DAVID GORDON SPANGLER,CORYDON CARLSON,LASZLO TRENT FARAGO,DANIEL FRANK MASSIMINI,MARK A. HILSE
申请号：
US16286252
公开号：
US20190262022A1
申请日:
2019.02.26
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An atherectomy system includes a handle and a drive motor that is adapted to rotate a drive cable extending through the handle and operably coupled to an atherectomy burr. A control system is adapted to regulate operation of the drive motor, including providing the drive motor with a high frequency pulse width modulation (PWM) drive signal in order to operate the drive motor. The control system monitors a motor performance parameter such as motor speed or motor torque, and when the motor performance parameter approaches a limit of a performance range, the control system adds a low frequency PWM signal to the high frequency PWM drive signal, thereby causing the drive motor to produce a tactile signal that signals to the user that the motor performance parameter is approaching the limit of the performance range.
