Active Implantable Medical Device MRI Mode Automation
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Solution Overview
Problem
Existing MRI scanning workflows for active implantable medical devices (AIMDs) require manual programming into and out of MRI mode, leading to human error and inefficiencies, which can compromise patient safety and therapy effectiveness.
Innovation Solution
An active implantable medical device equipped with a magnetic field detecting sensor and processors that automatically detect the MRI scanner's magnetic field, determining its location and activating/deactivating the MRI mode accordingly, thereby eliminating the need for manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual programming of AIMD into and out of MRI mode is performed, then device compatibility with MRI scanning is achieved, but human error and workflow inefficiency occur
Solution Approach 1:
The AIMD automatically detects the MRI scanner's magnetic field characteristics and autonomously switches to MRI mode without requiring manual programming by clinicians. The device monitors magnetic field strength and gradient characteristics, and when MRI conditions are detected, it automatically reconfigures its operating parameters, thereby eliminating human error and streamlining the workflow.
Solution Approach 2:
The system continuously monitors the magnetic field environment around the AIMD and uses this feedback to determine when to activate or deactivate MRI mode. By detecting changes in magnetic field strength and characteristics, the device automatically adjusts its operation in response to the MRI scanning environment, ensuring safe operation without manual intervention.
2Reliability
If manual programming of AIMD out of MRI mode is delayed, then patient safety is compromised, but automatic detection requires additional sensors and processing
Solution Approach 1:
The AIMD continuously monitors the magnetic field environment using existing sensors and automatically determines when to exit MRI mode based on detected field characteristics. When the magnetic field strength and gradient characteristics no longer match MRI scanner profiles, the device autonomously reverts to normal operating mode, eliminating delays and ensuring patient safety without requiring complex additional hardware.
3Ease of operation
If automatic MRI mode detection is implemented, then manual intervention is eliminated, but device complexity increases
Solution Approach 1:
The AIMD utilizes its existing magnetic field sensors to continuously monitor the electromagnetic environment and automatically distinguish between MRI scanner fields and other magnetic sources. By analyzing the strength, gradient, and temporal characteristics of detected magnetic fields, the device can reliably identify MRI conditions and trigger appropriate mode changes without adding substantial hardware complexity.
Solution Approach 2:
The automatic detection system leverages the existing magnetic field sensing capabilities of the AIMD, which are already present for other operational functions. By repurposing these existing sensors for MRI detection, the system achieves automatic mode recognition without requiring dedicated additional sensors, thereby minimizing the increase in device complexity.
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 solution reduces human error, streamlines the MRI scanning process, and ensures optimal patient safety by automatically managing the AIMD's operation in response to the MRI environment, minimizing delays and maintaining therapy effectiveness.
Implementation Method 1
a magnetic field detecting sensor configured to detect characteristics of interest of a magnetic field of a magnetic resonance imaging (MRI) scanner
Data Source
AI summary
A method for automatically operating an active implantable medical device (AIMD) is provided. Under control of one or more processors, the method includes placing the AIMD in an MRI trigger mode, detecting a magnetic field of a magnetic resonance imaging (MRI) device in response to placing the AIMD in the MRI trigger mode, and communicating with a magnetic field detecting sensor to obtain characteristics of interest of the magnetic field. The method also includes determining a location of the AIMD in relation to the MRI scanner based on the characteristics of interest of the magnetic field, automatically activating an MRI mode of the AIMD, automatically deactivating the MRI mode, and maintaining the MRI trigger mode after the MRI mode is automatically deactivated.