Intraoperative Reference Model Adaptation for Surgical Navigation
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Solution Overview
Problem
Existing surgical navigation systems require preoperative imaging, which can be complex and inflexible, limiting their ability to adapt to intraoperative conditions and individual patient or surgeon-specific variations.
Innovation Solution
A method and system that individualizes a generic reference model using intraoperative state data, adapting landmarks in real-time to match current surgical conditions, allowing for patient-specific, surgeon-specific, and equipment-specific adjustments, using sensors and algorithms to dynamically update the model during operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If presurgical images are used to guide the operation, then navigation accuracy is improved, but preoperative complexity and time consumption increase
Solution Approach 1:
The system performs preliminary actions by capturing images during the operation itself rather than requiring extensive preoperative imaging. The surgical microscope captures images at the actual time of surgery, eliminating the need for complex presurgical MRI or CT scans while maintaining navigation accuracy through real-time anatomical visualization.
Solution Approach 2:
The invention extracts the navigation function from the preoperative imaging process and relocates it to the intraoperative phase. By using the surgical microscope to capture and process images during surgery, the system separates the navigation task from the preoperative preparation, reducing preoperative complexity while preserving navigational guidance capabilities.
2Measurement precision
If presurgical images are used for navigation, then landmark identification is improved, but flexibility and adaptability to intraoperative conditions deteriorate
Solution Approach 1:
The system transitions from static preoperative images to dynamic intraoperative imaging. The surgical microscope continuously captures images during surgery, allowing the navigation system to adapt to real-time anatomical variations, tissue movement, and surgical manipulations that cannot be captured in presurgical imaging.
Solution Approach 2:
The invention implements feedback by using intraoperatively captured images to continuously update and refine landmark identification. The system processes images taken during surgery and uses this real-time information to adjust navigation guidance, ensuring accuracy despite changes in tissue position or appearance that occur during the procedure.
3Ease of manufacture
If a generic reference model is used for all operations, then standardization is improved, but individualization to patient-specific and surgeon-specific variations deteriorates
Solution Approach 1:
The system applies local quality by customizing the reference model for each specific operation based on intraoperative images. Instead of using a single generic model for all cases, the system captures patient-specific anatomical features, surgeon-specific preferences, and equipment-specific configurations during each surgery to create a tailored reference model that maintains standardization benefits while achieving individualization.
Solution Approach 2:
The invention performs preliminary customization of the reference model during the operation itself. By capturing images and data intraoperatively, the system prepares patient-specific and surgeon-specific reference models in advance of their actual use, enabling both standardization and individualization without requiring extensive preoperative planning for each case.
Data Source
AI summary
A generic reference model for a planned operation defines a multiplicity of landmarks that describe the planned operation. State data that describe a specific operation are received, for example by a surgical microscope, while performing a specific operation on the basis of the planned operation. Then the generic reference model is individualized in relation to the specific operation on the basis of the state data by virtue of adapting one or more landmarks of the multiplicity of landmarks to the specific operation.