A leveling piece switching mechanism

Abstract

The utility model discloses a kind of even sheet switching mechanisms, including collimator (A1);Driving device (A2), it is installed on collimator (A1);Even sheet support assembly (A3), it is installed on collimator (A1);Even sheet assembly (A4), it is installed on even sheet support assembly (A3);Even sheet assembly (A4) includes even sheet support (6), N even sheet (7), M hole steel wire baffle ring (C4);Even sheet (7) is installed on the hole steel wire baffle ring (C4) of even sheet support (6), even sheet support (6) is equipped with external gear, and driving device (A2) drives external gear rotation;Detection component (A5), it is installed on collimator (A1), for detecting whether even sheet assembly (A4) is rotated to predetermined position;Ionization chamber component (A6), it is installed on collimator (A1), for monitoring the radiation intensity of even sheet switching mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to a uniform plate switching mechanism. Background Technology

[0002] In tumor radiotherapy, X-rays require beam flattening via a flattening filter to ensure uniform radiation dose distribution within the treatment area. Traditional flattening systems typically employ fixed flattening filters or limited switchable modes, leading to the following problems: a single flattening filter is insufficient to adapt to treatment needs with varying energies and field sizes, affecting dose distribution optimization; mechanical translation switching structures are space-consuming and have slow response times; and the lack of a real-time feedback mechanism means flattening filter position calibration relies on manual intervention. With technological advancements, some X-ray beams no longer require beam flattening via a flattening filter, necessitating a switching mechanism that can simultaneously satisfy both flattening and non-flattening modes. Utility Model Content

[0003] The technical problem this invention aims to solve is to address the shortcomings of the prior art by providing a homogenizing plate switching mechanism. This mechanism uses a drive component to rotate the homogenizing plate assembly around an axis, enabling rapid and precise switching of the homogenizing plate. This design not only solves the spatial limitations of traditional homogenizing modes but also uses a detection component to monitor whether the rotation has reached a predetermined position, ensuring dynamic adaptability of beam homogenization during treatment. This improves the flexibility of radiotherapy and simultaneously supports both homogenized and non-homogenized modes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a uniform plate switching mechanism, characterized in that it includes: a collimator;

[0005] A drive unit is mounted on the collimator;

[0006] A uniform support assembly is mounted on the collimator;

[0007] A uniform sheet assembly is mounted on the uniform sheet support assembly;

[0008] The leveling plate assembly includes a leveling plate bracket, N leveling plates, and M wire retaining rings for holes, where N is a positive integer greater than 1 and N is less than or equal to M;

[0009] The leveling plate is mounted on the wire retaining ring of the hole in the leveling plate bracket. The leveling plate bracket is provided with an external gear, and the driving device drives the external gear to rotate.

[0010] A detection component, mounted on the collimator, is used to detect whether the leveling plate component has rotated to a predetermined position;

[0011] An ionization chamber assembly, mounted on the collimator, is used to monitor the radiation intensity of the homogenizing plate switching mechanism.

[0012] The above-mentioned uniform wafer switching mechanism is characterized in that: the driving device includes:

[0013] The motor bracket is fixed to the collimator;

[0014] A stepper motor is mounted on the motor bracket;

[0015] A small gear is mounted on the output shaft of the stepper motor and meshes with the external gear of the leveling plate bracket.

[0016] The above-mentioned uniform sheet switching mechanism is characterized in that: the uniform sheet support assembly includes:

[0017] A uniform support shaft is fixed to the collimator;

[0018] A uniform support bushing is sleeved on the uniform support shaft;

[0019] A deep groove ball bearing is installed between the uniform plate support shaft and the uniform plate bracket bushing.

[0020] The above-mentioned uniform wafer switching mechanism is characterized in that: the detection component includes:

[0021] A detection switch bracket is fixed to the collimator;

[0022] A photoelectric switch is mounted on the detection switch bracket to detect whether the leveling plate bracket has rotated to a predetermined position.

[0023] The above-mentioned uniform plate switching mechanism is characterized in that: the ionization chamber assembly includes:

[0024] An ionization chamber support is fixed to the collimator;

[0025] An ionization chamber, mounted on a support frame, is used to monitor radiation intensity.

[0026] This utility model has the following advantages compared with the prior art:

[0027] 1. By driving the leveling plate component to rotate around the axis, the leveling plate can be switched quickly and accurately, while satisfying both leveling and non-leveling modes.

[0028] 2. By monitoring whether the device has rotated to the predetermined position, the dynamic adaptation of the beam uniformity during treatment is ensured, thereby improving the flexibility of radiotherapy.

[0029] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] Figure 1 This is a three-dimensional view of the present invention;

[0031] Figure 2 This is the front view of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the uniform wafer assembly of this utility model;

[0033] Figure 4 This is a top view of the present invention;

[0034] Figure 5 This is a bottom view of the present invention;

[0035] Figure 6 This is a schematic diagram of the drive device of this utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the uniform sheet support assembly of this utility model;

[0037] Figure 8 This is a schematic diagram of the detection component of this utility model;

[0038] Figure 9 This is a schematic diagram of the ionization chamber assembly of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] A1-Collider; A2-Drive unit; A3-Equalizing plate support assembly; A4-Equalizing plate assembly; A5-Detection assembly; A6-Ionization chamber assembly; 1-Motor bracket; 2-Pin gear; 3-Equalizing plate support shaft; 4-Equalizing plate bracket bushing; 5-Equalizing plate bracket shaft end cap; 6-Equalizing plate bracket; 7-Equalizing plate; 8-Equalizing detection switch bracket; 9-Ionization chamber bracket; C1-Stepper motor; C3-Deep groove ball bearing; C4-Bore retaining ring; C5-Photoelectric switch; C6-Ionization chamber. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] like Figure 1 As shown, this utility model proposes a uniform plate switching mechanism, such as... Figure 1-3 As shown, it includes: a collimator (A1); a drive device (A2) mounted on the collimator (A1); a leveling plate support assembly (A3) mounted on the collimator (A1); a leveling plate assembly (A4) mounted on the leveling plate support assembly (A3), the leveling plate assembly (A4) including a leveling plate bracket (6), two leveling plates (7), and three wire retaining rings (C4) for fixing the leveling plates (7), the leveling plate bracket (6) is provided with an external gear, and the drive device (A2) drives the external gear to rotate; a detection assembly (A5) mounted on the collimator (A1) for detecting whether the leveling plate assembly (A4) has rotated to a predetermined position; and an ionization chamber assembly (A6) mounted on the collimator (A1) for monitoring the radiation intensity of the leveling plate switching mechanism.

[0043] Figure 4 A top view of a uniform plate switching mechanism is provided for this utility model. Figure 5 A bottom view of a uniform plate switching mechanism is provided for this utility model.

[0044] For example, such as Figure 1 As shown, two of the holes have a leveling plate (7) in the wire retaining ring (C4), while one hole does not have a leveling plate (7).

[0045] When this utility model is in use, if equalization is not required, the drive device (A2) drives the external gear of the equalization plate bracket (6) to rotate counterclockwise by 120 degrees, so that the wire retaining ring (C4) without the equalization plate (7) is rotated to the top of the ionization chamber assembly (A6). At this time, the equalization plate switching mechanism is in the mode without equalization plate.

[0046] Similarly, if equalization is required, the drive unit (A2) drives the external gear to rotate 120 degrees clockwise, so that the wire retaining ring (C4) with the equalization plate (7) installed rotates to directly above the ionization chamber assembly (A6), at which time the equalization plate switching mechanism is in equalization mode.

[0047] When the leveling plate switching mechanism switches modes, the detection component (A5) installed on the collimator (A1) detects whether the leveling plate bracket (6) has rotated to the predetermined position to ensure successful rotation.

[0048] For example, in the mode without balancing, after the balancing bracket (6) is rotated 120 degrees counterclockwise, the detection component (A5) is turned on, that is, the balancing bracket (6) has been successfully rotated; or in the balancing mode, after the balancing bracket (6) is rotated 120 degrees clockwise, the detection component (A5) is turned on, that is, the balancing bracket (6) has been successfully rotated.

[0049] In addition, the ionization chamber assembly (A6) installed on the collimator (A1) for monitoring radiation intensity further ensures that the current homogenization plate switching mechanism is in the target mode.

[0050] In summary, the homogenization film switching mechanism provided in this application allows users to choose whether homogenization is required based on the application scenario. This enables rapid and precise switching of homogenized films, improves the flexibility of homogenized radiation, and results in better treatment outcomes.

[0051] like Figure 6 The diagram shows a cross-sectional view of the drive device (A2), which includes: a motor bracket (1) fixed on the collimator (A1); a stepper motor (C1) mounted on the motor bracket (1); and a pinion (2) mounted on the output shaft of the stepper motor (C1) and meshing with the external gear of the leveling plate bracket (6).

[0052] Figure 7 The present invention proposes a sizing plate support assembly (A3) of a sizing plate switching mechanism, comprising: a sizing plate support shaft (3) fixed on a collimator (A1); a sizing plate bracket bushing (4) sleeved on the sizing plate support shaft (3); a sizing plate bracket shaft end cap (5) installed on the sizing plate support shaft (3); and a deep groove ball bearing (C3) installed between the sizing plate support shaft (3) and the sizing plate bracket bushing (4).

[0053] Figure 8 The present invention proposes a detection component (A5) for a balancing plate switching mechanism, comprising: a detection switch bracket (8) fixed on a collimator (A1); and a photoelectric switch (C5) mounted on the detection switch bracket (8) for detecting whether the balancing plate bracket (6) has rotated to a predetermined position.

[0054] When this utility model is used, in the mode without equalization plate, after the equalization plate bracket (6) is rotated 120 degrees counterclockwise, the photoelectric switch (C5) of the detection component (A5) is turned on, that is, the equalization plate bracket (6) has been successfully rotated; or in the equalization mode, after the equalization plate bracket (6) is rotated 120 degrees clockwise, the photoelectric switch (C5) of the detection component (A5) is turned on, that is, the equalization plate bracket (6) has been successfully rotated.

[0055] Figure 9 The present invention proposes an ionization chamber assembly (A6) with a uniform plate switching mechanism, comprising: an ionization chamber support (9) fixed on a collimator (A1); and an ionization chamber (C6) installed on the ionization chamber support (9) for monitoring radiation intensity.

[0056] In use, the ionization chamber assembly (A6) installed on the collimator (A1) determines the radiation intensity of the rays passing through the ionization chamber by detecting the potential difference between the upper and lower plates of the ionization chamber, thereby ensuring that the current mode of the homogenizing plate switching mechanism is the target mode. After passing through the homogenizing switching device, the X-rays enter the ionization chamber. The gas in the ionization chamber is ionized under the action of the rays. The ionized electrons and ions move towards the positive and negative poles respectively. The amount of charge ionized at the poles is used to measure the radiation energy entering the ionization chamber, thereby determining whether the rays have passed through the homogenizing plate.

[0057] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A uniform plate switching mechanism, characterized in that, include: Collimator (A1); A drive unit (A2) is mounted on the collimator (A1); A uniform support assembly (A3) is mounted on the collimator (A1); The leveling sheet assembly (A4) is mounted on the leveling sheet support assembly (A3); The leveling plate assembly (A4) includes a leveling plate bracket (6), N leveling plates (7), and M wire retaining rings (C4) for holes, wherein N is a positive integer greater than or equal to 1, and N is less than or equal to M; The leveling plate (7) is mounted on the wire retaining ring (C4) of the hole of the leveling plate bracket (6), the leveling plate bracket (6) is provided with an external gear, and the driving device (A2) drives the external gear to rotate; A detection component (A5), mounted on the collimator (A1), is used to detect whether the leveling plate component (A4) has rotated to a predetermined position; An ionization chamber assembly (A6), mounted on the collimator (A1), is used to monitor radiation intensity.

2. The uniform plate switching mechanism according to claim 1, characterized in that: The drive device (A2) includes: The motor bracket (1) is fixed on the collimator (A1); A stepper motor (C1) is mounted on the motor bracket (1); The pinion (2) is mounted on the output shaft of the stepper motor (C1) and meshes with the external gear of the leveling plate bracket (6).

3. The uniform plate switching mechanism according to claim 1, characterized in that: The uniform support assembly (A3) includes: The uniform support shaft (3) is fixed on the collimator (A1); The uniform plate support bushing (4) is sleeved on the uniform plate support shaft (3); A deep groove ball bearing (C3) is installed between the uniform plate support shaft (3) and the uniform plate bracket bushing (4).

4. A uniform plate switching mechanism according to claim 1, characterized in that: The detection component (A5) includes: The detection switch bracket (8) is fixed on the collimator (A1); A photoelectric switch (C5) is mounted on the detection switch bracket (8) to detect whether the leveling plate bracket (6) has rotated to a predetermined position.

5. A uniform plate switching mechanism according to claim 1, characterized in that: The ionization chamber assembly (A6) includes: An ionization chamber support (9) is fixed to the collimator (A1); An ionization chamber (C6), mounted on the ionization chamber support (9), is used to monitor radiation intensity.

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