Device and method for electroporation based treatment of stenosis of a tubular body part
First Claim
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1. A method of treating a stenosis of a tubular body part by non-thermal irreversible electroporation comprising:
- placing into or through a tubular body part, a balloon catheter having electrodes electrically independent from one another and with circumferential spacing between one another;
expanding the balloon to bring one or more of the electrodes near a stenosis to be treated;
administering electrical energy with at least one pair, but less than all, of the electrodes disposed on a cross section of the balloon and in a manner which treats only a portion of a circumference of the tubular body part at a time, such that the administering is performed on only one side of a longitudinal plane in which a central longitudinal axis of the tubular body part is disposed, and which electrical energy is administered as biphasic pulses of 10 microseconds or less, at a frequency of up to 100 MHz, and in an amount which is sufficient to provide an electric field sufficient to induce non-thermal irreversible electroporation of cells of the stenosis.
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Abstract
The present invention relates to medical devices and methods for treating a lesion such as a vascular stenosis using non-thermal irreversible electroporation (NTIRE). Embodiments of the present invention provide a balloon catheter type NTIRE device for treating a target lesion comprising a plurality of electrodes positioned along the balloon that are electrically independent from each other so as to be individually selectable in order to more precisely treat an asymmetrical lesion in which the lesion extends only partially around the vessel.
845 Citations
28 Claims
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1. A method of treating a stenosis of a tubular body part by non-thermal irreversible electroporation comprising:
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placing into or through a tubular body part, a balloon catheter having electrodes electrically independent from one another and with circumferential spacing between one another; expanding the balloon to bring one or more of the electrodes near a stenosis to be treated; administering electrical energy with at least one pair, but less than all, of the electrodes disposed on a cross section of the balloon and in a manner which treats only a portion of a circumference of the tubular body part at a time, such that the administering is performed on only one side of a longitudinal plane in which a central longitudinal axis of the tubular body part is disposed, and which electrical energy is administered as biphasic pulses of 10 microseconds or less, at a frequency of up to 100 MHz, and in an amount which is sufficient to provide an electric field sufficient to induce non-thermal irreversible electroporation of cells of the stenosis. - 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)
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27. A method of treating a stenosis of a tubular body part by non-thermal irreversible electroporation comprising:
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placing into or through a tubular body part, a balloon catheter having electrodes electrically independent from one another and with circumferential spacing between one another; imaging the tubular body part and the balloon catheter using one or more imaging modality, and identifying from the imaging which of the electrodes to activate based on which of the electrodes are disposed near a stenosis to be treated; expanding the balloon to bring one or more of the electrodes near the stenosis; and applying electrical pulses using one or more of the identified electrodes with only one pair of the electrodes at a time and in a manner which treats only a portion of a circumference of the tubular body part at a time, such that the applying is performed on only one side of a longitudinal plane in which a central longitudinal axis of the tubular body part is disposed, the applied pulses being biphasic pulses of 10 microseconds or less, at a frequency of up to 100 MHz, and in an amount which is sufficient to provide an electric field sufficient to induce non-thermal irreversible electroporation of cells of the stenosis. - View Dependent Claims (28)
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Specification