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Map and ablate open irrigated hybrid catheter

  • US 9,393,072 B2
  • Filed: 06/03/2014
  • Issued: 07/19/2016
  • Est. Priority Date: 06/30/2009
  • Status: Active Grant
First Claim
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1. An open-irrigated catheter system for performing mapping and ablation functions, comprising:

  • a tip section having an exterior wall that defines an open interior region within the tip section, wherein the exterior wall includes a plurality of mapping electrode openings, wherein at least one of the mapping electrode openings is spaced apart from a distal end of the exterior wall of the tip section, wherein the exterior wall includes at least one irrigation port in fluid communication with the open interior, and wherein the exterior wall is conductive for delivering radio frequency (RF) energy for an RF ablation procedure;

    a distal insert positioned within the tip section separating the open interior region into a distal fluid reservoir and a proximal fluid reservoir;

    a fluid path extending through the open interior region and in fluid communication with the distal fluid reservoir, the proximal fluid reservoir, and at least one irrigation port;

    a plurality of mapping electrodes seated in the distal insert and aligned with the mapping electrode openings in the tip section;

    wherein the distal insert has a peripheral surface with openings therein sized to receive at least one insulating element, wherein the distal insert includes at least one insulating element electrically insulating the mapping electrodes from the fluid path, the at least one insulating element including at least one insulated channel configured to electrically insulated wires extending from the plurality of mapping electrodes from the fluid path.

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