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Updated: Jul 11, 2026
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Tri-layered Electrospinning to Mimic Native Arterial Architecture using Polycaprolactone, Elastin, and Collagen: A Preliminary Study
Published on: January 4, 2011
Suture-reinforced electrospun polydioxanone-elastin small-diameter tubes for use in vascular tissue engineering: a
Matthew J Smith1, Michael J McClure, Scott A Sell
1Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA.
Acta Biomaterialia
|September 28, 2007
Summary
Suture reinforcement significantly enhances the burst strength of polydioxanone (PDO) and elastin vascular grafts. These reinforced grafts exhibit tunable mechanical properties, making them suitable for vascular replacement.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Medical Device Development
Background:
- Small-diameter vascular grafts often fail due to mechanical mismatch with native arteries.
- Electrospun polymer tubes offer potential as vascular prosthetics but require mechanical optimization.
- Polydioxanone (PDO) and elastin blends are explored for their biocompatibility and mechanical properties.
Purpose of the Study:
- To characterize the cross-linking of electrospun PDO-elastin tubes.
- To evaluate the mechanical properties (compliance and burst strength) of suture-reinforced tubes.
- To determine the suitability of these grafts for vascular replacement applications.
Main Methods:
- Fabrication of single and double-layered electrospun tubes from PDO and elastin blends.
- Reinforcement of double-layered tubes with varying numbers of sutures.
- Cross-linking of fabricated tubes.
- Mechanical testing including compliance and burst strength analysis.
Main Results:
- Suture reinforcement significantly increased burst strength (p <0.01) and decreased compliance (p <0.05).
- Cross-linking significantly decreased burst strength (p <0.01) but had non-significant effects on compliance.
- Cross-linked, suture-reinforced tubes achieved burst pressures over 10 times systolic pressure.
- Achieved compliance values matched those of native arteries.
Conclusions:
- Suture reinforcement is an effective strategy to enhance the mechanical integrity of PDO-elastin vascular grafts.
- Cross-linking influences mechanical properties, with a trade-off between burst strength and compliance.
- Tailorable mechanical properties make these electrospun tubes promising candidates for ideal small-diameter vascular grafts.
