公开(公告)号：US20200315653A1

公开(公告)日：2020-10-08

申请号：US16842356

申请日：2020-04-07

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： CORYDON CARLSON ,  GARY THOMAS OHRT ,  WADE ROBERT STRELOW

IPC: A61B17/3207

Abstract: An atherectomy system includes a drive mechanism adapted to rotatably actuate an atherectomy burr and a controller that is adapted to regulate operation of the drive mechanism. The controller is adapted to calculate an estimated load torque at the atherectomy burr based upon at least one of an angular velocity of the atherectomy system and an angular acceleration of the atherectomy system. The controller is further adapted to stop or reverse the drive mechanism when the estimated load torque at the atherectomy burr exceeds a torque threshold.