Denise M. Demarais,Stephen A. Leeflang,Michael A. Evans,Gwendolyn A. Watanabe,John C. Tanner, III,Christian S. Eversull
申请号：
US13278210
公开号：
US20120035594A1
申请日:
2011.10.21
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Material transport catheters and methods for their use rely on rotation of an impeller within a catheter body and a clearing element for preventing buildup of materials at the opening of the catheter body. The impeller preferably comprises an inner tube or shaft having a helical rotor formed over an outer surface thereof. The clearing element may comprise a free end of a structure near the distal end of the catheter body for disrupting clot, wherein the free end of the structure extends into the distal opening of the catheter body to break up materials as the impeller is rotated. Alternatively, the clearing element may comprise a cutting member disposed at the distal opening of the catheter body.
