MONOPOLAR ENERGY DELIVERY DEVICES AND METHODS FOR CONTROLLING CURRENT DENSITY IN TISSUE
First Claim
Patent Images
1. An energy delivery device for use in a body conduit or cavity, the device comprising:
- an elongated body having a proximal portion and a distal portion; and
an energy applicator at the distal portion of the elongated body, wherein the energy applicator has a proximal area, a distal area, and a medial area between the proximal and distal areas, and wherein the energy applicator is configured to deliver a first voltage at the proximal and distal areas and a second voltage greater than the first voltage at the medial area.
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Accused Products
Abstract
Devices, systems and methods for providing energy to treat large areas of tissue. Several embodiments of the devices control resistance or other parameters to provide substantially uniform current density along a length of tissue with reduced edge effects.
247 Citations
30 Claims
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1. An energy delivery device for use in a body conduit or cavity, the device comprising:
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an elongated body having a proximal portion and a distal portion; and an energy applicator at the distal portion of the elongated body, wherein the energy applicator has a proximal area, a distal area, and a medial area between the proximal and distal areas, and wherein the energy applicator is configured to deliver a first voltage at the proximal and distal areas and a second voltage greater than the first voltage at the medial area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An energy delivery device for use in a body conduit or cavity, the device comprising:
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an elongated body having a proximal portion and a distal portion; an expandable member at the distal portion of the elongated body; and an energy conductor at the expandable member, wherein the expandable member and the energy conductor are configured to vary an electrical conductivity along an axial length of the energy conductor so as to achieve a substantially uniform current density along a length of tissue. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for treating an internal airway in a lung of a patient, the method comprising:
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positioning an elongated body of a treatment device in a lung airway of a patient; expanding an energy applicator at a distal portion of the elongated body to contact a wall of the lung airway; and delivering energy to the wall of the airway by varying an electrical conductivity along an axial length of the energy applicator so as to reduce edge effects along a length of target tissue. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification