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.

公开(公告)号：US20200214735A1

公开(公告)日：2020-07-09

申请号：US16737567

申请日：2020-01-08

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： CORYDON CARLSON ,  DAVID GORDON SPANGLER ,  DANIEL FRANK MASSIMINI ,  LASZLO TRENT FARAGO

IPC: A61B17/3207 ,  A61B17/3203

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 an electric drive motor that is adapted to rotate the drive cable. The controller is adapted to regulate operation of the electric drive motor such that the drive mechanism emulates one or more performance parameters of an air turbine.

公开(公告)号：US20190262022A1

公开(公告)日：2019-08-29

申请号：US16286252

申请日：2019-02-26

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

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

IPC: A61B17/32 ,  A61B90/00 ,  A61B17/3207

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：US20190209204A1

公开(公告)日：2019-07-11

申请号：US16245065

申请日：2019-01-10

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

Inventor： LASZLO TRENT FARAGO ,  DAVID GORDON SPANGLER

IPC: A61B17/3207 ,  A61B1/00

CPC classification number: A61B17/320758 ,  A61B1/00133 ,  A61B17/32002 ,  A61B2017/00022 ,  A61B2017/320766 ,  A61B2090/066

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：US20190175211A1

公开(公告)日：2019-06-13

申请号：US16217009

申请日：2018-12-11

Applicant: BOSTON SCIENTIFIC SCIMED, INC.

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

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

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 member coupled to an end of the drive shaft, a motor coupled to the drive shaft to rotate the rotational tip, and a control unit configured to control a motor state of the motor. The motor may be an electric motor. The control unit may adjust the motor state to decelerate the motor in response to detecting a jam or a stall condition. The jam or stall condition may be detected when a speed of the motor or other motor state reaches or goes beyond a threshold value as prescribed by a reference schedule.