Dual Registration Plane Method for Image-Guided Surgery
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Solution Overview
Problem
Conventional image-guided surgery (IGS) systems often rely on single registration planes, which can lead to inaccuracies during procedures performed on the lateral side of the head, such as otology and neurotology procedures, where enhanced registration accuracy is necessary for precise instrument positioning.
Innovation Solution
The implementation of a dual registration plane method using a registration probe to capture position data along both the anterior and lateral regions of the head, including exposure of bone surfaces to ensure accurate correlation with preoperative images, thereby enhancing the registration process and instrument tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single registration plane is used in IGS systems, then the device complexity is reduced and the registration process is simpler, but the measurement precision and reliability of instrument positioning deteriorate during lateral head procedures
Solution Approach 1:
The patent applies segmentation by dividing the registration process into multiple distinct registration planes (e.g., first registration plane and second registration plane) rather than using a single plane. Each plane captures position data from different anatomical regions, allowing the system to accumulate more comprehensive spatial information for improved positioning accuracy while maintaining manageable complexity through structured segmentation of the registration workflow
2Measurement precision
If multiple registration planes are implemented to improve lateral head procedure accuracy, then the measurement precision improves, but the time required for the registration process increases
Solution Approach 1:
The patent implements preliminary action by performing registration at multiple planes before the actual surgical procedure begins. The system captures position data along first and second registration planes during the preoperative or immediate pre-procedure phase, establishing an accurate three-dimensional map in advance. This allows the time-consuming multi-plane registration to be completed beforehand, ensuring high precision during the procedure without delaying the actual surgery
3Reliability
If a registration probe is used to capture position data along multiple registration planes, then the reliability of patient-anatomy correlation is improved, but the ease of operation is reduced due to the complexity of positioning the probe along multiple planes
Solution Approach 1:
The patent employs feedback mechanisms where the IGS system provides real-time position data and visual feedback to the operator as the registration probe is positioned along different registration planes. The system processes the position data from the probe and correlates it with preoperative images, providing feedback that confirms accurate placement and guides the operator through the multi-plane registration process, thereby maintaining ease of operation while ensuring high reliability of the anatomy correlation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides improved accuracy and reliability in registering patient anatomy with preoperative images, allowing for precise real-time positioning of surgical instruments during procedures, even when direct visualization is limited.
Implementation Method 1
signals from a position sensor of a registration probe, each of the signals indicating a corresponding real-time position of the position sensor in three-dimensional space
Data Source
AI summary
Position data is captured for a first plurality of registration points along an anterior region of a head of a patient, based on a signal from a position sensor of a registration probe as the registration probe is positioned at each registration point of the first plurality of registration points. Each of the signals from the position sensor indicating a corresponding real-time position of the position sensor in three-dimensional space. Position data is captured for a second plurality of registration points along a lateral region of a head of a patient, based on a signal from a position sensor of a registration probe as the registration probe is positioned at each registration point of the second plurality of registration points. A real-time position of the patient is registered with an image guided surgery system, based on at least the captured position data for the first and second captured registration points.