A medical device for performing a therapeutic procedure on a patient. The
medical device includes an elongate probe extending to an applicator end
and a visually transparent tip positioned adjacent the applicator end.
The device also includes an electrode positioned on the tip so that the
electrode may be viewed through the tip. The electrode is communicative
with an energy source for delivering energy to the electrode when
performing the therapeutic procedure on the patient. The probe and tip
are sized and shaped to be slidably received in an endoscope working
channel.