A support device based on a cardiac magnetic resonance examination

Abstract

The utility model belongs to medical image examination auxiliary equipment technical field, concretely relates to a support device based on heart magnetic resonance examination. The device includes first support board, has the sliding block on first support board, is fixedly connected with the sliding block on the second support board, has the lifting frame on the second support board and goes up and down, the clamping plate is connected in the linear sliding of lifting frame, still rotationally connects the adjusting screw on the lifting frame, and the adjusting screw is connected with clamping plate screw thread. Through above -mentioned structure, the vertical height and horizontal position adjustment of clamping plate can be realized, are favorable to the body position fixation to the child patient, and further guarantee the stability of the position of the sick child in the examination process, improve the acquisition quality of heart magnetic resonance image.

Description

Technical Field

[0001] This utility model belongs to the technical field of medical imaging examination auxiliary equipment, specifically relating to a support device based on cardiac magnetic resonance imaging examination. Background Technology

[0002] Magnetic resonance imaging (MRI) is an imaging technique based on the nuclear magnetic resonance phenomenon of hydrogen nuclei in a static magnetic field. It excites hydrogen proton energy level transitions by applying radio frequency pulses and receives their echo signals. Spatial localization is achieved using a gradient magnetic field, and finally, high-resolution tomographic images of tissue structures are reconstructed using methods such as Fourier transform. Its advantages, including non-invasiveness, multi-parameter imaging capabilities, no ionizing radiation, and excellent soft tissue contrast, have made it an important tool for assessing the structure and function of cardiovascular diseases. In recent years, with the optimization of imaging sequences and improvements in hardware performance, cardiac MRI has been widely used in the diagnosis of diseases such as myocarditis, cardiomyopathy, myocardial ischemia, and congenital heart disease. However, cardiac MRI examinations typically take 45-60 minutes and require patients to remain strictly still. Children, due to their immature physiological development, weaker self-control, and anxiety, are prone to involuntary movements (such as trunk twisting and fluctuations in respiratory amplitude) during the examination, affecting the spatial consistency of image acquisition and thus leading to decreased image quality and affecting diagnostic accuracy. Therefore, there is an urgent need to develop a fixation device that can dynamically adapt to body position based on cardiac magnetic resonance imaging (MRI) to reduce motion artifacts, improve image stability, and increase the success rate of the examination. Utility Model Content

[0003] To address the aforementioned issues, this invention provides a support device for cardiac magnetic resonance imaging (MRI) examinations, which solves the problem that pediatric patients are prone to body movement during MRI examinations, leading to a decrease in image quality.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a support device for cardiac magnetic resonance imaging examination, comprising a first support plate, a slider slidably connected to the first support plate, a second support plate fixedly connected to the slider, a lifting frame slidably connected to the second support plate, a clamping plate linearly slidably connected to the lifting frame, and an adjusting screw rotatably connected to the lifting frame, the adjusting screw being threadedly connected to the clamping plate.

[0005] Furthermore, a pair of translation worm gears are rotatably connected to the first support plate, and a translation worm wheel that meshes with the translation worm gears is also provided on the first support plate. A translation screw is coaxially fixedly connected to the translation worm wheel, and the slider is threadedly connected to the translation screw.

[0006] Furthermore, a drive shaft is rotatably connected to the second support plate, and a pair of first bevel gears are provided on the drive shaft. The second support plate is also provided with a second bevel gear that meshes with the first bevel gears. A first worm is fixedly connected to the second bevel gear. A first worm wheel that meshes with the first worm is rotatably connected to the second support plate. The first worm wheel is coaxially fixedly connected to the second worm. A second worm wheel that meshes with the second worm is also provided on the second support plate. The second worm wheel is connected to a lifting mechanism.

[0007] Furthermore, the lifting mechanism includes a connecting rod fixed to the second worm gear, a sliding groove on the lifting frame, and a sliding column on the connecting rod that slides in cooperation with the sliding groove.

[0008] 1. This device can adjust the vertical height and horizontal position of the clamping plate, making it easy to fix the patient according to different body shapes, thereby improving the stability of the examination and the clarity of the image.

[0009] 2. This device can achieve horizontal movement of the second support plate, which facilitates accurate positioning of the patient in the scanning area of ​​the magnetic resonance imaging equipment and improves work efficiency.

[0010] 3. This device has a compact structure and is easy to operate. The main components are made of non-metallic materials, which meets the safety requirements of the magnetic resonance environment. Attached Figure Description

[0011] Figure 1 This is an isometric view of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of the second support plate, slider, and their accessories in this utility model;

[0013] Figure 3 This is a schematic diagram of the clamping plate and lifting frame in this utility model;

[0014] Figure 4 This is a schematic diagram of the lifting mechanism in this utility model;

[0015] In the figure: 1. First support plate; 2. Second support plate; 3. Clamping plate; 4. Lifting frame; 401. Drive shaft; 402. First bevel gear; 403. First worm gear; 404. Second worm gear; 405. Connecting rod. Detailed Implementation

[0016] like Figures 1 to 4 As shown, this utility model provides a support device for cardiac nuclear resonance examination, including a first support plate 1, a slider slidably connected to the first support plate 1, a second support plate 2 fixedly connected to the slider, a lifting frame 4 vertically connected to the second support plate 2, a clamping plate 3 linearly slidably connected to the lifting frame 4, and an adjusting screw rotatably connected to the lifting frame 4, the adjusting screw being threadedly connected to the clamping plate 3.

[0017] When using this device, the pediatric patient is placed on the second support plate 2, and the waist and abdomen are fixed by adjusting the clamping plate 3 to prevent movement during the examination. Then, the first support plate 1 is lifted as a whole, and the device is placed on the MRI examination table. Medical staff can adjust the position of the second support plate 2 using the slider to accurately align the target organ to be scanned with the center of the MRI scanner. All structural components of this device are made of non-metallic materials to reduce the overall weight, facilitate movement and placement during MRI examinations, and minimize interference with the magnetic field, meeting the safety requirements for the use of MRI equipment.

[0018] The first support plate 1 is equipped with a rotatable translation worm gear and a translation worm wheel. A translation screw is fixed on the translation worm wheel and threadedly connected to the slider. When it is necessary to adjust the horizontal position of the child, rotating the translation worm gear will drive the slider and the second support plate 2 to move horizontally as a whole, so as to achieve precise positioning of the child.

[0019] The second support plate 2 is provided with a transmission shaft 401, a first bevel gear 402 and a second bevel gear meshing with it. The second bevel gear drives the first worm 403, which in turn drives the first worm wheel and the second worm 404. The second worm then drives the second worm wheel meshing with it, and finally drives the lifting mechanism to achieve lifting.

[0020] The lifting mechanism includes a connecting rod 405 connected to the second worm gear. The lifting frame 4 is provided with a sliding groove. A sliding column is connected to the connecting rod 405 and slides in cooperation with the sliding groove. Through the above structure, the vertical height and horizontal position of the clamping plate 3 can be precisely adjusted to meet the fixation needs of children of different body sizes and improve the success rate of cardiac magnetic resonance examination for children.

[0021] In summary, this invention has a reasonable structure and is easy to operate, which can effectively improve the image quality and operational efficiency in pediatric cardiac magnetic resonance imaging examinations, and has good application prospects.

Claims

1. A support device based on cardiac magnetic resonance imaging (MRI), characterized in that, include: The first support plate (1) is provided with a horizontal adjustment slider; the second support plate (2) is slidably connected to the first support plate (1) through the aforementioned horizontal adjustment slider; The lifting frame (4) is vertically mounted on the second support plate (2) and its height is adjusted by a vertical adjustment slider; The clamping plate (3) is linearly slidably connected to the lifting frame (4) and its horizontal displacement is driven by the adjusting screw; the adjusting screw is rotatably connected to the lifting frame (4) and threadedly engaged with the clamping plate (3); the first support plate (1), the second support plate (2), the lifting frame (4) and the clamping plate (3) are all made of magnetic resonance compatible non-metallic materials.

2. The support device according to claim 1, characterized in that, The horizontal adjustment module includes: a pair of translation worm gears rotatably connected to the first support plate (1); a translation worm wheel meshing with the translation worm gears and rotatably connected to the first support plate (1); and a translation screw fixedly connected to the translation worm wheel on the same axis and threadedly engaged with the slider of the second support plate (2); wherein rotating the translation worm gears can drive the translation screw to rotate, thereby causing the second support plate (2) to move horizontally along the first support plate (1).

3. The support device according to claim 2, characterized in that, The vertical adjustment module includes: a drive shaft (401) rotatably connected to the second support plate (2); a pair of first bevel gears (402) fixedly mounted on the drive shaft (401); a second bevel gear meshing with the first bevel gears (402) and fixedly connected to the first worm (403); a first worm wheel meshing with the first worm (403) and coaxially fixedly connected to the second worm (404); and a second worm wheel meshing with the second worm (404) and connected to the lifting mechanism; the lifting mechanism is used to drive the lifting frame (4) to vertically lift.

4. The support device according to claim 3, characterized in that, The lifting mechanism includes: a connecting rod (405), one end of which is fixedly connected to the second worm gear; a sliding groove, which is disposed on the lifting frame (4); and a sliding column, which is fixedly disposed on the other end of the connecting rod (405) and slides in cooperation with the sliding groove; wherein, when the second worm gear rotates, the lifting frame (4) is driven to move vertically through the cooperation between the connecting rod (405) and the sliding groove.

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