公开(公告)号：US20240032960A1

公开(公告)日：2024-02-01

申请号：US18235570

申请日：2023-08-18

申请人： Cardiovascular Systems, Inc.

发明人： Joseph P. Higgins ,  Kayla J. Eichers ,  Jeffrey R. Stone

IPC分类号： A61B17/3207

CPC分类号： A61B17/320758 ,  A61B17/320725 ,  A61B2017/320032

摘要： Devices, methods and systems are described that enable achieving a working diameter that is greater than a resting diameter and to stimulate fluid circulation during high-speed rotation. The drag coefficient of the drive shaft is increased and, in some embodiments, the mass is increased. Among other advantages, the resulting drive shaft with an eccentric element integrated with and/or attached thereto will achieve orbital motion at a rotational speed that is less the rotational speed required to achieve orbital motion without the increased drag coefficient. The concomitant increase in fluid flow and/or fluid stirring at a comparatively lower rotational speed is a further advantage. These characteristics may allow, therefore, a smaller diameter abrasive element to be used which is advantageous in small and/or highly tortuous vessels.

公开(公告)号：US11730509B2

公开(公告)日：2023-08-22

申请号：US16594883

申请日：2019-10-07

申请人： Cardiovascular Systems, Inc.

发明人： Joseph P. Higgins ,  Kayla J. Eichers ,  Jeffrey R. Stone

IPC分类号： A61B17/3207 ,  A61B17/32

CPC分类号： A61B17/320758 ,  A61B17/320725 ,  A61B2017/320004 ,  A61B2017/320032 ,  A61B2017/320766

摘要： Devices, methods and systems are described that enable achieving a working diameter that is greater than a resting diameter and to stimulate fluid circulation during high-speed rotation. The drag coefficient of the drive shaft is increased and, in some embodiments, the mass is increased. Among other advantages, the resulting drive shaft with an eccentric element integrated with and/or attached thereto will achieve orbital motion at a rotational speed that is less the rotational speed required to achieve orbital motion without the increased drag coefficient. The concomitant increase in fluid flow and/or fluid stirring at a comparatively lower rotational speed is a further advantage. These characteristics may allow, therefore, a smaller diameter abrasive element to be used which is advantageous in small and/or highly tortuous vessels.