A radiotherapy field modulation device

Abstract

The utility model relates to adjusting device technical field especially, it relates to a radiotherapy field adjusting device. It mainly aims at the existing radiotherapy field adjusting device has the problem that the adjusting precision is limited, is difficult to satisfy the complex tumour shape and individualized treatment demand, and the operation convenience is insufficient, the adjustment is complicated and is easy to influence the accuracy because of the human error, and proposes the following technical scheme: including the shell, set up in the shell multiple groups parallelly arranged first leaf, multiple groups parallelly arranged second leaf are arranged below first leaf, first leaf and second leaf are arranged perpendicularly, two sets of limiting components are installed in the shell, two sets of limiting components are perpendicular to each other and are respectively used for limiting when first leaf and second leaf move. The utility model is helpful to accurately adapt complex tumour shape and realize individualized treatment, improves treatment efficiency and effect, reduces the damage to surrounding normal tissue.

Description

Technical Field

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

[0002] As a key method in cancer treatment, the precision of radiotherapy plays a decisive role in improving treatment efficacy and reducing damage to surrounding healthy tissues. With the continuous development of cancer treatment technology, spatial fractionation radiotherapy is gradually becoming a cutting-edge trend. Spatial fractionation radiotherapy divides the tumor target area into multiple sub-regions, and precisely controls the radiation dose distribution according to the characteristics and location of each sub-region, achieving adaptation to complex tumor shapes. While effectively killing tumor cells, it significantly reduces radiation damage to surrounding healthy tissues. However, existing radiotherapy field adjustment devices face numerous challenges in practical applications, failing to meet the stringent requirements of spatially fractionated radiotherapy. On one hand, some devices lack sufficient adjustment precision, making it difficult to adapt to increasingly complex tumor shapes and personalized treatment needs. For example, for tumors with irregular shapes adjacent to vital organs, existing adjustment devices cannot precisely adjust the field to a state highly consistent with the tumor boundary, resulting in insufficient radiation dose to certain parts of the tumor target area, severely impacting treatment efficacy. On the other hand, existing field adjustment devices have significant drawbacks in terms of ease of operation. Their adjustment procedures are complex, requiring operators to spend considerable time and effort on repeated adjustments, which not only reduces treatment efficiency but may also affect adjustment precision due to human error, thereby affecting the precise control of radiation dose to each sub-region in spatially fractionated radiotherapy. Therefore, this invention proposes a radiotherapy field adjustment device. Utility Model Content

[0003] The purpose of this invention is to address the problems in the prior art where existing radiotherapy field adjustment devices have limited adjustment precision, making it difficult to meet the needs of complex tumor shapes and personalized treatment, as well as insufficient ease of operation, cumbersome adjustment, and susceptibility to human error affecting accuracy. This invention proposes a radiotherapy field adjustment device.

[0004] The technical solution of this utility model is as follows: A radiotherapy field adjustment device, comprising a housing; multiple sets of parallel first blades disposed in the housing, and multiple sets of parallel second blades disposed below the first blades, the first blades and the second blades being perpendicular to each other; two sets of limiting components installed in the housing, the two sets of limiting components being perpendicular to each other and respectively used to limit the movement of the first blades and the second blades; four sets of adjustment mechanisms respectively disposed at both ends of the two sets of limiting components, the adjustment mechanisms being used to drive the first blades and the second blades to move; and multiple sets of displacement sensors installed on the outside of the limiting components, the displacement sensors being used to monitor the displacement of the first blades and the second blades.

[0005] Optionally, the housing includes a base plate, a protective cover is mounted on the top of the base plate, the protective cover has a through hole on the top, and multiple sets of handles are fixedly connected to the base plate.

[0006] Optionally, the limiting component includes two sets of side plates fixedly disposed on the top of the base plate, multiple sets of connecting rods fixedly connected between the two sets of side plates, and a limiting plate fixedly connected to one side of each of the two sets of side plates, with multiple sets of arc-shaped sliding grooves provided on the limiting plate.

[0007] Optionally, the limiting component further includes an arc-shaped guide rail fixedly connected to both ends of the first blade or the second blade. The arc-shaped guide rail is convex in shape and is slidably connected in an arc-shaped groove.

[0008] Optionally, the adjustment mechanism includes a mounting base fixedly connected to the top of the base plate. The mounting base is disposed between two sets of side plates. The mounting base has multiple sets of mounting holes. A rotating sleeve is rotatably connected to the mounting holes. A push rod motor is mounted on the rotating sleeve. The output ends of the multiple sets of push rod motors are respectively connected to multiple sets of first blades or second blades.

[0009] Optionally, multiple sets of the displacement sensors are respectively installed on the two sets of side plates on opposite sides.

[0010] Optionally, a monitoring column is fixedly connected to the side of the arc-shaped guide rail near the displacement sensor, a first groove is provided at the position of the arc-shaped slide, a second groove is provided at the position of the side plate corresponding to the displacement sensor, and the monitoring column is slidably connected in the first groove and the second groove.

[0011] In summary, this application includes at least one of the following beneficial technical effects: This invention, through the setting of an adjustment mechanism, allows operators to easily move the first and second blades simply by starting the push rod motor. The rotatable design of the rotating sleeve enables the push rod motor to adapt to the movement of the blades during the driving process. The operation is simple and smooth, eliminating the need for complex manual fine adjustments, greatly saving the time and labor costs required for adjusting the radiation field, and significantly improving the preparation efficiency of radiotherapy. Furthermore, the setting of the limiting components ensures the stability of the first and second blades during movement. The cooperation of the arc-shaped guide rail and the arc-shaped slide precisely restricts the movement trajectory of the blades, ensuring that the blades are always directly facing the radiation source point, preventing the appearance of a penumbra area after radiation irradiation, and ensuring the neatness of the radiation field edge. At the same time, the coordinated work of the displacement sensor and the monitoring column can monitor the displacement of the blades in real time and accurately. This allows the operator to accurately adjust the position of the blades based on the feedback data, thereby ensuring that the final radiation field grid area can highly match the shape of the tumor target area and the treatment needs, greatly improving the accuracy of radiotherapy, helping to improve the treatment effect and reduce damage to surrounding normal tissues. In summary, this invention helps to accurately adapt to complex tumor shapes to achieve personalized treatment, improve treatment efficiency and effectiveness, and reduce damage to surrounding normal tissues. Attached Figure Description

[0012] Figure 1 A schematic diagram of a radiotherapy field adjustment device is provided. Figure 2 This is a schematic diagram of the structure of the first blade; Figure 3 This is a schematic diagram of the limit component. Figure 4 This is a schematic diagram of the disassembled structure of the limiting component; Figure 5 This is a schematic diagram of the monitoring column structure; Figure 6 This is a comparison of the area irradiated by rays under the curved trajectory of the blade (left) and the straight trajectory of the blade (right).

[0013] Figure label: 1. Outer shell; 11. Base plate; 12. Protective cover; 13. Through hole; 14. Handle; 2. First blade; 3. Second blade; 4. Limiting assembly; 41. Side plate; 42. Connecting rod; 43. Limiting plate; 44. Arc-shaped slide groove; 45. Arc-shaped guide rail; 5. Adjustment mechanism; 51. Mounting base; 52. Mounting hole; 53. Rotating sleeve; 54. Push rod motor; 6. Displacement sensor; 61. Monitoring column; 62. First chute; 63. Second chute. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0015] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0016] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Example: like Figure 1 As shown, the present invention proposes a radiotherapy field adjustment device, including a housing 1, which includes a base plate 11. A protective cover 12 is mounted on the top of the base plate 11, and a through hole 13 is provided on the top of the protective cover 12. The through hole 13 is configured as an area for passing radiation. Multiple sets of handles 14 are also fixedly connected to the base plate 11, and the handles 14 are configured to facilitate the taking and placing of the device.

[0020] For further details, please refer to Figure 2The aforementioned adjustment device includes multiple sets of parallel first blades 2 disposed in the outer casing 1, and multiple sets of parallel second blades 3 disposed below the first blades 2. The first blades 2 and the second blades 3 are perpendicular to each other. After the first blades 2 and the second blades 3 are adjusted to the desired position, the grid area formed is used to achieve radiotherapy irradiation.

[0021] Furthermore, such as Figures 2 to 5 As shown, the aforementioned adjusting device includes two sets of limiting components 4 installed in the housing 1. The two sets of limiting components 4 are perpendicular to each other and are used to limit the movement of the first blade 2 and the second blade 3, respectively. The limiting components 4 include two sets of side plates 41 fixedly disposed on the top of the base plate 11, and the positions of the side plates 41 are fixed. Multiple sets of connecting rods 42 are fixedly connected between the two sets of side plates 41. The connecting rods 42 fix the position of the side plates 41 and increase the structural strength, preventing the side plates 41 from tilting. Limiting plates 43 are fixedly connected to opposite sides of the two sets of side plates 41, and the positions of the limiting plates 43 are fixed. The limiting plate 43 has multiple sets of arc-shaped sliding grooves 44. The limiting component 4 also includes an arc-shaped guide rail 45 fixedly connected to both ends of the first blade 2 or the second blade 3. The arc-shaped guide rail 45 is convex and is slidably connected in the arc-shaped sliding grooves 44. The arc-shaped guide rail 45 moves synchronously with the first blade 2 or the second blade 3, thereby limiting the movement of the first blade 2 and the second blade 3, so that the movement of the first blade 2 and the second blade 3 is smooth.

[0022] like Figure 6 As shown on the left, the arc-shaped groove 44 and arc-shaped guide rail 45 ensure that the first blade 2 and the second blade 3 are always directly aligned with the radiation source. This effectively prevents the appearance of a penumbra after radiation irradiation and ensures the neatness of the radiation field edge. This ensures the accurate edge position of each sub-region to match the shape of the tumor while avoiding damage to surrounding healthy tissue. Figure 6 (Right) In the middle, the existing technology uses a linear motion trajectory to adjust the position of the blades. In actual operation, this will produce a penumbra, which will not be able to receive a sufficient radiation dose, thus affecting the treatment effect.

[0023] For details, please refer to Figure 2 and Figure 2The aforementioned adjustment device also includes four sets of adjustment mechanisms 5 respectively disposed at both ends of the two sets of limiting components 4. The adjustment mechanisms 5 are used to drive the first blade 2 and the second blade 3 to move. The adjustment mechanism 5 includes a mounting base 51 fixedly connected to the top of the base plate 11, and the position of the mounting base 51 is fixed. The mounting base 51 is disposed between the two sets of side plates 41, and multiple sets of mounting holes 52 are provided on the mounting base 51. A rotating sleeve 53 is rotatably connected to the mounting hole 52, and a push rod motor 54 is mounted on the rotating sleeve 53. The output ends of the multiple sets of push rod motors 54 are respectively connected to multiple sets of first blades 2 or second blades 3. The rotating arrangement of the rotating sleeve 53 facilitates the adaptive deflection of the push rod motor 54 when it drives the first blade 2 or the second blade 3 to move. The output end of the rotating sleeve 53 passes through any group of first blades 2 connected to it on the side near the mounting base 51, and the output end of the rotating sleeve 53 passes through any group of second blades 3 connected to it on the side near the mounting base 51. Thus, after the rotating sleeve 53 is started, it only drives one group of first blades 2 or second blades 3 to move, without hindering other first blades 2 or second blades 3 from being driven by the remaining rotating sleeves 53.

[0024] Furthermore, the aforementioned adjustment device also includes multiple sets of displacement sensors 6 installed on the outside of the limiting assembly 4. The displacement sensors 6 are used to monitor the displacement of the first blade 2 and the second blade 3. The multiple sets of displacement sensors 6 are respectively installed on the opposite side of the two side plates 41. The positions of the displacement sensors 6 are fixed, and the number of displacement sensors 6 corresponds to the first blade 2 and the second blade 3, thereby performing corresponding monitoring and improving the accuracy of sensing the position of the first blade 2 and the second blade 3. The displacement sensors 6 are existing technology and will not be described in detail here. A monitoring column 61 is fixedly connected to the side of the arc-shaped guide rail 45 near the displacement sensor 6. When the first blade 2 and the second blade 3 move, the monitoring column 61 moves synchronously through the arc-shaped guide rail 45, thereby the displacement sensor 6 detects the displacement of the monitoring column 61, that is, monitors the displacement of the first blade 2 or the second blade 3. A first groove 62 is provided at the position of the arc-shaped groove 44, and a second groove 63 is provided at the corresponding position of the side plate 41 and the displacement sensor 6. The monitoring column 61 is slidably connected in the first groove 62 and the second groove 63, so that the displacement sensor 6 can monitor the displacement of the monitoring column 61.

[0025] In this embodiment, the operator holds the handle 14 on the base plate 11 and moves the radiotherapy field adjustment device to the required position. The through hole 13 at the top of the shield 12 serves as the area through which subsequent rays pass, ensuring the device is placed stably. According to the radiotherapy requirements, the adjustment mechanism 5 is activated, and the output end of the push rod motor 54 pushes the first blade 2 or the second blade 3 connected to it. Since the rotating sleeve 53 is rotatable, it can adaptively deflect during the movement of the blade driven by the push rod motor 54, ensuring smooth pushing. Furthermore, a set of rotating sleeves 53 only moves a set of first blades 2 or second blades 3, without interfering with the driving of other blades. When the first blade 2 or second blade 3 moves, the arc-shaped guide rails 45 at both ends slide along the arc-shaped grooves 44 on the limiting plate 43, thereby achieving smooth movement. The limiting component 4 restricts the movement trajectory of the blades.

[0026] The displacement sensor 6, installed on the outside of the limiting assembly 4, begins to operate. When the first blade 2 or the second blade 3 moves, it drives the monitoring column 61 to move synchronously via the arc-shaped guide rail 45. The monitoring column 61 slides in the first groove 62 opened at the position of the arc-shaped groove 44 and the second groove 63 opened at the corresponding position of the side plate 41 and the displacement sensor 6. The displacement sensor 6 monitors the displacement of the monitoring column 61, thereby accurately monitoring the displacement of the first blade 2 or the second blade 3, and feeding back the displacement data to the operator or relevant control system.

[0027] The positions of the first blade 2 and the second blade 3 are continuously adjusted until the two sets of blades form a grid area that meets the requirements of radiotherapy. At this time, the rays can pass through the through hole 13 at the top of the shield 12 and through the grid area formed by the adjusted first blade 2 and the second blade 3 to achieve precise irradiation of the tumor target area.

[0028] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A radiotherapy field adjustment device, characterized in that, include: Outer shell (1); Multiple sets of parallel first blades (2) are disposed in the outer shell (1), and multiple sets of parallel second blades (3) are disposed below the first blades (2), with the first blades (2) and the second blades (3) being perpendicular to each other; Two sets of limiting components (4) are installed in the housing (1), the two sets of limiting components (4) are perpendicular to each other and are used to limit the movement of the first blade (2) and the second blade (3); Four sets of adjustment mechanisms (5) are respectively set at both ends of the two sets of limiting components (4). The adjustment mechanisms (5) are used to drive the first blade (2) and the second blade (3) to move. Multiple sets of displacement sensors (6) are installed on the outside of the limiting component (4), and the displacement sensors (6) are used to monitor the displacement of the first blade (2) and the second blade (3).

2. The radiotherapy field adjustment device according to claim 1, characterized in that, The outer shell (1) includes a base plate (11), a cover (12) is installed on the top of the base plate (11), a through hole (13) is opened on the top of the cover (12), and multiple sets of handles (14) are fixedly connected to the base plate (11).

3. The radiotherapy field adjustment device according to claim 2, characterized in that, The limiting component (4) includes two sets of side plates (41) fixedly installed on the top of the base plate (11). Multiple sets of connecting rods (42) are fixedly connected between the two sets of side plates (41). A limiting plate (43) is fixedly connected to one side of each of the two sets of side plates (41). Multiple sets of arc-shaped grooves (44) are opened on the limiting plate (43).

4. The radiotherapy field adjustment device according to claim 3, characterized in that, The limiting component (4) also includes an arc-shaped guide rail (45) fixedly connected to both ends of the first blade (2) or the second blade (3). The arc-shaped guide rail (45) is convex in shape and is slidably connected in the arc-shaped groove (44).

5. A radiotherapy field adjustment device according to claim 4, characterized in that, The adjustment mechanism (5) includes a mounting base (51) fixedly connected to the top of the base plate (11). The mounting base (51) is located between two sets of side plates (41). The mounting base (51) has multiple sets of mounting holes (52). A rotating sleeve (53) is rotatably connected in the mounting hole (52). A push rod motor (54) is mounted on the rotating sleeve (53). The output ends of the multiple sets of push rod motors (54) are respectively connected to multiple sets of first blades (2) or second blades (3).

6. A radiotherapy field adjustment device according to claim 5, characterized in that, Multiple sets of displacement sensors (6) are respectively installed on the opposite side of the two sets of side plates (41).

7. A radiotherapy field adjustment device according to claim 6, characterized in that, The arc-shaped guide rail (45) is fixedly connected to a monitoring column (61) on the side near the displacement sensor (6). A first groove (62) is provided at the position of the arc-shaped slide groove (44). A second groove (63) is provided at the position corresponding to the displacement sensor (6) on the side plate (41). The monitoring column (61) is slidably connected in the first groove (62) and the second groove (63).

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