Medical Device Spatial Relation Determination via Dual Registration
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Solution Overview
Problem
Current methods for determining the spatial relation of medical devices to objects, such as patients or other medical devices, are prone to errors, especially in contact-free image-based methods, which can be critical in medical scenarios like robotic surgical interventions, and anchoring devices for safety restricts flexibility.
Innovation Solution
Implementing a dual registration method using different physical principles, such as image-based and haptic methods, to redundantly determine the spatial relation, with evaluation for conformance to ensure accuracy and safety, and signaling faulty registrations to prevent potential harm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a contact-free image-based registration method is used to determine the spatial relation of a medical device to an object, then the flexibility of device positioning is improved, but the reliability of the spatial relation determination deteriorates due to potential errors
Solution Approach 1:
The patent applies local quality by using different physical principles for registration in different spatial dimensions or measurement domains. Specifically, it combines image-based registration (optical domain) with electromagnetic field-based registration (electromagnetic domain), allowing each method to contribute its strengths to specific aspects of spatial relation determination, thereby improving overall reliability while maintaining positioning flexibility
Solution Approach 2:
The patent employs a composite approach by integrating multiple registration methods with different physical principles into a unified system. The spatial relation determination uses a composite of image data and electromagnetic field data, creating a more robust and reliable registration system that leverages the advantages of both methods while compensating for their individual weaknesses
2Reliability
If the medical device is firmly anchored to achieve first-fault safety, then the reliability of spatial relation is improved, but the adaptability of device positioning deteriorates to an extreme degree
Solution Approach 1:
The patent replaces the mechanical anchoring system with a field-based registration system. Instead of physically anchoring the device to ensure spatial relation accuracy, the system uses electromagnetic fields and image-based methods to continuously determine and verify the spatial relation, thereby maintaining first-fault safety without sacrificing positioning flexibility
Solution Approach 2:
The patent introduces an intermediary evaluation mechanism that compares results from multiple registration methods. This intermediary system acts as a virtual anchor, providing reliability through cross-validation of spatial relation data without requiring physical anchoring, thus preserving device mobility and positioning adaptability
Data Source
AI summary
The present embodiments relate to a method for determining a unique spatial relation of a medical device to an object. The medical device includes a registration mechanism with a first determination of the spatial relation of the medical device to the object by the registration mechanism by a first method for determining a relation of this kind, and with a second determination of the spatial relation of the medical device to the object by the registration mechanism by a second method for determining a relation of this kind. The second method is based on a physical principle of action different from that of the first method, with an evaluation of the results of the first and second determinations with respect to conformance by the registration mechanism, and, on the determination of a prespecified degree of conformance between the results, with a final determination of the spatial relation from the results of the first and second determinations by the registration mechanism to increase the safety of the medical device during operation in spatial interaction with a object.