Multi-Camera Surgical Retractor for Minimally Invasive Visualization
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Solution Overview
Problem
Minimally invasive surgical procedures face challenges with limited visualization and workspace due to small incisions, leading to restricted access and view of the surgical site, which existing visualization devices like endoscopes and operating microscopes cannot adequately address.
Innovation Solution
A surgical retractor equipped with inward-facing cameras and an image processing module that tracks and displays multiple camera views simultaneously, providing enhanced visualization by stitching or tiling images from proximal and distal locations, and optionally integrating tool-mounted cameras for comprehensive site visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If minimally invasive surgical techniques are used with small incisions, then patient recovery time and pain are reduced, but the surgeon's visualization and workspace at the surgical site are limited
Solution Approach 1:
The surgical system is divided into multiple independent camera units positioned at different locations (proximal and distal) within the surgical site. Each camera captures a specific view, and the images are processed separately before being combined into a composite display, allowing comprehensive visualization through small incisions
Solution Approach 2:
The system transitions from a single 2D endoscopic view to a multi-dimensional composite image that integrates perspectives from multiple cameras positioned at different depths and angles. This creates a comprehensive 3D-like visualization of the surgical site while maintaining minimally invasive access
2Loss of information
If endoscopes or operating microscopes are used for visualization, then the surgical site can be viewed, but the workspace remains restricted due to small incisions and the positioning requirements of these devices
Solution Approach 1:
The surgical retractor serves multiple functions: it provides mechanical retraction to maintain incision opening, positions multiple cameras to capture comprehensive views, and acts as a support structure for the visualization system. This multi-functionality eliminates the need for separate endoscopes or microscopes while improving both visualization and workspace access
Solution Approach 2:
The surgical retractor acts as an intermediary structure that bridges the gap between the external surgical instruments and the internal surgical site. It provides a stable platform for mounting cameras and positioning them optimally to view the surgical field without requiring large incisions or complex device positioning
3Loss of information
If multiple cameras are deployed at different locations, then comprehensive visualization of the surgical site is achieved, but the device complexity increases
Solution Approach 1:
Multiple camera views are merged into a single composite image displayed on one screen. The image processing module combines proximal and distal camera feeds with proper alignment and registration, providing comprehensive visualization while maintaining a simple user interface that requires no additional equipment
Data Source
AI summary
A surgical device includes a plurality of cameras integrated therein. The view of each of the plurality of cameras can be integrated together. A surgical tool that includes an integrated camera may be used in conjunction with the surgical device. The image produced by the camera integrated with the surgical tool may be associated with the images generated by the plurality of cameras integrated in the surgical device. The position and orientation of the cameras and/or the surgical tool can be tracked, and the surgical tool can be rendered as at least partially transparent. A surgical device may be powered by a hydraulic system, thereby reducing electromagnetic interference with tracking devices.