Methods of increasing gas exchange performed by the lung by damaging lung cells, damaging tissue, causing trauma, and/or destroying airway smooth muscle tone with an apparatus inserted into an airway of the lung. The damaging of lung cells, damaging tissue, causing trauma, and destroying airway smooth...http://www.google.es/patents/US6488673?utm_source=gb-gplus-sharePatente US6488673 - Method of increasing gas exchange of a lung
