Electrical ablation devices and methods
First Claim
1. A method for delivering energy to tissue having a necrotic threshold, the method comprising:
- inserting an electrode array comprising a plurality of electrodes into the tissue;
inserting a central electrode into the tissue;
positioning a ground pad proximal to the tissue;
applying a first sequence of electrical pulses to the electrode array less than the necrotic threshold to induce thermal heating in the tissue;
applying a second sequence of electrical pulses to the central electrode equal to or greater than the necrotic threshold to induce cell necrosis in the tissue by irreversible electroporation; and
applying a ground potential to the ground pad.
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Accused Products
Abstract
A method for delivering energy to tissue having a necrotic threshold may generally comprise inserting an electrode array comprising a plurality of electrodes into the tissue, inserting a central electrode into the tissue, positioning a ground pad proximal to the tissue, applying a first sequence of electrical pulses to the electrode array less than the necrotic threshold to induce thermal heating in the tissue, applying a second sequence of electrical pulses to the central electrode equal to or greater than the necrotic threshold to induce cell necrosis in the tissue by irreversible electroporation, and applying a ground potential to the ground pad. Electrical ablation devices and systems and methods of using the same are also described herein.
1560 Citations
23 Claims
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1. A method for delivering energy to tissue having a necrotic threshold, the method comprising:
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inserting an electrode array comprising a plurality of electrodes into the tissue; inserting a central electrode into the tissue; positioning a ground pad proximal to the tissue; applying a first sequence of electrical pulses to the electrode array less than the necrotic threshold to induce thermal heating in the tissue; applying a second sequence of electrical pulses to the central electrode equal to or greater than the necrotic threshold to induce cell necrosis in the tissue by irreversible electroporation; and applying a ground potential to the ground pad. - 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. A method for delivering energy to tissue having a necrotic threshold, the method comprising:
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inserting an electrode array comprising a plurality of electrodes into the tissue; inserting a central electrode into the tissue; measuring at least one of temperature and pressure in the tissue adjacent at least one of the electrode array and central electrode; applying a first sequence of electrical pulses to the electrode array less than the necrotic threshold to induce thermal heating in the tissue until at least one of a predetermined temperature and a predetermined pressure is achieved; and applying a second sequence of electrical pulses to the central electrode equal to or greater than the necrotic threshold to induce cell necrosis in the tissue by irreversible electroporation when the at least one of the predetermined temperature and the predetermined pressure is achieved.
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23. A method for delivering energy to tissue having a necrotic threshold, the method comprising:
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inserting an electrode array comprising a plurality of electrodes into the tissue; inserting a central electrode into the tissue; applying a first sequence of electrical pulses to the electrode array less than the necrotic threshold to induce thermal heating and lower the necrotic threshold in the tissue; and applying a second sequence of electrical pulses to the central electrode equal to or greater than the necrotic threshold to induce cell necrosis in the tissue by irreversible electroporation.
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Specification