SYSTEMS AND METHODS FOR DILATING AND ACCESSING BODY LUMENS

摘要

A luminal access and dilation system comprises an access sheath, an obturator, and an evertable lubricous sleeve. The evertable lubricous sleeve is initially stowed within an axial passage of the obturator and is everted from the axial passage over the exterior of the obturator and the axis sleeve as the system is advanced into a body lumen. The obturator may be removed from the access sheath to provide a central passage for access to the body lumen or target body cavity.