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Catheter with irrigated tip electrode with porous substrate and high density surface micro-electrodes

  • US 10,034,707 B2
  • Filed: 12/30/2014
  • Issued: 07/31/2018
  • Est. Priority Date: 12/30/2014
  • Status: Active Grant
First Claim
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1. A catheter comprising:

  • an elongated catheter body;

    a distal electrode member distal of the catheter body and having a porous substrate and a plurality of surface electrodes on portions of an outer surface of the porous substrate, the porous substrate having an interior chamber adapted to receive conductive fluid;

    a plurality of electrode lead wires, each having a distal end connected on an outer surface of the porous substrate to a respective one of the surface electrodes and a proximal end extending through the catheter body, at least one of the plurality of electrode lead wires having its distal end connected to a first one of the plurality of surface electrodes and a portion extending underneath and insulated from a second one of the plurality of surface electrodes; and

    a chamber lead wire having a distal portion extending into the interior chamber, the chamber lead wire adapted to electrify the conductive fluid in the interior chamber,wherein the porous substrate is adapted to pass the conductive fluid from the interior chamber to the outer surface of the porous substrate.

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