Premium
Ureteral double‐J stents performances toward encrustation after long‐term indwelling in a dynamic in vitro model
Author(s) -
Cauda Valentina,
Chiodoni Angelica,
Laurenti Marco,
Canavese Giancarlo,
Tommasi Tonia
Publication year - 2017
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.33756
Subject(s) - stent , polyurethane , lumen (anatomy) , materials science , biomedical engineering , ultimate tensile strength , immersion (mathematics) , wetting , surgery , composite material , medicine , mathematics , pure mathematics
Three different single‐lumen double‐J ureteral stents of different materials were studied and compared after the insertion into a dynamic in vitro model with sterile artificial urine up to 6 months. The aim was to evaluate, at selected time steps of 1, 3, and 6 months, the material performances of the stents in preventing the formation of inorganic encrustations. Morphological, compositional, and qualitative analyses were carried out both before stent insertion and after stent permanence for the different time steps, showing an increasing level of encrustation which remains particularly low in the case of two polyurethane stents. Mechanical tests show that both the polyurethane stents and the chitosan one do not decrease the tensile strength after 6 months of indwelling. Evaluation of the wetting behavior of the stent outer surfaces indicates a hydrophilic behavior in most of the cases, which is generally preserved after immersion in artificial urine for the different time steps. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 2244–2253, 2017.