Three-dimensional water tank dosage verification device and auxiliary device thereof

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a three-dimensional water tank dosage verification device and an auxiliary device thereof. The auxiliary device of the three-dimensional water tank dosage verification device comprises a frame body, a screw rod, a nut and a top plate assembly, the nut is fixed on the upper side of the frame body, the screw rod penetrates through the frame body and the nut to be connected with the top plate assembly, and the top plate assembly is rotationally arranged on the screw rod. The nut is fixedly arranged on the upper side of the frame body, the screw penetrates through the nut to be connected with the top plate assembly, and the screw is rotated, so that the height of the top plate assembly is adjusted, the top plate assembly can be self-locked, in the using process, the height is kept unchanged, the position is accurate, and the device is arranged at one end of the cantilever of the carbon fiber bed board and does not influence operation of the O-shaped machine frame at all. Moreover, when the top plate assembly is in contact with the carbon fiber bed plate, the top plate assembly does not rotate due to the action of friction force, namely, the bed plate is not abraded when the top plate assembly reaches a specified height and the screw rod is stopped rotating, and the bed plate is protected.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically a three-dimensional water tank dosage verification device and its auxiliary device. Background Technology

[0002] A 3D radiotherapy tank is a nuclear instrument used in the field of radiotherapy. It can simulate the three-dimensional structure and shape of human tissue and provide precise dose distribution. This device typically consists of a tank and a control system.

[0003] In the field of medical devices, especially in the data acquisition of medical linear accelerators, three-dimensional water tanks are used in conjunction with various dosimeters to measure radiotherapy dose. They are essential tools for ensuring radiotherapy dose and quality; without a three-dimensional water tank, radiotherapy dose detection cannot be guaranteed. Furthermore, the positioning accuracy of the three-dimensional water tank significantly impacts the dose detection accuracy of the radiotherapy equipment.

[0004] When scanning the 3D water tank for data acquisition, approximately 100-200 kg of purified water is injected into the tank. Traditionally, the placement of the 3D water tank is adjusted using an adjustable base underneath. However, as the accelerator mainframe has evolved from a C-shape to an O-shape, the 3D water tank must be placed on the carbon fiber bed board of the treatment table. The testing instruments then surround the 3D water tank for testing. The limited internal height of the O-shaped frame's aperture further reduces the tank's vertical movement within the frame's aperture, potentially making it impossible to perform dose detection at the corresponding positions. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an auxiliary device for accurate three-dimensional water tank dosage verification that can be used in an O-type frame.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: the auxiliary device of the three-dimensional water tank dosage verification device includes a frame, a screw, a nut and a top plate assembly. The nut is fixed on the upper side of the frame, the screw passes through the frame and is connected to the nut to the top plate assembly, and the top plate assembly is rotatably set at the top of the screw.

[0007] Preferably, the top plate assembly includes a top plate and a bearing, with the bearing disposed within the top plate and connected to the screw.

[0008] Preferably, it also includes a pressing plate, wherein the top plate is provided with two grooves, the two grooves are arranged side by side on the upper side of the top plate, one of the grooves is located at the center of the top plate, and the pressing plate is disposed in the groove.

[0009] Preferably, the thickness of the compressed tablet is less than the depth of the groove.

[0010] Preferably, it also includes a handwheel, which is located at the bottom end of the screw.

[0011] Preferably, the frame includes a support plate, a bracket, and a base plate. The three brackets are evenly distributed in a triangle on the base plate, the support plate is located on the upper side of the bracket, and the screw is located in the middle of the bracket and passes through the support plate.

[0012] Preferably, it also includes casters, which are located on the underside of the base plate.

[0013] Preferably, a braking device is provided on the caster.

[0014] A three-dimensional water tank dosage verification device includes a three-dimensional water tank, a carbon fiber bed board, and an O-shaped frame. A treatment bed and an auxiliary device are respectively arranged on both sides of the carbon fiber bed board. One end of the carbon fiber bed board is connected to the treatment bed, and the other end passes through the O-shaped frame and is connected to the auxiliary device. The frame is set on the lower side of the carbon fiber bed board, and the upper side of the top plate assembly contacts the lower side of the carbon fiber bed board. The three-dimensional water tank is placed on the carbon fiber bed board.

[0015] Compared with existing technologies, the beneficial effects of this technical solution are:

[0016] This invention fixes a nut to the upper side of the frame, with a screw passing through the nut and connecting to the top plate assembly. Rotating the screw adjusts the height of the top plate assembly. When the top plate assembly and the screw are under pressure, the screw cannot rotate, forming a self-locking mechanism. During use, the height remains constant and the position is accurate. Furthermore, since it is located at one end of the cantilever of the carbon fiber bed board, it has no impact on the operation of the O-type frame.

[0017] Furthermore, due to the effect of friction, when the top plate assembly comes into contact with the carbon fiber bed board, the top plate assembly stops rotating when the screw is rotated. The bed board is not worn, thus protecting it. It also indicates that the specified height has been reached and provides support, so the screw stops rotating. Attached Figure Description

[0018] Figure 1 This is a front view of an auxiliary device of a three-dimensional water tank dosage verification device according to this utility model.

[0019] Figure 2 This is a top view of the present invention.

[0020] Figure 3 for Figure 1 Sectional view at point A in the middle.

[0021] Figure 4 This is a front view of a three-dimensional water tank dosage verification device according to the present invention.

[0022] The components include: 1. Frame; 2. Screw; 3. Nut; 4. Top plate; 5. Bearing; 6. Groove; 7. Pressure plate; 8. Handwheel; 9. Support plate; 10. Bracket; 11. Base plate; 12. Casters; 13. Pressure plate; 14. Bearing retaining ring; 15. Carbon fiber bed board; 16. Three-dimensional water tank; 17. O-type frame. Detailed Implementation

[0023] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0024] Reference Figure 1 The three-dimensional water tank dosage verification auxiliary device includes a frame 1, a screw 2, a nut 3, a top plate assembly, and a handwheel 8. The nut 3 is fixed on the upper side of the frame 1. The screw 2 passes through the frame 1 and is connected to the nut 3. The top plate assembly is set on the upper side of the nut 3 and is rotatably set on the top of the screw 2. The disc of the handwheel 8 is horizontally fixed at the bottom of the screw 2 and is perpendicular to the screw 2. The disc is equipped with an operating handle. Rotating the handwheel 8 will drive the screw 2 to move vertically.

[0025] The frame 1 includes a support plate 9, brackets 10 and a base plate 11. The three brackets 10 are evenly distributed on the horizontally set square base plate 11. The three brackets 10 are inclined and narrower at the top and wider at the bottom. The support plate 9 is horizontally fixed on the upper side of the three brackets 10. The support plate 9 and the base plate 11 form a movement space for the screw 2. The screw 2 is set in the movement space formed by the three brackets 10 and passes through the round hole at the center of the support plate 9 to connect the nut 3.

[0026] This auxiliary device is also equipped with four casters 12, which are located on the underside of the base plate 11. Two of the casters 12 are fixed casters, and the other two are swivel casters. The two swivel casters are equipped with braking devices to lock the casters 12 after moving to the designated position.

[0027] Reference Figures 2-3 The screw 2 passes through the nut 3 and connects to the top plate assembly located at the top of the screw 2.

[0028] The top plate assembly includes a top plate 4 and a bearing 5. In this embodiment, the bearing 5 is an angular contact bearing, which is disposed inside the top plate 4 and connected to the screw 2. The top plate 4 is a stepped column with both upper and lower cylindrical sections, the diameter of the upper cylinder being larger than that of the lower cylinder. Two grooves 6 are arranged side by side on the upper cylinder, one of which is located at the center of the top plate 4. A clearance hole for the clamping plate 13 is provided in the middle of the groove 6. A bearing hole for placing the bearing 5 is provided in the middle of the top plate 4. The bearing 5 is disposed in the bearing hole. A clamping plate 13 is provided on the upper side of the bearing 5 and is fixed to the screw 2 by screws. A bearing retaining ring 14 is provided on the lower side of the bearing 5 to fix the bearing 5.

[0029] When the handwheel 8 is rotated to make the screw 2 rotate, the screw 2 moves in the vertical direction. When the top plate 4 in the upper top plate assembly comes into contact with the carbon fiber bed board, the handwheel 8 is rotated again. The top plate 4 and the bed board generate friction due to pressure, so they remain relatively stationary, preventing wear on the bed board.

[0030] It also includes a pressure plate 7, which is a rectangular cover plate placed in the groove 6, and its thickness is less than the depth of the groove 6. Three threaded holes are evenly spaced on the pressure plate 7, allowing the top plate assembly and the screw 2 to rotate freely. When the top plate assembly needs to rotate, the pressure plate 7 is placed in the groove 6 on one side. When the top plate assembly does not need to rotate, the pressure plate 7 is placed in the middle groove 6 and fixed with three screws. The middle screw is fixed to the screw 2, and the two side screws are fixed to the top plate 4, so that the top plate assembly cannot rotate relative to the screw 2.

[0031] Reference Figure 4 A three-dimensional water tank dosage verification device includes a three-dimensional water tank 16, a carbon fiber bed board 15 and an O-shaped frame 17. One end of the carbon fiber bed board 15 is connected to the treatment bed, and the other end is cantilevered through the O-shaped frame 17 and supported by the three-dimensional water tank dosage verification auxiliary device. The three-dimensional water tank 16 is placed on the carbon fiber bed board 15.

[0032] The carbon fiber bed board 15 cantileveredly supports the three-dimensional water tank 16. In order not to obstruct the use of the O-type frame 17, we tried to set a jack at the front end of the treatment bed to support the carbon fiber bed board. However, due to the drop in oil pressure during the use of the jack, the jack rod slowly falls, causing the height of the three-dimensional water tank 16 to decrease, resulting in inaccurate data. Therefore, this utility model designs a three-dimensional water tank dosage verification auxiliary device to assist in the measurement. This auxiliary device is not only simple in structure and can maintain a constant height to accurately assist the verification device in measurement, but its structure can also protect the carbon fiber bed board 15 from wear while determining its required height.

[0033] Work process:

[0034] When scanning the 3D water tank 16 for data acquisition, approximately 100-200 kg of pure water will be injected into the 3D water tank 16. The 3D water tank 16 is placed on the carbon fiber bed board 15 of the treatment bed. The carbon fiber bed board 15 is connected to the treatment bed in a cantilevered manner. The main frame of the O-type frame 17 is set on one side of the treatment bed and rotates along the treatment bed to collect data.

[0035] The three-dimensional water tank dosage verification auxiliary device is pushed to one end of the carbon fiber bed board 15. The caster 12 is fixed by the braking device. The height of the screw 2 is adjusted by rotating the handwheel 8. The screw 2 rotates and rises along the nut 3, thereby driving the top plate 4 to rise until the top plate 4 contacts the carbon fiber bed board 15 and generates friction. The angular contact bearing in the top plate 4 rotates. The top plate 4 does not rotate and will not generate friction on the carbon fiber bed board 15, thus providing support for the carbon fiber bed board 15 and assisting the three-dimensional water tank dosage verification device in verification.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. An auxiliary device for a three-dimensional water tank dosage verification device, characterized in that: It includes a frame (1), a screw (2), a nut (3) and a top plate assembly. The nut (3) is fixed on the upper side of the frame (1). The screw (2) passes through the frame (1) and is connected to the nut (3). The top plate assembly is set on the upper side of the nut (3) and is rotatably set on the top of the screw (2).

2. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 1, characterized in that: The top plate assembly includes a top plate (4) and a bearing (5), with the bearing (5) disposed inside the top plate (4) and connected to the screw (2).

3. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 2, characterized in that: It also includes a pressing sheet (7), and the top plate (4) is provided with two grooves (6), the two grooves (6) are arranged side by side on the upper side of the top plate (4), one of the grooves (6) is located at the center of the top plate (4), and the pressing sheet (7) is located in the groove (6).

4. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 3, characterized in that: The thickness of the pressed sheet (7) is lower than the depth of the groove (6).

5. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 1, characterized in that: It also includes a handwheel (8), which is located at the bottom end of the screw (2).

6. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 1, characterized in that: The frame (1) includes a support plate (9), a bracket (10) and a base plate (11). The three brackets (10) are inclined and are evenly distributed on the base plate (11) with a narrow top and a wide bottom. The support plate (9) is located on the upper side of the three brackets (10). The screw (2) is located in the space formed by the support plate (9) and the base plate (11) and passes through the support plate (9).

7. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 6, characterized in that: It also includes casters (12), which are located on the underside of the base plate (11).

8. The auxiliary device of the three-dimensional water tank dosage verification device according to claim 7, characterized in that: A braking device is provided on the caster (12).

9. A three-dimensional water tank dosage verification device using the auxiliary device according to any one of claims 1 to 8, characterized in that: The device includes a three-dimensional water tank (16), a carbon fiber bed board (15), and an O-shaped frame (17). A treatment bed and an auxiliary device are respectively set on both sides of the carbon fiber bed board (15). One end of the carbon fiber bed board (15) is connected to the treatment bed, and the other end passes through the O-shaped frame (17) to connect to the auxiliary device. The frame (1) is set on the lower side of the carbon fiber bed board (15), and the upper side of the top plate assembly contacts the lower side of the carbon fiber bed board (15). The three-dimensional water tank (16) is placed on the carbon fiber bed board (15).

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