Floating Magnetic Elements in Medical Implants for MRI Alignment
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Solution Overview
Problem
Magnetic materials in medical implants can depolarize or repolarize due to strong magnetic fields like those in MRI scanners, leading to undesirable forces and potential loss of functionality.
Innovation Solution
Incorporating 'floating' magnetic elements that can rotate freely within housings to align with external magnetic fields, allowing them to reorient and resume functionality after the field is removed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic elements are fixed in position within the implant, then the implant maintains stable magnetic function for its medical purpose, but the magnetic elements cannot align with external MRI magnetic fields, causing depolarization or repolarization and loss of functionality
Solution Approach 1:
The magnetic elements are designed to be rotatable within their housings rather than fixed, allowing them to dynamically adjust their orientation. Each housing contains a magnetic element that can rotate freely on a pivot point, enabling the magnetic element to align with external magnetic fields during MRI scans while maintaining functional positioning when no external field is present
2Adaptability or versatility
If magnetic elements are allowed to rotate freely to align with external magnetic fields, then the implant maintains functionality during MRI scans, but the rotating magnetic elements may create undesirable forces and stress on the implant and surrounding tissues
Solution Approach 1:
The implant is divided into multiple independent housings, each containing its own magnetic element that can rotate independently. This segmentation isolates the rotational movement to individual components rather than the entire implant structure, reducing the transmission of mechanical stress and forces to the surrounding tissues while still allowing each magnetic element to align with external fields
3Quantity of substance
If multiple magnetic elements are used within a single housing, then the magnetic function is enhanced, but the complexity of ensuring all elements can freely rotate and align increases
Solution Approach 1:
Multiple magnetic elements are combined within a single housing structure, sharing common rotational mechanisms and support structures. This merging approach allows multiple magnetic elements to rotate freely together while reducing the overall complexity compared to having separate housings for each element, as they share the housing walls, pivot points, and rotational freedom
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
Prevents loss of functionality in medical implants during MRI scans and ensures they can resume their intended medical function post-scan.
Implementation Method 1
the magnetic elements within the medical implant are allowed to rotate freely to align with an external magnetic field, such as the magnetic field created by an MRI scanner
Data Source
AI summary
Systems and methods are described for the use of floating magnetic elements in medical implants. The magnetic elements within the medical implant are allowed to rotate freely to align with a strong external magnetic field, such as that of an MRI scanner, and align to attract each other during the normal functioning of the medical implant in the absence of a strong external magnetic field.