Laser Alignment Marker for C-Arm X-Ray Positioning
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Solution Overview
Problem
C-arm X-ray machine operators in surgical operating rooms face challenges in accurately aligning the X-ray beam without a direct line of sight, leading to increased radiation exposure and errors due to the lack of precise alignment markers.
Innovation Solution
A marker and signal device is positioned on the patient, equipped with sensors to detect the C-arm X-ray machine's targeting laser and emit visible signals indicating proximity and precise alignment, allowing operators to adjust the beam without direct line of sight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the C-arm X-ray machine operator relies on line of sight to align the X-ray beam, then alignment accuracy is improved, but operational flexibility and safety are worsened due to radiation exposure risks
Solution Approach 1:
The patent introduces a laser alignment system as an intermediary tool between the operator and the patient. The laser provides a visible guidance beam that allows the operator to align the X-ray apparatus accurately without needing direct line of sight to the target area, thereby reducing radiation exposure while maintaining alignment precision
Solution Approach 2:
The patent replaces the mechanical/visual line-of-sight alignment method with an optical laser guidance system. The laser beam serves as a remote indication tool that transmits alignment information without requiring the operator to be in direct visual contact with the target area, substituting physical presence with optical signaling
2Measurement precision
If the operator takes multiple X-ray shots to find correct alignment, then alignment accuracy is improved, but fluoroscopy time and radiation exposure increase
Solution Approach 1:
The patent implements preliminary alignment using a laser guidance system before taking X-ray shots. The laser is positioned and adjusted to indicate the correct alignment path in advance, allowing the operator to verify proper positioning before exposing the patient to radiation, thereby reducing the number of corrective shots needed
Solution Approach 2:
The patent employs the laser as a real-time feedback mechanism that continuously indicates whether the X-ray apparatus is properly aligned with the target area. The visible laser beam provides immediate visual feedback to the operator, enabling quick adjustments without needing to take multiple test X-ray shots
3Object-affected harmful factors
If the operator adjusts the C-arm without direct line of sight, then operational safety is improved, but alignment accuracy deteriorates due to increased error
Solution Approach 1:
The laser alignment system serves as an intermediary that bridges the gap between the operator and the target area when direct line of sight is blocked. The laser beam projects the alignment path visually, allowing the operator to make accurate adjustments remotely without compromising precision despite lacking direct visual contact with the patient's anatomy
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances accuracy, reduces the number of X-ray shots and corrections, and minimizes radiation exposure by providing clear visual cues for precise alignment, thereby improving operational safety and reducing fluoroscopy time.
Implementation Method 1
a marker and signal device for positioning a laser
Implementation Method 2
at least one sensor operable to selectively sense when the laser is pointed on the marker
Implementation Method 3
a signal emitter operably coupled with the marker and configured to emit an observable signal
Data Source
AI summary
The present invention relates to the positioning of a laser emitted by a medical device, such as a C-arm X-ray machine. A marker is, in use, positioned on a patient's body, and includes at least one sensor that senses the presence of the laser. A signal emitter is operably coupled to the marker and emits an observable signal, such as a colored light, when the at least one sensor is struck by the laser.