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Related Experiment Video

Updated: Jan 17, 2026

Fabrication of Small Caliber Stent-grafts Using Electrospinning and Balloon Expandable Bare Metal Stents
06:55

Fabrication of Small Caliber Stent-grafts Using Electrospinning and Balloon Expandable Bare Metal Stents

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Study on Polyurethane Dipping Double-Layer Membrane Coating Method for Developing Polymer-Covered Stents.

So Yeun Choi1, Jeong Chan Lee1,2, Il Won Suh

  • 1Department of Bionanotechnology and Bioconvergence Engineering, Graduate School, Jeonbuk National University, Jeonju, Republic of Korea.

Tissue Engineering. Part C, Methods
|September 15, 2025
PubMed
Summary

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This summary is machine-generated.

This study introduces a novel double-layer membrane for covered stents using polyurethane (PU), improving mechanical strength and adhesion. This electrospinning and dipping method overcomes limitations of current stent coatings.

Area of Science:

  • Biomaterials Engineering
  • Medical Device Technology
  • Polymer Science

Background:

  • Covered stents, often coated with silicone or e-PTFE, face challenges like drug delivery limitations and poor vascular application.
  • Electrospinning offers multifunctionality for stent coatings, but issues like membrane delamination due to fiber weakness persist.

Purpose of the Study:

  • To develop a novel double-layer membrane for covered stents by combining dipping and electrospinning methods.
  • To enhance the mechanical properties and adhesion of stent coatings using polyurethane (PU).

Main Methods:

  • Fabrication of a double-layer membrane using a combination of dipping and electrospinning techniques.
  • Utilizing polyurethane (PU) as the primary material for the membrane.
  • Evaluation of the mechanical properties and adhesion of the developed membrane to the stent.
Keywords:
covered stentdipping filmelectrospinningmulti-layer membrane

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Last Updated: Jan 17, 2026

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Main Results:

  • The developed double-layer PU membrane demonstrated high mechanical properties.
  • Excellent adhesion of the membrane to the stent was confirmed.
  • Significant improvement in the overall mechanical properties of the covered stent was observed.

Conclusions:

  • The combined dipping and electrospinning method effectively creates a robust double-layer membrane for covered stents.
  • This approach enhances adhesion and mechanical integrity, addressing limitations of existing electrospun stent coatings.
  • The novel fabrication technique shows promise for improving the performance and applicability of covered stents.