An electrosurgical device is provided for removing polyps from the gastrointestinal tract of a patient. In one implementation, an electrosurgical device comprises a snare support member and a snare positioning assembly mounted on an exterior surface of the snare support member. The snare positioning assembly has a longitudinal axis substantially parallel with and offset from the longitudinal axis of the snare support member. The device also includes a base member attached to a distal end of the snare support member and has a longitudinal axis substantially aligned with the longitudinal axis of the snare support member. An aperture is formed through a side wall of the base member. Also included is a polyp snare extending through a first channel of the snare positioning assembly, through the aperture, and through a second channel of the base member.