Patent ID: 6102903
Filing Date: 2000-08-15
Classification: A61M

Abstract:
A method for preferentially infusing a fluid through distal and lateral ports of a delivery catheter comprising:positioning the delivery catheter over a flow restrictor at a target location within a body lumen of a patient such that the flow restrictor extends into a distal port of the delivery catheter and forms a restrictive annular passage between an inner peripheral wall of the distal port and an outer surface of the flow restrictor, wherein said positioning step comprises fluoroscopically observing a coil in the distal end of the catheter and position in at least one lateral diffusion port in the catheter based on the observed position of the coil said flow restrictor having a distal tip that is entirely retractable into the coil; andsupplying fluid into a lumen of the delivery catheter wherein the lumen terminates at the distal port and fluid flow through the distal port is substantially inhibited but not stopped by the flow restrictor and fluid preferentially flows radially outward through the at least one lateral infusion port in the delivery catheter.