Abstract: A perfusion balloon catheter having a plurality of balloon lobes extending from the catheter body. Each balloon lobe defines a flow passage and includes a contact surface which is adapted to contact and support a portion of a blood vessel wall.

Abstract: A perfusion dilatation catheter has a relatively long proximal shaft section comprised of an inner tube coaxially positioned within an outer tube to form two coaxial lumens, and a relatively short distal shaft section comprised of a single tube with two side-by-side lumens. A connection between the proximal and distal shaft sections is formed by inserting and bonding a proximal end of the distal shaft section within a distal end of the outer tube of the proximal shaft section, and by inserting and bonding a distal end of the inner tube of the proximal shaft section within a relatively large lumen of the distal shaft section. An inner lumen of the proximal shaft section, which carries a guide wire, communicates with the relatively large lumen of the distal shaft section.