Telescopic Actuator X-Ray Detector for C-Arm Envelope Control
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Solution Overview
Problem
Existing x-ray imaging devices face challenges in achieving fine control and increased working envelop while minimizing their footprint, which is crucial for fluoroscopy procedures requiring precise image articulation.
Innovation Solution
The implementation of a telescopic actuator within an x-ray detector assembly and an x-ray source assembly attached to a C-arm structure, allowing the x-ray detector to move between retracted and extended positions, thereby increasing the device's working envelop without increasing its footprint, and maintaining the isocenter accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the x-ray detector assembly uses a fixed position relative to the C-arm, then the device structure is simple, but the working envelop is limited and image articulation precision is insufficient
Solution Approach 1:
The x-ray detector assembly is made movable relative to the C-arm through a telescopic actuator mechanism, transitioning from a fixed to a dynamic configuration. This allows the detector to be positioned at multiple locations along the C-arm, enabling precise image articulation while maintaining a relatively simple overall structure through controlled motion rather than complex multi-component assemblies.
2Adaptability or versatility
If the x-ray detector assembly is extended to increase working envelop, then the imaging coverage is improved, but the device footprint increases
Solution Approach 1:
The telescopic actuator mechanism allows the x-ray detector assembly to be nested within or closely integrated with the C-arm structure when retracted, minimizing the device footprint. When extended, the detector assembly moves outward along the C-arm's existing structural envelope, increasing working envelop without proportionally increasing the overall device footprint, as the motion occurs within or alongside the existing C-arm framework.
3Measurement precision
If the x-ray detector assembly is made movable to enhance image articulation, then the imaging precision is improved, but the device complexity and control difficulty increase
Solution Approach 1:
A single degree-of-freedom telescopic actuator is used to move the x-ray detector assembly along the C-arm, providing precise positional control with minimal complexity. This dynamic positioning system allows the detector to be accurately positioned at different locations to achieve fine image articulation control, while the simplicity of a single linear motion path keeps the control system manageable compared to multi-axis robotic systems.
Data Source
AI summary
Provided is an imaging device including a body, an x-ray detector assembly attached to the body, and an x-ray source assembly attached to the body. The x-ray detector assembly includes a telescopic actuator movable between a retracted position and an extended position, and an x-ray detector attached to the telescopic actuator.