Body position fixing device for thoracic and abdominal tumor radiotherapy

Abstract

The invention discloses a thoracic and abdominal tumor radiotherapy body position fixing device, which belongs to the field of medical instruments, and comprises a radiotherapy bed, and a head fixing part, body fixing parts and a thoracic and abdominal adjusting fixing part which are arranged on the radiotherapy bed, and the body fixing parts are arranged on the left side and the right side of the thoracic and abdominal adjusting fixing part; the chest and abdomen adjusting and fixing part is used for matching the head fixing part and the body fixing part according to different body positions and different body states of the chest and abdomen tumor patient to fix the radiotherapy body position of the chest and abdomen tumor patient. According to the invention, the chest and abdomen fixing assembly cooperates with the head fixing part and the body fixing part to fix the radiotherapy body position of the patient according to different body positions and body states of the patient, so that the body position is fixed according to the different body positions and body states of the patient; and the head fixing part and the body fixing part are matched to fix the radiotherapy body position of the thoracic and abdominal tumor patient, so that the repeatability of the body position of the patient in the radiotherapy process is improved, the positioning error is avoided, and the treatment effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a body position fixing device for radiotherapy of thoracic and abdominal tumors. Background Art

[0002] Abdominal tumors refer to various tumors that occur in the chest and abdominal cavities, including but not limited to thymoma, lung cancer, esophageal cancer, stomach cancer, liver cancer, pancreatic cancer, etc. These tumors may affect the functions of multiple organs and cause serious health problems.

[0003] Radiotherapy for thoracic and abdominal tumors is a method of using radiation to treat thoracic and abdominal tumors. Radiotherapy refers to the use of radiation such as X-rays, gamma rays, and electron beams to irradiate lesions. In radiotherapy, body position fixation is a key link to ensure the accuracy of treatment. By using fixation technologies such as vacuum pads and thermoplastic membranes, the movement of patients during treatment can be effectively reduced, thereby reducing positioning errors and improving the accuracy of radiotherapy. Studies have shown that the combination of vacuum pads and thermoplastic membranes can reduce positioning errors, keep the body position unchanged during radiotherapy, and thus improve the treatment effect.

[0004] However, due to the complexity of the anatomical characteristics of patients with thoracic and abdominal tumors, such as the influence of factors such as body shape, weight, skin traction, abdominal breathing, etc., the vacuum pad may not be comfortable during use and poorly fit the patient's skin, and the thermoplastic body film may cause skin compression damage during fixation, especially the high risk of locking and falling off during fixation. The repeatability of the patient's position during radiotherapy is poor, which is easy to cause positioning errors. This error may affect the treatment effect and increase the risk of tumor recurrence.

[0005] Therefore, in order to improve the accuracy and efficacy of radiotherapy, the existing fixation technology needs to be improved to reduce positioning errors and improve repeatability. Summary of the invention

[0006] In response to the above-mentioned problems, the present invention aims to provide a body position fixation device for thoracic and abdominal tumor radiotherapy, which can avoid the problem of poor repeatability of body position during radiotherapy in existing body position fixation technology, which easily leads to positioning errors, reduce positioning errors and improve repeatability, thereby improving the accuracy and treatment effect of radiotherapy.

[0007] The main technical ideas adopted by the present invention are as follows: in order to design a body position fixation device for radiotherapy of thoracic and abdominal tumors which can reduce positioning errors and improve repeatability, and improve the accuracy and efficacy of radiotherapy, a radiotherapy bed and a head fixing part, a body fixing part and a thoracic and abdominal fixing part are designed on the radiotherapy bed. The head fixing part is used to fix the patient's head, and the body fixing part is used to clamp and fix the body according to different body positions of the patient. The thoracic and abdominal fixation component can fix the radiotherapy position of the thoracic and abdominal tumor patient according to different body positions and different body states of the thoracic and abdominal tumor patient, thereby realizing that the thoracic and abdominal fixation component can fix the body position according to different body positions and different body states of the thoracic and abdominal tumor patient, and cooperate with the head fixing part and the body fixing part to fix different radiotherapy positions of the thoracic and abdominal tumor patient, realizing that the patient can be fixed according to different body positions and different body states of the patient, thereby improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A body position fixation device for radiotherapy of thoracic and abdominal tumors comprises a radiotherapy bed and a head fixation part, a body fixation part and a thoracic and abdominal adjustment fixation part arranged on the radiotherapy bed, wherein the body fixation part is arranged on the left and right sides of the thoracic and abdominal adjustment fixation part, and the thoracic and abdominal adjustment fixation part is used to fix the radiotherapy body position of the thoracic and abdominal tumor patients in cooperation with the head fixation part and the body fixation part according to the different body positions and different physical conditions of the thoracic and abdominal tumor patients.

[0009] In the embodiment of the present application, a head fixing part, a chest and abdomen adjustment fixing part and a body fixing part are designed on the radiotherapy bed body, and the head fixing part, the chest and abdomen adjustment fixing part and the body fixing part are used to adjust and fix the patient's position according to the patient's different physical characteristics, different diseases and different body position requirements. The chest and abdomen adjustment fixing part can be adjusted and fixed according to the different body positions and different body states of the patient with chest and abdominal tumors, and cooperate with the head fixing part and the body fixing part to complete the fixation of the radiotherapy position of the patient with chest and abdominal tumors, thereby achieving the fixation of the patient according to the patient's different body positions and different body shapes, so that the patient can maintain a comfortable posture and a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0010] Through the above technical scheme, further: a cavity is provided on the upper part of the radiotherapy bed, the chest and abdomen adjustment and fixing part is provided in the cavity of the radiotherapy bed, the chest and abdomen adjustment and fixing part includes an abdomen adjustment and fixing component, a first connecting plate, a second connecting plate, an adjustment plate, a third connecting plate and two chest adjustment and fixing components, the abdomen adjustment component, the first connecting plate, the second connecting plate and the adjustment plate are connected in sequence; the adjustment plate is provided with two placement holes, the chest adjustment and fixing component is provided in the placement holes of the adjustment plate, and is connected to the adjustment plate through the third connecting plate.

[0011] The upper part of the radiotherapy bed is designed to have a cavity, and the chest and abdomen adjustment and fixing part is arranged in the cavity of the radiotherapy bed. The chest and abdomen adjustment and fixing part includes an abdomen adjustment component, a first connecting plate, a second connecting plate, an adjustment plate, a third connecting plate and two chest adjustment and fixing components. The adjustment component, the first connecting plate, the second connecting plate and the adjustment plate are connected in sequence. When in use, the patient lies on the bed body of the radiotherapy bed. When the patient is in a supine position, the patient lies flat on the treatment bed. At this time, the adjustment component, the first connecting plate, the second connecting plate and the adjustment plate are affected by the patient's body gravity and body shape to change their shapes, and cooperate with the clamping and fixing of the body by the body fixing part and the fixing effect of the head fixing part, so that the patient can maintain comfort during radiotherapy. The invention can realize a comfortable posture and a stable body position, and at the same time improve the repeatability of the patient's body position during radiotherapy, avoid positioning errors, and improve the treatment effect; when the patient is in a prone position, the patient lies on the treatment bed, and at this time the adjustment component, the first connecting plate, the second connecting plate and the adjustment plate change their shapes under the influence of the patient's body gravity and body shape, and at the same time the chest adjustment and fixing component adjusts and fixes the patient's chest according to the patient's chest position and shape, and cooperates with the clamping and fixing of the body by the body fixing part and the fixing effect of the head fixing part, so that the patient can maintain a comfortable posture and a stable body position during radiotherapy, and at the same time improve the repeatability of the patient's body position during radiotherapy, avoid positioning errors, and improve the treatment effect.

[0012] Through the above technical solution, further: a second movable push rod is provided on the left side of the radiotherapy bed, a movable push plate is connected to the right side of the second movable push rod, the first connecting member is provided on the movable push plate, and the second movable push rod is used to push the position change of the movable push plate to achieve the extension and shortening of the abdominal adjustment component; two first movable push rods are provided on the right side of the radiotherapy bed, the first movable push rod is located below the adjustment plate, and the first movable push rod is used to push the adjustment plate to rise and fall Through the above technical solution, further: the abdomen adjustment component includes a plurality of abdomen adjustment rods and a plurality of retractable adjustment parts, the plurality of abdomen adjustment rods are arranged in parallel, and a plurality of retractable adjustment parts are arranged between every two abdomen adjustment rods.

[0013] Based on the above scheme, multiple abdominal adjustment rods and multiple retractable adjustment parts are designed to retract and change their shapes according to the patient's body gravity and body shape, and have a strong fit with the patient's skin, so that the patient's position can be maintained more comfortably and stably fixed, thereby reducing positioning errors and allowing the patient's position to remain unchanged during radiotherapy, thereby improving the treatment effect. Through the above technical scheme, further: the chest adjustment and fixing assembly includes an adjustment sleeve, a connecting sleeve and a plurality of chest adjustment and fixing blocks, the adjustment sleeve is sleeved on the outer periphery of the connecting sleeve, a plurality of first connecting columns are arranged below the connecting sleeve, a connecting hole is arranged in the middle of the chest adjustment and fixing block, the connecting sleeve and the chest adjustment and fixing block are connected together through the first connecting column and the connecting hole; the adjustment sleeve is provided with a plurality of arc tracks, and the second connecting column is arranged in the arc track of the adjustment sleeve.

[0014] Through the above technical solution, further: a third movable push rod is provided below the adjusting sleeve, and a movable end of the third movable push rod is fixedly connected to one of the chest adjustment fixing blocks.

[0015] Based on the above design, the chest adjustment and fixing assembly includes multiple chest adjustment and fixing blocks, the chest adjustment and fixing blocks are provided with a connecting hole, the first connecting column is arranged in the connecting hole of the chest fixing and adjusting block, so as to connect the multiple chest adjustment and fixing blocks together, the end of the chest adjustment and fixing block is provided with a second connecting column, the second connecting column is arranged in the arc track of the adjusting sleeve, and a third movable push rod is provided below the adjusting sleeve, one end of the third movable push rod is connected to the adjusting sleeve, and the other end is connected to one of the chest adjustment and fixing blocks. When in use, by adjusting the push-out and retraction of the third movable push rod, the chest adjustment block is pushed to move along the arc track of the adjusting sleeve, and the opening size of the chest adjustment and fixing block is controlled by adjusting the movable push rod, so as to realize the chest adjustment and fixing assembly, which can be adjusted according to the position and size of the chest part of different patients to adapt to different people, thereby improving the comfort of the patient, making the patient's body position more comfortable to maintain and stably fixed, thereby reducing the positioning error, so that the patient's body position remains unchanged during radiotherapy, thereby improving the treatment effect.

[0016] Through the above technical solution, further: a spring is provided inside the chest adjustment fixing block.

[0017] Through the above technical solution, further: the head fixing part includes a head cover and a movable push rod arranged in the center hole of the head cover.

[0018] Through the above technical scheme, further: a motor is provided at the bottom of the radiotherapy bed, a gear is connected to the bottom of the motor, and the body fixing part includes a clamping plate, a first telescopic rod, a connecting rod, a second telescopic rod and an adjusting rod; the connecting rod is arranged in a connecting sleeve on the side of the radiotherapy bed, the first telescopic rod and the second telescopic rod are respectively arranged at both ends of the connecting rod, the splint clamping plate is arranged at the end of the first telescopic rod, the adjusting rod is arranged at the end of the second telescopic rod, the adjusting rod is provided with a rack, and the rack of the adjusting rod is meshed with the gear.

[0019] Through the above technical solution, further: two adjustment covers are provided above the chest and abdomen adjustment fixing part.

[0020] The technical effects achieved by the present invention are as follows: 1. The chest and abdomen adjustment fixation part can be adjusted and fixed according to the different body positions and different physical conditions of patients with chest and abdominal tumors, and cooperate with the head fixation part and the body fixation part to complete the fixation of the radiotherapy position of patients with chest and abdominal tumors, so that the patient can be fixed according to the different body positions and different postures of the patient, so that the patient can maintain a comfortable posture and a stable position during radiotherapy, and at the same time improve the repeatability of the patient's position during radiotherapy, avoid positioning errors, and improve the treatment effect.

[0021] 2. The adjustment component, the first connecting plate, the second connecting plate and the adjustment plate can change their shapes according to the influence of the patient's body gravity and body shape, and cooperate with the clamping and fixing of the body by the body fixing part and the fixing effect of the head fixing part, so that the patient can maintain a comfortable posture and a stable position during radiotherapy, and at the same time improve the repeatability of the patient's position during radiotherapy, avoid positioning errors, and improve the treatment effect.

[0022] 3. The chest adjustment and fixation component can be adjusted according to the position and size of the chest area of ​​different patients to adapt to different people, thereby improving the patient's comfort and making the patient's position more comfortably maintained and stably fixed, thereby reducing positioning errors and keeping the patient's position unchanged during radiotherapy, thereby improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a body position fixation device for thoracic and abdominal tumor radiotherapy in an embodiment of the present application; Figure 2 It is a schematic diagram of the structure of a top view of a body position fixation device for radiotherapy of thoracic and abdominal tumors in an embodiment of the present application; Figure 3 This is a front view structural schematic diagram of a body position fixation device for thoracic and abdominal tumor radiotherapy according to an embodiment of the present application; Figure 4 This is a schematic diagram of the structure of a bottom view of a body position fixation device for thoracic and abdominal tumor radiotherapy in an embodiment of the present application; Figure 5 It is a structural schematic diagram of a chest and abdomen tumor radiotherapy position fixation device in an embodiment of the present application without the chest and abdomen adjustment fixation part; Figure 6 It is a schematic diagram of the structure of a top view of a chest and abdomen tumor radiotherapy position fixation device in an embodiment of the present application without a chest and abdomen adjustment fixation part; Figure 7 In the embodiment of this application Figure 5 A schematic diagram of a cross-sectional view of the structure; Figure 8 It is a structural schematic diagram of a cross-sectional view of a body position fixation device for thoracic and abdominal tumor radiotherapy according to an embodiment of the present application; Fig. 9 It is a schematic diagram of the overall structure of the chest and abdomen adjustment and fixation part of a chest and abdomen tumor radiotherapy position fixation device in an embodiment of the present application.

[0024] Fig.10 It is a side structural schematic diagram of the chest and abdomen adjustment and fixation part of a chest and abdomen tumor radiotherapy position fixation device in an embodiment of the present application.

[0025] Fig.11 It is a structural schematic diagram of an abdominal adjustment component of a body position fixation device for thoracic and abdominal tumor radiotherapy in an embodiment of the present application.

[0026] Fig.12 It is a schematic diagram of the connection structure of an adjustment plate and a third connection plate of a body position fixation device for radiotherapy of thoracic and abdominal tumors in an embodiment of the present application.

[0027] Fig.13 It is a structural schematic diagram of a first connecting plate of a body position fixation device for thoracic and abdominal tumor radiotherapy in an embodiment of the present application.

[0028] Fig.14 It is a structural schematic diagram of a second connecting plate of a body position fixation device for thoracic and abdominal tumor radiotherapy in an embodiment of the present application.

[0029] Fig.15 It is a structural schematic diagram of a chest adjustment and fixation component of a chest and abdominal tumor radiotherapy position fixation device in an embodiment of the present application.

[0030] Fig.16 It is a structural schematic diagram of a chest adjustment and fixation assembly of a chest and abdominal tumor radiotherapy position fixation device in an embodiment of the present application, without an adjustment sleeve.

[0031] Fig.17 It is a structural schematic diagram of an adjustment sleeve of a body position fixation device for thoracic and abdominal tumor radiotherapy in an embodiment of the present application.

[0032] Fig.18It is a structural schematic diagram of a connecting sleeve of a chest and abdomen tumor radiotherapy position fixation device in an embodiment of the present application.

[0033] Fig.19 It is a structural schematic diagram of a chest adjustment fixing block of a chest and abdominal tumor radiotherapy position fixing device in an embodiment of the present application.

[0034] Fig. 20 It is a schematic cross-sectional structural diagram of a chest adjustment and fixing block of a chest and abdominal tumor radiotherapy position fixing device in an embodiment of the present application.

[0035] Fig.21 It is a structural schematic diagram of a thoracic and abdominal tumor radiotherapy position fixation device with an adjustable cover in an embodiment of the present application.

[0036] Markings in the figure: 1-radiotherapy bed, 101-first connecting piece, 102-first movable push rod, 103-second movable push rod, 104-movable push plate, 2-head fixing part, 201-head cover, 202-movable push rod, 3-body fixing part, 301-clamping plate, 302-first telescopic rod, 303-connecting rod, 304-second telescopic rod, 305-adjusting rod, 4-chest and abdomen adjustment fixing part, 401-abdomen adjustment fixing assembly, 4011-second connecting piece, 4012-abdomen adjustment rod, 4013- Retractable adjusting member, 402-first connecting plate, 403-second connecting plate, 404-adjusting plate, 4041-third connecting member, 405-third connecting plate, 406-chest adjustment fixing assembly, 4061-adjusting sleeve, 4062-chest adjustment fixing block, 4063-third movable push rod, 4064-connecting sleeve, 4065-first connecting column, 4066-connecting hole, 4067-second connecting column, 4068-spring, 5-motor, 501-gear, 6-connecting sleeve, 7-adjusting cover. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of this application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] Radiotherapy for thoracic and abdominal tumors is a method of using radiation to treat thoracic and abdominal tumors. Radiotherapy refers to the use of radiation such as X-rays, gamma rays, and electron beams to irradiate lesions. In radiotherapy, body position fixation is a key link to ensure the accuracy of treatment. By using fixation technologies such as vacuum pads and thermoplastic membranes, the movement of patients during treatment can be effectively reduced, thereby reducing positioning errors and improving the accuracy of radiotherapy. Studies have shown that the combination of vacuum pads and thermoplastic membranes can reduce positioning errors, keep the body position unchanged during radiotherapy, and thus improve the treatment effect.

[0044] The inventors found that due to the complexity of the anatomical characteristics of patients with thoracic and abdominal tumors, such as the influence of factors such as body shape, weight, skin traction, abdominal breathing, etc., the vacuum pad may not be comfortable during use and poorly fit the patient's skin, and the thermoplastic body film may cause skin compression damage during fixation, especially the high risk of locking and falling off during fixation. The repeatability of the patient's position during radiotherapy is poor, which is easy to cause positioning errors. Such errors may affect the treatment effect and increase the risk of tumor recurrence.

[0045] Based on the above findings, in order to reduce positioning errors and improve repeatability, and to improve the accuracy and efficacy of radiotherapy, a chest and abdomen tumor radiotherapy position fixation device is proposed. By designing a radiotherapy bed and a head fixation part, a body fixation part and a chest and abdomen fixation part arranged on the radiotherapy bed, the head fixation part is used to fix the patient's head, and the body fixation part is used to clamp and fix the body according to different body positions of the patient. The chest and abdomen fixation assembly can be used according to different body positions and different physical conditions of the chest and abdomen tumor patients, in cooperation with the head fixation part 2 and the body fixation part 3 to complete the fixation of the radiotherapy position of the chest and abdomen tumor patients. In the present application, a radiotherapy bed and a head fixing part, a body fixing part and a chest and abdomen fixing part are designed on the radiotherapy bed. The head fixing part is used to fix the patient's head, and the body fixing part is used to clamp and fix the body according to different body positions of the patient. The chest and abdomen fixing assembly can fix the radiotherapy position of the chest and abdomen tumor patients according to different body positions and different body states of the chest and abdomen tumor patients in cooperation with the head fixing part and the body fixing part, thereby realizing that the chest and abdomen fixing assembly can fix the body position according to different body positions and different body states of the chest and abdomen tumor patients, and cooperate with the head fixing part and the body fixing part to fix the different radiotherapy positions of the chest and abdomen tumor patients, thereby realizing that the patient can be fixed according to different body positions and different body states of the patient, thereby improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0046] See attached Figure 1-21In the embodiment of the present application, a thoracic and abdominal tumor radiotherapy position fixing device comprises a radiotherapy bed 1 and a head fixing part 2, a body fixing part 3 and a thoracic and abdominal adjustment fixing part 4 arranged on the radiotherapy bed 1; the head fixing part 2 is arranged above the thoracic and abdominal adjustment fixing part 4, and the head fixing part 2 is used to fix the patient's head, so that the patient can keep the head stable during the radiotherapy process, reduce the movement of the head, thereby reducing the error caused by the movement of the head, helping to keep the patient's position stable, and improve the accuracy and treatment effect of radiotherapy; the body fixing part 3 is arranged on the left and right sides of the thoracic and abdominal adjustment fixing part 4, and the body fixing part 3 is used to fix the patient's position according to different physical characteristics and conditions of different patients, and the thoracic and abdominal adjustment fixing part 4 is used to complete the fixation of the radiotherapy position of the thoracic and abdominal tumor patient according to different body positions and different physical conditions of the thoracic and abdominal tumor patient, in cooperation with the head fixing part 2 and the body fixing part 3.

[0047] In the embodiment of the present application, the radiotherapy bed 1 is used to provide a comfortable and stable body position support for patients with thoracic and abdominal tumors when receiving treatment, so as to facilitate the smooth progress of radiotherapy, and to provide a setting and installation position for the head fixation component, the thoracic and abdominal adjustment fixation part, and the body fixation component. It should be noted that the specific configuration of the radiotherapy bed 1 can be specifically configured according to the actual use needs and use location of patients with thoracic and abdominal tumors undergoing radiotherapy. For example, in the embodiment of the present application, the radiotherapy bed 1 can also be configured with new technologies such as image-guided radiotherapy (IGRT) and adaptive radiotherapy (ART) according to specific needs to improve the accuracy of radiotherapy and reduce radiation damage to normal tissues.

[0048] In the embodiment of the present application, a head fixing part, a chest and abdomen adjustment fixing part and a body fixing part are designed on the radiotherapy bed body, and the head fixing part, the chest and abdomen adjustment fixing part and the body fixing part are used to adjust and fix the patient's position according to the patient's different physical characteristics, different diseases and different body position requirements. The chest and abdomen adjustment fixing part can be adjusted and fixed according to the different body positions and different body states of the patient with chest and abdominal tumors, and cooperate with the head fixing part and the body fixing part to complete the fixation of the radiotherapy position of the patient with chest and abdominal tumors, thereby achieving the fixation of the patient according to the patient's different body positions and different body shapes, so that the patient can maintain a comfortable posture and a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0049] In some embodiments, the head fixing part 2 includes a head cover 201 and a movable push rod 202 disposed in a central hole of the head cover 201 .

[0050] In the embodiment of the present application, the head fixation 2 includes a head cover and a movable push rod disposed at the central hole of the head cover. When in use, the patient's head can be rested on the head cover 201 and placed on the central hole of the head cover 201. By adjusting the depth of the movable push rod, the head fixation part 2 can adapt to different body positions (such as supine position and prone position) and different head shapes, fix the patient's head, help the patient keep the head stable during radiotherapy, reduce the movement of the head, thereby reducing the error caused by the movement of the head, help maintain the patient's body position stability, and improve the accuracy and treatment effect of radiotherapy. For example, when the patient is in a prone position, the patient's face is resting on the central hole of the head cover 201 with the face facing down. By adjusting the depth of the movable push rod, the head fixation part can adapt to the patient's head shape and state at this time to fix the patient's head, help the patient keep the head stable during radiotherapy, reduce the movement of the head, thereby maintain the patient's body position stability, and improve the accuracy and treatment effect of radiotherapy. Furthermore, in the embodiment of the present application, through the design of the movable push rod, when the patient is in the prone position, a certain space is left in front of the face, so that the patient has room to breathe when in the prone position, and the patient can maintain a comfortable posture during long-term radiotherapy. This helps to reduce the patient's fatigue and improve their cooperation, thereby maintaining the patient's body position stable and improving the accuracy and treatment effect of radiotherapy.

[0051] It should be noted that, in some embodiments, the movable push rod 202 can be an electric push rod. The design of the electric push rod enables the operator to remotely adjust and precisely control the head fixing part in the embodiment of the present application, thereby improving the safety and convenience of operation.

[0052] See attached Figure 1-6 A motor 5 is provided at the bottom of the radiotherapy bed 1, and a gear 501 is connected to the bottom of the motor. The body fixing part 3 is arranged on the left and right sides of the chest and abdomen adjustment fixing part 4. The body fixing part 3 includes a clamping plate 301, a first telescopic rod 302, a connecting rod 303, a second telescopic rod 304 and an adjusting rod 305; the connecting rod 303 is arranged in a connecting sleeve 6 on the side of the radiotherapy bed 1, and the connecting rod 303 is a "U"-shaped rod. The first telescopic rod 302 and the second telescopic rod 304 are respectively arranged at both ends of the connecting rod 303, the splint clamping plate 301 is arranged at the end of the first telescopic rod 302, and the adjusting rod 305 is arranged at the end of the second telescopic rod 304. The adjusting rod 305 is provided with a rack, and the rack of the adjusting rod 305 is meshed with the gear 501.

[0053] In the embodiment of the present application, a body fixing part is arranged on the left and right sides of the chest and abdomen adjustment fixing part, and the body fixing part includes a clamping plate 301, a first telescopic rod 302, a connecting rod 303, a second telescopic rod 304 and an adjusting rod 305. The connecting rod is sleeved in a connecting sleeve 6 arranged on the side of the radiotherapy bed. The connecting rod is a "U"-shaped rod. The first telescopic rod and the second telescopic rod are arranged at the upper and lower ends of the "U"-shaped connecting rod. The end of the first telescopic rod is connected to a clamping plate for clamping the patient's body, and the end of the second telescopic rod is connected to an adjusting rod with a rack design meshed with a motor gear. When in use, the gear 501 is driven to rotate by starting the motor 5, and then the adjusting rod meshed with the gear 501 is driven to move left and right. Since the adjusting rod is connected to the end of the second telescopic rod 304, the second telescopic rod at the bottom is pressed to drive the concentration of the first telescopic rod 302 connected to the other end of the connecting rod 303, thereby pushing the clamping plate 301 to clamp and fix the patient's body, thereby achieving the effect of clamping the patient's body in the middle, and achieving the fixation of the radiotherapy position of chest and abdominal tumors.

[0054] In the embodiment of the present application, the connecting sleeve 6 is fixedly connected to the side of the radiotherapy bed 1, and the connecting sleeve 6 is used to sleeve the connecting rod 303 on the connecting sleeve, so that the position of the connecting rod 303 is fixed by the connecting sleeve 6, thereby maintaining the stability of the position of the connecting rod 303, so that when the gear 501 rotates to drive the adjusting rod meshing with the gear 501 to move left and right, the adjusting rod moves to press the second telescopic rod at the bottom to drive the concentration of the first telescopic rod 302 connected to the other end of the connecting rod 303, thereby pushing the clamping plate 301 to clamp and fix the patient's body stably, ensuring the accuracy and stability of the body fixing part of a chest and abdominal tumor radiotherapy position fixing device in the embodiment of the application to clamp and fix the patient's body, thereby improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0055] It should be noted that in the embodiment of the present application, the first telescopic rod and the second telescopic rod can be hydraulic rods, which can adjust the pressure and flow of the hydraulic oil to achieve precise control of the body fixation part on the patient's body, and the hydraulic rod can provide stable supporting force and buffering effect, thereby ensuring the stable operation of the body fixation part of a chest and abdominal tumor radiotherapy position fixation device in the embodiment of the present application under various working conditions. In the present application, the gear is driven to rotate by starting the motor, thereby driving the rack of the adjusting rod to move left and right. The rack of the adjusting rod is connected to the end of the second hydraulic rod. The rack of the adjusting rod moves left and right to press the second hydraulic rod connected to the connecting rod to drive the pressure of the first hydraulic rod on the upper part of the connecting rod to concentrate, and then the various parts of the body fixing part cooperate with each other to push the clamping plate to clamp and fix the patient's body to the middle of the clamping plate of the body fixing part, thereby achieving radiotherapy position fixation for patients with thoracic and abdominal tumors, and the body fixing part can clamp and fix the patient's body according to the patient's different positions, different conditions and different postures, so that the patient can maintain a comfortable posture and a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0056] It should be noted that, in some embodiments of the present application, the clamping plate 301, the first telescopic rod 302, the connecting rod 303, the second telescopic rod 304 and the adjusting rod 305 are fixedly connected. By adopting the fixed connection method, the various components of the body fixing part, such as the clamping plate and the first telescopic rod, can be firmly connected together, which has high stability, reliable torque transmission, compact structure, easy maintenance and high safety. It can ensure the accuracy and stability of the body fixing part of a thoracic and abdominal tumor radiotherapy position fixation device in the application embodiment in clamping and fixing the patient's body, thereby improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0057] In addition, it should be noted that the materials and lengths of the clamping plate, the first telescopic rod, the connecting rod, the second telescopic rod and the adjustment rod in the embodiment of the present application can be designed according to specific clinical use requirements, as long as they can meet the requirements of body position fixation and radiotherapy surgery for chest and abdominal tumors.

[0058] Refer to the attached Figure 7-19A cavity is provided on the upper part of the radiotherapy bed 1, and a chest and abdomen adjustment and fixing part 4 is provided in the cavity of the radiotherapy bed 1. The chest and abdomen adjustment and fixing part includes an abdomen adjustment and fixing component 401, a first connecting plate 402, a second connecting plate 403, an adjustment plate 404, a third connecting plate 405 and two chest adjustment and fixing components 406. The abdomen adjustment component 401, the first connecting plate 402, the second connecting plate 403 and the adjustment plate 404 are connected in sequence; the adjustment plate 404 is provided with two placement holes, and the chest adjustment and fixing component 406 is arranged in the placement hole of the adjustment plate 404 and is connected to the adjustment plate 404 through the third connecting plate 405. The chest adjustment and fixing component 406 is used to adjust and fix the patient's chest part according to the position and size of the patient's chest part, can adapt to different patients, and ensure the comfort of fixing the chest part of the chest and abdomen radiotherapy patients, so that the chest and abdomen radiotherapy patients can maintain a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0059] In the embodiment of the present application, a cavity is provided on the upper part of the radiotherapy bed 1, and the chest and abdomen adjustment and fixing part 4 is provided in the cavity of the radiotherapy bed 1. The chest and abdomen adjustment and fixing part includes an abdomen adjustment component 401, a first connecting plate 402, a second connecting plate 403, an adjustment plate 404, a third connecting plate 405 and two chest adjustment and fixing components 406. The adjustment component 401, the first connecting plate 402, the second connecting plate 403 and the adjustment plate 404 are connected in sequence. When in use, the patient lies on the bed body of the radiotherapy bed 1. When the patient is in a supine position, the patient lies flat on the treatment bed. At this time, the adjustment component, the first connecting plate, the second connecting plate and the adjustment plate are affected by the patient's body gravity and body shape to change their shapes, and cooperate with the body fixing part to clamp and fix the body and the head fixing part to fix the head. The fixing effect enables the patient to maintain a comfortable posture and a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect; when the patient is in a prone position, the patient lies on the treatment bed, and at this time the adjustment component, the first connecting plate, the second connecting plate and the adjustment plate change their shapes under the influence of the patient's body gravity and body shape, and at the same time the chest adjustment and fixing component adjusts and fixes the patient's chest according to the patient's chest position and shape, and cooperates with the clamping and fixing of the body by the body fixing part and the fixing effect of the head fixing part, so that the patient can maintain a comfortable posture and a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0060] In the embodiment of the present application, the abdominal adjustment component 401 includes a plurality of abdominal adjustment rods 4012 and a plurality of retractable adjustment parts 4013. The plurality of abdominal adjustment rods 4012 are arranged in parallel, and a plurality of retractable adjustment parts 4013 are arranged between every two abdominal adjustment rods 4012. The plurality of abdominal adjustment rods and the plurality of retractable adjustment parts are designed to retract and change their shapes according to the patient's body gravity and body shape, and have a strong fit with the patient's skin, so that the patient's body position can be maintained more comfortably and stably fixed, thereby reducing positioning errors and allowing the patient's body position to remain unchanged during radiotherapy, thereby improving the treatment effect.

[0061] As an example, the abdominal adjustment component 401 may include eight abdominal adjustment rods, which are arranged in parallel, and six retractable adjustment parts are evenly spaced between every two abdominal adjustment rods. When in use, due to the effects of the patient's gravity and body shape, the abdominal adjustment rods and retractable adjustment parts of the abdominal adjustment component are retracted and transformed, which can comfortably maintain and stably fix the patient's position to adapt to the patient's body shape, thereby reducing positioning errors, allowing the patient's position to remain unchanged during radiotherapy, and improving the treatment effect.

[0062] It should be noted that, in some embodiments, the telescopic adjusting member 4013 may be a telescopic rod or a spring adjusting member. The telescopic rod or the spring adjusting member has a simple structure, low cost, and easy operation.

[0063] In the embodiment of the present application, a first connecting member 101 is provided on the side of the cavity of the radiotherapy bed 1, a second connecting member 4011 is provided on the side of the abdomen adjustment component 401, and a third connecting member 4041 is provided on the side of the adjustment plate 404. The abdomen adjustment component 401 is connected to the radiotherapy bed 1 through the second connecting member 4011 and the first connecting member 101, and the adjustment plate 404 is connected to the radiotherapy bed 1 through the third connecting member 4041 and the first connecting member 101. A groove is provided on the second connecting plate 403, and the first connecting plate 402 is movably connected in the groove of the second connecting plate 403.

[0064] In the embodiment of the present application, the abdominal adjustment component 401 is connected to the radiotherapy bed 1 through the second connecting member 4011 and the first connecting member 101, and the first connecting plate is movably connected in the groove of the second connecting plate. When in use, when the patient lies on the bed of the radiotherapy bed, the head is in the head cover of the head fixing part, the abdominal adjustment and fixing component, the first connecting plate, the second connecting plate, the adjustment plate, the third connecting plate and the two chest adjustment and fixing components are subject to the different gravity and different body shapes of different patients, and the telescopic changes are in the state of the body shape of the patient, and the chest and abdomen of the patient are adjusted and fixed, so that the chest and abdomen radiotherapy patients can maintain a comfortable posture and stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect. For example, when the patient is in a prone position, the adjustment component, the first connecting plate, the second connecting plate and the adjustment plate are affected by the patient's body gravity and body shape (such as the body shape of the chest and abdomen) and change their shapes, so that various body parts of the patient can maintain a comfortable posture and a stable position during radiotherapy, while improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0065] In some embodiments, a second movable push rod 103 is provided on the left side of the radiotherapy bed 1, and a movable push plate 104 is connected to the right side of the movable push rod 103. The first connecting member 101 is provided on the movable push plate 104. The second movable push rod 103 is used to push the position change of the movable push plate 104 to achieve the extension and shortening of the abdomen adjustment component 401; two first movable push rods 102 are provided on the right side of the radiotherapy bed 1, and the first movable push rod 102 is located below the adjustment plate 404. The first movable push rod 102 is used to push the adjustment plate 404 to rise and fall. When in use, when the patient lies on the bed of the radiotherapy bed, the second movable push rod 103 on the left side can be pushed out and recovered to achieve the extension and shortening of the distance of the abdomen adjustment component; the first movable push rod 102 on the right side can be recovered and lowered under the influence of its own gravity, and can be raised under the push of the first movable push rod 102, so that when the patient's back is in a hunchback state, it can be sunken according to the back state to improve the patient's comfort.

[0066] It should be noted that in the embodiment of the present application, the first movable push rod 102 and the second movable push rod can be electric push rods. The electric push rod is a device that achieves telescopic adjustment by being driven by an electric motor. The electric push rod is used for adjustment, which is easy to operate and has high adjustment accuracy.

[0067] In some embodiments, the chest adjustment fixing assembly 406 is movably connected to the adjustment plate 404 through the third connecting plate 405. The chest adjustment fixing assembly 406 includes an adjustment sleeve 4061, a connecting sleeve 4064 and a plurality of chest adjustment fixing blocks 4062. The adjustment sleeve 4061 is sleeved on the outer periphery of the connecting sleeve 4064. A plurality of first connecting columns 4065 are provided below the connecting sleeve 4064. A connecting hole 4066 is provided in the middle of the chest adjustment fixing block 4062. The connecting sleeve 4064 and the chest adjustment fixing block 4062 are connected together through the first connecting columns 4065 and the connecting hole 4066. The adjusting sleeve 4061 is provided with a plurality of arc tracks, the second connecting column 4067 is arranged in the arc track of the adjusting sleeve 4061, and a third movable push rod 4063 is arranged under the adjusting sleeve 4061, and the movable end of the third movable push rod 4063 is fixedly connected to one of the chest adjustment fixing blocks 4062, and the third movable push rod 4063 is used to push the movement of the chest adjustment fixing block 4062 to realize the opening size of the chest adjustment fixing block 4062, so that the chest adjustment fixing assembly can be adjusted according to the position and size of the chest part to adapt to different people, thereby improving the comfort of the patient.

[0068] In an embodiment of the present application, a chest adjustment and fixing assembly includes a plurality of chest adjustment and fixing blocks, a connecting hole is provided on the chest adjustment and fixing block, a first connecting column is arranged in the connecting hole of the chest fixing and adjusting block, thereby connecting the plurality of chest adjustment and fixing blocks together, a second connecting column is provided at the end of the chest adjustment and fixing block, the second connecting column is arranged in the arc track of the adjusting sleeve, a third movable push rod is provided below the adjusting sleeve, one end of the third movable push rod is connected to the adjusting sleeve, and the other end is connected to one of the chest adjustment and fixing blocks, when in use, by adjusting the push-out and retraction of the third movable push rod, the chest adjustment block is pushed to move along the arc track of the adjusting sleeve, so as to realize the control of the opening size of the chest adjustment and fixing block through the adjustment of the movable push rod, thereby realizing the chest adjustment and fixing assembly, which can be adjusted according to the position and size of the chest part of different patients to adapt to different people, thereby improving the comfort of the patient, making the patient's body position more comfortably maintained and stably fixed, thereby reducing the positioning error, so that the patient's body position remains unchanged during radiotherapy, thereby improving the treatment effect.

[0069] It should be noted that both the third connecting plate 405 and the third movable push rod 4063 can adopt electric push rods. On the one hand, the setting of the electric push rod can help control the chest adjustment fixing component to adjust according to the position and size of the chest part of different patients. On the other hand, the electric push rod is used for adjustment, which is easy to operate and has high adjustment accuracy, which helps to reduce positioning errors and improve repeatability.

[0070] In some embodiments, a spring 4068 is provided inside the chest adjustment fixing block 4062. Through the design of the spring, the chest adjustment fixing block can be raised and lowered according to the gravity it receives and the different body shapes of the patient, and reset when the patient leaves, so that the chest adjustment fixing block can be compressed and reset according to the patient's physical condition, avoiding squeezing the patient's chest, improving the patient's comfort during radiotherapy, and making the patient's position more comfortably maintained and stably fixed, thereby reducing positioning errors and allowing the patient's position to remain unchanged during radiotherapy, thereby improving the treatment effect.

[0071] In some embodiments, two adjustment covers 7 are provided above the chest and abdomen adjustment and fixing part 4. The adjustment cover 7 is used to adapt to different physical conditions and different body positions of patients when opened, and to fix the radiotherapy position of patients with chest and abdominal tumors. When closed, it is used as an ordinary bed.

[0072] The embodiment of the present application is a body position fixation device for chest and abdominal tumor radiotherapy, which is specifically used in the body position fixation of chest and abdominal tumor patients undergoing radiotherapy. The specific working principle is as follows: First, open the adjustment cover 7 and let the patient lie on the bed of the radiotherapy bed 1; Next, the fixing positions of the head fixing part 2, the body fixing part 3 and the chest and abdomen adjusting part 4 are adjusted according to the patient's body size, shape and body position requirements; For example, when the patient is in a supine position, the patient's head is resting on the head cover 201 of the head fixing part 2, and the movable push rod 202 is adjusted according to the patient's head shape to fix the patient's head according to the patient's radiotherapy position and head shape; the first movable push rod 102 and the second movable push rod 103 are adjusted according to the patient's back shape to push the abdomen adjustment and fixing component 401 to extend and retract and the adjustment plate 404 to rise and fall, thereby changing the connection form of the abdomen adjustment and fixing component 401, the first connecting plate 402, the second connecting plate 403 and the adjustment plate 404, so that the chest and abdomen adjustment part 404 The device can adapt to the patient's body shape and fix the patient. The motor movement is controlled according to the patient's body position to drive the gear to rotate, and the adjusting rod 305 is driven to move left and right, thereby pressing the second telescopic rod at the bottom to drive the concentration of the first telescopic rod 302 connected to the other end of the connecting rod 303, thereby pushing the clamping plate 301 to clamp and fix the patient's body stably, and finally realize the present application of a chest and abdominal tumor radiotherapy position fixing device that can stably fix the patient's position according to the patient's body shape and different body positions, improve the repeatability of the patient's position during radiotherapy, avoid positioning errors, and improve the treatment effect. For another example, when the patient is in a prone position, the patient's face is resting on the head cover 201 of the head fixing part 2. The movable push rod is adjusted according to the patient's head shape. The movable push rod 202 is adjusted according to the patient's radiotherapy position and head shape to fix the patient's head. The design of the movable push rod 202 leaves a certain space in front of the patient's face so that the patient has room to breathe when in a prone position. The first movable push rod 102 and the second movable push rod 103 are adjusted according to the patient's chest and abdominal shape to push the abdomen adjustment and fixing component 401 to retract and the adjustment plate 404 to rise and fall, thereby changing the connection form of the abdomen adjustment and fixing component 401, the first connecting plate 402, the second connecting plate 403 and the adjustment plate 404, so that the chest and abdomen adjustment part 4 adapts to the patient's body shape at this time, and the two chest adjustment and fixing components are adjusted through the third connecting plate 405. The position of 406 is adjusted by pushing out and retracting the third movable push rod 4067, pushing the chest adjustment block to move along the arc track of the adjustment sleeve, controlling the opening size of the chest adjustment fixing block, thereby realizing the chest adjustment fixing assembly, which can be adjusted and fixed according to the position and size of the chest parts of different patients, and finally controlling the movement of the motor to drive the gear to rotate according to the patient's body position, driving the adjustment rod 305 to move left and right, thereby pressing the second telescopic rod at the bottom to drive the concentration of the first telescopic rod 302 connected to the other end of the connecting rod 303, thereby pushing the clamping plate 301 to clamp and fix the patient's body stably, and finally realizing the present application of a chest and abdominal tumor radiotherapy position fixing device to stably fix the patient's position according to the patient's body shape and different body positions, thereby improving the repeatability of the patient's position during radiotherapy, avoiding positioning errors, and improving the treatment effect.

[0073] Then, after fixing the patient's position and checking the fixation effect, radiotherapy is performed. Finally, after the radiotherapy is finished and the patient with chest and abdominal tumors is released from the position fixation, the adjustment cover 7 is closed. At this time, the radiotherapy bed 1 can be used as an ordinary bed.

[0074] The present invention and its embodiments are described below. This description is not restrictive and the actual embodiments are not limited to the following. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. A body position fixation device for radiotherapy of thoracic and abdominal tumors, comprising a radiotherapy bed (1) and a head fixation part (2), a body fixation part (3) and a thoracic and abdominal adjustment fixation part (4) arranged on the radiotherapy bed (1), characterized in that: The body fixing part (3) is arranged on the left and right sides of the chest and abdomen adjustment fixing part (4), and the chest and abdomen adjustment fixing part (4) is used to fix the radiotherapy position of the chest and abdomen tumor patient in cooperation with the head fixing part (2) and the body fixing part (3) according to different body positions and different body conditions of the chest and abdomen tumor patient.

2. A body position fixation device for chest and abdominal tumor radiotherapy as claimed in claim 1, characterized in that: A cavity is provided at the upper part of the radiotherapy bed (1); a chest and abdomen adjustment and fixing part (4) is provided in the cavity of the radiotherapy bed (1); the chest and abdomen adjustment and fixing part (4) comprises an abdomen adjustment and fixing component (401), a first connecting plate (402), a second connecting plate (403), an adjustment plate (404), a third connecting plate (405), and two chest adjustment and fixing components (406); the abdomen adjustment component (401), the first connecting plate 402, the second connecting plate (403), and the adjustment plate (404) are connected in sequence; the adjustment plate (404) is provided with two placement holes; the chest adjustment and fixing component (406) is provided in the placement holes of the adjustment plate (404), and is connected to the adjustment plate (404) via the third connecting plate (405).

3. A body position fixation device for chest and abdominal tumor radiotherapy as claimed in claim 2, characterized in that: A second movable push rod (103) is provided on the left side of the radiotherapy bed (1), and a movable push plate (104) is connected to the right side of the second movable push rod (103). The first connecting member (101) is provided on the movable push plate (104). The second movable push rod (103) is used to push the movable push plate (104) to change its position, thereby achieving the extension and contraction of the abdomen adjustment component (401). Two first movable push rods (102) are provided on the right side of the radiotherapy bed (1). The first movable push rods (102) are located below the adjustment plate (404). The first movable push rods (102) are used to push the adjustment plate (404) to rise and fall.

4. A body position fixation device for chest and abdominal tumor radiotherapy as claimed in claim 2, characterized in that: The abdomen adjustment component (401) comprises a plurality of abdomen adjustment rods (4012) and a plurality of retractable adjustment members (4013). The plurality of abdomen adjustment rods (4012) are arranged in parallel, and a plurality of retractable adjustment members (4013) are arranged at intervals between every two abdomen adjustment rods (4013).

5. A body position fixation device for chest and abdominal tumor radiotherapy as claimed in claim 2, characterized in that: The chest adjustment and fixing assembly (406) comprises an adjustment sleeve (4061), a connecting sleeve (4064) and a plurality of chest adjustment and fixing blocks (4062); the adjustment sleeve (4061) is sleeved on the outer periphery of the connecting sleeve (4064); a plurality of first connecting columns (4065) are provided below the connecting sleeve (4064); a connecting hole (4066) is provided in the middle of the chest adjustment and fixing block (4062); the connecting sleeve (4064) and the chest adjustment and fixing block (4062) are connected together via the first connecting columns (4065) and the connecting hole (4066); the adjustment sleeve (4061) is provided with a plurality of arc tracks; and the second connecting columns (4067) are provided in the arc tracks of the adjustment sleeve (4061).

6. A body position fixation device for chest and abdominal tumor radiotherapy as claimed in claim 4, characterized in that: A third movable push rod (4063) is provided below the adjustment sleeve (4061), and a movable end of the third movable push rod (4063) is fixedly connected to one of the chest adjustment fixing blocks (4062).

7. A body position fixation device for chest and abdominal tumor radiotherapy as claimed in claim 4, characterized in that: A spring (4068) is provided inside the chest adjustment fixing block (4062).

8. The device for fixing the position of chest and abdominal tumors for radiotherapy according to claim 1, characterized in that: The head fixing part (2) comprises a head cover (201) and a movable push rod (202) arranged in a central hole of the head cover (201).

9. The body position fixation device for chest and abdominal tumor radiotherapy according to claim 1, characterized in that: A motor (5) is provided at the bottom of the radiotherapy bed (1), and a gear (501) is connected to the bottom of the motor. The body fixing part (3) comprises a clamping plate (301), a first telescopic rod (302), a connecting rod (303), a second telescopic rod (304) and an adjusting rod (305); the connecting rod (303) is arranged in a connecting sleeve (6) on the side of the radiotherapy bed (1), the first telescopic rod (302) and the second telescopic rod (304) are respectively arranged at two ends of the connecting rod (303), the clamping plate (301) is arranged at the end of the first telescopic rod (302), the adjusting rod (305) is arranged at the end of the second telescopic rod (304), and the adjusting rod (305) is provided with a rack, and the rack of the adjusting rod (305) is meshed with the gear (501).

10. The body position fixation device for chest and abdominal tumor radiotherapy according to claim 1, characterized in that: Two adjustment cover plates (7) are provided above the chest and abdomen adjustment fixing portion (1).

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