A method of making a catheter having a flexible outer tube and a lubricious inner tube bonded to the flexible outer tube. The catheter is formed of a distal outer tube formed of a first, flexible material, an inner tube having a lubricious inside wall surface formed of a second, lubricious material, and an outer tube wall surface compatible with heat bonding the inner tube outside wall surface to the outer tube wall surfaces. A preferred flexible material is polyether block amide (PEBA) and a preferred lubricious material is polyethylene.
