Radiotherapy body position fixing frame

Abstract

The invention relates to the technical field of radiotherapy auxiliary equipment, and discloses a radiotherapy body position fixing frame which comprises a base, the top of the base is rotatably connected with a rotating disc, the rear portion of the upper end of the rotating disc is fixedly provided with a vertical plate, the left end and the right end of the vertical plate are each provided with a plurality of body membrane fixing grooves, the front end of the vertical plate is slidably connected with a fixing mechanism, and the rear end of the vertical plate is provided with a sliding groove. The rear portion of the fixing mechanism is slidably connected into the sliding groove, a first forward and reverse motor is fixedly installed at the upper end of the vertical plate, the output end of the first forward and reverse motor is fixedly connected with a first lead screw, the first lead screw is movably installed in the sliding groove, a storage groove is formed in the lower portion in the vertical plate, and a sitting and standing mechanism is arranged in the storage groove. According to the radiotherapy body position fixing frame, through standing position or sitting position radiotherapy, the comfort degree and treatment precision of a patient are improved, the fixing frame is suitable for various tumor types, meanwhile, the device can flexibly adjust the body position, comprehensive fixation is provided, movement and psychological pressure of the patient are reduced, and more efficient, accurate and comfortable radiotherapy experience is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of radiotherapy auxiliary equipment, and in particular to a radiotherapy body position fixing frame. Background Art

[0002] Traditional supine radiotherapy has numerous drawbacks in clinical practice, significantly impacting the patient experience and treatment outcomes. First, prolonged recumbency can cause discomfort, particularly in the elderly, children, or those with specific medical conditions (e.g., respiratory illnesses). This can increase pain at pressure points and induce involuntary movements, reducing treatment accuracy. Second, traditional supine radiotherapy has limited adaptability and cannot meet the optimal treatment angle requirements for all tumor types or lesion locations. For example, tumors in the chest, abdomen, and certain locations of the head require a more natural posture for improved precision. Furthermore, prolonged supine radiotherapy can place psychological stress on patients, leading to anxiety and fear. This psychological burden, especially in the setting of frequent radiotherapy sessions, not only impacts the patient experience but can also indirectly affect treatment outcomes. Finally, traditional supine positioning equipment typically occupies a large space and lacks flexibility in adjusting patient position, limiting space utilization and workflow efficiency in radiotherapy rooms. Therefore, we propose a radiotherapy position fixation frame. Summary of the Invention

[0003] The main purpose of the present invention is to provide a radiotherapy body position fixation frame, which can effectively solve the problems in the background technology.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A radiotherapy body position fixing frame comprises a base, the top of the base is rotatably connected to a turntable, the upper rear end of the turntable is fixedly installed with a vertical plate, the left and right ends of the vertical plate are provided with a plurality of body membrane fixing grooves, the front end of the vertical plate is slidably connected to a fixing mechanism, the rear end of the vertical plate is provided with a slide groove, the rear end of the fixing mechanism is slidably connected in the slide groove, the upper end of the vertical plate is fixedly installed with a No. 1 forward and reverse motor, the output end of the No. 1 forward and reverse motor is fixedly connected with a No. 1 screw rod, the No. 1 screw rod is movably installed in the slide groove, and the No. 1 screw rod is threadedly connected to the rear end of the fixing mechanism, a storage groove is provided at the lower inner part of the vertical plate, and a sitting mechanism is provided in the storage groove; The fixing mechanism includes a supporting armrest, which is a U-shaped structure and is slidably sleeved on the outside of the vertical plate. The front end of the middle part of the supporting armrest is fixedly connected to a slider, which is slidably connected in the slide groove and threadedly connected to the No. 1 screw rod. A lumbar support pad is fixedly connected to the inside of the supporting armrest, and the lumbar support pad is slidably connected to the front end of the vertical plate. The upper end of the lumbar support pad is fixedly connected to the left and right sides of the lumbar support pad, and the upper end of the lumbar support pad is detachably mounted with a head fixing part through two clamping columns.

[0005] As a further improvement of the above solution, the outer surface of the support armrest is fixedly connected to two symmetrically arranged sliding bars, and both of the sliding bars are slidably connected to hand positioning parts. The upper end of the support armrest is fixedly connected to two magnetic strips used in conjunction with the hand positioning parts.

[0006] As a further improvement of the above solution, the hand positioning member includes a movable sleeve, which is slidably connected to the slide bar. The top of the movable sleeve is rotatably connected to an arc-shaped fixed plate, and the bottom of the arc-shaped fixed plate is fixedly connected to a magnet magnetically connected to the magnetic strip on the side away from the movable sleeve.

[0007] As a further improvement of the above solution, a plurality of screw holes are provided at equal intervals on the outer surface of the slide bar, and a positioning screw rod threadedly connected to the screw hole is inserted through the movable sleeve.

[0008] As a further improvement of the above scheme, the head fixing part includes a support plate, the lower end of the support plate has two clamping holes that are clamped with the clamping column, the support plate is fixedly installed on the upper end of the waist support pad through the two clamping holes, the upper front end of the support plate is provided with a connecting groove, a No. 2 screw rod is movably installed in the connecting groove, the upper end of the No. 2 screw rod passes through the upper end of the support plate and is fixedly connected to the turning handle, the head support frame is slidably connected in the connecting groove, and the rear part of the head support frame is threadedly connected to the No. 2 screw rod.

[0009] As a further improvement of the above-mentioned solution, the front part of the head support frame is an arc-shaped structure, and the left and right parts of the head support frame are both threadedly connected with adjusting screws, and the two adjusting screws are symmetrically arranged, and the opposite ends of the two adjusting screws are movably connected with clamping blocks, and the ends of the adjusting screws away from the clamping blocks are fixedly connected with knobs.

[0010] As a further improvement of the above scheme, the front end side of the head support frame is movably connected to a rotating frame through a hinge, the middle part of the front end of the rotating frame is threadedly connected with an adjustment screw No. 1, the rear end of the adjustment screw No. 1 is movably installed with a support block, the middle part of the support block is movably connected with an adjustment screw No. 2, and the rear end of the No. 2 adjustment screw is provided with a gear support.

[0011] As a further improvement of the above solution, the front end surface of the lumbar support pad is designed as an arc-shaped structure, and two fixing straps are provided on the lumbar support pad, and the two fixing straps are distributed up and down.

[0012] As a further improvement of the above solution, the sitting mechanism includes a mounting rod, which is movably installed in the storage slot. A seat plate is fixedly connected to the mounting rod, and the seat plate is movably connected in the storage slot. The upper end surface of the seat plate is fixedly connected to a cushion.

[0013] As a further improvement of the above-mentioned solution, a mounting bracket is fixedly installed on one side of the vertical plate, a No. 2 forward and reverse motor is fixedly installed inside the mounting bracket, the output end of the No. 2 forward and reverse motor is fixedly connected to a driving gear, one end of the mounting rod passes through the vertical plate and is fixedly connected to a transmission gear, and the transmission gear and the driving gear are located on the same side and mesh with each other.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts standing or sitting radiotherapy methods, which can adapt to various types of tumors and lesions, and is not limited to traditional supine treatment. For example, when tumors in the chest, abdomen and certain parts of the head need to be radiotherapy, sitting or standing positions can be adopted, allowing patients to receive treatment in a more natural posture. This design not only improves the accuracy of treatment, but also expands the application range of the equipment, so that different types of tumors can be effectively treated.

[0015] 2. The present invention utilizes adjustable fixing and sitting mechanisms to achieve flexible switching between standing and sitting positions. The second forward and reverse motor activates the transmission gear to unfold the seat, while the first forward and reverse motor adjusts the height of the fixing mechanism to accommodate different body positions. This multi-position option greatly expands the device's application range, provides more personalized treatment options, and enables multiple uses. This flexible design not only facilitates operation for medical staff but also improves device utilization and reduces the inconvenience and time wasted associated with changing equipment.

[0016] 3. This invention achieves comprehensive patient fixation through the design of the fixation mechanism, utilizing the head fixator, the lumbar support cushion's fixing straps, and the hand positioning members on the support armrests. First, the lumbar support cushion and its fixing straps provide initial stable support for the patient. Second, the head support frame's height can be fine-tuned by rotating the handle to ensure optimal head fixation. Finally, the hand positioning members, through the design of movable sleeves and magnetic strips, ensure that the hands are firmly fixed. These sophisticated design features work together to ensure patient stability throughout treatment and reduce the possibility of involuntary movement.

[0017] 4. The height of the head support frame on the head mount of this invention can be precisely adjusted, as can the position of the hand positioning members on the support armrests, to accommodate patients of varying heights and ensure optimal fixation. This personalized adjustment not only reduces patient anxiety but also provides a more natural posture, effectively alleviating patient tension. This comfortable positioning and stable fixation design are particularly beneficial for patients who require frequent radiotherapy treatments, significantly enhancing their treatment experience, fostering a positive mental state, and indirectly improving treatment outcomes.

[0018] 5. This device boasts a compact structure and small footprint. Compared to traditional supine radiotherapy equipment, this device utilizes a compact design and automated control system. By activating the second forward and reverse motor to quickly deploy or retract the sitting mechanism and adjust the height of the fixed mechanism when necessary, the entire device is more convenient and efficient to operate, achieving greater space utilization. Furthermore, the automated control functions of the first and second forward and reverse motors simplify the operating process, reduce the time and cost of manual adjustments, and further improve work efficiency and service quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of a radiotherapy position fixation frame of the present invention in a sitting or standing position from a first perspective; Figure 2 This is a schematic diagram of a second viewing angle of a radiotherapy body position fixation frame of the present invention in a sitting or standing position; Figure 3 This is a schematic diagram of a radiotherapy body position fixation frame according to the present invention from a standing perspective; Figure 4 This is a structural schematic diagram of a sitting and standing mechanism of a radiotherapy position fixing frame of the present invention; Figure 5 This is a schematic diagram of the overall structure of a fixing mechanism of a radiotherapy body position fixing frame of the present invention; Figure 6 This is a partial structural diagram of a fixing mechanism of a radiotherapy body position fixing frame of the present invention; Figure 7 This is a schematic structural diagram of a head fixing member of a radiotherapy body position fixing frame according to the present invention; Figure 8 The figure is a schematic structural diagram of a hand positioning component of a radiotherapy body position fixation frame according to the present invention.

[0021] In the figure: 1, base; 101, turntable; 2, vertical plate; 3, slide; 4, fixing mechanism; 41, support armrest; 42, slider; 43, waist support pad; 44, clamping column; 45, head fixing piece; 451, support plate; 452, clamping hole; 453, connecting groove; 454, No. 2 screw; 455, turning handle; 456, head support frame; 457, adjusting screw; 458, knob; 459, clamping block; 460, rotating frame; 461, No. 1 adjustment screw; 462, support block; 463, Adjustment screw No. 2; 464, tooth support; 46, fixing strap; 47, slide bar; 471, screw hole; 48, hand positioning piece; 481, movable slide; 482, positioning screw; 483, arc-shaped fixing plate; 484, magnet; 49, magnetic strip; 5, storage slot; 6, sitting mechanism; 61, mounting rod; 62, seat plate; 63, transmission gear; 64, seat cushion; 65, forward and reverse motor No. 2; 66, driving gear; 7, forward and reverse motor No. 1; 8, screw No. 1; 9, mounting bracket; 10, body membrane fixing slot. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] The technical solution of the present invention is further described below with reference to the accompanying drawings.

[0026] like Figure 1-8As shown, a radiotherapy position fixing frame includes a base 1, the top of the base 1 is rotatably connected to a turntable 101, the upper rear end of the turntable 101 is fixedly installed with a vertical plate 2, and a plurality of body membrane fixing grooves 10 are provided at both left and right ends of the vertical plate 2. The front end of the vertical plate 2 is slidably connected to a fixing mechanism 4, and a slide groove 3 is opened at the rear end of the vertical plate 2. The rear part of the fixing mechanism 4 is slidably connected in the slide groove 3. The upper end of the vertical plate 2 is fixedly installed with a No. 1 forward and reverse motor 7, and the output end of the No. 1 forward and reverse motor 7 is fixedly connected with a No. 1 screw rod 8, which is movably installed in the slide groove 3, and the No. 1 screw rod 8 is threadedly connected to the rear part of the fixing mechanism 4. A storage groove 5 is opened at the lower inner part of the vertical plate 2, and a sitting mechanism 6 is provided in the storage groove 5.

[0027] In this embodiment, the fixing mechanism 4 includes a support armrest 41, which is a U-shaped structure and is slidably sleeved on the outside of the vertical plate 2. The front end of the middle part of the support armrest 41 is fixedly connected to a slider 42, and the slider 42 is slidably connected in the slide groove 3 and is threadedly connected to the No. 1 screw rod 8. A lumbar support pad 43 is fixedly connected to the inside of the support armrest 41, and the lumbar support pad 43 is slidably connected to the front end of the vertical plate 2. The upper end of the lumbar support pad 43 is fixedly connected to the left and right sides with clamping columns 44, and the upper end of the lumbar support pad 43 is detachably installed with a head fixing part 45 through two clamping columns 44.

[0028] Through the above scheme: the height of the fixing mechanism 4 is adjusted by the No. 1 forward and reverse motor 7, so as to achieve precise adjustment of the height of the support armrest 41 and its attached lumbar support pad 43. At the same time, when used in conjunction with the sitting mechanism 6, it can adapt to various types of tumors and lesions, and is not limited to traditional supine treatment. For example, when tumors in certain parts of the chest, abdomen and head require radiotherapy, a sitting or standing position can be adopted, allowing the patient to receive treatment in a more natural posture. This design not only improves the accuracy of the treatment, but also expands the application range of the equipment, so that different types of tumors can be effectively treated.

[0029] In this embodiment, the outer surface of the supporting armrest 41 is fixedly connected to two symmetrically arranged sliding bars 47, and the two sliding bars 47 are slidably connected to a hand positioning piece 48, and the upper end of the supporting armrest 41 is fixedly connected to two magnetic strips 49 used in conjunction with the hand positioning piece 48; the hand positioning piece 48 includes a movable sleeve 481, which is slidably connected to the sliding bar 47, and the top of the movable sleeve 481 is rotatably connected to an arc-shaped fixed plate 483, and the bottom of the arc-shaped fixed plate 483 is fixedly connected to a magnet 484 magnetically connected to the magnetic strip 49 on the side away from the movable sleeve 481; a plurality of screw holes 471 are equidistantly provided on the outer surface of the sliding bar 47, and a positioning screw 482 threadedly connected to the screw hole 471 is inserted through the movable sleeve 481.

[0030] Through the above scheme: by adjusting the positioning screw 482, the movable sleeve 481 can be fixed at any position on the slide bar 47, the arc-shaped fixing plate 483 is connected to the movable sleeve 481 through the rotating connection point at the top, and a magnet 484 is installed on the side of the bottom away from the movable sleeve 481, which can fit tightly with the magnetic strip 49 at the upper end of the support armrest 41 to ensure that the hand is stable and motionless, so that the position of the hand positioning part 48 on the support armrest 41 can be accurately adjusted to meet the needs of patients of different heights and ensure optimal fixation, which can not only reduce the patient's sense of uneasiness, but also provide a more natural posture, effectively alleviating the patient's tension.

[0031] In this embodiment, the head fixing part 45 includes a support plate 451, and the lower end of the support plate 451 is provided with two clamping holes 452 that are clamped with the clamping column 44. The support plate 451 is fixedly installed on the upper end of the waist support pad 43 through the two clamping holes 452. The upper front end of the support plate 451 is provided with a connecting groove 453, and a No. 2 screw rod 454 is movably installed in the connecting groove 453. The upper end of the No. 2 screw rod 454 passes through the upper end of the support plate 451 and is fixedly connected to the turning handle 455. A head support frame 456 is slidably connected in the connecting groove 453, and the rear part of the head support frame 456 is threadedly connected to the No. 2 screw rod 454; the front part of the head support frame 456 is an arc structure, and the left and right parts of the head support frame 456 are both threadedly connected to the adjusting screw rod 457, and the two adjusting screw rods 457 are screwed together. The joint screw rods 457 are symmetrically arranged, and the opposite ends of the two adjusting screw rods 457 are movably connected to the clamping blocks 459, and the ends of the adjusting screw rods 457 away from the clamping blocks 459 are fixedly connected to the knobs 458; the front end surface of the lumbar support pad 43 is designed as an arc-shaped structure, and two fixing straps 46 are provided on the lumbar support pad 43, and the two fixing straps 46 are distributed up and down; the front end side of the head support frame 456 is movably connected to the rotating frame 460 through a hinge, and the middle part of the front end of the rotating frame 460 is threadedly connected to the No. 1 adjustment screw 461, and the rear end of the No. 1 adjustment screw 461 is movably installed with a support block 462, and the middle part of the support block 462 is movably connected to the No. 2 adjustment screw 463, and the rear end of the No. 2 adjustment screw 463 is provided with a tooth support 464.

[0032] The above solution, utilizing the head fixator 45, the fixing straps 46 on the lumbar support pad 43, and the hand positioning members 48 on the support armrests 41, achieves comprehensive patient immobilization. First, the lumbar support pad 43 and its fixing straps 46 provide initial stable support for the patient. Second, rotating the handle 455 fine-tunes the height of the head support frame 456 to ensure optimal head fixation. Finally, the hand positioning member 48, through its sliding sleeve 481 and magnetic strips 49, secures the hand in place. These sophisticated design features work together to ensure patient stability throughout treatment, reducing the possibility of involuntary movement.

[0033] In this embodiment, the sitting mechanism 6 includes a mounting rod 61, which is movably mounted in the storage slot 5. A seat plate 62 is fixedly connected to the mounting rod 61, and the seat plate 62 is movably connected in the storage slot 5. The upper end surface of the seat plate 62 is fixedly connected to a seat cushion 64; a mounting frame 9 is fixedly mounted on one side of the vertical plate 2, and a No. 2 forward and reverse motor 65 is fixedly mounted in the mounting frame 9, and the output end of the No. 2 forward and reverse motor 65 is fixedly connected to a driving gear 66; one end of the mounting rod 61 passes through the vertical plate 2 and is fixedly connected to a transmission gear 63, and the transmission gear 63 and the driving gear 66 are located on the same side and mesh with each other.

[0034] Through the above solution, the second forward and reverse motor 65 on the sitting mechanism 6 is activated, and the output end of the second forward and reverse motor 65 drives the driving gear 66 to rotate. The driving gear 66 engages with the transmission gear 63, driving the transmission gear 63 to rotate, thereby expanding the mounting rod 61 outward, pushing the seat plate 62 out of the storage slot 5 and locking it in the appropriate position. Conversely, the second forward and reverse motor 65 on the sitting mechanism 6 is activated in reverse, and the seat plate 62 is stored in the storage slot 5. This allows for free switching between standing and sitting positions, making it suitable for different body posture requirements, especially for those cases requiring precise irradiation of the target area.

[0035] During specific use of this embodiment, when radiotherapy is required for a patient, a suitable body position, ie, a standing position or a sitting position, is first selected according to the patient's body shape and treatment needs. If sitting radiotherapy is chosen, the medical staff will start the No. 2 forward and reverse motor 65 on the sitting mechanism 6. The output end of the No. 2 forward and reverse motor 65 drives the driving gear 66 to rotate. The driving gear 66 engages with the transmission gear 63 to drive the transmission gear 63 to rotate, so that the mounting rod 61 is expanded outward, and the seat plate 62 is pushed out of the storage slot 5 and locked in the appropriate position. At the same time, in order to ensure that the patient can sit comfortably on the seat plate 62, the height of the fixing mechanism 4 needs to be adjusted. This step is achieved by the No. 1 forward and reverse motor 7. By starting the No. 1 forward and reverse motor 7, the No. 1 screw rod 8 can be driven to rotate, thereby driving the slider 42 to move up and down along the slide groove 3, and finally adjusting the support armrest 41 and its attached lumbar support pad 43 to the appropriate height. Once the fixing mechanism 4 is adjusted into place, the patient is fixed next. First, the lumbar support pad 43 is placed on the patient's back and is initially fixed by two fixing straps 46. Then, by rotating the handle 455, the No. 2 screw rod is used to fix the patient. The rod 454 is threadedly connected to the rear portion of the head support frame 456 to adjust the height of the head support frame 456 to meet the needs of patients of different heights. Then, the height and position of the tooth support 464 can be adjusted by using the No. 1 adjustment screw 461 and the No. 2 adjustment screw 463, so that the patient can bite the tooth support 464, and by adjusting the height of the tooth support 464 again, the patient's head elevation angle can be adjusted to facilitate the radiation of brain tumors. When the appropriate angle is adjusted, the position of the clamping block 459 can be fine-tuned by rotating the knob 458 to ensure that the head is best fixed. In order to further improve the fixing effect, the movable sleeve 481 can be fixed to any position on the slide bar 47 by adjusting the positioning screw 482. The arc-shaped fixing plate 483 is connected to the movable sleeve 481 through the rotating connection point at the top, and a magnet 484 is installed on the side of the bottom away from the movable sleeve 481, which can fit tightly with the magnetic strip 49 at the upper end of the support armrest 41 to ensure that the hand is stable and motionless. In addition, if standing radiotherapy is chosen, the medical staff will start the reverse rotation of the No. 2 forward and reverse motor 65 on the sitting mechanism 6, and store the seat board 62 into the storage slot 5. The patient stands at the front end of the standing board 2 with his back close to the lumbar support pad 43, and then fix the patient in the same fixing method as mentioned above to prevent the patient from affecting the treatment accuracy due to involuntary movements during the treatment process.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A radiotherapy position fixation frame, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a turntable (101), and a vertical plate (2) is fixedly installed at the rear of the upper end of the turntable (101), and a plurality of body membrane fixing grooves (10) are provided at both left and right ends of the vertical plate (2). The front end of the vertical plate (2) is slidably connected to a fixing mechanism (4), and a slide groove (3) is provided at the rear end of the vertical plate (2). The rear end of the fixing mechanism (4) is slidably connected in the slide groove (3). The upper end of the vertical plate (2) is fixedly installed with a No. 1 forward and reverse motor (7), and the output end of the No. 1 forward and reverse motor (7) is fixedly connected with a No. 1 screw rod (8), and the No. 1 screw rod (8) is movably installed in the slide groove (3), and the No. 1 screw rod (8) is threadedly connected to the rear of the fixing mechanism (4). A storage groove (5) is provided at the lower inner part of the vertical plate (2), and a sitting mechanism (6) is provided in the storage groove (5); The fixing mechanism (4) includes a support armrest (41), the support armrest (41) is a U-shaped structure and is slidably sleeved on the outside of the vertical plate (2), the front end of the middle part of the support armrest (41) is fixedly connected with a slider (42), the slider (42) is slidably connected in the slide groove (3) and is threadedly connected to the first screw rod (8), the support armrest (41) is fixedly connected with a lumbar support pad (43) inside, and the lumbar support pad (43) is slidably connected to the front end of the vertical plate (2), the upper end of the lumbar support pad (43) is fixedly connected with a clamping column (44) on both sides, and the upper end of the lumbar support pad (43) is detachably mounted with a head fixing member (45) through two clamping columns (44).

2. The radiotherapy body position fixation frame according to claim 1, characterized in that: The outer surface of the support armrest (41) is fixedly connected to two symmetrically arranged sliding strips (47), and the two sliding strips (47) are slidably connected to a hand positioning piece (48). The upper end of the support armrest (41) is fixedly connected to two magnetic strips (49) used in conjunction with the hand positioning piece (48).

3. The radiotherapy body position fixation frame according to claim 2, characterized in that: The hand positioning member (48) includes a movable sleeve (481), the movable sleeve (481) is slidably connected to the slide bar (47), the top of the movable sleeve (481) is rotatably connected to an arc-shaped fixed plate (483), and the bottom of the arc-shaped fixed plate (483) is fixedly connected to a magnet (484) magnetically connected to the magnetic strip (49) on a side away from the movable sleeve (481).

4. The radiotherapy body position fixation frame according to claim 3, characterized in that: The outer surface of the slide bar (47) is provided with a plurality of screw holes (471) at equal intervals, and the movable sleeve (481) is interspersed with a positioning screw (482) threadedly connected to the screw hole (471).

5. The radiotherapy body position fixation frame according to claim 1, characterized in that: The head fixing member (45) includes a support plate (451), the lower end of the support plate (451) is provided with two clamping holes (452) that are clamped with the clamping column (44), the support plate (451) is fixedly installed on the upper end of the waist support pad (43) through the two clamping holes (452), the upper front end of the support plate (451) is provided with a connecting groove (453), a second screw rod (454) is movably installed in the connecting groove (453), the upper end of the second screw rod (454) passes through the upper end of the support plate (451) and is fixedly connected to the rotating handle (455), a head support frame (456) is slidably connected in the connecting groove (453), and the rear part of the head support frame (456) is threadedly connected to the second screw rod (454).

6. The radiotherapy body position fixation frame according to claim 5, characterized in that: The front portion of the head support frame (456) is an arc-shaped structure, and the left and right portions of the head support frame (456) are both threadedly connected to an adjusting screw rod (457), and the two adjusting screw rods (457) are symmetrically arranged, and the opposite ends of the two adjusting screw rods (457) are movably connected to a clamping block (459), and the end of the adjusting screw rod (457) away from the clamping block (459) is fixedly connected to a knob (458).

7. The radiotherapy body position fixation frame according to claim 1, characterized in that: The front end of the head support frame (456) is movably connected to a rotating frame (460) through a hinge. The middle part of the front end of the rotating frame (460) is threadedly connected to a No. 1 adjustment screw (461). The rear end of the No. 1 adjustment screw (461) is movably installed with a support block (462). The middle part of the support block (462) is movably connected to a No. 2 adjustment screw (463). The rear end of the No. 2 adjustment screw (463) is provided with a tooth support (464).

8. The radiotherapy body position fixation frame according to claim 1, characterized in that: The front end surface of the waist support pad (43) is designed as an arc-shaped structure. Two fixing straps (46) are provided on the waist support pad (43), and the two fixing straps (46) are distributed up and down.

9. The radiotherapy body position fixation frame according to claim 1, characterized in that: The sitting mechanism (6) includes a mounting rod (61), the mounting rod (61) is movably mounted in the receiving groove (5), a seat plate (62) is fixedly connected to the mounting rod (61), and the seat plate (62) is movably connected in the receiving groove (5), and a seat cushion (64) is fixedly connected to the upper end surface of the seat plate (62).

10. The radiotherapy body position fixation frame according to claim 1, characterized in that: A mounting frame (9) is fixedly mounted on one side of the vertical plate (2), a second forward and reverse motor (65) is fixedly mounted in the mounting frame (9), and an output end of the second forward and reverse motor (65) is fixedly connected to a driving gear (66); one end of the mounting rod (61) passes through the vertical plate (2) and is fixedly connected to a transmission gear (63), and the transmission gear (63) and the driving gear (66) are located on the same side and mesh with each other.

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