Floor-Mounted C-Arm Rotary Arm Control
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Solution Overview
Problem
The existing X-ray diagnostic apparatuses with floor-mounted C-arms face limitations in operability due to restricted working space and subject distance, which hinders efficient radiography imaging, especially in procedures requiring extensive movement and positioning.
Innovation Solution
A method involving a floor-mounted rotary arm and a stand that allows the X-ray tube and detector to be linearly moved and rotated synchronously, maintaining image orientation through controlled axial rotation, enhancing the flexibility and coverage of the imaging system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the C-arm is mounted on a floor-mounted stand with limited rotation, then the apparatus structure is simple and stable, but the working space and subject distance are restricted
Solution Approach 1:
The floor-mounted stand is divided into multiple independent rotation sections: a first rotation section for rotating the C-arm about a first vertical axis, and a second rotation section for rotating the C-arm about a second vertical axis. This segmentation allows each section to contribute differently to the overall positioning capability, expanding working space while keeping each individual rotation mechanism relatively simple.
Solution Approach 2:
The C-arm is made dynamically adjustable through multiple rotation sections that can be independently controlled. The first rotation section rotates about a first vertical axis, and the second rotation section rotates about a second vertical axis, allowing the C-arm to adapt its position and orientation dynamically to provide wider working space and adjusted subject distance.
2Adaptability or versatility
If the C-arm rotation range is limited, then the apparatus is stable and easy to control, but the coverage across the patient's body is restricted
Solution Approach 1:
The rotation mechanism is segmented into a first rotation section (rotating about a first vertical axis) and a second rotation section (rotating about a second vertical axis). This segmentation enables the C-arm to achieve comprehensive coverage across the patient's body by combining rotations from both sections, while each section remains independently controllable.
Solution Approach 2:
The apparatus transitions from single-axis rotation to dual-vertical-axis rotation, adding another dimension of rotational freedom. The first rotation section provides rotation about a first vertical axis, and the second rotation section provides rotation about a second vertical axis, creating multi-dimensional positioning capability that expands body coverage.
3Productivity
If manual adjustments are required for positioning, then the apparatus structure is simple, but the efficiency of radiography imaging is reduced
Solution Approach 1:
The positioning mechanism is made dynamically adjustable through automated control of the first and second rotation sections. The first rotation section rotates the C-arm about a first vertical axis, and the second rotation section rotates it about a second vertical axis, allowing efficient automated positioning that improves imaging productivity while managing complexity through modular design.
Data Source
AI summary
A controller controls a floor-mounted rotary arm mounted at one end on a floor rotatably about a substantially vertical rotation axis, a stand supported at the other end of the floor-mounted rotary arm rotatably about a substantially vertical rotation axis, a substantially C-shaped arm supported by the stand, an X-ray tube supported at one end of the C-arm, and an X-ray detector supported at the other end of the C-arm rotatably about a shooting axis passing through the X-ray focus of the X-ray tube and the center of the detection surface. The controller includes the steps of moving the X-ray tube and the X-ray detector linearly by controlling the rotation of the floor-mounted rotary arm and the rotation of the stand, and maintaining the orientation of the image in a display screen by controlling the axial rotation of the X-ray detector in synchronization with the rotation of the floor-mounted rotary arm and the rotation of the stand.