ATHERECTOMY MOTOR CONTROL SYSTEM WITH HAPTIC FEEDBACK

    公开(公告)号:US20190262034A1

    公开(公告)日:2019-08-29

    申请号:US16287689

    申请日:2019-02-27

    Abstract: An atherectomy system includes a drive mechanism adapted to rotatably actuate an atherectomy burr and a control system that is adapted to regulate operation of the drive mechanism. The drive mechanism may include a drive cable that is coupled with the atherectomy burr and a drive motor that is adapted to rotate the drive cable. The control system includes a drive module adapted to provide an operational signal to operate the drive mechanism, a monitoring module adapted to monitor operation of the drive mechanism and to determine if the drive mechanism is operating within a predetermined range and an excitation module that is operably coupled to the drive mechanism and is adapted to provide haptic feedback to a user of the drive mechanism if the monitoring module determines that the drive mechanism is not operating within a predetermined range.

    ATHERECTOMY MOTOR CONTROL SYSTEM
    3.
    发明申请

    公开(公告)号:US20190262032A1

    公开(公告)日:2019-08-29

    申请号:US16284708

    申请日:2019-02-25

    Abstract: An atherectomy system includes a drive mechanism that is adapted to rotatably actuate an atherectomy burr and a controller that is adapted to regulate operation of the drive mechanism. In some cases, the drive mechanism includes a drive cable that is coupled with the atherectomy burr and a drive motor that is adapted to rotate the drive cable. The controller is adapted to receive an indication of an increase in torque experienced at the atherectomy burr and is further adapted to, in response, regulate operation of the drive mechanism such that the increase in torque results in a noticeable reduction in speed of the drive mechanism such that a user of the atherectomy system notices the reduction in speed and is alerted to the increase in torque.

    HIGH POWER ATHERECTOMY WITH MULTIPLE SAFETY LIMITS

    公开(公告)号:US20210251653A1

    公开(公告)日:2021-08-19

    申请号:US17174996

    申请日:2021-02-12

    Abstract: An atherectomy system includes an electric drive mechanism that is adapted to rotatably actuate an atherectomy burr and a controller that is adapted to regulate operation of the electric drive mechanism. The controller regulates operation of the electric drive mechanism in accordance with a power input limit value that limits how much power can be put into an atherectomy burr and an energy input limit value that limits how much energy can be put into the atherectomy burr. The controller may also regulate operation of the electric drive mechanism in accordance with a dynamic torque limit.

    ATHERECTOMY SYSTEM WITH ELECTROMAGNETIC GUIDEWIRE CLAMP

    公开(公告)号:US20210077143A1

    公开(公告)日:2021-03-18

    申请号:US17016173

    申请日:2020-09-09

    Abstract: An atherectomy system includes an atherectomy burr and a drive mechanism that is adapted to rotatably actuate the atherectomy burr and to accommodate a guidewire extending therethrough. A controller is adapted to regulate operation of the drive mechanism. A guidewire extends through the drive mechanism and an electromagnetic guidewire clamp is adapted to releasably secure the guidewire relative to the drive mechanism.

    ATHERECTOMY MOTOR CONTROL SYSTEM WITH TACTILE FEEDBACK

    公开(公告)号:US20210137554A1

    公开(公告)日:2021-05-13

    申请号:US17152354

    申请日:2021-01-19

    Abstract: 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.

    ATHERECTOMY SYSTEM WITH EXCESS TORQUE PROTECTION

    公开(公告)号:US20200315653A1

    公开(公告)日:2020-10-08

    申请号:US16842356

    申请日:2020-04-07

    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.

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