Radiation therapy equipment

Abstract

An embodiment of the present application provides a radiotherapy device. The radiotherapy device includes a treatment couch and a shielding chamber. The treatment couch includes a moving couch body and a support base. The shielding chamber is disposed around the moving couch body and the support base to shield the rays generated by the radiotherapy device. By providing a shielding chamber around the treatment couch, the embodiment of the present application at least partially shields the scattered rays generated by the radiotherapy device on the treatment couch side. Therefore, the radiation shielding requirements for a dedicated machine room can be reduced or the dependence of the radiotherapy device on the dedicated machine room can be eliminated.

Description

Technical Field

[0001] This application relates to the field of medical technology, and particularly to a radiotherapy device. Background Art

[0002] With the development of medical technology, rays have become an important means in medical diagnosis and treatment. They emit radiation from a radiation source, and the radiation passes through the human body from different angles to perform diagnosis and treatment on patients. Since ray diagnosis or treatment devices are radioactive, during diagnosis and treatment, the rays can cause harm to the bodies of operators or other personnel. Therefore, how to perform radiation shielding on ray radiation devices has become a technical problem that urgently needs to be solved. 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 shielding device to overcome at least some of the problems existing in the prior art.

[0004] The embodiments of this application provide a radiotherapy device, which includes a treatment couch and a shielding chamber. The treatment couch includes a moving couch body and a support base. The shielding chamber is arranged around the moving couch body and the support base to shield the rays generated by the radiotherapy device.

[0005] As can be seen from the above technical solutions, the radiotherapy device described in the embodiments of this application includes a treatment couch and a shielding chamber. The treatment couch includes a moving couch body and a support base. The shielding chamber is arranged around the moving couch body and the support base to shield the rays generated by the radiotherapy device. By arranging a shielding chamber around the treatment couch, the embodiments of this application can at least partially shield the scattered rays generated by the radiotherapy device on the treatment couch side. Therefore, the radiation shielding requirements for a dedicated machine room can be reduced or the dependence of the radiotherapy device on the dedicated machine room can be eliminated. Brief Description of the Drawings

[0006] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0007] Figure 1 Schematic structural diagram of a radiotherapy device according to Embodiment 1 of this application;

[0008] Figure 2 Schematic diagram of another radiotherapy device according to an embodiment of this application;

[0009] Figure 3Schematic diagram of yet another radiotherapy device according to an embodiment of the present application;

[0010] Figure 4 is Figure 3 top view of;

[0011] Figure 5 Schematic diagram of another radiotherapy device according to an embodiment of the present application;

[0012] Figure 6 Schematic diagram of the structure of a gantry of a radiotherapy device according to an embodiment of the present application;

[0013] Figure 7 Schematic diagram of the structure of another gantry of a radiotherapy device according to an embodiment of the present application;

[0014] Figure 8 Schematic diagram of another radiotherapy device according to an embodiment of the present application;

[0015] Figure 9 Schematic diagram of the coupling of a shielding chamber and a shielding layer through an adaptation structure according to an embodiment of the present application;

[0016] Figure 10 Schematic diagram of the structure of the coupling of a shielding chamber and a shielding layer through an intermediate connector according to an embodiment of the present application;

[0017] Figure 11 Schematic diagram of the structure of an intermediate connector according to an embodiment of the present application;

[0018] Figure 12 Schematic diagram of the structure of a shielding chamber formed by splicing shielding housing segments according to an embodiment of the present application;

[0019] Figures 13a - 13f Schematic diagram of different shielding housing segments spliced to form a shielding chamber according to an embodiment of the present application;

[0020] Figure 14 Schematic diagram of multiple shielding housing segments spliced through an adaptation structure according to an embodiment of the present application;

[0021] Figure 15 Schematic diagram of a patient entrance according to an embodiment of the present application;

[0022] Figures 16a - 16b Schematic diagram of a hanging roller structure according to an embodiment of the present application;

[0023] Figure 17 Schematic diagram of the structure of an operation port according to an embodiment of the present application;

[0024] Figure 18 Schematic diagram of an isolation chamber structure according to an embodiment of the present application;

[0025] Figure 19Schematic diagram of the isolation chamber structure in the embodiment of the present application;

[0026] Figure 20 Schematic diagram of the rotating door structure in the embodiment of the present application;

[0027] Figure 21 Schematic diagram of the fresh air system structure in the embodiment of the present application;

[0028] Figure 22 Schematic diagram of the optical monitoring system installed on the treatment bed in the embodiment of the present application.

[0029] 1. Frame; 11. Treatment cavity; 111. Opening; 112. Closed end; 113. Shielding plug; 12. Source carrier; 121. Radiation source; 13. Collimator; 131. Collimation hole; 14. Shielding layer; 15. Entrance; 2. Treatment bed; 21. Moving bed body; 22. Base; 3. Shielding chamber; 31. First shielding chamber; 32. Second shielding chamber; 33. First groove; 34. Second groove; 4. Intermediate connector; 3'. Shielding housing segment; 5. Patient entrance; 53. First hand crank; 51. First top roller; 52. First bottom slide rail; 6. Operation port; 7. Isolation chamber; 71. Hollow cavity; 72. Outer door; 73. Third hand crank. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the embodiments of the present application.

[0031] Radiation therapy equipment is applied in tumor treatment. Since the radiation therapy equipment kills tumor cells by emitting radiation rays to treat patients. Therefore, it is usually necessary to place the radiation therapy equipment in a dedicated machine room with radiation shielding ability to avoid harm to operators or other personnel caused by radiation rays. However, the construction period and construction cost of the dedicated machine room limit the wide application of radiation therapy equipment.

[0032] The embodiment of the present application provides a radiation therapy equipment, as Figure 1 shown, including:

[0033] A treatment bed 2, the treatment bed 2 includes a moving bed body 21 and a supporting base 22, and the supporting base 22 is used to support the movement of the moving bed body 21;

[0034] The shielding chamber 3 surrounds the moving bed body 21 and the support base 22, is arranged on the periphery of the radiotherapy device, and shields the rays generated by the radiotherapy device.

[0035] In the embodiment of the present application, by arranging a shielding chamber on the periphery of the treatment bed, at least partially shielding the scattered rays generated by the radiotherapy device on the side of the treatment bed, it is possible to reduce the radiation shielding requirements for the dedicated machine room or get rid of the dependence of the radiotherapy device on the dedicated machine room.

[0036] In addition, since the moving bed body and the support base of the treatment bed are both covered in the shielding chamber, the space for patients in the entire shielding chamber is increased, which helps to relieve the claustrophobia symptoms of patients.

[0037] In an embodiment of the present application, the radiotherapy device further includes a gantry 1 configured to carry a radiation source. The shielding chamber 3 surrounds the moving bed body 21, the support base 22 and the gantry 1, is arranged on the periphery of the radiotherapy device, forms a closed body, and shields the rays generated by the radiotherapy device.

[0038] As Figure 2 shown, the shielding chamber 3 is arranged on the periphery of the radiotherapy device, completely covers the gantry 1, the moving bed body 21 and the support base 22 therein, and forms a closed body. The shielding chamber 3 can shield the radiation rays scattered from the front side, left side, rear side and right side of the gantry 1.

[0039] In the embodiment of the present application, by arranging a closed shielding chamber around the radiotherapy device, self-shielding of the radiotherapy device is formed, thus eliminating the need for a dedicated machine room. This self-shielding radiotherapy device can be placed at any position, expanding the application scenarios of the radiotherapy device.

[0040] In addition, since the moving bed body and the support base of the treatment bed are both covered in the shielding chamber, the space for patients in the entire shielding chamber is increased, which helps to relieve the claustrophobia symptoms of patients.

[0041] In the embodiment of the present application, a shielding layer is arranged outside the gantry. The shielding chamber has at least one entrance, and the entrance is a third openable and closable shielding door. The third openable and closable shielding door is arranged at a position of the shielding chamber facing the shielding layer of the gantry, and the opening size of the third openable and closable shielding door is smaller than the size of the shielding layer of the gantry in the axial direction of the gantry.

[0042] As Figure 3 、 4As shown, a shielding layer 14 is provided outside the frame 1. The shielding layer 14 has the same width as the frame 1 in the axial direction of the frame, and is used to shield the radiation rays scattered from the left side, right side, and upper side of the frame 1. The shielding chamber 3 completely encloses the frame 1, the moving couch 21, and the support base 22. The shielding chamber 3 has an entrance 15, which is a third openable and closable shielding door. The third openable and closable shielding door is provided on the side wall of the shielding chamber 3, facing the shielding layer 14 of the frame. The opening size A of the third openable and closable shielding door (i.e., the size of the third openable and closable shielding door along the axial direction of the frame) is smaller than the size B of the shielding layer 14 of the frame in the axial direction of the frame, so that when the third openable and closable shielding door is opened, the radiation rays at the opening are shielded by the shielding layer 14 of the frame, and the radiation rays in the shielding chamber 3 will not leak from the opening of the third openable and closable shielding door.

[0043] The interface between the third openable and closable shielding door and the shielding chamber 3 is a non-straight surface splicing interface to ensure that radiation rays will not leak from the interface between the shielding door and the shielding chamber.

[0044] In an embodiment of the present application, the radiotherapy device further includes a frame, the frame is configured to carry a radiation source, a shielding layer is provided outside the frame, and the shielding chamber is coupled to the shielding layer to form a closed body to shield the rays generated by the radiotherapy device.

[0045] In an embodiment of the present application, the frame is a hollow cylindrical structure with openings at both ends. As Figure 5 shown, the frame 1 is a drum-type frame, and a shielding layer 14 is provided outside the drum-type frame 1. The shielding chamber 3 includes a first shielding chamber 31 and a second shielding chamber 32. The first shielding chamber 31 and the second shielding chamber 32 are located on both sides of the frame 1 along the axial direction. The first shielding chamber 31 and the second shielding chamber 32 are respectively coupled to the shielding layer 14 (coupling means direct connection or indirect connection) to form a closed body to shield the rays generated by the radiotherapy device. Among them, the first shielding chamber 31 is used to cover the treatment couch 2, and the second shielding chamber 32 is used to block the radiation scattering at the rear side of the frame 1.

[0046] In the embodiment of the present application, the shapes of the first shielding chamber and the second shielding chamber are not limited.

[0047] In the embodiment of the present application, through the combination of the first shielding chamber 31, the second shielding chamber 32, and the shielding layer 14, a closed shielding chamber is formed to form self-shielding for the radiotherapy device, thus eliminating the need for a dedicated machine room. This self-shielding radiotherapy device can be placed at any position, expanding the application scenarios of the radiotherapy device.

[0048] In an embodiment of the present application, a treatment cavity is formed inside the frame. One end of the frame has an opening of the treatment cavity for the treatment couch to enter and exit, and the end of the treatment cavity opposite to the opening is closed.

[0049] As Figure 6 shown, the frame 1 in the embodiment of the present application 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 arranged inside the source carrier 12. The inner cavity of the collimator 13 forms the treatment cavity 11 inside the frame 1. The treatment cavity 11 is used to accommodate a patient. A radiation source 121 is arranged on the source carrier 12, and a collimation hole 131 corresponding to the radiation source 121 is provided on the collimator 13. The rays emitted by the radiation source 121 pass through the collimation hole 131 and are focused on 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 couch 2 to enter and exit the treatment cavity 11, forming the opening 111 of the treatment cavity 11. The closed ends 112 of the hemispherical source carrier 12 and the collimator 13 constitute the closed end 112 of the treatment cavity 11.

[0050] As Figure 7 shown, the frame 1 in the embodiment of the present application includes a source carrier 12 and a collimator 13. Both the source carrier 12 and the collimator 13 are hollow cylindrical structures (for example: a conical cylinder). The collimator 13 is arranged inside the source carrier 12. The inner cavity of the collimator 13 forms the treatment cavity 11 inside the frame 1. The treatment cavity 11 is used to accommodate a patient. A radiation source 121 is arranged on the source carrier 12, and a collimation hole 131 corresponding to the radiation source 121 is provided on the collimator 13. The rays emitted by the radiation source 121 pass through the collimation hole 131 and are 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 couch 2 to enter and exit the treatment cavity 11, forming the opening 111 of the treatment cavity 11. The other end of the hollow cylindrical source carrier 12 and the collimator 13 is blocked by a shielding plug 113 to constitute the closed end 112 of the treatment cavity 11.

[0051] As Figure 8 shown, a shielding layer 14 is arranged outside the source carrier 12 of the frame 1 in the embodiment of the present application, for surrounding the source carrier 12, thereby shielding the radiation rays scattered from the left, right, rear, and upper sides of the source carrier 12. The shielding chamber 3 is arranged around the treatment couch 2, covering the moving bed body 21 and the support base 22 of the treatment couch 2 therein. The shielding chamber 3 is coupled to the shielding layer 14 (coupling means direct connection or indirect connection) to shield the radiation rays scattered from the radiotherapy device.

[0052] In the embodiment of the present application, a combined shielding bin and shielding layer form a closed shielding bin, achieving self-shielding for the radiotherapy equipment, thereby eliminating the need for a dedicated machine room. This self-shielding radiotherapy equipment can be placed anywhere, expanding the application scenarios of the radiotherapy equipment.

[0053] In the embodiment of the present application, the shielding bin 3 is detachably coupled to the shielding layer 14, or the shielding bin 3 and the shielding layer 14 are integrally formed. That is, the shielding bin 3 can be separated from the rack 1 and installed as an accessory of the radiotherapy equipment according to the needs of the user; or, the shielding bin 3 can be integrally formed with the rack 1 as an inherent component of the radiotherapy equipment.

[0054] In the embodiment of the present application, the shielding bin is adaptively connected to the shielding layer through an adaptation structure to achieve coupling.

[0055] As Figure 9 shown, the shielding bin 3 is adaptively connected to the shielding layer 14 through a non-straight surface splicing interface F, and the adaptation structure is the non-straight surface splicing interface F. As Figure 9 shown, the non-straight surface splicing interface F can be a stepped surface, or a curved surface, an S surface, a V-shaped surface, etc. The embodiment of the present application is not limited to the above non-straight surface splicing interface, and other non-straight surface splicing interfaces can also be used to achieve it. The non-straight surface splicing interface described in the embodiment of the present application can achieve adaptive connection by using the same interface form, or can also achieve adaptive connection by using different interface methods. The embodiment of the present application realizes the connection between the shielding bin and the shielding layer through the non-straight surface splicing interface to ensure that no ray leakage occurs at the interface between the shielding bin and the shielding layer.

[0056] In the embodiment of the present application, the shielding bin is connected to the shielding layer through an intermediate connector to achieve coupling. Among them, the intermediate connector serves as a bridging component connecting the shielding bin and the shielding layer, and the connection between the shielding bin and the shielding layer is realized through the intermediate connector.

[0057] As Figure 10 shown, the intermediate connector 4 is adaptively connected to the shielding bin 3 through an adaptation structure; or, the intermediate connector 4 is adaptively connected to the shielding layer 14 through an adaptation structure; or, the intermediate connector 4 is adaptively connected to both the shielding bin 3 and the shielding layer 14 through an adaptation structure. In the embodiment of the present application, the connection between the shielding bin 3 and the shielding layer 14 is realized by using the intermediate connector 4 to overcome the mismatch between the shielding bin 3 and the shielding layer 14 and improve the versatility of the shielding bin. Among them, the adaptation structure is the non-straight surface splicing interface F, as Figure 11As shown, the non-planar splicing interface F is an S surface, and can also be a curved surface, a stepped surface, a V-shaped surface, etc. The embodiments of the present application are not limited to the above non-planar splicing interfaces, and other non-planar splicing interfaces can also be used as long as the leakage of rays at the interface can be ensured. The non-planar splicing interfaces in the embodiments of the present application can be adapted and connected by using the same interface form, or can be adapted and connected by using different interface methods.

[0058] In an embodiment of the present application, as Figure 12 shown, the shielding chamber 3 includes a plurality of shielding housing segments 3'. In the embodiments of the present application, the shielding chamber 3 can be formed by a plurality of shielding housing segments 3', making the transportation of the shielding chamber 3 more convenient.

[0059] In the embodiments of the present application, the plurality of shielding housing segments 3' are detachably spliced to form the shielding chamber 3. In the embodiments of the present application, the assembly of the plurality of shielding housing segments 3' is realized by a detachable splicing method, making the installation of the shielding chamber 3 simpler and the use places more diverse and flexible.

[0060] At the same time, by using a plurality of detachable and spliced shielding housing segments 3' to form the shielding chamber 3, the shape and occupied space of the shielding chamber can be adjusted according to the installation place and the treatment requirements of the radiotherapy equipment. Refer to Figure 13a - Figure 13b , in the embodiments of the present application, if it is necessary to change the shape of the shielding chamber 3, it can be realized only by increasing or decreasing the number of the shielding housing segments 3'. Refer to Figure 13c - Figure 13d , in the embodiments of the present application, if it is necessary to expand or reduce the occupied space of the shielding chamber 3, it can be realized only by increasing or decreasing the number of the shielding housing segments 3'.

[0061] Refer to Figure 13e - Figure 13f , in the embodiments of the present application, the shape and occupied space of the shielding chamber can also be adjusted by increasing or decreasing the shielding housing segments 3' with different sizes or shapes from the original shielding housing segments 3'.

[0062] In order to prevent the rays in the shielding chamber from leaking through the gaps between the plurality of shielding housing segments, the interfaces of the plurality of shielding housing segments are non-planar splicing interfaces.

[0063] Specifically, refer to Figure 14 , the non-planar splicing interface F of the plurality of shielding housing segments 3' can be a curved surface, and can also be an S surface, a stepped surface, a V-shaped surface, etc.

[0064] The interfaces in the embodiments of the present application can use the same interfaces, or can use different interfaces.

[0065] The embodiments of the present application are not limited to the above interfaces, and other non-direct splicing interfaces can also be used as long as the interface can ensure no ray leakage.

[0066] The shielding chamber in the embodiments of the present application is made of metal materials with shielding effects such as steel, lead, and tungsten.

[0067] In an embodiment of the present application, refer to Figure 15 , the shielding chamber has at least one patient entrance 5, and the patient entrance 5 is for patients to enter and exit the shielding chamber 3.

[0068] The patient entrance 5 can be one or more, and the patient entrance 5 can be arranged on the same side or different sides of the shielding chamber 3.

[0069] The embodiments of the present application are not limited to necessarily having the patient entrance. Patients can also enter the shielding chamber in other ways, such as entering the shielding chamber when the shielding shell segments have not been completely spliced, or entering the shielding chamber through a tunnel at the installation position of the radiotherapy device, etc.

[0070] Specifically, the patient entrance 5 is a first openable and closable shielding door. That is, the opening of the first openable and closable shielding door enables patients to enter and exit, and the closing of the first openable and closable shielding door realizes the shielding of rays.

[0071] The first openable and closable shielding door is arranged at a position of the shielding chamber close to the treatment bed 2, so as to facilitate patients to reach the treatment bed as soon as possible.

[0072] The first openable and closable shielding door is arranged on the side or the tail end of the treatment bed 2. The first openable and closable shielding door arranged on the side of the treatment bed 2 facilitates patients to get on and off the treatment bed. The first openable and closable shielding door arranged at the tail end of the treatment bed 2 facilitates the emergency manual pulling of the treatment bed, so that the treatment bed can quickly pass through the first openable and closable shielding door and be dragged out of the shielding chamber.

[0073] In order to realize the opening and closing operation of the first openable and closable shielding door, the first openable and closable shielding door is opened in an electric manner and / or in a manual manner.

[0074] The embodiments of the present application can also adopt a combination of electric and manual methods to realize the opening and closing operation of the first openable and closable shielding door.

[0075] For example, the first openable and closable shielding door adopts an electric manner to realize the opening and closing operation. When a failure occurs or the radiotherapy device needs to perform an emergency operation, the first openable and closable shielding door is opened in a manual manner.

[0076] Specifically, the first openable and closable shielding door is one of a sliding door, a rolling shutter door, and a side-opening door.

[0077] When there are multiple first openable and closable shielding doors, they can be of different types or the same type.

[0078] In the embodiment of the present application, the first openable and closable shielding door can select the form of the door and the opening and closing direction of the door according to the place where the radiotherapy device is installed and the usage state of the radiotherapy device.

[0079] If the installation position of the radiotherapy device is close to the wall, a rolling shutter door or a sliding door is selected as the first openable and closable shielding door.

[0080] If the internal space of the shielding chamber where the radiotherapy device is installed is limited, a rolling shutter door or a sliding door is selected as the first openable and closable shielding door, or a side-opening door that opens outward is selected.

[0081] When the first openable and closable shielding door is a sliding door, the manual opening method is realized by using a manual operation guide or a rolling structure (that is: by means of the guide or roller structure, manually push and pull the first openable and closable shielding door to realize the opening and closing of the first openable and closable shielding door) or a hand-crank drive method (that is: by hand-cranking to drive the transmission system of the first openable and closable shielding door, and further drive the first openable and closable shielding door to realize its opening and closing).

[0082] In order to achieve better opening and closing operations, reduce friction and increase the smoothness of opening and closing, the guide or rolling structure is a hanging roller structure.

[0083] See Figure 16a 、 16b , the hanging roller structure includes a first top roller 51 at the top end of the shielding door 5' and a first bottom slide rail 52 at the bottom end 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 on the ground. The shielding door 5' realizes left-right relative movement with the shielding chamber 3 through the first top roller 51 and the first bottom slide rail 52 to open and close.

[0084] In the embodiment of the present application, the first openable and closable shielding door is opened or closed through the first top roller 51 and the first bottom slide rail 52 at the bottom end of the shielding door 5', which can realize the smooth opening and closing of the first openable and closable shielding door, and this hanging roller structure is simple to repair and convenient to use.

[0085] See Figure 16b, the manual driving method is to perform a manual operation through a first hand crank 53 coupled (directly or indirectly) to the first openable and closable shielding door, and transmit the driving force generated by the manual operation to the first openable and closable shielding door to control the opening and closing of the first openable and closable shielding door.

[0086] In the embodiment of the present application, the opening and closing speed of the first openable and closable shielding door can be controlled by the strength and speed of manual cranking. When the first openable and closable shielding door fails or the radiotherapy equipment fails and it is necessary to perform an emergency operation to open or close the first openable and closable shielding door, the opening and closing operation of the first openable and closable shielding door can be quickly realized through manual operation.

[0087] In the embodiment of the present application, there is no limitation on the installation position of the first hand crank 53, as long as the driving force generated by the manual operation can be transmitted to the first openable and closable shielding door to control its opening and closing.

[0088] The interface between the first openable and closable shielding door and the shielding chamber is a non-straight surface splicing interface.

[0089] In order to prevent the rays in the shielding chamber from leaking through the gap between the first openable and closable shielding door and the shielding chamber, the interface between the first openable and closable shielding door and the shielding chamber is a non-straight surface splicing interface. Specifically, the interface between the first openable and closable shielding door and the shielding chamber is one of a curved surface, an S surface, a stepped surface, and a V-shaped surface.

[0090] In the embodiment of the present application, the interfaces can adopt the same interfaces or different interfaces. The embodiment of the present application is not limited to the above interfaces, and other non-straight surface splicing interfaces can also be adopted as long as the rays can be prevented from leaking at the interface.

[0091] In an embodiment of the present application, refer to Figure 17 , the shielding chamber has at least one operation port 6 for the operator to enter and exit the shielding chamber.

[0092] In the embodiment of the present application, the operation port 6 can coexist with the patient entrance 5 in the shielding chamber 3. The embodiment of the present application can also only have the patient entrance 5 or only have the operation port 6.

[0093] The operation port 6 is a second openable and closable shielding door.

[0094] That is, the operator can enter and exit by opening the second openable and closable shielding door, and the rays can be shielded by closing the second openable and closable shielding door.

[0095] In the embodiment of the present application, the second openable and closable shielding door is arranged at a position close to the radiation source, so as to facilitate the operator to enter the shielding chamber to perform opening, closing operations or maintenance on the radiation source.

[0096] To implement the opening and closing operations of the second openable and closable shielding door, the second openable and closable shielding door is opened in an electric manner and / or in a manual manner.

[0097] In the embodiment of the present application, the opening and closing operations of the second openable and closable shielding door can also be implemented by a combination of electric and manual means.

[0098] For example, the second openable and closable shielding door is opened in an electric manner. When a failure occurs or the radiotherapy equipment needs to perform emergency operations, the second openable and closable shielding door is opened in a manual manner.

[0099] Specifically, the second openable and closable shielding door is one of a sliding door, a rolling shutter door, and a side-opening door.

[0100] When there are multiple second openable and closable shielding doors, they can adopt different doors or the same doors.

[0101] In the embodiment of the present application, the second openable and closable shielding door can select the form of the door and the opening and closing direction of the door according to the place where the radiotherapy equipment is installed and the use state of the radiotherapy equipment.

[0102] For example, if the position where the radiotherapy equipment needs to be installed is close to the wall, a rolling shutter door or a sliding door is selected as the second openable and closable shielding door.

[0103] For example, if the internal space of the shielding chamber where the radiotherapy equipment is installed is limited, a rolling shutter door or a sliding door is selected as the second openable and closable shielding door, or a side-opening door that opens outwards is selected.

[0104] Specifically, the second openable and closable shielding door is a sliding door, and the manual opening method is realized by using a manual operation guide or a rolling structure (that is: by means of the guide or roller structure, manually push and pull the second openable and closable shielding door to realize the opening and closing of the second openable and closable shielding door) or a hand-crank drive method (that is: by hand-cranking to drive the transmission system of the second openable and closable shielding door, and further drive the second openable and closable shielding door to realize its opening and closing).

[0105] To achieve better opening and closing operations, reduce friction and increase the smoothness of opening and closing, the guide or rolling structure is a hanging roller structure.

[0106] Similar to the first opening and closing shielding door, the suspension roller structure adopted by the second opening and closing shielding door includes a second top roller at the top of the second opening and closing shielding door and a second bottom slide rail at the bottom of the second opening and closing shielding door. The second top roller is located in the third groove in the shielding chamber, and the second bottom slide rail is located in the fourth groove in the shielding chamber or on the ground. The second opening and closing shielding door realizes left-right relative movement with the shielding chamber through the second top roller and the second bottom slide rail to open and close.

[0107] In the embodiment of the present application, the opening or closing of the second opening and closing shielding door is realized through the second top roller and the second bottom slide rail at the bottom of the shielding door, which can achieve smooth opening and closing of the second opening and closing shielding door, and this suspension roller structure is simple to repair and convenient to use.

[0108] The manual driving method is to perform manual operation through a second hand crank coupled (directly or indirectly connected) to the second opening and closing shielding door, and transmit the driving force generated by the manual operation to the second opening and closing shielding door to control the opening and closing of the second opening and closing shielding door.

[0109] In the embodiment of the present application, the opening and closing speed of the second opening and closing shielding door can be controlled by the strength and speed of manual cranking. When the second opening and closing shielding door fails or the radiotherapy equipment fails and it is necessary to perform emergency operation to open or close the second opening and closing shielding door, the opening and closing operation of the second opening and closing shielding door can be quickly realized through manual operation.

[0110] In the embodiment of the present application, there is no limitation on the installation position of the second hand crank, as long as the driving force generated by the manual operation can be transmitted to the second opening and closing shielding door to control its opening and closing.

[0111] The interface between the second opening and closing shielding door and the shielding chamber is a non-straight surface splicing interface.

[0112] In order to prevent the rays in the shielding chamber from leaking through the gap between the second opening and closing shielding door and the shielding chamber, the interface between the second opening and closing shielding door and the shielding chamber is a non-straight surface splicing interface. Specifically, the interface between the second opening and closing shielding door and the shielding chamber is one of a curved surface, an S surface, a stepped surface, and a V-shaped surface.

[0113] In the embodiment of the present application, the interfaces can adopt the same interfaces or different interfaces. The embodiment of the present application is not limited to the above interfaces, and other non-straight surface splicing interfaces can also be adopted as long as the rays can be prevented from leaking at the interface.

[0114] In an embodiment of the present application, in order to further avoid the leakage of radiation rays when the first opening and closing shielding door or the second opening and closing shielding door is opened, as Figure 18 shown, the first opening and closing shielding door and / or the second opening and closing shielding door has an isolation chamber 7, and the isolation chamber 7 isolates the leaked rays when the first opening and closing shielding door or the second opening and closing shielding door is opened.

[0115] In the embodiment of the present application, the isolation chamber 7 isolates the radiation rays leaked when the first opening and closing shielding door or the second opening and closing shielding door is opened, so as to achieve a better radiation shielding effect.

[0116] Specifically, the isolation chamber 7 can be used for any first opening and closing shielding door and second opening and closing shielding door, such as one of a sliding door, a rolling shutter door, and a side-opening door. The isolation chamber 7 can be correspondingly arranged with the first opening and closing shielding door and / or the second opening and closing shielding door, that is, a corresponding isolation chamber 7 is separately arranged for the first opening and closing shielding door and the second opening and closing shielding door, or an isolation chamber 7 can be configured for the first opening and closing shielding door and the second opening and closing shielding door.

[0117] As Figure 18 shown, the isolation chamber 7 is arranged outside the first opening and closing shielding door and the second opening and closing shielding door in the shielding chamber 3, which is convenient for shielding the leaked rays when the first opening and closing shielding door or the second opening and closing shielding door is opened. However, the isolation chamber 7 is not limited to being arranged outside the first opening and closing shielding door and the second opening and closing shielding door, and can also be arranged at other positions, such as inside the first opening and closing shielding door and the second opening and closing shielding door.

[0118] Referring to Figure 18 , the isolation chamber 7 includes a hollow cavity 71 arranged outside the first opening and closing shielding door and the second opening and closing shielding door. Before the first opening and closing shielding door or the second opening and closing shielding door is opened, the operator enters the hollow cavity 71 to wait for the opening of the first opening and closing shielding door or the second opening and closing shielding door. When the first opening and closing shielding door or the second opening and closing shielding door is opened, the operator quickly enters the shielding chamber 3. When the first opening and closing shielding door or the second opening and closing shielding door is opened, the radiation rays leaked through the opening of the first opening and closing shielding door or the second opening and closing shielding door are shielded by the wall of the isolation chamber 7.

[0119] The hollow cavity 71 in the embodiment of the present application can be a closed cavity or an unclosed cavity.

[0120] As Figure 19As shown, in order to further isolate the leakage rays when the first openable shielding door or the second openable shielding door is opened, the isolation chamber 7 further includes an outer door 72 entering the hollow cavity 71.

[0121] The outer door 72 can be one of a sliding door, a rolling shutter door, and a side-opening door. The outer door can be one or more, or can be multiple different doors, as long as it can isolate the leakage rays when the first openable shielding door and the second openable shielding door are opened.

[0122] In order to implement the opening and closing operation of the outer door, the outer door is opened in an electric manner or a manual manner.

[0123] In the embodiment of the present application, the opening and closing operation of the outer door can also be implemented by a combination of electric and manual methods.

[0124] For example, the outer door is opened and closed in an electric manner. When a failure occurs or the radiotherapy equipment needs to perform an emergency operation, the outer door is opened manually.

[0125] See Figure 20 , in an embodiment of the present application, the first openable shielding door and / or the second openable shielding door is a revolving door. The revolving door has an isolation chamber 7. The first openable shielding door and / or the second openable shielding door shields the leakage rays when the operator enters the shielding chamber 3 through the isolation chamber 7 in the revolving door.

[0126] The revolving door is opened in an electric manner or a manual manner.

[0127] In the embodiment of the present application, the opening and closing operation of the revolving door can also be implemented by a combination of electric and manual methods.

[0128] For example, the revolving door is rotated and opened in an electric manner. When a failure occurs or the radiotherapy equipment needs to perform an emergency operation, the revolving door is rotated and opened manually.

[0129] See Figure 20 , the hand-crank driving method is to perform a hand-cranking operation through a third hand crank 73 coupled (directly or indirectly connected) to the revolving door, and transmit the driving force generated by the hand-cranking operation to the revolving door to control the opening and closing of the revolving door.

[0130] In the embodiments of the present application, the opening and closing speed of the revolving door can be controlled by the strength and speed of manual cranking. When the revolving door malfunctions or the radiotherapy equipment malfunctions and it is necessary to perform an emergency operation to open or close the revolving door, the opening and closing operation of the revolving door can be quickly realized through manual cranking operation.

[0131] In the embodiments of the present application, there is no limitation on the installation position of the third manual crank 73, as long as it can transmit the driving force generated by manual cranking operation to the revolving door to control its opening and closing.

[0132] The interface between the revolving door and the shielding chamber is a non-straight surface splicing interface.

[0133] In order to prevent the rays in the shielding chamber from leaking through the gap between the revolving door and the shielding chamber, the interface between the revolving door and the shielding chamber is a non-straight surface splicing interface. Specifically, the interface between the revolving door and the shielding chamber is one of a curved surface, an S surface, a stepped surface, and a V-shaped surface.

[0134] In the embodiments of the present application, the interfaces can adopt the same interfaces or different interfaces. The embodiments of the present application are not limited to the above interfaces, and other non-straight surface splicing interfaces can also be adopted as long as the rays do not leak at the interfaces.

[0135] In an embodiment of the present application, a display and / or playback device is provided in the shielding chamber and / or the gantry, and the display and / or playback device plays content data according to the patient's preference or user instructions.

[0136] Specifically, the patient's preference can be obtained according to the 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 sound content data. The content data played in the shielding chamber or the gantry can enable the patient during the treatment process to have a better visual experience, thereby alleviating the patient's claustrophobia during the treatment process.

[0137] See Figure 21 , in an embodiment of the present application, a fresh air system is provided in the shielding chamber 3.

[0138] The air outlet of the fresh air system is arranged at a position close to the ground on the side wall of the shielding chamber, and the air inlet is arranged at a position close to the top of the side wall of the shielding chamber or the top of the shielding chamber.

[0139] Specifically, the air outlet passes through the side wall along a preset oblique angle, and the air inlet passes through the side wall or the top of the shielding chamber along a preset oblique angle. The direction of the preset oblique angle is a direction forming an angle with the irradiation direction of the ray, so as to prevent the ray from leaking along the air outlet and / or the air inlet. Exemplarily, the preset oblique angle is 45 degrees with respect to the horizontal direction.

[0140] A protective wall may also be provided outside the air outlet and / or the air inlet, and the protective wall shields the possible ray leakage. The air inlet is far from the air outlet. The distance between the air inlet and the air outlet enables the air to flow in the shielding chamber, thereby realizing fresh air ventilation.

[0141] 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 sufficient the air flow in the shielding chamber, and the better the fresh air ventilation effect achieved.

[0142] In an embodiment of the present application, the radiation source 121 loaded on the rack 1 is an X-ray source or a gamma-ray source. For example: a medical electron accelerator for emitting X-rays; a cobalt-60 source for emitting gamma-rays.

[0143] In an embodiment of the present application, the rack 1 is configured to carry a plurality of radiation sources 121, and the rays emitted by the plurality of radiation sources 121 are focused on a point O, which is called the focus. Generally, this focus is located on the central axis of the rack 1.

[0144] In an embodiment of the present application, the rack rotates around its central axis. Through the rotational movement of the rack in the embodiment of the present application, it is realized that with fewer small-dose radiation sources, continuous large-dose irradiation can be obtained at the lesion, while only a small amount of radiation irradiation is received by the surrounding normal tissues, and the damage degree of radiotherapy is minimized.

[0145] In an embodiment of the present application, an imaging system is provided inside and / or inside the rack of the shielding chamber. The imaging system includes an X-ray generator and a detector arranged opposite to each other. The rays emitted by the X-ray generator pass through the patient's body and are received by the detector to image the lesions and / or organs in the patient's body.

[0146] The imaging system may be provided inside the shielding chamber, may also be provided inside the rack, or may be provided with an imaging system both inside the shielding chamber and inside the rack. The radiotherapy device in the embodiment of the present application may be installed with one or more sets of the above imaging systems. The number of the imaging systems provided in the radiotherapy device is not limited in the embodiment of the present application.

[0147] In an embodiment of the present 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, and the optical monitoring can be an infrared monitoring system.

[0148] The optical system may include a ray generator, a ray receiver, and markers. During use, the markers are attached to the patient's body surface. The rays emitted by the ray generator are reflected by the markers and received by the ray receiver, and the movement of the patient is determined based on the time when the reflected rays are received.

[0149] The optical monitoring system may also include a ray receiver and markers. During use, the markers are attached to the patient's body surface, and the markers autonomously emit rays, which are received by the ray receiver, and the movement of the patient is determined based on the time when the rays are received.

[0150] The optical monitoring system may also include a ray emitter and a ray receiver. During use, the rays emitted by the ray generator are reflected by the patient's skin and received by the ray receiver, and the movement of the patient is determined based on the time when the reflected rays are received.

[0151] The optical monitoring system may also include only a ray receiver. During use, the patient's skin reflects natural light, which is received by the ray receiver, and the movement of the patient is determined based on the time when the reflected rays are received.

[0152] The optical monitoring system is provided on the treatment bed, as Figure 22 shown, the optical monitoring system 8 is provided at the end part of the treatment bed 2. The optical monitoring system may also be provided at other positions of the radiotherapy device, for example: provided at the upper part of the treatment bed and suspended at the top of the shielding chamber.

[0153] In the present application, the treatment bed can be a three-dimensional bed, that is: the treatment bed can move in the transverse, longitudinal, and lifting directions. Of course, the treatment bed can also be a four-dimensional bed, a five-dimensional bed, a six-dimensional bed, etc. The four-dimensional bed, five-dimensional bed, and six-dimensional bed refer to adding rotation or swing of the treatment bed in the transverse and / or longitudinal and / or lifting directions on the basis of the above three-dimensional bed.

[0154] In the present application, the shielding chamber can be directly fixedly connected to the ground or can be fixedly connected to the base of the radiotherapy device.

[0155] In the present application, the shielding chamber can be fixedly connected to the ground or the base of the radiotherapy device through anchor bolts. The shielding chamber can be fixedly connected to the shielding layer through bolts. The shielding shell segments of the shielding chamber can be fixedly connected through bolts. Of course, other fixed connection methods can also be adopted for connection, such as welding, bonding, screw and nut connection, etc. The present application does not limit the way of realizing the fixed connection of the above structures.

[0156] A1. A radiotherapy device, characterized in that the radiotherapy device includes a treatment couch and a shielding chamber. The treatment couch includes a moving couch body and a support base. The shielding chamber surrounds the moving couch body and the support base, is arranged on the periphery of the radiotherapy device, and shields the rays generated by the radiotherapy device.

[0157] A2. The radiotherapy device according to claim A1, characterized in that the radiotherapy device further includes a gantry configured to carry a radiation source. The shielding chamber surrounds the moving couch body, the support base and the gantry, is arranged on the periphery of the radiotherapy device, forms a closed body, and shields the rays generated by the radiotherapy device.

[0158] A3. The radiotherapy device according to claim A1, characterized in that the radiotherapy device further includes a gantry configured to carry a radiation source. A shielding layer is arranged outside the gantry. The shielding chamber is coupled to the shielding layer to form a closed body and shield the rays generated by the radiotherapy device.

[0159] A4. The radiotherapy device according to claim A3, characterized in that the gantry is a hollow cylindrical structure with openings at both ends.

[0160] A5. The radiotherapy device according to claim A4, characterized in that the shielding chamber includes a first shielding chamber and a second shielding chamber. The first shielding chamber and the second shielding chamber are located on both sides of the gantry along the axial direction. The first shielding chamber and the second shielding chamber are respectively coupled to the shielding layer.

[0161] A6. The radiotherapy device according to claim A3, characterized in that a treatment cavity is formed inside the gantry. One end of the gantry has an opening for the treatment couch to enter and exit the treatment cavity, and the end of the treatment cavity opposite to the opening is closed.

[0162] A7. The radiotherapy device according to any one of claims A3 - A6, characterized in that the shielding chamber is detachably coupled to the shielding layer, or the shielding chamber and the shielding layer are integrally formed.

[0163] A8. The radiotherapy device according to any one of claims A3 - A6, characterized in that the shielding chamber is adaptively connected to the shielding layer through an adaptation structure.

[0164] A9. The radiotherapy device according to any one of claims A3 - A6, characterized in that the shielding chamber is connected to the shielding layer through an intermediate connecting member.

[0165] A10. The radiotherapy device according to claim A9, characterized in that the intermediate connecting member is adaptively connected to the shielding chamber and / or the shielding layer through an adaptation structure.

[0166] A11. The radiotherapy device according to claim A8 or A10, characterized in that the adaptation structure is a non - straight - face splicing interface.

[0167] A12. The radiotherapy device according to claim A1, characterized in that the shielding chamber comprises a plurality of shielding housing segments.

[0168] A13. The radiotherapy device according to claim A12, characterized in that the plurality of shielding housing segments are detachably spliced to form the shielding chamber.

[0169] A14. The radiotherapy device according to claim A13, characterized in that the interfaces of the plurality of shielding housing segments are non - straight - face splicing interfaces.

[0170] A15. The radiotherapy device according to claim A1, characterized in that the shielding chamber has at least one patient entrance for the patient to enter and exit the shielding chamber.

[0171] A16. The radiotherapy device according to claim A15, characterized in that the patient entrance is a first openable and closable shielding door.

[0172] A17. The radiotherapy device according to claim A16, characterized in that the first openable and closable shielding door is arranged at a position of the shielding chamber close to the treatment bed.

[0173] A18. The radiotherapy device according to claim A16, characterized in that the first openable and closable shielding door has an isolation chamber for isolating the leaked radiation when the first openable and closable shielding door is opened.

[0174] A19. The radiotherapy device according to claim A1, characterized in that the shielding chamber has at least one operation port for the operator to enter and exit the shielding chamber.

[0175] A20. The radiotherapy device according to claim A19, wherein the operation port is a second openable and closable shielding door.

[0176] A21. The radiotherapy device according to claim A20, wherein the second openable and closable shielding door has an isolation chamber for isolating the leaked radiation when the second openable and closable shielding door is opened.

[0177] A22. The radiotherapy device according to claim A16 or A20, wherein the interface between the openable and closable shielding door and the shielding chamber is a non-straight splicing interface.

[0178] A23. The radiotherapy device according to claim A2 or A3, wherein a display and / or playback device is provided inside the shielding chamber and / or inside the gantry, and the display and / or playback device plays content data according to patient preferences or user instructions.

[0179] A24. The radiotherapy device according to claim A1, wherein a fresh air system is provided inside the shielding chamber.

[0180] A25. The radiotherapy device according to claim A2 or A3, wherein the radiation source is an X-ray source or a gamma-ray source.

[0181] A26. The radiotherapy device according to claim A25, wherein the gantry is configured to carry multiple radiation sources, and the radiation emitted by the multiple radiation sources is focused at a point.

[0182] A27. The radiotherapy device according to claim A26, wherein the gantry rotates around the central axis of the gantry.

[0183] A28. The radiotherapy device according to claim A2 or A3, wherein an imaging system is provided inside the shielding chamber and / or inside the gantry.

[0184] A29. The radiotherapy device according to claim A1, wherein the radiotherapy device includes an optical monitoring system.

[0185] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements 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 the present application.

Claims

1. A radiotherapy device, characterized in that, the radiotherapy device includes a treatment couch and a shielding chamber. The treatment couch includes a moving couch body and a support base. The radiotherapy device further includes a gantry configured to carry a radiation source. The shielding chamber surrounds the moving couch body, the support base, and the gantry, is disposed at the periphery of the radiotherapy device, forms a closed body, and shields the rays generated by the radiotherapy device; a shielding layer is disposed outside the gantry. The shielding chamber has at least one entrance, and the entrance is a third openable and closable shielding door. The third openable and closable shielding door is disposed at a position of the shielding chamber facing the shielding layer, and the opening size of the third openable and closable shielding door is smaller than the size of the shielding layer in the axial direction of the gantry.

2. The radiotherapy device according to claim 1, characterized in that, the gantry is a hollow cylindrical structure with openings at both ends.

3. The radiotherapy device according to claim 1, characterized in that, a treatment cavity is formed inside the gantry. One end of the gantry has an opening for the treatment couch to enter and exit the treatment cavity, and the end of the treatment cavity opposite to the opening is closed.

4. The radiotherapy device according to claim 1, characterized in that, the shielding chamber includes a plurality of shielding shell segments.

5. The radiotherapy device according to claim 4, characterized in that, the plurality of shielding shell segments are detachably spliced to form the shielding chamber.

6. The radiotherapy device according to claim 5, characterized in that, the interfaces of the plurality of shielding shell segments are non-straight surface splicing interfaces.

7. The radiotherapy device according to claim 1, characterized in that, the shielding chamber has at least one patient entrance for the patient to enter and exit the shielding chamber.

8. The radiotherapy device according to claim 7, characterized in that, the patient entrance is a first openable and closable shielding door.

9. The radiotherapy device according to claim 8, characterized in that, the first openable and closable shielding door is disposed at a position of the shielding chamber close to the treatment couch.

10. The radiotherapy device according to claim 8, characterized in that, the first openable and closable shielding door has an isolation chamber for isolating the rays leaking when the first openable and closable shielding door is opened.

11. The radiotherapy device according to claim 1, characterized in that, the shielding chamber has at least one operation opening for the operator to enter and exit the shielding chamber.

12. The radiotherapy device according to claim 11, characterized in that, the operation opening is a second openable and closable shielding door.

13. The radiotherapy device according to claim 12, characterized in that, the second openable and closable shielding door has an isolation chamber for isolating the rays leaking when the second openable and closable shielding door is opened.

14. The radiotherapy device according to claim 8 or 12, characterized in that, the interface between the openable and closable shielding door and the shielding chamber is a non-straight surface splicing interface.

15. The radiotherapy device according to claim 1, characterized in that, A display and / or playback device is provided inside the shielding chamber and / or inside the gantry, and the display and / or playback device plays content data according to patient preferences or user instructions.

16. The radiotherapy equipment according to claim 1, wherein, a fresh air system is provided inside the shielding chamber.

17. The radiotherapy equipment according to claim 1, wherein, the radiation source is an X-ray source or a gamma-ray source.

18. The radiotherapy equipment according to claim 17, wherein, the gantry is configured to carry a plurality of radiation sources, and the rays emitted by the plurality of radiation sources are focused at a point.

19. The radiotherapy equipment according to claim 18, wherein, the gantry rotates around the central axis of the gantry.

20. The radiotherapy equipment according to claim 1, wherein, an imaging system is provided inside the shielding chamber and / or inside the gantry.

21. The radiotherapy equipment according to claim 1, wherein, the radiotherapy equipment includes an optical monitoring system.

Images