Implantable Device Wakeup Circuitry Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for waking up implantable medical device (IMD) communication circuitry to establish wireless communication sessions consume excessive battery power, especially when the IMD is not within communication range of the device, due to frequent retransmissions in attempts to establish a connection.
Innovation Solution
Implementing multiple identifier codes for IMDs, where the communication device transmits different types of wakeup messages with varying frequencies, allowing the IMD to select the appropriate code for quick data transmission, thereby reducing unnecessary power consumption by synchronizing with more frequent messages only when in range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the IMD initiates communication by activating its circuitry when detecting a critical condition, then data transmission can occur quickly, but excessive battery power is consumed through repeated retransmissions when no communication device is within range
Solution Approach 1:
The communication device performs preliminary actions by continuously transmitting wakeup messages with identifier codes before the IMD needs to communicate. This allows the IMD to detect these pre-transmitted messages and activate its circuitry only when a communication device is already within range, avoiding the need for power-consuming retransmissions while enabling quick data transmission when needed.
2Speed
If the communication device transmits wakeup messages frequently, then the IMD can quickly establish communication when in range, but the communication device consumes more energy
Solution Approach 1:
The communication device transmits wakeup messages with identifier codes at a frequency higher than strictly necessary for normal operation. This excessive transmission of identifier-coded wakeup messages ensures that when the IMD needs to communicate, it can detect these pre-transmitted messages immediately and activate its circuitry without delay, achieving fast communication establishment while the energy cost is acceptable since the communication device has sufficient power resources.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
An IMD (200) has its communication circuitry (270) in an inactive state and has access to two different identifier codes. The IMD (200) activates the communication circuitry (270) based on reception of a wakeup message (30, 40) comprising an identifier code that is identical to the identifier code currently assigned to the IMD (200). A communication device (100) generates and transmits first wakeup messages (40) comprising a first identifier code associated with the IMD (200) and second wakeup messages (30) comprising a second identifier code associated with the IMD (200). Depending on the currently assigned identifier code of the IMD (200) the IMD (200) will respond to either first or second wakeup messages (30, 40).