Coiled Intracardiac Device with Flexible Membrane for Cardiac Elasticity
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Solution Overview
Problem
Current intracardiac devices for treating cardiomyopathies and valvulopathies often provoke fibrotic reactions, reduce elasticity, and have high thrombogenic capacity, leading to compromised functionality and short-term reliability.
Innovation Solution
An intracardiac device with an elongated shape, partially wound in coils, made of metal wire, and attachable to cardiac structures, featuring a metal mesh tube for extended exposure to blood flow, reducing thrombosis and allowing high elastic deformation, along with a holding tool for aiding implantation and maintaining device configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intracardiac devices are implanted to treat cardiomyopathies and valvulopathies, then cardiac function is restored, but fibrotic reactions occur and tissue elasticity is reduced
Solution Approach 1:
The patent employs a flexible membrane covering the coil structure, creating a biocompatible interface that reduces fibrotic reactions while maintaining device flexibility and elasticity. The membrane acts as a flexible shell that minimizes tissue irritation and preserves natural cardiac tissue elasticity during device operation
Solution Approach 2:
The device combines multiple materials with complementary properties: the coil structure provides elastic energy storage, the membrane provides biocompatibility and reduces fibrosis, and the metal mesh provides structural support while allowing blood flow. This composite material approach resolves the contradiction by distributing functions across different materials
2Reliability
If intracardiac devices are implanted to treat cardiomyopathies and valvulopathies, then cardiac function is restored, but thrombogenic capacity increases
Solution Approach 1:
The patent incorporates a metal mesh structure with porous characteristics that allows blood flow through the device. This porosity prevents blood stasis and reduces thrombogenic capacity while maintaining the structural integrity needed for cardiac function restoration
Solution Approach 2:
The device design incorporates fluid dynamics considerations, allowing blood to flow freely around and through the device structure. The coil and mesh configuration creates hydraulic pathways that prevent blood pooling and reduce thrombus formation risk
3Strength
If intracardiac devices are made rigid for structural support, then device strength is improved, but elasticity and adaptability to cardiac cycle are reduced
Solution Approach 1:
The device is divided into functional segments: the coil structure for elastic energy storage, the membrane for flexibility and biocompatibility, and the metal mesh for structural support. This segmentation allows each component to optimize its properties without compromising the others, achieving both strength and elasticity
Solution Approach 2:
The device incorporates dynamic elements including the elastic coil that can expand and contract with the cardiac cycle, and the flexible membrane that adapts to tissue movement. This dynamic design maintains structural strength while allowing the necessary elasticity to match cardiac mechanical cycles
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
The device minimizes tissue reaction, reduces thrombogenicity, maintains elasticity over longer periods, and enhances implantation ease, providing improved reliability and cardiac function restoration by storing and releasing energy during the cardiac cycle.
Implementation Method 1
the coils being selected in material, number and dimension to permit the elastic elongation of the intracardiac device higher than 10% of the rest length of the intracardiac device
Implementation Method 2
storing energy from the cardiac structures and ceding energy to the cardiac structures during the cardiac cycle
Implementation Method 3
being exposed to blood flow during use
Data Source
Figure 1~6
Figure 2
Figure 3
AI summary
An intracardiac device (101) for restoring the functional elasticity of the cardiac structures, in particular for the treatment of cardiomyopathies and or valvulopathies, by storing energy from the cardiac structures and ceding energy to the cardiac structures during the cardiac cycle, has an elongated shape, is at least partially wound in coils (83) and is attachable to a cardiac structure; the coils (83) are selected in material, number and dimension so as to allow an elastic elongation of the intracardiac device (101) higher than 10% of the rest length of the intracardiac device (101) and are exposed, in use, to the blood flow.