An apparatus and method for shielding non-target tissues and organs during thermotherapy, brachytherapy or other treatment of a diseased target tissue. The apparatus includes a catheter shaft having input and output lumens and at least one inflatable balloon. A plurality of input lumens within the catheter...http://www.google.com.tw/patents/US20030114878?utm_source=gb-gplus-share專利 US20030114878 - Catheter based balloon for therapy modification and positioning of tissue
