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Biodegradable sheath-core biphasic monofilament braided stent for bio-functional treatment of esophageal strictures

  • Cheol Min Han
  • , Eugene Lih
  • , Seul Ki Choi
  • , Tarek M. Bedair
  • , Young Jae Lee
  • , Wooram Park
  • , Dong Keun Han
  • , Jun Sik Son
  • , Yoon Ki Joung
  • Korea Institute of Science and Technology
  • Jeonju University
  • Minia University
  • S&G Biotech Inc.
  • CHA University
  • Korea Textile Development Institute
  • University of Science and Technology UST

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, a polydioxanone (PDO) and poly(L-lactic acid) (PLLA) sheath-core biphasic monofilament was designed to develop an esophageal stent with improved mechanical properties and controlled biodegradability. The radial force of PDO/PLLA sheath-core stent was 10.24 N, while that of PDO stent was 5.64 N. Deteriorations of tensile strength, elastic modulus and elongation during degradation test were also delayed on PDO/PLLA group. Hyaluronic acid–dopamine conjugate and BaSO4/PDO conjugate coating layers provided improved tissue adhesion strength and reasonable X-ray contrast, respectively. Taken all together, the sheath-core filaments with tissue adhesive and radiopaque properties will be useful in designing esophageal stents.

Original languageEnglish
Pages (from-to)396-406
Number of pages11
JournalJournal of Industrial and Engineering Chemistry
Volume67
DOIs
StatePublished - 25 Nov 2018
Externally publishedYes

Keywords

  • Esophageal stent
  • Poly(L-lactic acid)
  • Polydioxanone
  • Sheath-core monofilament
  • Surface treatments

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