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SYSTEMS FOR TREATING A HOLLOW ANATOMICAL STRUCTURE

  • US 20100106150A1
  • Filed: 01/12/2010
  • Published: 04/29/2010
  • Est. Priority Date: 07/21/2005
  • Status: Active Grant
First Claim
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1. A catheter for use in treating a length of a blood vessel together with an introducer sheath having a reference location configured to be located outside the patient, the catheter comprising:

  • an elongated shaft having a distal section and a proximal section, the shaft being sized for insertion into a blood vessel;

    a resistive heating coil;

    wherein the resistive heating coil is for applying energy along a length of a blood vessel in consecutive treated segments of the blood vessel to thereby occlude the length of the blood vessel;

    the heating coil located adjacent the distal section of the shaft, and having a coil length from about 2 centimeters to about 10 centimeters;

    a plurality of index markings along the shaft of the catheter;

    wherein the index markings are configured to be sequentially indexed in a distal to proximal direction adjacent the introducer reference location to sequentially position the resistive heating coil axially along the length of the blood vessel; and

    at least one final marking that indicates a final shaft distance from said final marking to the proximal end of the coil, the final shaft distance comprising approximately the length of an introducer sheath and a safety zone distance on the shaft;

    wherein consecutive index markings are spaced apart by an index marking length, the index marking length being from about 0.1 centimeter to about 1.5 centimeters less than the coil length to ensure overlap of consecutive treated segments of the blood vessel, re-treatment of the blood vessel occurring at the overlap when the resistive coil is retracted along the blood vessel by successive index marking lengths.

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