MATERIALS | MEDICAL TUBING
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Momentive says silicone elastomers are ideas for applications such as frozen plasma bags and tubing
to stop a process called catheter- associated urinary tract infection. It works by shining light – with a 405nm wavelength – down the tube. This creates reactive oxygen species (ROS), which attack cell structures and cause cell death. He says it could compete with established techniques such as silver coatings, antibiotic coatings and passive surface modification. Puray has conducted in-vitro tests
against E. coli and Staphylococcus. “This is an active antibiotic system,” he said. “It has comparable cost with coatings, with superior infection prevention.” He added that sales of antimicrobial products are growing with a CAGR of 8-12%.
Banishing PFAS Monika Kriete, technical marketing manager for medical solutions at Lubrizol in EMEA, said that
TPU tubing has wide medical use – including acute vascular infusion and in gastric catheters. Benefits include strength with thin walls – allowing high flow rates – as well as softening (for patient comfort) and visibility under X-rays. “They have great potential for PFAS
replacement,” she said. PFAS are substances that do
not easily degrade in the
environment and can be toxic over long periods. They are often used in
medical devices – such as catheters – to add properties such as lubrication, chemical resistance and electrical insulation. For instance, when used in a peripherally
inserted central catheter (PICC), their lubricity is crucial for deploying stents and balloons. However, current devices are not perfect – with a reported 126 PICC failures in 2024. “There is an imminent need for lubricious
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