| http://www.w3.org/ns/prov#value | - The catheter shaft 12 and occlusion balloons 22, 24, are preferably coated with a lubricous material, such as silicone, acrylimide, or a hydrophilic polyurethane coating, to ease passage of the drug delivery catheter 10 of the invention through the guiding catheter, as is known in the art.
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