A detector device

Abstract

The utility model relates to a kind of detector device, including base, telescopic mechanism and semiconductor detector, telescopic mechanism includes telescopic column, telescopic column is set on base and protrudes base upper surface, semiconductor detector includes detector shell, hinging is carried out between the telescopic end of telescopic column and the lower surface of detector shell, the upper surface of detector shell has irradiation window, the detector shell of semiconductor detector is connected with base by telescopic column, telescopic end and the detector shell between telescopic column are connected using the way of hinging, so that detector shell can be adjusted horizontally angle, by telescoping of telescopic column, to drive semiconductor detector to move up and down, it is convenient to adjust the distance between irradiation window and irradiation lamp, it is easy to operate, and adjustment efficiency is high, improve work efficiency.

Description

Technical Field

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

[0002] In the field of oncology, the radiation dose of an accelerator needs to be calibrated every morning to ensure the quality of radiation during radiotherapy. Current technology typically uses semiconductor detectors to calibrate the accelerator's radiation dose, which includes both radiation intensity and exposure time. An illumination lamp is mounted on the accelerator, forming a square illumination field. The lamp rotates in a ring with the accelerator, and during calibration, it is preferably positioned directly above the accelerator. The semiconductor detector includes a square illumination window, approximately 20cm x 20cm in size, which matches the illumination field of the lamp. The semiconductor detector includes multiple ionization chamber detectors. One ionization chamber detector located on the central axis measures the stability of the output dose. Four ionization chamber detectors located approximately 8cm from the center on the X and Y axes measure the uniformity and symmetry of the illumination field. Multiple ionization chamber detectors are arranged at the corners and center of the illumination window for flatness and radiation energy detection.

[0003] When calibrating using a semiconductor detector, rotate the illumination lamp above the circular track, place the semiconductor detector on the medical bed, and then move the medical bed to bring the semiconductor detector below the accelerator's illumination lamp. Before turning on the accelerator, the illumination field needs to be aligned. Specifically, turn on the illumination lamp to illuminate the illumination window below. The user visually checks; if the illumination field of the lamp is roughly aligned with the edge of the illumination window, the semiconductor detector's current position is appropriate, and the accelerator can be turned on for dose detection calibration. If the illumination field is not aligned with the edge of the illumination window, the semiconductor detector needs to be adjusted.

[0004] Specifically: If the illumination lamp is located above the illumination window, and the center of the illumination window and the center of the illumination lamp are only slightly misaligned in the axial direction, that is, misaligned in the front-back direction, then the illumination field cannot be aligned with the front and back edges of the illumination window. The existing operating method is to manually push the semiconductor detector on the medical bed to align the illumination field with the front and back edges of the illumination window.

[0005] If the illumination lamp is located diagonally above the illumination window, and the center of the illumination window and the center of the illumination lamp are slightly misaligned radially, that is, misaligned in the left and right directions, then the illumination field and the left and right edges of the illumination window cannot be aligned. The existing operating method is to continue rotating the accelerator to rotate the illumination lamp to directly above the semiconductor detector, or to swing the medical bed to make the semiconductor detector and the illumination lamp face each other. This operating method is inefficient.

[0006] In the prior art, Chinese utility model patent with publication number CN201226027Y discloses an intensity-modulated dose distribution map detector, which includes a detector panel, an illumination window on the top surface of the detector panel, and multiple detectors distributed in the detector panel.

[0007] Chinese utility model patent with announcement number CN211698222U discloses a detector matrix device for radiation dose measurement, including a detection part and an auxiliary part. The top surface of the detection part has an irradiation window, and the detection part has an ionization chamber.

[0008] The defects of the above two patents are as follows:

[0009] 1. The detector panel or probe cannot be angled. When the illumination lamp is diagonally above the illumination window, the illumination field cannot be aligned with the left and right edges of the illumination window. The only way to make the detector panel or probe rotate is to continue rotating the accelerator to drive the illumination lamp to rotate or to swing the medical bed to drive the detector panel or probe to rotate, so that it is aligned with the illumination window. This is inconvenient to operate and has low adjustment efficiency.

[0010] Second, the existing detector panel or detection section cannot be height adjusted. If it is necessary to adjust the distance between the irradiation window and the irradiation lamp to calibrate the irradiation dose of the target area at different heights, it is necessary to adjust the up and down movement of the medical bed, which is inconvenient and has low adjustment efficiency.

[0011] In view of this, this solution was developed. Utility Model Content

[0012] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a detector device, wherein the semiconductor detector can be angled and height adjusted relative to the base, so as to facilitate the adjustment of the semiconductor detector to align its illumination window with the illumination lamp, and also to facilitate the adjustment of the distance between the illumination window and the illumination lamp. It is easy to operate, has high adjustment efficiency, and improves work efficiency.

[0013] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a detector device, including a base, a telescopic mechanism, and a semiconductor detector. The telescopic mechanism includes a telescopic column, which is disposed on the base and extends out of the upper surface of the base. The semiconductor detector includes a detector housing, the lower surface of which is hinged to the telescopic end of the telescopic column. The upper surface of the detector housing has an illumination window.

[0014] Furthermore, the telescopic mechanism also includes a rotating sleeve, a driving body, and an anti-rotation post. The outer circumferential surface of the telescopic post is provided with an external thread, the inner circumferential surface of the rotating sleeve is provided with an internal thread, the telescopic post is located inside the rotating sleeve, a limiting hole is formed on the lower surface of the telescopic post, the anti-rotation post extends into the limiting hole, and the driving body is used to drive the rotating sleeve to rotate.

[0015] Furthermore, the driving body includes a gear set and a drive motor, and a first toothed ring is provided on the outer circumferential surface of the rotating sleeve. The drive motor and the first toothed ring are transmitted through the gear set.

[0016] Furthermore, the driving body includes a worm and a drive motor, a first worm wheel is provided on the outer circumferential surface of the rotating sleeve, the worm is arranged laterally, the worm meshes with the first worm wheel, and the drive motor is used to drive the worm to rotate.

[0017] Furthermore, a ball head is formed on the telescopic column, and a spherical mounting groove is formed on the lower surface of the detector housing. The ball head is located in the spherical mounting groove and is rotatably connected.

[0018] Furthermore, a first friction pad is attached to the surface of the ball head, and a second friction pad is attached to the inner surface of the spherical mounting groove.

[0019] Furthermore, the vertical cross-sectional projection shape of the lower opening of the spherical mounting groove is a flared, trumpet-shaped opening.

[0020] Furthermore, one side of the spherical mounting groove penetrates the side wall of the detector housing.

[0021] Furthermore, the horizontal cross-sectional shape of the anti-rotation column is square.

[0022] Furthermore, the base includes an upper cover plate and a lower seat body, the lower seat body forming an installation chamber, and the rotating sleeve, driving body and anti-rotation column located in the installation chamber.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a detector device that connects the detector housing of a semiconductor detector to a base via a telescopic column. The telescopic end of the telescopic column is connected to the detector housing by a hinge, so the detector housing can be adjusted horizontally. By extending and retracting the telescopic column, the semiconductor detector can be moved up and down, which facilitates the adjustment of the distance between the illumination window and the illumination lamp. The device is easy to operate, has high adjustment efficiency, and improves work efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a detector device according to the present invention;

[0026] Figure 2 This is a cross-sectional view of a detector device according to the present invention;

[0027] Figure 3 This is a cross-sectional view of the ball bearing mounting groove location in this utility model;

[0028] Figure 4 This is a cross-sectional view of the ball head and telescopic column in this utility model;

[0029] Figure 5 This is a cross-sectional structural diagram of the limiting hole in this utility model;

[0030] Figure 6 This is a partially enlarged cross-sectional view of the driving body in this utility model;

[0031] Figure 7 This is a cross-sectional structural diagram of the anti-rotation column in this utility model;

[0032] Figure 8 This is a three-dimensional structural diagram of the semiconductor detector in this utility model;

[0033] Figure 9 This is a front view structural diagram of the housing channel location in this utility model;

[0034] Figure 10 This utility model Figure 8 A schematic diagram of the cross-sectional structure along the AA direction;

[0035] Figure 11 This is a three-dimensional structural diagram of the top block of the hidden channel in the detector housing of this utility model;

[0036] Figure 12 This is a partially enlarged structural diagram of the opening of the shell channel in this utility model;

[0037] Figure 13 This utility model Figure 11 A schematic diagram of the cross-sectional structure along the BB direction;

[0038] Figure 14 This is a three-dimensional structural diagram of the channel top block in this utility model;

[0039] Figure 15 This utility model Figure 14 A schematic diagram of the cross-sectional structure along the CC direction.

[0040] The diagram shows the following markings: 1. Base; 11. Lower seat; 12. Upper cover plate; 13. Anti-rotation column; 131. Tip; 14. Mounting chamber; 2. Telescopic mechanism; 21. Rotating sleeve; 22. Telescopic column; 221. Limiting hole; 3. Drive body; 31. Drive motor; 32. Gear set; 321. Driven gear; 322. First gear ring; 4. Semiconductor detector; 41. Detector housing; 411. Flared opening; 42. Illumination window; 43. Housing channel; 431. Circular channel; 432. Trapezoidal channel; 433. Positioning groove; 44. Channel top block; 441. Circular top block; 442. Trapezoidal top block; 443. Connecting piece; 5. Bearing; 51. Spherical mounting groove; 52. Ball head; 53. First friction plate; 54. Second friction plate. Detailed Implementation

[0041] 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.

[0042] like Figures 1-15 As shown, this embodiment provides a detector device, including a base 1, a telescopic mechanism 2, and a semiconductor detector 4.

[0043] The base 1 includes an upper cover plate 12 and a lower seat body 11. The lower seat body 11 forms an installation chamber 14. The upper cover plate 12 and the lower seat body 11 are connected by screws.

[0044] The telescopic mechanism 2 is used to drive the semiconductor detector 4 to move up and down. Specifically, the telescopic mechanism 2 includes a telescopic column 22, a rotating sleeve 21, a driving body 3, and an anti-rotation column 13. The bottom of the mounting chamber 14 is formed with an annular groove, and the upper cover is formed with a through hole. The bottom of the rotating sleeve 21 is located in the annular groove and the upper end is located in the through hole. Preferably, a bearing 5 is provided between the rotating sleeve 21, the through hole, and the annular groove. The outer circumferential surface of the telescopic column 22 is provided with an external thread, and the inner circumferential surface of the rotating sleeve 21 is provided with an internal thread. The telescopic column 22 is located inside the rotating sleeve 21. A limiting hole 221 is formed on the lower surface of the telescopic column 22. The anti-rotation column 13 extends into the limiting hole 221. Specifically, the bottom of the annular groove is provided with a through hole, and the anti-rotation column 13 extends into the limiting hole 221 from the through hole. The limiting hole 221 is connected to the lower seat body 11 by screws. The horizontal cross-sectional shape of the anti-rotation column 13 is square.

[0045] Preferably, the upper end of the anti-rotation post 13 has a pointed tip 131, which facilitates the insertion of the anti-rotation post 13 into the limiting hole 221 of the telescopic post 22.

[0046] The driving body 3 is used to drive the rotating sleeve 21 to rotate. Specifically, the driving body 3 includes a gear set 32 ​​and a driving motor 31. A first toothed ring 322 is provided on the outer circumferential surface of the rotating sleeve 21. The driving motor 31 and the first toothed ring 322 are transmitted through the gear set 32. The gear set 32 ​​includes a driving gear and a driven gear 321, as shown in the figure. The output end of the driving motor 31 is provided with a driving gear. The driving gear and the driven gear 321 mesh. The driven gear 321 and the first toothed ring 322 mesh. The rotation of the driving motor 31 drives the rotating sleeve 21 to rotate, thereby driving the telescopic column 22 to extend and retract up and down.

[0047] Another embodiment: The drive body 3 includes a worm and a drive motor 31. A first worm wheel is provided on the outer peripheral surface of the rotating sleeve 21. The worm is arranged laterally and meshes with the first worm wheel. The drive motor 31 is used to drive the worm to rotate.

[0048] In this scheme, the drive motor 31 rotates, which drives the rotating sleeve 21 to rotate, thereby driving the telescopic column 22 to extend and retract up and down, thus realizing the up and down adjustment of the semiconductor detector 4.

[0049] The semiconductor detector 4 includes a detector housing 41. The lower surface of the detector housing 41 is hinged to the telescopic end of the telescopic column 22. Specifically, a ball head 52 is formed on the telescopic column 22, and a spherical mounting groove 51 is formed on the lower surface of the detector housing 41. One side of the spherical mounting groove 51 penetrates the side wall of the detector housing 41 to form a housing channel 43. The housing channel 43 includes a circular channel 431 and a trapezoidal channel 432. The vertical cross-sectional projection shape of the lower opening of the spherical mounting groove 51 is a flared opening 411 in the shape of a trumpet. The ball head 52 is located inside the spherical mounting groove 51 and is rotatably connected.

[0050] This scheme achieves horizontal angle adjustment of the detector housing 41 by rotating the detector housing 41 around the ball head 52.

[0051] The upper surface of the detector housing 41 has an illumination window 42, which is square and approximately 20cm × 20cm in size. The illumination window 42 is basically consistent with the illumination field of the accelerator's illumination lamp, which is also approximately 20cm × 20cm.

[0052] Preferably, a first friction plate 53 is attached to the surface of the ball head 52, and a second friction plate 54 is attached to the inner surface of the spherical mounting groove 51. The first friction plate 53 and the second friction plate 54 can be rough plastic or metal sheets to increase the friction between the inner surface of the ball bearing 5 seat and the surface of the ball head 52. The user holds the semiconductor detector 4 and uses force to overcome the above friction, and then swings the semiconductor detector 4. After swinging to the correct position, the user releases his hand, and the semiconductor detector 4 stops at the corresponding position.

[0053] like Figure 8-9 , Figure 12 and Figure 14 As shown, this solution also includes a channel top block 44 to restrict the movement of the ball bearing 5. The end of the channel top block 44 is provided with a connecting piece 443. The channel top block 44 includes a circular top block 441 adapted to the circular channel 431 and a trapezoidal top block 442 adapted to the trapezoidal channel 432.

[0054] A positioning groove 433 is provided at the opening of the housing channel 43, and a connecting piece 443 is correspondingly provided at the end of the channel top block 44. Screw holes are provided on the bottom of the positioning groove 433 and on the connecting piece 443. During assembly, the connecting piece 443 is installed in the positioning groove 433, and then the connecting piece 443 is connected to the detector housing 41 by screws, so that the channel top block 44 can be installed into the housing channel 43.

[0055] Preferably, such as Figure 12 and Figure 14 As shown, a positioning groove 433 is provided on each of the opposite sides of the channel opening of the trapezoidal channel 432, and a positioning groove 433 is provided on each of the opposite sides of the channel opening of the circular channel 431.

[0056] Correspondingly, a connecting piece 443 is provided on each opposite side of the end of the trapezoidal top block 442, and a connecting piece 443 is provided on each opposite side of the end of the cylindrical top block. Each connecting piece 443 is installed in a positioning groove 433 and connected to the detector housing 41 by screws.

[0057] 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 detector device, characterized in that: The device includes a base, a telescopic mechanism, and a semiconductor detector. The telescopic mechanism includes a telescopic column, which is mounted on the base and extends beyond the upper surface of the base. The semiconductor detector includes a detector housing, the lower surface of which is hinged to the telescopic end of the telescopic column, and the upper surface of which has an illumination window. The telescopic mechanism further includes a rotating sleeve, a driving body, and an anti-rotation post. The outer circumferential surface of the telescopic post is provided with an external thread, the inner circumferential surface of the rotating sleeve is provided with an internal thread, the telescopic post is located inside the rotating sleeve, a limit hole is formed on the lower surface of the telescopic post, the anti-rotation post extends into the limit hole, and the driving body is used to drive the rotating sleeve to rotate. The driving body includes a gear set and a drive motor. A first toothed ring is provided on the outer circumferential surface of the rotating sleeve. The drive motor and the first toothed ring are transmitted through the gear set. Alternatively, the driving body includes a worm and a drive motor. A first worm wheel is provided on the outer circumferential surface of the rotating sleeve. The worm is arranged laterally and meshes with the first worm wheel. The drive motor is used to drive the worm to rotate.

2. The detector device according to claim 1, characterized in that: A ball head is formed on the telescopic column, and a spherical mounting groove is formed on the lower surface of the detector housing. The ball head is located in the spherical mounting groove and is rotatably connected.

3. The detector device according to claim 2, characterized in that: A first friction pad is attached to the surface of the ball head, and a second friction pad is attached to the inner surface of the spherical mounting groove.

4. The detector device according to claim 2, characterized in that: The vertical cross-sectional projection shape of the lower opening of the spherical mounting groove is a flared, trumpet-shaped opening.

5. A detector device according to claim 2, characterized in that: The spherical mounting groove extends through the side wall of the detector housing on one side.

6. A detector device according to claim 1, characterized in that: The anti-rotation column has a square horizontal cross-section.

7. The detector device according to claim 1, characterized in that: The base includes an upper cover plate and a lower seat body, the lower seat body forming an installation chamber, and the rotating sleeve, driving body and anti-rotation column located in the installation chamber.

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