transition in flexibility i e junction 210 of the outer tube 200 the transition member 124 is preferably co axially disposed within the annular lumen between the inner member 112 and the outer tube 200 it is recognized however that the transition member may be positioned inside the inner member 112 if the inner member 112 is tubular having an inner lumen or outside of the outer tube 200 the transition member 124 is preferably longitudinally positioned adjacent to at least a portion of the transition in flexibility of the inner member 112 the outer tube 200 or both like above the transition member may be secured to the intermediate portion 114 of the inner member 112 to help secure the transition member 124 to the inner member 112 the proximal portion may be sized so that the transition member 124 can be friction fit over the intermediate portion 114 an adhesive may also be used to secure the transition member 124 to the intermediate portion 114 of the inner tube 112 finally a radius cut 280 may be provided in the transition member 124 to remove any sharp edges that may exists at the proximal end and distal end of transition member 124 it is recognized that spiral cut 126 may result in a sharp edge or point at the proximal end 282 or termination of the spiral cut of the transition member 124 this sharp edge or point may engage the outer tube 200 when the catheter is bent to help reduce any damage that may result a radius cut 280 may be provided to round the edge proximal end 282 this may be accomplished by cutting grinding filing.