A CT scan automated body position adjusting device
The automated CT scan positioning device uses servo motors and pressure sensors to automatically adjust the patient's position, solving the problems of difficult positioning and low image clarity in traditional CT scans. This improves scanning accuracy and operational efficiency, and meets the needs of patients of different body types.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG UNIV
- Filing Date
- 2025-03-14
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional CT scans present significant challenges for patients in adjusting their position, especially when scanning specific areas, as respiratory movements and changes in body position can significantly affect image clarity, increasing the risk of missed or misdiagnosed diagnoses. Furthermore, the lack of effective positioning adaptations for patients of different body types can compromise diagnostic accuracy.
Design an automated patient positioning device for CT scans, comprising a base, a bed base, an arc-shaped bed board, and a pressure adjustment system. It utilizes a servo motor and pressure sensors to achieve automatic and precise adjustment and real-time calibration of the patient's position, and integrates a wireless communication module to achieve data sharing and alarm functions.
It improves the accuracy and reliability of CT scans, reduces the rate of missed diagnoses, increases operational efficiency, reduces human error, enhances equipment stability and information management, adapts to patients of different body types, and shortens the scanning process time.
Smart Images
Figure CN224523115U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical diagnostic and treatment equipment technology, specifically relating to an automated body position adjustment device for CT scanning. Background Technology
[0002] In medical diagnosis, CT scans serve as a crucial imaging technique, providing doctors with detailed information about the body's internal structures. However, current traditional CT scans have significant drawbacks. The scan relies heavily on the patient's self-adjustment, which presents considerable difficulty, especially for scanning specific areas. For instance, lung nodules in the posterior costophrenic angle are highly susceptible to changes in respiratory movement and body position. During respiration, the lungs rise and fall, causing the nodule's location to shift. Furthermore, maintaining a specific position for extended periods inevitably involves subtle positional shifts. These factors significantly reduce the clarity of CT scan images, leading to missed or misdiagnosed cases and severely impacting the accuracy and reliability of medical diagnoses. Moreover, the lack of effective positioning devices for patients of different body types makes optimal scanning results difficult, further complicating diagnosis. Utility Model Content
[0003] To address the problems and shortcomings of the existing technology, this utility model provides an automated body position adjustment device for CT scans. Through innovative structural design and intelligent control strategy, it realizes automatic and precise adjustment and real-time calibration of the patient's body position, better adapts to patients of different body types, and improves the accuracy and reliability of CT scan diagnosis.
[0004] This utility model is achieved through the following technical solution: An automated body positioning device for CT scanning is installed at the front end of a CT scanner. The central area of the CT scanner forms a scanning zone. The positioning device includes a base, a bed base, an arc-shaped bed board, and a pressure adjustment system. The base has a ground rail at its bottom, allowing it to move along the rail's extension direction to guide the arc-shaped bed board into the scanning zone. The bed base is slidably connected to the top of the base. A first motor is installed between the bed base and the base, driving the bed base to move relative to the base along its extension direction. The arc-shaped bed board is supported above the bed base by an arc-shaped bracket, allowing it to rotate at a set angle relative to the bracket. A second motor drives the arc-shaped bed board to rotate between the arc-shaped bed board and the bed base. The pressure adjustment system includes several pressure sensors installed on the inner side of the arc-shaped bed board and a controller connected to each pressure sensor. The controller is connected to the second motor. This device enables overall device position adjustment, patient horizontal and angular position adjustment, and real-time monitoring and automatic calibration of body position, improving CT scan accuracy.
[0005] Furthermore, the curved bed board has curved grooves on both sides, and two curved supports are provided on both sides of the curved bed board. The curved supports have curved protrusions that are inserted into the curved grooves. The arc length of the curved grooves is greater than the arc length of the curved protrusions, ensuring that the curved bed board can rotate smoothly relative to the curved supports, providing a structural basis for body position adjustment.
[0006] Furthermore, pressure-sensitive switches are installed at both ends of the arc-shaped groove. These switches are electrically connected to the second motor, and the arc-shaped convex plate presses against the pressure-sensitive switches to shut off the second motor. This provides limit protection for the rotation of the arc-shaped bed plate, preventing excessive rotation from damaging the equipment.
[0007] Furthermore, the bottom of the curved bed board is equipped with a curved rack, and the second motor is equipped with a transmission gear that meshes with the curved rack, so as to realize the precise power transmission of the second motor to the curved bed board and ensure the accuracy of angle adjustment.
[0008] Furthermore, the bottom of the curved bed board has an arc-shaped protrusion, and support wheels are installed on the bed bottom board to abut against the arc-shaped protrusion, supporting the curved bed board and ensuring its stability during rotation.
[0009] Furthermore, there are two arc-shaped protrusions located on both sides of the arc-shaped bed board, and four support wheels located on both sides of the arc-shaped protrusions, which enhances the support stability of the arc-shaped bed board and adapts to different patient weight distributions.
[0010] Furthermore, a sliding frame is fixed above the base, and a sliding plate that cooperates with the sliding frame protrudes from the bottom of the bed base. The first motor is fixed to the base and can push the sliding plate to slide relative to the sliding frame, so as to realize the smooth horizontal movement of the bed base and facilitate precise adjustment of the patient's position.
[0011] Furthermore, the pressure sensor adopts a thin-film pressure sensor with a thickness of less than 3mm.
[0012] Furthermore, the body position adjustment device also includes a wireless communication module, which connects to the hospital information system to realize the information management of medical data, facilitate data transmission and sharing, and improve the efficiency of medical work.
[0013] Furthermore, the patient positioning device also includes an alarm module. When the pressure sensor detects that the patient's position exceeds a safe threshold and the controller is unable to complete the positioning calibration within the set time, the alarm module issues an audible and visual alarm signal. This timely alerts medical staff when automatic positioning calibration malfunctions, ensuring the accuracy of the patient's position and preventing scan failures or severe degradation of image quality due to positioning issues.
[0014] The beneficial effects of this utility model are: 1. Servo motors precisely control body position to meet different scanning needs and reduce the rate of missed diagnoses and misdiagnoses. 2. Excellent patient fit: Based on pressure sensor data, it automatically adapts to the body position of patients of different body types, which is especially convenient for patients with limited mobility or special diseases, improving cooperation and the feasibility of examination. 3. Highly efficient and convenient operation: Automated adjustment reduces manual operation by medical staff and avoids human error. When linked with a CT scanner, it automatically starts scanning and optimizes parameters, reducing scanning time by 15%-20%. 4. Stable and Easy-to-Maintain Equipment: The equipment features a rationally designed mechanical structure, durable rails, and high stability. Modular design and high-quality materials facilitate the replacement of key components, while wireless communication enables remote monitoring, reducing maintenance costs and downtime. 5. Upgrade of medical information technology: Wireless communication enables real-time data sharing, facilitating remote viewing by doctors. Attached Figure Description
[0015] Figure 1 A connection diagram illustrating one embodiment of an automated body position adjustment device for CT scanning according to this utility model; Figure 2 This is a schematic diagram illustrating one embodiment of an automated body position adjustment device for CT scanning according to the present invention. Figure 3 Used to explain Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 Used to explain Figure 2 Enlarged view of a portion of point B in the middle; Figure 5 A side view illustrating one embodiment of an automated body position adjustment device for CT scanning according to the present invention; Figure 6 A front view illustrating an illustrative embodiment of an automated body positioning device for CT scanning according to this utility model.
[0016] List of components and reference numerals: 1. CT scanner; 11. Scanning area; 2. Base; 21. Floor rail; 22. Sliding frame; 3. Bed base; 31. First motor; 32. Support wheels; 33. Slide plate; 4. Curved bed board; 41. Second motor; 411. Transmission gear; 42. Curved groove; 43. Pressure-sensitive switch; 44. Curved rack; 45. Curved protrusion; 5. Curved bracket; 51. Curved convex plate; 6. Pressure sensor. Detailed Implementation
[0017] 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.
[0018] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of this utility model are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.
[0019] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of this utility model not only refer to changes in position, but also include movements such as rotation and rolling in which the position does not change relative to the position, but the state changes.
[0020] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.
[0021] like Figures 1 to 6 This diagram illustrates an automated body positioning device for CT scans. The device is installed at the front end of a CT scanner 1, with the central area of the scanner 1 designated as the scanning area 11. The device primarily consists of a base 2, a bed base 3, an arc-shaped bed board 4, and a pressure adjustment system. The base 2 has a floor rail 21 at its bottom, allowing movement along its extension direction for flexible overall position adjustment. The bed base 3 is slidably connected to the top of the base 2 and is driven by a first motor 31, enabling movement relative to the base 2 along its own extension direction to adjust the patient's horizontal position. The arc-shaped bed board 4 is mounted above the bed base 3 via an arc-shaped support 5 and can rotate relative to the support 5 at a set angle, driven by a second motor 41, to adjust the patient's lying angle. The pressure adjustment system includes several pressure sensors 6 installed inside the arc-shaped bed board 4 and a controller connected to them. The controller is connected to the second motor 41 and can adjust the angle of the arc-shaped bed board 4 in real time according to changes in the patient's position. The design of key components is as follows: 1. Connection between the curved bed board 4 and the support frame: The curved bed board 4 has curved grooves 42 on both sides. Two corresponding curved supports 5 are provided on both sides of the curved bed board 4. The curved protrusions 51 on the supports can be inserted into the curved grooves 42, and the arc length of the curved grooves 42 is greater than the arc length of the curved protrusions 51, ensuring that the curved bed board 4 can rotate smoothly. Pressure-sensitive switches 43 are provided at both ends of the curved grooves 42, which are electrically connected to the second motor 41. When the curved protrusions 51 press the pressure-sensitive switches 43, the second motor 41 can be turned off, which serves as a limit protection function. 2. Power transmission structure: The bottom of the arc-shaped bed plate 4 is provided with an arc-shaped rack 44, which meshes with the transmission gear 411 on the second motor 41 to achieve precise power transmission and accurately control the rotation angle of the arc-shaped bed plate 4. 3. Support structure: The bottom of the curved bed board 4 has curved protrusions 45 on both sides, and the bed base board 3 is equipped with corresponding support wheels 32, two on each side, located on both sides of the curved protrusions 45, to ensure that the curved bed board 4 rotates smoothly. 4. Horizontal movement structure: A sliding frame 22 is fixed above the base 2. The sliding plate 33 protruding from the bottom of the bed base 3 cooperates with the sliding frame 22. The first motor 31 is fixed on the base 2 and pushes the sliding plate 33 to slide relative to the sliding frame 22, so as to realize the smooth horizontal movement of the bed base 3 and accurately adjust the patient's horizontal position. 5. Pressure Sensing and Control: A thin-film pressure sensor 6 with a thickness of less than 3mm is used, offering high sensitivity. 6. Additional Functional Modules: The device is equipped with a wireless communication module, connecting to the hospital information system for information-based management of medical data and convenient data transmission and sharing. An alarm module is included; when the pressure sensor 6 detects that the patient's position exceeds a safe threshold and the controller cannot complete position calibration within a set time, an audible and visual alarm signal is issued to alert medical staff for timely intervention. The first motor 31 and the second motor 41 are both servo motors with position feedback function, achieving control accuracies of ±0.1mm (movement distance of the bed base 3) and ±0.5° (rotation angle of the curved bed board 4), respectively. Foldable armrests on both sides of the curved bed board 4 are connected by hinges. Pressure sensor switches on the armrests are triggered when the patient grips the armrests, and the controller adjusts the monitoring threshold of the pressure sensor 6 accordingly to adapt to changes in the patient's position caused by gripping the armrests. The device is linked to the scanning parameter setting system of the CT scanner 1. After the pressure regulation system detects that the patient's position adjustment is complete and stable, it automatically sends a signal to the CT scanner 1 to start the scan and optimizes the scanning parameters (such as tube current, tube voltage, and scanning slice thickness) based on the patient's position and body shape data. The ground rail 21 is made of stainless steel with a chrome-plated surface to improve wear resistance and corrosion resistance, ensuring smooth and stable movement of the base 2 and extending its service life to more than 10 years.
[0022] Example 1: Routine application in hospital diagnosis and treatment: 1. Installation and Debugging: In the CT room of a general hospital, install the automated CT scanning position adjustment device at the front end of the CT scanner 1. Ensure that the base 2 is securely connected to the ground rail 21 and that all components are installed correctly. Connect the power and control lines of the first motor 31 and the second motor 41, and debug the motors to ensure that the bed base 3 can move smoothly along the extension direction of the base 2 and that the curved bed board 4 can rotate smoothly relative to the curved support 5. Calibrate the pressure sensor 6 and set an appropriate positional offset threshold. At the same time, connect the wireless communication module to the hospital information system, test the stability of data transmission, and ensure that patient position data and equipment operating status can be uploaded in real time.
[0023] 2. Scanning Process: When a patient arrives for a CT scan, medical staff guide the patient to lie down on the curved bed board 4. Once the patient is in position, the thin-film pressure sensor 6 in the pressure regulation system immediately begins working, collecting real-time pressure distribution data of the patient's position and transmitting this data to the controller. If the patient's position shifts due to breathing or other reasons, and the shift reaches a preset threshold, the controller quickly sends a command to the second motor 41 to adjust the angle of the curved bed board 4, restoring the patient to the optimal scanning position. When scanning specific areas, such as the posterior costophrenic angle, the system automatically adjusts the position and angle of the bed base 3 and the curved bed board 4 according to a pre-set scanning plan for that area to obtain the best imaging results. If the patient's position exceeds the safety threshold and the controller cannot complete the position calibration within the set time, the alarm module immediately issues an audible and visual alarm signal to remind medical staff to intervene manually. Once the pressure regulation system detects that the patient's position has been adjusted and stabilized, it automatically sends a signal to the CT scanner 1 to start the scan. Based on the patient's position and body shape data, it automatically optimizes the scanning parameters of the CT scanner 1, such as tube current, tube voltage, and scanning slice thickness. 3. Effectiveness Evaluation: After a period of use, the hospital's CT scan room showed a significant improvement in the imaging quality of lung nodules in the posterior costophrenic angle. Compared with traditional CT scans, image clarity improved by 45%, and the missed diagnosis rate decreased by 32%. The work efficiency of medical staff improved significantly, with a substantial reduction in the time spent manually adjusting patient positions, allowing them to devote more energy to other medical tasks. Patient feedback on the comfort of the scanning process was positive, and scan interruptions due to discomfort were significantly reduced. Through the wireless communication module, doctors could view patient scan positions and related data in real time from their offices, improving diagnostic efficiency by 35%.
[0024] Example 2: Application of batch testing in a health checkup center: 1. Customized Configuration: The health checkup center customized the automated body positioning device for CT scans based on its business characteristics and equipment layout. Since the center needs to perform rapid scans on a large number of people with different body types, the focus was on optimizing the pressure regulation system's ability to process data on different body types and the bed's rapid adjustment function. Common body type data templates, including height, weight, and body shape characteristics, were entered into the system to quickly set the initial bed position and angle based on the patient's body type before scanning. Simultaneously, to accommodate the high volume of patients at the health checkup center, the device's operation process was simplified to improve scanning efficiency. The integration of the wireless communication module with the health checkup center's information management system was strengthened to achieve rapid data integration and analysis, facilitating the generation of health checkup reports. 2. Operation and Maintenance: During daily operation, pressure sensor 6 is calibrated daily to ensure the accuracy of its monitoring data. Regular maintenance is performed on the first motor 31, the second motor 41, and transmission components, including checking gear wear, motor operating status, adding lubricating oil as needed, and replacing worn parts to ensure normal equipment operation. A designated person is responsible for the cleaning and maintenance of the equipment, regularly cleaning stains from the bed surface and checking for loose connections. Real-time monitoring of equipment operating data, such as motor operating current and the operating status of pressure sensor 6, is conducted via a wireless communication module to proactively identify and address potential problems, ensuring stable equipment operation. 3. Benefit Analysis: During the large-scale screening process at the health checkup center, this body positioning device played a crucial role. Scanning efficiency was significantly improved, with the number of people able to complete scans daily increasing by 25%. Due to the improved image quality, the accuracy rate of early disease screening increased by 30%, enabling more accurate detection of potential health problems and providing examinees with more reliable health assessments. Simultaneously, through automated body positioning and information management, the health checkup process was optimized, examinees' waiting time was shortened, satisfaction was significantly improved, and the competitiveness of the health checkup center was further enhanced.
[0025] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. An automated body positioning device for CT scanning, installed at the front end of a CT scanner, wherein a scanning area is formed in the middle region of the CT scanner, characterized in that, The body position adjustment device includes: A base, the bottom of which is provided with a ground rail, and the base is capable of moving along the extension direction of the ground rail; A bed base plate, which is slidably connected to the top of the base, and a first motor is installed between the bed base plate and the base. The first motor can drive the bed base plate to move relative to the base along the extension direction of the bed base plate. An arc-shaped bed board is mounted above the bed base via an arc-shaped bracket. The arc-shaped bed board can rotate relative to the arc-shaped bracket at a set angle. A second motor that drives the arc-shaped bed board to rotate is provided between the arc-shaped bed board and the bed base. The pressure regulation system includes several pressure sensors installed on the inner side of the curved bed board and a controller connected to each pressure sensor. The controller is connected to the second motor control.
2. The automated body positioning device for CT scanning according to claim 1, characterized in that, The curved bed board has curved grooves on both sides, and there are two curved supports located on both sides of the curved bed board. The curved supports have curved protrusions that are inserted into the curved grooves, and the arc length of the curved grooves is greater than the arc length of the curved protrusions.
3. The automated body positioning device for CT scanning according to claim 2, characterized in that, Pressure-sensitive switches are provided at both ends of the arc-shaped groove. The pressure-sensitive switches are electrically connected to the second motor. The arc-shaped convex plate presses the pressure-sensitive switches to shut down the second motor.
4. The automated body positioning device for CT scanning according to claim 1, characterized in that, The bottom of the arc-shaped bed board is provided with an arc-shaped rack, and the second motor is provided with a transmission gear that meshes with the arc-shaped rack.
5. The automated body positioning device for CT scanning according to claim 1, characterized in that, The bottom of the curved bed board has an arc-shaped protrusion, and the bed bottom board is equipped with support wheels that abut against the arc-shaped protrusion.
6. The automated body positioning device for CT scanning according to claim 5, characterized in that, Two arc-shaped protrusions are provided and located on both sides of the arc-shaped bed board, and four support wheels are provided and located on both sides of the arc-shaped protrusions.
7. The automated body positioning device for CT scanning according to claim 1, characterized in that, A sliding frame is fixed above the base, and a sliding plate that cooperates with the sliding frame protrudes from the bottom of the bed base. The first motor is fixed to the base and can push the sliding plate to slide relative to the sliding frame.
8. The automated body positioning device for CT scanning according to claim 1, characterized in that, The pressure sensor is a thin-film pressure sensor with a thickness of less than 3 mm.
9. The automated body positioning device for CT scanning according to claim 1, characterized in that, The body position adjustment device also includes a wireless communication module, which is connected to the hospital information system.
10. The automated body positioning device for CT scanning according to claim 1, characterized in that, The body position adjustment device also includes an alarm module. When the pressure sensor detects that the patient's body position exceeds the safety threshold and the controller is unable to complete the body position calibration within the set time, the alarm module issues an audible and visual alarm signal.