Patent ID: 8597344

Claim:
A composite wire, comprising: a single wire having a first free end, a second free end, and a main body length therebetween for forming a vascular interventional device, said single wire including: an elongated inner core having a selected length and formed from a radiopaque metal; an outer metal layer disposed around said elongated inner core along the length of said elongated inner core, wherein said elongated inner core and said outer metal layer are made of dissimilar metals; and a continuous intermediate polymer layer disposed between said outer metal layer and said elongated inner core, said continuous intermediate polymer layer being configured to insulate said elongated inner core and said outer metal layer from galvanic corrosion between said elongated inner core and said outer metal layer, and said continuous intermediate polymer layer being formed from a polymer selected from the group consisting of poly-para-xylylene, a fluorine substituted poly-para-xylylene and combinations thereof; and a segment of tubing joining the first free end of said single wire and the second free end of said single wire together, said first and second free ends of said single wire being in close proximity to each other such that said segment of tubing joining the first free end of said single wire and the second free end of said single wire together is configured to prevent said first and second free ends of said single wire from extending away from the main body length of said single wire.