Bipolar tissue debrider and method

A debrider apparatus, comprising:

• a first tubular member including a distal portion, the first tubular member adapted to connect to a first potential of an electrosurgical generator;
• a second tubular member including a distal portion, the second tubular member at least partially disposed within the first tubular member, the second tubular member being adapted to connect to a second potential of the electrosurgical generator, at least one of the first and the second tubular members being selectively movable relative to the other;
• a first set of teeth disposed around about 25% to about 75% of a circumferential periphery of the first tubular member and adjacent the distal portion thereof;
• the periphery of the first tubular member includes teeth and the remaining portion defines a non-cutting zone
• a second set of teeth disposed around at least a portion of a periphery of the second tubular member and adjacent the distal portion thereof;
• and
• at least one switch operably coupled to at least one of the first and second tubular members that both activates movement of one of the tubular members relative to the other of the tubular members and that supplies respective electrical potentials to the first and second tubular members.