Ablation catheter with positional sensor
AssigneeBiosense Webster, Inc.
InventorsGregory G. Brucker, Steven D. Savage
Life of this patent
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Abstract
An ablation catheter is provided which comprises a steerable catheter including a distal portion and a proximal portion. An ablation electrode is carried by the distal portion, with the ablation electrode having structure defining an interior space and having at least one aperture. A positional sensor is located in the interior space, wherein the proximal portion is connected to a source of cooling liquid which flows out of the aperture. The ablation catheter provides a suitable flow of fluid through the aperture while providing a space or volume sufficiently large for placement of a positional sensor.
Claims23
An ablation catheter which comprises:
- a steerable catheter including a distal portion;
- an ablation electrode carried by said distal portion, said ablation electrode comprising a helically shaped tube;
- and
- a positional sensor located in a space defined by said helically shaped tube.
An ablation catheter which comprises:
- a steerable catheter including a distal portion which is extendable;
- an ablation electrode carried by said distal portion, said ablation electrode comprising a helically shaped tube, said helically shaped tube having a proximal end and a distal end;
- a positional sensor located in a space defined by said helically shaped tube;
- and
- said proximal end being coupled to a source of cooling fluid whereby the cooling fluid flows through said helically shaped tube, cooling the tubing and then flows around the positional sensor and exits the catheter by flowing between windings of said helically shaped tube.
An ablation catheter which comprises:
- a steerable catheter including a distal portion which is extendable;
- an ablation electrode carried by said distal portion, said ablation electrode comprising a helically shaped tube, said helically shaped tube being wound so that each turn of the tube touches neighboring turns and having a proximal end and a distal end;
- said helically shaped tube defining openings for exit of said cooling fluid as it passes through said tube;
- a positional sensor located in a space defined by said helically shaped tube;
- said proximal end being coupled to a source of cooling fluid whereby said cooling fluid flows in said helically shaped tube and exits from said defined openings.
An ablation catheter which comprises:
- a steerable catheter including a proximal portion comprising a handle, a distal portion, and a sliding mechanism for extending said distal portion;
- an ablation electrode carried by said distal portion, said ablation electrode comprising a helically shaped tube;
- said helically shaped tube having a proximal end and a distal end;
- said proximal end being coupled to a source of cooling fluid;
- said helically shaped tube defining openings for exit of said cooling fluid as it passes through said tube;
- and
- said helically shaped tube being wound so that each turn of the tube touches neighboring turns.
An ablation catheter which comprises:
- a steerable catheter including a distal portion;
- an ablation electrode carried by said distal portion, said ablation electrode comprising a hollow electrode formed of a metal sheet defining a plurality of holes;
- and
- a positional sensor located in a space defined by said hollow electrode.
An ablation catheter comprising:
- a steerable catheter including a distal portion and a proximal portion;
- an ablation electrode carried by said distal portion, said ablation electrode having structure defining an interior space and having at least one aperture;
- and
- a positional sensor located in the interior space;
- whereby said proximal portion is connected to a source of cooling fluid which flows out of said at least one aperture.
Dependencies are inferred from the claim text.