Intracardiac Pacemaker Far-Field Sensing Coordination
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Solution Overview
Problem
Conventional implantable cardiac pacemakers require transvenous leads, which can lead to complications such as infection, Twiddler's syndrome, lead fracture, and poor connection, and lack the ability to coordinate dual chamber pacing without direct communication between pacemakers.
Innovation Solution
The development of self-configuring intracardiac pacemakers that can operate without transvenous leads, enabling coordinated dual chamber pacing by sensing far-field pacing pulses and intrinsic events across heart chambers, allowing for efficient multi-chamber monitoring and therapy delivery through self-configured operating modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transvenous leads are used to connect pacemakers to heart chambers, then dual chamber pacing can be achieved, but complications such as infection, lead fracture, and poor connection occur
Solution Approach 1:
The patent removes the transvenous lead component from the pacing system by using intracardiac pacemakers that are directly implanted in heart chambers. Each pacemaker independently senses and paces its respective chamber without requiring external leads, thereby eliminating lead-related complications such as infection, fracture, and connection failures while maintaining dual chamber pacing functionality.
Solution Approach 2:
The patent introduces far-field sensing as an intermediary mechanism to enable communication between pacemakers in different chambers. By sensing the electrical activity from the opposite chamber through far-field detection, the pacemakers can coordinate their pacing without direct electrical connection via leads, resolving the contradiction between achieving coordinated dual chamber pacing and avoiding lead-related complications.
2Reliability
If separate intracardiac pacemakers are implanted in different chambers, then lead-related complications are eliminated, but coordination between chambers becomes difficult without direct communication
Solution Approach 1:
The patent implements feedback mechanisms where each pacemaker senses electrical activity from its own chamber (near-field) and from the opposite chamber (far-field). This sensory feedback allows each pacemaker to independently determine when to pace its chamber, achieving coordinated dual chamber pacing without complex inter-device communication systems or direct leads between chambers.
Solution Approach 2:
Each intracardiac pacemaker is designed to be self-sufficient, independently sensing both near-field and far-field electrical activity and autonomously controlling its own pacing output. This self-service capability eliminates the need for complex external coordination systems or direct communication links between pacemakers, reducing overall system complexity while maintaining reliable dual chamber pacing.
Data Source
AI summary
The control module of a first pacemaker included in an implantable medical device system including the first pacemaker and a second pacemaker is configured to set a pacing escape interval in response to a far field pacing pulse sensed by the first pacemaker. The far field pacing pulse is a pacing pulse delivered by the second pacemaker. The pacing escape interval is allowed to continue without restarting the in response to a far field intrinsic event sensed by the first pacemaker during the pacing escape interval. The first pacemaker delivers a cardiac pacing pulse to the heart upon expiration of the pacing escape interval.