Medical Device Telemetry Advertising Intervals for Low-Latency Connectivity
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Solution Overview
Problem
Existing medical devices face challenges in optimizing energy consumption and responsiveness in communication between external and implanted devices, leading to potential latency and reduced device longevity.
Innovation Solution
A system that adjusts communication parameters, such as advertising intervals and session initiation, based on sensor information from external devices, using adaptive learning algorithms to minimize energy drain and improve responsiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the advertising interval is reduced to improve responsiveness and reduce connection latency, then the device can establish communication faster, but energy consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of the advertising interval based on detected user activity. The system transitions from a static advertising interval to a dynamic one that adapts to user state: shorter intervals when movement is detected (indicating user presence and potential need for communication) and longer intervals when no movement is detected (indicating user absence or sleep). This resolves the contradiction by making the advertising interval flexible rather than fixed, allowing optimization of both responsiveness and energy consumption under different conditions.
Solution Approach 2:
The patent changes the advertising interval parameter based on sensor input (accelerometer data). When user movement exceeds a threshold, the system switches to a first advertising interval (shorter, more responsive). When movement is below the threshold, it switches to a second advertising interval (longer, more energy-efficient). This parameter change strategy allows the system to adapt communication behavior to user needs, resolving the trade-off between connection latency and energy consumption.
2Duration of action of stationary object
If the advertising interval is increased to reduce energy drain, then battery longevity improves, but connection responsiveness deteriorates
Solution Approach 1:
The system dynamically adjusts the advertising interval based on real-time sensor data. When the accelerometer detects user movement, the system automatically switches to a shorter advertising interval to improve responsiveness. When no movement is detected, it extends the advertising interval to conserve energy and extend battery life. This dynamic behavior resolves the contradiction by adapting the advertising interval to actual user needs rather than using a fixed value.
Solution Approach 2:
The patent implements a feedback loop where the system continuously monitors accelerometer data and adjusts the advertising interval accordingly. The sensor input provides feedback about user activity state, which triggers appropriate changes in communication behavior. This feedback mechanism ensures that the advertising interval is optimized based on actual conditions, resolving the trade-off between longevity and responsiveness.
3Ease of operation
If continuous communication monitoring is implemented to improve responsiveness, then user experience improves, but energy consumption increases
Solution Approach 1:
The patent implements periodic monitoring of accelerometer data at defined intervals rather than continuous monitoring. The system checks for user movement at specific periods and adjusts the advertising interval based on these periodic assessments. This periodic action approach provides sufficient user experience optimization while significantly reducing energy consumption compared to continuous monitoring, as the system only activates communication optimizations when actually needed.
Solution Approach 2:
The system uses the device's own accelerometer sensor to autonomously determine user presence and adjust communication behavior without requiring external input or continuous power-intensive processing. The accelerometer data serves as a low-power trigger that enables the system to self-optimize its communication strategy, improving user experience while maintaining energy efficiency.
Data Source
AI summary
In one example, a system includes telemetry circuitry configured for communication between a medical device and an external device associated with the medical device and processing circuitry. The processing circuitry is configured to determine an advertising interval for communication between the external device and the medical device based on sensor information from the external device. The processing circuitry is further configured to configure the medical device to advertise at the determined advertising interval.