Tag Archives: implanted devices

Researchers create coating material to prevent blood clots associated with implanted devices

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A team of researchers from UCLA and the University of Michigan has developed a material that could help prevent blood clots associated with catheters, heart valves, vascular grafts and other implanted biomedical devices.

Blood clots at or near implanted devices are thought to occur when the flow of nitric oxide, a naturally occurring clot-preventing agent generated in the blood vessels, is cut off. When this occurs, the devices can fail. (more…)

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Selenium Controls Staph on Implant Material

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A coating of selenium nanoparticles significantly reduces the growth of Staphylococcus aureus on polycarbonate, a material common in implanted devices such as catheters and endotracheal tubes, engineers at Brown University report in a new study.

PROVIDENCE, R.I. [Brown University] — Selenium is an inexpensive element that naturally belongs in the body. It is also known to combat bacteria. Still, it had not been tried as an antibiotic coating on a medical device material. In a new study, Brown University engineers report that when they used selenium nanoparticles to coat polycarbonate, the material of catheters and endotracheal tubes, the results were significant reductions in cultured populations of Staphylococcus aureus bacteria, sometimes by as much as 90 percent. (more…)

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