Very thin-walled, multi-lumen catheters wherein each of at least three of the catheter lumens shares a common, integrally-formed wall portion with at least one adjacent catheter lumen are disclosed together with methods for using such catheters in medical treatment applications....http://www.google.fr/patents/US6966889?utm_source=gb-gplus-shareBrevet US6966889 - Multi-lumen catheters and methods for using same
