Christian Scott Eversull;Nicholas J. Mourlas;Asha Shrinivas Nayak;David John Miller;Stephen Arie Leeflang
发明人:
Christian Scott Eversull,Nicholas J. Mourlas,Stephen Arie Leeflang,Asha Shrinivas Nayak,David John Miller
申请号：
US12406897
公开号：
US09839771B2
申请日:
2009.03.18
申请国别(地区):
US
年份:
2017
代理人:
摘要：
Apparatus and methods are provided for accessing body lumens and/or for delivering instruments into body lumens, e.g., vessels within a patient's vasculature. A flexible sheath is provided that is expandable from a contracted condition to an enlarged condition wherein the sheath at least partially defines a lumen therein. The sheath is lubricious and has a relatively thin wall, thereby providing a collapsible/expandable guide for delivering fluids and/or instruments through tortuous anatomy and/or into relatively narrow passages. The sheath is advanced from an entry site to a body lumen in the contracted condition. Once the sheath reaches a target body lumen, the sheath is expanded to the enlarged condition, thereby defining a lumen within the sheath, and fluids and/or instruments are introduced into the body lumen via the sheath lumen. Upon completing the procedure, the sheath is removed from the body lumen.
