Albert Selden Benjamin,Cassandra Ann Piippo Svendsen,Charles Anthony Plowe,Paul Joseph Robinson
申请号：
US16727518
公开号：
US20200129203A1
申请日:
2019.12.26
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 blood vessels by rotating one or more abrasive elements within the vessel. 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. In some embodiments, a distal stability element with a center of mass aligned with the longitudinal axis is fixedly mounted to the drive shaft.
