Rotational medical device
    2.
    发明授权

    公开(公告)号:US11266436B2

    公开(公告)日:2022-03-08

    申请号:US16245065

    申请日:2019-01-10

    Abstract: Medical systems and methods for making and using medical systems are disclosed. Example medical systems may include an atherectomy system configured to engage and remove plaque from walls in vessels of a vascular system. The atherectomy system may include a drive shaft, a rotational tip coupled to an end of the drive shaft, a motor coupled to the drive shaft to rotate the rotational tip, and a controller configured to control a motor state of the motor. The controller may adjust a range of possible load outputs from the motor and/or a maximum load output from the motor to account for external loads acting on the drive shaft and/or rotational tip rotated by the motor and facilitate passing an occlusion in a vasculature of a patient.

    Atherectomy medical device
    7.
    发明授权

    公开(公告)号:US11096716B2

    公开(公告)日:2021-08-24

    申请号:US16276354

    申请日:2019-02-14

    Abstract: Medical devices and methods for using medical devices are disclosed. A rotational atherectomy device may include an elongate drive coil having a proximal end region and a distal end region, the elongate drive coil having a coil winding extending in a first helical direction, the elongate drive coil having a coil pitch. A tubular member is welded to the distal end region of the elongate drive coil via one or more helical welds that extend helically at least part way around the tubular member and a cutting member welded to the tubular member.

    Atherectomy motor control system with haptic feedback

    公开(公告)号:US11090079B2

    公开(公告)日:2021-08-17

    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.

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