Hitinder S. GURM,Yao LIU,Yang LIU,Yihao ZHENG,Albert SHIH
申请号：
US16342573
公开号：
US20190262035A1
申请日:
2017.10.17
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A method of two-phase atherectomy for removal of plaque within an artery forming a stenosis including a first phase of rotational drilling by exerting a rotational force on a cutter to form a channel within the plaque having a diameter substantially equal to a diameter of the cutter—；the cutter being rotated at a first rotational speed sufficient to maintain rotation of the cutter about a stationary rotational axis—；and a second phase of orbital impact by exerting a rotational force on the cutter to result in radial orbital motion of the cutter within the channel resulting in periodic impact of the cutter upon the plaque to form micro-fractures within the plaque and enlarge the diameter of the channel to a diameter substantially greater than the diameter of the cutter—；the cutter being rotated at a second rotational speed to result in the radial orbital motion of the cutter.
