Surgery Assistance System Real-Time Excised Surface Estimation
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Solution Overview
Problem
Conventional surgery assistance systems fail to provide real-time, accurate information about the excised surface during laparoscopic surgery, as they only display preoperative virtual images that do not adapt to changing surgical conditions.
Innovation Solution
A surgery assistance system that includes an endoscope, a display, a treatment tool with an end effector, and a processor to detect and record the distal end position of the end effector, estimate the excised surface, and present anatomical information related to the estimated treatment surface to the surgeon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a preoperative virtual image is displayed to support the surgeon, then the surgeon can visualize the target organ structure, but the displayed image does not reflect real-time changes in the excised surface during surgery
Solution Approach 1:
The system implements feedback by detecting the actual position of the end effector during surgery and using this information to update and correct the virtual image of the excised surface in real-time, ensuring the displayed information reflects the actual surgical progress
Solution Approach 2:
The system creates a virtual copy of the target organ based on preoperative imaging data and updates this virtual model in real-time to match the actual excised surface, allowing the surgeon to visualize accurate anatomical information without adding physical complexity to the surgical field
2Ease of operation
If the excised surface is displayed as preset before operation, then the system is simple to operate, but it does not provide necessary real-time information to the surgeon
Solution Approach 1:
The system transitions from a static preset virtual image to a dynamic virtual image that automatically updates based on real-time detection of end effector position, maintaining ease of operation while providing current anatomical information without requiring manual intervention
3Measurement precision
If real-time detection and estimation of excised surface is implemented, then accurate anatomical information is provided to the surgeon, but the system complexity increases
Solution Approach 1:
The system replaces complex mechanical measurement devices with sensor-based detection and computational estimation methods, using the instruction signal from the input device to infer end effector position and calculate the excised surface virtually, achieving high precision without adding mechanical complexity
Data Source
AI summary
A surgery assistance system includes: an endoscope; a display configured to display an image from the endoscope; a treatment tool that includes an end effector at a distal end; an input device that inputs an instruction to the end effector; and a processor connected to the endoscope, the display, the treatment tool, and the input device, wherein the processor is configured to detect a distal end position of the end effector based on the instruction, record the detected distal end position, and estimate a first treatment surface from a plurality of recorded distal end positions.