| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Functional and Structural Thin Films and Coatings
|
| Presentation Title |
TiN and DLC Coated Medical Grade Polyurethane (PUR) for Controlled Surface Degradation and Improved Mechanical Properties |
| Author(s) |
Maren K. Fossum, Mohammad Ibrahim, Javier Sanchez, Christoph Burgstaller, Emma Strömberg, Gunilla Björling, Ragnhild E. Aune |
| On-Site Speaker (Planned) |
Maren K. Fossum |
| Abstract Scope |
Central Venous Catheters (CVCs) are one of the most frequently used medical devices in a hospital setting today. The device, often made from medical grade polyurethane (PUR), is prone to complications such as thrombosis, bloodstream infections and mechanical failures. With the aim of targeting enhanced chemical and mechanical behaviour of CVCs, as well as improved surface properties, the effect of TiN and DLC nanocomposite coatings deposited onto medical grade PUR substrates (aliphatic carbothane with 20 wt-% barium sulphate loading) have been investigated. The thickness and topography of the coatings, as well as their adhesion performances were evaluated together with their overall chemical stability, hydrophobicity, hemocompatibility, stress loading and scratch resistance. Both coatings proved to decrease the rate of degradation under in-vitro environmental conditions, as well as offer reduced risks of blood coagulation. Furthermore, improved mechanical properties were confirmed, which potentially could prolong the service lifetime of CVCs during clinical use. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Biomaterials, |