Patent ID: 6036670
Filing Date: 2000-03-14
Classification: A61M

Abstract:
A balloon dilatation catheter comprising:an elongated, high-strength proximal cannula having a proximal end, a distal end, and a lumen therethrough;a generally tubular distal end assembly having a guidewire passage lumen, a balloon member, and an inflation lumen in fluid passing communication with said lumen of the proximal cannula, said inflation lumen opening into said balloon, said distal end assembly having a flexibility greater than that of the proximal cannula; anda coil transition assembly which is positioned between and which longitudinally connects said distal end assembly to said proximal cannula and provides flexible bending strain relief thereat, said coil transition assembly including a coil member having an external surface and a transition tube engaging said external surface of the coil member, said transition tube having an axial length at least as long as that of the coil member.