Treatment Device With Electrode Contact Surface Configured for Enhancing Uniformity of Electrical Energy Distribution and Associated Devices and Methods

A catheter, comprising:

• an elongated shaft having a distal end portion;
• and
• a tubular electrode having a proximal end portion operably connected to the shaft via the distal end portion of the shaft, wherein the tubular electrode includes—
• a wall having a contact surface, and
• cut shapes at least partially extending through the wall, wherein the cut shapes include edge portions that extend towards an interior of the contact surface to at least partially define energy distribution regions,
• wherein—
• the electrode is transformable between a low-profile configuration for delivery to a treatment site within a body lumen of a human patient and a deployed configuration for treatment of the patient, and
• when the electrode is at the treatment site and in the deployed configuration, the edge portions of the energy distribution regions are configured to deliver electrical toward an inner surface of the body lumen.

A treatment device, comprising:

• a tubular electrode have a wall with an outer surface and a contact surface located at the outer surface, wherein the tubular electrode is configured to receive electrical energy and to provide at least a portion of the electrical energy at the contact surface for delivering an electrical field toward a treatment site at an inner surface of a body lumen of a human patient;
• at least one outer dielectric material portion at least partially covering the outer surface;
• and
• at least one inner dielectric material portion at least partially covering the outer surface and configured to impede a flow of electrical current between the contact surface and the inner surface of the body lumen.