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Guidewire with superelastic core

  • US 20060173382A1
  • Filed: 01/31/2005
  • Published: 08/03/2006
  • Est. Priority Date: 01/31/2005
  • Status: Abandoned Application
First Claim
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1. An elongated flexible guidewire comprising:

  • a flexible corewire formed from a superelastic material and having a first constant diameter portion that tapers distally along a first tapered portion to a second lesser constant diameter portion shorter than said first diameter portion and that again tapers distally along a second tapered portion to a flattened distal portion of said corewire, said first constant diameter portion having a proximal section having a reduced diameter section;

    a hypotube extending over said reduced diameter section of said first constant diameter portion and being bonded to said reduced diameter section;

    a flexible coil surrounding the corewire and attached to the corewire along a length of the second lesser constant diameter portion of the corewire and attached to a distal end of the flattened distal portion of the corewire; and

    , a polymer coating covering an outer surface of said guidewire extending over a major portion of the guidewire.

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