Multi-lumen catheters are intended for advancement through the accessory channel on endoscope into a body passage into the gastrointestinal system. The catheters have two or more independent lumens extending continuously to ports at the distal tip for injection of a contrast medium simultaneously with...http://www.google.fr/patents/US6770066?utm_source=gb-gplus-shareBrevet US6770066 - Multi-lumen endoscopic catheter
