Electrode assembly for rf energy enabled tissue debridement device

A blade assembly extending from a proximal region to a distal region, comprising:

• an outer shaft assembly defining a lumen extending along a central axis, an outer circumference, a proximal end and a distal end opposite the proximal end, wherein the distal end defines a cutting window in the outer shaft assembly and a first electrode surface;
• an inner shaft assembly rotatably disposed within the lumen of the outer shaft assembly about the central axis, the inner shaft assembly defining a distal portion, the distal portion further including a cutting tip;
• an electrode body extending along the outer circumference and electrically isolated from the outer shaft, the electrode body defining a U-shape in cross section with respect to a plane that is perpendicular to the central axis and a second electrode surface spaced apart from the first electrode surface;
• a hub rotatably supporting the outer shaft and the electrode body, wherein upon rotation of the hub about the central axis, the outer shaft and the electrode body rotate about the central axis;
• a rotary electrical connection assembly comprising an outer connector and an inner connector rotatably disposed within the outer connector, the inner connector electrically connected to the electrode body;
• an irrigation channel fluidly coupled with the hub and configured to deliver fluid from the proximal region to the distal region;
• and
• wherein each of the outer connector, the inner connector and the electrode body are formed of a conductive material and extend a respective length in a direction parallel to the central axis, and further wherein, when viewed in cross section along an entirety of the respective length and with respect to the plane that is perpendicular to the central axis, each define a maximum distance from the central axis that includes conductive material such that, for a circle having an origin at the central axis and a circumference at the maximum distance, there exists at least one sector of the circle free of conductive material.