Energy delivery device and methods of use
AssigneeCovidien LP
InventorsAmr Salahieh, Tom Saul
Life of this patent
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Abstract
The present disclosure is directed to an expandable energy delivery assembly adapted to deliver electrical energy to tissue. The assembly includes an elongate device including an irrigation shaft defining a irrigation lumen fluidly couplable to an irrigation source and a rapid exchange shaft defining a guidewire lumen configured for reception and passage of a guidewire. The assembly also includes an inflatable element that is secured to the elongate device. The inflatable element includes a double helical electrode disposed on the inflatable element that makes between about 0.5 to about 1.5 revolutions around the inflatable element.
Claims20
An energy delivery assembly for delivering ablative energy to tissue, the energy delivery assembly comprising:
- an expandable element;
- an electrode that is configured to deliver electrical energy sufficient to ablate target tissue;
- a rapid exchange shaft that defines a guidewire lumen that is configured to receive a guidewire;
- an elongated inner shaft including a proximal portion and a distal portion, wherein the elongated inner shaft includes:
- an irrigation shaft that defines an irrigation lumen that fluidly couples a fluid reservoir and the expandable element, the irrigation lumen and the guidewire lumen being nonconcentric;
- a first conductive layer that covers and is disposed about the irrigation shaft;
- a first insulation layer that covers the first conductive layer;
- a second conductive layer that covers and is disposed about the first insulation layer;
- and
- a second insulation layer that covers and is disposed about the second conductive layer;
- and
- a third conductive layer disposed about at least a portion of the rapid exchange shaft.
An energy delivery assembly for delivering energy to tissue, the energy delivery assembly comprising:
- an expandable element;
- a guidewire lumen that is configured to receive a guidewire;
- an irrigation shaft that defines an irrigation lumen that fluidly couples a fluid reservoir and the expandable element and that includes a proximal portion and a distal portion, wherein the irrigation lumen and the guidewire lumen are nonconcentric;
- a first conductive material coating the irrigation shaft from the proximal portion to the distal portion;
- a first insulation layer that covers the first conductive material;
- a second conductive material coating the first insulation layer from the proximal portion to the distal portion;
- a second insulation layer that covers the second conductive material;
- a third conductive material disposed about at least a portion of the guidewire lumen;
- and
- an electrode that is electrically coupled to the first conductive material.
A method of controlling renal function, the method comprising:
- expanding an expandable element in a renal vessel such that an electrode that is disposed on the expandable element contacts a wall of the renal vessel;
- delivering electrical energy to the electrode via a first conductive material that extends along an irrigation shaft that defines an irrigation lumen thereby thermally modulating neural activity, wherein the irrigation lumen and a guidewire lumen are nonconcentric and the first conductive material coats a portion of the irrigation shaft;
- and
- transmitting electrical signals along a second conductive material arranged concentrically with the first conductive material, wherein the second conductive material coats a portion of a first insulation layer between the first conductive material and the second conductive material and that is covered by a second insulation layer,
- wherein a third conductive layer is disposed about at least a portion of a guidewire shaft that defines the guidewire lumen.
Dependencies are inferred from the claim text.