Apparatus for detecting and treating tumors using localized impedance measurement
First Claim
1. An apparatus for impedance characterization and ablative treatment of tumors, comprising:
- an elongated delivery device including a lumen, the elongated delivery device being maneuverable in tissue; and
an impedance array comprising a plurality of resilient members being positionable in the elongated delivery device in a compacted state and deployable with curvature into tissue from the elongated delivery device in a deployed state and defining a sample volume in the deployed state, at least two of the plurality of resilient members being a sensor member and including a sensor for determining impedance, where each sensor member is operatively connected to a separate impedance energy source, at least some of said resilient members being electrodes which can be coupled to at least one ablating energy source for ablating tissue when electrical energy is supplied to the electrodes from the ablating source;
wherein said impedance array is effective to determine localized impedance.
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Accused Products
Abstract
An apparatus for treating tumors comprises an elongated delivery device that includes a lumen and is maneuverable in tissue. An impedance sensor array is deployable from the elongated device and configured to be coupled to at least one of an energy source or a switching device. The impedance array includes a plurality of resilient members, at least one of the plurality being positionable in the elongated device in a compacted state and deployable with curvature into tissue from the elongated device in a deployed state. In the deployed state, the plurality of resilient members defines a sample volume. At least one of the resilient members includes an impedance sensor and at least a portion of the array is configured to sample tissue impedance through a plurality of conductive pathways. An energy delivery device is coupled to one of the array, the at least one resilient member or the elongated device.
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Citations
34 Claims
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1. An apparatus for impedance characterization and ablative treatment of tumors, comprising:
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an elongated delivery device including a lumen, the elongated delivery device being maneuverable in tissue; and an impedance array comprising a plurality of resilient members being positionable in the elongated delivery device in a compacted state and deployable with curvature into tissue from the elongated delivery device in a deployed state and defining a sample volume in the deployed state, at least two of the plurality of resilient members being a sensor member and including a sensor for determining impedance, where each sensor member is operatively connected to a separate impedance energy source, at least some of said resilient members being electrodes which can be coupled to at least one ablating energy source for ablating tissue when electrical energy is supplied to the electrodes from the ablating source; wherein said impedance array is effective to determine localized impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification