Cassandra A. Piippo Svendsen,Daniel J. Lee,Rachel E. DeSmidt,Jesse C. Darley
申请号：
US12817354
公开号：
US08795304B2
申请日:
2010.06.17
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The invention provides a rotational atherectomy system, device and method comprising a bi-directional drive shaft with a flexible ablation element disposed at the distal end of the drive shaft. The flexible ablation element comprises a first retracted position for insertion into vasculature and a second expanded position for ablation, i.e., cutting, sanding and/or grinding. The ablation element comprises more than one flexible finger or blade which allows changing, in certain embodiments, of curvature radius to fit inside a deployment catheter and/or enlarge to the diameter of larger lumens, up to at least 9 mm in diameter. Bi-directional rotation of the expanded ablation element allows cutting in one rotational direction and grinding and/or sanding in the opposite rotational direction.
