Quality control device for laser lamp above helical fault radiotherapy system

By introducing quality control devices for the main and auxiliary molds, and using gravity pointing and scale lines to calibrate the laser lamp, the problems of numerous devices and poor operational repeatability in the existing technology are solved, thereby improving the accuracy and consistency of laser lamp calibration and supporting system upgrades.

CN223944790UActive Publication Date: 2026-02-27CNNC ACCURAY (TIANJIN) MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202423128344.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-18
Publication Date
2026-02-27
Estimated Expiration
2034-12-18

AI Technical Summary

Technical Problem

The existing calibration methods for the upper laser lamp in helical tomotherapy systems require multiple devices and have poor operational repeatability, resulting in limited measurement accuracy and large random errors.

Method used

A quality control device comprising a main mold and an auxiliary mold is adopted. Gravity pointing and scale lines are used to calibrate the verticality of the laser lamp, reducing the number of devices and human error, and the stability of the equipment is traced through numerical recording.

Benefits of technology

It simplifies the quality control process, improves the accuracy and consistency of laser lamp calibration, reduces equipment and human error, and provides data support for system upgrades.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a quality control device for a laser lamp above a helical fault radiotherapy system. The quality control device comprises a main die body and an auxiliary die body, the auxiliary die body comprises a bottom plate and a stand column; the main mold body comprises an upper transverse plate, a vertical plate, a lower transverse plate, an extension plate and a side plate, a first rectangular hole penetrates through the upper transverse plate, a first scale mark is arranged on the upper transverse plate, a second rectangular hole penetrates through the lower transverse plate, a second scale mark is arranged on the lower transverse plate, a clamping block is arranged on the upper transverse plate, and a connecting rope is connected to the bottom of the clamping block; the connecting rope sequentially penetrates through the first rectangular hole and the second rectangular hole and then is connected with a lead weight, a circular hole is formed in the upper end of the vertical plate and fixed to the stand column through a first bolt, an arc-shaped hole is formed in the lower end of the vertical plate and connected with the stand column through a second bolt, and a side bolt is installed on the side plate. According to the utility model, the vertical calibration of the laser line is guided according to the gravity of the lead weight, the operation is simple and convenient, and meanwhile, the uncertainty caused by previous complicated quality control equipment is also greatly avoided.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of helical tomotherapy system, especially to a quality control device for the upper laser lamp of helical tomotherapy system. BACKGROUND

[0002] There are two sets of laser lamp systems in helical tomotherapy system for daily treatment of patients and equipment quality control. One set of green laser lamp system, also known as fixed laser lamp system, is composed of two fixed cross laser lamps, which are located above the treatment bed and the rear wall of the treatment aperture in the treatment room respectively, and is used for positioning the virtual isocenter in helical tomotherapy system. The intersection point should be strictly located at -700mm in the IEC Y direction of the machine treatment isocenter. The other set of red laser lamp system is composed of five linear laser lamps, which are located on the upper wall, left wall, right wall and rear wall of the treatment room, and is used for accurate positioning of patients during treatment. Among them, the red laser lamp system is calibrated to the green laser lamp at the initial position. All laser lines should be horizontal or vertical at the initial position, and there should be no deflection.

[0003] The vertical calibration of the upper laser lamp in the current fixed laser lamp system needs to use solid water, steel ruler, digital level and paper. The calibration is mainly carried out by observing the position deviation of the laser lamp on the steel ruler at different heights in the vertical direction. The specific steps are as follows:

[0004] a. Raise and lower the treatment bed so that the bed surface is about 25cm below the virtual isocenter of the helical radiation therapy system;

[0005] b. Place the solid water 5x10x50cm vertically on the bed surface, about 1cm away from the virtual isocenter, and use the digital level to check whether the vertical side of the solid water is vertical. If it is not vertical, you can adjust the verticality of the side of the solid water by placing paper under one side of the solid water.

[0006] c. Hold the steel ruler vertically close to the vertical side of the solid water, and read the scale of the laser line at the uppermost and lowermost ends of the solid water. If they are not consistent, adjust the inclination angle of the laser line to make them consistent, and the vertical calibration is completed.

[0007] It should be noted that the vertical calibration of the two laser lines in the IEC X and IEC Y directions of the upper laser lamp is independent, and needs to be verified repeatedly according to the above steps.

[0008] The above calibration method has the following disadvantages:

[0009] 1. Many devices are needed: the measurement accuracy of the digital level is limited, and it needs to be sent for inspection regularly to ensure the effectiveness of the measurement results; the long side of the solid water may be warped due to workmanship problems, causing the measurement results of the digital level to be distorted;

[0010] 2. The operation repeatability is poor: when the solid water is vertically placed, the laser line on the steel ruler is different due to the angle between the steel ruler and the solid water, so that the verticality of the laser line cannot be adjusted accurately. Utility model content

[0011] The utility model aims at solving the prior art's insufficient, and provides a kind of quality control device for laser lamp above helical tomotherapy system.

[0012] To achieve the above object, the utility model uses the following technical scheme:

[0013] A kind of quality control device for laser lamp above helical tomotherapy system, including main module and auxiliary module;

[0014] Auxiliary module includes bottom plate and column fixed on bottom plate;

[0015] Main module includes upper horizontal plate, vertical plate and lower horizontal plate, upper horizontal plate, vertical plate, lower horizontal plate form side U-shaped structure, vertical plate side wall lower end is equipped with extension plate, extension plate, lower horizontal plate are set on the opposite two side walls of vertical plate, extension plate rear side face end is equipped with side plate, first rectangular hole is passed through in upper horizontal plate and first scale line is correspondingly equipped at first rectangular hole place, second rectangular hole is passed through in lower horizontal plate, second scale line corresponding with first scale line position is equipped on lower horizontal plate, clamping block is set on upper horizontal plate, clamping block bottom is connected with connecting rope, connecting rope is sequentially passed through first rectangular hole, second rectangular hole and then connected with lead sinker, circular hole is equipped on vertical plate upper end and circular hole is fixed on column by first bolt, arc-shaped hole is equipped on vertical plate lower end and arc-shaped hole is connected with column by second bolt, side bolt is installed on side plate, and the bolt rod end of side bolt is abutted on the side wall of column.

[0016] The length of upper horizontal plate and lower horizontal plate is 5cm, the height of vertical plate is 55cm, the thickness of upper horizontal plate, vertical plate, lower horizontal plate, extension plate and side plate is 1.5cm.

[0017] The size of first rectangular hole is 3cm×0.5cm×1.5cm;The size of second rectangular hole is 1cm×0.5cm×1.5cm;First rectangular hole and second rectangular hole are correspondingly arranged and left aligned.

[0018] The center of circular hole is 1.2cm from the top end of vertical plate;The diameter of circular hole is 8mm.

[0019] The two ends of arc-shaped hole are set upward, the inner diameter of arc-shaped hole is 8mm, and the center of the circle corresponding to the low end of arc-shaped hole is 1.2cm from the bottom end of vertical plate.

[0020] The length of the connecting rope is 57cm.

[0021] The bottom plate is a cuboid with a size of 2cm*11cm*11cm.

[0022] The column is a cuboid with a size of 60cm*3cm*1.5cm.

[0023] The column is provided with a threaded hole with a diameter of 8mm at a position 1.2cm away from the top end and a position 6.2cm away from the bottom end.

[0024] The beneficial effect of the utility model is that the utility model can greatly reduce the scattered tools involved in quality control work, help to calibrate the verticality of the laser lamp according to the gravity direction, can reduce the random errors caused by complicated quality control equipment and different personnel as much as possible, can trace the equipment stability through numerical recording, and provide data support for the subsequent upgrading of the laser lamp system in the helical tomotherapy system. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of one direction of the utility model;

[0026] Figure 2 It is a structural schematic view of another direction of the utility model;

[0027] Figure 3 It is a structural schematic view of the upper horizontal plate, the vertical plate and the lower horizontal plate in the main mold body;

[0028] Figure 4 It is a structural schematic view of the clamping block, the connecting rope and the lead weight in the main mold body;

[0029] Figure 5 It is a structural schematic view of the auxiliary mold body;

[0030] In the drawing: 1-main mold body; 2-auxiliary mold body;

[0031] 11-upper horizontal plate; 12-vertical plate; 13-lower horizontal plate; 14-extension plate; 15-side plate; 16-first rectangular hole; 17-first scale line; 18-second rectangular hole; 19-second scale line; 110-clamping block; 111-connecting rope; 112-lead weight; 113-circular hole; 114-first bolt; 115-arc-shaped hole; 116-second bolt; 117-side bolt;

[0032] 21-bottom plate; 22-column; 23-threaded hole;

[0033] The utility model will be described in detail below by combining the embodiments thereof with the accompanying drawings. DETAILED DESCRIPTION

[0034] The principles and features of the present application are described below in connection with the accompanying drawings, in which the embodiments are shown for the purpose of explanation only and are not intended to limit the scope of the present application. The present application is described in more detail below in connection with the accompanying drawings. According to the following description, the advantages and features of the present application will be more apparent. It should be noted that the drawings are very simplified and all use non-precise proportions, only for the purpose of conveniently and clearly assisting the description of the embodiments of the present application.

[0035] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed" on another component, it can be directly on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right", and similar terms as used herein are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] The present application is further described below in connection with the accompanying drawings and embodiments:

[0038] A quality control device for a laser lamp above a helical tomotherapy system, as shown in Figure 1 , comprises a main mold body 1 and an auxiliary mold body 2.

[0039] The auxiliary mold body 2, as shown in Figure 5 , comprises a bottom plate 21 and a column 22 fixed on the bottom plate 21. The auxiliary mold body 2 is a "Z" type base composed of the bottom plate 21 and the column 22,

[0040] The bottom plate 21 is a cuboid with a length of 2 cm, a width of 11 cm and a height of 11 cm.

[0041] The column 22 is a cuboid with a length of 60 cm, a width of 3 cm and a height of 1.5 cm.

[0042] The column 22 is provided with a threaded hole 23 with a diameter of 8 mm at a distance of 1.2 cm from the top end and at a distance of 6.2 cm from the bottom end, respectively, for loading the main mold body 1.

[0043] The main mold body 1, as shown in Figure 2 , Figure 3 ,Figure 4 As shown, it comprises an upper horizontal plate 11, a vertical plate 12 and a lower horizontal plate 13, the upper horizontal plate 11, the vertical plate 12 and the lower horizontal plate 13 form a lateral U-shaped structure, the vertical plate 12 is provided with an extension plate 14 at the lower end of the side wall, the extension plate 14 and the lower horizontal plate 13 are arranged on the opposite two side walls of the vertical plate 12, the rear side end of the extension plate 14 is provided with a lateral plate 15, the upper horizontal plate 11 is provided with a first rectangular hole 16 and a first scale line 17 corresponding to the first rectangular hole 16, the lower horizontal plate 13 is provided with a second rectangular hole 18, and the lower horizontal plate 13 is provided with a second scale line 19 corresponding to the position of the first scale line 17, the upper horizontal plate 11 is provided with a clamping block 110, the clamping block 110 is connected with a connecting rope 111, the connecting rope 111 is sequentially connected with a lead weight 112 after passing through the first rectangular hole 16 and the second rectangular hole 18, the upper end of the vertical plate 12 is provided with a circular hole 113, and the circular hole 113 is fixed on the stand column 22 through a first bolt 114, the lower end of the vertical plate 12 is provided with an arc-shaped hole 115, and the arc-shaped hole 115 is connected with the stand column 22 through a second bolt 116, the lateral plate 15 is installed with a lateral bolt 117, and the bolt rod end of the lateral bolt 117 abuts against the side wall of the stand column 22.

[0044] The main body 1 is composed of two parts which can be disassembled and assembled, one part is a "ユ" shaped main body, that is, the upper horizontal plate 11, the vertical plate 12, the lower horizontal plate 13 and the extension plate 14; the other part is a detachable lead straight module with the lead weight 112, which has the characteristics of flexible assembly and can be loaded through the upper horizontal plate 11, the lower horizontal plate 13, the first rectangular hole 16 and the second rectangular hole 18.

[0045] The first rectangular hole 16 and the second rectangular hole 18 can make the laser line pass vertically.

[0046] The length of the upper horizontal plate 11 and the lower horizontal plate 13 is 5 cm, the height of the vertical plate 12 is 55 cm, and the thickness of the upper horizontal plate 11, the vertical plate 12, the lower horizontal plate 13, the extension plate 14 and the lateral plate 15 is 1.5 cm.

[0047] The size of the first rectangular hole 16 is 3 cm x 0.5 cm x 1.5 cm; the size of the second rectangular hole 18 is 1 cm x 0.5 cm x 1.5 cm; the first rectangular hole 16 and the second rectangular hole 18 are arranged in position and left alignment.

[0048] The center of the circular hole 113 is 1.2 cm away from the top end of the vertical plate 12; the diameter of the circular hole 113 is 8 mm.

[0049] The two ends of the arc-shaped hole 115 are arranged upward, the inner diameter of the arc-shaped hole 115 is 8 mm, and the center of the low end of the arc-shaped hole 115 corresponding to the circle is 1.2 cm away from the bottom end of the vertical plate 12.

[0050] The arc-shaped hole 115 is arranged to realize the slight adjustment of the verticality of the vertical plate 12.

[0051] The length of the connecting rope 111 is 57cm.

[0052] The auxiliary mold body 2 comprises a bottom plate 21 and a stand 22 fixed on the bottom plate 21.

[0053] The bottom plate 21 is a cuboid with a length of 2cm, a width of 11cm and a height of 11cm.

[0054] The stand 22 is a cuboid with a length of 60cm, a width of 3cm and a height of 1.5cm.

[0055] The stand 22 is provided with a threaded hole 23 with a diameter of 8mm at a position 1.2cm away from the top end and a position 6.2cm away from the bottom end.

[0056] The verticality adjustment process of the upper laser lamp is as follows:

[0057] The verticality of the main mold body 1 is adjusted by rotating the side bolt 117, and the laser line can pass through the first rectangular hole 16 and the second rectangular hole 18 of the main mold body 1.

[0058] The introduction of the utility model can greatly reduce the scattered tools involved in the quality control work, and help to calibrate the verticality of the laser lamp according to the gravity direction, so as to reduce the random errors caused by complicated quality control equipment and different personnel as much as possible.

[0059] The utility model is described above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, and various improvements adopting the method concept and technical scheme of the utility model or direct application in other occasions without improvement are all within the protection scope of the utility model.

Claims

1. A quality control device for a laser light above a helical tomotherapy system, characterized in that, The main mold body (1) and the auxiliary mold body (2) are included. The auxiliary mold body (2) includes a bottom plate (21) and a column (22) fixed on the bottom plate (21). The main mold body (1) includes an upper transverse plate (11), a vertical plate (12) and a lower transverse plate (13), the upper transverse plate (11), the vertical plate (12) and the lower transverse plate (13) form a side U-shaped structure, the vertical plate (12) is provided with an extension plate (14) at the lower end of the side wall, the extension plate (14) and the lower transverse plate (13) are arranged on the opposite two side walls of the vertical plate (12), the rear side end of the extension plate (14) is provided with a side plate (15), the upper transverse plate (11) is provided with a first rectangular hole (16) penetrating therethrough and is provided with a first scale line (17) corresponding to the first rectangular hole (16), the lower transverse plate (13) is provided with a second rectangular hole (18) penetrating therethrough, the lower transverse plate (13) is provided with a second scale line (19) corresponding to the position of the first scale line (17), the upper transverse plate (11) is provided with a clamping block (110), the clamping block (110) is connected with a connecting rope (111), the connecting rope (111) sequentially passes through the first rectangular hole (16) and the second rectangular hole (18) and is connected with a lead weight (112), the upper end of the vertical plate (12) is provided with a circular hole (113) and the circular hole (113) is fixed on the column (22) through a first bolt (114), the lower end of the vertical plate (12) is provided with an arc-shaped hole (115) and the arc-shaped hole (115) is connected with the column (22) through a second bolt (116), the side plate (15) is provided with a side bolt (117), and the bolt rod end of the side bolt (117) abuts against the side wall of the column (22).

2. A quality control device for a laser light above a helical tomotherapy system according to claim 1, wherein, The length of the upper transverse plate (11) and the lower transverse plate (13) is 5 cm, the height of the vertical plate (12) is 55 cm, and the thickness of the upper transverse plate (11), the vertical plate (12), the lower transverse plate (13), the extension plate (14) and the side plate (15) is 1.5 cm.

3. A quality assurance device for a laser light above a helical tomotherapy system according to claim 2, wherein, The size of the first rectangular hole (16) is 3 cm*0.5 cm*1.5 cm; the size of the second rectangular hole (18) is 1 cm*0.5 cm*1.5 cm; the first rectangular hole (16) and the second rectangular hole (18) are arranged in position and left alignment.

4. A quality assurance device for a laser light above a helical tomotherapy system according to claim 3, wherein, The center of the circular hole (113) is 1.2 cm away from the top end of the vertical plate (12); and the diameter of the circular hole (113) is 8 mm.

5. A quality assurance device for a laser light above a helical tomotherapy system according to claim 4, wherein, The two ends of the arc-shaped hole (115) are arranged upward, the inner diameter of the arc-shaped hole (115) is 8 mm, and the center of the low end of the arc-shaped hole (115) is 1.2 cm away from the bottom end of the vertical plate (12).

6. A quality assurance device for a laser light above a helical tomotherapy system according to claim 5, wherein, The length of the connecting rope (111) is 57 cm.

7. A quality assurance device for a laser light above a helical tomotherapy system according to claim 6, wherein, The bottom plate (21) is a cuboid with a length of 2 cm, a width of 11 cm and a height of 11 cm.

8. A quality assurance device for a laser light above a helical tomotherapy system according to claim 7, wherein, The column (22) is a cuboid with a length of 60 cm, a width of 3 cm and a height of 1.5 cm.

9. A quality assurance device for a laser light above a helical tomotherapy system according to claim 8, wherein, The column (22) is provided with a threaded hole (23) with a diameter of 8 mm at a position 1.2 cm away from the top end and a position 6.2 cm away from the bottom end.