Disclosed herein are devices for altering gaseous flow within a lung to improve the expiration cycle of an individual, particularly individuals having chronic obstructive pulmonary disease (COPD). More particularly, a medical catheter is disclosed to detect the presence of blood vessels and to produce...http://www.google.co.uk/patents/US20050107783?utm_source=gb-gplus-sharePatent US20050107783 - Devices for applying energy to tissue
