Bi-directional flow catheter with retractable trocar/valve structure

摘要: A bi-directional flow catheter for insertion into the body of a patient simultaneous introduction and withdrawal therefrom fluid. The includes primary tube having open distal proximal ends, pair branching tubes, each which branch from different side tube. also has an opening in one thereof to allow An elongate trocar/valve member is disposed movable longitudinally therein between insert position position. One end tapers cutting edge protrudes when formed prevent communication tube, cover passageways respective ones tubes When position, withdrawn allowed other thereby fluid patient.