Gynecological radiotherapy body position fixing and positioning auxiliary device

Abstract

The invention relates to the technical field of radiotherapy body position fixing, and discloses a gynecological radiotherapy body position fixing and positioning auxiliary device which comprises a bed body, and a bed plate is slidably connected to the top of the bed body; the bed further comprises a positioning assembly and a compensation assembly, the compensation assembly is divided into a mounting part, a linkage part and an execution part, the mounting part is connected with the positioning assembly to position the thoracic cavity of a patient, and the execution part is used for driving the bed board to move horizontally; the linkage part can control the execution part to output parameters according to the fluctuation of the positioning assembly caused by breathing of the patient, so that the bed board compensates the offset distance of the thoracic cavity target spot of the patient through translation. Through cooperation of the positioning assembly and the compensation assembly, the positioning plate is attached to the thoracic cavity of a patient to achieve stable fixation of the thoracic cavity body position, the compensation assembly converts thoracic cavity fluctuation caused by breathing of the patient into precise translation of the bed board, the offset distance of a thoracic cavity target spot is dynamically compensated, it is ensured that radiotherapy rays are always aligned with the target spot, and the radiotherapy precision is improved.

Description

Technical Field

[0001] This invention relates to the field of radiotherapy positioning technology, specifically to an auxiliary device for gynecological radiotherapy positioning. Background Technology

[0002] Radiotherapy is a commonly used non-invasive treatment for gynecological diseases. Its principle is to precisely irradiate diseased tissue with high-energy rays to kill cancer cells, thereby controlling the disease and improving patient prognosis. Gynecological thoracic radiotherapy primarily targets gynecological lesions near the chest cavity. During treatment, the patient is first guided to maintain a specific position, then the lesion target is precisely marked. The radiotherapy equipment is then activated, allowing the rays to continuously irradiate the target. To ensure patient stability, current technologies typically utilize positioning devices, including vacuum pads, positioning membranes, and body positioning supports, to ensure target stability during treatment and help the patient maintain the preset position throughout the radiotherapy process. This provides support for accurate target localization and the smooth execution of radiotherapy.

[0003] However, the existing technology has the following problems: Because the head of the radiotherapy equipment is usually kept fixed during the emission of radiation, the movement of the patient's chest can cause the target point to shift. This can lead to the target area being irradiated by the radiation being prone to shaking during radiotherapy, resulting in the radiation point shifting, affecting the accuracy of radiotherapy, and increasing the risk of damaging healthy tissue. Summary of the Invention

[0004] The purpose of this invention is to provide a gynecological radiotherapy positioning and fixation auxiliary device to solve the above-mentioned problems. It aims to overcome the defect that the target point will be offset due to the rise and fall of the patient's chest, which will cause the target area to shake during radiotherapy. Details are described below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a gynecological radiotherapy positioning and fixation auxiliary device, including a bed frame with a bed board slidably connected to the top of the bed frame; it also includes a positioning component and a compensation component, the compensation component being divided into an installation part, a linkage part, and an execution part. The installation part, after being connected to the positioning component, positions the patient's chest cavity, and the execution part is used to drive the bed board to translate; the linkage part can control the output parameters of the execution part according to the fluctuations of the positioning component caused by the patient's breathing, so that the bed board compensates for the distance of the target point displacement in the patient's chest cavity through translation.

[0006] Preferably, the positioning component includes a positioning plate that conforms to the patient's chest cavity, and two connecting rods are connected to the positioning plate.

[0007] Preferably, there are two mounting parts, and the two connecting rods are respectively inserted into the two mounting parts. Each mounting part includes a base and a slide rod. The base is connected to the bed board, the slide rod is slidably inserted into the base, and the connecting rod can be slidably inserted into the slide rod.

[0008] Preferably, the actuator includes a cylinder mounted on the bed, the output end of the cylinder being connected to the bed board, and a controller is provided on the cylinder to control the cylinder output by sliding.

[0009] Preferably, the linkage includes a sliding shaft, a movable plate, and a slotted block. The movable plate is horizontally slidably mounted on the side wall of the bed and is connected to a controller. The slotted block is mounted on the movable plate. The sliding shaft is connected to a sliding rod near the cylinder. The slotted block is provided with a sliding groove. The sliding shaft is slidably connected to the sliding groove of the slotted block. When the sliding shaft moves vertically, it drives the slotted block to move horizontally through the sliding groove.

[0010] Preferably, the movable plate is provided with a calibration mechanism, which includes a turntable, a slide block, and a first adjusting screw. The slot block is provided with a rotating shaft, and the slot block is rotatably connected to the movable plate through the rotating shaft. The turntable is connected to the end of the rotating shaft away from the slot block, and a pin is connected to the turntable. The pin is offset from the center of the turntable. The slide block is horizontally slidably connected to the movable plate. The first adjusting screw is rotatably mounted on the movable plate and is threadedly connected to the slide block. The slide block is provided with a vertical sliding groove, and the pin is slidably connected to the vertical sliding groove. When the slide block moves horizontally, it can drive the turntable and the slot block to rotate through the pin.

[0011] Preferably, the turntable is equipped with a pointer, and the movable plate is provided with a set of scales. The pointer and the scales work together to display the current angle of the slot block.

[0012] Preferably, the bottom of the slide bar is connected to a limiting shaft, the limiting shaft is horizontally set, and a limiting rod is hinged on the base, the limiting rod can abut against the bottom of the limiting shaft to lock the slide bar.

[0013] Preferably, a positioning screw is threaded onto the slide rod, and an anti-slip plate is connected to the connecting rod. The positioning screw can abut against the anti-slip plate after the connecting rod is inserted into the positioning screw.

[0014] Preferably, the bed board is equipped with an arm support mechanism and a speaker. The arm support mechanism includes a support plate, a nut seat, and a second adjusting screw. The support plate is hinged to the bed board, the nut seat is horizontally slidably connected to the bed board, the second adjusting screw is rotatably mounted on the bed board, and the second adjusting screw is threadedly connected to the nut seat. A connecting rod is hinged between the nut seat and the support plate. Two handles are installed on the support plate, and the speaker is used to play breathing rhythm prompts.

[0015] The beneficial effects are: 1. This gynecological radiotherapy positioning and fixation auxiliary device, through the cooperation of the positioning component and the compensation component, enables the positioning plate to fit against the patient's chest cavity to achieve stable fixation of the chest cavity position and limit excessive chest cavity movement. Then, through the coordinated work of the installation part, linkage part and execution part of the compensation component, the chest cavity fluctuation caused by the patient's breathing is converted into precise translation of the bed board, dynamically compensating for the offset distance of the chest cavity target point, ensuring that the radiotherapy rays are always aligned with the target point, effectively improving the accuracy of radiotherapy, and avoiding the radiation from deviating from the target point and affecting the treatment effect.

[0016] 2. This gynecological radiotherapy positioning and fixing auxiliary device, through the setting of the calibration mechanism, enables medical staff to precisely adjust the angle of the slot block by rotating the first adjusting screw according to the respiratory characteristics of different patients, thereby adjusting the translation amount and direction of the bed board, adapting to the differences in target point offset of different patients, improving the versatility and compensation accuracy of the device, and at the same time facilitating medical staff to quickly calibrate and call up angle parameters, improving operational efficiency.

[0017] 3. This gynecological radiotherapy positioning and fixation auxiliary device, through the setting of the arm support mechanism, allows medical staff to adjust the angle of the support plate by rotating the second adjusting screw, and with the grip, achieve comfortable fixation of the patient's arms, avoiding body movement caused by arm discomfort and thus preventing target deviation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the positioning component structure of the present invention; Figure 3 This is a schematic diagram of the compensation component structure of the present invention; Figure 4 This is a schematic diagram of the slot block structure of the present invention; Figure 5 This is a schematic diagram of the cylinder structure of the present invention; Figure 6 This is a schematic diagram of the calibration mechanism structure of the present invention; Figure 7 This is a schematic diagram of the limiting rod structure of the present invention; Figure 8 This is a schematic diagram of the positioning plate structure of the present invention; Figure 9 This is a schematic diagram of the arm support mechanism of the present invention; Figure 10 This is a schematic diagram of the nut seat structure of the present invention.

[0020] The annotations in the attached figures are explained as follows: 1. Bed frame; 2. Bed board; 3. Positioning assembly; 31. Positioning plate; 32. Connecting rod; 33. Anti-slip plate; 4. Compensation component; 41. Base; 42. Slide rod; 43. Slide shaft; 44. Movable plate; 45. Groove block; 46. Cylinder; 461. Controller; 47. Limit shaft; 48. Limit rod; 49. Positioning screw; 5. Calibration mechanism; 51. Turntable; 52. Pointer; 53. Pin; 54. Slide; 55. First adjusting screw; 6. Arm support mechanism; 61. Support plate; 62. Handle; 63. Nut seat; 64. Connecting rod; 65. Second adjusting screw; 7. Audio equipment. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0023] Throughout this specification, references to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in one embodiment" or "in another embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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 orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0026] Please see Figure 1 - Figure 8 In one embodiment: A gynecological radiotherapy positioning and fixation auxiliary device includes a bed 1, a bed board 2 slidably connected to the top of the bed 1, and a drive mechanism matching the radiotherapy equipment, so that the bed 1 can be moved under the radiotherapy equipment for radiotherapy. The bed board 2 and the bed 1 are slidably connected by a moving module and pulleys.

[0027] Furthermore, please refer to Figure 1 - Figure 3 It also includes a positioning component 3 and a compensation component 4. The positioning component 3 includes a positioning plate 31 that can conform to the patient's chest cavity. Two connecting rods 32 are connected to the positioning plate 31. The positioning component 3 is the core component for fixing the patient's chest cavity position. The compensation component 4 is used to dynamically compensate for the displacement of the chest cavity target point caused by the patient's breathing. The two work together to ensure that the patient's position is fixed and to avoid the impact of respiratory motion on the accuracy of radiotherapy. The positioning plate 31 adopts an arc-shaped structure that conforms to the contour of the human chest cavity. It can be selected according to different patient body types or customized. The positioning plate 31 can conform to the chest cavity surface, limit chest cavity movement, and thus fix the initial position of the chest cavity target point.

[0028] In addition, please see Figure 1 , Figure 2 - Figure 4The compensation component 4 is divided into an installation part, a linkage part, and an execution part. The installation part, after being connected to the positioning component 3, positions the patient's chest cavity. There are two installation parts, with two connecting rods 32 respectively inserted into the two installation parts. The installation part includes a base 41 and a sliding rod 42. The base 41 is connected to the bed board 2, and the sliding rod 42 is slidably inserted into the base 41. The connecting rod 32 can be slidably inserted into the sliding rod 42. The installation part, linkage part, and execution part of the compensation component 4 have clear division of labor and work together. The installation part is responsible for supporting the positioning component 3 and achieving initial positioning. The linkage part is responsible for converting the rise and fall of the positioning component 3 into a drive signal for the execution part. The execution part is responsible for driving the bed board 2 to translate. To compensate for target point offset, the two mounting parts correspond to two connecting rods 32, which are symmetrically mounted on the bed board 2 to ensure that the positioning component 3 is subjected to balanced force. The slide rod 42 can slide up and down along the vertical direction of the base 41 to adapt to the rise and fall of the chest cavity when the patient breathes. The connecting rod 32 is slidably inserted into the slide rod 42, and the insertion depth can be flexibly adjusted according to the height of the patient's chest cavity to ensure that the positioning plate 31 can fit tightly against the patient's chest cavity. At the same time, it is convenient to install and remove the positioning component 3. When the positioning plate 31 follows the rise and fall of the chest cavity, it will drive the connecting rod 32 to move up and down synchronously, which in turn drives the slide rod 42 to slide up and down along the base 41, realizing the synchronous movement of the positioning component 3 and the mounting part.

[0029] In addition, please see Figure 4 , Figure 5 The actuator is used to drive the bed board 2 to translate. The actuator includes a cylinder 46, which is mounted on the bed 1. The output end of the cylinder 46 is connected to the bed board 2. The cylinder 46 is equipped with a controller 461 that controls the output of the cylinder 46 by sliding. The actuator drives the bed board 2 to translate precisely according to the signal transmitted by the linkage, thereby driving the patient's body to move synchronously and compensating for the horizontal displacement of the chest cavity target point. The cylinder 46, as a power source, is fixedly mounted on the bed 1 to ensure stability during the driving process. The extension and retraction of the cylinder 46 can be precisely controlled. The extension and retraction of the output end drives the bed board 2 to slide horizontally along the bed 1. The controller 461 is slidably mounted on the cylinder 46. Its sliding position directly determines the output parameters of the cylinder 46. When the controller 461 slides due to the linkage, it will adjust the output of the cylinder 46 in real time so that the translation amount of the bed board 2 driven by the cylinder 46 is completely matched with the target point displacement, ensuring that the target point is always within the irradiation range of the radiotherapy rays and improving the accuracy of radiotherapy.

[0030] In this embodiment, please refer to Figure 3 - Figure 5The linkage unit can control the output parameters of the actuator based on the fluctuations of the positioning component 3 caused by the patient's breathing, so that the bed board 2 can compensate for the displacement of the patient's chest target point by translation. The linkage unit includes a sliding shaft 43, a movable plate 44, and a groove block 45. The movable plate 44 is horizontally slidably installed on the side wall of the bed 1 and is connected to the controller 461. The groove block 45 is installed on the movable plate 44. The sliding shaft 43 is connected to the sliding rod 42 near the cylinder 46. The groove block 45 is provided with a sliding groove. The sliding shaft 43 is slidably connected to the sliding groove of the groove block 45. When the sliding shaft 43 moves vertically, it drives the groove block 45 to move horizontally through the sliding groove. The linkage unit converts the vertical fluctuation motion of the positioning component 3 during the patient's breathing into the horizontal motion that drives the actuator. This enables dynamic compensation for target deviation. The movable plate 44 can move horizontally along the bed 1, and one end of it is fixedly connected to the controller 461, which can drive the controller 461 to slide synchronously, thereby adjusting the output parameters of the cylinder 46. The slot block 45 moves synchronously with the movable plate 44, and the slide groove on its surface is designed to be inclined. When the slide shaft 43 moves vertically up and down synchronously with the slide rod 42, the slide shaft 43 generates a horizontal force on the inner wall of the slide groove. Due to the inclined setting of the slide groove, this force will push the slot block 45 to drive the movable plate 44 to move horizontally, thereby driving the controller 461 to slide, realizing the precise control of the linkage unit on the execution unit, ensuring that the translation of the bed board 2 can follow the deviation of the thoracic target point in real time and compensate for the deviation distance.

[0031] It is worth noting that, please refer to Figure 4 , Figure 5 , Figure 6A calibration mechanism 5 is provided on the movable plate 44. The calibration mechanism 5 includes a turntable 51, a slide block 54, and a first adjusting screw 55. The slot block 45 is provided with a rotating shaft, and the slot block 45 is rotatably connected to the movable plate 44 through the rotating shaft. The turntable 51 is connected to the end of the rotating shaft away from the slot block 45. A pin 53 is connected to the turntable 51, and the pin 53 is offset from the center of the turntable 51. The slide block 54 is horizontally slidably connected to the movable plate 44. The first adjusting screw 55 is rotatably mounted on the movable plate 44 and is threadedly connected to the slide block 54. The slide block 54 is provided with a vertical sliding groove, and the pin 53 is slidably connected to the vertical sliding groove. When the slide block 54 moves horizontally, it can drive the turntable 51 and the slot block 45 to rotate through the pin 53. The core function of the calibration mechanism 5 is to calibrate the angle of the slot block 45 according to the respiratory characteristics of different patients, and then adjust the translation amount and direction of the bed board 2 to ensure that the compensation effect is adapted to different patients, improve the versatility and compensation accuracy of the device. Block 45 is rotatably connected to movable plate 44 via a rotating shaft. The rotating shaft is the rotation center of block 45, allowing block 45 to rotate flexibly around the rotating shaft, thereby changing the tilt angle of the slide and adjusting the ratio of vertical movement of slide shaft 43 to horizontal movement of block 45. Turntable 51, block 45, and rotating shaft form an integrated structure. The rotation of turntable 51 can directly drive block 45 to rotate synchronously. Pin 53 is offset from the center of turntable 51, forming an eccentric structure. It is embedded in the vertical slide of slide seat 54 and maintains a sliding connection. When slide seat 54 moves horizontally, it will apply a thrust to pin 53 through the vertical slide. Due to the eccentric setting of pin 53, the thrust will be converted into a torque that drives turntable 51 to rotate, thereby driving block 45 to rotate around the rotating shaft. The first adjusting screw 55 uses the self-locking and precision of threaded transmission to drive slide seat 54 to slide horizontally, realizing precise adjustment of the angle of block 45 and adapting to the difference in target point offset caused by different patients' breathing.

[0032] It is worth noting that, please refer to Figure 6 A pointer 52 is installed on the turntable 51, and a set of scales is provided on the movable plate 44. The pointer 52 and the scales work together to display the current angle of the slot block 45. The pointer 52 rotates synchronously with the turntable 51. The scales on the movable plate 44 are evenly distributed, corresponding to different rotation angles of the slot block 45. When the turntable 51 drives the slot block 45 to rotate, the pointer 52 will point to the corresponding scale. Medical staff can quickly read the current angle of the slot block 45 by the direction of the pointer 52, which facilitates accurate adjustment during the calibration process and improves the efficiency of operation.

[0033] It is worth mentioning that you should refer to Figure 7The bottom of the slide rod 42 is connected to a limiting shaft 47, which is horizontally set. A limiting rod 48 is hinged on the base 41. The limiting rod 48 can abut against the bottom of the limiting shaft 47 to lock the slide rod 42. The limiting shaft 47 moves up and down synchronously with the slide rod 42. The limiting rod 48 can swing horizontally around the hinge point. When the positioning component 3 needs to be installed, the slide rod 42 is raised to the highest point. At this time, the limiting shaft 47 moves above the limiting rod 48. The limiting rod 48 is moved to swing below the limiting shaft 47 and abut against the limiting shaft 47. The supporting effect of the limiting rod 48 on the limiting shaft 47 is used to temporarily lock the slide rod 42 to prevent the slide rod 42 from moving down, making it easy for medical staff to insert the connecting rod 32 into the slide rod 42 and fix it.

[0034] Furthermore, please refer to Figure 7 A positioning screw 49 is threaded onto the slide rod 42, and an anti-slip plate 33 is connected to the connecting rod 32. After the connecting rod 32 is inserted into the positioning screw 49, it can abut against the anti-slip plate 33. The positioning screw 49 is threaded onto the slide rod 42 and can move axially by rotation. The anti-slip plate 33 on the connecting rod 32 is made of anti-slip material to increase the friction with the positioning screw 49. When the connecting rod 32 is inserted into the slide rod 42 and adjusted to a suitable depth so that the positioning plate 31 fits tightly against the patient's chest cavity, the positioning screw 49 is tightened so that the end of the positioning screw 49 abuts against the anti-slip plate 33. By utilizing the self-locking of the threaded drive and the anti-slip effect of the anti-slip plate 33, the connecting rod 32 is firmly fixed in the slide rod 42, preventing the connecting rod 32 from sliding in the slide rod 42 and ensuring that the positioning plate 31 can stably fit against the patient's chest cavity.

[0035] Please see Figure 1 , Figure 9 , Figure 10 In another embodiment: The bed board 2 is equipped with an arm support mechanism 6 and a speaker 7. The arm support mechanism 6 includes a support plate 61, a nut seat 63, and a second adjusting screw 65. The support plate 61 is hinged to the bed board 2, the nut seat 63 is horizontally slidably connected to the bed board 2, and the second adjusting screw 65 is rotatably mounted on the bed board 2. The second adjusting screw 65 is threadedly connected to the nut seat 63, and a connecting rod 64 is hinged between the nut seat 63 and the support plate 61. Two handles 62 are installed on the support plate 61. The speaker 7 is used to play breathing rhythm prompts. The support plate 61 can rotate around the hinge point to support the patient's arms. Its angle can be flexibly adjusted to suit the comfort needs of different patients. Medical staff rotate the second adjusting screw 65, which drives the nut seat 63 to slide horizontally via the threaded transmission. The nut seat 63 drives the support plate 61 to rotate around the hinge point through the hinged connecting rod 64. To adjust the angle of the support plate 61, rotate the second adjusting screw 65 clockwise, and the nut seat 63 moves closer to the support plate 61, lifting the support plate 61 via the connecting rod 64 and increasing its slope. Rotate the second adjusting screw 65 counterclockwise, and the nut seat 63 moves away from the support plate 61, lowering the support plate 61 via the connecting rod 64 and decreasing its slope until it is adjusted to a comfortable angle for the patient. Two handles 62 are symmetrically installed on the support plate 61 for the patient to hold with both hands, further fixing the patient's arms and preventing the body from moving due to arm swaying. The breathing rhythm prompts played by the speaker 7 can guide the patient to maintain even and regular breathing, stabilizing chest rise and fall, facilitating the linkage to accurately capture chest rise and fall signals, and thus enabling the actuator to drive the bed board 2 for precise compensation, avoiding inaccurate compensation due to target point deviation caused by respiratory disturbances.

[0036] When using this gynecological radiotherapy positioning and fixation auxiliary device, the patient first lies on the bed board 2, with both arms raised and resting on the support plate 61. Medical staff rotate the second adjusting screw 65, which, through the threaded connection principle, drives the nut seat 63 to slide horizontally. Rotating the second adjusting screw 65 clockwise moves the nut seat 63 closer to the support plate 61, while rotating it counterclockwise moves the nut seat 63 away from the support plate 61. When the nut seat 63 moves closer to the support plate 61, it lifts the support plate 61 upward through the connecting rod 64, thereby increasing the slope of the support plate 61. Conversely, when the nut seat 63 moves away from the support plate 61, it can drive the support plate 61 downward through the connecting rod 64 to reduce the slope of the support plate 61. Staff members inquire about the patient's comfort level and adjust the support plate 61 to a more comfortable angle. Then, the patient holds the two handles 62 with both hands to temporarily fix both arms and maintain a more comfortable posture, avoiding movement of the body due to arm discomfort, which could lead to displacement of the chest target.

[0037] The positioning plate 31 is then placed over the patient's chest cavity. The positioning plate 31 is pre-fitted with various universal sizes to fit different body types, and can also be customized to fit individual patient sizes, ensuring a proper fit. Before installing the positioning plate 31, the two sliding rods 42 are raised to their highest points. At this point, the limiting shaft 47 moves above the limiting rod 48, allowing the limiting rod 48 to swing horizontally. By moving the limiting rod 48 so that it abuts against the lower part of the limiting shaft 47, the sliding rod 42 is temporarily fixed at the highest point of its movement trajectory. The patient then inhales, causing the chest cavity to rise, and holds their breath temporarily. The connecting rods 32 on both sides of the positioning plate 31 are then inserted downwards into the two sliding rods 42 (e.g., ...). Figure 8 As shown, after the positioning plate 31 is aligned with the patient's chest cavity, tighten the positioning screw 49 so that the positioning screw 49 presses against the anti-slip plate 33 on the connecting rod 32, thereby fixing the connecting rod 32 and fixing the positioning component 3 on the two mounting parts. At this time, the positioning plate 31 wraps around the patient's chest cavity, thereby fixing the patient's chest cavity position and ensuring the stability of the chest cavity position during radiotherapy.

[0038] After tightening the positioning screw 49, release the two limiting rods 48, thus releasing the limiting effect on the limiting shaft 47, allowing the two sliding rods 42 to slide vertically along the base 41. At this time, the patient begins to exhale, the chest cavity sinks, and the positioning plate 31, the two connecting rods 32, and the two sliding rods 42 move downwards accordingly. Then, instruct the patient to breathe according to the rhythm indicated by the sound 7. During the patient's breathing, the sliding rods 42 continuously move up and down, while the sliding shaft 43 moves up and down synchronously with the sliding rods 42 connected to it. The groove on the slot block 45 is inclined, and when the sliding shaft 43 moves vertically along the slot block 45, it can apply force to the edge of the groove, making... The slot block 45 and the movable plate 44 move horizontally. When the movable plate 44 moves, it drives the controller 461 to slide on the cylinder 46, thereby adjusting the stepping parameters of the cylinder 46. When the output end of the cylinder 46 extends or retracts, it drives the bed board 2 to slide horizontally on the bed body 1. When the bed board 2 moves, it can drive the patient's body to move synchronously. Therefore, when the target point in the patient's chest cavity is vertically fluctuating and horizontally shifting, the bed board 2 can compensate for the target point's shift by translating the same distance in the opposite direction. This allows the target point to maintain its contact accuracy with the radiation through movement, thereby ensuring the accuracy of radiotherapy and avoiding frequent deviation of the radiation from the target point.

[0039] The target deviation caused by different patients' breathing varies. Therefore, calibration is necessary before treatment. During calibration, a reference beam is projected using radiotherapy equipment and aligned with the target mark in the chest cavity to simulate the irradiation of the radiotherapy beam. Then, the patient breathes rhythmically, and the degree of overlap between the reference beam and the target is observed. If the overlap is poor, the first adjusting screw 55 is rotated. When the first adjusting screw 55 rotates, it drives the slide block 54 to slide horizontally on the movable plate 44 through the threaded connection. When the slide block 54 moves, it applies a thrust to the pin shaft 53 through the vertical groove, causing the pin shaft 53 to move and drive the turntable 51 and the slot block 45 to rotate. The rotation axis is the rotation center of the slot block 45. The rotation axis, turntable 51, and slot block 45 form a whole. After the angle of the slot block 45 is changed, the distance by which the slot block 45 moves horizontally after the slide shaft 43 moves downward can be adjusted. For example, when the slot block 45 is vertical, the slide block 45 moves horizontally. The downward movement of shaft 43 does not cause the slot block 45 to move horizontally. However, when the top of slot block 45 tilts to the left, the downward movement of shaft 43 causes slot block 45 to move to the left. When the top of slot block 45 tilts to the right, the downward movement of shaft 43 causes slot block 45 to move to the right. Similarly, the greater the tilt of slot block 45, the greater the translation of slot block 45 caused by the downward movement of shaft 43. Therefore, by adjusting the angle of slot block 45 itself, the direction and distance of translation of bed board 2 triggered by the downward movement of shaft 43 can be adjusted. During the patient's breathing process, medical staff repeatedly rotate the first adjusting screw 55. The pointer 52 and the scale help medical staff judge the current angle of slot block 45. After the translation of bed board 2 matches the offset of the target point, the target point can always maintain a high degree of overlap with the reference ray. Then, radiotherapy can begin. The thread between the first adjusting screw 55 and the slide 54 has self-locking properties, which can ensure the stability of the angle of slot block 45.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A gynecological radiotherapy positioning and fixation auxiliary device, comprising a bed (1), characterized in that: The bed frame (1) is slidably connected to the top of the bed board (2); It also includes a positioning component (3) and a compensation component (4). The compensation component (4) is divided into an installation part, a linkage part and an execution part. The installation part is connected to the positioning component (3) to position the patient's chest cavity. The execution part is used to drive the bed board (2) to move. The linkage unit can control the output parameters of the actuator according to the fluctuation of the positioning component (3) caused by the patient's breathing, so that the bed board (2) can compensate for the distance of the patient's chest target point displacement by translation.

2. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 1, characterized in that: The positioning component (3) includes a positioning plate (31) that can fit into the patient's chest cavity, and two connecting rods (32) are connected to the positioning plate (31).

3. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 2, characterized in that: The mounting part is provided in two parts, and the two connecting rods (32) are respectively inserted into the two mounting parts. The mounting part includes a base (41) and a slide rod (42). The base (41) is connected to the bed board (2), and the slide rod (42) is slidably inserted into the base (41). The connecting rod (32) can be slidably inserted into the slide rod (42).

4. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 3, characterized in that: The actuator includes a cylinder (46), which is mounted on the bed (1). The output end of the cylinder (46) is connected to the bed board (2). The cylinder (46) is equipped with a controller (461) that controls the output of the cylinder (46) by sliding.

5. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 4, characterized in that: The linkage includes a sliding shaft (43), a movable plate (44), and a groove block (45). The movable plate (44) is horizontally slidably installed on the side wall of the bed (1). The movable plate (44) is connected to the controller (461). The groove block (45) is installed on the movable plate (44). The sliding shaft (43) is connected to the sliding rod (42) near the cylinder (46). The groove block (45) is provided with a sliding groove. The sliding shaft (43) is slidably connected to the sliding groove of the groove block (45). When the sliding shaft (43) moves vertically, it drives the groove block (45) to move horizontally through the sliding groove.

6. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 5, characterized in that: The movable plate (44) is provided with a calibration mechanism (5), which includes a turntable (51), a slide (54) and a first adjusting screw (55). The slot block (45) is provided with a rotating shaft, and the slot block (45) is rotatably connected to the movable plate (44) through the rotating shaft. The turntable (51) is connected to the end of the rotating shaft away from the slot block (45). A pin (53) is connected to the turntable (51), and the pin (53) is offset from the center of the turntable (51). The slide block (54) is horizontally slidably connected to the movable plate (44). The first adjusting screw (55) is rotatably installed on the movable plate (44) and is threadedly connected to the slide block (54). The slide block (54) is provided with a vertical sliding groove, and the pin (53) is slidably connected to the vertical sliding groove. When the slide block (54) moves horizontally, it can drive the turntable (51) and the slot block (45) to rotate through the pin (53).

7. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 6, characterized in that: A pointer (52) is installed on the turntable (51), and a set of scales is provided on the movable plate (44). The pointer (52) and the scales cooperate to display the current angle of the slot block (45).

8. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 6, characterized in that: The bottom of the slide bar (42) is connected to a limiting shaft (47), which is horizontally set. A limiting rod (48) is hinged on the base (41), and the limiting rod (48) can abut against the bottom of the limiting shaft (47) to lock the slide bar (42).

9. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 3, characterized in that: A positioning screw (49) is threaded onto the slide rod (42), and an anti-slip plate (33) is connected to the connecting rod (32). The positioning screw (49) can abut against the anti-slip plate (33) after the connecting rod (32) is inserted into the positioning screw (49).

10. The gynecological radiotherapy positioning and fixation auxiliary device according to claim 1, characterized in that: The bed board (2) is provided with an arm support mechanism (6) and a speaker (7). The arm support mechanism (6) includes a support plate (61), a nut seat (63), and a second adjusting screw (65). The support plate (61) is hinged to the bed board (2). The nut seat (63) is horizontally slidably connected to the bed board (2). The second adjusting screw (65) is rotatably mounted on the bed board (2). The second adjusting screw (65) is threadedly connected to the nut seat (63). A connecting rod (64) is hinged between the nut seat (63) and the support plate (61). Two handles (62) are installed on the support plate (61). The speaker (7) is used to play breathing rhythm prompts.

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