Transcutaneous Power Transfer for Load-Adaptive Implants
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Solution Overview
Problem
Existing medical devices, such as cochlear implants, face challenges in efficiently managing power transfer and load variations, leading to inefficiencies and potential damage due to fluctuating power demands.
Innovation Solution
A system that dynamically varies power output to implanted devices based on load conditions using digital binary control, allowing for precise power management through transcutaneous power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous maximum power output is provided to the implanted device, then the device receives sufficient power to meet peak load demands, but energy is wasted during low-load periods and battery life is reduced
Solution Approach 1:
The external component dynamically adjusts power output in periodic cycles, alternating between maximum power output during high-load periods and reduced or zero power output during low-load periods. This periodic modulation of power delivery ensures the implanted device receives sufficient power when needed while minimizing energy waste during low-demand intervals, thereby extending battery life without compromising operational reliability
Solution Approach 2:
The system transitions from static continuous power delivery to dynamic adaptive power delivery. The external component continuously monitors load conditions and adjusts power output in real-time, varying between maximum and minimum levels based on actual device needs. This dynamic approach optimizes the balance between ensuring sufficient power supply and minimizing energy consumption
2Loss of energy
If power output is dynamically varied in response to load changes, then power efficiency is enhanced and battery life is extended, but system complexity increases due to control mechanisms
Solution Approach 1:
The system implements a feedback control mechanism where the external component monitors load conditions from the implanted device and adjusts power output accordingly. The control circuit receives load information, processes it through a microcontroller or logic circuit, and modulates the power delivery in response. This feedback loop enables automatic adaptation to varying power demands while maintaining relatively simple hardware architecture
Solution Approach 2:
The control system operates autonomously, with the external component automatically detecting load changes and adjusting power output without requiring manual intervention or complex user programming. The system self-regulates based on real-time conditions, simplifying the user interface while maintaining sophisticated power management capabilities through automated decision-making algorithms
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
Enhances power efficiency and reduces stress on the device by adapting power levels in response to load changes, ensuring stable operation and extending battery life.
Implementation Method 1
a radio-frequency inductance coil connected to the housing or supported in the housing, the radio-frequency inductance coil configured to provide power to an implanted device
Data Source
AI summary
A device including an external component of a prosthesis configured to provide power to an implanted device implanted in a human, wherein the external component is configured so that a level of power output to the implanted device is dynamically varied, based on data based on data that is based on a load of the implanted device, in a digital binary manner.