Patent ID: 6503261
Filing Date: 2003-01-07
Classification: A61B

Abstract:
A bi-directional atherectomy device for removing deposits from a vessel comprising:a driveshaft coupled to a source of bi-directional rotational motion; a burr body coupled to the driveshaft, the burr body including one or more stepped blades extending along at least a portion of a length of the burr body, the stepped blades having a first edge covered with an abrasive that is generally parallel to the outer surface of the burr body and a second edge that is free of abrasive and substantially perpendicular to the outer surface of the burr body, wherein the first edge of the one or more stepped blades removes deposits from a vessel with a first cutting action when the burr is rotated in a first direction and the second edge of the one or more stepped blades removes deposits with a more aggressive cutting action when rotated in a second direction.