Leadless Cardiac Pacing Device Coronary Sinus Implantation
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Solution Overview
Problem
Conventional pacemakers require leads that extend from a pulse generator to cardiac electrodes, which can be invasive and may not always provide optimal positioning or functionality for cardiac pacing, particularly in delivering therapy to multiple heart chambers effectively.
Innovation Solution
A leadless cardiac pacing device with a self-contained design, including a housing, electrodes, and a power source, that can be implanted within the coronary sinus or other cardiac chambers, allowing for independent operation and delivery of pacing pulses to various heart areas without external leads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lead-based pacemakers are used, then electrical connection to heart chambers is established, but invasiveness increases and positioning accuracy decreases
Solution Approach 1:
The patent extracts and eliminates the lead component from the conventional pacemaker system. The leadless pacemaker achieves electrical connection to the heart chambers by placing electrodes directly within the coronary sinus, removing the need for invasive leads that extend from the pulse generator through tissue. This extraction of the lead element directly reduces invasiveness while maintaining pacing reliability through direct chamber contact.
2Reliability
If lead-based systems are used, then pacing function is achieved, but device complexity increases
Solution Approach 1:
The patent merges the pacemaker functionality directly into the coronary sinus by integrating the pulse generator and electrodes into a single leadless unit. This consolidation eliminates the need for separate lead components, reducing overall system complexity while preserving essential pacing functions. The merged design integrates power supply, control circuitry, and electrodes into one cohesive device that can be implanted directly in the heart.
Solution Approach 2:
The leadless pacemaker design provides multi-functionality by enabling the same device to pace multiple heart chambers (right atrium, left atrium, right ventricle, left ventricle) through electrodes positioned in the coronary sinus. This universal approach allows a single device to perform multiple pacing functions that would traditionally require separate lead systems, thereby reducing overall device complexity.
3Reliability
If traditional leads are used, then electrical connection is established, but positioning precision is insufficient for optimal therapy delivery
Solution Approach 1:
The patent employs preliminary positioning actions through the delivery catheter system that guides the leadless pacemaker to precise locations within the coronary sinus before implantation. The delivery mechanism allows for pre-positioning of the device at optimal sites, ensuring accurate electrode placement against the heart chamber walls. This preliminary positioning action enables precise therapy delivery while maintaining reliable electrical connection.
Data Source
AI summary
A leadless pacing device may include a housing having a proximal end and a distal end, and a set of one or more electrodes supported by the housing. The housing may include a first portion and a second portion, with a guide wire port extending through the second portion. A guide wire lumen may extend through the second portion of the housing and the guide wire port may be located at a proximal end of the guide wire lumen. An exposed electrode may be located on a side of the housing that is opposite a side on which the guide wire port is located. The leadless pacing device may include a fixing member on the housing and extending radially from the housing. The leadless pacing device may further include a proximal member extending proximally from a proximal end of the housing. The proximal member may be elongated.