Michael Kallok,Cassandra Ann Piippo Svendsen,Paul Joseph Robinson,Charles Anthony Plowe,Albert Selden Benjamin
申请号：
US16733514
公开号：
US20200138474A1
申请日:
2020.01.03
申请国别(地区):
US
年份:
2020
代理人:
摘要：
Rotational atherectomy devices and systems can remove or reduce stenotic lesions in implanted grafts by rotating one or more abrasive elements within the graft. The abrasive elements can be attached to a distal portion of an elongate flexible drive shaft that extends from a handle assembly that includes a driver for rotating the drive shaft. In particular implementations, individual abrasive elements are attached to the drive shaft at differing radial angles in comparison to each other (e.g., configured in a helical array). The centers of mass of the abrasive elements can define a path that fully or partially spirals around the drive shaft.
