LOW FRICTION BACTERICIDAL SILVER COATED CATHETERS

目前生产的导管具有粘性表面， 插入困难，并可能导致许多并发症。 相位 我的研究项目将开发一种银涂层，可以沉积在 导管将粘性表面转变为光滑、低摩擦的 一个. 研究的重点将放在血管成形术上 （PTCA）导管。 涂层将通过离子束辅助施加 沉积（IBAD）工艺。 除了降低摩擦， 涂层还将显著增加 导管和作为杀菌剂。 在第一阶段的研究中， 将涂层施加到聚氨酯试样上。 涂层工艺将 通过对样本的评估进行优化。 测试将包括附着力， 厚度和抗拉强度测试沿着与检查下的光学 和电子显微镜。 在优化了涂覆工艺之后， 将对PTCA导管进行处理，并测量摩擦力的减少。

Catheters which are currently produced have a tacky surface which makes insertion difficult and can result in a number of complications. The Phase I research project will develop a silver coating which can be deposited on the catheter to transform the tacky surface into a lubricous, low friction one. The particular emphasis during the research will be on angioplasty (PTCA) catheters. The coating will be applied by the ion beam assisted deposition (IBAD) process. In addition to lowering the friction, the coating will also significantly increase the tensile strength of the catheter and act as a bactericidal agent. During the Phase I research, coatings will be applied to polyurethane coupons. The coating process will be optimized by evaluating the samples. Tests will include adhesion, thickness, and tensile strength tests along with examination under optical and electron microscopy. After the coating process has been optimized, PTCA catheters will be treated and the reduction in friction measured.