Implantable Medical Device Recharge Intervals for Easier Compliance
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Solution Overview
Problem
Implantable medical devices (IMDs) often have non-integer and irregular recharge intervals that are difficult for users to remember, leading to skipped charging sessions and ineffective therapy due to battery depletion.
Innovation Solution
A system determines and outputs suggested recharge intervals that align with regular time intervals, such as integer values and frequent charging schedules, facilitating easier compliance and reducing human error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the IMD uses precise battery depletion calculations to determine recharge intervals, then the accuracy of charge timing is improved, but the user compliance deteriorates due to non-integer and irregular intervals being difficult to remember
Solution Approach 1:
The system transforms the precise but complex recharge interval values into simplified, rounded values that are easier to remember and comply with. The processor calculates the actual recharge interval based on battery depletion rate and therapy parameters, then rounds it to a simpler value (e.g., from 16.5 days to 2 weeks) for user display and compliance purposes.
2Loss of information
If the IMD provides detailed battery status information, then the information completeness is improved, but the user cognitive burden increases making it harder to remember charging schedules
Solution Approach 1:
The system extracts only the essential information needed for user compliance from the complete battery status data. Instead of presenting all raw battery parameters and depletion rates, the processor derives and displays only the rounded recharge interval and charge status, filtering out unnecessary complexity while maintaining operational guidance.
3Adaptability or versatility
If the IMD allows flexible therapy programming, then the therapy adaptability is improved, but the recharge interval calculation complexity increases
Solution Approach 1:
The processor performs preliminary calculations of the recharge interval based on the therapy program parameters and battery characteristics before presenting the rounded value to the user. This advance computation allows the system to account for flexible therapy programming variations while maintaining a simple, rounded display value that doesn't require the user to understand the underlying complex calculations.
Data Source
AI summary
An example system includes processing circuitry configured to receive information of a therapy program for an implantable medical device. The information of the therapy program includes therapy parameters values and a therapy schedule defining delivery of therapy by the implantable medical device. The processing circuitry is configured to determine, based on the therapy parameter values and the therapy schedule of the therapy program, a recharge interval value for a power source of the implantable medical device. The processing circuitry is configured to determine, for the therapy program, a suggested recharge interval value from a plurality of predefined possible suggested recharge interval values corresponding to different respective ranges of possible values of the determined recharge interval value. The processing circuitry is configured to generate, for output to a user and for the therapy program, an indication of the suggested recharge interval value.