A balloon catheter includes: an outer catheter an inner catheter inserted in the outer catheter, capable of moving relative to the outer catheter in the longitudinal direction thereof, and permitting a flexible medical elongate member to be inserted therethrough an inflatable and contractible balloon constructed from a film member, having one end portion and the other end portion fixed respectively to a distal portion of the outer catheter and a distal portion of the inner catheter, and projecting from a distal end of the outer catheter by an amount which varies according to the amount of movement of the inner catheter relative to the outer catheter and a position restrictor for restricting the position of a distal end of the medical elongate member, which is inserted through the inner catheter, relative to a distal end of the balloon.
