RF method for controlled depth ablation of soft tissue
First Claim
1. A method of ablating a tissue surface, comprising:
- providing an RF ablation device including, a delivery catheter, a first RF electrode at least partially positioned in a lumen of the delivery catheter, and a second RF electrode positioned at least partially in the first RF electrode, a distal end of the second RF electrode having a distal end that is substantially a groundpad; and
moving a distal end of the first RF electrode in a direction away from the distal end of the second RF electrode to create an ablation line along a selected tissue site between the second RF electrode distal end and the first electrode distal end.
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Accused Products
Abstract
An RF ablation apparatus has a delivery catheter with a delivery catheter lumen and a delivery catheter distal end. A first RF electrode is positioned in the delivery catheter lumen. The first RF electrode has a distal end, RF conductive surface, and a lumen. A second RF electrode has a distal end. The second RF electrode is at least partially positioned in the lumen of the first catheter, with its distal end positioned at the exterior of the first RF electrode distal end. Additionally, the second RF electrode distal end has a geometry that permits it to be substantially a groundpad. The distal end of the first RF electrode is moved in a direction away from the second RF electrode distal end to create a painting effect of an ablation band or line between the two distal ends. Alternatively, the distal end of the second RF electrode can be moved in a direction away from the distal end of the first RF electrode. An RF insulative sleeve or coating is placed or positioned along a second RF electrode conductive surface where it is substantially adjacent to the first electrode conductive surface. An RF power source is coupled to the first and second RF electrodes.
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Citations
10 Claims
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1. A method of ablating a tissue surface, comprising:
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providing an RF ablation device including, a delivery catheter, a first RF electrode at least partially positioned in a lumen of the delivery catheter, and a second RF electrode positioned at least partially in the first RF electrode, a distal end of the second RF electrode having a distal end that is substantially a groundpad; and moving a distal end of the first RF electrode in a direction away from the distal end of the second RF electrode to create an ablation line along a selected tissue site between the second RF electrode distal end and the first electrode distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification