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Electrospun bioresorbable heart valve scaffold for tissue engineering.

C Del Gaudio¹, M Grigioni, A Bianco

¹Cardiovascular Bioengineering, Technology and Health Department, National Institute of Health, Rome - Italy.

The International Journal of Artificial Organs

|February 21, 2008

Summary

This study presents a novel tissue-engineered heart valve using electrospun poly(epsilon-caprolactone) (PCL). The PCL scaffold shows promising mechanical and hydraulic performance, offering a potential alternative to current prosthetic heart valves.

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Area of Science:

Biomaterials Science
Regenerative Medicine
Cardiovascular Engineering

Background:

Current prosthetic heart valves have limitations including calcification, tearing, thromboembolism, and hemolysis.
These devices require lifelong patient monitoring and intervention.
Tissue engineering offers a promising alternative for developing improved heart valve replacements.

Purpose of the Study:

To develop and characterize a novel trileaflet heart valve scaffold using electrospinning.
To evaluate the mechanical and hydraulic performance of the engineered scaffold.
To assess the potential of this approach for creating bioresorbable heart valves.

Main Methods:

Fabrication of a trileaflet poly(epsilon-caprolactone) (PCL) scaffold via electrospinning with a custom rotating target.

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Optimization of process parameters to achieve desired microstructure and mechanical properties.

Functional characterization using a pulse duplicator to assess mechanical and hydraulic performance.

Main Results:

The electrospun PCL heart valve scaffold demonstrated synchronous leaflet opening during the ejection phase.
Effective leaflet apposition was observed, minimizing leakage during the diastolic phase.
The scaffold exhibited suitable microstructure and mechanical performance for heart valve function.

Conclusions:

The proposed tissue engineering approach using electrospun PCL is a viable strategy for novel heart valve development.
The preliminary findings suggest a successful perspective for creating bioresorbable tissue-engineered heart valves.
This technology could offer a safer and more durable alternative to existing prosthetic valves.