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Catheter for guide-wire tracking

  • US 4,739,768 A
  • Filed: 06/02/1986
  • Issued: 04/26/1988
  • Est. Priority Date: 06/02/1986
  • Status: Expired due to Term
First Claim
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1. A catheter for use with a guide wire which can be guided from an external body access site to an internal tissue, and into the tissue along a tortuous path of at least about 5 cm through vessels of less than about 3 mm lumen inner diameter, said catheter comprisingan elongate tubular member having proximal and distal ends, and an inner lumen extending between these ends, said member being composed ofa relatively stiff proximal segment means for tracking the wire from the access site to a region adjacent the internal tissue, anda relatively flexible distal segment means at least about 5 cm long for tracking the wire along the tortuous path within the internal tissue.

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