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.