Performance detection device used for medical linear accelerator

Abstract

The invention belongs to the technical field of detection devices, and discloses a performance detection device for a medical linear accelerator, which comprises a fixed box, and a top plate is fixedly mounted at the top of the fixed box. Through the arrangement of the cross scale, the rotating block, the hinge rod and the radiotherapy water tank body, an operator puts the whole fixing box on the front side of the medical linear accelerator, so that a laser positioning line of the accelerator is aligned with the cross scale, and the medical linear accelerator and the whole fixing box are calibrated; at the moment, the radiotherapy water tank body is placed at the top of a top plate, then a driving motor is started, a circular shaft drives a rotating block to rotate, a hinge rod drives a fixing rod and a sliding block to move, and therefore four push plates move towards the center of a cross scale at the same time; and the radiotherapy water tank body is pushed to move to the central position of the top of the top plate, so that the position of the radiotherapy water tank body is calibrated.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection devices, and specifically relates to a performance detection device for a medical linear accelerator. Background Art

[0002] A medical linear accelerator is an advanced radiotherapy device. It uses high-frequency electromagnetic waves to accelerate electrons, generating high-energy X-rays or electron beams, and precisely irradiating tumor tissues to destroy the DNA structure of cancer cells, achieving the purpose of inhibiting or eliminating tumors. It has the advantages of significant curative effect, precise positioning, and small side effects, and is one of the important means of modern tumor treatment.

[0003] As the core device of radiotherapy, the stability and accuracy of the performance of a medical linear accelerator are directly related to the treatment effect and patient safety. Therefore, a radiotherapy water tank is needed for comprehensive performance detection. Although the existing radiotherapy water tanks can play a role in detecting the performance of medical linear accelerators, before detection, it is necessary to calibrate between the water tank and the medical linear accelerator. This calibration process is not only cumbersome but also prone to introducing human errors, affecting the accuracy and efficiency of detection. Traditional calibration methods usually rely on the experience of operators for adjustment, making it difficult to ensure the precise relative position between the water tank and the accelerator. Since repeated measurements and adjustments are required during the calibration process, it not only increases the time cost of detection but also may cause damage to the equipment due to improper operation. Therefore, it needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a performance detection device for a medical linear accelerator to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A performance detection device for a medical linear accelerator, including a fixed box. The top of the fixed box is fixedly installed with a top plate. A cross scale is opened on the top of the top plate. Limiting grooves are opened inside the front, back, left, and right sides of the top plate. The number of the limiting grooves is four. Sliders are movably installed inside the four limiting grooves. The bottom of the slider is fixedly connected with a fixed rod. A driving motor is fixedly installed on the bottom surface of the inner surface of the fixed box. The other end of the output shaft of the driving motor is fixedly connected with a circular shaft. A rotating block is fixedly sleeved on the outer surface of the circular shaft. Hinge rods are hinged at the four corners of the rotating block. The inner surface of the other end of the hinge rod is movably sleeved with the outer surface of the fixed rod. The top of the slider is fixedly connected with a push plate. The bottom of the push plate is movably connected with the top of the top plate. A radiotherapy water tank body is movably installed on the top of the top plate.

[0006] Preferably, a box body is fixedly connected to the bottom of the fixed box. On the top of the front and rear sides of the inner surface of the box body, mounting blocks are fixedly installed. A vertical rod is movably sleeved inside the mounting block, and the top of the vertical rod is fixedly connected to the bottom of the fixed box.

[0007] Preferably, a connecting plate is fixedly installed at the bottom of the fixed box, and a fixed frame is fixedly connected to the bottom of the connecting plate.

[0008] Preferably, a fixing plate is fixedly installed at the bottom of the inner surface of the box body. A power motor is fixedly installed on the right side of the fixing plate. The other end of the output shaft of the power motor is fixedly connected to a rotating shaft. The other end of the rotating shaft penetrates through the fixing plate and is movably sleeved with the inner wall of the fixing plate. A first disc is fixedly sleeved on the outer surface of the rotating shaft.

[0009] Preferably, a connecting rod is fixedly sleeved inside the bottom end of the first disc. The outer surface of the connecting rod is movably connected to the inner surface of the fixed frame. A second disc is fixedly sleeved on the left side of the outer surface of the connecting rod. A movable shaft is fixedly sleeved inside the second disc, and the outer surface of the movable shaft is movably sleeved with the inner surface of the fixing plate.

[0010] Preferably, a bottom plate is fixedly connected to the bottom of the box body, and universal wheels are movably installed at the four corners of the bottom of the bottom plate.

[0011] Preferably, lifting rods are movably sleeved inside the front and rear ends of the bottom plate. The bottom of the lifting rod is fixedly connected to a mounting plate, and an anti-slip rubber pad is fixedly connected to the bottom of the mounting plate. A first round block is fixedly installed on the outer side of the top of the lifting rod.

[0012] Preferably, vertical plates are fixedly installed on the front and rear sides of the top of the bottom plate. A fixed shaft is fixedly sleeved inside the top end of the vertical plate. A rotating rod is movably sleeved on the outer surface of the fixed shaft. The inner surface of the rotating rod is movably connected to the outer surface of the first round block. Cylinders are fixedly installed on the front and rear sides of the top of the bottom plate, and a lifting plate is movably sleeved on the outer surface of the cylinder.

[0013] Preferably, a through hole is formed inside the lifting plate. A clamping block located above the lifting plate is movably sleeved inside the cylinder. The bottom of the clamping block is movably connected to the top of the lifting plate. Springs are fixedly connected to the left and right sides of the bottom of the lifting plate, and the bottom ends of the springs are fixedly connected to the top end of the bottom plate. Second round blocks located inside the rotating rod are fixedly installed on the left and right sides of the outside of the lifting plate, and the outer surface of the second round block is movably connected to the inner surface of the rotating rod.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. In the present invention, by providing a cross scale, a rotating block, a hinge rod and a radiotherapy water tank body, an operator places the entire fixing box in front of a medical linear accelerator, aligns the laser positioning line of the accelerator with the cross scale, thereby calibrating the medical linear accelerator with the entire fixing box. At this time, the radiotherapy water tank body is placed on the top of the top plate, and then the driving motor is started, so that the circular shaft drives the rotating block to rotate, causing the hinge rod to drive the fixed rod and the slider to move, and thus the four push plates simultaneously move towards the center of the cross scale. When the push plate contacts the outer surface of the radiotherapy water tank body, it will push the radiotherapy water tank body to move to the center position on the top of the top plate, thereby calibrating the position of the radiotherapy water tank body and facilitating the operator to use.

[0016] 2. In the present invention, by providing a fixed frame, a power motor, a first disc and a connecting rod, when an operator needs to calibrate the water level of the water tank with the laser, the operator can start the power motor, so that the rotating shaft drives the first disc to rotate, thereby causing the connecting rod to squeeze and push the inner surface of the fixed frame, and then driving the fixed frame to move upward, so that the fixed frame drives the fixing box and the top plate to rise through the connecting plate, thereby adjusting the height of the radiotherapy water tank body and avoiding the water level fluctuation caused by adding water into the radiotherapy water tank body to adjust the water level height.

[0017] 3. In the present invention, by providing an anti-slip rubber pad, a rotating rod, a lifting plate and a spring, after the entire fixing box is placed at the designated position, the operator can rotate the clamping block so that the clamping block is aligned with the through hole. At this time, the spring will push the lifting plate upward under the action of elastic force recovery, causing the lifting plate to rise along the outer surface of the cylinder, so that the second circular block drives the rotating rod to rotate, and then the rotating rod drives the first circular block to move downward, causing the lifting rod to move downward, so that the anti-slip rubber pad contacts the ground, thereby fixing the position of the entire fixing box and preventing the position of the fixing box from shifting during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a cross-sectional structural diagram of the front of the present invention;

[0020] Figure 3 is a cross-sectional structural diagram of the side of the present invention;

[0021] Figure 4 is a cross-sectional structural diagram of the top of the present invention;

[0022] Figure 5 is a cross-sectional structural diagram of the fixing box of the present invention;

[0023] Figure 6 is a cross-sectional structural diagram of the box body of the present invention;

[0024] Figure 7 is Figure 1 The partial enlarged structural schematic diagram at position A in the figure.

[0025] In the figure: 1, fixed box; 2, top plate; 3, cross scale; 4, limit groove; 5, slider; 6, fixed rod; 7, drive motor; 8, round shaft; 9, rotating block; 10, articulated rod; 11, push plate; 12, radiotherapy water tank body; 13, box body; 14, mounting block; 15, vertical rod; 16, connecting plate; 17, fixed frame; 18, fixing plate; 19, power motor; 20, rotating shaft; 21, first disc; 22, connecting rod; 23, second disc; 24, movable shaft; 25, bottom plate; 26, universal wheel; 27, lifting rod; 28, mounting plate; 29, anti-slip rubber pad; 30, first round block; 31, vertical plate; 32, fixed shaft; 33, rotating rod; 34, cylinder; 35, lifting plate; 36, through hole; 37, clamping block; 38, second round block; 39, spring. Specific implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1 to 7 shown, the embodiment of the present invention provides a performance detection device for a medical linear accelerator, including a fixed box 1. A top plate 2 is fixedly installed on the top of the fixed box 1. A cross scale 3 is opened on the top of the top plate 2. Limit grooves 4 are opened inside the front, back, left, and right sides of the top plate 2. The number of limit grooves 4 is four. Sliders 5 are movably installed inside the four limit grooves 4. A fixed rod 6 is fixedly connected to the bottom of the slider 5. A drive motor 7 is fixedly installed on the bottom surface of the inner surface of the fixed box 1. The other end of the output shaft of the drive motor 7 is fixedly connected to a round shaft 8. A rotating block 9 is fixedly sleeved on the outer surface of the round shaft 8. Articulated rods 10 are hinged at the four corners of the rotating block 9. The inner surface of the other end of the articulated rod 10 is movably sleeved on the outer surface of the fixed rod 6. A push plate 11 is fixedly connected to the top of the slider 5. The bottom of the push plate 11 is movably connected to the top of the top plate 2. A radiotherapy water tank body 12 is movably installed on the top of the top plate 2.

[0028] The operator places the entire fixing box 1 in front of the medical linear accelerator, aligning the laser positioning line of the accelerator with the middle of the cross scale 3, thereby calibrating the medical linear accelerator with the entire fixing box 1. At this time, the radiotherapy water tank body 12 is placed on the top of the top plate 2. By starting the driving motor 7, the circular shaft 8 drives the rotating block 9 to rotate. The rotating block 9 will pull the four fixing rods 6 to move through the hinge rod 10, causing the slider 5 to move along the inner surface of the limiting groove 4. Since the length and width of the radiotherapy water tank body 12 are equal, the push plate 11 can center and correct the radiotherapy water tank body 12, making the radiotherapy water tank body 12 located in the middle of the upper surface of the top plate 2.

[0029] Among them, the bottom of the fixing box 1 is fixedly connected with a box body 13. On the top of the front and rear sides of the inner surface of the box body 13, mounting blocks 14 are fixedly installed. A vertical rod 15 is movably sleeved inside the mounting block 14, and the top of the vertical rod 15 is fixedly connected with the bottom of the fixing box 1.

[0030] By setting the vertical rod 15, when the fixing box 1 rises, the vertical rod 15 can rise along the inner surface of the mounting block 14, thereby playing a role in limiting the fixing box 1 and making the fixing box 1 rise more stably.

[0031] Among them, the bottom of the fixing box 1 is fixedly installed with a connecting plate 16, and the bottom of the connecting plate 16 is fixedly connected with a fixing frame 17.

[0032] When the fixing frame 17 moves upward, it will drive the connecting plate 16 to rise, thereby enabling the entire fixing box 1 to move upward, and further adjusting the height of the radiotherapy water tank body 12 to calibrate the laser with the horizontal plane inside the radiotherapy water tank body 12.

[0033] Among them, a fixing plate 18 is fixedly installed at the bottom of the inner surface of the box body 13. A power motor 19 is fixedly installed on the right side of the fixing plate 18. The other end of the output shaft of the power motor 19 is fixedly connected with a rotating shaft 20. The other end of the rotating shaft 20 penetrates the fixing plate 18 and is movably sleeved with the inner wall of the fixing plate 18. A first disc 21 is fixedly sleeved on the outer surface of the rotating shaft 20.

[0034] By setting the fixing plate 18, the fixing plate 18 can support and fix the power motor 19. When the operator starts the power motor 19, the rotating shaft 20 will drive the first disc 21 to rotate.

[0035] Among them, a connecting rod 22 is fixedly sleeved inside the bottom end of the first disc 21. The outer surface of the connecting rod 22 is movably connected with the inner surface of the fixing frame 17. A second disc 23 is fixedly sleeved on the left side of the outer surface of the connecting rod 22. A movable shaft 24 is fixedly sleeved inside the second disc 23, and the outer surface of the movable shaft 24 is movably sleeved with the inner surface of the fixing plate 18.

[0036] When the rotating shaft 20 drives the first disc 21 to rotate, the connecting rod 22 will rotate around the rotating shaft 20, so that the connecting rod 22 presses and pushes the inner surface of the fixed frame 17, and then drives the fixed frame 17 to move upward, causing the connecting plate 16 and the fixed box 1 to rise.

[0037] Among them, the bottom of the box body 13 is fixedly connected with a bottom plate 25, and universal wheels 26 are movably installed at the four corners of the bottom of the bottom plate 25.

[0038] By setting the universal wheels 26, the operator can move the whole fixed box 1 more conveniently.

[0039] Among them, lifting rods 27 are movably sleeved inside the front and rear ends of the bottom plate 25. The bottom of the lifting rod 27 is fixedly connected with a mounting plate 28. The bottom of the mounting plate 28 is fixedly connected with an anti-slip rubber pad 29. A first round block 30 is fixedly installed on the outer side of the top of the lifting rod 27.

[0040] When the lifting rod 27 moves downward so that the anti-slip rubber pad 29 touches the ground, the position of the whole fixed box 1 will be fixed, thus avoiding the position deviation of the fixed box 1 when detecting the medical linear accelerator.

[0041] Among them, vertical plates 31 are fixedly installed on the front and rear sides of the top of the bottom plate 25. A fixed shaft 32 is fixedly sleeved inside the top of the vertical plate 31. A rotating rod 33 is movably sleeved on the outer surface of the fixed shaft 32. The inner surface of the rotating rod 33 is movably connected with the outer surface of the first round block 30. Cylinders 34 are fixedly installed on the front and rear sides of the top of the bottom plate 25. A lifting plate 35 is movably sleeved on the outer surface of the cylinder 34.

[0042] When the rotating rod 33 rotates around the fixed shaft 32, the inner surface of the rotating rod 33 will press and push the outer surface of the first round block 30, thereby driving the first round block 30 to descend, so that the first round block 30 drives the lifting rod 27 to move downward.

[0043] Among them, a through hole 36 is opened inside the lifting plate 35. A clamping block 37 located above the lifting plate 35 is movably sleeved inside the cylinder 34. The bottom of the clamping block 37 is movably connected with the top of the lifting plate 35. Springs 39 are fixedly connected to the left and right sides of the bottom of the lifting plate 35. The bottom ends of the springs 39 are fixedly connected to the top end of the bottom plate 25. Second round blocks 38 located inside the rotating rod 33 are fixedly installed on the left and right sides of the outside of the lifting plate 35. The outer surface of the second round block 38 is movably connected with the inner surface of the rotating rod 33.

[0044] The spring 39 is in a compressed state. When the operator rotates the block 37 so that the block 37 is aligned with the through hole 36, the restriction on the lifting plate 35 will be released, enabling the spring 39 to push the lifting plate 35 upward under the action of elastic force recovery.

[0045] Working principle and usage process:

[0046] First, the operator moves the entire fixed box 1 to the designated position, and then aligns the laser positioning line of the accelerator with the cross scale 3 to calibrate the medical linear accelerator with the entire fixed box 1. At this time, by rotating the block 37 so that the block 37 is aligned with the through hole 36, the spring 39 can push the lifting plate 35 to rise along the outer surface of the cylinder 34 under the action of elastic force recovery. Furthermore, the second round block 38 drives the rotating rod 33 to rotate, causing the inner surface of the rotating rod 33 to squeeze and push the outer surface of the first round block 30, thereby driving the first round block 30 and the lifting rod 27 to descend, enabling the anti-slip rubber pad 29 to contact the ground and fixing the position of the entire fixed box 1.

[0047] Then, the operator places the radiotherapy water tank body 12 on the top of the fixed box 1. By starting the drive motor 7, the round shaft 8 drives the rotating block 9 to rotate, and the articulated rod 10 will drive the four fixed rods 6 to move simultaneously, enabling the fixed rods 6 to drive the four sliders 5 and the push plate 11 to move towards the center of the cross scale 3 at the same time. When the push plate 11 contacts the outer surface of the radiotherapy water tank body 12, it will push the radiotherapy water tank body 12 to move, causing the radiotherapy water tank body 12 to move to the center position of the top plate 2 and clamping and fixing the radiotherapy water tank body 12, thereby calibrating the position of the radiotherapy water tank body 12.

[0048] When the operator needs to calibrate the water level inside the radiotherapy water tank body 12 with the laser, the power motor 19 can be started, causing the rotating shaft 20 to drive the first disc 21 to rotate, thereby causing the connecting rod 22 to squeeze and push the inner surface of the fixed frame 17, and then driving the fixed frame 17 to move upward, enabling the fixed frame 17 to drive the fixed box 1 and the top plate 2 to rise through the connecting plate 16, thereby adjusting the height of the radiotherapy water tank body 12 and avoiding the water level fluctuation caused by adding water to the radiotherapy water tank body 12 to adjust the water level height. After calibration, by starting the radiotherapy water tank body 12, the three-dimensional moving mechanism inside the radiotherapy water tank body 12 cooperates with the ionization chamber to automatically measure key parameters such as the ray output dose, percentage depth dose distribution, tissue lateral dose distribution, beam symmetry and uniformity of the medical linear accelerator, and at the same time verify the treatment head positioning accuracy and the multi-leaf collimator movement accuracy, thereby comprehensively detecting the performance of the medical linear accelerator.

[0049] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance detection device for a medical linear accelerator, comprising a fixing box (1), characterized in that: A top plate (2) is fixedly mounted on the top of the fixed box (1), a cross scale (3) is provided on the top of the top plate (2), limiting grooves (4) are provided inside the front and rear sides and the left and right sides of the top plate (2), the number of the limiting grooves (4) is four, a slider (5) is movably mounted inside the four limiting grooves (4), a fixing rod (6) is fixedly connected to the bottom of the slider (5), a driving motor (7) is fixedly mounted on the bottom of the inner surface of the fixed box (1), the driving motor (7) ) The other end of the output shaft is fixedly connected to a circular shaft (8), the outer surface of the circular shaft (8) is fixedly sleeved with a rotating block (9), the four corners of the rotating block (9) are hinged with hinged rods (10), the inner surface of the other end of the hinged rod (10) is movably sleeved with the outer surface of the fixed rod (6), the top of the slider (5) is fixedly connected to a push plate (11), the bottom of the push plate (11) is movably connected to the top of the top plate (2), and the top of the top plate (2) is movably mounted with a radiotherapy water tank body (12).

2. The performance detection device for a medical linear accelerator according to claim 1, characterized in that: The bottom of the fixed box (1) is fixedly connected to a box body (13), the tops of the front and rear sides of the inner surface of the box body (13) are fixedly mounted with mounting blocks (14), the interior of the mounting blocks (14) is movably sleeved with a vertical rod (15), and the top of the vertical rod (15) is fixedly connected to the bottom of the fixed box (1).

3. The performance detection device for a medical linear accelerator according to claim 1, characterized in that: A connecting plate (16) is fixedly mounted on the bottom of the fixing box (1), and a fixing frame (17) is fixedly connected to the bottom of the connecting plate (16).

4. The performance detection device for a medical linear accelerator according to claim 2, characterized in that: A fixing plate (18) is fixedly mounted on the bottom of the inner surface of the box body (13); a power motor (19) is fixedly mounted on the right side of the fixing plate (18); the other end of the output shaft of the power motor (19) is fixedly connected to a rotating shaft (20); the other end of the rotating shaft (20) passes through the fixing plate (18) and is movably sleeved with the inner wall of the fixing plate (18); and a first disc (21) is fixedly sleeved on the outer surface of the rotating shaft (20).

5. The performance detection device for a medical linear accelerator according to claim 4, characterized in that: A connecting rod (22) is fixedly sleeved inside the bottom end of the first disc (21), and the outer surface of the connecting rod (22) is movably connected to the inner surface of the fixed frame (17). A second disc (23) is fixedly sleeved on the left side of the outer surface of the connecting rod (22), and a movable shaft (24) is fixedly sleeved inside the second disc (23), and the outer surface of the movable shaft (24) is movably sleeved to the inner surface of the fixed plate (18).

6. The performance detection device for a medical linear accelerator according to claim 2, characterized in that: The bottom of the box body (13) is fixedly connected to a bottom plate (25), and universal wheels (26) are movably mounted at the four corners of the bottom of the bottom plate (25).

7. The performance detection device for a medical linear accelerator according to claim 6, characterized in that: The interior of the front and rear ends of the bottom plate (25) are movably sleeved with lifting rods (27), the bottom of the lifting rod (27) is fixedly connected to a mounting plate (28), the bottom of the mounting plate (28) is fixedly connected to an anti-slip rubber pad (29), and the outer side of the top of the lifting rod (27) is fixedly mounted with a first round block (30).

8. The performance detection device for a medical linear accelerator according to claim 6, characterized in that: Vertical plates (31) are fixedly mounted on both the front and rear sides of the top of the bottom plate (25); a fixed shaft (32) is fixedly sleeved inside the top of the vertical plate (31); a rotating rod (33) is movably sleeved on the outer surface of the fixed shaft (32); the inner surface of the rotating rod (33) is movably connected to the outer surface of the first round block (30); a cylinder (34) is fixedly mounted on both the front and rear sides of the top of the bottom plate (25); a lifting plate (35) is movably sleeved on the outer surface of the cylinder (34).

9. The performance detection device for a medical linear accelerator according to claim 8, characterized in that: A through hole (36) is provided inside the lifting plate (35); a block (37) located above the lifting plate (35) is movably sleeved inside the cylinder (34); the bottom of the block (37) is movably connected to the top of the lifting plate (35); springs (39) are fixedly connected to the left and right sides of the bottom of the lifting plate (35); the bottom end of the spring (39) is fixedly connected to the top of the bottom plate (25); second round blocks (38) located inside the rotating rod (33) are fixedly installed on the left and right sides of the outer side of the lifting plate (35); the outer surface of the second round block (38) is movably connected to the inner surface of the rotating rod (33).

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