Abstract: A catheter device for performing atherectomy procedures and the like in which cutting blades at the distal end of the catheter are extended by the application of fluid pressure to the catheter to inflate a balloon. One or more cutting blades are attached to the end of a resilient support that maintains the blade in a retracted position until engaged by the expanding balloon to extend the blade radially outward. Specific embodiments include separate expandable balloons provided on each side of the cutting blade to isolate the operative site and separate conduits for the infusion of a flushing liquid to the operative site.

Abstract: The present invention relates generally to a new apparatus and method for providing a non-uniform light source. More particularly, the invention encompasses an apparatus that uses a modified quartz plate to provide a non-uniform light source. A method for such a non-uniform light source using a modified quartz plate is also disclosed.