Leadless Pacing Communication Protocols for Battery Life Balance

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Solution Overview

Problem

Leadless pacing devices face challenges in power management due to high power consumption during inter-device communication, which can deplete the non-rechargeable power source quickly, necessitating frequent explant and implant procedures.

Innovation Solution

Implementing operational-mode-specific communication protocols that prioritize power draw from rechargeable sources over non-rechargeable sources, minimizing power consumption from the non-rechargeable source to extend its operational lifetime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If inter-device communication is implemented between implantable medical devices, then coordination of therapy and sensing functions is improved, but power consumption increases

Engineering Contradiction:

Improvecoordination of therapy and sensing functionsVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The communication protocol dynamically adapts its parameters based on the operational mode of the devices. During high-power therapy delivery, communication frequency and data volume are reduced to minimize power consumption. During low-power periods, more extensive communication can occur to coordinate sensing functions and update therapy parameters, optimizing the balance between versatility and energy use.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

Inter-device communication is implemented periodically rather than continuously. The system schedules communication events at specific intervals and during specific operational phases, allowing devices to enter low-power states between communication events while still maintaining coordinated therapy and sensing functions through efficient periodic data exchange.

Inventive Principle:

Principle #19Periodic action

2Reliability

If communication between devices operates at high power levels, then communication reliability is improved, but operational lifetime of non-rechargeable device is reduced

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidoperational lifetime

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The communication protocol implements multiple parameter sets that can be switched based on operational conditions. During critical therapy coordination, higher power levels with more robust modulation and error correction are used to ensure reliability. During routine sensing data exchange, lower power parameters are employed to conserve energy, dynamically adjusting the balance between communication reliability and power consumption based on clinical needs.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12599773B2Power management for implantable medical device systems

Publication Date: 2026.04.14 MEDTRONIC INC

AI summary

Techniques for minimizing rate of depletion of a non-rechargeable power source, to extend the operational lifetime of an implantable medical device that includes the non-rechargeable power source, by enforcing operational-mode-specific communication protocols whereby inter-device communication between the implantable medical device and another implantable medical device is such that level of power draw from the non-rechargeable power source by the implantable medical device is less than level of power draw from the rechargeable power source by the another implantable medical device for the implantable medical devices to engage in communication with each other.