Tubing for endoscopic electrosurgical suction-irrigation instrument

A tubing for connection to an endoscopic instrument having suction, irrigation and electrocautery capabilities, said electrocautery capability requiring connection to an electrical wire, said tubing comprising:

• an extruded flexible plastic tube having a first suction portion having a first interior substantially circular cylindrical fluid tight passageway, a second irrigation portion having a second interior substantially circular cylindrical fluid tight passageway, and a third portion having a third substantially cylindrical interior passageway for an electrical wire, said third portion joining one of said first suction and second irrigation portions and located substantially between said first and second irrigation portions, wherein said third substantially cylindrical interior passageway has first and second flexible lips defining a peripheral opening in said third substantially cylindrical interior passageway, said peripheral opening being narrower than said electrical wire such that said electrical wire is inserted past said lips and held in said third substantially cylindrical interior passageway and is removable from said third substantially cylindrical interior passageway.