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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Ureteral double‐J stents performances toward encrustation after long‐term indwelling in a dynamic in vitro in vitro model
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Ureteral double‐J stents performances toward encrustation after long‐term indwelling in a dynamic in vitro in vitro model

机译：在体外模型动态体外的长期留选后，输尿管双j支架表演

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Abstract 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.
机译：摘要研究了三种不同的单腔双j输尿管，并将不同材料的插入含有无菌人造尿液的动态模型，高达6？月。目的是在选定的时间步长1,3和6？月，支架的材料性能，防止形成无机胶囊。在支架插入和支架持续时间之前进行形态，组成和定性分析，用于不同时间步骤，显示出在两个聚氨酯支架的情况下仍然特别低的覆盖水平。机械测试表明，聚氨酯支架和壳聚糖均在留置6个月后，不降低拉伸强度。对支架外表面的润湿行为的评价表示大多数情况下的亲水性行为，其通常在浸入不同时间步骤中浸入人造尿液之后。还2016 Wiley期刊，Inc .J生物保解率B：Appl Biomater，105B：2244-2253,2017。

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