Automatic shielding device for X-ray machine light outlet of desktop CT system

Abstract

The utility model discloses a desktop CT system X -ray machine light outlet automatic shielding device relates to medical equipment technical field, aims at solving the problem of existing shielding mode relies on manual, has no automation linkage, poor applicability. The device includes support subassembly, drive subassembly, shielding subassembly, position detection subassembly and external control system, and support subassembly provides fixed base, and drive subassembly rotates with micro -electric push rod drive, and shielding subassembly realizes shielding / removes through replaceable shielding sheet, and position detection subassembly accurately positions open -close state, and external control system linkage CT system realizes automatic control. The device can automatically switch X -ray machine light outlet shielding state, adapts to living body experiment, equipment preheating etc. scene, and compact structure, safe and efficient operation, satisfy desktop CT system multi -scene radiation protection and compact installation demand.

Description

Technical Field

[0001] This utility model belongs to the field of medical equipment technology, specifically relating to an automatic light-blocking device for the light output port of a desktop CT system X-ray machine. Background Technology

[0002] Desktop CT systems are widely used in scientific research and medical experiments. The X-ray machine's output port needs to be protected according to the experimental scenario. For example, when conducting live experiments, the output port needs to be blocked to reduce the impact of radiation on the live animals. During the equipment warm-up phase, the X-ray machine tube pressure is high, while it decreases during normal scanning. During warm-up, the output port also needs to be blocked to reduce radiation intensity and reduce the overall lead equivalent consumption of the equipment. These scenarios all place clear demands on the blocking operation of the X-ray machine's output port.

[0003] In existing technologies, the obstruction of the X-ray output port of desktop CT system X-ray machines mostly relies on manual operation, that is, the experimenter manually adds or removes the obstruction component. This method is not only inefficient, but may also affect the experimental progress due to delays in operation timing, and there is a risk of radiation exposure when the operator touches the equipment. Especially in experiments where the obstruction state is switched frequently, the safety and convenience of operation cannot be guaranteed.

[0004] While there are simple shielding structures in some scenarios, they lack automated control capabilities and cannot be linked with experimental parameters such as the scanning process and tube pressure changes of the desktop CT system, making it difficult to achieve precise switching of shielding states. At the same time, existing structures are mostly of fixed size and material, and cannot flexibly replace shielding components according to the radiation protection requirements of different experiments, resulting in poor applicability and failing to meet the dynamic adjustment requirements of diverse experimental operations for the shielding of the light outlet. Utility Model Content

[0005] The present invention aims to solve the technical problems in the prior art where the shielding of the X-ray output port of a desktop CT system relies heavily on manual operation, resulting in low efficiency and radiation exposure risks. Furthermore, some simple shielding structures lack automated control capabilities, cannot be linked with CT system parameters, and cannot flexibly replace shielding components to adapt to diverse experimental needs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automatic light-blocking device for the X-ray output port of a desktop CT system includes: The support components provide a stable and fixed support base for the entire automatic shuttering device, including a bottom bracket, an extension bracket, a bottom plate, and a sensor bracket. The drive component is a miniature electric actuator, which generates thrust or pull through its own extension and retraction, driving the rotating rod to rotate around the connection point of the bottom plate. The shielding assembly includes a rotating rod and a shielding plate. The rotating rod is driven by a miniature electric push rod to rotate around the bottom plate, thereby causing the shielding plate at the end to shield or move away from the X-ray machine's light outlet. The position detection component consists of sensor I and sensor II. By detecting the protrusions and sensor baffles on the rotating rod, it sends a signal back to the PLC to control the start and stop of the miniature electric push rod, thereby achieving precise positioning for the opening and closing of the device.

[0007] This automatic shielding device, through the coordinated action of the support component, drive component, shielding component, and position detection component, can automatically shield and move the X-ray machine's output port, meeting the needs of radiation protection in live experiments and equipment preheating radiation control. It is easy to operate and has precise positioning, and is compatible with desktop CT systems for compact installation.

[0008] Preferably, the bottom bracket and the extension bracket are fixed to form an L-shaped fixing structure. The bottom plate is installed on the side of the extension bracket, and the sensor bracket is placed on the bottom plate. The bottom bracket and the extension bracket form an L-shaped structure. The bottom plate and the sensor bracket are installed in an orderly manner, which can provide a stable and reasonable installation foundation for each component of the device and ensure the stability of the overall structure.

[0009] Preferably, one end of the miniature electric push rod is rotatably connected to the bottom bracket, and the other end is rotatably connected to the rotating rod of the blocking component. The two ends of the miniature electric push rod are rotatably connected to the bottom bracket and the rotating rod respectively, which can flexibly drive the rotating rod to rotate, avoid movement jamming, and ensure smooth blocking / removal action.

[0010] As a preferred embodiment, one end of the rotating rod is rotatably connected to the bottom plate, and the end is fixedly installed with a shielding plate. This combination of rotatable connection and shielding plate allows for flexible rotation and precise application of the shielding plate to the X-ray machine's output port, ensuring effective shielding.

[0011] Preferably, sensor I is mounted on the bottom plate, and sensor II is mounted on the sensor bracket. The protrusion that adapts to sensor I and the sensor baffle that adapts to sensor II are both mounted on the rotating rod. With sensor I and sensor II mounted on the bottom plate and sensor bracket respectively, and the protrusion and sensor baffle mounted on the rotating rod, the opening and closing status of the device can be accurately detected, providing a reliable signal for precise control.

[0012] Preferably, the miniature electric actuator, sensor I, and sensor II are all connected to an external PLC controller. The PLC drives the miniature electric actuator through software control and controls its start and stop based on the feedback signals from sensor I and sensor II to complete the opening and closing of the device. The miniature electric actuator and the two sensors are all connected to an external PLC, and the automatic opening and closing of the device is realized through software control and signal feedback, which improves the degree of automation of operation and reduces manual intervention.

[0013] Compared with the prior art, the technical effects and advantages of this utility model are: (1) This utility model realizes the automatic switching of the output port blocking state of the desktop CT system X-ray machine. There is no need to manually add or remove the blocking parts. This not only avoids the radiation exposure risk that may be caused by manual operation, but also improves the operation efficiency. It can accurately respond to experimental needs and solves the problems of low efficiency and poor safety of manual operation in the prior art.

[0014] (2) This utility model can automatically match the parameters such as the shielding device and the CT system scanning process and equipment tube pressure changes through the linkage of the external PLC controller and the software system. It can automatically complete the shielding or removal action according to the experimental mode or equipment status. At the same time, the shielding plate can be flexibly replaced according to different experimental scenarios to adapt to diverse radiation protection needs, making up for the shortcomings of the existing simple shielding structure that lacks automatic linkage capability and has poor applicability.

[0015] (3) This utility model adopts a modular design with compact structure of each component. During installation, it can fully adapt to the limited space inside the desktop CT system, reduce the overall volume occupied by the device, and make the equipment layout more reasonable. Moreover, the position detection component accurately controls the occupancy status, ensuring that the occupancy sheet can accurately cover or move away from the X-ray machine's light outlet, which improves the stability and reliability of the device operation and is superior to the existing occupancy scheme with loose structure and insufficient positioning accuracy. Attached Figure Description

[0016] Figure 1 This is a diagram showing the state of the present invention when it is opened; Figure 2 This is a diagram showing the state of the present invention when it is closed.

[0017] In the diagram: 1. Bottom bracket; 2. Extension bracket; 3. Sensor I; 4. Bottom plate; 5. Sensor bracket; 6. Sensor II; 7. Rotating rod; 8. Shielding plate; 9. Miniature electric push rod; 10. Protrusion; 11. Sensor baffle. Detailed Implementation

[0018] 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.

[0019] The following combination Figures 1 to 2 This application will be described in further detail; This application uses the desktop CT system developed by Pingsheng Medical Technology (Kunshan) Co., Ltd. as an example. Addressing the needs of X-ray machine output port radiation protection in live experiments and equipment preheating radiation control, it provides a complete solution for an automatic shielding device. The device adopts a modular design, integrating four core components: a support component, a drive component, a shielding component, and a position detection component. Combined with an external PLC controller and software control system, it can achieve precise and automatic switching of the X-ray machine output port shielding state. This not only adapts to the compact installation requirements of desktop CT systems but also meets radiation protection standards for various experimental scenarios.

[0020] The support assembly serves as the fixed foundation for the device and must possess sufficient structural strength to ensure stable operation while also being compatible with the internal installation space of the desktop CT system. The support assembly includes a bottom bracket 1, an extension bracket 2, a bottom plate 4, and a sensor bracket 5. The bottom bracket 1 is connected to the internal fixed bracket of the desktop CT system; the extension bracket 2 is welded to the bottom bracket 1 to form an L-shaped structure, with threaded holes pre-drilled on the side for mounting the bottom plate 4.

[0021] The bottom plate 4 in the support assembly is made of rust-proof and rigid stainless steel. One side is fixed to the extension bracket 2, and the other side has a reserved pin hole to connect with the rotating rod plate 7. The end near the bottom bracket 1 has a reserved threaded hole for installing sensor I 3. The sensor bracket 5 is also made of rust-proof material and is made into a specific shape by bending process. The vertical section is fixed to the bottom plate 4, and the horizontal section has a reserved threaded hole for installing sensor II 6.

[0022] The core of the drive assembly is a miniature electric actuator 9, specifically model TJC-C1-100, which meets the requirements for high-precision telescopic control, compact installation, and stable thrust output. One end of the miniature electric actuator 9 is rotatably connected to the bottom bracket 1, and the other end is rotatably connected to the rotating rod 7 of the shielding assembly.

[0023] The shielding assembly includes a rotating rod 7 and a shielding plate 8. The shielding assembly is used to effectively shield and quickly remove the X-ray machine's light outlet, and the shielding plate 8 is replaceable. One end of the rotating rod 7 is connected to the bottom plate 4 via a pin. The rotating rod 7 is also provided with a protrusion 10 for triggering sensor I3 and a sensor baffle 11 for triggering sensor II6.

[0024] The shielding plate 8 of the shielding component is made of a material that has a certain attenuation effect on X-rays by default to meet the radiation protection requirements of live experiments. It also supports the replacement of other materials according to different scenarios. The size of the shielding plate 8 can be customized according to the size of the X-ray machine's output port. A mounting hole is reserved in the center and it is fixed to the end of the rotating rod plate 7 with bolts to avoid interference with the edge of the X-ray machine's output port.

[0025] The position detection component consists of sensor I3 and sensor II6, both of which are specific types of sensors with high response speed and anti-interference capabilities, and can adapt to the strong electromagnetic environment inside the CT system. Sensor I3 is installed in a preset hole in the bottom plate 4 to detect the closed state of the device; sensor II6 is installed in a preset hole in the sensor bracket 5 to detect the open state of the device. Both are designed to ensure accurate detection.

[0026] The external control system consists of a PLC controller and software system, realizing the automated control of the device. The PLC controller communicates with the main control computer of the desktop CT system; During device installation, first install the support assembly, then fix the bottom bracket 1, weld the extension bracket 2, install the bottom plate 4 and sensor bracket 5 in sequence, and ensure the installation accuracy of each component; next, install the drive assembly, connect the two ends of the miniature electric push rod 9 to the corresponding components, and check the smoothness of extension and retraction; then install the shielding assembly, connect the rotating rod 7 to the bottom plate 4, and select and fix the shielding plate 8 according to the requirements; next, install the position detection assembly, fix the sensor and connect the wiring, and check the indicator light status; finally, perform electrical connection and debugging to ensure that the movement trajectory of the shielding plate 8 is accurate and the sensor signal feedback is timely.

[0027] When the device is powered on, it is in the closed state by default. At this time, the miniature electric push rod 9 is fully retracted, the rotating rod 7 is kept in a horizontal position, and the protrusion 10 on the rod passes through the slot of sensor I3. Sensor I3 detects the signal and feeds it back to the PLC. The PLC then feeds back the status to the software. The software interface displays the corresponding indicator light, indicating that the device is ready and does not affect the normal scanning of the X-ray machine.

[0028] When it is necessary to block the X-ray machine's output port, the software system will automatically send an "open device" command to the PLC based on the experimental mode or a specific signal, or through manual operation. The PLC controls the extension of the miniature electric push rod 9, which pushes the rotating rod 7 to rotate. When the sensor baffle 11 passes through the slot of sensor II 6, sensor II 6 sends a feedback signal to the PLC, and the PLC disconnects the power supply to the push rod. The device completes the opening action, and the baffle 8 covers the output port. The corresponding indicator light is displayed on the software interface.

[0029] After the experiment ends or the equipment preheats, the software system will automatically or manually send a "close device" command to the PLC based on the experiment end signal or a specific signal. The PLC controls the miniature electric push rod 9 to retract, pulling the rotating rod 7 to rotate in the opposite direction. When the protrusion 10 passes through the slot of sensor I3, sensor I3 sends a feedback signal to the PLC, which disconnects the push rod from the reverse power supply, completing the device's closing action. The shielding plate 8 moves away, and the corresponding indicator light is displayed on the software interface. The device also has an abnormal handling mechanism; alarms will be triggered if the sensor signal times out or the push rod experiences overcurrent. The software also includes an emergency stop button to ensure the safety of the equipment and personnel.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic light-blocking device for the X-ray output port of a desktop CT system, characterized in that, include: The support components provide a stable and fixed support base for the entire automatic shielding device, including a bottom bracket (1), an extension bracket (2), a bottom plate (4), and a sensor bracket (5). The driving component is a miniature electric push rod (9), which generates thrust or pull force through its own extension and retraction action, driving the rotating rod (7) to rotate around the connection point of the bottom plate (4); The shielding assembly includes a rotating rod (7) and a shielding plate (8). The rotating rod (7) is driven by a miniature electric push rod (9) to rotate around the bottom plate (4), thereby driving the shielding plate (8) at the end to shield or remove the X-ray machine's light outlet. The position detection component consists of sensor I (3) and sensor II (6). By detecting the protrusion (10) and sensor baffle (11) on the rotating rod (7), it sends a signal to the PLC to control the start and stop of the micro electric push rod, thereby achieving precise positioning of the device opening and closing.

2. The automatic light-blocking device for the X-ray output port of a desktop CT system according to claim 1, characterized in that: The bottom bracket (1) and the extension bracket (2) are fixed to form an L-shaped fixed structure. The bottom plate (4) is installed on the side of the extension bracket (2), and the sensor bracket (5) is set on the bottom plate (4).

3. The automatic light-blocking device for the X-ray output port of a desktop CT system according to claim 1, characterized in that: One end of the miniature electric actuator (9) is rotatably connected to the bottom bracket (1), and the other end is rotatably connected to the rotating rod (7) of the shielding assembly.

4. The automatic light-blocking device for the X-ray output port of a desktop CT system according to claim 1, characterized in that: One end of the rotating rod (7) is rotatably connected to the bottom plate (4), and the end is fixedly installed with a shielding plate (8).

5. The automatic light-blocking device for the X-ray output port of a desktop CT system according to claim 1, characterized in that: Sensor I (3) is mounted on the bottom plate (4), and sensor II (6) is mounted on the sensor bracket (5). The protrusion (10) that adapts to sensor I (3) and the sensor baffle (11) that adapts to sensor II (6) are both mounted on the rotating rod (7).

6. The automatic light-blocking device for the X-ray output port of a desktop CT system according to claim 1, characterized in that: The miniature electric push rod (9), sensor I (3), and sensor II (6) are all connected to an external PLC controller. The PLC drives the miniature electric push rod (9) through software control, and controls its start and stop based on the feedback signals of sensor I (3) and sensor II (6) to complete the opening and closing of the device.

Images