Surgical Camera Magnification Scaling by Tool-Tissue Distance
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Solution Overview
Problem
Current surgical imaging systems are limited in recognizing and conveying concealed structures, physical contours, and dimensions within a three-dimensional space, which hinders the decision-making process for clinicians and robotic system control during surgeries.
Innovation Solution
A surgical visualization system that includes a camera and control circuit to determine the distance between a surgical tool and tissue, adjusting magnification and field of view, and selecting between gross and fine motion modes based on this distance, enhancing the visualization of critical structures and improving robotic surgical system control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed magnification is used in surgical imaging systems, then the system structure remains simple, but the ability to recognize concealed structures and convey spatial information is limited
Solution Approach 1:
The patent implements dynamic magnification adjustment based on the distance between the surgical tool and tissue. The control circuit continuously monitors tool-tissue distance and automatically adjusts camera magnification in real-time, transforming the imaging system from a static fixed-magnification system to a dynamic adaptive system that optimizes visualization based on surgical context
Solution Approach 2:
The system employs feedback control by monitoring the distance between the surgical tool and tissue and using this information to adjust magnification. The control circuit receives distance measurements and automatically modifies camera settings to maintain optimal visualization, creating a closed-loop control system that responds to changing surgical conditions
2Adaptability or versatility
If a single field of view is maintained, then the imaging system remains simple, but the system cannot adapt to different surgical stages requiring both gross navigation and fine detail visualization
Solution Approach 1:
The system dynamically adjusts the field of view based on surgical needs. When the tool is far from tissue, a wider field of view is provided for gross navigation; when the tool approaches tissue, the field of view automatically narrows to provide magnified views for fine detail work, allowing the system to adapt to different surgical stages
Solution Approach 2:
The patent changes imaging parameters (magnification and field of view) based on tool-tissue distance. The control circuit adjusts these parameters automatically as the surgical tool moves through different distances from the tissue, enabling the system to provide appropriate visualization for both navigation and detailed surgical operations
Data Source
AI summary
A surgical visualization system for use with a robotic surgical system that includes a surgical tool movable with respect to a tissue of a patient in response to an instrument motion control signal is disclosed. The surgical visualization system includes a camera and a control circuit coupled to the camera. The control circuit is configured to determine a distance between the surgical tool and the tissue and adjust a magnification of the camera based on the distance between the surgical tool and the tissue.