Implantable Device Power Management Circuit
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Solution Overview
Problem
Implantable medical devices face challenges in efficient power management due to limited and non-rechargeable power sources, leading to voltage variations and reduced device functionality, necessitating improved power management to extend device life and reduce electrical conditions.
Innovation Solution
Incorporating a power management circuit that controls current and voltage for the telemetry circuit through soft-start sequences and current-limiting devices, monitoring power supply conditions, and disconnecting the telemetry circuit when defined voltage conditions are met to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the telemetry circuit is continuously powered to maintain device functionality, then the device can perform monitoring and communication operations, but the power source lifespan is reduced due to continuous power consumption
Solution Approach 1:
The power management circuit implements periodic control of the telemetry circuit by connecting it to the power source only during defined time intervals when communication operations are needed, and disconnecting it during idle periods. This periodic activation pattern reduces overall power consumption while maintaining necessary device functionality for monitoring and communication.
Solution Approach 2:
The system dynamically adjusts the operational state of the telemetry circuit based on real-time communication needs. The power management circuit monitors whether communication operations are required and accordingly connects or disconnects the telemetry circuit, creating a dynamic power management approach that balances functionality with power conservation.
2Duration of action of stationary object
If the telemetry circuit is disconnected to conserve power, then power source lifespan is extended, but device functionality is reduced
Solution Approach 1:
The telemetry circuit is reconnected to the power source periodically when communication operations are required, ensuring that device functionality is restored on-demand. This periodic reconnection maintains the ability to perform monitoring and communication tasks while preserving power during idle intervals.
Solution Approach 2:
The power management circuit automatically manages the connection and disconnection of the telemetry circuit based on detected communication needs, eliminating the need for manual intervention. The system self-regulates power distribution to the telemetry circuit, connecting it when communication is required and disconnecting it for power conservation.
3Speed
If in-rush current is not limited during power connection, then the telemetry circuit can initialize quickly, but voltage droop and electrical conditions occur that reduce reliability
Solution Approach 1:
The power management circuit connects current-limiting devices to the telemetry circuit before full power connection occurs. This preliminary current limitation prevents excessive in-rush current from causing voltage droop and electrical instability, ensuring reliable power transition while still allowing relatively quick initialization of the telemetry circuit.
Data Source
AI summary
Techniques for facilitating improved power management for an implantable device are provided. In one example, an implantable device includes a telemetry circuit and a power management circuit. The telemetry circuit is configured to facilitate a telemetry session between the implantable device and an external device. The power management circuit is configured to connect a power supply to the telemetry circuit via a first current-limiting device based on a determination that the telemetry circuit satisfies a defined criterion. The power management circuit is also configured to connect the telemetry circuit to a second current-limiting device based on a determination that the telemetry circuit is connected to the first current-limiting device for a defined period of time.