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US 8,262,653 B2Granted
Irrigated catheter having a porous tip electrode
AssigneeBiosense Webster, Inc.
InventorClaudio P. Plaza
Life of this patent
Estimating the term…
Abstract
A porous tip electrode catheter is provided. The porous tip electrode comprises a porous material through which fluid can pass. The porous tip electrode is covered with a thin coating of conductive metal having openings through which fluids can pass.
Claims30
An irrigated electrode catheter for ablating tissue, the catheter comprising:
- a catheter body having proximal and distal ends and a lumen extending therethrough;
- a tip section having proximal and distal ends, the proximal end of the tip section being fixedly attached to the distal end of the catheter body;
- a porous tip electrode fixedly attached to the distal end of the tip section, the tip electrode comprising a non-conductive porous material and a conductive porous coating adapted to cover the non-conductive porous material, wherein the conductive porous coating has a thickness of about 0.2 μm to about 2 μm;
- and
- an irrigation tube extending through the catheter body and into the porous tip electrode of the tip section, whereby fluid passing through the irrigation tube can pass through the non-conductive porous material and the conductive porous coating to reach surrounding tissue.
2 more elements
An irrigated electrode catheter for ablating tissue, the catheter comprising:
- a catheter body having an outer wall, proximal and distal ends, and a lumen extending therethrough;
- a tip section comprising a segment of flexible tubing having proximal and distal ends and at least one lumen therethrough, the proximal end of the tip section being fixedly attached to the distal end of the catheter body;
- a porous tip electrode fixedly attached to the distal end of the tubing of the tip section, the tip electrode having an outer surface and comprising a non-conductive porous material through which fluid can pass and a thin metal coating adapted to cover the non-conductive porous material, wherein the thin metal coating has a thickness of about 0.2 μm to about 2 μm;
- and
- an irrigation tube having proximal and distal ends extending through the central lumen in the catheter body, wherein the distal end of the irrigation tube is in fluid communication with a proximal end of a passage in the tip electrode, whereby fluid can pass through the irrigation tube, into the passage in the tip electrode and through the porous material of the tip electrode to the outer surface of the tip electrode.
2 more elements
An irrigated electrode catheter for ablating tissue, the catheter comprising:
- a catheter body;
- a tip section attached to the catheter body;
- a porous tip electrode fixedly attached to the tip section, the tip electrode comprising a non-conductive porous material and a conductive porous coating generally encapsulating the non-conductive porous material, wherein the conductive porous coating has a thickness of about 0.2 μm to about 2 μm;
- and
- an irrigation tube extending through the catheter body and into the porous tip electrode of the tip section, whereby fluid passing through the irrigation tube can pass through the non-conductive porous material and the conductive porous coating to reach surrounding tissue.
2 more elements
An irrigated electrode catheter for ablating tissue, the catheter comprising:
- a catheter body;
- a tip section attached to the catheter body;
- a porous tip electrode fixedly attached to the tip section, the tip electrode comprising an inner non-conductive porous material and an outer conductive porous material, wherein the outer conductive porous material has a thickness of about 0.2 μm to about 2 μm;
- and
- an irrigation tube extending through the catheter body and into the porous tip electrode of the tip section, whereby fluid passing through the irrigation tube can pass through the non-conductive porous material and the conductive porous material to reach surrounding tissue.
2 more elements
Dependencies are inferred from the claim text.