Methods and apparatus for renal neuromodulation
First Claim
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1. A method, comprising:
- extravascularly delivering a plurality of energy delivery elements at a distal segment of a treatment device proximate to renal nerves of a hypertensive human patient; and
delivering electrical energy via the energy delivery elements to attenuate neural traffic along the renal nerves innervating the kidney,wherein delivering electrical energy via the energy delivery elements results in a therapeutically beneficial reduction in blood pressure of the patient.
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Abstract
Methods and apparatus are provided for renal neuromodulation using a pulsed electric field to effectuate electroporation or electrofusion. It is expected that renal neuromodulation (e.g., denervation) may, among other things, reduce expansion of an acute myocardial infarction, reduce or prevent the onset of morphological changes that are affiliated with congestive heart failure, and/or be efficacious in the treatment of end stage renal disease. Embodiments of the present invention are configured for extravascular delivery of pulsed electric fields to achieve such neuromodulation.
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Citations
21 Claims
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1. A method, comprising:
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extravascularly delivering a plurality of energy delivery elements at a distal segment of a treatment device proximate to renal nerves of a hypertensive human patient; and delivering electrical energy via the energy delivery elements to attenuate neural traffic along the renal nerves innervating the kidney, wherein delivering electrical energy via the energy delivery elements results in a therapeutically beneficial reduction in blood pressure of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for treating a hypertensive human patient, the method comprising:
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positioning a plurality of electrodes at a distal region of a catheter at an extravascular location within a human patient and adjacent to neural fibers innervating a kidney of the patient; transforming the distal region of the catheter from a low-profile delivery state to an expanded treatment state, wherein, in the treatment state, the distal region of the catheter is sized and shaped to place the plurality of electrodes in contact with target tissue at or near the neural fibers; and ablating the neural fibers innervating the kidney via radio frequency (RF) energy from the electrodes. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification