Patent ID: 8758295

Claim:
A medical balloon catheter, comprising: an elongate non-interlaced swaged stainless steel multifilar tube, said tube comprising a proximal multifilar tube end, a distal multifilar tube end from which extends a connecting tube element having a smaller outer diameter than the distal multifilar tube end; an outer diameter of about 20-100 mil of the multifilar tube exclusive of the connecting tube element, and an inner diameter of about 20-80 mil, where the inner diameter is less than the outer diameter; a polymer barrier coating thermoformed around the multifilar tube and the connecting tube element, the polymer barrier comprising a polyether block amide material, and wherein a fluid-patent longitudinal multifilar tube lumen portion extends from the proximal multifilar tube end to a distal end of the connecting tube element; a dual-lumen polymer tube comprising a proximal polymer tube end configured to receive the connecting tube element and attached directly to a roughened surface adjacent the distal multifilar tube end, a distal polymer tube end, a first lumen configured as a fluid-patent polymer tube inflation lumen that extends distally from, and is in patent fluid communication with, the multifilar tube lumen, and a second lumen configured as a wire guide lumen extending parallel to the first lumen with a wire guide aperture immediately adjacent the proximal polymer tube end; an inflatable balloon directly attached to the distal polymer tube end such that a lumen of the balloon is in patent fluid communication with the first lumen; where the multifilar tube lumen and the first lumen together comprise a substantially patent path of fluid communication between the multifilar tube end and the balloon lumen; and where the second lumen forms a fluid-patent path of mechanical communication for a wire guide, which extends from a wire guide aperture near the proximal polymer tube end through the balloon lumen to a distal end of the balloon.