| http://www.w3.org/ns/prov#value | - In one embodiment, the exterior surface of device 20 includes an electrically insulative material, layer or coating such as ePTFE. For example, it may be desirable to provide a coating that is anti-thrombogenic (e.g., perfluorocarbon coatings applied using supercritical carbon dioxide) so as to prevent thrombus formation on device 20.
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