CUTTER FOR ATHERECTOMY CATHETER

摘要

An atherectomy catheter device (10) provided with an improved high speed rotatin g cutting head (17) is disclosed in which the cutting head has a generally ovalshaped nose portion which includes a plural ity of radially disposed excising openings (24) extending along and rearward from a point near the center of the nose. The openi ngs are elongated but do not extend beyond the elliptical portion of reduced diameter, and, therefore, do not damage the lining of the vessel involved.