Calibration device suitable for radionuclide activity and position
By designing a calibration device including a support bracket, an X-direction moving device, a Y-direction moving device and a displacement control device, the problems of radio source positioning error and operator radiation exposure in the prior art are solved, and higher accuracy and safety are achieved.
Patent Information
- Application Number
- CN202411740394.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-28
AI Technical Summary
When positioning the radio source position, the prior art can easily lead to errors, and the operator is irradiated by the radio source for a long time, which poses a risk of injury.
A calibration device is designed, including a support bracket, an X-direction moving device, a Y-direction moving device and a displacement control device. The precise positioning and movement of the radiation source is achieved through horizontal linear slide rails and vertical linear slide rails, and the operator can control the device to conduct testing in a safe position.
The errors caused by manual positioning are reduced, the calibration measurement accuracy is improved, and the time for operators to be exposed to radiation sources is reduced, and the damage to the human body is reduced.
Smart Images
Figure CN119535534A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of radioactive detection, and in particular to a calibration device suitable for the activity and position of radioactive nuclides. Background Art
[0002] With the development of medicine, the demand for medical radioisotopes in the field of radiation diagnosis and treatment has increased year by year. The more commonly used method is to use a dose rate meter at a certain distance from the patient to measure the activity and position of residual radionuclides in the patient's body after the patient has taken the prescribed dose of the medicine given by the doctor. This dose rate meter includes a lifting module and a measuring module. The horizontal linear array on the measuring module is provided with multiple measuring units. The lifting module drives the measuring module to move up and down, thereby completing the upper and lower scanning of the human body and detecting the activity and position of residual radionuclides in the human body. The dose rate meter needs to be maintained regularly, that is, the dose rate meter is calibrated and tested at different positions using a radiation source. If the position of the radiation source is manually located, the operator will be exposed to the radiation source for a long time, which will cause harm to the body. Summary of the invention
[0003] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is: how to provide a calibration device that can reduce the positioning error of the radiation source and reduce the harm to the operator caused by the radiation source.
[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A calibration device suitable for the activity and position of radioactive nuclides comprises a supporting bracket, an X-direction moving device, a Y-direction moving device and a displacement control device, wherein the X-direction moving device comprises a horizontal linear slide rail fixedly connected to the top of the supporting bracket and extending horizontally, a horizontal slide seat capable of moving along its extension direction and a horizontal driving device for driving the horizontal slide seat to move are slidably connected to the horizontal linear slide rail, a vertical slide seat capable of moving along its extension direction and a vertical driving device for driving the vertical slide seat to move are slidably connected to the vertical linear slide rail, a radiation source is detachably connected to the vertical slide seat, and the displacement control device is electrically connected to the horizontal driving device and the vertical driving device respectively, and can control the horizontal driving device and the vertical driving device respectively to realize the position positioning of the horizontal slide seat and the vertical slide seat.
[0005] In the present invention, the operator places the calibration device in front of the dose rate meter and installs the radiation source on the vertical slide. Then the operator can use the displacement control device to control the horizontal drive device and the vertical drive device in a safe position away from the radiation source, and operate the horizontal slide and the vertical slide to move to different positions in the horizontal direction and the vertical direction to realize the positioning of the radiation source at different points in the plane. After all points are tested, the operator can remove the radiation source. This not only realizes the accurate positioning of the radiation source, but also reduces the exposure time of the operator to the radiation source, thereby reducing the harm to the human body.
[0006] As an optimization, the support bracket includes a horizontally arranged and overall U-shaped frame, and vertically arranged legs are fixedly connected to the bottom of the frame and the four corners of the corresponding frame. The U-shaped frame supports the X-axis moving device and the Y-axis moving device more stably, avoiding affecting the positioning accuracy.
[0007] As an optimization, universal wheels are installed at the bottom of the legs to facilitate movement.
[0008] As an optimization, the frame includes two lower support bars that are horizontally parallel and spaced and arranged oppositely, and upper fixing bars are arranged above the two lower support bars in a horizontally parallel and spaced direction parallel to the extension direction of the lower support bars, and the extension direction of the upper fixing bars is perpendicular to the extension direction of the lower support bars, and the bottoms at both ends of the upper fixing bars are respectively placed on the tops of the two lower support bars, and the tops of the lower support bars and the positions corresponding to the two sides of the upper fixing bars are respectively provided with limit blocks, the limit blocks abut against the side surfaces of the upper fixing bars on the sides where they are located, and the limit blocks are fixedly connected to the lower support bars and the upper fixing bars respectively. This can improve the fixed positioning of the upper fixing bars and reduce the risk of loosening.
[0009] Compared with the prior art, the present invention reduces the error caused by manual positioning, improves the calibration measurement accuracy, and reduces the time that operators are exposed to the radiation source. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a side view of the present invention. DETAILED DESCRIPTION
[0011] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.
[0012] like Figure 1 As shown, the calibration device suitable for the activity and position of radioactive nuclides in this specific embodiment includes a supporting bracket, an X-axis moving device, a Y-axis moving device and a displacement control device. The X-axis moving device includes a horizontal linear slide 1 fixedly connected to the top of the supporting bracket and horizontally extending, and the horizontal linear slide 1 is slidably connected with a horizontal slide 2 capable of moving along its extension direction and a horizontal driving device 3 for driving the horizontal slide 2 to move. The Y-axis moving device includes a vertical linear slide 4 fixedly connected to the top of the horizontal slide 2 and vertically extending, and the vertical linear slide 4 is slidably connected with a vertical slide 5 capable of moving along its extension direction and a vertical driving device 6 for driving the vertical slide 5 to move. A radiation source is detachably connected to the vertical slide 5, and the displacement control device is electrically connected to the horizontal driving device 3 and the vertical driving device 6, respectively, and can control the horizontal driving device 3 and the vertical driving device 6 respectively to realize the position positioning of the horizontal slide 2 and the vertical slide 5.
[0013] In this specific embodiment, the support bracket includes a horizontally arranged frame that is in the shape of a square. Vertically arranged legs 7 are fixedly connected to the bottom of the frame and to the four corners of the frame.
[0014] In this specific implementation, a universal wheel 8 is installed at the bottom of the supporting leg 7 .
[0015] In this specific embodiment, the frame includes two lower support bars 9 that are horizontally parallel, spaced apart and relatively arranged, and upper fixing bars 10 are horizontally parallel, spaced apart and relatively arranged above the two lower support bars 9 in a direction parallel to the extension direction of the lower support bars 9. The extension direction of the upper fixing bar 10 is perpendicular to the extension direction of the lower support bar 9, and the bottoms at both ends of the upper fixing bar 10 are respectively placed on the tops of the two lower support bars 9. Limiting blocks 11 are respectively provided on the tops of the lower support bars 9 and at positions corresponding to both sides of the upper fixing bars 10. The limiting blocks 11 abut against the side surfaces of the upper fixing bars 10 on their sides, and the limiting blocks 11 are fixedly connected to the lower support bars 9 and the upper fixing bars 10, respectively.
[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.
Claims
1. A device for calibrating the activity and position of radionuclides, characterized in that: The invention comprises a supporting bracket, an X-axis moving device, a Y-axis moving device and a displacement control device. The X-axis moving device comprises a horizontal linear slide rail fixedly connected to the top of the supporting bracket and extending horizontally. A horizontal slide seat capable of moving along its extending direction and a horizontal driving device for driving the horizontal slide seat to move are slidably connected to the horizontal linear slide rail. The Y-axis moving device comprises a vertical linear slide rail fixedly connected to the top of the horizontal slide seat and extending vertically. A vertical slide seat capable of moving along its extending direction and a vertical driving device for driving the vertical slide seat to move are slidably connected to the vertical linear slide rail. A radiation source is detachably connected to the vertical slide seat. The displacement control device is electrically connected to the horizontal driving device and the vertical driving device respectively, and can control the horizontal driving device and the vertical driving device respectively to realize the positioning of the horizontal slide seat and the vertical slide seat.
2. The device for calibrating the activity and position of radionuclides according to claim 1, characterized in that: The support bracket comprises a horizontally arranged frame which is in a square shape as a whole, and vertically arranged supporting legs are respectively fixedly connected to the bottom of the frame and to the four corners corresponding to the frame.
3. The device for calibrating the activity and position of radionuclides according to claim 2, characterized in that: Universal wheels are installed at the bottom of the supporting legs.
4. The device for calibrating the activity and position of radionuclides according to claim 2, characterized in that: The frame includes two lower support bars that are horizontally parallel and spaced apart and arranged opposite to each other, and upper fixing bars are arranged horizontally, parallel and spaced apart and opposite to each other along the extension direction of the lower support bars above the two lower support bars, and the extension direction of the upper fixing bars is perpendicular to the extension direction of the lower support bars, and the bottoms located at both ends of the upper fixing bars are respectively placed on the tops of the two lower support bars, and limiting blocks are respectively provided on the tops of the lower support bars and at positions corresponding to the two sides of the upper fixing bars, the limiting blocks abut against the side surfaces of the upper fixing bars on the sides where they are located, and the limiting blocks are respectively fixedly connected to the lower support bars and the upper fixing bars.