Patent ID: 9055966
Filing Date: 2015-06-16
Classification: A61B

Abstract:
1. A high-speed rotational atherectomy device for opening a stenosis in an artery, comprising: a guide wire having a maximum diameter less than a diameter of the artery; a flexible elongated, rotatable drive shaft advanceable over the guide wire and having a rotational axis; and a single piece unitary construction eccentric abrading head secured to the drive shaft and comprising proximal, intermediate and distal portions; wherein the proximal portion comprises a proximal outer surface having diameters that increase distally and a radiused proximal leading edge; wherein the intermediate portion comprises a cylindrical intermediate outer surface that includes at least one tissue removal section; wherein the distal portion comprises a distal outer surface having diameters that decrease distally, the intermediate portion disposed between the proximal and distal portions; wherein the abrading head defines a drive shaft lumen therethrough at least partially traversed by the drive shaft; and wherein the abrading head has a center of mass radially displaced from a surface of the drive shaft.