Multi-C-Arm Gantry for Large-Angle Rotational Motion
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Solution Overview
Problem
Current medical imaging devices, such as angiographic machines, face limitations in achieving large-angle and high-speed rotational motion of the imaging chain, which restricts their ability to satisfy complex clinical application requirements.
Innovation Solution
The design incorporates a gantry system with multiple C-arms and supporting arms that allow for rotational and translational motion, featuring a base, C-arms, and supporting arms with specific curvature and length relationships, enabling greater rotational angles and speeds, and includes suspension and floor gantry configurations with guide rails and cranes for enhanced mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single C-arm structure is used in conventional angiographic machines, then the device structure is simple and cost-effective, but the imaging chain cannot achieve large-angle and high-speed rotational motion required by complex clinical applications
Solution Approach 1:
The imaging chain is divided into multiple independent C-arms (first C-arm, second C-arm, third C-arm) that can rotate and position independently. Each C-arm can be controlled to achieve different imaging angles, allowing the system to cover a wider range of motion requirements without requiring a single complex rotating mechanism
Solution Approach 2:
The C-arms are arranged in a nested configuration where the first C-arm, second C-arm, and third C-arm are positioned concentrically around the patient table. This nested arrangement allows multiple imaging chains to occupy overlapping spatial volumes, maximizing the use of available space while enabling complex multi-angle imaging capabilities
2Speed
If multiple C-arms with arc-shaped supporting arms are used to enable large-angle rotation, then the rotational range and speed are improved, but the structural complexity and mounting difficulty increase
Solution Approach 1:
The supporting arms are designed with arc-shaped structures that match the curvature of the C-arms they support. The first supporting arm, second supporting arm, and third supporting arm all feature arc geometries that enable smooth rotational motion of the attached C-arms, facilitating large-angle and high-speed rotation while maintaining structural integrity
Solution Approach 2:
The gantry system integrates multiple supporting arms (first, second, third) that serve dual functions: providing structural support for the C-arms and enabling rotational motion. These supporting arms are configured to rotate around different axes, allowing the system to achieve complex imaging angles through coordinated rotation of multiple components
3Ease of operation
If a suspension gantry configuration with crane and guide rail is used, then the mobility and positioning flexibility are enhanced, but the mounting complexity and cost increase
Solution Approach 1:
The gantry is designed as a dynamic suspension system where the base can be positioned at different locations along the guide rail using the crane mechanism. This dynamic positioning capability allows the imaging chain to be moved to various positions around the patient table, enhancing operational flexibility and ease of use for different clinical procedures
Data Source
AI summary
The present disclosure discloses a medical imaging device including a gantry and a first C-arm having an imaging chain. The gantry includes a first supporting arm connecting the first C-arm, a base, a second C-arm connecting the base, and a second supporting arm connecting the second C-arm. The first C-arm may be moveable along the first supporting arm and the second supporting arm may be movable along the second C-arm.