Surgical Camera Laser Alignment for Unobstructed Optical Tracking
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Solution Overview
Problem
Current optical tracking systems in computer-assisted surgery often face line-of-sight obstructions, leading to inaccurate tracking and potential interruptions during procedures, as they rely on user guesses for camera positioning without precise measurement tools.
Innovation Solution
A system that uses a camera, a user interface, and a robotic surgical device to determine and maintain an optimal camera position within a surgical field by defining a target volume based on precise location information, ensuring unobstructed line of sight through real-time feedback and adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera is positioned based on user guesses without precise measuring tools, then the setup process is simple and quick, but the tracking accuracy deteriorates due to line-of-sight obstructions
Solution Approach 1:
A laser device is introduced as an intermediary tool to project a visible line of sight from the camera to the tracker. This allows users to precisely align the camera without complex measuring equipment, resolving the contradiction by providing accurate positioning through a simple visual guide
Solution Approach 2:
The patent replaces complex mechanical measuring tools with an optical system (laser + camera). The laser projects a visual reference that substitutes for traditional measuring instruments, achieving precise camera positioning through optical means rather than mechanical measurement
2Reliability
If the camera position is fixed before the procedure, then the setup time is reduced, but the reliability deteriorates when line of sight becomes blocked during surgery
Solution Approach 1:
The laser is used during setup to pre-determine the optimal camera position by visualizing the line of sight to the tracker. This preliminary alignment ensures reliable tracking from the start, preventing future obstructions and eliminating the need for time-consuming repositioning during surgery
Solution Approach 2:
The system provides visual feedback through the laser projection, allowing users to see exactly where the camera is pointing and adjust accordingly. This immediate feedback ensures the camera is correctly positioned before the procedure begins, maintaining reliable tracking throughout surgery without interruptions
3Productivity
If the camera is moved during surgery to maintain line of sight, then the tracking accuracy is maintained, but the surgical efficiency deteriorates due to procedure interruptions
Solution Approach 1:
The optimal camera position is determined in advance using the laser visualization tool, accounting for potential obstructions during surgery. By pre-positioning the camera correctly, the system maintains tracking precision throughout the entire procedure without requiring movements that would interrupt surgery and reduce efficiency
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 approach enhances the accuracy and reliability of object tracking, reduces the need for camera repositioning during surgery, and increases surgical efficiency and surgeon satisfaction.
Implementation Method 1
output a second set of instructions for display on the graphical user interface to align a laser of the camera to the tracker by changing an angle of the camera
Data Source
AI summary
A system and method may be used to position or orient a camera within a surgical field. A method may include generating a graphical user interface including a first set of instructions to reposition the camera, and determining whether the camera is within a target volume location. The method may include automatically outputting an indication when the camera is within the target volume location. The method may include outputting a second set of instructions for display on the graphical user interface to align a laser, coupled to or integrated into the camera, to the tracker by changing an angle of the camera.