Patent ID: 9211138
Filing Date: 2015-12-15
Classification: A61B

Abstract:
1. A rotational atherectomy device for removing a stenotic tissue from an iliac artery of a patient, the device comprising: a drive shaft that defines a longitudinal axis, the drive shaft being flexible and rotatable, the drive shaft having an elongated proximal portion and an elongated distal portion, at least the elongated proximal portion being configured to extend out of the patient through a first percutaneous access opening to a femoral artery that is ipsilateral to the stenotic tissue in the iliac artery; an abrasive element mounted to the drive shaft between the elongated proximal and distal portions of the drive shaft and configured for rapid rotation together with the drive shaft, the abrasive element having a center of mass that is eccentric from the longitudinal axis of the drive shaft; a proximal drive shaft centering element, the proximal drive shaft centering element being coaxially disposed about the elongated proximal portion of the drive shaft and configured to center at least a portion of the elongated proximal portion of the drive shaft during rotation of the drive shaft; and a distal drive shaft centering element, the distal drive shaft centering element being coaxially disposed about the elongated distal portion of the drive shaft and configured to center at least a portion of the elongated distal portion of the drive shaft during rotation of the drive shaft, wherein the elongated distal portion extends distally beyond a distal-most end of the distal drive shaft centering element.