Apparatus for uniformly implanting a stent

摘要

An improved system for uniformly implanting a stent in a body lumen comprising an intravascular catheter having an elongated catheter body and at least one inflation lumen contained therein, the catheter body including proximal and distal ends, a balloon near the distal end of the catheter for expanding the stent, an elastic sleeve surrounding and in contact with the balloon for controlling the radial expansion of the balloon and either restraining bands or a pair of control balloons to control the expansion of the balloon so that controllable expansion characteristics of the stent are achieved.