Patent ID: 9668809
Date: 2017-06-06
CPC Classifications: A61B,A61N

Claim:
1. A system, comprising: a catheter, including: a bronchoscope defining a delivery lumen for receiving the catheter; a coolant source configured to supply a coolant to the inflow lumen of the elongated body of the catheter at a selected temperature and a selected flow rate to circulate the coolant within the expandable balloon when the balloon is in the expanded state; a radiofrequency generator coupled to the electrode to deliver power thereto; and a treatment controller configured to control the power from the radiofrequency generator to the electrode when the coolant is circulated within the expandable balloon to cause cell death in a target region spaced radially outwardly from epithelium at the electrode-tissue interface to thereby form a circumferentially extending lesion spaced radially outwardly from the electrode-tissue interface, while limiting cell death in at least a portion of the epithelium between the target region and the electrode-tissue interface and immediately adjacent the electrode-tissue interface.