Endoscope Navigation with Real-Time Anatomy Model Updates
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Solution Overview
Problem
Existing endoscope navigation systems face challenges in accurately positioning the endoscope due to variable patient anatomy and inaccuracies in pre-procedure anatomy models, which can lead to prolonged procedures and increased risk of complications.
Innovation Solution
An endoscope navigation system that includes a steerable distal tip with a camera and position sensor, a graphics controller that updates a patient anatomy model in real-time based on image and position data, and a display for showing the updated model to assist in precise navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pre-procedure anatomy model is created using CT or MRI images, then navigation guidance can be provided, but the model may diverge from actual patient anatomy due to condition changes or inaccuracies
Solution Approach 1:
A pre-procedure anatomy model is created using CT or MRI images to establish initial navigation guidance before the procedure begins, allowing planners to prepare navigation paths in advance based on pre-acquired imaging data
Solution Approach 2:
The system continuously compares live endoscope images with the pre-procedure anatomy model to identify divergences, then updates the model in real-time based on actual observed anatomy, creating a feedback loop that maintains model accuracy throughout the procedure
2Measurement precision
If real-time image processing is performed to update the anatomy model, then navigation accuracy improves, but computational complexity and processing time increase
Solution Approach 1:
The system processes and updates only the specific portions of the anatomy model that are currently being navigated through or are near the endoscope position, rather than processing the entire model, reducing computational burden while maintaining accuracy where needed
Solution Approach 2:
The anatomy model is divided into discrete segments or regions that can be independently updated based on local image data, allowing selective processing of only those portions requiring updates rather than regenerating the entire model
Data Source
AI summary
An endoscope navigation system is provided that updates an anatomy model based on a live camera signal. As the endoscope advances within the patient, a camera signal, and corresponding position signal, of the endoscope, is provided and used to update the anatomy model based on identified divergences between the camera signal at a particular position and anatomy model.