公开(公告)号：WO2009006470A1

公开(公告)日：2009-01-08

申请号：PCT/US2008/068904

申请日：2008-07-01

Applicant: CARDIOVASCULAR SYSTEMS, INC. ,  ROBINSON, Paul, J.

Inventor： ROBINSON, Paul, J.

IPC: A61B17/22

CPC classification number: A61B17/320758 ,  A61B17/320725 ,  A61B90/70 ,  A61B2017/320004

Abstract: Apparatus and method for maximizing efficiency of tissue removal from body passageways is provided. A rotational atherectomy device comprises, inter alia, an elongated, flexible and rotatable drive shaft with an enlarged cutting surface disposed thereon, guide wire and catheter. The distal end of catheter may have a cutting surface cleaner, either attached thereto or integrated therein. The cleaner may be outwardly radially flexible and biased against the drive shaft. The cleaner may be opened to accommodate the enlarged cutting surface for cleaning particles trapped therein as a consequence of abrading as it is either advanced distally over the drive shaft and/or the drive shaft is retracted proximally toward the cleaner to accommodate the diameter of the enlarged cutting section. The cleaner comprises an inner surface having an abrasive surface for mechanically scraping and dislodging material trapped in the enlarged cutting head tissue removing surface.

Abstract translation: 提供了使身体通道中组织去除效率最大化的装置和方法。 旋转的粥样斑块切除装置尤其包括细长，柔性和可旋转的驱动轴，其上设置有放大的切割表面，导丝和导管。 导管的远端可以具有切割表面清洁器，或者附接到其上或集成在其中。 清洁器可向外径向弹性并偏压驱动轴。 清洁器可以打开以容纳扩大的切割表面，用于清洁作为研磨的颗粒被捕获的颗粒，因为其在远离驱动轴和/或驱动轴向近侧朝向清洁器收回以适应放大的直径 切割部分。 该清洁器包括内表面，该内表面具有磨料表面，用于机械地刮擦和移走被放置在扩大的切割头组织移除表面中的材料。

公开(公告)号：WO2008154480A1

公开(公告)日：2008-12-18

申请号：PCT/US2008/066294

申请日：2008-06-09

Applicant: CARDIOVASCULAR SYSTEMS, INC. ,  THATCHER, Robert J. ,  ROBINSON, Paul J.

Inventor： THATCHER, Robert J. ,  ROBINSON, Paul J.

IPC: A61B17/22

CPC classification number: A61B17/320758 ,  A61B2017/22038 ,  A61B2017/320004 ,  A61B2017/320766

Abstract: A rotational atherectomy device having, a flexible, elongated, rotatable drive shaft with at least one flexible or partly flexible eccentric enlarged abrading head At least part of the eccentric enlarged cutting head has an abrasive tissue removing surface The abrading head may be at least partially hollow When placed within an artery against stenotic tissue and rotated at sufficiently high speeds the eccentric nature of the enlarged cutting head causes the cutting head and drive shaft to rotate to open the stenotic lesion to a diameter substantially larger than the outer diameter of the enlarged cutting head The eccentric enlarged cutting head has a center of mass spaced radially from the rotational axis of the drive shaft, facilitating opening the stenotic lesion to a diameter substantially larger than the outer diameter of the enlarged cutting head when operated at high speeds

Abstract translation: 具有柔性的，细长的可旋转的驱动轴的旋转粥样斑块切除装置具有至少一个柔性或部分柔性的偏心扩大的研磨头。所述偏心增大的切割头的至少一部分具有磨料组织去除表面。研磨头可以至少部分地是中空的 当放置在动脉内而不是狭窄的组织并以足够高的速度旋转时，放大的切割头的偏心性质导致切割头和驱动轴旋转以将狭窄的病变打开到基本上大于扩大的切割头的外径的直径 偏心的放大切割头具有与驱动轴的旋转轴线径向隔开的质心中心，有助于将狭窄病变打开至基本上大于扩大的切割头的外径的直径，以高速操作