Intracardiac Pacemaker Far-Field Coordination
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Solution Overview
Problem
Current 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 in solo or duo modes, eliminating the need for transvenous leads by sensing far-field pacing pulses and events to coordinate dual chamber pacing without direct communication, allowing for efficient multi-chamber monitoring and therapy delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transvenous leads are used to deliver pacing electrodes to heart chambers, then dual chamber pacing can be achieved, but complications such as infection, Twiddler's syndrome, lead fracture, and poor connection occur
Solution Approach 1:
The patent extracts and eliminates the transvenous lead component from the pacemaker system. Intracardiac pacemakers are implanted directly into the heart chambers without requiring transvenous leads to deliver pacing electrodes, thereby removing the source of lead-related complications such as infection, Twiddler's syndrome, lead fracture, and poor connection while maintaining the ability to perform dual chamber pacing
Solution Approach 2:
The patent uses far-field sensing as an intermediary mechanism to enable communication and coordination between separate intracardiac pacemakers. Each pacemaker senses far-field pacing pulses from the other chamber through the heart tissue, allowing indirect coordination without direct communication hardware or transvenous leads
2Object-affected harmful factors
If separate intracardiac pacemakers are implanted in different heart chambers without direct communication, then lead-related complications are eliminated, but the ability to coordinate dual chamber pacing is lost
Solution Approach 1:
The patent implements feedback mechanisms where each intracardiac pacemaker senses far-field pacing pulses from the other chamber and uses this information to adjust its own pacing timing. The pacemakers detect far-field events and use this feedback to coordinate their pacing cycles, ensuring proper atrioventricular synchronization without requiring direct communication between devices
Solution Approach 2:
The patent uses far-field sensing through heart tissue as an intermediary communication channel between separate intracardiac pacemakers. Each pacemaker detects the electrical activity from the other chamber through the conductive properties of the heart tissue, enabling indirect coordination and dual chamber pacing functionality without direct device-to-device communication
3Reliability
If intracardiac pacemakers sense far-field pacing pulses and self-configure, then coordination between chambers is achieved without transvenous leads, but sensing precision requirements increase
Solution Approach 1:
The patent applies local quality by configuring each intracardiac pacemaker with specialized sensing capabilities tailored to its specific implantation location and chamber. The sensing parameters, thresholds, and filtering are optimized for detecting far-field events from the opposite chamber, allowing each device to be precisely tuned to its local electrical environment and far-field signal characteristics
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables efficient and coordinated dual chamber pacing without the need for transvenous leads, reducing complications and improving the reliability of pacemaker operations by allowing intracardiac pacemakers to self-configure and communicate indirectly, thus enhancing patient safety and device performance.
Implementation Method 1
a sensing module configured to receive a cardiac electrical signal via a pair of electrodes and sense far field pacing pulses from the cardiac electrical signal
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.