Catheter devices and methods for their use in enhancing fluid flow through a vascular site occupied by a vascular occlusion are provided. The subject catheter devices include at least a first, second and third lumen, where: (a) the first lumen is used for delivery of an acidic dissolution solution to...http://www.google.ca/patents/US6290689?utm_source=gb-gplus-sharePatent US6290689 - Catheter devices and methods for their use in the treatment of calcified vascular occlusions
