Abstract: A method for sustained intravascular delivery via electroporation is provided. The method is useful for delivery of therapeutic compositions such as antithrombotic and anticoagulant agents. The invention also provides a catheter apparatus for introducing a composition into at least one cell in a vessel in a subject.

Abstract: The invention provides methods for inducing or increasing the vasodilation of a vessel. The invention further provides methods for inducing or increasing the flow of fluid through a vessel. An electrical impulse is applied to the vessel in order to induce or increase vessel vasodilation or to induce or increase the flow of fluid through the vessel. In a particular embodiment, a novel double-balloon catheter system incorporating electroporation technology has been designed and is used to apply the electrical impulse endoluminally.