Brian R. Boland, II,Edward H. Cully,Jeffrey B. Duncan,Paul D. Goodman
申请号：
US14561033
公开号：
US09402649B2
申请日:
2014.12.04
申请国别(地区):
US
年份:
2016
代理人:
摘要：
The present invention provides methods and apparatuses for crossing or bypassing total or near total occlusions of vessels through the use of elongate members and specialized catheters that include a piercing catheter, a reentry catheter, a multi-lumen, reentry catheter, and combinations thereof. A piercing catheter comprises a distal tip used to pierce an occlusion in a crossing procedure and can be configured to microdissect the occlusion or provide support for an elongate member. A reentry catheter comprises a distal side port and ramp to facilitate the reentry or perforation of a vessel wall. A multi-lumen, reentry catheter comprises a tearable lumen divider and a distal side port and ramp.
