This invention relates to an improved colonoscope and method of removing or adding non-distal fluid from the colon during colonoscopy using a colonoscope, the colonoscope having at least a distal port and a non-distal port or plurality of non-distal ports to remove fluid from a shared channel within...http://www.google.fr/patents/US7387606?utm_source=gb-gplus-shareBrevet US7387606 - Colonoscope apparatus and method
