Laser lamp calibration phantom

Abstract

The utility model relates to a kind of laser lamp verification mould, including mould main body, level, adjusting support leg and support leg drive assembly, cross mark area is provided on mould main body upper surface and four sides, identification metal ball is provided at the center of mould main body, level is set on mould main body upper surface, four diagonal places of mould main body lower surface are provided with screw hole, adjusting support leg includes support base and rotating column, rotating column lower end is hinged with support base, rotating column outer circumferential surface is provided with external thread, external thread and screw hole are adapted, support leg drive assembly is used to drive support leg to adjust up and down, the abrasion of this mould can be avoided when leveling operation.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a laser lamp calibration model. Background Technology

[0002] The accelerator is a crucial component of medical equipment, utilizing a positioning laser light in the machine room for patient positioning. This positioning laser light is mounted on the wall of the machine room via an adjustable base, allowing for adjustment of its position and angle. Under normal circumstances, the laser's alignment point should be consistent with the accelerator's isocenter. However, factors such as the laser's quality, installation, and vibrations around the machine room can cause the laser to deviate from its original position or angle, resulting in a misalignment between the laser's alignment point and the accelerator's isocenter. Therefore, the laser needs adjustment to ensure that the patient's planned isocenter coincides with the accelerator's isocenter after positioning using the positioning laser light.

[0003] In existing technologies, a verification module (quality control module) is used to verify the laser light.

[0004] Chinese invention patent with publication number CN113181566A discloses a quality control phantom for accelerator laser lamp and OBI precision detection, including a cube positioning platform. The cube positioning platform is based on the accelerator spatial coordinate system. A laser rangefinder level is provided on the upper side of the cube positioning platform, and a hollow sphere is provided at its center.

[0005] However, the levelness of the cube positioning platform in patent CN113181566A depends entirely on the levelness of the medical bed and lacks a leveling adjustment function.

[0006] Chinese utility model patent CN212491188U discloses a phantom for accelerator quality control, comprising a cube with crosshair coordinate lines on each surface. The cube mainly consists of a base plate and a hollow main body that is attached to the base plate, both formed using 3D printing. The base plate has slots on its outer periphery to hold the hollow main body attached to it; the lower part of the base plate has at least three leveling feet for horizontal adjustment when needed.

[0007] Chinese invention patent CN114088345A discloses a collimator-based positioning laser light quality control device and its usage method. The device includes a support base, a calibration plate, and two collimating plates. A leveling screw is located at the bottom of the support base, and a level is mounted on the support base. Through the combined adjustment of the leveling screw and the level, the horizontal placement of the support base can be ensured.

[0008] Although the aforementioned patents achieve the horizontal adjustment function, during horizontal adjustment, the horizontal adjustment foot in patent CN212491188U and the horizontal adjustment screw in patent CN114088345A both rotate as a whole. Because the bottom of the horizontal adjustment foot and the horizontal adjustment screw rotates and rubs against the surface of the medical bed, the torque required to rotate and adjust the horizontal adjustment foot and the horizontal adjustment screw is large, making operation inconvenient and causing wear and tear on the surface of the medical bed, which is not conducive to the maintenance of the medical bed.

[0009] Therefore, it is necessary to provide a laser lamp calibration model that can avoid wear and tear on the medical bed during leveling operations. Utility Model Content

[0010] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a laser lamp calibration model that can avoid wear and tear on the laser lamp calibration model of the medical bed during the leveling operation.

[0011] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a laser lamp calibration model, including a model body, a level, adjustable legs, and a leg driving assembly. The upper surface and four sides of the model body are provided with cross-shaped marking areas. An identification metal ball is provided at the center of the model body. The level is provided on the upper surface of the model body. Threaded holes are provided at the four diagonal points of the lower surface of the model body. The adjustable legs include a support base and a rotating column. The lower end of the rotating column is hinged to the support base. The outer circumferential surface of the rotating column is provided with external threads, which are adapted to the threaded holes. The leg driving assembly is used to drive the legs to adjust up and down.

[0012] Furthermore, the main body of the mold is in the shape of a quadrangular prism, and there are two levels, which are set on both sides of the upper surface of the main body of the mold.

[0013] Furthermore, the main body of the mold includes a base, the upper surface of which is formed with an I-beam, and the upper surface of the support base is formed with two strip grooves. The two strip grooves are respectively located on both sides of the vertical part of the I-beam. The two strip grooves intersect with the vertical part of the I-beam to form a cross-shaped marking area. The cross-shaped marking areas on the four sides are respectively located on two sides of the vertical part of the I-beam and two sides of the vertical and horizontal parts of the I-beam.

[0014] Furthermore, the number of the level instruments is two or three; when the number of the level instruments is two, the two level instruments are placed on the upper surface of the horizontal part of the I-beam; when the number of the level instruments is three, the three level instruments are placed on the upper surface of the two horizontal parts of the I-beam and the upper surface of the vertical part of the I-beam.

[0015] Furthermore, the outrigger drive assembly includes a deflector wheel, which is disposed on the circumferential surface of the rotating column near the support base, and the deflector wheel is fixedly connected to the rotating column.

[0016] Furthermore, the support leg drive assembly includes four drive gears, four driven gears, and four drive motors. The four drive motors are respectively disposed on the lower surface of the mold body and close to the four rotating columns. The output end of each drive motor is provided with a drive gear. The four driven gears are respectively sleeved and locked onto the circumferential surface of the rotating columns, and the drive gears and driven gears mesh with each other.

[0017] Furthermore, an installation groove is formed on the upper surface of the support base, and a bearing is provided in the installation groove. The lower end of the rotating column is adapted to and fixedly connected to the inner ring of the bearing.

[0018] Furthermore, a retaining block is formed on the inner side of the bearing inner ring, and a strip-shaped hole penetrating the sidewall is formed on the lower surface of the rotating column, with the retaining block matching the strip-shaped hole.

[0019] Furthermore, a support ring is provided at the bottom of the inner ring of the bearing, and the lower surface of the rotating column is in contact with the support ring.

[0020] Furthermore, the lower surface of the support base is provided with an anti-slip washer, and the anti-slip washer is detachably connected to the lower surface of the support base.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In this invention, the bottom of the mold body is provided with adjustable support legs. The adjustable support legs include a support base and a rotating column. The rotating column is threadedly connected to the lower surface of the mold body. The rotating column is driven to rotate by the support leg drive assembly to achieve horizontal adjustment of the mold body. Moreover, while the rotating column rotates, the base does not rotate with the rotating column because the connection between the bottom of the rotating column and the base is hinged, so there is no wear. During the adjustment process, a through-level is used to determine whether the mold body is level. Attached Figure Description

[0023] Figure 1 These are three-dimensional structural diagrams of Embodiments 1 and 3 of this utility model;

[0024] Figure 2 These are three-dimensional structural diagrams of Embodiments 2 and 4 of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the outrigger drive assembly and the adjustable outrigger in Embodiments 1 and 2 of this utility model;

[0026] Figure 4This is a cross-sectional view of the outrigger drive assembly and the adjustable outrigger in Embodiments 1 and 2 of this utility model.

[0027] Figure 5 This is a cross-sectional view of the outrigger drive assembly and the adjustable outrigger in Embodiments 3 and 4 of this utility model.

[0028] Figure 6 This is a cross-sectional view of the support base in this utility model;

[0029] Figure 7 This is a cross-sectional view of the metal ball identification structure in this utility model;

[0030] Figure 8 This is a schematic diagram of the control flow structure of the drive motor in Embodiments 3 and 4 of this utility model.

[0031] The markings in the diagram are as follows: 1. Main body of the mold; 11. Cross-shaped marking area; 12. Base; 13. I-beam platform; 14. Identification metal ball; 2. Level; 3. Adjustable support leg; 31. Support base; 311. Bearing; 3111. Locking block; 3112. Support ring; 312. Anti-slip washer; 32. Rotating column; 321. Strip hole; 4. Support leg drive assembly; 41. Actuating wheel; 42. Drive motor; 421. Driving gear; 422. Driven gear. Detailed Implementation

[0032] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0033] Example 1

[0034] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, this embodiment provides a laser lamp calibration model, including a model body 1, a level 2, adjustable legs 3, and a leg drive assembly 4.

[0035] The upper surface and four sides of the main body 1 of the mold are provided with cross-shaped marking areas 11. Specifically, the cross-shaped marking areas 11 are composed of cross-shaped grooves. The center of the main body 1 of the mold is provided with an identification metal ball 14. Specifically, the main body 1 of the mold is a quadrangular prism. There are two levels 2 and they are set on both sides of the upper surface of the main body 1. The levels 2 are the levels commonly used in the prior art, which will not be described in detail here.

[0036] Threaded holes are provided at the four diagonal corners of the lower surface of the main body 1. The adjustable support leg 3 includes a support base 31 and a rotating column 32. The lower end of the rotating column 32 is hinged to the support base 31. Specifically, a mounting groove is formed on the upper surface of the support base 31, and a bearing 311 is provided in the mounting groove. The lower end of the rotating column 32 is adapted to and fixedly connected to the inner ring of the bearing 311. Further, a locking block 3111 is formed on the inward side of the inner ring of the bearing 311, and a strip hole 321 penetrating the side wall is formed on the lower surface of the rotating column 32. The locking block 3111 is adapted to the strip hole 321, and a support ring 3112 is provided at the bottom of the inner ring of the bearing 311. The lower surface of the rotating column 32 is in contact with the support ring 3112. During installation, first install the bearing 311 into the mounting groove, then align the strip hole 321 on the lower surface of the rotating column 32 with the locking block 3111 and insert it until the lower surface of the rotating column 32 abuts against the support ring 3112. When turning, the rotation is achieved by the locking block 3111 abutting against the side wall of the strip hole 321. The function of the support ring 3112 is to bear the weight of the rotating column 32.

[0037] The outer circumferential surface of the rotating column 32 is provided with an external thread, which is compatible with the threaded hole. The support leg drive assembly 4 is used to drive the support leg to adjust up and down. The support leg drive assembly 4 includes a deflector wheel 41, which is disposed on the circumferential surface of the rotating column 32 near the support base 31. The deflector wheel 41 is fixedly connected to the rotating column 32, and the deflector wheel 41 and the rotating column 32 are integrally formed for support. By deflecting the deflector wheel 41, the rotating column 32 can be rotated forward and backward, thereby adjusting the height of the main body 1 of the mold.

[0038] Preferably, an anti-slip washer 312 is provided on the lower surface of the support base 31. The anti-slip washer 312 is detachably connected to the lower surface of the support base 31. Specifically, the anti-slip washer 312 is connected to the lower surface of the support base 31 by screws.

[0039] Example 2

[0040] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the difference between this embodiment and embodiment 1 lies in the different structure of the main body 1. The main body 1 includes a base 12, and an I-beam 13 is formed on the upper surface of the base 12. Two strip grooves are formed on the upper surface of the support base 31. The two strip grooves are located on both sides of the vertical part of the I-beam 13. The two strip grooves intersect with the vertical part of the I-beam 13 to form a cross mark area 11. The cross mark areas 11 located on the four sides are located on the two sides of the vertical part of the I-beam 13 and the two sides of the vertical and horizontal parts of the I-beam 13.

[0041] In this embodiment, the number of level instruments 2 is two or three; when the number of level instruments 2 is two, the two level instruments 2 are placed on the upper surface of the horizontal part of the I-beam 13; when the number of level instruments 2 is three, the three level instruments 2 are placed on the upper surface of the two horizontal parts and the upper surface of the vertical part of the I-beam 13.

[0042] Example 3

[0043] like Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the difference between this embodiment and Embodiment 1 lies in the structure of the support leg drive assembly 4. The support leg drive assembly 4 includes four driving gears 421, four driven gears 422, and four drive motors 42. The four drive motors 42 are respectively disposed on the lower surface of the mold body 1 and are respectively close to the four rotating columns 32. Specifically, the lower surface of the mold body 1 is provided with four receiving grooves, and the drive motors 42 are installed in the receiving grooves. The output end of the drive motors 42 is provided with driving gears 421. The four driven gears 422 are respectively sleeved and locked on the circumferential surface of the rotating columns 32. Specifically, the driven gears 422 are connected to the rotating columns 32 through wedges, and the driving gears 421 and driven gears 422 mesh with each other.

[0044] In this embodiment, the rotating column 32 is driven by the drive motor 42, which has high accuracy in raising and lowering, and saves time and effort.

[0045] Example 4

[0046] like Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the difference between this embodiment and embodiment 2 lies in the structure of the support leg drive assembly 4. The support leg drive assembly 4 includes four driving gears 421, four driven gears 422, and four drive motors 42. The four drive motors 42 are respectively arranged on the lower surface of the mold body 1 and are close to the four rotating columns 32. Specifically, the lower surface of the mold body 1 is provided with four receiving grooves, and the drive motors 42 are installed in the receiving grooves. The output end of the drive motors 42 is provided with driving gears 421. The four driven gears 422 are respectively sleeved and locked on the circumferential surface of the rotating columns 32, and the driving gears 421 and driven gears 422 mesh with each other.

[0047] The working principle of the four embodiments is as follows: Place two or more level instruments 2 on the upper surface of the mold body 1. According to the level display of the level instruments 2, adjust the four rotating columns 32 of the mold body 1 until the two level instruments 2 reach a horizontal state. The light emitted by the positioning laser lamp illuminates the designated cross mark area 11 to determine the position and angle of the positioning laser lamp. After confirmation, the accelerometer scans the mold body 1. By observing the scan image, determine whether the identification metal ball 14 coincides with the center of the accelerometer. After the center of the accelerometer coincides with the metal ball, place the level instrument 2 on the upper surface of the mold body 1 again to check whether a horizontal state is reached. If a horizontal state is not reached, adjust the rotating columns 32. If a horizontal state is reached, remove the level instrument 2 and it can be used.

[0048] In embodiments 3 and 4 of this scheme, a drive motor 42 is used to drive the rotating column 32 to rotate. Each drive motor 42 is connected to an external centralized control device, which can be a computer, controller, etc. The centralized control device has a corresponding control unit or control module. When the control unit or control module receives an instruction, it can realize automatic control. Specifically, upon receiving the steering adjustment information transmitted by the instruction, it controls the corresponding drive motor 42 to rotate in the forward or reverse direction, and calculates the angle by which the drive motor 42 needs to drive the driven gear 422 to rotate according to the distance adjustment information transmitted by the instruction. The method of using a control device to control the motor operation is existing technology and will not be described in detail here. The method of calculating the required adjustment height based on the tilt angle transmitted by the angle sensor or level 2, and then adjusting it by the motor, is also existing technology and will not be described in detail here.

[0049] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A laser lamp verification phantom, characterized in that: The device includes a main body, a level, adjustable legs, and a leg drive assembly. The main body has cross-shaped markings on its upper surface and four sides. An identification metal ball is located at the center of the main body. The level is located on the upper surface of the main body. Threaded holes are located at the four diagonal points on the lower surface of the main body. The adjustable legs include a support base and a rotating column. The lower end of the rotating column is hinged to the support base. The outer circumference of the rotating column has external threads that are compatible with the threaded holes. The leg drive assembly is used to drive the legs for vertical adjustment.

2. The laser lamp calibration model according to claim 1, characterized in that: The main body of the mold is in the shape of a quadrangular prism, and there are two levels, which are set on both sides of the upper surface of the main body of the mold.

3. The laser lamp calibration model according to claim 1, characterized in that: The main body of the mold includes a base, on the upper surface of which an I-beam is formed. On the upper surface of the support base, two strip grooves are formed. The two strip grooves are located on both sides of the vertical part of the I-beam. The two strip grooves intersect with the vertical part of the I-beam to form a cross-shaped marking area. The cross-shaped marking areas on the four sides are located on two sides of the vertical part of the I-beam and two sides of the vertical and horizontal parts of the I-beam.

4. The laser lamp calibration model according to claim 3, characterized in that: The number of the level instruments is two or three; when the number of the level instruments is two, the two level instruments are placed on the upper surface of the horizontal part of the I-beam; when the number of the level instruments is three, the three level instruments are placed on the upper surface of the two horizontal parts and the upper surface of the vertical part of the I-beam.

5. The laser lamp calibration model according to claim 1, characterized in that: The outrigger drive assembly includes a deflector wheel, which is disposed on the circumferential surface of the rotating column near the support base, and the deflector wheel is fixedly connected to the rotating column.

6. The laser lamp calibration model according to claim 1, characterized in that: The outrigger drive assembly includes four drive gears, four driven gears, and four drive motors. The four drive motors are respectively located on the lower surface of the mold body and close to the four rotating columns. The output end of each drive motor is provided with a drive gear. The four driven gears are respectively sleeved and locked onto the circumferential surface of the rotating columns, and the drive gears and driven gears mesh with each other.

7. The laser lamp calibration phantom according to claim 1, characterized in that: The upper surface of the support base has a mounting groove, and a bearing is installed in the mounting groove. The lower end of the rotating column is adapted to and fixedly connected to the inner ring of the bearing.

8. A laser lamp calibration phantom according to claim 7, characterized in that: The inner ring of the bearing has a retaining block on its inward-facing side, and the lower surface of the rotating column has a strip-shaped hole that penetrates the side wall. The retaining block is adapted to the strip-shaped hole.

9. A laser lamp calibration phantom according to claim 8, characterized in that: The bearing inner ring is provided with a support ring at its bottom, and the lower surface of the rotating column is in contact with the support ring.

10. A laser lamp calibration model according to claim 1, characterized in that: The lower surface of the support base is provided with an anti-slip pad, which is detachably connected to the lower surface of the support base.

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