Fibrous Implant Elastin Reconstruction
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Solution Overview
Problem
Current cardiovascular implants and treatments fail to effectively restore elastin, leading to complications such as neointimal hyperplasia, in-stent restenosis, and vascular stiffening, as they do not adequately stimulate elastin biosynthesis or maintain long-term elasticity in damaged tissues.
Innovation Solution
A fibrous implant composed of micrometric and nanometric fibers forming a three-dimensional network that allows host cells to adhere and synthesize elastin, with controlled pore size, material composition, and mechanical stimulation to promote elastin formation, and can be used as a stent, scaffold, or graft to restore elastin in cardiovascular tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If synthetic grafts (Teflon, Dacron) are used for cardiovascular implants, then availability and compatibility are improved, but long-term functionality deteriorates due to re-occlusion
Solution Approach 1:
The patent employs a porous fibrous scaffold structure that allows host tissue infiltration and elastin formation. The porous architecture enables cell migration, nutrient transport, and mechanical signaling necessary for elastin synthesis, thereby improving long-term functionality while maintaining synthetic graft availability and compatibility.
Solution Approach 2:
The invention creates a composite structure combining synthetic fibrous material with host-derived elastin. The scaffold serves as a temporary template that guides elastin deposition, resulting in a hybrid construct that combines the immediate availability of synthetic materials with the long-term elasticity and functionality of native elastin tissue.
2Ease of manufacture
If elastin is not restored in cardiovascular implants, then manufacturing simplicity is maintained, but disease progression worsens due to neointimal hyperplasia and vascular stiffening
Solution Approach 1:
The scaffold is designed to self-organize and guide host cells to automatically deposit elastin within its fibrous structure. This self-service mechanism eliminates the need for complex external elastin delivery systems or sophisticated manufacturing processes, while effectively preventing neointimalhyperplasia and vascular stiffening through biologically driven elastin restoration.
3Object-affected harmful factors
If immunosuppressive drugs are administered to prevent SMC proliferation, then neointimalhyperplasia is reduced, but late-occlusion occurs due to temporary effect
Solution Approach 1:
The patent converts the harmful proliferative response of smooth muscle cells into a beneficial elastin-producing response. By providing a scaffold that promotes elastin deposition, the system redirects SMC activity from pathological neointimalhyperplasia to constructive tissue regeneration, eliminating the need for immunosuppressive drugs and their associated late-occlusion risks.
4Device complexity
If elastin biosynthesis is not stimulated, then device complexity is minimized, but elasticity is lost leading to vascular stiffening
Solution Approach 1:
The fibrous scaffold acts as an intermediary structure that translates mechanical cues from the vascular environment into biological signals for elastin synthesis. This simple yet effective mediation mechanism restores elasticity without requiring complex active control systems, growth factor delivery mechanisms, or sophisticated device architectures.
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 fibrous implant enables the reconstruction of elastin in cardiovascular tissues, reducing disease progression, improving vascular compliance, and maintaining long-term elasticity, as demonstrated by elastin formation and tissue repair in animal models.
Implementation Method 1
allows host cells to adhere and synthesize elastin
Implementation Method 2
The fibers form a network of stacked fibers with controlled pore size
Implementation Method 3
with controlled pore size, material composition, and mechanical stimulation to promote elastin formation
Implementation Method 4
The formation of elastin is also better known as elastogenesis
Implementation Method 5
Elastin is a key extracellular matrix (ECM) component that provides resilience and elasticity
Implementation Method 6
improving vascular compliance, and maintaining long-term elasticity
Data Source
AI summary
A cardiovascular fibrous implant for rebuilding elastin and the use of such an implant, wherein the implant is comprised of fibers forming a network, and wherein the fibers comprised in said network have a fiber diameter of 150 μm or less.