公开(公告)号：US20220142667A1

公开(公告)日：2022-05-12

申请号：US17585967

申请日：2022-01-27

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： LASZLO TRENT FARAGO ,  DAVID GORDON SPANGLER

IPC: A61B17/3207 ,  A61B1/00 ,  A61B17/32

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.

公开(公告)号：US20210137554A1

公开(公告)日：2021-05-13

申请号：US17152354

申请日：2021-01-19

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： DAVID GORDON SPANGLER ,  CORYDON CARLSON ,  LASZLO TRENT FARAGO ,  DANIEL FRANK MASSIMINI ,  MARK A. HILSE

IPC: A61B17/3207 ,  A61B34/00

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.

公开(公告)号：US20180193056A1

公开(公告)日：2018-07-12

申请号：US15870261

申请日：2018-01-12

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： CALEB SCOTT COLYER ,  DAVID GORDON SPANGLER ,  JASON T. ANDERSON ,  DANIEL FRANK MASSIMINI ,  DAVID B. MORRIS ,  LASZLO TRENT FARAGO ,  JOEL R. BREY

IPC: A61B17/3207

CPC classification number: A61B17/320758 ,  A61B17/3207 ,  A61B2017/320004 ,  A61B2017/320775

Abstract: Medical devices and methods for using medical devices are disclosed. A rotational atherectomy device may include an elongate shaft having a proximal end region, a distal end region and a lumen extending therein. The medical device may also include a cutting member positioned adjacent the distal end region of the elongate shaft. The cutting member may include a plurality of helical grooves defined in an outer surface of the cutting member. At least some of the helical grooves may extend at least one full helical rotation about the cutting member. In some cases, at least some of the helical grooves may include a first helical groove extending in a first direction and a second helical groove extending in a second direction that is different from the first direction.