Claims
- 1. An ablation catheter which comprises:
a guiding catheter; and an inner catheter disposed within said guiding catheter, said inner catheter comprising an elongated central shaft having a distal end, and an electrode assembly attached to the distal end of said elongated central shaft, said electrode assembly comprising a catheter tube having a plurality of apertures therethrough, a linear electrode, a porous tip electrode, and a device for articulating said electrode assembly.
- 2. The catheter tube of claim 1 wherein said linear electrode is made from a combination of hypodermic tubing and solid wire.
- 3. The catheter of claim 1 further comprising monitoring electrodes nonconductively mounted on said linear electrode.
- 4. The catheter tube of claim 1 wherein the articulating device comprises at least one pull wire attached to a distal end of said electrode assembly.
- 5. The catheter tube of claim 1 wherein said catheter tube is made from shape memory tubing, thereby allowing said catheter tube to bend to a predetermined shape upon the application of radio frequency energy.
- 6. The catheter of claim 1, positioned within a lumen of an outer guiding catheter, said guiding catheter having a second catheter steering mechanism.
- 7. An ablation catheter, which catheter comprises:
a flexible plastic catheter tube; and at least one linear electrode comprising a tubular array of conductive metal strands carried by said catheter tube, which catheter has a first steering mechanism; and a guiding catheter having a lumen occupied by said ablation catheter, said guiding catheter having a second steering mechanism.
- 8. The catheter of claim 7 in which said plastic catheter tube extends through said tubular array of conductive metal strands, said catheter tube defining a plurality of apertures to permit the flow of cooling fluid from the lumen of the catheter tube and through said apertures, to flow among said conductive metal strands.
- 9. The catheter of claim 7 in which a porous second electrode connects with one end of the plastic catheter tube.
Parent Case Info
[0001] This is a division of application Ser. No. 09/642,202 filed Aug. 21, 2000.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09642202 |
Aug 2000 |
US |
Child |
10657647 |
Sep 2003 |
US |