Catheter having a multi-section tubular member and method of making the same

An elongate medical device having a proximal end and a distal end, the elongate medical device comprising:

• an outer tubular member having a proximal end, a distal end, and a lumen extending therethrough;
• an inner tubular member having a proximal end, a distal end and a lumen extending therethrough, the inner tubular member disposed in the lumen of the outer tubular member;
• wherein the inner tubular member includes a proximal segment and a distal segment in a longitudinally abutting relationship, and a polymeric sleeve comprising a polymer having highly oriented molecular chains extending over and coupling the proximal segment with the distal segment,
• wherein an outer surface of the proximal segment is thermally bonded to an inner surface of the polymeric sleeve and an outer surface of the distal segment is thermally bonded to an inner surface of the polymeric sleeve,
• wherein a longitudinally abutting end surface of the proximal segment and a longitudinally abutting surface of the distal segment are not bonded to each other;
• and
• an inflatable member affixed to the distal end of the outer tubular member.