<p num="1"><br/><br/><br/><br/>A cutting balloon catheter assembly (100) including a dual lumen catheter <br/>(130) having a distal end (134), an inflation/deflation <br/>lumen (138) and a second or guidewire lumen (136). The assembly further <br/>includes an inflatable balloon (110) having <br/>an interior cavity (116) and an expandable covering (120) disposed about the <br/>balloon wherein the covering has an array of cutting <br/>edges. In the assembly, the balloon (110) is fixedly connected to the distal <br/>end (134) of the catheter and the interior cavity (116) <br/>of the balloon (110) is in fluid communication with the first lumen (138) of <br/>the catheter (130). A method of removing obstructions <br/>(149) from vessel walls (154) using the present invention is also disclosed <br/>wherein the cutting edges abrade the stenoses, plaque or <br/>lesions along the vessel walls, when the catheter assembly is reciprocally <br/>moved longitudinally or rotationally after inflation of the <br/>balloon.<br/>
