The invention provides flow directed catheters and methods which are useful in introducing various fluids to a target site within a body lumen. In one exemplary embodiment, a flow directed catheter is provided which comprises a catheter body having a proximal end, a distal end and at least one axial...http://www.google.fr/patents/US5817057?utm_source=gb-gplus-shareBrevet US5817057 - Fluid propulsion steerable catheter and method
