Iontophoresis drug delivery system and method for denervation of the renal sympathetic nerve and iontophoretic drug delivery
First Claim
1. A method of treating a human patient, the method comprising:
- placing a drug delivery catheter in a renal artery of the patient, the catheter including a balloon disposed toward the distal end of the catheter and at least one electrode disposed on an outer surface of the balloon, wherein placing the drug delivery catheter includes inflating the balloon into circumferential contact with the wall of the renal artery;
producing an electric potential between the electrode and nerves adjacent a wall of the renal artery; and
administering a drug to the nerves via the electric potential, wherein administering the drug includes disrupting a cover layer covering one or more wells on the surface of the balloon, the one or more wells storing the drug, and the disruption of the cover layer releasing the drug in the vicinity of the one or more electrodes.
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Accused Products
Abstract
An iontophoresis drug delivery system and method for denervation of the renal sympathetic nerve and iontophoresis drug delivery. The system includes an iontophoresis catheter fitted with a drug coated balloon. The iontophoresis catheter includes a balloon near its distal tip or end that contacts the vessel wall circumferentially when inflated. One or more electrodes are associated with a surface of the balloon, and may be disposed on an outer surface of the balloon. The electrodes are operably coupled to an energy source configured to produce a bipolar or monopolar electric field between two balloon electrodes and/or between one balloon electrode and another electrode placed in contact with a part of the patient'"'"'s body. During use, the disclosed drug-delivery catheter produces an electric potential gradient within adjacent tissue, that, in turn, facilitates iontophoresis delivery of a drug. The disclosed catheter can also include a store of one or more drugs to be delivered to the targeted tissue.
998 Citations
9 Claims
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1. A method of treating a human patient, the method comprising:
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placing a drug delivery catheter in a renal artery of the patient, the catheter including a balloon disposed toward the distal end of the catheter and at least one electrode disposed on an outer surface of the balloon, wherein placing the drug delivery catheter includes inflating the balloon into circumferential contact with the wall of the renal artery; producing an electric potential between the electrode and nerves adjacent a wall of the renal artery; and administering a drug to the nerves via the electric potential, wherein administering the drug includes disrupting a cover layer covering one or more wells on the surface of the balloon, the one or more wells storing the drug, and the disruption of the cover layer releasing the drug in the vicinity of the one or more electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification