Methods and systems for focused bipolar tissue ablation
First Claim
Patent Images
1. A probe for deploying an electrode array comprising:
- a handle;
a first tubular member extending distally from the handle, the first tubular member having a first array of electrodes slidably disposed inside the tubular member between a retracted configuration and a deployed configuration;
a second tubular member disposed adjacent to a portion of the first tubular member, the second tubular member having a second array of electrodes slidably disposed inside the second tubular member between a retracted configuration and a deployed configuration;
a first conductor coupled the first array of electrodes and extending proximally to a first rack disposed in the handle;
a second conductor coupled the second array of electrodes and extending proximally to a second rack disposed in the handle;
a pinion gear disposed in the handle, the pinion gear interfacing with the first rack and the second rack; and
a knob connected to the first rack.
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Abstract
Large tissue regions are treated using pairs of electrode arrays. The electrode arrays may be concave and disposed in tissue so that their concave portions are opposed to each other. Axial conductors may be provided extending from the arrays and toward each other in order to increase the heating of tissues lying along the axis between the deployed electrode arrays. By properly spacing the electrode arrays apart and selecting the diameters of the arrays, desired volumes of tissue may be treated, typically with a bipolar, radiofrequency current.
76 Citations
20 Claims
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1. A probe for deploying an electrode array comprising:
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a handle; a first tubular member extending distally from the handle, the first tubular member having a first array of electrodes slidably disposed inside the tubular member between a retracted configuration and a deployed configuration; a second tubular member disposed adjacent to a portion of the first tubular member, the second tubular member having a second array of electrodes slidably disposed inside the second tubular member between a retracted configuration and a deployed configuration; a first conductor coupled the first array of electrodes and extending proximally to a first rack disposed in the handle; a second conductor coupled the second array of electrodes and extending proximally to a second rack disposed in the handle; a pinion gear disposed in the handle, the pinion gear interfacing with the first rack and the second rack; and a knob connected to the first rack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for treating a treatment region in tissue comprising:
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advancing a probe into tissue so as to place a first tubular member and a second tubular member disposed on a distal portion of the probe into the treatment region; proximally retracting a knob on a hub to simultaneously deploy a first array of electrodes from first tubular member on one side of the treatment region and a second array of electrodes from the second tubular member on an opposing side of the treatment region; and applying electrical energy between the deployed first array of electrodes and the second array of electrodes to necrose the tissue region there between. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification