the radiation rays that leak out when the first or second openable shielding door is opened, thereby achieving a better radiation shielding effect.

[0119] Specifically, the isolation compartment 7 can be configured for any first and second openable shielding door, such as a sliding door, a roller shutter door, or a side-opening door. The isolation compartment 7 can be configured corresponding to the first and / or the second openable shielding door, that is, a separate isolation compartment 7 can be configured for each of the first and second openable shielding doors, or a single isolation compartment 7 can be configured for both the first and second openable shielding doors.

[0120] like Figure 16 As shown, the isolation chamber 7 is located outside the first and second openable shielding doors in the shielding chamber 3, which facilitates shielding the leaking rays when the first or second openable shielding door is opened. However, the isolation chamber 7 is not limited to being located outside the first and second openable shielding doors, and can also be located in other positions, such as inside the first and second openable shielding doors.

[0121] See Figure 16 The isolation chamber 7 includes a hollow cavity 71 disposed outside the first and second openable shielding doors. Before the first or second openable shielding door is opened, the operator enters the hollow cavity 71 to wait for the first or second openable shielding door to open. When the first or second openable shielding door is opened, the operator quickly enters the shielding chamber 3. When the first or second openable shielding door is opened, the radiation rays leaking through the opening of the first or second openable shielding door are shielded by the walls of the isolation chamber 7.

[0122] The hollow cavity 71 described in this application embodiment can be a closed cavity or a non-closed cavity.

[0123] like Figure 17As shown, in order to further isolate the leaking rays when the first or second openable shielding door is opened, the isolation chamber 7 also includes an outer door 72 for entering the hollow cavity 71.

[0124] The outer door 72 can be one of a sliding door, a roller shutter door, or a side-opening door. There can be one or more outer doors, or multiple different doors, as long as they can isolate the leaking rays when the first and second openable shielding doors are opened.

[0125] To enable the opening and closing of the outer door, the outer door can be opened electrically or manually.

[0126] The outer door can also be opened and closed using a combination of electric and manual methods in this embodiment.

[0127] For example, the outer door is opened and closed electrically. In case of malfunction or emergency operation of the radiotherapy equipment, the outer door is opened and closed manually.

[0128] See Figure 18 In one embodiment of this application, the first openable shielding door and / or the second openable shielding door are revolving doors, and the revolving door has an isolation chamber 7. The first openable shielding door and / or the second openable shielding door achieve shielding of leaky rays when the operator enters the shielding chamber 3 through the isolation chamber 7 in the revolving door.

[0129] The revolving door can be opened electrically or manually.

[0130] The embodiments of this application can also use a combination of electric and manual methods to realize the opening and closing operation of the revolving door.

[0131] For example, the rotating door is operated electrically to open and close. In case of malfunction or emergency operation of the radiotherapy equipment, the rotating door can be opened manually.

[0132] See Figure 18 The hand-cranked drive method involves manually cranking a third hand crank 73 that is coupled (directly or indirectly connected) to the revolving door, and sending the driving force generated by the hand-cranked operation to the revolving door to control the opening and closing of the revolving door.

[0133] In this embodiment, the opening and closing speed of the revolving door can be controlled by the force and speed of hand cranking. When the revolving door or the radiotherapy equipment malfunctions and an emergency operation is required to open or close the revolving door, the opening and closing operation of the revolving door can be quickly achieved by hand cranking.

[0134] The installation position of the third hand crank 73 is not limited in this application embodiment, as long as it can send the driving force generated by the hand crank operation to the revolving door to control its opening and closing.

[0135] The interface between the revolving door and the shielded compartment is a non-straight-face splicing interface.

[0136] To prevent radiation from leaking through the gap between the rotating door and the shielding chamber, the interface between the rotating door and the shielding chamber is a non-straight-face splicing interface. Specifically, the interface between the rotating door and the shielding chamber is one of a curved surface, an S-shaped surface, a stepped surface, or a V-shaped surface.

[0137] The interfaces described in the embodiments of this application can be the same or different. The embodiments of this application are not limited to the interfaces described above; other non-linear splicing interfaces can also be used, as long as no rays are leaked at the interface.

[0138] In one embodiment of this application, a display and / or playback device is provided inside the shielding chamber and / or the radiation source device, and the display and / or playback device plays content data according to patient preferences or user instructions.

[0139] Specifically, the patient preferences can be obtained based on patient information or selected by the patient according to user instructions, and the content data includes at least one of video content data, image content data, and audio content data. The content data played within the shielded chamber or the radiation source device can provide patients with a better viewing experience during treatment, thereby alleviating their claustrophobia.

[0140] See Figure 19 In one embodiment of this application, a fresh air system is provided inside the shielded chamber 3.

[0141] The air outlet of the fresh air system is located on the side wall of the shielded chamber near the ground, and the air inlet is located on the side wall of the shielded chamber near the top or the top of the shielded chamber.

[0142] Specifically, the air outlet passes through the side wall at a preset angle, and the air inlet passes through the side wall or top of the shielding chamber at a preset angle. The preset angle is at an angle to the direction of radiation, thereby preventing the radiation from leaking out along the air outlet and / or air inlet. For example, the preset angle is 45 degrees to the horizontal direction.

[0143] A protective wall may also be installed outside the air outlet and / or air inlet to block possible radiation leakage. The air inlet is located away from the air outlet. The distance between the air inlet and the air outlet allows air to flow within the shielded chamber, thereby achieving fresh air exchange.

[0144] Specifically, the air inlet and the air outlet are arranged diagonally. The greater the distance between the air inlet and the air outlet, the more fully the air flows in the shielded chamber, and the better the fresh air exchange effect is achieved.

[0145] In one embodiment of this application, the radiation source 121 mounted on the source carrier 12 of the radiation source device 1 is an X-ray source or a gamma-ray source. For example, a medical electron accelerator is used to emit X-rays; a cobalt-60 source is used to emit gamma rays.

[0146] In this embodiment of the application, the source carrier 12 of the source device 1 is equipped with a plurality of radiation sources 121, and the rays emitted by the plurality of radiation sources 121 are focused at a point O, which is called the focal point. Typically, the focal point is located on the central axis of the source device 1.

[0147] In the embodiments of this application, such as Figure 20 As shown, the plurality of radioactive sources 121 includes a plurality of radioactive source groups 1211, such as... Figure 20 As shown, the plurality of radiation sources 121 includes six radiation source groups 1211, which are evenly distributed on the entire circumferential surface of the source carrier 12 of the radiation source device. The radiation sources 121 in each radiation source group 1211 are distributed in different latitudinal regions of the source carrier 12 of the radiation source device, thereby enabling focused irradiation of the patient from different directions.

[0148] In the embodiments of this application, such as Figure 21 As shown, the plurality of radiation sources 121 include a plurality of radiation source groups 1211, which are centrally located in a region Q of the circumferential surface of the source carrier 12 of the radiation source device. The radiation sources 121 in each radiation source group 1211 are distributed in different latitude regions of the source carrier 12 of the radiation source device, thereby enabling focused irradiation of the patient from different directions.

[0149] In this embodiment, the radiation source device rotates around its central axis l. This embodiment achieves continuous high-dose irradiation at the lesion site using a small amount of radiation source, while surrounding normal tissue receives only a small amount of radiation, minimizing the damage caused by radiotherapy.

[0150] In one embodiment of this application, an imaging system is provided within the shielding chamber and / or the radiation source device. The imaging system includes an X-ray generator and a detector arranged opposite each other. The X-rays emitted by the X-ray generator pass through the patient's body and are received by the detector to image lesions and / or organs within the patient's body.

[0151] The imaging system can be installed inside the shielding chamber, inside the radiation source device, or both inside the shielding chamber and the radiation source device. The radiotherapy equipment of this application embodiment can install one or more of the above-mentioned imaging systems. This application embodiment does not limit the number of imaging systems installed in the radiotherapy equipment.

[0152] In one embodiment of this application, the radiotherapy device further includes an optical monitoring system, which can be used to monitor the movement of a patient located on the treatment bed. The optical monitoring system can be an infrared monitoring system.

[0153] The optical monitoring system may include a radiation generator, a radiation receiver, and a marker. In use, the marker is attached to the patient's body surface. The radiation emitted by the radiation generator is reflected by the marker and received by the radiation receiver. The patient's movement is determined by the time the reflected radiation is received.

[0154] The optical monitoring system may also include a radiation receiver and a marker. In use, the marker is attached to the patient's body surface and emits radiation autonomously, which is received by the radiation receiver. The patient's movement is determined by the time the radiation is received.

[0155] The optical monitoring system may also include a radiation emitter and a radiation receiver. In use, the radiation emitted by the radiation generator is reflected by the patient's skin and received by the radiation receiver. The patient's movement is determined by the time the reflected radiation is received.

[0156] The optical monitoring system may also include only a radiation receiver. In use, natural light reflected from the patient's skin is received by the radiation receiver, and the patient's movement is determined by the time the reflected radiation is received.

[0157] The optical monitoring system is installed on the treatment bed, such as Figure 22 As shown, the optical monitoring system 8 is located at the foot of the treatment bed 2. The optical monitoring system can also be located in other positions on the radiotherapy equipment, for example, above the treatment bed and suspended from the top of the shielding chamber.

[0158] In this application, the shielding chamber can be directly fixedly connected to the ground or fixedly connected to the base of the radiotherapy equipment.

[0159] In this application, the shielding chamber can be fixedly connected to the ground or the base of the radiotherapy equipment by anchor bolts, the shielding chamber can be fixedly connected to the shielding layer by bolts, and the shielding shell segments of the shielding chamber can be fixedly connected by bolts. Of course, other fixed connection methods can also be used, such as welding, bonding, screw and nut connection, etc. This application does not limit the fixed connection method of the above structure.

[0160] A1. A radiotherapy device, characterized in that the radiotherapy device includes a radiation source device, a treatment bed, and a shielding chamber, wherein a treatment cavity is formed within the radiation source device, one end of the radiation source device has an opening for the treatment bed to enter and exit the treatment cavity, the end of the treatment cavity opposite to the opening is closed, and the shielding chamber is disposed on the periphery of the radiotherapy device to shield the radiation generated by the radiotherapy device.

[0161] A2. The radiotherapy device according to claim A1, characterized in that the shielding chamber is disposed around the radiation source device and the treatment bed to form a closed body, thereby shielding the radiation generated by the radiotherapy device.

[0162] A3. The radiotherapy device according to claim A1, characterized in that the radiation source device includes a shielding layer, the shielding chamber is disposed around the treatment bed, the shielding layer and the shielding chamber are coupled to form a closed body to shield the radiation generated by the radiotherapy device.

[0163] A4. The radiotherapy device according to claim A3, wherein the shielding chamber is detachably coupled to the shielding layer, or the shielding chamber and the shielding layer are integrally formed.

[0164] A5. The radiotherapy device according to claim A3, wherein the shielding chamber is adapted to the shielding layer via an adapter structure.

[0165] A6. The radiotherapy device according to claim A3, wherein the shielding chamber is connected to the shielding layer via an intermediate connector.

[0166] A7. The radiotherapy device according to claim A6, wherein the intermediate connection structure is adapted to the shielding chamber and / or the shielding layer through an adapter structure.

[0167] A8. The radiotherapy device according to claim A5 or A7, wherein the adapter structure is a non-straight-face splicing interface.

[0168] A9. The radiotherapy device according to claim A1, wherein the shielding chamber comprises a plurality of shielding shell segments.

[0169] A10. The radiotherapy device according to claim A9, wherein the plurality of shielding shell segments can be disassembled and spliced ​​to form a shielding chamber.

[0170] A11. The radiotherapy device according to claim A10, wherein the interface of the plurality of shielding shell segments is a non-straight-face splicing interface.

[0171] A12. The radiotherapy device according to claim A1, wherein the shielding chamber has at least one patient entrance for patients to enter and exit the shielding chamber.

[0172] A13. The radiotherapy device according to claim A12, wherein the patient entrance is a first openable and closable shielded door.

[0173] A14. The radiotherapy device according to claim A13, wherein the first openable shielding door is disposed in the shielding chamber near the treatment bed.

[0174] A15. The radiotherapy device according to claim A13, characterized in that the first openable shielding door has an isolation chamber for isolating radiation leaking out when the first openable shielding door is opened.

[0175] A16. The radiotherapy device according to claim A1, wherein the shielding chamber has at least one operating port for an operator to enter and exit the shielding chamber.

[0176] A17. The radiotherapy device according to claim A16, wherein the operating port is a second openable and closable shielded door.

[0177] A18. The radiotherapy device according to claim A17, wherein the second openable shielding door is disposed in the shielding chamber near the radiation source device.

[0178] A19. The radiotherapy device according to claim A18, wherein the second openable shielding door has an isolation chamber for isolating radiation leaking out when the second openable shielding door is opened.

[0179] A20. The radiotherapy device according to claim A13 or A17, characterized in that the interface between the openable shielding door and the shielding chamber is a non-straight-face splicing interface.

[0180] A21. The radiotherapy device according to claim A2, characterized in that the source device includes a shielding layer, the shielding chamber has at least one entrance, the entrance being a third openable shielding door, the third openable shielding door being disposed in the shielding chamber directly opposite the source device shielding layer, and the opening size of the third openable shielding door being smaller than the size of the source device shielding layer in the axial direction of the source device.

[0181] A22. The radiotherapy device according to claim A1, characterized in that a display and / or playback device is provided inside the shielding chamber and / or the treatment cavity, and the display and / or playback device plays content data according to patient preferences or user instructions.

[0182] A23. The radiotherapy equipment according to claim A1, characterized in that a fresh air system is provided inside the shielding chamber.

[0183] A24. The radiotherapy device according to claim A1, wherein the radiation source device is configured to carry a radiation source, wherein the radiation source is an X-ray source or a gamma-ray source.

[0184] A25. The radiotherapy device according to claim A24, characterized in that the radiation source device is configured to carry a plurality of radiation sources, the radiation emitted by the plurality of radiation sources being focused at a single point.

[0185] A26. The radiotherapy device according to claim A24 or A25, characterized in that the source device rotates about the central axis of the source device.

[0186] A27. The radiotherapy device according to claim A1, characterized in that an imaging system is provided inside the shielding chamber and / or the radiation source device.

[0187] A28. The radiotherapy device according to claim A1, characterized in that the radiotherapy device further includes an optical monitoring system.

[0188] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A radiotherapy apparatus, characterized in that, The radiation therapy device comprises a source device, a treatment bed and a shielding cabin, the source device has a treatment cavity formed therein, one end of the source device has an opening for the treatment bed to enter and exit the treatment cavity, the end of the treatment cavity opposite to the opening is closed, and the shielding cabin is arranged outside the source device and the treatment bed to form an enclosed body for shielding the radiation generated by the radiation therapy device. The source device comprises a source carrier and a shielding layer, the shielding layer is arranged outside the source carrier and used for wrapping the source carrier, the shielding cabin has at least one entrance, the entrance is a third openable shielding door, the third openable shielding door is arranged at a position of the shielding cabin opposite to the shielding layer of the source device, and an opening size of the third openable shielding door is smaller than a size of the shielding layer of the source device in an axial direction of the source device.

2. The radiation treatment device of claim 1, wherein, The shielding cabin comprises a plurality of shielding shell segments.

3. The radiation treatment device of claim 2, wherein, The plurality of shielding shell segments can be detachably spliced to form the shielding cabin.

4. The radiation treatment device of claim 3, wherein, An interface of the plurality of shielding shell segments is a non-straight surface splicing interface.

5. The radiation treatment device of claim 1, wherein, The shielding cabin has at least one patient entrance for a patient to enter and exit the shielding cabin.

6. The radiotherapy device of claim 5, wherein, The patient entrance is a first openable shielding door.

7. The radiation treatment device of claim 6, wherein, The first openable shielding door is arranged at a position of the shielding cabin close to the treatment bed.

8. The radiation treatment device of claim 6, wherein, The first openable shielding door has an isolation cabin for isolating leaked radiation when the first openable shielding door is opened.

9. The radiation treatment device of claim 1, wherein, The shielding cabin has at least one operation entrance for an operator to enter and exit the shielding cabin.

10. The radiation treatment device of claim 9, wherein, The operation entrance is a second openable shielding door.

11. The radiation treatment device of claim 10, wherein, The second openable shielding door is arranged at a position of the shielding cabin close to the source device.

12. The radiation treatment device of claim 11, wherein, The second openable shielding door has an isolation cabin for isolating leaked radiation when the second openable shielding door is opened.

13. The radiotherapy device of claim 6 or 10, wherein, An interface between the openable shielding door and the shielding cabin is a non-straight surface splicing interface.

14. The radiation treatment device of claim 1, wherein, A display and / or playing device is arranged in the shielding cabin and / or the treatment cavity, the display and / or playing device plays content data according to patient preferences or user instructions.

15. The radiation treatment device of claim 1, wherein, A fresh air system is arranged in the shielding cabin.

16. The radiation treatment device of claim 1, wherein, The source device is configured to carry a radioactive source, and the radioactive source is an X-ray source or a gamma-ray source.

17. The radiation treatment device of claim 16, wherein, The source device is configured to carry a plurality of radioactive sources, and the radioactive sources emit radiation focused on one point.

18. The radiotherapy device of claim 16 or 17, wherein, The source device rotates around a central axis of the source device.

19. The radiation treatment device of claim 1, wherein, An imaging system is arranged in the shielding cabin and / or the source device.

20. The radiotherapy device of claim 1, wherein, The radiation therapy device further comprises an optical monitoring system.

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