Ablation device with internally cooled electrodes
First Claim
1. An electrosurgical end-effector for ablating tissue comprising:
- a carrier, andfirst and second electrically conductive ablation electrodes mounted to the carrier and configured to be connected to an energy source, each ablation electrode having a tissue-engaging surface and a longitudinally extending lumen defining an internal fluid passageway, the first and second ablation electrodes being electrically isolated from one another and longitudinally elongated so as to be substantially parallel to each other and spaced apart in a widthwise direction perpendicular to a longitudinal direction.
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Accused Products
Abstract
An electrosurgical end effector for ablating tissue is provided that comprises at least one electrically-conductive ablation member adapted to be connected to a source of RF energy, with the ablation member having a tissue engaging surface and defining an internal fluid passageway. Preferably, the end effector includes two electrically conductive ablation members that are electrically isolated from one another and have their fluid passageways in fluid communication. Alternatively, the end effector may comprise four electrically conductive ablation members arranged as two pairs of ablation members, all of the ablation members having internal fluid passageways that are electrically isolated from each other, with the fluid passageways of each of the four ablation members being in fluid communication with each other.
296 Citations
23 Claims
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1. An electrosurgical end-effector for ablating tissue comprising:
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a carrier, and first and second electrically conductive ablation electrodes mounted to the carrier and configured to be connected to an energy source, each ablation electrode having a tissue-engaging surface and a longitudinally extending lumen defining an internal fluid passageway, the first and second ablation electrodes being electrically isolated from one another and longitudinally elongated so as to be substantially parallel to each other and spaced apart in a widthwise direction perpendicular to a longitudinal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An electrosurgical end effector comprising a tissue engaging surface, at least one electrically conductive electrode located on the tissue engaging surface and configured to be connected to an energy source, and a vacuum port on the tissue engaging surface, the vacuum port having an irregular shape so as to define a plurality of interconnected vacuum areas, so that if vacuum is broken with respect to any of the vacuum areas, the end effector is released.
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23. An electrosurgical end-effector for ablating tissue comprising:
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a carrier having a lengthwise dimension perpendicular to a widthwise dimension, where the lengthwise dimension is larger than the widthwise dimension, and first and second electrically conductive ablation electrodes mounted to the carrier and configured to be connected to an energy source, each ablation electrode having a tissue-engaging surface and a lumen therethrough defining an internal fluid passageway, the first and second ablation electrodes being electrically isolated and spaced apart from one another in the widthwise dimension and the tissue-engaging surfaces of the first and second ablation electrodes extending longitudinally substantially parallel to each other in the lengthwise dimension.
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Specification