C-arm Imaging System Sliding Support for Wide-Angle Rotation
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Solution Overview
Problem
C-arm imaging systems have limited rotation angles due to the positioning of the X-ray tube assembly, restricting their ability to achieve certain specific positions or angles for imaging.
Innovation Solution
The C-arm imaging system is designed to slide at an angle of at least 90 degrees relative to the sliding support assembly, allowing for bidirectional 90-degree rotation and enabling positioning and shooting at various angles by extending the C-arm's arc length and modifying the sliding support assembly's structure to accommodate the X-ray tube and detector assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the X-ray tube assembly is mounted at the end portion of the C-arm, then the structure is compact and simple, but the rotation angle is limited and cannot achieve certain specific positions or angles
Solution Approach 1:
The C-arm is designed with dynamic sliding capability relative to the sliding support assembly, transitioning from a static fixed-position structure to a dynamic adjustable structure. The C-arm can slide along the arc-shaped sliding track to achieve rotation angles of at least 90 degrees, resolving the contradiction between structural simplicity and rotation angle range by introducing controlled mobility to the previously fixed mounting structure
Solution Approach 2:
The solution adds a sliding dimension to the traditional rotation mechanism. Instead of relying solely on rotational movement at a fixed pivot point, the C-arm incorporates linear sliding motion along an arc-shaped track, transforming a single-degree-of-freedom rotational system into a two-degree-of-freedom system with both sliding and rotational capabilities, thereby expanding the achievable rotation angle while maintaining structural compactness
2Volume of moving object
If the C-arm rotation angle is limited, then the structure remains compact, but positioning and shooting at certain specific positions or angles cannot be achieved
Solution Approach 1:
The C-arm assembly is designed with dynamic sliding capability along the arc-shaped track, allowing the system to expand its operational range when needed while maintaining a compact form factor when retracted. This dynamic adjustment mechanism enables the C-arm to achieve rotation angles of at least 90 degrees, providing access to specific positioning angles (such as lateral and oblique views) that would be inaccessible with a limited rotation mechanism, thus resolving the contradiction between compactness and positioning capability
3Adaptability or versatility
If the sliding support assembly structure is modified to accommodate the C-arm sliding mechanism, then the range of motion is enhanced, but the device complexity increases
Solution Approach 1:
The sliding support assembly is segmented into distinct functional components: the base structure, the sliding track mechanism, and the C-arm mounting interface. This segmentation allows each component to be optimized independently for its specific function while maintaining overall system compactness. The arc-shaped sliding track is separated as a distinct element that guides the C-arm's motion, enabling enhanced range of motion without requiring a complete redesign of the entire support assembly
Solution Approach 2:
The sliding support assembly is designed with multi-functionality to justify the increased structural complexity. The same sliding mechanism serves multiple purposes: it enables the C-arm to achieve rotation angles of at least 90 degrees, provides stable support during imaging procedures, and maintains a compact form factor when not in use. This multi-functionality ensures that the added structural complexity delivers proportional benefits in terms of adaptability and versatility
Data Source
AI summary
A C-arm imaging system includes a C-arm, and a sliding support assembly. The C-arm includes a first end portion and a second end portion which are oppositely disposed. The first end portion is used to connect to the X-ray tube assembly, while the second end portion is used to connect to the detector assembly, and the X-ray tube assembly and the detector assembly are aligned. The sliding support assembly is connected to the C-arm, and the C-arm can slide relative to the sliding support assembly, wherein the C-arm rotates at a rotational angle of not less than 90 degrees relative to the sliding support assembly from a first position to the first end portion or the second end portion, the first position being a position where the line connecting the center of the detector assembly and the center of the X-ray tube assembly is in a vertical direction.