Blood irradiation dose testing device

Abstract

The application discloses a blood irradiation dose testing device, and belongs to the technical field of blood irradiation. The device comprises a bottom plate (8), and a measuring mold (6) is arranged on the surface of the bottom plate (8) and rotates, wherein the measuring mold (6) is a columnar solid structure, a measuring sensor for measuring an irradiation dose is arranged on the surface of the measuring mold (6), a measuring hole (2) is formed in the measuring mold (6), and a measuring probe (5) of the measuring sensor is arranged in the measuring hole (2). The blood irradiation dose testing device is used for replacing blood with the solid structure measuring mold, thereby realizing detection of the irradiation dose of a blood irradiation instrument, and determining whether the radiation dose of the irradiation instrument meets the irradiation requirement of blood. The measuring hole comprises multiple groups of measuring holes located at different circumferences, and each group comprises multiple measuring holes located at the same circumference. The measuring probe is arranged in different groups of measuring holes, so that the detection of the radiation dose at different distances can be realized.

Description

Technical Field

[0001] A blood irradiation dose testing device, belonging to the field of blood irradiation technology. Background Technology

[0002] Blood irradiation refers to treating blood with a specific dose of radiation to prevent transfusion-associated graft-versus-host disease (TA-GVHD). Accurate measurement of the irradiation dose is crucial during blood irradiation. An appropriate dose can effectively kill harmful pathogens in the blood; insufficient dose will not achieve the desired effect, while excessive dose may damage the effective components in the blood, affecting blood quality and treatment efficacy.

[0003] Currently, commonly used methods for measuring blood irradiation dose include the following: (1) Measurement using thermoluminescent tablets. When using thermoluminescent tablets, the thermoluminescent tablet and the blood sample need to be irradiated together. After irradiation, the thermoluminescent tablet is heated by a special instrument to release the stored energy and measure the luminescence intensity to calculate the irradiation dose. This process is cumbersome, has a long measurement cycle, and cannot obtain dose data in real time. Moreover, the sensitivity and accuracy of thermoluminescent tablets are easily affected by environmental factors, resulting in large measurement errors. (2) Film measurement method. The film measurement method uses the color change of the film after irradiation to determine the irradiation dose. However, the color change of the film is affected by various factors, such as batch differences of the film and storage conditions, making it difficult to guarantee the accuracy of the measurement results. Similarly, it is impossible to display the dose size in real time.

[0004] A Chinese invention patent, application number 202010469246.9, filed on May 28, 2020, entitled "A Radiation Dose Detection Device and Detection Method for a Blood Irradiator," describes a technical solution that uses liquid injected into a blood cup instead of blood for detection, and incorporates an anti-tangling mechanism to prevent the probe's wires from becoming tangled. However, this solution is relatively complex. Therefore, designing a simple technical solution capable of measuring the radiation dose of a blood irradiator to meet the requirements of blood irradiation has become a pressing issue in this field. 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 a blood irradiation dose testing device that uses a solid structure measuring phantom to replace blood, thereby realizing the detection of irradiation dose of blood irradiation instrument in order to meet the requirements of blood irradiation.

[0006] The technical solution adopted by this utility model to solve its technical problem is: the blood irradiation dose testing device is characterized in that: it includes a base plate, and a measuring mold is rotatably arranged on the surface of the base plate. The measuring mold is a columnar solid structure, and a measuring sensor for measuring irradiation dose is arranged on the surface of the measuring mold. A measuring hole is opened in the measuring mold, and the measuring probe of the measuring sensor is placed in the measuring hole.

[0007] Preferably, a support frame is mounted on the surface of the base plate, the measuring model is located below the support frame, an electric slip ring is provided on the upper surface of the support frame, and the signal output terminal of the measuring sensor is connected to the signal connector of the electric slip ring.

[0008] Preferably, a connecting rod is provided on the surface of the measuring mold, with one end of the connecting rod fixed to the surface of the measuring mold and the other end connected to the rotating shaft of the electric slip ring.

[0009] Preferably, a drive motor is provided at the bottom of the base plate, the drive shaft of the drive motor extends vertically to the upper part of the base plate, and a turntable is coaxially fixed at the upper part of the drive shaft, and the measuring mold is coaxially fixed on the surface of the turntable.

[0010] Preferably, a measuring box is fixed to the surface of the measuring phantom by a fixing frame, the measuring sensor is arranged inside the measuring box, and the measuring probe is led out from one side of the measuring box.

[0011] Preferably, multiple sets of measuring holes are arranged on the surface of the measuring mold, and each set of measuring holes includes multiple sets arranged along the circumference, with the multiple sets of measuring holes located on different circumferences.

[0012] Preferably, the measuring hole is opened along the axial direction of the measuring mold.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The blood irradiation dose testing device of this application uses a solid measuring phantom to replace blood, thereby enabling the detection of the irradiation dose of a blood irradiator to determine whether the radiation dose of the irradiator meets the irradiation requirements of the blood.

[0014] In the blood irradiation dose testing device of this application, the signal line of the measuring sensor is led out through an electric slip ring, which avoids the measuring sensor wire harness from getting tangled during rotation.

[0015] The signal line of the measuring sensor is connected to the slip ring along the connecting rod to avoid damage to the wiring harness due to rotation and pulling when the signal line is directly connected to the slip ring.

[0016] The measuring aperture consists of multiple sets located on different circumferences, and each set includes multiple apertures located on the same circumference. By placing the measuring probe into different sets of measuring apertures, the radiation dose at different distances can be detected. Attached Figure Description

[0017] Figure 1 This is an isometric view of a blood irradiation dose testing device.

[0018] Figure 2 This is a front view of a blood irradiation dose testing device.

[0019] Figure 3 for Figure 2 Sectional view along the AA direction.

[0020] The components include: 1. Electric slip ring; 2. Measuring hole; 3. Measuring box; 4. Fixing frame; 5. Measuring probe; 6. Measuring mold; 7. Support frame; 8. Base plate; 9. Support foot; 10. Drive motor; 11. Turntable; 12. Connecting rod. Detailed Implementation

[0021] Figures 1-3 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-3 The present invention will be further described below.

[0022] like Figures 1-2 As shown, a blood irradiation dose testing device includes a horizontally arranged base plate 8, with support feet 9 at the four corners of the bottom of the base plate 8, a drive motor 10 at the bottom of the base plate 8, and a drive shaft of the drive motor 10 extending from bottom to top through the base plate 8 and onto the surface of the base plate 8. A turntable 11 is arranged above the base plate 8, and the turntable 11 is coaxially fixed with the drive shaft of the drive motor 10. Therefore, when the drive motor 10 rotates, it can drive the turntable 11 to rotate synchronously.

[0023] A measuring mold 6 is fixed on the surface of the turntable 11. The measuring mold 6 is a solid cylindrical structure, and the measuring mold 6 uses a material with a density of 0.2~1.2 cm³. 3 The material used is preferably 1 g / cm³. 3 The material can simulate the density of blood to the greatest extent, making the measurement results more accurate.

[0024] Combination Figure 3 The measuring mold 6 has multiple sets of measuring holes 2, each set comprising multiple holes, all located on the same circumference. These multiple sets of measuring holes 2 are arranged on different circumferences. All measuring holes 2 are formed along the axial direction of the measuring mold 6.

[0025] Assume a support frame 7 is mounted on the surface of the base plate 8. The two sides of the support frame 7 are fixed to the two opposite edges of the base plate 8, and the support frame 7 covers the entire measuring mold 6 below it. An electric slip ring 1 is mounted on the upper surface of the support frame 7, and the rotation axis of the electric slip ring 1 is collinear with the rotation axis of the measuring mold 6.

[0026] A connecting rod 12 is installed on the surface of the measuring mold 6. The upper end of the connecting rod 12 passes through the support frame 7 and is connected to the rotating shaft of the electric slip ring 1. The lower part of the connecting rod 12 is connected to the surface of the measuring mold 6. When the measuring mold 6 rotates, the rotating shaft of the electric slip ring 1 is driven to rotate synchronously through the connecting rod 12.

[0027] A measuring box 3 is mounted on the upper surface of the measuring phantom 6. The measuring box 3 is fixed to the surface of the measuring phantom 6 by a fixing bracket 4. A measuring sensor is installed inside the measuring box 3. The measuring sensor is implemented using a finger-shaped ionization chamber, which is well known in the art. The measuring probe 5 of the measuring sensor extends from the side of the measuring box 3. The signal output line of the measuring sensor extends along the connecting rod 12 to the slip ring 1 and is connected to the signal input terminal of the slip ring 1. The signal output terminal of the slip ring 1 is connected to an external controller (not shown in the figure), which processes the data collected by the measuring sensor.

[0028] The specific working process and working principle are as follows: The measuring probe 5, which is led out from the side of the measuring box 3, is placed into one of the measuring holes 2. Then, when the drive motor 10 rotates, it drives the turntable 11 to rotate through its drive shaft. When the turntable 11 rotates, it drives the measuring mold 6 to rotate.

[0029] When the measuring phantom 6 rotates, a blood irradiator (not shown in the figure) to be tested is arranged on the side of this blood irradiation dose testing device. The blood irradiator emits radiation into the measuring phantom 6 during operation. During the rotation of the measuring phantom 6, the radiation dose of the blood irradiator is detected by the measuring probe 5 arranged in the measuring hole 2. The radiation dose data collected by the measuring probe 5 is transmitted to an external controller via an electric slip ring 1. The controller analyzes and judges the radiation dose of the blood pressure irradiator. By placing the measuring probe 5 in different sets of measuring holes 2, radiation dose can be detected at different distances.

[0030] 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. A blood irradiation dose testing device, comprising a base plate (8), wherein a measuring phantom (6) is rotatably disposed on the surface of the base plate (8), characterized in that: The measuring phantom (6) is a solid columnar structure. A measuring sensor for measuring radiation dose is arranged on the surface of the measuring phantom (6). A measuring hole (2) is opened inside the measuring phantom (6), and the measuring probe (5) of the measuring sensor is placed inside the measuring hole (2).

2. The blood irradiation dose testing device according to claim 1, characterized in that: A support frame (7) is mounted on the surface of the base plate (8). The measuring module (6) is located below the support frame (7). An electric slip ring (1) is provided on the upper surface of the support frame (7). The signal output end of the measuring sensor is connected to the signal connector of the electric slip ring (1).

3. The blood irradiation dose testing device according to claim 2, characterized in that: A connecting rod (12) is provided on the surface of the measuring mold (6). One end of the connecting rod (12) is fixed to the surface of the measuring mold (6), and the other end is connected to the rotating shaft of the electric slip ring (1).

4. The blood irradiation dose testing device according to claim 1, characterized in that: A drive motor (10) is provided at the bottom of the base plate (8). The drive shaft of the drive motor (10) extends vertically to the upper part of the base plate (8). A turntable (11) is coaxially fixed on the upper part of the drive shaft. The measuring mold (6) is coaxially fixed on the surface of the turntable (11).

5. The blood irradiation dose testing device according to claim 1, characterized in that: A measuring box (3) is fixed to the surface of the measuring mold (6) by a fixing frame (4), the measuring sensor is arranged inside the measuring box (3), and the measuring probe (5) is led out from one side of the measuring box (3).

6. The blood irradiation dose testing device according to claim 1, characterized in that: Multiple sets of measuring holes (2) are arranged on the surface of the measuring mold (6). Each set of measuring holes (2) includes multiple sets arranged along the circumference, and the multiple sets of measuring holes (2) are located on different circumferences.

7. The blood irradiation dose testing device according to claim 1 or 6, characterized in that: The measuring hole (2) is opened along the axial direction of the measuring mold (6).

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